Patent application number | Description | Published |
20100117475 | Permanent Magnet Machine with Offset Pole Spacing - An internal permanent magnet machine has multiple rotor sections, each section having multiple rotor laminations. Permanent magnets are placed asymmetrically in lamination openings to attenuate oscillations in torque caused by harmonic components of magnetic flux. | 05-13-2010 |
20110001382 | Permanent Magnet Machine with Offset Pole Spacing - An internal permanent magnet machine has multiple rotor sections, each section having multiple rotor laminations. Permanent magnets are placed asymmetrically in lamination openings to attenuate oscillations in torque caused by harmonic components of magnetic flux. | 01-06-2011 |
20110031843 | Permanent Magnet Machine with Different Pole Arc Angles - An internal permanent magnet machine has multiple rotor sections, each section having multiple rotor laminations. Permanent magnets are placed asymmetrically in lamination openings to attenuate oscillations in torque caused by harmonic components of magnetic flux. Asymmetry is achieved by placing adjacent permanent magnets or magnet sets on the rotor periphery with different rotor magnetic pole arc angles. | 02-10-2011 |
20110074243 | STATOR FOR AN ELECTRIC MACHINE - A stator for an electric machine has a circular stator body surrounding a rotor with an air gap therebetween. The stator has radially extending slots that define radially extending stator teeth. Multiple electric windings are located in the slots to define peripherally spaced magnetic poles. Separate coil groups establish multiple phases for the electric machine. Motor torque ripple is attenuated by forming the stator teeth with different widths for a given coil group. | 03-31-2011 |
20110144843 | PERMANENT MAGNET TEMPERATURE ESTIMATION - A method of controlling a vehicle including a permanent magnet (PM) synchronous motor is provided. The motor is controlled based on direct-axis (d-axis) and quadrature-axis (q-axis) current commands. The method includes estimating permanent magnet flux linkage based on q-axis voltage and electrical angular speed, and estimating permanent magnet temperature based on permanent magnet flux linkage and the temperature coefficient of the permanent magnet. The vehicle is controlled based on the estimated permanent magnet temperature. | 06-16-2011 |
20110169369 | STATOR FOR AN ELECTRIC MACHINE - An electric machine having a stator surrounding a rotor with an air gap therebetween. The stator has slots in its inner margin for accommodating stator coil windings. Stator teeth defined by the slots have irregular shapes to modify a variable flux flow pattern in the air gap to reduce harmonic torque components with minimal effect on an average value of rotor torque. | 07-14-2011 |
20110285239 | Permanent Magnet Machine with Offset Pole Spacing - An internal permanent magnet machine has multiple rotor sections, each section having multiple rotor laminations. Permanent magnets are placed asymmetrically in lamination openings to attenuate oscillations in torque caused by harmonic components of magnetic flux. | 11-24-2011 |
20130342043 | PERMANENT MAGNET MACHINE WITH DIFFERENT POLE ARC ANGLES - An internal permanent magnet machine has multiple rotor sections, each section having multiple rotor laminations. Permanent magnets are placed asymmetrically in lamination openings to attenuate oscillations in torque caused by harmonic components of magnetic flux. Asymmetry is achieved by placing adjacent permanent magnets or magnet sets on the rotor periphery with different rotor magnetic pole arc angles. | 12-26-2013 |
20150099104 | Grain Boundary Diffusion Process For Rare-Earth Magnets - In at least one embodiment, a single sintered magnet is provided having a concentration profile of heavy rare-earth (HRE) elements within a continuously sintered rare-earth (RE) magnet bulk. The concentration profile may include at least one local maximum of HRE element concentration within the bulk such that a coercivity profile of the magnet has at least one local maximum within the bulk. The magnet may be formed by introducing alternating layers of an HRE containing material and a magnetic powder into a mold, pressing the layers into a green compact, and sintering the green compact to form a single, unitary magnet. | 04-09-2015 |
Patent application number | Description | Published |
20090308611 | Wellbore Servicing Compositions Comprising a Density Segregation Inhibiting Composite and Methods of Making and Using Same - A method of servicing a wellbore comprising placing a wellbore servicing fluid comprising a density segregation inhibitor composite into the wellbore, wherein the density segregation inhibitor composite comprises a high density additive and a low density additive; and wherein the high density additive comprises barium sulfate, iron oxide, manganese oxide, or combinations thereof. A method of inhibiting segregation of particles in a wellbore servicing fluid comprising preparing a composite material comprising a high density additive and a low density additive, wherein the low density additive comprises an elastomer which can increase in volume by greater than about 300% based on its original volume when contacted with a fluid. | 12-17-2009 |
20110067864 | Compositions for Improving Thermal Conductivity of Cement Systems - The present invention relates to methods of cementing in subterranean formations and associated compositions. A method of cementing in a subterranean formation comprises placing a cement composition comprising a non-metallic thermally conductive fiber into the subterranean formation, and allowing the composition to set therein, wherein the non-metallic thermally conductive fiber has a thermal conductivity greater than about 500 W/m·K. Another method of cementing in a subterranean formation comprises providing a cement composition comprising a pitch-based carbon fiber, a hydraulic cement material, and water, placing the cement composition in a formation, and allowing the cement composition to set therein, wherein said pitch-based carbon fiber has a density of from about 2.0 grams/cc to about 2.3 grams/cc. A cement composition comprising a cementitious material, water, and a non-metallic thermally conductive fiber having a thermal conductivity greater than about 500 W/m·K, or a pitch-based carbon fiber having a density of from about 2.0 grams/cc to about 2.3 grams/cc. | 03-24-2011 |
20110214859 | Clean Viscosified Treatment Fluids and Associated Methods - Treatment fluids comprising an aqueous base fluid, a compliant cellulosic viscosifying agent, a crosslinking agent, and a protective ligand are provided. The present invention provides methods of using the treatment fluids in subterranean formations. One example of a suitable method includes providing a fracturing fluid comprising an aqueous base fluid, a compliant cellulosic viscosifying agent, a crosslinking agent, and a protective ligand and introducing the fracturing fluid into at least a portion of a subterranean formation at a rate and pressure sufficient to create or enhance at least one or more fractures in the subterranean formation. | 09-08-2011 |
20110214860 | Clean Viscosified Treatment Fluids and Associated Methods - The present invention relates to low environmental impact treatment fluids comprising a compliant crosslinking agent, and methods of use employing such treatment fluids to treat subterranean formations. The methods include providing a low environmental impact treatment fluid including an aqueous base fluid, a viscosifying agent, and a compliant crosslinking agent that comprises an iron ion and a non-iron crosslinking metal ion; and placing the treatment fluid in a subterranean formation. In some embodiments, the viscosifying agent may be a compliant viscosifying agent. | 09-08-2011 |
20110214868 | Clean Viscosified Treatment Fluids and Associated Methods - Treatment fluids comprising an aqueous base fluid, a viscosifying agent, and a compliant dual-functional additive are provided. The present invention provides methods of using the treatment fluids in subterranean formations. One example of a suitable method includes providing a fracturing fluid comprising an aqueous base fluid, a viscosifying agent, and a compliant dual-functional additive that acts as a fluid loss control agent and a breaker and introducing the fracturing fluid into at least a portion of a subterranean formation at a rate and pressure sufficient to create or enhance at least one or more fractures in the subterranean formation. | 09-08-2011 |
20120205577 | Compositions for Improving Thermal Conductivity of Cement Systems - A method of cementing in a subterranean formation comprises placing a cement composition comprising a non-metallic thermally conductive fiber into the subterranean formation, and allowing the composition to set therein, wherein the non-metallic thermally conductive fiber has a thermal conductivity greater than about 500 W/m.K. Another method of cementing in a subterranean formation comprises providing a cement composition comprising a pitch-based carbon fiber, a hydraulic cement material, and water, placing the cement composition in a formation, and allowing the cement composition to set therein, wherein said pitch-based carbon fiber has a density of from about 2.0 grams/cc to about 2.3 grams/cc. A cement composition comprising a cementitious material, water, and a non-metallic thermally conductive fiber having a thermal conductivity greater than about 500 W/m.K, or a pitch-based carbon fiber having a density of from about 2.0 grams/cc to about 2.3 grams/cc. | 08-16-2012 |
20130025860 | Composite Particulates and Methods Thereof for High Permeability Formations - Composite particulates for use in high permeability subterranean formations may contain, at least, a gel particulate having a solid particulate incorporated. Some methods of using the diverting agent may include introducing a treatment fluid comprising a base fluid and a diverting agent into at least a portion of a subterranean formation and allowing the diverting agent to bridge fractures, provide fluid loss control, seal the rock surfaces for fluid diversion, or plug an area along the annulus of a wellbore. | 01-31-2013 |
Patent application number | Description | Published |
20090210743 | METHOD AND DEVICE FOR REALIZING IP MULTIMEDIA SUBSYSTEM DISASTER TOLERANCE - A method for realizing an Internet protocol (IP) multimedia subsystem (IMS) disaster tolerance includes the steps as follows. An S-CSCF receives a user registration, and backs up necessary data which is required when a user service processing is restored on a storage entity in a network. An I-CSCF of user's home domain receives a service request of the user, and if it is found that the S-CSCF currently providing a service for the user fails, assigns a new S-CSCF to the user, and forwards the service request to the newly assigned S-CSCF. The newly assigned S-CSCF interrogates and acquires subscription data of the user and the necessary data backed up by the original S-CSCF from the storage entity, and then restores the user service processing according to the subscription data and the backup data. A device for realizing an IMS disaster tolerance is also provided. | 08-20-2009 |
20100039930 | Method, Apparatus, and System for Disaster Recovery of IMS - A method, apparatus, and system for disaster recovery of an IP Multimedia Subsystem (IMS) are provided. The method includes: triggering a redundant Call Session Control Function (CSCF); obtaining, by the redundant CSCF, user backup data of registered IMS Private User Identities (IMPIs) that are associated with IMPUs and user service configuration data of IMS Public User Identities (IMPUs) in an IMS subscription from a network storage entity of a user; and recovering, by the redundant CSCF, a corresponding service according to the obtained user backup data of the registered IMPIs and user service configuration data of the IMPUs in the IMS subscription. With the present invention, the one-IMPU multi-IMPI, one-IMPI multi-IMPU, or multi-IMPI multi-IMPU service can be recovered, and this enables the user to have better service continuity experiences. | 02-18-2010 |
20120014286 | Configuration method and configuration device for the backhaul link in a long term evolution system - The present invention provides a configuration method for a backhaul link in a Long Term Evolution (LTE) system, and the method includes: when a network side configures a relay subframe, configuring the relay subframe to be a Multicast Broadcast Single Frequency Network (MBSFN) subframe on a downlink access link, configuring a relay subframe to be a unicast subframe or non-MBSFN subframe on a downlink backhaul link. And meanwhile, the present invention provides a configuration device for the backhaul link in the LTE system, which includes: a configuration unit for configuring a relay subframe to be a unicast subframe or non-MBSFN subframe on a downlink backhaul link when a relay subframe is configured by the network side and configured to be an MBSFN subframe on a downlink access link. The present invention improves the communication efficiency of the backhaul link and the access flexibility of UE in the cell covered by the base station. | 01-19-2012 |
20120044802 | METHOD AND DEVICE FOR REALIZING IP MULTIMEDIA SUBSYSTEM DISASTER TOLERANCE - A method for realizing an Internet protocol (IP) multimedia subsystem (IMS) disaster tolerance includes the steps as follows. An S-CSCF receives a user registration, and backs up necessary data which is required when a user service processing is restored on a storage entity in a network. An I-CSCF of user's home domain receives a service request of the user, and if it is found that the S-CSCF currently providing a service for the user fails, assigns a new S-CSCF to the user, and forwards the service request to the newly assigned S-CSCF. The newly assigned S-CSCF interrogates and acquires subscription data of the user and the necessary data backed up by the original S-CSCF from the storage entity, and then restores the user service processing according to the subscription data and the backup data. A device for realizing an IMS disaster tolerance is also provided. | 02-23-2012 |
20120057521 | METHOD FOR IMPLEMENTING RELAY STATION DOWNLINK COOPERATIVE RETRANSMISSION AND A RELAY STATION - A method for implementing relay station downlink retransmission and a relay station are disclosed by the present invention. According to the situation of the least available radio resource number for retransmission data on a retransmission sub-frame, the relay station of the present invention performs corresponding physical layer processing in advance for the data to be retransmitted until the OFDM signal is generated, and retransmits the OFDM signal on the retransmission sub-frame. By the method of the present invention, the problem is resolved efficiently that the relay station cooperative communication cannot be performed normally due to the change of the radio resource number during downlink data retransmission, so that the normal implementation of the relay station downlink cooperative communication is ensured; furthermore, the method of the present invention does not induce any extra overhead and time delay, needs no signaling control, can be easily implemented, reduces the system complexity, ensures the flexibility of sub-frame configuration, thereby improving service quality and resource utilization rate. | 03-08-2012 |
20120063384 | Method and System for Transmitting Relay Link Control Channel - A method and system for transmitting a relay link control channel are disclosed for realizing the mapping and transmission of a control channel on a link from an eNode-B to a relay node. In the present invention, in a frequency division multiplex mode, control information is carried by one or more resource blocks in the frequency direction and the universal set of OFDM symbols available to a relay link in a subframe in the time direction; in a time division and frequency division multiplex mode, control information is carried by one or more resource blocks in the frequency direction and a subset of OFDM symbols available to a relay link in a subframe in the time direction; in a time division multiplex mode, control information is carried by all the resource blocks in the frequency direction and a subset of OFDM symbols available to a relay link in a subframe in the time direction; and the mapping of the control channel includes mapping in the time direction and/or the frequency direction. The present invention has backward compatibility and can obtain frequency diversity again. The time division multiplex mode can save power consumption, and the frequency division multiplex mode and the time division and frequency division multiplex mode have the advantages of flexible service scheduling. | 03-15-2012 |
20120113802 | Method, Apparatus, and System for Disaster Recovery of IMS - A method, apparatus, and system for disaster recovery of an IP Multimedia Subsystem (IMS) are provided. The method includes: triggering a redundant Call Session Control Function (CSCF); obtaining, by the redundant CSCF, user backup data of registered IMS Private User Identities (IMPIs) that are associated with IMPUs and user service configuration data of IMS Public User Identities (IMPUs) in an IMS subscription from a network storage entity of a user; and recovering, by the redundant CSCF, a corresponding service according to the obtained user backup data of the registered IMPIs and user service configuration data of the IMPUs in the IMS subscription. With the present invention, the one-IMPU multi-IMPI, one-IMPI multi-IMPU, or multi-IMPI multi-IMPU service can be recovered, and this enables the user to have better service continuity experiences. | 05-10-2012 |
20120263097 | Mapping and resource allocation method for relay link-physical downlink shared channel - The present disclosure provides a mapping and resource allocation method for R-PDSCH, including: when resources allocated for an R-PDCCH overlap with resources allocated for the R-PDSCH, data of the R-PDSCH is not mapped or sent on over-lapped resources, or the data of the R-PDSCH to be sent on the over-lapped resources is punctured; the data of the R-PDSCH is mapped and sent on all or partial resources which are not occupied by the R-PDCCH; a receiving end receives data according to the mapping method for the R-PDSCH; wherein a resource allocation mode corresponding to a shared channel in an LTE system is reused or a grouping-tree resource allocation mode is used to allocate resources for the R-PDSCH. The present disclosure is well applicable to a link between an eNode-B and a relay node, and the resource allocation mode is flexible, the signalling overhead is lowered, therefore, not only the backward compatibility is ensured, but also the problem of mapping and resource allocation of the R-PDSCH is solved. | 10-18-2012 |
20130039261 | Method and System for Allocating Resources of Relay Link-Physical Downlink Control Channel - The disclosure provides a method and system for allocating resources of a Relay link-Physical Downlink Control Channel (R-PDCCH). The method includes that: a network side configures a resource allocation way of the R-PDCCH ( | 02-14-2013 |
20130044673 | METHOD FOR INDICATING AND DETERMING RELAY LINK BOUNDARY AND BASE SATION THEREOF - The present invention discloses a method for indicating and determining relay link boundary and a base station thereof, wherein, the method for indicating relay link boundary includes: the base station indicates the relay link boundary where the relay node is located to the relay node; the relay node determines the relay link boundary according to the indication of the base station. Through the present invention, the utilization rate of the relay link resource can be improved. | 02-21-2013 |
20130044721 | METHOD, SYSTEM AND RELAY NODE FOR PROCESSING UPLINK CONTROL INFORMATION ON BACKHAUL LINK - The disclosure discloses a method, system and RN for processing UCI on a backhaul link. The method comprises that: the RN determines Q′ which is the number of the coded modulation symbols of the backhaul UCI according to the number of SC-FDMA symbols occupied by a GP, wherein the GP comprises RN state switch time deltaT and/or the time interval deltat which is reserved for avoiding the interference caused by RN uplink transmission, and deltaT is the switch time required by the RN to switch from an uplink reception state to an uplink transmission state and/or from the uplink transmission state to the uplink reception state; and the RN codes the backhaul UCI into a Q=Q′×Q | 02-21-2013 |
20130201899 | Transmission Method and System for Relay Physical Downlink Control Channel - The present invention discloses a transmission method and system for a Relay Physical Downlink Control Channel (R-PDCCH). The method comprises the steps of: an eNB bearing downlink grant information of a relay node onto an available Orthogonal Frequency Division Multiplex (OFDM) symbol of a first slot of a pre-allocated Physical Resource Block (PRB) pair used for bearing the R-PDCCH, wherein available OFDM symbols in the PRB pair, other than the OFDM symbol used for the downlink grant information, are used for bearing a Physical Downlink Shared Channel (PDSCH) of each relay node (S | 08-08-2013 |
20130242931 | Method and Device for Feeding Back Acknowledgment Information during Switching of Backhaul link Subframe Configuration - The disclosure provides a method and a device for feeding back Acknowledgment (ACK) information during switching of backhaul link subframe configuration, and the method includes during the switching of the backhaul link subframe configuration, if Uplink (UL) ACK/Negative ACK (NACK) information, which corresponds to a last transmission before the switching of one or more Downlink (DL) Hybrid Automatic Repeat Request (HARQ) transmissions, is not fed back on a UL subframe which is before the switching, feeding back the ACK/NACK information on an available UL subframe which is after the switching since Nms after the last transmission, wherein N is an integer. The disclosure achieves the effect of correctly feeding back the ACK information during switching of the backhaul link subframe configuration. | 09-19-2013 |
20130286901 | Downlink Feedback Method for Time Division Dual System and Relay Link Thereof - The present invention discloses a Time Division Dual (TDD) system and a downlink feedback method for a relay link thereof. A relay station and a network side of the TDD system transmit uplink data and downlink feedback through relay subframes, wherein: one or more uplink subframes are selected from uplink subframes of a wireless frame as uplink relay subframes used for uplink data transmission, a downlink subframe is determined for each uplink relay subframe from downlink subframes of the wireless frame as a downlink relay subframe used for downlink feedback or new data indication, wherein the uplink relay subframes and the downlink relay subframes have a fixed timing sequence relationship; the relay station transmits uplink data to the network side through the uplink relay subframes, and receives the downlink feedback or new data indication from the network side through the downlink relay subframes corresponding to the uplink relay subframes. | 10-31-2013 |
20140215545 | ONLINE VIDEO PLAYING METHOD AND VIDEO PLAYING SERVER - The present invention discloses a method for playing online video and a video playing server thereof This method includes: splitting a video play file into multiple sequentially connected video segments; receiving a video downloading request from a user, obtaining a video segment corresponding to positioning information carried in the video downloading request, and returning content of the video segment corresponding to the positioning information to a client; and confirming that returning content of the current video segment is finished, and releasing bandwidth resources occupied by the user. By applying the present invention, the bandwidth utilization rate can be improved and the bandwidth resource pressure of the video playing server can be decreased. | 07-31-2014 |
20140369292 | Wireless Communication Method and Communication Apparatus - The embodiments of the present invention disclose a wireless communication method and apparatus. The method includes: a first communication device receiving first grant from a network node, the first grant at least comprising first resource allocation information for allocating resources; the first communication device receiving second grant from a second communication device, the second grant at least comprising a modulation and coding scheme of service data; the first grant and the second grant being used for scheduling service data transmission between the first communication device and the second communication device; and the first communication device receiving, according to the scheduling, service data transmitted by the second communication device; and/or the first communication device transmitting, according to the scheduling, service data to the second communication device. | 12-18-2014 |
20150016368 | Data Transmission Control Method and System for User Equipment - The present document provides a method and system for controlling data transmission of a User Equipment (UE). The method includes: a base station transmitting control information for instructing a first UE to transmit data to a second UE. The present document solves the interference problem in device to device communication and communication in the original network, realizes the direct UE to UE communication and improves spectrum efficiency. | 01-15-2015 |
20150055579 | DEVICE-TO-DEVICE COMMUNICATION METHOD AND APPARATUS - Provided are methods and apparatuses for device-to-device (D2D) communication. The method includes: configuring dedicated subframe(s) according to cellular uplink hybrid automatic repeat request (HARQ) process(es), the dedicated subframe(s) being used for D2D communication (S | 02-26-2015 |
20150110037 | Methods, devices and system for transmitting sounding reference signal and User Equipment - Methods, devices and a system for transmitting SRS and a UE are provided. A network node transmits an SRS configuration information set to a UE, wherein the SRS configuration information set includes first configuration information indicating the configuration of a first SRS and second configuration information indicating the configuration of a second SRS, wherein the first SRS is transmitted on a cellular uplink and used for performing uplink channel measurement during cellular communication; and the second SRS is transmitted on a D2D link and used for performing channel measurement of the D2D link during D2D communication. The solution addresses the problem of the configuration and the transmission of a reference signal existing in the conventional art when D2D communication is introduced into a cellular system, realizes the compatibility of D2D communication with cellular communication and avoids the noticeable increase in UE design and realization complexity. | 04-23-2015 |
20150245192 | METHOD, APPARATUS AND SYSTEM FOR D2D COMMUNICATION - Method, apparatus and system for D2D communication are provided. The method includes: a first user equipment receives configuration message(s) from a network, wherein the configuration information about D2D discovery signal(s) is carried in the configuration message(s); the first user equipment detects D2D discovery signal(s) from a second user equipment according to the configuration information carried in the configuration message(s); the first user equipment transmits a request message to the network according to the result of the detection to acquire the identity of the second user equipment transmitting the detected D2D discovery signal; and the first user equipment receives a response message returned from the network, wherein the identity of the second user equipment or rejection information indicating the rejection to the discovery of the second user equipment by the first user equipment is carried in the response message. The present disclosure addresses the problem of the peer discovery of D2D incorporated in a cellular communication system. | 08-27-2015 |
20150249981 | Method, apparatus and system for processing channel state information - A method, apparatus and system for processing channel state information are provided. The second channel state information of a second link is sent to a network node via a first link, wherein the first is a cellular communication link from a first device to the network node, and the second link is a D2D communication link between the first device and a second device capable of communicating with the first device. The transmission of channel state information is implemented during D2D communication in a cellular communication system, a criterion for scheduling D2D communication is consequentially provided, and the resource utilization rate of D2D communication is guaranteed. Moreover, the compatibility of D2D communication with cellular communication is achieved without obviously increasing the complexity of implementation and design of UE. | 09-03-2015 |
20150341772 | Method and Apparatus for Processing D2D Device Identity - The disclosure provides a method and an apparatus for processing Device-to-Device (D2D) device identity. The method includes that: a D2D device transmits a temporary D2D identity request; the D2D device receives temporary D2D identity authorization information corresponding to the temporary D2D identity request, and acquires a temporary D2D identity; and the D2D device broadcasts the received temporary D2D identity, wherein the temporary D2D identity is configured to discover the D2D device by a discovering D2D device in a D2D discovery process. By the disclosure, the security of communication among the D2D devices is improved. | 11-26-2015 |
Patent application number | Description | Published |
20120024526 | Self-Diverting High-Rate Water Packs - A method for diverting fluids across a perforation tunnel in high-rate water pack operations may include providing a wellbore extending into a subterranean formation, wherein a perforation tunnel provides a fluid connection between the wellbore and the subterranean formation; providing a diverting particulate that comprises a degradable plasticized polymer coating on a particulate; placing the diverting particulate into the perforation tunnel, wherein the step of placing the diverting particulate forms a particulate pack within the subterranean formation and the perforation tunnel; allowing the degradable plasticized polymer coating to deform and fill the interstitial spaces within the particulate pack in the perforation tunnel such that the fluid conductivity between the wellbore and the subterranean formation is substantially blocked; and allowing the plasticized polymer coating to degrade over time thereby substantially restoring the fluid conductivity between the wellbore and the subterranean formation. | 02-02-2012 |
20130025859 | Polymer Compositions for Use in Downhole Tools and Components Thereof - Methods including providing a downhole tool or a component thereof comprising a plasticized polymer composition that comprises a polymer and a water-soluble plasticizer, wherein the plasticized polymer composition has a first deflection test value; exposing the downhole tool or the component thereof to an aqueous-based medium; allowing the water-soluble plasticizer to leach out of the downhole tool or the component thereof, wherein the plasticized polymer composition has a second deflection test value after exposure to the aqueous-based medium, and wherein the second deflection test value is less than about 10% of the first deflection test value; and placing the downhole tool or the component thereof in a subterranean formation. | 01-31-2013 |
20130081801 | Methods for Improving Coatings on Downhole Tools - The present invention relates to the use of degradable coatings suitable for use on downhole tools. In particular, the present invention relates to pliable coatings for use on downhole tools that have been designed to be able to resist flaking or breaking off of the tool in response to a physical shock. Some embodiments of the present invention provide methods of reacting lactic acid, glycolic acid, or a combination thereof in a polymerization reaction to form a degradable polymer; combining the degradable polymer and a plasticizer to form a coating composition; applying the coating composition to a downhole tool; placing the coated downhole tool into a portion of a subterranean formation; and, hydrolyzing the degradable polymer of the coating composition to release an acid and degrade the coating. | 04-04-2013 |
20130081813 | Methods of Fluid Loss Control, Diversion, and Sealing Using Deformable Particulates - Method including the steps of providing a treatment fluid that comprises a base fluid and polymeric particulates wherein the polymeric particulates comprise a degradable polymer and a plasticizer and exhibit a T | 04-04-2013 |
20130081821 | Reinforcing Amorphous PLA with Solid Particles for Downhole Applications - The present invention relates to the use of composite material in downhole applications, and more particularly, relates to methods of making composite material comprising reinforced amorphous polylactic acid and methods of use related thereto. Some methods comprise providing an amorphous polylactic acid and a solid reinforcing material; forming a composite material by melting the amorphous polylactic acid and mixing it with the solid reinforcing material; and, using the composite material in a downhole application. | 04-04-2013 |
20130233546 | Degradable Fluid Sealing Compositions Having an Adjustable Degradation Rate and Methods for Use Thereof - When performing subterranean treatment operations, it can be desirable to temporarily divert or block fluid flow by forming a degradable fluid seal. Methods for forming a degradable fluid seal can comprise: providing a sealing composition comprising: a degradable polymer, and a water-soluble material comprising a first portion and a second portion of rigid particulates, each portion having a sealing time and a particulate size distribution associated therewith, the particulate size distributions of the first portion and the second portion differing from one another; determining an amount of the first portion relative to the second portion needed to produce a degradable fluid seal having a desired sealing time that is different than that of the sealing time of either the first portion or the second portion; introducing the sealing composition into a subterranean formation; and allowing the sealing composition to form a degradable fluid seal in the subterranean formation. | 09-12-2013 |
20130292123 | Degradable Balls for Use in Subterranean Applications - Degradable balls for downhole use may include an incompliant degradable polymer and a compliant filler material, the incompliant degradable polymer having an elastic modulus of about 2 GPa or greater, and the compliant filler material having an elastic modulus of less than about 2 GPa. Such degradable balls may be useful in sealing segments of a wellbore and actuating wellbore tools. | 11-07-2013 |
20140073538 | Fluid Loss Control Composition and Method of Using the Same - Fluid loss materials including carboxymethylcellulose and zirconium-based crosslinkers may be employed as fluid loss materials in methods of treating subterranean formations. One method includes providing a treatment fluid including carboxymethylcellulose (CMC) and a crosslinker including zirconium, wherein the carboxymethylcellulose has a degree of substitution in a range of from about 0.5 to about 2.5, wherein the crosslinker including zirconium includes one selected from the group consisting of ammonium zirconium fluoride, zirconium 2-ethylhexanoate, zirconium acetate, zirconium neodecanoate, zirconium acetylacetonate, tetrakis(triethanolamine) zirconate, zirconium carbonate, ammonium zirconium carbonate, zirconyl ammonium carbonate, zirconium complex of hydroxyethyl glycine, zirconium malonate, zirconium propionate, zirconium lactate, zirconium acetate lactate, and zirconium tartrate, and placing the treatment fluid in a subterranean formation, wherein the treatment fluid controls fluid loss in a permeable portion of the subterranean formation penetrated by a wellbore. | 03-13-2014 |
20140213490 | Wellbore Servicing Compositions and Methods of Making and Using Same - A method of servicing a wellbore in a subterranean formation comprising placing a wellbore servicing fluid comprising a coupling agent, a hardenable resin and a hardening agent into the wellbore wherein the coupling agent comprises a multihydroxy phenyl, a dihydroxy phenyl, a trihydroxy phenyl, ascorbic acid, a hydroxymethylnaphthol, an oxidation product thereof, a derivative thereof, or combinations thereof. A wellbore servicing fluid comprising a coupling agent, a hardenable resin, a hardening agent and a proppant wherein the coupling agent comprises a multihydroxy phenyl, a dihydroxy phenyl, a trihydroxy phenyl, ascorbic acid, a hydroxymethylphenol, a hydroxymethylnaphthol, an oxidation product thereof, a derivative thereof, or combinations thereof. | 07-31-2014 |
20140357535 | Wellbore Servicing Compositions and Methods of Making and Using Same - A method of servicing a wellbore in a subterranean formation comprising preparing a wellbore servicing fluid comprising a resin material, a silane coupling agent, and an aqueous base fluid, placing the wellbore servicing fluid in the wellbore and/or subterranean formation, and allowing the wellbore servicing fluid to harden therein. | 12-04-2014 |
20150122494 | CONSOLIDATION COMPOSITIONS FOR USE IN SUBTERRANEAN FORMATION OPERATIONS - Embodiments disclosed herein include methods comprising providing a consolidation composition comprising the reaction product of a liquid curable resin and a liquid curing agent, wherein the liquid curable resin is an epoxy-functionalized alkoxysilane and wherein the liquid curing agent is selected from the group consisting of: a polyamine; a hydrophobically modified polyamine; a polyimine; a hydrophobically modified polyimine; a polyalcohol; hydrophobically modified polyacrylamide; a hydrophobically modified polyacrylate; and any combination thereof; coating proppant particulates with the consolidation composition, thereby creating coated proppant particulates; introducing the coated proppant particulates into a subterranean formation and placing the coated proppant particulates into a fracture therein; and curing the consolidation composition so as to consolidate the coated proppant particulates in the fracture and form a proppant pack therein. | 05-07-2015 |
20150203742 | SALT-TOLERANT FRICTION-REDUCING COMPOSITION FOR TREATMENT OF A SUBTERRANEAN FORMATION - Various embodiments disclosed related to a composition for treating a subterranean formation, and methods and systems including the same. In various embodiments, the present invention provides a method of treating a subterranean formation that can include obtaining or providing an aqueous composition including a friction-reducing water-soluble polymer including about Z | 07-23-2015 |
20150267520 | Hydrophobically Modified Amine-Containing Polymers for Mitigating Scale Buildup - Hydrophobically modified amine-containing polymers (“HMAP”) may be useful in mitigating scale buildup in a subterranean formation. For example, a method may include preparing a treatment fluid that comprises a base fluid and a plurality of HMAP-coated particulates that comprise particulates at least partially coated with an HMAP, wherein the HMAP comprises a plurality of hydrophobic modifications on an amine-containing polymer; introducing the treatment fluid into a wellbore penetrating a subterranean formation; forming a particulate pack that comprises at least some of the HMAP-coated particulates; and inhibiting scale buildup on the HMAP-coated particulates. | 09-24-2015 |
Patent application number | Description | Published |
20140090847 | Dehydrated Gel Compositions and Methods of Using the Same - Methods and compositions using gel compositions in treatment fluids employed in subterranean operations. A method includes providing a degradable gel precursor as a solid or dispersion in which substantially all the water has been removed, the degradable gel precursor being formed by a combination of a monomer and a degradable crosslinking agent of formula R | 04-03-2014 |
20140131041 | Methods of Forming and Placing Proppant Pillars Into a Subterranean Formation - Methods of treating a subterranean formation comprising providing a treatment fluid comprising a base fluid, proppant particulates, a consolidating agent, a thermoplastic material, and a degradable polyester material; placing the treatment fluid into the subterranean formation; coating the proppant particulates and the consolidating agent with the thermoplastic material and the degradable polyester material together so as to form proppant pillars; and degrading the degradable polyester material. | 05-15-2014 |
20140144630 | Methods of Treating a Subterranean Formation with Thermally Activated Suspending Agents - Methods of treating a subterranean formation having at least one fracture including providing a thermal thinning resistant treatment fluid comprising an aqueous base fluid, proppant particulates, and a thermally activated suspending agent; wherein the thermally activated suspending agent is hydratable above a threshold temperature; introducing the thermal thinning resistant treatment fluid into the subterranean formation; exceeding the threshold temperature so as to hydrate the thermally activated suspending agent; and placing the proppant particulates into the at least one fracture. | 05-29-2014 |
20140166286 | Methods of Enhancing the Conductivity of Propped Fractures with In-Situ Acidizing - Methods of treating subterranean formations comprising providing a wellbore in a subterranean formation having at least one fracture therein; providing a first treatment fluid comprising a base fluid and an acid generating inert agent; providing a second treatment fluid comprising a base fluid, and an acid generating activator; introducing the first treatment fluid into the at least one fracture; and introducing the second treatment fluid into the at least one fracture, wherein the acid generating inert agent in the first treatment fluid reacts with the acid generating activator in the second treatment fluid so as to generate an acid in the at least one fracture and create or enhance at least one microfracture therein. | 06-19-2014 |
20140190694 | Method of Treating Ultra-Low Permeable Subterranean Formations Using Proppant Particulates Coated with Degradable Material - Methods of treating an ultra-low permeability subterranean formation having a fracture complexity comprising interconnected fractures including providing a fracturing fluid comprising a base fluid and coated proppant, wherein the coated proppant comprise proppant coated with a degradable material; introducing the fracturing fluid into the ultra-low permeability subterranean formation at a rate and pressure above a fracture gradient of the ultra-low permeability subterranean formation; placing the coated proppant into a fracture of the interconnected fractures so as to form a temporarily impermeable proppant pack comprising the coated proppant therein and reduce or prevent the extension of the fracture; reducing the pressure below the fracture gradient; and degrading the degradable material coated onto the coated proppant so as to cause the temporarily impermeable proppant pack to become a permeable proppant pack. | 07-10-2014 |
20140190700 | COMPOSITIONS AND METHODS FOR CONTROLLING PARTICULATE MIGRATION IN A SUBTERRANEAN FORMATION - Stabilizers that include hydrophobically modified amine-containing polymers may be utilized as compositions or in methods for controlling particulate migration in a subterranean formation. For example, a method may include providing a treatment fluid that comprises a base fluid and a hydrophobically modified amine-containing polymer (HMAP), the HMAP comprising a plurality of hydrophobic modifications on an amine-containing polymer; introducing the treatment fluid into a wellbore penetrating a subterranean formation, the subterranean formation comprising a plurality of particulates; and allowing the HMAP to coat at least some of the particulates. | 07-10-2014 |
20140311743 | Methods and Compositions of Treating Subterranean Formations with a Novel Resin System - Methods of treating a wellbore in a subterranean formation including providing an aqueous treatment fluid comprising a liquid resin agent, wherein the liquid resin agent comprises the reaction product of a multifunctional electrophilic compound and at least one nucleophilic compound selected from the group consisting of a dimer acid; a dimer amine; any derivative thereof; and any combination thereof, and wherein the multifunctional electrophilic compound comprises least two electrophilic reactive groups; introducing the aqueous treatment fluid into the wellbore in the subterranean formation; and, curing the liquid resin agent. | 10-23-2014 |
20140311745 | Methods and Compositions of Treating Subterranean Formations with a Novel Resin System - Embodiments including methods of treating a subterranean formation comprising providing a solvent-based treatment fluid comprising a liquid resin agent, wherein the liquid resin agent comprises the reaction product of a multifunctional electrophilic compound comprising at least two electrophilic reactive groups and at least one nucleophilic compound selected from the group consisting of a dimer acid; a dimer diamine; any derivative thereof; and any combination thereof, and wherein the multifunctional electrophilic compound comprises at least two electrophilic reactive groups; introducing the solvent-based treatment fluid into the subterranean formation; and curing the liquid resin agent. | 10-23-2014 |