Patent application number | Description | Published |
20090114450 | Controlled Variable Density Fluid for Wellbore Operations - Fluid systems may contain elements to provide changes in bulk fluid density in response to various environmental conditions. One environmental driver to the variable density is pressure; other environmental drivers include, but are not limited to, temperature or changes in chemistry. The variable density of the fluid is beneficial for controlling sub-surface pressures within desirable pore pressure and fracture gradient envelopes. The variability of fluid density permits construction and operation of a wellbore with much longer hole sections than when using conventional single gradient fluids. | 05-07-2009 |
20090209195 | AIR FLOW CONTROL MECHANISM AND METHODS - The invention relates to a method and mechanism to control air flow through an air handling system. In one aspect, a flow control device for use in an air handling system is provided. The device includes a flow control member having segmented sliding gates, wherein the flow control member is configured to selectively control an air flow stream by moving the sliding gates into the path of the air flow stream. The device further includes a controller member configured to control the movement of the sliding gates. Furthermore, the device includes a communication member configured to send and receive signals regarding the control of the air flow stream. Additionally, the device includes a power member for supplying power to the flow control member, the controller member and the communication member. In another aspect, a method of controlling an air flow stream in an air handling system is provided. | 08-20-2009 |
20100095758 | APPARATUS AND METHODS FOR COLLECTING A DOWNHOLE SAMPLE - Methods and apparatus for collecting a downhole sample are provided. The method may include conveying a sampling tool in a borehole using a first carrier, conveying a sample container in the borehole using a second carrier, and introducing a downhole sample from the sampling tool to the sample container. An apparatus includes a sampling tool disposed on a first carrier, a sample container disposed on a second carrier, wherein the first carrier and the second carrier are independently conveyable in a borehole, and a coupling connectable to the sampling tool and the sample container. | 04-22-2010 |
20100139977 | Active Vibration Control for Subterranean Drilling Operations - An active vibration control device improves drilling by actively applying a dampening profile and/or a controlled vibration to a drill string and/or bottomhole assembly (BHA). Embodiments of the present invention control the behavior of a drill string and/or BHA in order to prevent or minimize the occurrence of harmful drill string/BHA motion and/or to apply a vibration to the drill string/BHA that improves one or more aspects of the drilling process. Measurements of one or more selected parameters of interest are processed to determine whether the undesirable vibration or motion is present in the drill string or BHA and/or whether the drill string and/or BHA operation can be improved by the application of a controlled vibration. If either or both conditions are detected, corrective action is formulated and appropriate control signals are transmitted to one or more devices in the drill string and/or BHA. | 06-10-2010 |
20100267328 | AIR-CONDITIONING GRILL SYSTEM - The present invention is generally directed to an apparatus and method for providing a single-size register grill system. In one aspect, a grill system which can be adapted for use with multiple sizes of register boxes is provided. The grill system includes a grill funnel configured to be attached to a register box, the grill funnel having a body with an airflow pathway that includes an airflow opening and a plurality of secondary airflow openings, wherein the secondary airflow openings are initially closed. The grill system further includes a grill assembly having a plurality of airflow adjustment members for controlling the airflow through the airflow pathway, wherein the grill assembly is attached to the grill funnel. In another aspect, a method of using a grill system is provided. In yet a further aspect, a grill funnel for use with a register box and a grill is provided. | 10-21-2010 |
20110048802 | Method and Apparatus for Controlling Bottomhole Temperature in Deviated Wells - An apparatus and method for reducing temperature along a bottomhole assembly during a drilling operation is provided. In one aspect the bottomhole temperature may be reduced by drilling a borehole using a drill string having a bottomhole assembly at an end thereof, circulating a fluid through the drill string and an annulus between the drill string and the borehole, diverting a selected portion of the fluid from the drill string into the annulus at a selected location above the drill bit to reduce pressure drop across at least a portion of the bottomhole assembly to reduce temperature of the bottomhole assembly during the drilling operation. | 03-03-2011 |
20110048806 | Apparatus and Methods for Controlling Bottomhole Assembly Temperature During a Pause in Drilling Boreholes - A method for reducing temperature of a bottomhole assembly during a drilling operation is disclosed, that, in one aspect, may include: drilling a borehole using a drillstring including a bottomhole assembly by circulating a fluid through the drillstring and an annulus between the drillstring and the borehole, pausing drilling, continuing circulating the fluid through the dill string and the annulus. The method further includes diverting a portion of the fluid from the drillstring into the annulus at a selected location above the drill bit to reduce temperature of the bottomhole assembly. | 03-03-2011 |
20120038232 | AXIAL MAGNETIC SUSPENSION - The present invention generally relates to an apparatus and method for axially supporting a shaft. In one aspect, a magnetic suspension system for supporting a shaft in a housing is provided. The magnetic suspension system includes an array of magnet members disposed between the shaft and the housing. The array of magnet members comprising a first magnet member, a second magnet member, and a third magnet member, wherein the first magnet member and the second magnet member generate a first force that is substantially parallel to a longitudinal axis of the shaft and the second magnet member and the third magnet member generate a second force that is substantially parallel with the longitudinal axis of the shaft The first force and the second force are configured to position the shaft axially within the housing. In another aspect, a method of supporting a shaft along a longitudinal axis of a housing is provided. In a further aspect, a suspension system for supporting a shaft in a housing is provided. | 02-16-2012 |
20120067582 | APPARATUS AND METHOD FOR FRACTURING PORTIONS OF AN EARTH FORMATION - A method of fracturing an earth formation is disclosed. The method includes: isolating a section of a borehole in the earth formation; introducing a fluid into the isolated section and pressurizing the isolated section from a first pressure to a second pressure; introducing a stress concentration to a borehole wall at least one location in the isolated section when the fluid is at the selected pressure or during the pressurization; and initiating a hydraulic fracture in the earth formation at the at least one location. | 03-22-2012 |
20120087729 | Temporary Containment of Oil Wells to Prevent Environmental Damage - A containment vessel is moved proximate to and preferably surrounding the wellhead, such that leaking oil enters an interior chamber of the vessel. A fluid pump of the containment system is actuated to flow leaking hydrocarbon fluid through a conduit toward a collection sump. A controller controls the speed or volume of a fluid pump to maintain suction force within the interior chamber, or the pressure at wellhead annulus site (PWAS) at a set point that is based on seabed pressure. | 04-12-2012 |
20130087338 | WELLBORE OPERATIONS USING CONTROLLED VARIABLE DENSITY FLUID - Fluid systems may contain elements to provide changes in bulk fluid density in response to various environmental conditions. One environmental driver to the variable density is pressure; other environmental drivers include, but are not limited to, temperature or changes in chemistry. The variable density of the fluid is beneficial for controlling sub-surface pressures within desirable pore pressure and fracture gradient envelopes. The variability of fluid density permits construction and operation of a wellbore with much longer hole sections than when using conventional single gradient fluids. | 04-11-2013 |
20140347152 | Axial Magnetic Suspension - The present invention generally relates to an apparatus and method for axially supporting a shaft. In one aspect, a magnetic suspension system for supporting a shaft in a housing is provided. The magnetic suspension system includes an array of magnet members disposed between the shaft and the housing. The array of magnet members comprising a first magnet member, a second magnet member, and a third magnet member, wherein the first magnet member and the second magnet member generate a first force that is substantially parallel to a longitudinal axis of the shaft and the second magnet member and the third magnet member generate a second force that is substantially parallel with the longitudinal axis of the shaft The first force and the second force are configured to position the shaft axially within the housing. In another aspect, a method of supporting a shaft along a longitudinal axis of a housing is provided. In a further aspect, a suspension system for supporting a shaft in a housing is provided. | 11-27-2014 |