Patent application number | Description | Published |
20090297255 | DRIVE MEANS - A drive means for downhole use comprises an input shaft and an output shaft, the input shaft being coupled to a means of rotation, the input shaft and the output shaft being torsionally coupled, the output shaft being coupled to the rotor of the progressive cavity pump, the input shaft lies in a first axis and the output shaft lies in a second axis, the second axis being parallel to the first axis but spaced from it so that the output shaft rotates about its axis while describing a circular path. | 12-03-2009 |
20100044026 | OIL WELL PUMP - A pump system for use in with a downhole pipe string has a pump comprising at least one cylinder with at least one piston inside the cylinder, the movement of the piston causing fluid to be drawn into the pump through a pump inlet before being pushed out through a pump outlet. The pump is housed in a tube having a cammed surface formed by internal wall of the tube, and the piston has a cam follower such that rotation of the piston relative to the tube causes the piston to move relative to the cylinder Further, a pump system is shown which has two or more such pumps arranged along the downhole pipe string, the pump outlets feeding into a common manifold. The strokes of the piston or pistons of one pump may be out of step with the strokes of the piston or pistons of another pump such that the outlet stream is more uniform. | 02-25-2010 |
20100163309 | Sub-Surface Deployment Valve - A sub surface deployment valve which is particularly suitable for use in underbalanced drilling operations which can be installed through an existing tubular string comprises a radially expandable body (1) having an internal bore and a valve element ( | 07-01-2010 |
20110140364 | SEAL, ASSEMBLY AND METHOD, PARTICULARLY FOR DOWNHOLE ELECTRIC CABLE TERMINATIONS - A seal assembly ( | 06-16-2011 |
20110259580 | CABLES FOR DOWNHOLE USE - A cable and coiled tubing suspends an electrically powered tool in a borehole and providing the tool with electrical power by the cable, the cable being disposed in the coiled tubing, the cable incorporating a conducting member which carries the majority of the tensile stress on the cable, and without the cable being secured along its length to the inside of the coiled tubing. The cable may be capable of supplying high voltage electrical power, in which case the cable comprises a conducting member having a steel core, an outer cladding of copper, and at least one insulating layer surrounding the outer cladding of copper, the copper making up between 20% and 40% of the total copper and steel content of the cable, the cable being able to support at least its own weight. | 10-27-2011 |
20120045917 | ELECTRICAL WET CONNECTOR IN DOWNHOLE ENVIRONMENT - An electrical connection for use in boreholes or other remote environment has a a first connection assembly having a first ( | 02-23-2012 |
20130147410 | METHOD AND APPARATUS FOR CONTROL OF A SYNCHRONOUS PERMANENT MAGNET MOTOR, PARTICULARLY OVER A LONG CABLE IN A WELL - A synchronous permanent magnet motor is controlled independently of position sensing means by determining the system parameters including the motor impedance and back-emf and the cable impedance and supplying power according to a predefined voltage:frequency ratio which is determined based on said system parameters to provide a desired rate of acceleration determined by the supply voltage. | 06-13-2013 |
Patent application number | Description | Published |
20100143166 | DOWNHOLE PUMPING SYSTEM - A downhole motor and pump assembly for use in a tube has a support that suspends the assembly downhole, a housing capable of forming a seal against an inside surface of the tube to divide the tube into a lower region below the seal and an upper region above the seal, an electric motor, and a power supply for the electric motor. A hydraulic pump driven by the electric motor has a high pressure output. A piston is operated by a directional valve such that the high pressure output from the hydraulic pump is directed by the directional valve alternately above and below the piston so as to reciprocate the piston. A fluid pump driven by the piston pumps well fluid from the lower region to the upper region. | 06-10-2010 |
20110180272 | WET CONNECTION SYSTEM FOR DOWNHOLE EQUIPMENT - A wet connection system suitable for use in hydrocarbon wells preferably comprises one or more elongate, small diameter conduits ( | 07-28-2011 |
20120132442 | CONTROL OF FLUID FLOW IN OIL WELLS - A flow restrictor for controlling the flow of cement or other fluid in oil wells comprises a plurality of restrictor elements, each defining first and second apertures, which are assembled in a stacked configuration and slidingly inserted into the well casing or other tubing so that the first apertures define a direct flowpath, preferably including a non-return valve, and the second apertures define a second, indirect flowpath between the elements and the inner surface of the tubing. The elements include seals for fluidly sealing each element in the bore of the tubing which are preferably slidably retractable and resiliently radially outwardly biased so as to adapt conformably to different tubing types having different internal diameters. The restrictor may slide along the tubing in use. | 05-31-2012 |
20120222853 | METHOD OF DEPLOYING AND POWERING AN ELECTRICALLY DRIVEN DEVICE IN A WELL - According to the present invention, there is provided a system for installing a powered device in a downhole tube, the system comprising a power line disposed along a production tube and terminating in a first power connector and an orientation profile disposed in the vicinity of the first power connector. An assembly includes a powered device having a second power connector and an extending orientation means capable of radial outward movement from the assembly. The powered device being lowered down the production tube, causing the extending orientation means to be urged radially outwards to engage with the orientation profile and orient the device, so that the first power connector means and second power connector means engage to connect the powered device to the power line in an automatic manner. | 09-06-2012 |
20120222856 | COILED TUBING DEPLOYED ESP - According to the present invention, there is provided a well pumping system comprising a length of coiled tubing extending to the surface of the well, a first electric pump, a first electric motor, and a sealing means that seals against the side of the well. The sealing means include a first fluid path through which coiled tubing is in fluid communication with the well beneath the sealing means, and a second fluid path through which first electric pump is in fluid communication with the well beneath the sealing means. | 09-06-2012 |
20130062050 | MATING UNIT ENABLING THE DEPLOYMENT OF A MODULAR ELECTRICALLY DRIVEN DEVICE IN A WELL - An electric pump assembly is provided in a well, the pump comprising an electric motor module having a first outer housing and a first mating means, an electric pump module having a pump inlet and a pump outlet, and a second outer housing and a second mating means. In one aspect, the electric motor module and electric pump module are capable of being reversibly joined together by the first and second mating means, as the electric motor module includes a first rotating member that is capable of rotating relative to the first outer housing, and the electric pump module includes a second rotating member that is capable of rotating relative to the second outer housing. In this way, the first rotating member and second rotating member can transfer torque when the electric motor module and electric pump module are joined. In another aspect, a flowpath is provided in each module, the flowpaths fluidly communicating when the modules are joined. | 03-14-2013 |
20130308894 | Deployment of fibre optic cables and joining of tubing for use in boreholes - A Deployment of fibre optic cables and joining of tubing for use in boreholes. A self supporting fibre optic cable ( | 11-21-2013 |
20140284064 | Wet Connection System for Downhole Equipment - A wet connection system suitable for use in hydrocarbon wells preferably comprises one or more elongate, small diameter conduits ( | 09-25-2014 |
20150288311 | Method and Apparatus for Control of a Synchronous Permanent Magnet Motor, Particularly Over a Long Cable in a Well - A synchronous permanent magnet motor is controlled independently of position sensing means by determining the system parameters including the motor impedance and back-emf and the cable impedance and supplying power according to a predefined voltage:frequency ratio which is determined based on said system parameters to provide a desired rate of acceleration determined by the supply voltage. | 10-08-2015 |
Patent application number | Description | Published |
20080196880 | Electric submersible pump and motor assembly - An assembly for downhole applications comprises an electric motor, a pump driven by the electric motor, the assembly being suspended from and lowered through the well on a deployment tube, the electric motor and the pump both being hollow such that a bore passes from the tube past the motor and the pump opening at the bottom of the assembly such that a device suspended on a wireline may be lowered through the deployment and pass through the electric motor and pump. | 08-21-2008 |
20080196902 | Wireline or coiled tubing deployed electric submersible pump - An electric submersible pump and motor assembly for downhole applications, comprises an electric motor, a pump driven by the electric motor, a deployment line upon which the electric motor and pump may be lowered down through a production tube, and a sealing means for sealing the assembly against the production tube, the motor having a stationary non-rotating through bore, the assembly having an inlet beneath the sealing means through which well bore fluid flows, which leads through the pump and the stationary non-rotating through bore of the motor, and an outlet open to the well bore above the sealing means through which the well bore fluid exits. The outlet is located beneath junction between the deployment line and the assembly. The deployment line includes a power cable. | 08-21-2008 |
20090200078 | Method of drilling a well at or under balance using a electrical submersible pump - A drilling system for use in a well bore consists of a drill string, an electrically powerable pump ( | 08-13-2009 |
20120308174 | WELL-BORE SENSING - A sensor system for use in a wellbore has a fiber-optic cable and a tool connected to the cable and moveable through the well bore. The tool in turn has an array of members arranged around a circumference of the tool and extending radially outwardly to contact an inner surface of the wellbore or a tube in the wellbore, and an array of Bragg grating fiber-optic sensors each configured such that movement of a respective sensing element results in a measurable value or change in the respective sensor. The sensors are arranged to sense a common physical parameter to be measured at a plurality of discrete positions around a circumference of the wellbore or the tube in the wellbore. | 12-06-2012 |