ARTIFICIAL LIFT COMPANY LIMITED Patent applications |
Patent application number | Title | Published |
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 |
20140030904 | DOWNHOLE ELECTRICAL WET CONNECTOR - A downhole electrical wet connector comprising a plug which is slidingly inserted into a socket, the socket comprising a series of wiper seals spaced apart by separation zones, each zone being individually supplied with dielectric fluid from a separate reservoir. A retractable insert is arranged in the socket and displaced by the plug during connection. The fluid pressure in each zone is individually regulated relative to ambient wellbore pressure and the pressure in adjacent zones and optionally equalised to minimise loss of fluid. | 01-30-2014 |
20140020907 | FIXED WET CONNECTION SYSTEM FOR AN ELECTRICAL SUBMERSIBLE PUMP - A wet connection system comprises a fixed tubing with an orientation profile and redundant, first and second fixed wet connectors, and an electrical submersible pump assembly (ESP) comprising a wet connector and an orientation element for engaging the orientation profile. The ESP can be reconfigured, for example, by interchanging its component modules so as to change the position of its wet connector with respect to the orientation element, whereby the wet connector on the ESP can be engaged alternatively with either one of the fixed wet connectors when the orientation element is engaged with the orientation profile in the same deployed position of the ESP. | 01-23-2014 |
20130272906 | ARMOURED CABLE FOR DOWN HOLE ELECTRICAL SUBMERSIBLE PUMP - An ESP is suspended downhole on a cable comprising spirally wound copper clad steel conductors surrounded by nonmetallic sheathing wound in an opposite spiral direction, preferably in the direction of rotation of the rotor of the ESP. The torque exerted on the cable by the ESP is reacted against the conductors, relieving stress from the sheathing so that the cable may be light in weight yet support substantial loads. | 10-17-2013 |
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 |
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 |
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 |
20110140364 | SEAL, ASSEMBLY AND METHOD, PARTICULARLY FOR DOWNHOLE ELECTRIC CABLE TERMINATIONS - A seal assembly ( | 06-16-2011 |
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 |