PETROWELL LIMITED Patent applications |
Patent application number | Title | Published |
20160123112 | CHOKE - A choke controlling fluid flow in a well has a conduit with an inlet and an outlet, and a flow restrictor comprising first and second choke members ( | 05-05-2016 |
20160032690 | Actuating Apparatus - A downhole actuating apparatus ( | 02-04-2016 |
20150369006 | METHOD AND APPARATUS FOR ACTUATING DOWNHOLE TOOLS - A method of actuating at least one of a plurality of downhole tools ( | 12-24-2015 |
20150322748 | SWITCHING DEVICE FOR, AND A METHOD OF SWITCHING, A DOWNHOLE TOOL - The switching device comprises an electronic switch embedded within a downhole tool ( | 11-12-2015 |
20150285063 | METHOD OF AND APPARATUS FOR COMPLETING A WELL - A completion apparatus for completing a wellbore includes a tool to alternatively open and close a throughbore; a tool to alternatively open and close an annulus between the outer surface of the completion and the inner surface of the wellbore; a tool to alternatively provide and prevent a fluid circulation route from the throughbore of the completion to the annulus; and at least one signal receiver and processing tool capable of decoding signals received. The apparatus is run into the well bore, the throughbore is closed and the fluid pressure in the tubing is increased to pressure test the completion; the annulus is closed and a fluid circulation route is provided from the throughbore to the annulus and fluid is circulated through the production tubing into the annulus and back to surface. The fluid circulation route is then closed and the throughbore is opened. | 10-08-2015 |
20150240628 | WELL ISOLATION | 08-27-2015 |
20150034329 | Downhole Tool and Method - A downhole tool ( | 02-05-2015 |
20140306853 | Antenna for Use in a Downhole Tubular - An antenna for use in a downhole tubular. The antenna comprises a generally cylindrical housing and a coiled conductor located within a portion of the housing and separated therefrom by insulating material. The portion of housing has a greater internal diameter than an external diameter of the coiled conductor. | 10-16-2014 |
20140116680 | Packer - A packer for a well is described. The packer comprises a seal element and seal setting apparatus. The seal setting apparatus is moveable with respect to the seal element in a setting direction to apply a setting force to the seal element to move the seal element from a run-in configuration to a set configuration in which, in use, the seal element forms a contact seal with a conduit wall. In use, the packer is arranged such that, in the set configuration, a pressure differential across the packer, which creates a force in the setting direction, will increase the setting force applied by the seal setting apparatus to the seal element to maintain the seal. | 05-01-2014 |
20140102708 | Selective Fracturing System - A method of fracturing a formation surrounding a wellbore comprises the steps of:
| 04-17-2014 |
20140034291 | METHOD OF AND APPARATUS FOR COMPLETING A WELL - A completion apparatus for completing a wellbore includes a tool to alternatively open and close a throughbore; a tool to alternatively open and close an annulus between the outer surface of the completion and the inner surface of the wellbore; a tool to alternatively provide and prevent a fluid circulation route from the throughbore of the completion to the annulus; and at least one signal receiver and processing tool capable of decoding signals received. The apparatus is run into the well bore, the throughbore is closed and the fluid pressure in the tubing is increased to pressure test the completion; the annulus is closed and a fluid circulation route is provided from the throughbore to the annulus and fluid is circulated through the production tubing into the annulus and back to surface. The fluid circulation route is then closed and the throughbore is opened. | 02-06-2014 |
20140014370 | Centraliser - A centraliser for centralising a tubular in a conduit is described. The centraliser comprises a body comprising a upper body portion and a lower body portion and a plurality of arms linking the upper body portion to the lower body portion. Relative movement of the upper and lower body portions towards each other causes the arms to buckle radially outwards into a set configuration in which the arms are engaged, in use, with a conduit. | 01-16-2014 |
20130248030 | VALVE ASSEMBLY - A valve assembly comprises a conduit having a throughbore and defining a longitudinal axis, a sealing member that is moveable between an open configuration in which the throughbore of the conduit is open, and a sealing configuration in which the sealing member is arranged to substantially obturate the throughbore of the conduit, wherein in the sealing configuration, the sealing member seals the throughbore along a sealing line at least a part of which is angled relative to a direction perpendicular to the axis of the throughbore. | 09-26-2013 |
20130186644 | Mechanical Counter - A mechanical counting device for actuating a plurality of output devices, the device comprising: linear indexing means adapted to count a plurality of actuating signals and to cause actuation of the output devices when a predetermined number of actuating signals for each output device has been received, wherein the mechanical counting device is adapted to cause actuation of a particular device when a different predetermined number of actuating signals has been received such that the output devices are sequentially actuable. | 07-25-2013 |
20130025868 | Downhole Actuating Apparatus - A mechanical counting device for actuating a plurality of output devices, the device comprising: linear indexing means adapted to count a plurality of actuating signals and to cause actuation of the output devices when a predetermined number of actuating signals for each output device has been received, wherein the mechanical counting device is adapted to cause actuation of a particular output device when a different predetermined number of actuating signals has been received such that the output devices are sequentially actuable. | 01-31-2013 |
20110297254 | FLOW CONTROL DEVICE - A flow control device typically for protecting a seal ( | 12-08-2011 |
20110290504 | CONTROL SYSTEM - An improved control system for use in a subterranean well is described. The system comprises at least one apparatus positioned within the subterranean well, at least one power generation device positioned within the subterranean well, the at least one power generation device adapted to supply electrical power to the at least one apparatus and at least one control line positioned in the subterranean well. The at least one control line is adapted to supply a hydraulic pressure applied from surface to the at least one power generation device from which the at least one power generation device generates electrical power. | 12-01-2011 |
20110277986 | RUNNING ADAPTER - A plug for sealing a conduit comprises a body having a first section and a second section, and at least one seal element for creating a seal between the plug and the conduit. The at least one seal element is adapted to be energised by movement in a setting direction of the first body section relative to the second body section. The plug further comprises seal locking means comprising a first portion and a second portion wherein as the at least one seal is energised, the seal locking means first portion is rotatable unidirectionally relative to the seal locking means second portion to take up the movement of the first body section relative to the second body section in the setting direction and prevent movement of the first body section relative to the second body section in a releasing direction, opposite the setting direction. In one embodiment the seal locking means first portion is a locking nut. | 11-17-2011 |
20110127768 | IMPROVED TUBING SECTION COUPLING - A tubing section coupling comprises a first tubular portion and a second tubular portion ( | 06-02-2011 |
20110114332 | TUBING SECTION - The tubing section comprises an outer skin ( | 05-19-2011 |
20110005776 | IMPROVED CENTRALISER - A centraliser ( | 01-13-2011 |
20100170681 | TREE PLUG | 07-08-2010 |