Patents Assigned to DARCY TECHNOLOGIES LIMITED
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Patent number: 9851852Abstract: A downhole apparatus including a tubular body, first and second ports in a wall of the body, and a fluid pressure-responsive valve arrangement having a locked first configuration associated with a first pressure in which the first port is open and the second port is closed, an unlocked second configuration associated with a second pressure higher than the first pressure in which the first port is open and the second port is closed, and a third configuration associated with a third pressure lower than the second pressure in which the second port is open and the first port is closed.Type: GrantFiled: March 7, 2013Date of Patent: December 26, 2017Assignee: DARCY TECHNOLOGIES LIMITEDInventors: Stephen Edmund Bruce, Stephen Kent, Dominic Patrick Joseph McCann, David Allan Noblett, David Grant, Ewan Colin Smith
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Patent number: 9708893Abstract: A method of injecting fluid into a formation, comprises exerting a mechanical force on a wall of a bore extending through a formation to modify the permeability of the formation; and injecting fluid into the modified formation. The mechanical force may be exerted through inflation of at least one pressure deformable member mounted on a base member. The base member may be a base pipe. The pressure deformable member may be a hollow or tubular member mounted externally of the base pipe.Type: GrantFiled: May 27, 2016Date of Patent: July 18, 2017Assignee: DARCY TECHNOLOGIES LIMITEDInventors: Stephen Edmund Bruce, Stephen Kent, Dominic Patrick McCann, David Allan Noblett, David Grant
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Publication number: 20160326840Abstract: A tubular has a retracted configuration and an extended configuration. The tubular is initially in the retracted configuration and run into a bore at least partially lined with filter cake. The tubular is extended such that a filter cake-disrupting member mounted on the tubular defines high points or otherwise has an outer surface of varying radial extent for disrupting or disturbing the filter cake.Type: ApplicationFiled: November 5, 2014Publication date: November 10, 2016Applicant: Darcy Technologies LimitedInventors: Stephen Edmund Bruce, David Grant, Ewan Colin Smith, Andrew David James Cameron
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Patent number: 9353606Abstract: A method of injecting fluid into a formation, comprises exerting a mechanical force on a wall of a bore extending through a formation to modify the permeability of the formation; and injecting fluid into the modified formation. The mechanical force may be exerted through inflation of at least one pressure deformable member mounted on a base member. The base member may be a base pipe. The pressure deformable member may be a hollow or tubular member mounted externally of the base pipe. A plurality of pressure deformable members are provided.Type: GrantFiled: November 16, 2011Date of Patent: May 31, 2016Assignee: Darcy Technologies LimitedInventors: Stephen Edmund Bruce, Stephen Kent, Dominic Patrick Joseph McCann, David Allan Noblett, David Grant
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Publication number: 20150144330Abstract: A method is for use with subterranean formations, such as oil and/or gas reservoirs. In some examples (e.g., production examples), the method improves the production from that formation. Some of the examples of the method describe selecting both an exertive force (e.g., a pressure) to apply at a wellbore, but together with a drawdown pressure at the wellbore to modify operations (e.g., improve production) at that subterranean formation. The selection of one or both of the exertive force and drawdown pressure may be based on the downhole environment at that wellbore, which can include the porosity and/or permeability of a near-wellbore formation radially surrounding a wellbore. The exertive force and drawdown pressure may be specifically selected to modify the porosity and/or permeability of the near-wellbore formation.Type: ApplicationFiled: June 14, 2013Publication date: May 28, 2015Applicant: Darcy Technologies LimitedInventors: David Allan Noblett, Stephen Edmund Bruce, Dominic Patrick Joseph McCann, Stephen Kent
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Publication number: 20150027726Abstract: A downhole apparatus including a tubular body, first and second ports in a wall of the body, and a fluid pressure-responsive valve arrangement having a locked first configuration associated with a first pressure in which the first port is open and the second port is closed, an unlocked second configuration associated with a second pressure higher than the first pressure in which the first port is open and the second port is closed, and a third configuration associated with a third pressure lower than the second pressure in which the second port is open and the first port is closed.Type: ApplicationFiled: March 7, 2013Publication date: January 29, 2015Applicant: Darcy Technologies LimitedInventors: Stephen Edmund Bruce, Stephen Kent, Dominic Patrick Joseph McCann, David Allan Noblett, David Grant, Ewan Colin Smith
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Publication number: 20130341005Abstract: A method of injecting fluid into a formation, comprises exerting a mechanical force on a wall of a bore extending through a formation to modify the permeability of the formation; and injecting fluid into the modified formation. The mechanical force may be exerted through inflation of at least one pressure deformable member mounted on a base member. The base member may be a base pipe. The pressure deformable member may be a hollow or tubular member mounted externally of the base pipe. A plurality of pressure deformable members may be provided.Type: ApplicationFiled: November 16, 2011Publication date: December 26, 2013Applicant: DARCY TECHNOLOGIES LIMITEDInventors: Stephen Edmund Bruce, Stephen Kent, Dominic Patrick Joseph McCann, David Allan Noblett, David Grant