Patents by Inventor Lawrence J. Leising
Lawrence J. Leising has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
-
Patent number: 10233724Abstract: An element is deployed within tubing extending to a downhole tool. The downhole tool includes a hydraulic tool and a valve coupled between the conveyance string and the hydraulic tool. The valve includes a valve seat having a passage directing the fluid from the conveyance string to the hydraulic tool. Deploying the element includes landing the element on the valve seat such that the element substantially obstructs flow of the fluid through the valve seat passage. The valve is opened to direct the flow of the fluid around the hydraulic tool, wherein opening the valve utilizes pressure generated in response to the element obstructing the flow of the fluid through the valve seat passage. At least a portion of at least one of the element and the valve seat is then degraded by an amount sufficient to permit the element to pass through the valve seat passage.Type: GrantFiled: December 19, 2013Date of Patent: March 19, 2019Assignee: Schlumberger Technology CorporationInventors: Mohammad Hajjari, Manuel P. Marya, Lawrence J. Leising
-
Publication number: 20160312559Abstract: A pressure pulse tool and techniques that allow for a reciprocating piston at a frequency independent of a flow rate of fluid which powers the reciprocating. The architecture of the tool and techniques employed may take advantage of a Coand{hacek over (a)} or other implement to alternatingly divert fluid flow between pathways in communication with the piston in order to attain the reciprocation. Frequency of reciprocation may be between about 1 Hz and about 200 Hz or other suitably tunable ranges. Once more, the frequency may be enhanced through periodic exposure to annular pressure. Extended reach through use of such a pressure pulse tools and techniques may exceed about 2,000 feet.Type: ApplicationFiled: April 21, 2015Publication date: October 27, 2016Inventors: Ilia Gotlib, Shunfeng Zheng, Lawrence J. Leising
-
Publication number: 20150369003Abstract: An element is deployed within tubing extending to a downhole tool. The downhole tool includes a hydraulic tool and a valve coupled between the conveyance string and the hydraulic tool. The valve includes a valve seat having a passage directing the fluid from the conveyance string to the hydraulic tool. Deploying the element includes landing the element on the valve seat such that the element substantially obstructs flow of the fluid through the valve seat passage. The valve is opened to direct the flow of the fluid around the hydraulic tool, wherein opening the valve utilizes pressure generated in response to the element obstructing the flow of the fluid through the valve seat passage. At least a portion of at least one of the element and the valve seat is then degraded by an amount sufficient to permit the element to pass through the valve seat passage.Type: ApplicationFiled: December 19, 2013Publication date: December 24, 2015Inventors: Mohammad Hajjari, Manuel P. Marya, Lawrence J. Leising
-
Patent number: 7918279Abstract: A technique of forming perforations in a wellbore. The formation of perforations is carefully controlled by a perforating device to create a series of sequential perforations in a desired arrangement. The perforating device is lowered to a desired location in the wellbore and then moved incrementally to enable sequential perforations in the desired arrangement.Type: GrantFiled: January 21, 2009Date of Patent: April 5, 2011Assignee: Schlumberger Technology CorporationInventors: Lawrence J. Leising, Robert Michael Ramsey, Howard L. McGill
-
Patent number: 7857067Abstract: A backpressure valve. The backpressure valve may be configured to maintain a substantially controlled pressure in bottom hole assembly while simultaneously being compatible with a pressure pulse tool downhole thereof. The backpressure valve includes pressure generating capacity below its internal valve assembly so as to avoid the tendency of the assembly to throttle open and closed. Furthermore, the pressure generation is achieved in a manner avoiding cavitation. As a result, once the backpressure valve is opened, the pressure pulse tool is able to reliably communicate with surface equipment at the oilfield.Type: GrantFiled: October 17, 2008Date of Patent: December 28, 2010Assignee: Schlumberger Technology CorporationInventors: Gokturk Tunc, Zheng Rong Xu, Patrick Schorn, Lawrence J. Leising
-
Patent number: 7810555Abstract: The invention generally relates to an apparatus and/or a method for moving an round flexible member into and out of a well bore, and particularly, to an injector with two or more gripping members which bind the outer surface of the round flexible member; two or more actuators which cause the gripping members to bind or release the round flexible member; and at least one reciprocator for translating a gripping member to move the round flexible member, or for repositioning the gripping member. A method of translating a round flexible member is also provided which includes the steps of binding the outer surface of a round flexible member with at least one gripping members by engagement with an actuator, and translating a gripping member by reciprocator to move the round flexible member.Type: GrantFiled: February 12, 2007Date of Patent: October 12, 2010Assignee: Schlumberger Technology CorporationInventors: Rod W. Shampine, Lawrence J Leising, Yarom Polsky, Hubertus V. Thomeer, Sarmad Adnan
-
Publication number: 20100126717Abstract: An example instrumented formation tester for injecting fluids and monitoring of fluids described herein includes a downhole tool which can be deployed in a wellbore via a wireline or a drill string. The downhole tool may facilitate the injection of fluids into an underground formation, and the monitoring of the directions in which the injected fluids flow in the formation in an open hole environment. In particular, the downhole tool may be configured for removing the mud cake from a portion of the wellbore wall for facilitating a fluid communication with the formation to be tested.Type: ApplicationFiled: November 24, 2008Publication date: May 27, 2010Inventors: Fikri Kuchuk, Terizhandur S. Ramakrishnan, Tarek M. Habashy, Ian Falconer, Saygi Gokhan, Edward Harrigan, Anthony Goodwin, Lawrence J. Leising, Fernando Mattos
-
Patent number: 7640991Abstract: The present invention provides a ball seat apparatus for actuating a downhole component. The ball drop apparatus comprises a plurality of ball seat bores and at least one passage extending therethrough.Type: GrantFiled: August 31, 2006Date of Patent: January 5, 2010Assignee: Schlumberger Technology CorporationInventor: Lawrence J. Leising
-
Publication number: 20090301734Abstract: A backpressure valve. The backpressure valve may be configured to maintain a substantially controlled pressure in bottom hole assembly while simultaneously being compatible with a pressure pulse tool downhole thereof. The backpressure valve includes pressure generating capacity below its internal valve assembly so as to avoid the tendency of the assembly to throttle open and closed. Furthermore, the pressure generation is achieved in a manner avoiding cavitation. As a result, once the backpressure valve is opened, the pressure pulse tool is able to reliably communicate with surface equipment at the oilfield.Type: ApplicationFiled: October 17, 2008Publication date: December 10, 2009Inventors: Gokturk Tunc, Zheng Rong Xu, Patrick Schorn, Lawrence J. Leising
-
Patent number: 7543648Abstract: A system and method is provided for filtering in a wellbore during various well related operations while limiting the potential for plugging. A well screen is used for filtering particulates from a fluid at a wellbore location. To remove accumulated material and avoid plugging, the well screen may be flexed via pressure differentials created across the well screen. The flexing of the well screen breaks free the accumulated materials, thereby avoiding premature job failure.Type: GrantFiled: November 2, 2006Date of Patent: June 9, 2009Assignee: Schlumberger Technology CorporationInventors: Stephen D. Hill, Lawrence J. Leising, Frank Espinosa
-
Publication number: 20090120645Abstract: A technique is provided to form perforations in a wellbore. The formation of perforations is carefully controlled by a perforating device to create a series of sequential perforations in a desired arrangement. The perforating device is lowered to a desired location in the wellbore and then moved incrementally to enable sequential perforations in the desired arrangement.Type: ApplicationFiled: January 21, 2009Publication date: May 14, 2009Inventors: Lawrence J. Leising, Robert Michael Ramsey, Howard L. McGill
-
Patent number: 7497259Abstract: A technique is provided to form perforations in a wellbore. The formation of perforations is carefully controlled by a perforating device to create a series of sequential perforations in a desired arrangement. The perforating device is lowered to a desired location in the wellbore and then moved incrementally to enable sequential perforations in the desired arrangement.Type: GrantFiled: December 14, 2006Date of Patent: March 3, 2009Assignee: Schlumberger Technology CorporationInventors: Lawrence J. Leising, Robert Michael Ramsey, Howard L. McGill
-
Patent number: 7493960Abstract: A connector is provided that enables connection between two parts without rotation of either of the two parts. The connector comprises a first part with N engagement members; a second part with N+1 engagement members; and a sleeve having a first and second end, the first end having N engagement members for engaging the N engagement members of the first part, the second end having N+1 engagement members for engaging the N+1 engagement members of the second end.Type: GrantFiled: September 19, 2006Date of Patent: February 24, 2009Assignee: Schlumberger Technology CorporationInventors: Lawrence J. Leising, Howard L. McGill
-
Patent number: 7461695Abstract: A system and method is provided for creating a packer in a wellbore for utilization in a variety of wellbore applications. The packer is created by flowing a slurry of particular matter and liquid to a desired location. At the desired location, the slurry is dehydrated, leaving deposition of the particulate matter to create a packer.Type: GrantFiled: August 31, 2005Date of Patent: December 9, 2008Assignee: Schlumberger Technology CorporationInventors: Curtis L. Boney, Lawrence J. Leising
-
Publication number: 20080105437Abstract: A system and method is provided for filtering in a wellbore during various well related operations while limiting the potential for plugging. A well screen is used for filtering particulates from a fluid at a wellbore location. To remove accumulated material and avoid plugging, the well screen may be flexed via pressure differentials created across the well screen. The flexing of the well screen breaks free the accumulated materials, thereby avoiding premature job failure.Type: ApplicationFiled: November 2, 2006Publication date: May 8, 2008Inventors: Stephen D. Hill, Lawrence J. Leising, Frank Espinosa
-
Patent number: 7281588Abstract: The invention generally relates to apparatus and methods for moving tubulars into and out of a well bore, and particularly, a tubular injector with two or more gripping members which bind the outer surface of the tubular, two or more actuators which cause the gripping members to bind or release the tubular, and at least one reciprocator for translating a gripping member to move the tubular, or for repositioning the gripping member. A method of translating a tubular is also provided which includes the steps of binding the outer surface of a tubular with at least one gripping members by engagement with an actuator, and translating a gripping member by reciprocator to move the tubular.Type: GrantFiled: December 16, 2004Date of Patent: October 16, 2007Assignee: Schlumberger Technology CorporationInventors: Rod W. Shampine, Lawrence J. Leising, Yarom Polsky, Hubertus V. Thomeer, Sarmad Adnan
-
Publication number: 20070175637Abstract: A technique is provided to form perforations in a wellbore. The formation of perforations is carefully controlled by a perforating device to create a series of sequential perforations in a desired arrangement. The perforating device is lowered to a desired location in the wellbore and then moved incrementally to enable sequential perforations in the desired arrangement.Type: ApplicationFiled: December 14, 2006Publication date: August 2, 2007Inventors: Lawrence J. Leising, Robert Michael Ramsey, Howard L. McGill
-
Patent number: 7219726Abstract: An apparatus for use in a wellbore comprises a housing having a longitudinal axis and a mechanism having one or more impact elements adapted to move along the longitudinal axis in an oscillating manner to impart a back and forth force on the housing to vibrate the housing. In another arrangement, an apparatus for use in a wellbore comprises a housing and at least one impact element rotatably mounted in the housing. The at least one impact element is rotatable to oscillate back and forth to impart a vibration force to the housing.Type: GrantFiled: June 20, 2005Date of Patent: May 22, 2007Assignee: Schlumberger Technology Corp.Inventors: Shunfeng Zheng, Benjamin P. Jeffryes, Hubertus V. Thomeer, Lawrence J. Leising
-
Patent number: 6915845Abstract: A gravel packing system for re-entry of a screen assembly by a completion tool having an inflate packer as an isolation barrier for minimizing the necessary height of the gravel pack within the casing and thus maximizing the production interval of a well to permit a higher rate of production. The invention assures re-entry of tools to a gravel pack screen assembly for well completion following a gravel pack operation. A guiding and anchoring tool is run through a casing restriction and/or well tubing to a desired position below the restriction and/or tubing and within the casing and is actuated for anchoring. Guide fingers are formed downhole into a tool guiding configuration and the tool is left anchored within the well casing. Subsequently, a well completion tool is and guided into and latched within the guiding and anchoring tool and the inflate packer is set to enable optimum well production.Type: GrantFiled: May 23, 2003Date of Patent: July 12, 2005Assignee: Schlumberger Technology CorporationInventors: Lawrence J. Leising, Arthar M. Ali
-
Patent number: 6907927Abstract: An apparatus for use in a wellbore comprises a housing having a longitudinal axis and a mechanism having one or more impact elements adapted to move along the longitudinal axis in an oscillating manner to impart a back and forth force on the housing to vibrate the housing. In another arrangement, an apparatus for use in a wellbore comprises a housing and at least one impact element rotatably mounted in the housing. The at least one impact element is rotatable to oscillate back and forth to impart a vibration force to the housing.Type: GrantFiled: March 20, 2003Date of Patent: June 21, 2005Assignee: Schlumberger Technology CorporationInventors: Shunfeng Zheng, Benjamin P. Jeffryes, Hubertus V. Thomeer, Lawrence J. Leising