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US 10,329,887 B2Granted
Dual-walled coiled tubing with downhole flow actuated pump
AssigneeBaker Hughes, A Ge Company, LLC
InventorsSilviu Livescu, Timothy T. Ramsey
Life of this patent
Estimating the term…
Abstract
Dual-walled coiled tubing assemblies are used to dispose a flow actuated pump into a wellbore. Dual-walled coiled tubing assemblies include an inner coiled tubing string and an outer coiled tubing string.
Claims8
A fluid pumping arrangement for use in pumping a wellbore fluid from a subterranean location in a wellbore, the fluid pumping arrangement comprising:
- a flow actuated pump;
- a dual-walled coiled tubing running string for disposing the flow actuated pump into the wellbore, the dual-walled coiled tubing running string having:
- an inner coiled tubing string defining an inner coiled tubing central axial pathway along its length;
- an outer coiled tubing string radially surrounding the inner coiled tubing string;
- a first fluid flow path is defined within the inner coiled tubing string;
- a second fluid flow path is defined radially between the inner coiled tubing string and the outer coiled tubing string;
- a third fluid flow path is defined radially between the outer coiled tubing string and a wall of the wellbore;
- wherein power fluid for actuating the flow actuated pump is flowed to the flow actuated pump through the first fluid flow path;
- and
- wherein exhausted power fluid is flowed through the third fluid flow path and wellbore fluid is flowed through the second fluid flow path.
7 more elements
A fluid pumping arrangement for dewatering a gas well, the fluid pumping arrangement comprising:
- a flow actuated pump to pump water from the gas well;
- a dual-walled coiled tubing running string for disposing the flow actuated pump into the wellbore, the dual-walled coiled tubing running string having:
- an inner coiled tubing string defining an inner coiled tubing central axial pathway along its length;
- an outer coiled tubing string radially surrounding the inner coiled tubing string, the outer coiled tubing string defining an outer coiled tubing string central axial passage along its length;
- a first fluid flow path defined along the inner coiled tubing central axial pathway;
- a second fluid flow path defined radially between the inner coiled tubing string and the outer coiled tubing string;
- a third fluid flow path is defined radially between the outer coiled tubing string and a wall of the wellbore;
- power fluid for actuating the flow actuated pump is flowed to the flow actuated pump through the first fluid flow path;
- and
- commingled exhausted power fluid and wellbore fluid are flowed through either or both of the second and third fluid flow path.
7 more elements
A method of pumping wellbore fluid from a subterranean location in a wellbore, the method comprising the steps of:
- disposing a fluid pumping arrangement into the wellbore, the fluid pumping arrangement having a dual-walled coiled tubing running string and a flow actuated pump affixed to the dual-walled coiled tubing running string;
- the dual-walled coiled tubing running string includes an inner coiled tubing string and an outer coiled tubing string;
- flowing a power fluid through a first fluid flow path which is defined radially within the inner coiled tubing running string to actuate the flow actuated pump;
- a second fluid flow path is defined radially between the inner coiled tubing string and the outer coiled tubing string;
- and
- wellbore fluid is flowed away from the flow actuated pump along the second fluid flow path.
3 more elements
Dependencies are inferred from the claim text.