Method and apparatus for establishing communication with a downhole portion of a control fluid pipe
AssigneeBaker Hughes Incorporated
InventorsMichael A. Carmody, Erik P. V. Eriksen, Lars Vinje
Life of this patent
Estimating the term…
Abstract
A downhole tool, such as a safety valve or a stand-alone nipple, has a tubular housing. An axially extending bore is provided in the wall of the housing. A radially extending recess is provided in the internal bore wall of the housing, encompassing the axially extending bore, and a control fluid pipe is passed through the bore and the recess. A cutting tool is mounted for radial movements in the recess and is actuated by downward jarring forces imparted by an auxiliary tool. The control pipe is severed by the cutting element and the lower severed end portion of the control pipe is concurrently crimped to close such end portion.
Claims30
The method of establishing communication with a downhole portion of a control fluid conduit extending from the surface to a downhole tool in a subterranean well, said downhole tool having a tubular housing portion, comprising the steps of:
- providing an axially extending bore in the wall of said tubular housing portion;
- providing a recess in the bore wall of said tubular housing portion encompassing a portion of said axially extending bore;
- running a control fluid conduit through said axially extending bore and said recess;
- mounting a cutting element in said recess for radial movement;
- mounting a wedge element in said tubular housing portion for axial movement relative to said cutting element;
- and
- inserting engaging means in the well for detachable engagement relative to said wedge element, whereby activation of said engaging means relatively moves said wedge element into operative engagement with said cutting element to shift said cutting element radially to sever said control fluid conduit.
The method of establishing communication with a downhole portion of a control fluid conduit extending from the surface to a downhole tool in a subterranean well, said downhole tool having a tubular housing portion, comprising the steps of:
- (1) prior to inserting the downhole tool in the well:
- a. providing an axially extending bore in the wall of said tubular housing;
- b. providing a recess in the bore wall of tubular housing portion encompassing a portion of said axially extending bore;
- c. mounting a cutting element in said recess for generally radial movement;
- d. mounting a wedge element in said housing portion for axial movement relative to said cutting element;
- (2) prior to insertion of the downhole tool in the well, inserting a control fluid conduit through said axially extending bore and said recess;
- (3) after insertion of the downhole tool in the well:
- a. inserting engaging means in the well for detachable engagement with said wedge element;
- b. actuating said activating tool to move said wedge element into relative operative engagement with said cutting element to shift said cutting element radially to sever said control fluid conduit.
Apparatus for establishing downhole fluid communication with an installed control fluid conduit comprising, in combination:
- a downhole fluid pressure operated tool having a tubular housing;
- an axially extending bore in the wall of said tubular housing;
- a control fluid conduit passing through said axially extending bore;
- a recess in the bore wall of said housing encompassing a portion of said control fluid conduit;
- a cutting tool block having a cutting edge;
- said cutting tool block being mounted in said recess for generally radial movement relative to said tubular housing with said cutting edge disposed on the radially outer portion of said cutting tool block;
- a wedge element mounted in said recess for axial movement;
- a wedge actuating sleeve;
- said wedge actuating sleeve being axially shiftably mounted in the bore of said tubular housing to move said wedge element into operative engagement with said cutting tool block;
- and
- engaging means for shifting said wedge actuating sleeve to cause said wedge element to activate said cutting tool to sever said control fluid conduit.
Apparatus of establishing downhole fluid communication with an installed control fluid conduit comprising, in combination:
- a downhole fluid pressure operated tool having a tubular housing;
- an axially extending bore in the wall of said tubular housing;
- a control fluid conduit passing through said axially extending bore;
- a recess in the bore wall of said housing encompassing a portion of said control fluid conduit;
- a cutting tool having a cutting edge;
- means for mounting said cutting tool in said recess for generally radial movement relative to said tubular housing;
- and
- engaging means for moving said cutting tool mounting means to sever said control fluid conduit by said cutting tool.
Apparatus for establishing downhole fluid communication with an installed control fluid conduit comprising, in combination:
- a downhole fluid pressure operated tool having a tubular housing;
- an axially extending bore in the wall of said tubular housing;
- an axially extending radial chamber in the bore wall of said housing encompassing a medial portion of said axially extending bore;
- a block snugly insertable in said chamber;
- said block defining an axially extending hole in series alignment with said axially extending bore;
- a control fluid conduit passing through said axially extending bore and said block hole;
- said block defining an axially extending guide slot in its radially inner surface;
- a wedge mounted in said guide slot for downward movement;
- a radial recess in the lower portion of said block encompassing a portion of said control fluid conduit;
- a cutting tool mounted in said recess for radial movement produced by movement of said wedge;
- and
- means for moving said wedge thereby severing said control fluid pipe.
The method of establishing communication with a downhole portion of a control fluid conduit extending from the surface to a downhole tool in a subterranean well, said downhole tool having a tubular housing portion, comprising the steps of:
- providing an axially extending bore in the wall of said tubular housing portion;
- providing a recess in the bore wall of said tubular housing portion encompassing a portion of said axially extending bore;
- running a control fluid conduit through said axially extending bore and said recess;
- mounting a cutting element in said recess for radial movement;
- providing an axially shiftable wedge engagable with said cutting element to move said cutting tool radially;
- inserting a wireline tool with jars in the well for detachable engagement with said axially shiftable wedge;
- and
- translating jarring movements of said wireline tool by said wedge into radial outward movements of said cutting element to sever said control fluid conduit.
Dependencies are inferred from the claim text.