Back pressure valve recovery tool and methods of use
AssigneeSaudi Arabian Oil Company
InventorsFarhan H. Shammari, Shaker M. Halawie, Mohammed M. Qethi, Hamed M. Nafa
Life of this patent
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Abstract
A back pressure valve recovery tool includes an elongate, cylindrical body having opposing upper and lower ends, and a matable feature provided at the lower end and matable with an inner profile provided on an upper end of a broken section of a back pressure valve (BPV) retrieval tool. The broken section of the BPV retrieval tool is received within a back pressure valve installed within a wellhead.
Claims19
A back pressure valve recovery tool, comprising:
- an elongate, cylindrical body having opposing upper and lower ends;
- and
- a matable feature provided at the lower end and matable with an inner profile provided on an upper end of a broken section of a back pressure valve (BPV) retrieval tool,
- wherein the matable feature exhibits a hexagonal cross-section and the internal profile exhibits a corresponding hexagonal cross-section sized to receive the matable feature, and
- wherein the broken section of the BPV retrieval tool is received within a back pressure valve installed within a wellhead.
A method for retrieving a broken section of a back pressure valve (BPV) retrieval tool, comprising:
- lowering a back pressure valve (BPV) recovery tool into a wellhead having a back pressure valve installed therein and a broken section of the BPV retrieval tool received within the back pressure valve, the BPV recovery tool including:
- an elongate, cylindrical body having opposing upper and lower ends;
- and
- a matable feature provided at the lower end and matable with an inner profile provided on an upper end of the broken section of the BPV retrieval tool;
- upon reaching the broken section of the BPV retrieval tool, rotating the BPV recovery tool until the matable feature is received within the internal profile;
- rotating the BPV recovery tool to transfer torque from the BPV recovery tool to the broken section of the BPV retrieval tool, and thereby separating the BPV retrieval tool from the back pressure valve;
- and
- removing the BPV recovery tool and the BPV retrieval tool from the wellhead.
A back pressure valve recovery tool, comprising:
- an elongate, cylindrical body having opposing upper and lower ends;
- a magnet attached to the lower end and configured to magnetically attract a broken section of a back pressure valve (BPV) retrieval tool;
- and
- a matable feature provided at the lower end and matable with an inner profile provided on an upper end of the broken section of the BPV retrieval tool,
- wherein the broken section of the BPV retrieval tool is received within a back pressure valve installed within a wellhead.
Dependencies are inferred from the claim text.