One trip through tubing window milling apparatus and method

One trip through tubing window milling apparatus and method

A one-trip through tubing window milling system is disclosed. The whipstock is delivery with the mill and downhole motor (22) in a downhole assembly which further includes MWD equipment for proper whipstock orientation. The entire assembly is run through tubing and the MWD equipment (14) orients the...

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Hauptverfasser: JEFFREY E TOULOUSE, MALCOLM D PITMAN
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Sprache:eng
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EARTH DRILLING
EARTH DRILLING, e.g. DEEP DRILLING
FIXED CONSTRUCTIONS
MINING
OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR ASLURRY OF MINERALS FROM WELLS
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creator JEFFREY E TOULOUSE
MALCOLM D PITMAN
description A one-trip through tubing window milling system is disclosed. The whipstock is delivery with the mill and downhole motor (22) in a downhole assembly which further includes MWD equipment for proper whipstock orientation. The entire assembly is run through tubing and the MWD equipment (14) orients the whipstock(28). A motor lock (24) prevents the downhole motor (22) from turning as fluid pressure is applied to properly anchor the whipstock below the production tubing. The motor lock (24) is defeated and the milling commenced using the downhole motor. At the conclusion of the window milling, the bottom hole assembly, including the mill, is removed and a retrieving tool (86) releases the whipstock for retrieval through the production tubing (30).
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The whipstock is delivery with the mill and downhole motor (22) in a downhole assembly which further includes MWD equipment for proper whipstock orientation. The entire assembly is run through tubing and the MWD equipment (14) orients the whipstock(28). A motor lock (24) prevents the downhole motor (22) from turning as fluid pressure is applied to properly anchor the whipstock below the production tubing. The motor lock (24) is defeated and the milling commenced using the downhole motor. 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subjects EARTH DRILLING
EARTH DRILLING, e.g. DEEP DRILLING
FIXED CONSTRUCTIONS
MINING
OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR ASLURRY OF MINERALS FROM WELLS
title One trip through tubing window milling apparatus and method
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