US 8,757,262 B2Granted

Apparatus and method for abrasive jet perforating and cutting of tubular members

AssigneeTD Tools, Inc.

InventorThomas L. Dotson

Life of this patent

Estimating the term…

Loading patent…

Abstract

An apparatus for abrasive jet cutting comprises an abrasive jet perforating tool coupled rotatably to a tubing string and a horizontal indexing tool coupled connectably to the perforating tool. A tubing swivel, an extension tool with protective sleeve, and an anchor may also be used. A method for abrasive jet cutting comprises determining well parameters for a well; assembling, according to the well parameters, the apparatus for abrasive jet perforating; and using the perforating tool to perforate tubular members in the well. A horizontal indexing tool is used to rotate the perforating tool and the perforating tool is used to cut tubular members in the well. An extension tool with a protective sleeve is used to protect the apparatus. A tubing swivel may be used to allow the perforating tool to rotate freely and an anchor may be used to prevent the perforating tool from moving vertically.

Claims22

Dependent claims

An apparatus for performing abrasive jet cutting, comprising:

an abrasive jet perforating tool coupled rotatably to a tubing string in a well bore, wherein the abrasive jet perforating tool comprises:
a generally cylindrically-shaped tube comprising a side, an upper end, and a lower end;
an upper threaded connection fitting in the upper end of the tube;
a plurality of holes drilled into the side of the tool;
access holes positioned in the side of the tool above the plurality of holes;
a fluid channel extending longitudinally from the upper threaded connection fitting to the plurality of holes;
abrasive jets inserted in at least some of the plurality of holes, wherein the abrasive jets are inserted in at least some of the plurality of holes using the access holes;
and
a lower threaded connection fitting in the lower end of the tube, wherein the lower threaded connection fitting in the lower end of the tube is unconnected to the fluid channel;
and
a horizontal indexing tool cycled by a vertical movement of the tubing string, coupled connectably to the abrasive jet perforating tool, and used to rotate the abrasive jet perforating tool radially in the wellbore.

8 more elements

A method for performing abrasive jet cutting, comprising:

determining well parameters for a well;
assembling, according to the well parameters, an apparatus for performing abrasive jet cutting in a wellbore, the apparatus comprising:
an abrasive jet perforating tool coupled rotatably to a tubing string, wherein the abrasive jet perforating tool comprises:
a generally cylindrically-shaped tube comprising a side, an upper end, and a lower end;
an upper threaded connection fitting in the upper end of the tube;
a plurality of holes drilled into the side of the tool;
access holes positioned in the side of the tool above the plurality of holes;
a fluid channel extending longitudinally from the upper threaded connection fitting to the plurality of holes;
abrasive jets inserted in at least some of the plurality of holes, wherein the abrasive jets are inserted in at least some of the plurality of holes using the access holes;
and
a lower threaded connection fitting in the lower end of the tube, wherein the lower threaded connection fitting in the lower end of the tube is unconnected to the fluid channel;
and
a horizontal indexing tool cycled by a vertical movement of the tubing string, coupled connectably to the abrasive jet perforating tool, and used to rotate the abrasive jet perforating tool radially in the well bore;
and
using the abrasive jet perforating tool to perforate tubular members in the well.

12 more elements

Dependencies are inferred from the claim text.