Setting tool
First Claim
1. An actuating tool apparatus for actuating a valve of a downhole mechanism, said downhole mechanism including a downhole mechanism mandrel with a sliding valve sleeve disposed therein, said actuating tool apparatus comprising:
- an actuating mandrel, for insertion in said downhole mechanism mandrel and engagement with said valve sleeve to selectively vary said sleeve between a closed position and an open position; and
a load transfer means including;
a load transfer casing adapted for connection to a pipe string and having a support surface constructed for engagement with an upper portion of said downhole mechanism mandrel located above a point of axial support of said downhole mechanism mandrel, so that said support surface may transfer a weight of said pipe string to said upper portion of said downhole mechanism mandrel when said pipe string is lowered to move said actuating mandrel and valve sleeve downward so that the weight of said pipe string is supported in compression by said downhole mechanism mandrel; and
resilient means, connected between said load transfer casing and said actuating mandrel, for urging said actuating mandrel and valve sleeve downward when said support surface is in engagement with said upper portion of said downhole mechanism mandrel.
0 Assignments
0 Petitions
Accused Products
Abstract
The present invention provides a setting tool having a tubular sleeve assembly. An upper mandrel is disposed within said sleeve assembly and interconnected therewith by a rotational screw jack means. A lower mandrel is connected to the upper mandrel by a load transfer device for governing a maximum downward force which can be applied to the lower mandrel when the setting tool is set down on a packer. The load transfer means includes a casing connected to the upper mandrel, said casing having a support surface for engagement with an upper end of a packer mandrel. Resilient spring means is provided between the casing and the lower mandrel, and is constructed so that when said support surface is in engagement with said packer mandrel, a downward force applied to said lower mandrel must be transmitted through said resilient spring means. The maximum downward force which can be applied to the lower mandrel, and correspondingly to a sliding sleeve of the packer, is equal to a force required to fully compress said resilient spring means. Also, an improved releasable locking means is provided between the upper mandrel and the sleeve assembly so that the sleeve assembly may be released to allow free rotational and axial motion of the upper mandrel relative to the sleeve assembly.
188 Citations
16 Claims
-
1. An actuating tool apparatus for actuating a valve of a downhole mechanism, said downhole mechanism including a downhole mechanism mandrel with a sliding valve sleeve disposed therein, said actuating tool apparatus comprising:
-
an actuating mandrel, for insertion in said downhole mechanism mandrel and engagement with said valve sleeve to selectively vary said sleeve between a closed position and an open position; and a load transfer means including; a load transfer casing adapted for connection to a pipe string and having a support surface constructed for engagement with an upper portion of said downhole mechanism mandrel located above a point of axial support of said downhole mechanism mandrel, so that said support surface may transfer a weight of said pipe string to said upper portion of said downhole mechanism mandrel when said pipe string is lowered to move said actuating mandrel and valve sleeve downward so that the weight of said pipe string is supported in compression by said downhole mechanism mandrel; and resilient means, connected between said load transfer casing and said actuating mandrel, for urging said actuating mandrel and valve sleeve downward when said support surface is in engagement with said upper portion of said downhole mechanism mandrel.
-
-
2. Apparatus of claim 19, wherein:
-
said load transfer casing is a cylindrical casing having an inner cavity communicating with a lower end thereof; an upper end of said actuating mandrel is received in said cavity; and said resilient means is a resilient spring means, located within said cavity between said load transfer casing and said upper end of said actuating mandrel, for urging said actuating mandrel downward relative to said load transfer casing. - View Dependent Claims (3, 4, 5)
-
-
6. A setting tool apparatus for a packer, said setting tool apparatus comprising:
-
a tubular sleeve assembly; an upper mandrel, disposed within said sleeve assembly; a lower mandrel, including a means for engagement with a sliding sleeve valve of said packer; load transfer means, connected between said upper and lower mandrels, for governing a maximum downward force which can be applied to said lower mandrel; screw jack means, connected between said upper mandrel and said sleeve assembly, for producing axial movement of said sleeve assembly relative to said upper mandrel when said upper mandrel is rotated within said sleeve assembly; and drag means, connected to said sleeve assembly, for preventing rotation of said sleeve assembly when said upper mandrel is rotated. - View Dependent Claims (7, 8, 9)
-
-
10. A setting tool apparatus in combination with a packer, said setting tool apparatus comprising:
-
a tubular sleeve assembly; an upper mandrel, disposed within said sleeve assembly; a lower mandrel, including a means for engagement with a sliding sleeve valve of said packer; and load transfer means, connected between said upper and lower mandrels, for governing a maximum downward force which can be applied to said lower mandrel, said load transfer means including; a load transfer casing, connected to said upper mandrel, and having a support surface for engagement with said packer; and resilient means, connected between said load transfer casing and said lower mandrel, said resilient means being constructed so that when said support surface is in engagement with said packer the downward force applied to said lower mandrel must be transmitted through said resilient means. - View Dependent Claims (11)
-
-
12. A load transfer device, comprising:
-
a first mandrel, having an upper cylindrical portion for connection to a drill string, a middle radially outward projecting shoulder located below said upper portion, and a lower cylindrical portion located below said shoulder, said first mandrel having an axial bore therethrough for communication with an inner bore of said drill string; an upper casing portion, having an axial bore therethrough receiving said upper cylindrical portion of said first mandrel, and having an axial counterbore receiving said shoulder of said first mandrel; a lower casing portion, connected to said upper casing portion, having an axial bore with upper and lower counterbores disposed therein; a second mandrel, having a radially outward projecting flange at a first end thereof, said second mandrel being received in said axial bore of said lower casing portion and said flange being received in said upper counterbore of said lower casing portion, said mandrel further including at a second end thereof a packer valve engaging means, and said second mandrel having an axial bore therethrough for closely receiving said lower cylindrical portion of said first mandrel; and resilient spring means, disposed between said shoulder of said first mandrel and said flange of said second mandrel, for urging said second mandrel downward relative to said first mandrel.
-
-
13. A releasably interlocking telescoping tubular assembly comprising:
-
an outer tubular member; an inner tubular member, concentrically received within said outer tubular member; a plurality of radially spaced keys, interlocking said outer and inner tubular members to prevent both rotational and axial motion therebetween; wedge means, for urging said keys radially outward out of engagement with said inner tubular member; and means, connected between said outer tubular member and said wedge means, for forcing said wedge means into engagement with said keys to release said inner tubular member. - View Dependent Claims (14, 15, 16)
-
Specification