Retrieval tool for use with a slotted face wellbore deviation assembly
OwnerBobby G. Sieberinventor
Life of this patent
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Abstract
An oil field retrieval tool for retrieving a specially designed and retrievable slotted face wellbore deviation apparatus incorporating a special whipstock attached to a hydraulic or mechanical anchor packer is disclosed. The apparatus utilizes a slot cut in the face of the whipstock portion of the deviation apparatus for guiding the retrieval tool into place within a retrieving slot set in the face of the whipstock. In addition, the retrieval tool uses drilling fluid to wash the retrieval slot and guide slot clear of cuttings and has an engagement signaling means.
Claims20
A retrieval tool for lowering into a wellbore on a drill string for retrieving a slotted face wellbore deviation assembly from the wellbore in a single trip by manipulating the drill string and engaging a retrieval slot formed within the slotted face wellbore deviation assembly, comprising:
- an elongated bar, having a told end, a bottom end, a back side, a front side, and side walls;
- and,
- a retrieval hook, having a front end, a top, a bottom, a rear and side walls, said side walls of said hook and said side walls of said bar being extensions one of the other, said side walls of said hook being tapered near said front end thereof and having a radius where said told and said bottom meet said front end of said hook, and being attached to said front side of said bar near said bottom end thereof at an angle to match the retrieval slot.
A retrieval tool for lowering into a wellbore on a drill string for retrieving a slotted face wellbore deviation assembly from the wellbore in a single trip by manipulating the drill string and engaging a retrieval slot formed within the slotted face wellbore deviation assembly, comprising:
- a tubular member, having a top end and a bottom end;
- a retrieval hook, having a front end, a top, a bottom, a rear, and side walls, said side walls of said hook being tapered near said front end thereof and having a radius where said top and said bottom meet said front end of said hook, and being attached to said tubular member near said bottom end thereof at an angle to match the retrieval slot;
- a tool joint attached to said top of said tubular member;
- a wash port located in the center of said front end of said hook;
- and,
- a wash passageway extending from said wash port and in communication with said tubular member and said tool joint.
A retrieval tool for lowering into a wellbore on a drill string for retrieving an improved whipstock assembly having a slotted face from the wellbore in a single trip by manipulating the drill string and engaging a retrieval slot formed within the improved whipstock, comprising:
- a tubular member, having a top end and a bottom end;
- a retrieval hook, having a front end, a top, a bottom, a rear, and side walls, said side walls of said hook being tapered near said front end thereof and having a radius where said top and said bottom meet said front end of said hook, and being attached to said tubular member near said bottom end thereof at an angle to match the retrieval slot:
- a tool joint attached to said top of said tubular member;
- a wash port located in the center of said front end of said hook;
- and,
- a wash passageway extending from said wash port and in communication with said tubular member and said tool joint.
Dependencies are inferred from the claim text.