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Title: Wireline hydraulic retrieving tool

Abstract

A wireline retrieval tool is described for retrieving objects stuck in the interior of a tubing string in a well bore comprising an assembly adapted to be connected to and lowered on a wireline through the interior of a tubing string, the assembling comprising: (a) upper connecting means for connecting the assembly to the wireline; (b) lower connecting means for engaging a wireline pulling tool adapted to engage the object; (c) a fluid motor powered by pressurized fluid supplied by a hydraulic pump driven by an electric motor; (d) an electrical subsystem for supplying electricity; (e) an axially extending mandrel attached to the power subassembly and to the lower connector means; (f) a tubular housing surrounding the mandrel and axially slidable thereon; (g) anchoring means adapted to selectively anchor the tubular housing to the interior wall of the tubing string to prevent axial movement of the tubular housing in a direction opposite to the retrieval direction; (h) and wherein the fluid motor includes at least one variable volume pressure cylinder chamber and at least one variable volume reservoir chamber defined between the tubular housing and the mandrel, the hydraulic pump being adapted to deliver hydraulic fluid under pressure to expandmore » the pressure cylinder chamber causing axial movement between the tubular housing and the mandrel, the mandrel being urged in the retrieval direction relative to the tubular housing upon expansion of the pressure cylinder, and the mandrel urging the lower connector means, pulling tool and object in a retrieval direction when the tubular housing is anchored against the interior wall of the tubular string; and (i) wherein the anchoring means comprises a plurality of circumferentially divided slips encircling the mandrel and resiliently urged towards the mandrel, the slip housing being held at least until said slips are anchored against the interior wall of the tubing string.« less

Inventors:
;
Publication Date:
OSTI Identifier:
6126314
Patent Number(s):
US 5228507; A
Application Number:
PPN: US 7-749176
Assignee:
IMS; EDB-93-107617
Resource Type:
Patent
Resource Relation:
Patent File Date: 23 Aug 1991
Country of Publication:
United States
Language:
English
Subject:
42 ENGINEERING; MATERIALS HANDLING EQUIPMENT; DESIGN; WELLS; MATERIALS RECOVERY; BOREHOLES; FASTENERS; HYDRAULIC EQUIPMENT; MOTORS; OPERATION; POWER SUPPLIES; TOOLS; CAVITIES; ELECTRONIC EQUIPMENT; ENGINES; EQUIPMENT; MANAGEMENT; PROCESSING; WASTE MANAGEMENT; WASTE PROCESSING; 422000* - Engineering- Mining & Underground Engineering- (1980-)

Citation Formats

Obrejanu, M, and Weiler, D H. Wireline hydraulic retrieving tool. United States: N. p., 1993. Web.
Obrejanu, M, & Weiler, D H. Wireline hydraulic retrieving tool. United States.
Obrejanu, M, and Weiler, D H. 1993. "Wireline hydraulic retrieving tool". United States.
@article{osti_6126314,
title = {Wireline hydraulic retrieving tool},
author = {Obrejanu, M and Weiler, D H},
abstractNote = {A wireline retrieval tool is described for retrieving objects stuck in the interior of a tubing string in a well bore comprising an assembly adapted to be connected to and lowered on a wireline through the interior of a tubing string, the assembling comprising: (a) upper connecting means for connecting the assembly to the wireline; (b) lower connecting means for engaging a wireline pulling tool adapted to engage the object; (c) a fluid motor powered by pressurized fluid supplied by a hydraulic pump driven by an electric motor; (d) an electrical subsystem for supplying electricity; (e) an axially extending mandrel attached to the power subassembly and to the lower connector means; (f) a tubular housing surrounding the mandrel and axially slidable thereon; (g) anchoring means adapted to selectively anchor the tubular housing to the interior wall of the tubing string to prevent axial movement of the tubular housing in a direction opposite to the retrieval direction; (h) and wherein the fluid motor includes at least one variable volume pressure cylinder chamber and at least one variable volume reservoir chamber defined between the tubular housing and the mandrel, the hydraulic pump being adapted to deliver hydraulic fluid under pressure to expand the pressure cylinder chamber causing axial movement between the tubular housing and the mandrel, the mandrel being urged in the retrieval direction relative to the tubular housing upon expansion of the pressure cylinder, and the mandrel urging the lower connector means, pulling tool and object in a retrieval direction when the tubular housing is anchored against the interior wall of the tubular string; and (i) wherein the anchoring means comprises a plurality of circumferentially divided slips encircling the mandrel and resiliently urged towards the mandrel, the slip housing being held at least until said slips are anchored against the interior wall of the tubing string.},
doi = {},
url = {https://www.osti.gov/biblio/6126314}, journal = {},
number = ,
volume = ,
place = {United States},
year = {Tue Jul 20 00:00:00 EDT 1993},
month = {Tue Jul 20 00:00:00 EDT 1993}
}