CN2916104Y

CN2916104Y - Hydraulic oil pipe anchoring tools

Info

Publication number: CN2916104Y
Application number: CN 200620084029
Authority: CN
Inventors: 李常友; 刘玉国; 董社霞; 郑金中; 姜国良
Original assignee: Oil Production Technology Research Institute of Sinopec Shengli Oilfield Co
Current assignee: Oil Production Technology Research Institute of Sinopec Shengli Oilfield Co
Priority date: 2006-05-01
Filing date: 2006-05-01
Publication date: 2007-06-27
Anticipated expiration: 2016-05-01

Abstract

The utility model discloses a hydraulic oil pipe anchoring tool, which comprises an upper joint, a central pipe, an upper cone and a lower cone, a slip, a plate spring, a slip sleeve, a removing sealing ring, a lock sleeve, a piston and a cylinder sleeve. The upper end of the central pipe is connected with the upper joint. The upper cone, slip, plate spring and slip sleeve are orderly arranged on the outer upper part of the central pipe, while the lower cone, lock sleeve, piston, cylinder sleeve and removing sealing ring are orderly arranged on the lower part of the central pipe. A stopper ring and the slip sleeve are provided on the upper cone. The utility model has the advantages of energy storage and forced anchoring removal. Thus the utility model is widely used in layered water injection in oil exploitation technique, especially in inclined wells and horizontal wells.

Description

Hydraulic oil pipe grappling instrument

One, technical field

The utility model relates to oil well oil pipe anchor tool, particularly a kind of hydraulic oil pipe grappling instrument.

Two, background technology

At present, the oil pipe anchor tool that the oil field is commonly used, by sitting anchor mode branch, mainly contain mechanical type and fluid pressure type two big classes, can carry out grappling to traditional straight well oil pipe according to producing needs, effect is remarkable, but just show its special inadaptability for the grappling of inclined shaft and horizontal well: 1. the mechanical type tubing anchor is because well-known structural limitations, be difficult for sitting anchor in inclined shaft, both just sat anchor, also easily generation is disanchored midway or is met the card problem of can not disanchoring; 2. fluid pressure type tubing anchor, generally need the upper lifting pipe post when disanchoring, but in the deblocking process, because the restriction of wellbore trajectory, the slips that is anchored on the casing wall is difficult for regaining, and causes difficulty to lift pipe string, also often causes overhaul because of disanchoring, cause the loss of human and material resources, financial resources, increase cost.

Three, summary of the invention

The purpose of this utility model provides a kind of hydraulic oil pipe grappling instrument, and shortcoming or deficiency that it can overcome effectively or avoid existing in the above-mentioned prior art are disanchored effectively, solves use problem in high angle hole and the horizontal well effectively.

Hydraulic oil pipe grappling instrument described in the utility model, comprise top connection, central tube, upper/lower cone, slips, leaf spring, slip sleeve, deblocking lock ring, lock tube, piston, cylinder sleeve, described central tube upper end is connected with top connection, outer top is installed on upper cone, slips, leaf spring and slip sleeve in turn, the bottom is installed on lower cone, lock tube, piston, cylinder sleeve, rule ring reconciliation seal ring in turn, is connected with baffle ring and slip sleeve on the described upper cone.

Wherein, under the described top connection, be installed on elastic ring between central tube and the upper cone.The cross section of described elastic ring is a rectangular configuration.Described lock tube top contacts with lower cone, is fixed on the piston by seat envelope shear pin, and the bottom is connected with cylinder sleeve.Be installed on the lock ring of disanchoring between described piston upper end, central tube and the lower cone.

The utility model has following advantage compared with prior art:

1, have and force to disanchor function, on put and put tubing string and can force to disanchor;

2, have the energy-storage type retaining mechanism, prevent that effectively the slips that the tubing string wriggling causes from becoming flexible;

3, created the means of disanchoring effectively for inclined shaft, horizontal well, avoided causing the workover operation, reduced production, operating cost because of disanchoring.

Four, description of drawings

Accompanying drawing is a kind of structural representation of hydraulic oil pipe grappling instrument.

Five, the specific embodiment

Consult accompanying drawing, a kind of hydraulic oil pipe grappling instrument, comprise top connection 1, central tube 6, upper/

lower cone

5,10, slips 7, leaf spring 8, slip sleeve 9, deblocking lock ring 11, lock tube 12, piston 14, cylinder sleeve 16, central tube 6 upper ends are connected with top connection 1, outer top is installed on upper cone 5, slips 7, leaf spring 8 and slip sleeve 9 in turn, the bottom is installed on lower cone 10, lock tube 12, piston 14, cylinder sleeve 16, rule ring 18 reconciliation seal rings 17 in turn, is connected with baffle ring 2 and slip sleeve 9 on the upper cone 5.

Be installed on elastic ring 4 between top connection 1 time, central tube 6 and the upper cone 5.The cross section of elastic ring 4 is a rectangular configuration.Lock tube 12 tops contact with lower cone 10, are fixed on the piston by seat envelope shear pin 13, and the bottom is connected with cylinder sleeve 16.Be installed on the lock ring 11 of disanchoring between piston 14 upper ends, central tube 6 and the lower cone 10.Install a locking ring 15 between lock tube 12 and the piston 14.Separating seal ring 17 bottoms is fixed by deblocking shear pin 19 and rule ring 18.Locking nail 3 is installed on the baffle ring 2.

Claims

1, a kind of hydraulic oil pipe grappling instrument, comprise top connection, central tube, upper/lower cone, slips, leaf spring, slip sleeve, deblocking lock ring, lock tube, piston, cylinder sleeve, it is characterized in that described central tube upper end is connected with top connection, outer top is installed on upper cone, slips, leaf spring and slip sleeve in turn, the bottom is installed on lower cone, lock tube, piston, cylinder sleeve, rule ring reconciliation seal ring in turn, is connected with baffle ring and slip sleeve on the described upper cone.

2, hydraulic oil pipe grappling instrument according to claim 1 is characterized in that under the described top connection, is installed on elastic ring between central tube and the upper cone.

3, hydraulic oil pipe grappling instrument according to claim 2, the cross section that it is characterized in that described elastic ring is a rectangular configuration.

4, hydraulic oil pipe grappling instrument according to claim 1 is characterized in that described lock tube top contacts with lower cone, is fixed on the piston by seat envelope shear pin, and the bottom is connected with cylinder sleeve.

5,, it is characterized in that being installed on the lock ring of disanchoring between described piston upper end, central tube and the lower cone according to claim 1 or 4 described hydraulic oil pipe grappling instruments.