CN201908602U

CN201908602U - Guide pipe withdrawable fishing spear

Info

Publication number: CN201908602U
Application number: CN2011200171632U
Authority: CN
Inventors: 张剑; 管锡斌; 崔桂胜; 王磊; 琚政; 冯永安; 刘蓉蓉; 袁飞; 胡浩林; 李石垒
Original assignee: 李石垒
Priority date: 2011-01-14
Filing date: 2011-01-14
Publication date: 2011-07-27
Anticipated expiration: 2021-01-14

Abstract

The utility model relates to an oil field underground fishing device, and particularly to a guide pipe withdrawable fishing spear. The technical scheme is that the guide pipe withdrawable fishing spear mainly comprises a spear rod, a coupling and a guide pipe fishing overshot, wherein the spear rod is fixed on the coupling; the end part of the coupling is fixed with the guide pipe fishing overshot; slip inserts are arranged at the periphery of the spear rod; the end part of the spear rod is a conical structure; and a guide shoe is arranged at the end part of the guide pipe fishing overshot. The utility model has the benefits that by manufacturing and utilizing the guide pipe withdrawable fishing spear, the fishing reactive power operation and engineering qualitative accident caused by non-centered position of the inclined oil pipe junk on the hanger connected with the combined sleeve pipe are avoided; and the guide pipe withdrawable fishing spear greatly accelerates the construction speed, reduces the labor intensity, shortens the operation period, improves the working efficiency and construction quality, saves the cost, and avoids the accident at the same time.

Description

The skirt reversible drags for lance

One, technical field:

The utility model relates to down-hole, a kind of oil field fishing tool, and particularly a kind of skirt reversible drags for lance.

Two, background technology:

When the petroleum operations site operation, take place sometimes oil pipe fall well, meet the engineering accident of card, need salvage construction.If the trouble of lost tool in hole top of fish is tubing coupling, will select fishing tool to carry out fishing according to the down-hole situation.It is a kind of effective fishing tool that reversible drags for lance, usually in 5 cun half-covering tubes, above method ratio is easier to implement, but in the large diameter sleeve pipe as in 7 cun, 9 cun half and 5 cun half the assembled casing, at this moment the oil pipe junk might not fall into 5 cun half small casing, just tiltedly stand in the hanger place that assembled casing connects, not placed in the middle in big sleeve pipe, so only reversible drags for lance down, can't drag at all and obtain, must trip out the replacing fishing tool again, not only waste a large amount of time, prolong construction period, also increased the input of labor strength and fund.If salvage by force, drag for the lance bar and be wrapped in the junk outside, do not enter the junk inner chamber, might make accident complicated, even whole mouthful of well may be caused scrap, economic loss can't imagine that social negative effect is serious.

Three, summary of the invention:

The purpose of this utility model is exactly the above-mentioned defective that exists at prior art, provides a kind of skirt reversible to drag for lance, and the efficient of salvaging junk improves greatly, has saved cost of production.

Its technical scheme is: mainly be made up of lance bar, box cupling, skirt dipper, the lance bar is fixed on the box cupling, the end of box cupling is the skirt dipper fixedly, the periphery of described lance bar is provided with slip insert, the end of lance bar is a vertebral body structure, the end of described skirt dipper is provided with guide shoe, and make for the wolfram steel material on the guide shoe surface.

The beneficial effects of the utility model are: use this skirt reversible to drag for lance by development, avoided that tiltedly to stand in the hanger place that assembled casing connects not placed in the middle because of the oil pipe junk, idle operation of the salvaging that causes and accident resulting from poor quality of projects, accelerated speed of application greatly, reduce working strength of workers, shortened duty cycle, improved efficiency and construction quality, save cost simultaneously, avoided the generation of accident.

Four, description of drawings:

Accompanying drawing 1 is a structural representation of the present utility model;

Accompanying drawing 2 is structural representations that reversible drags for lance;

Accompanying drawing 3 is structural representations of skirt dipper;

Accompanying drawing 4 is structural representations of guide shoe.

Five, the specific embodiment:

1-4 in conjunction with the accompanying drawings, the utility model will be further described:

The utility model mainly is made up of lance bar 1, box cupling 2, skirt dipper 4, lance bar 1 is fixed on the box cupling 2, and the end of box cupling 2 is skirt dipper 4 fixedly, and the periphery of described lance bar 1 is provided with slip insert 3, the end of lance bar 1 is a vertebral body structure, and the end of described skirt dipper 4 is provided with guide shoe 5.Lance bar external diameter 58mm, long 0.6m; The slip insert that is equipped with on the lance bar, being suitable for the diameter range of salvaging object is 62-64mm, can bear the pulling force of 150kN, the long 0.3m of box cupling is used for connecting the drill string G.I.H; Skirt dipper external diameter 152mm, internal diameter 140mm, wall thickness 6mm, length overall 0.8m.With common dipper, handle the front, cuts out long 2cm inclined-plane, and the oblique angle on inclined-plane is 30 °, and plate wolfram steel material increasing instrument hardness on the inclined-plane.

Use the utility model can connect drill string very easily, when running into, the scene salvages 2 cun half oil pipe, junk is again in the assembled casing of major diameter and minor diameter, at this moment the oil pipe junk does not fall into 5 cun half small casing probably, just tiltedly stand in the hanger place that assembled casing connects, and not placed in the middle in big sleeve pipe, at this moment can use the skirt reversible to drag for lance.With it by in the drill string lower going-into-well, visiting top of fish after, slowly transfer towards the direction rotary drill column that drill string links closely, junk is introduced in the instrument, try to carry behind the pressurization 10-20kN, if on propose the load increase, illustrate to drag for and obtain.Do not show if having, transfer the fish finding top again, slowly transfer towards the direction rotary drill column that drill string links closely, after the discovery junk had been introduced in the instrument, counter-rotating drill string 2-3 circle was caught and is grabbed fish, transfers pressurization 10-20kN, stops to transfer, and tries to propose salvaging.Discovery is dragged for and is obtained just and can directly pull out of hole, and salvages successfully.After using the skirt reversible to drag for lance at the scene, fishing success ratio has brought up to 80% by 40%, has avoided dragging for the lance bar simultaneously and has been wrapped in the junk outside, does not enter the engineering accident that the junk inner chamber causes.

Claims

1. a skirt reversible drags for lance, it is characterized in that: mainly form by lance bar (1), box cupling (2), skirt dipper (4), lance bar (1) is fixed on the box cupling (2), the end of box cupling (2) is skirt dipper (4) fixedly, described lance bar (1) is provided with slip insert (3), the end of lance bar (1) is a vertebral body structure, and the end of described skirt dipper (4) is provided with guide shoe (5), and make for the wolfram steel material on the surface of guide shoe (5).