CN206091978U - Lou combination tool is tested to oil field sleeve pipe - Google Patents

Abstract

The utility model relates to an oil well casing tests lou technical field, in particular to lou combination tool is tested to oil field sleeve pipe. The device's oil pipe, flexible pipe, screen pipe, Y221 packer, plug sieve the wall thickness 8 millimeter from last to connecting in order down, and the screen pipe sieve diameter is 8 millimeters. The utility model discloses a can test hourglass by a tubular column completion multiple spot many times to guarantee that running string safety is intact, easy operation is convenient, has improved work efficiency, has guaranteed the requirement of suppressing of tubular column, satisfies the change requirement that the tubular column extension is shortened, can used repeatedly, and it is not fragile. Overcome present sleeve pipe and tested lou technology and can not accomplish the multiple spot and test hourglass many times, the fragile bending deformation of running string not enough.

Description

A kind of sleeve in oil field tests leakage combination tool

Technical field：

The utility model is related to oil well casing and tests leakage technical field, and more particularly to a kind of sleeve in oil field tests leakage combination tool.

Background technology：

With deepening continuously for oil field development, casing damage situation becomes increasingly conspicuous.Before general scene important procedure, all Need that sleeve pipe is carried out testing Lou printing with lead stamp to verify, next step construction can be carried out.At present sleeve in oil field tests Lou conventional work Skill mainly has following two：One kind is applied in combination from K344 packers and eccentric injection mandrel, using oil pipe and sleeve pipe pressure reduction So that packer setting, continues to clamp-on clear water after packer setting, 10MPa, voltage stabilizing 30min are typically suppressed, observe pressure drop situation, Pressure drop in principle is qualified less than 0.5MPa, and this kind tests Lou technique packer and use expanding, needs to set up oil jacket pressure reduction, And repeatedly look for Lou effect undesirable, be exactly typically disposably to look for Lou, be not suitable for many well sections and repeatedly use；Another kind is conventional Test Lou technique and enter Y211 packers under being directly, above put and put so that packer setting, injected clear water, suppress 10MPa, voltage stabilizing 30min, pressure drop is qualified less than 0.5MPa, and this kind looks for Lou technique scene to apply more, and success rate is higher, also is adapted for multiple spot multiple Sleeve pipe looks for leakage operation, but the technique there is also some drawbacks, and one when being to put to put pressurization packer setting on tubing string, and tubing string is easy Bending, in addition after packer setting, suppresses from sleeve pipe so that tubing string is being in compressive state, without telescopic mounting so that pipe Post bending is more serious, and indivedual tubing string deformations are serious after typically looking for Lou, damage tubing, cause to waste, and hold during later stage operation Easy top lifting jet pipe post, operation produces pollutant.

Utility model content：

The technical problems to be solved in the utility model is to provide a kind of sleeve in oil field and tests leakage combination tool, the arrangement achieves Can one-trip string complete multiple spot and repeatedly test Lou, and ensure that running string is intact safely, it is simple to operation, improve work effect Rate, it is ensured that the change requirement suppressed requirement, meet tubing string elongation shortening of tubing string, can reuse, and be hardly damaged.Overcome Existing set sand washing pipe technique can not complete multiple spot and repeatedly test Lou, running string fragile diastrophic deficiency.

Technical solution adopted in the utility model is：A kind of sleeve in oil field tests leakage combination tool, including oil pipe；Oil pipe, Telescoping tube, screen casing, Y221 packers, plug are sequentially connected with from top to bottom, 8 millimeters of screen casing wall thickness, and screen casing sieve diameter is 8 millis Rice.

The beneficial effects of the utility model are：The utility model can one-trip string complete multiple spot and repeatedly test Lou, and ensure Running string is intact safely, simple to operation, improves operating efficiency, it is ensured that tubing string suppresses requirement, meets tubing string and stretches The long change shortened is required, can reused, is hardly damaged.

Description of the drawings：

With reference to the accompanying drawings and detailed description the utility model is described in more detail.

Fig. 1 is structural representation of the present utility model.

Specific embodiment：

As shown in figure 1, a kind of sleeve in oil field tests leakage combination tool, including oil pipe 1；Oil pipe 1, telescoping tube 2, screen casing 3, Y221 Packer 4, plug 5 are sequentially connected with from top to bottom, 8 millimeters of 3 wall thickness of screen casing, and the sieve diameter of screen casing 3 is 8 millimeters.Oil pipe 1 is played to be built Vertical circulation and the effect of fresh water pouring；Telescoping tube 2 plays protection operation to tubing string, and after Y221 packers 4 set, tubing string is suppressed Can normally stretch, fistulae post is tested in protection；Screen casing 3 plays oil jacket balanced action；Y221 packers 4 play packing effect；Plug 5 Play a part of closed oil pipe space.

When using, when the utility model tests Lou position down to needs, rotation tubing string causes Y221 packers 4 to set, water Mud car oil pipe liquid filling, current complete liquid filling along oil pipe 1 to the sleeve pipe of screen casing 3, close sleeve gate, suppress 10MPa, at this moment Telescoping tube 2 will play compensating action, both ensure that the sealing of Y221 packers 4, again the oil pipe column of protection, using wall thickness 8 Millimeter, the screen casing 3 that sieve diameter is 8 millimeters ensure that tube column strength, and beneficial to Y221 packers 4 load deblocking is above proposed, and continue steady Pressure 30min, pressure drop is less than 0.5MPa.Such repeatedly above-mentioned flow process, it is possible to achieve multiple spot repeatedly looks for leakage operation.Sleeve pipe leakage to be found After point, cementing truck pressure release, opening sleeve gate, upper lifting pipe post Y221 packer 4 is unsealed, and sleeve pipe liquid level declines, it was demonstrated that Y221 is sealed Unseal completely every device 4, upper lifting pipe post.Wherein screen casing 3 serves the effect of drain mast current again, it is ensured that the cleaning of operation and anti- Top lifting jet pipe operation, control pollution effects are preferable.Act all tubing strings, inspection is examined whether there is well part and abnormal conditions, completed Look for leakage operation.

It is understood that above with respect to specific descriptions of the present utility model, be merely to illustrate the utility model and not The technical scheme being limited to described by the utility model embodiment, it will be understood by those within the art that, still can be with The utility model is modified or equivalent, to reach identical technique effect；As long as satisfaction uses needs, all in this reality Within new protection domain.

Claims (1)

1. a kind of sleeve in oil field tests leakage combination tool, including oil pipe (1)；It is characterized in that：Oil pipe (1), telescoping tube (2), screen casing (3), Y221 packers (4), plug (5) are sequentially connected with from top to bottom, 8 millimeters of screen casing (3) wall thickness, and screen casing (3) sieve diameter is 8 Millimeter.