CN205955727U - Test a tub ware in pit - Google Patents

Abstract

The utility model relates to a test a tub ware in pit belongs to oil industry water injection development in -process downhole tool matching technology field. This test a tub ware in pit is including testing the coupling and testing tube core, and it is the tubular structure to test the coupling, and upper and lower both ends are connecting thread, and its central through hole middle part is conical seat, test tube core for with test the conical body that conical seat mutually supported in the coupling cavity, the upper end is equipped with fishing head. The beneficial effects of the utility model are that: (1 )Solve quick implementing and found out the unusual reason of branch notes tubular column oil jacket pressure. Miss the season when the oil pipe leakage prevention and directly to pull the core out, sit again and seal packer continuation water injection, saved a lower oil pipe's operating cost, when if oil pipe has the leakage, can judge the leakage point according to liquid level in the oil pipe. (2 ) the utility model discloses utilize two cores designs, the pressure release has improved the salvage success rate fast, has solved indivedual wells because the casing annulus liquid level hangs down, and oil jacket pressure differential is big when testing tub, tests the difficult problem that tube core is difficult for pulling out.

Description

Pipe device is tested in down-hole

Technical field

The utility model is related to a kind of down-hole and tests pipe device, and during belonging to petroleum industry waterflooding extraction, downhole tool is supporting Technical field.

Background technology

In oilfield development process, usually in water injection well under enter packer, upper protective layer is divided with bottom water filling layer Separate.But some water injection wells are after injection a period of time, upper protective layer casing pressure occurs unexpected rising, and this phenomenon is led There are two kinds of reasons：(1) packer lost efficacy, and (2) oil pipe is missed.This is accomplished by judging upper protective layer casing pressure by testing pipe device Abnormal the reason, existing pipe device of testing can meet this demand substantially.But the defect existing is：Find after pipe tested by pipe device testing Oil pipe is intact and when packer lost efficacy, test pipe device and cannot pull out and lead to rise out whole oil pipes in well, motionless pipe difficult to realize Post sets water filling again, causes operating cost to waste.

" sliding bush type pipe testing device " of Patent No. CN200720187772 is a kind of to be applied to the sliding sleeve that oil field water well tests pipe Formula tests pipe device, is provided with cone in body interior by slide core, is provided with sealing ring, cone and cunning between main body inner wall and slide core Sealing ring being also installed between core, slide core is fixed in main body inner wall by shear pin, if there is pressure leakage after water filling, can test Whether card oil pipe has leakage, it is possible to reduce underground work workload, reduces operating cost.But weak point is to implement pressure anomaly It is impossible to wire Launching and Bailing is pulled out after reason, need to employ and repair in operation, costly.

" fishing type pipe testing device " of Patent No. CN201020003486, tests pipe device by valve ball and fisher forms, solution Whether checking oil pipe column of having determined pierces technical barrier leakage.If tubing string does not pierce leakage, fisher is can be utilized to salvage testing pipe device Ground, tubing string can continue to be on active service；If tubing string thorn leakage, by way of operation, tubing string is played out ground together with testing pipe device. But deficiency is：For the low oil-water well of oil jacket annulus liquid level, it is big to test during pipe oil jacket pressure reduction, in oil pipe head of liquid cannot pressure release, Steel wire rope cannot be pulled out when salvaging.

" one kind tests pipe device with brill is multi-functional " of Patent No. CN201320881716 is by top connection, lower contact and cylinder group Become, when needing to test pipe, first into taper hole valve seat, put into steel ball or tapered plug, form blocking, raise hydraulic pressure, carry out testing pipe.When Hydraulic pressure exceedes to be tested area within a jurisdiction and prescribes a time limit, and taper hole valve seat can cut off radially fixed screw rod pin, is shed in cylinder；Hydraulic pressure in drilling rod Pass through the gap of the cylindrical and cylinder internal control of taper hole valve seat immediately, through earial drainage screen casing pressure release.When drilling rod returns to ground, multi-functional Test pipe device and also integrally taken out of well head, after replacing is subtracted disconnected screw rod pin, taper hole valve seat resets, still reusable. Weak point is it is impossible to wire Launching and Bailing is pulled out after pressure anomaly reason implemented by this instrument, needs to employ operation, costly.

" one kind tests pipe device " of Patent No. CN201420638711, is made up of top connection, plug Pressure Block, outer tube.Apply Man-hour puts into plug from drilling tool inner chamber and is pumped to plug Pressure Block, drilling tool is carried out with pressure testing, in detection tubing string, latus rectum and tubing string are close Feng Xing, qualified after continue to suppress and cut off shear pin, plug Pressure Block and plug fall inner tube top, and during trip-out, workover fluid passes through screen casing In the inlet opening access wall at top, the effect due to precipitating chamber prevents debris blocking circulation canal.Plug Pressure Block during trip-out Go out ground with plug with drilling, it is to avoid pollution environment, realize safety in production, improve speed of application.Weak point is that this instrument falls It is impossible to individually pull out it is necessary to upper operation plays out whole tubing strings just can pull out, costly after real oil pipe is no missed.

Utility model content

The purpose of this utility model be in order to solve part test pipe device test find after pipe that oil pipe is intact and when packer lost efficacy, Test pipe device and cannot pull out and lead to play out whole oil pipes in well, cause the defect that operating cost is high, design a kind of salvagable and test Pipe device.

Down-hole of the present utility model is tested pipe device and is included testing pipe joint and test tube core, and testing pipe joint is tubular structure, up and down Two ends are connection screw thread, are conical seat in the middle part of its central through hole；It is mutual with the conical seat tested in pipe joint cavity for testing tube core The bullet of cooperation, upper end is provided with fishing head.

The beneficial effects of the utility model are：(1) solve quickly to implement and find out the reason separate injection tubing string oil jacket reduce off-flavor is normal. Fuse can directly be pulled when oil pipe is no missed out, set packer continues water filling again, the operation saving lower oil tube becomes This；If oil pipe has leakage, leakage points can be judged according to liquid level in oil pipe.(2) the utility model utilizes twin-core design, permissible Quick pressure releasing, improves fishing success ratio, and it is low due to casing annulus liquid level to solve indivedual wells, tests that during pipe, oil jacket pressure reduction is big, tests Tube core is difficult the difficult problem pulled out.

Brief description：

Fig. 1 tests the structural representation of pipe device for the utility model down-hole.

Specific embodiment：

As shown in Figure 1, the utility model includes testing pipe joint 1 and tests tube core, and testing pipe joint 1 is tubular structure, up and down Two ends are connection screw thread, are conical seat in the middle part of its central through hole；It is mutual with the conical seat tested in pipe joint 1 cavity for testing tube core The bullet of cooperation, upper end is provided with fishing head.

During construction, pipe joint 1 will be tested first with completion practice tubing string G.I.H, during normal water filling, if there is oil jacket pressure Abnormal, can putting into and test tube core, and be suppressed by oil pipe and test pipe, implementing whether oil pipe misses, thus judging that oil jacket reduce off-flavor is often former Cause.If testing oil pipe qualified explanation packer to lose efficacy, application test pulling Special fishing tool drags for the fishing head testing tube core, Pull out and test tube core, set packer continues water filling again；If it is unqualified to test oil pipe, illustrate that oil pipe is missed, now without pulling Fishing type pipe testing fuse, directly plays oil pipe, until after finding oil pipe leakage points, re-replacing oil pipe completion and set dispensing.

Preferably test tube core attached bag and include conical plug 6 and pressure release fuse 4；Conical plug 6 is the bullet being provided with conical through-hole； Pressure release fuse 4 is the bullet cooperating with the conical through-hole of conical plug 6 inner chamber, and its upper end is provided with fishing head 2, lower end is installed There is pin 7.

Sealing ring 5 is set with the preferred outer wall of conical plug 6, the outer wall of pressure release fuse 4 is set with sealing ring 3.

If occur during salvaging the outer higher inside and outside differential pressure leading to of the relatively low interior liquid level of liquid level of oil pipe larger when, for preventing Steel wire rope breaks and takes off, and after dragging for fishing head 2, slightly above carries bearing area less pressure release fuse 4, makes pressure release fuse 4 and conical plug 6 Annular gap in interior through hole, after carrying out pressure release, more above carries fishing head 2, and the pin 7 using pressure release fuse 4 lower end will be whole Test tube core to pull out.

Claims (3)

1. pipe device is tested in down-hole, including testing pipe joint (1) and testing tube core, it is characterized in that：Testing pipe joint (1) is tubular structure, on Lower two ends are connection screw thread, are conical seat in the middle part of its central through hole；Test the conical seat that tube core is and tests in pipe joint (1) cavity The bullet cooperating, upper end is provided with fishing head.

2. pipe device is tested in down-hole according to claim 1, it is characterized in that：Described tube core attached bag of testing includes conical plug (6) and lets out Pressure fuse (4)；Conical plug (6) has, in being, the bullet that through hole is conical seat；Pressure release fuse (4) be with conical plug (6) inner chamber The bullet that conical seat cooperates, its upper end is provided with fishing head (2), lower end is provided with pin (7).

3. pipe device is tested in down-hole according to claim 2, it is characterized in that：It is set with close on the described outer wall of conical plug (6) Seal ring (5), the outer wall of pressure release fuse (4) is set with sealing ring (3).