CN206785366U - Underground foreign matter trapping instrument - Google Patents

Abstract

The utility model discloses underground foreign matter to trap instrument, including filter sieve tube, in addition to sedimentation trapping cylinder, and the sedimentation trapping jacket casing is outside filter sieve tube and forms annular space between the two, and the inlet opening of radial direction is opened up on the sedimentation trapping cylinder.The inlet opening uniform three with height, a diameter of Φ 25mm, it is uniform in 120 °.The sedimentation trapping cylinder upper end connection reducer union.The filter sieve tube upper end connects reducer union, and lower end then connects interior pipe plug.The instrument is used for prevention in oil exploitation and effects a radical cure well of being lain caused by foreign matter.The problems such as evade completion increases screen casing and plug control using completion tail pipe, can only achieve prevention purpose, does not reach the effect of radical cure, and the oil well production cycle is short, and labor strength is big, and operation maintenance cost is high.

Description

Underground foreign matter trapping instrument

Technical field

It the utility model is related to petroleum industry underground equipment, specifically underground foreign matter trapping instrument.

Background technology

Oil recovery factory is with the continuous extension of construction cycle and the experimental application of various yield-increasing techniques, except engineering factor causes Pipe, bar, pump, envelope, outside the most common failure such as filter, stopping production problem caused by " foreign matter " (broken rubber, weeds, car bits) gradually shows. 2015 are only 17 mouthfuls of dead well caused by operation group (East) cuts " foreign matter " with regard to solution, and the cycle that stops production reaches more than 40 days, influences The ton of yield more than 120, consume more than 80 ten thousand yuan of operating cost, more than 150 ten thousand yuan of direct economic loss.The influence major embodiment of " foreign matter " ：First, causing travelling valve, standing valve to be not closed completely can not normally produce and stop production.Second, deep well pump pump efficiency is set to reduce shadow Ring yield.Third, whole development scheme is impacted.Mode originally is using completion tail pipe increase screen casing and plug control. Certain effect is achieved, still, because each link is based on " anti-", does not often reach the effect of radical cure, oil well production be present The problems such as cycle is short, and operating cost is high.

The completion tail pipe increase screen casing that scene uses at present adds the scheme that plug controls, and " foreign matter " in well is still detained In pit shaft, hidden danger does not eliminate, and can not realize the essence solution of from " prevention " to " radical cure ".

Publication number 203050574U, publication date 2013-07-10 disclose a kind of coiled tubing drilling cuttings capturing device, including It is the four-way of symmetrical structure, two manual flat valves, three threeways, two cartridge filters, two standpipes, two cocks after connection Valve, two filtering coupling sleeves and two cartridge filter extracting tools, the annexation of symmetrical structure are：Four-way manually flat board Valve connects threeway, and cartridge filter is arranged in standpipe, and threeway communicates with one end of cartridge filter and standpipe, is provided with out in the middle part of standpipe Mouthful, exit is connected with plug valve, and plug valve is connected with threeway, threeway connection choke manifold, the other end of cartridge filter and standpipe Blocked by filtering coupling sleeve, cartridge filter extracting tool connects cartridge filter by filter cylinder connector.The utility model is applied to not The trapping of same type, different-grain diameter drilling cuttings, the requirement of continuous tubing drill mill operation can be met.Although above prior art is carried and caught Collect wording, but substantially either not the least concerned from goal of the invention, technical scheme, effective etc. with the application.

Utility model content

The purpose of this utility model is that providing underground foreign matter traps instrument, and the instrument is used for prevention and root in oil exploitation Control well of being lain caused by foreign matter.Evade completion using completion tail pipe increase screen casing and plug control, can only achieve prevention purpose, reach Less than the effect of radical cure, the problems such as oil well production cycle is short, and labor strength is big, and operation maintenance cost is high.

In order to reach above-mentioned purpose, the utility model employs following technical scheme, underground foreign matter trapping instrument, including mistake Screen pipe, in addition to sedimentation trapping cylinder, the sedimentation trap jacket casing outside filter sieve tube and form annular space, institute between the two State the inlet opening that radial direction is opened up on sedimentation trapping cylinder.

The inlet opening uniform three with height, a diameter of Φ 25mm, it is uniform in 120 °.

Sedimentation trapping cylinder external diameter Φ 88.9mm, internal diameter the Φ 76mm, high 2000mm, upper/lower terminal open up internal thread.

The sedimentation trapping cylinder upper end connection reducer union.

The filter sieve tube generally round seamless steel pipe is processed, external diameter Φ 45mm, interior through Φ 40mm, length 1900mm, The sieve diameter Φ 5mm that filter sieve tube opens up.

The filter sieve tube upper end connects reducer union, and lower end then connects interior pipe plug.

The sieve aperture of the filter sieve tube highest order will be less than inlet opening.

The upper surface 300mm of the inlet opening at least distance sedimentation trapping cylinder, the sieve aperture of the filter sieve tube highest order is extremely The upper surface 600mm of few distance sedimentation trapping cylinder.

Compared to prior art, the utility model has the advantages that：

It is the tool processes, assembling, easy to operate, by the difference in height of feed pathway, realize to the preventing of underground foreign matter, drag for control System, radical cure effect are good.Evade in original screen casing+plug Completion Operations, the special purpose that can not be fished for can only have been prevented, thoroughly Eliminate the harm of foreign matter circulating effect.The use of instrument effectively reduces time well rate caused by foreign materials away.Trapping is dragged for by anti- Integrated tool is connected on completion tail pipe, and foreign matter enters trapping cylinder with liquid by gaging hole in well in production process, is blocked Outside filter sieve tube, because feed pathway has difference in height between inner and outer pipes, foreign matter is gradually deposited between outer barrel and screen casing.Under The foreign matter trapped is removed totally during subjob, so as to reach the anti-purpose for dragging for radical cure.The instrument is convenient to be operated, effectively Lain caused by reducing foreign matter well rate, saved operating cost, extended the well operations cycle, improve construction quality.Instrument is fitted For all oil wells.Using and promotional value it is high.

Brief description of the drawings

Fig. 1 is the structural representation that the utility model underground foreign matter traps instrument

Fig. 2 is Fig. 1 cross-sectional view.

In figure：1st, sedimentation trapping cylinder；2nd, filter sieve tube；3rd, inlet opening；4th, sieve aperture.

Embodiment

Relevant detailed description of the present utility model and technology contents, coordinate brief description of the drawings as follows, but accompanying drawing is only to refer to With purposes of discussion, not it is used for being any limitation as the utility model.

As shown in Figure 1-2, underground foreign matter trapping instrument, including filter sieve tube 2, sedimentation trapping cylinder 1, the sedimentation trapping cylinder It is enclosed on outside filter sieve tube and forms annular space between the two, the inlet opening 3 of radial direction is opened up on the sedimentation trapping cylinder.It is described enter Fluid apertures uniform three with height, a diameter of Φ 25mm, it is uniform in 120 °.

Sedimentation trapping cylinder external diameter Φ 88.9mm, internal diameter the Φ 76mm, high 2000mm, upper/lower terminal open up internal thread.Institute State the connection reducer union 5 of sedimentation trapping cylinder upper end.

The filter sieve tube generally round seamless steel pipe is processed, external diameter Φ 45mm, interior through Φ 40mm, length 1900mm, The sieve diameter Φ 5mm that filter sieve tube opens up.The filter sieve tube upper end connects reducer union 5, and lower end then connects interior pipe plug 6.

The sieve aperture of the filter sieve tube highest order will be less than inlet opening.The inlet opening at least distance sedimentation traps the upper of cylinder End face 300mm, the upper surface 600mm of the sieve aperture at least distance sedimentation trapping cylinder of the filter sieve tube highest order.

Sedimentation trapping cylinder：External diameter Φ 88.9mm, internal diameter Φ 76mm, high 2000mm, upper/lower terminal are 31/2TBG internal threads, Inlet opening is strip hole, wide 25mm × long 150mm × 3, the 120 degree of uniform inlet openings in the whole body, with cylinder upper end orientation distance 300mm.Upper end is processed into disposed thread and is easy to union tail, while does not increase the external diameter of tubing string, reduces the generation of lock of tool drilling； Inlet opening is located at 300mm below cylinder top, this makes it possible to form feed liquor difference in height between filter sieve tube, is advantageous to pair The trapping of " foreign matter "；Bottom plug connection, which is easy to remove, clears up；Material is processed using Φ 88.9mm oil pipes, reusable, Reduce processing cost.

Filter sieve tube：Generally round seamless steel pipe is processed, and external diameter Φ 45mm are interior through Φ 40mm, length 1900mm.Pipe shaft It is processed into Φ 5mm sieve apertures.Become buckle joint lower end Φ 89mm, be connected with sedimentation trapping cylinder, upper end internal thread is 27/8TBG and tail pipe Connection.Bottom Φ 40mm connection pipe plugs, feed liquor screen casing are easy to liquid to turn to apart from top 600mm.Feed liquor screen casing aperture can have The foreign matter that blocking diameter is less than 5mm is imitated, prevention effect is good；There is 300mm difference in height between interior screen casing and trapping cylinder, foreign matter enters Caught after trapping cylinder by turning to sedimentation realization；It is reusable after screen casing cleaning, reduce cost；It is screw thread between each part Active link, removing foreign matter easy to disassemble.

The entirety that sedimentation trapping cylinder, filter sieve tube are assembled into.Instrument produced in use, being connected on completion tail pipe Foreign matter enters trapping cylinder with liquid by gaging hole in well in journey, is blocked in outside filter sieve tube, because feed liquor leads between inner and outer pipes There is difference in height in road, foreign matter is gradually deposited between outer barrel and screen casing.The foreign matter trapped is removed during lower subjob, from And reach anti-, drag for radical cure purpose.

Preferred embodiment of the present utility model is the foregoing is only, is not used to limit the scope of the claims of the present utility model, its He uses the equivalence changes of the utility model patent spirit, all should all belong to the scope of the claims of the present utility model.

Claims (8)

1. underground foreign matter traps instrument, including filter sieve tube, it is characterised in that also includes sedimentation trapping cylinder, the sedimentation trapping Jacket casing is outside filter sieve tube and forms annular space between the two, and the inlet opening of radial direction is opened up on the sedimentation trapping cylinder.

2. underground foreign matter according to claim 1 traps instrument, it is characterised in that the inlet opening is the same as height uniform three Individual, a diameter of Φ 25mm are uniform in 120 °.

3. underground foreign matter according to claim 1 or 2 traps instrument, it is characterised in that the sedimentation trapping cylinder external diameter Φ 88.9mm, internal diameter Φ 76mm, high 2000mm, upper/lower terminal open up internal thread.

4. underground foreign matter according to claim 3 traps instrument, it is characterised in that the sedimentation trapping cylinder upper end connection becomes Drive connector.

5. underground foreign matter according to claim 1 or 2 traps instrument, it is characterised in that the filter sieve tube is generally round Shape seamless steel pipe is processed, and external diameter Φ 45mm are interior through Φ 40mm, length 1900mm, the sieve diameter Φ 5mm that filter sieve tube opens up.

6. underground foreign matter according to claim 5 traps instrument, it is characterised in that the filter sieve tube upper end connects reducing Joint, lower end then connect interior pipe plug.

7. underground foreign matter according to claim 5 traps instrument, it is characterised in that the sieve aperture of the filter sieve tube highest order To be less than inlet opening.

8. underground foreign matter according to claim 7 traps instrument, it is characterised in that the inlet opening at least distance sedimentation is caught Collect the upper surface 300mm of cylinder, the upper surface 600mm of the sieve aperture at least distance sedimentation trapping cylinder of the filter sieve tube highest order.