CN2656616Y - High pressure abrasive jet flow seam cutting equipment in oil well - Google Patents

Abstract

The utility model relates to a high pressure abrasive jet slotting device, which mainly comprises a nozzle component and a repositor. moving device components are provided; wherein, an o-type packing ring 19-2 of size five and six is positioned at contact side between a upper joint 39 and a hollow piston rod 43; lower outside of the upper joint 39 is connected with a moving device barrel 37 by a screw; a projection 19 and the hollow piston rod 43 are welded to be an integrality with a upper piston cover 38 arranged on the hollow piston rod; a relief valve 36 is fixed in middle of a upper piston 35 by a screw; a latch nut and a reducer union 4 connected with a return spring lever 26 is jointed with lower end of the hollow piston rod 43; low end of the moving device barrel is connected with a lower joint 34 by a screw and the lower joint 34 is connected with a repositor barrel 31 by a screw. The utility model is suitable for oil well slotting in oil field and thin-layer and ultrathin-layer exploiting oil coat, which can slot through double layer sleeves and double layer well fixation band and penetrate compacted area and polluted area around the well, increasing oil yield.

Description

Oil well mesohigh abradant jet slot equipment

Technical field

The utility model relates to a kind of plant equipment of oil well, particularly a kind of oil well mesohigh abradant jet slot equipment that makes oil well production increasing, augmented injection.

Technical background

At present, all there are this abradant jet slot equipment in Russia and China, but, this equipment, redesign and improve,, all beat the minor diameter oil well in popularization because China is current in order to reduce the well-digging cost, simultaneously, original major diameter oil well is owing under the geostatic stress effect, produce dislocation or bad break, after finishing, must in crude oil well, be lowered to minor diameter tubing,, so just produce bilayer sleeve so that resume production, double-deck well cementation band, want that finishing perforation with existing equipment and technology recovers the oil, just become very difficult, even not possible, in addition, China's thin layer and superthin layer oil reservoir are a lot, be difficult to exploitation, its reason is exactly to be difficult to the location with former perforating bullet technology perforation, and former perforating bullet technology is to penetrate the hole of 12～30 Φ 10mm on every meter height, and thin and ultra-thin oil reservoir is all below 0.6mm, so that former perforating bullet technology realizes is difficult.

Summary of the invention

The utility model provides a kind of oil well medium-small diameter wellhole oil well that is suitable in order to overcome and to solve above-mentioned technical deficiency, the oil well mesohigh abradant jet slot equipment of major diameter oil well through repairing and thin layer, superthin layer exploitation oil reservoir.

The technical scheme that its technical problem that solves the utility model adopts is: this equipment is made up of nozzle component and restorer parts, its key component is the shifter parts, include top connection, the top connection upper end is connected with pipe collar two with screw thread, with hollow piston bar contact side O RunddichtringO, upper gasket and Upper shaft sleeve are housed five, No. six, fix with hold-down nut, hold-down nut and top connection are with being threaded, and the outside, top connection lower end is connected with the shifter tube with screw thread; The one of projection and the weldering of hollow piston bar, upper piston lid is adorned in hollow piston bar upper end, the upper piston lid is adorned a upper piston with screw thread, y-type seal ring and No. three back-up rings are housed between upper piston and the shifter tube, fix an overflow valve with screw thread in the middle of the upper piston, two No. three O RunddichtringOs are housed on the valve body; Movably lower piston is equipped with in hollow piston bar lower end, lower piston is connected with the lower piston lid with screw thread, in the lower piston lid Lower shaft sleeve is housed, between Lower shaft sleeve and the lower piston lower gasket is housed, an O RunddichtringO and a back-up ring are equipped with locking nut on the lower end screw thread of hollow piston, the reducer union that is connected with the back-moving spring bar, the lower end of shifter tube is connected with screw thread with the restorer tube with the lower contact that has been threaded, lower contact.

The beneficial effects of the utility model are: the cutting oil well that is suitable for oilfield, thin layer, superthin layer exploitation oil reservoir uses, and accurate positioning can be cut bilayer sleeve, double-deck well cementation band, penetrates well week compaction band and contaminated zone, improves oil production rate.

Description of drawings

Specify with embodiment below in conjunction with accompanying drawing.

Fig. 1 shows oil well mesohigh abradant jet slot equipment general assembly drawing.

Among the figure, the 1-steel ball; The 2-reducer union; 3-adjusts nut; 4-reducer union one; The 5-spring; The 6-intermediate tray; 7-reducer union two; The 8-locking nut; The 9-Lower shaft sleeve; The 10-lower gasket; O RunddichtringO of 11-; Back-up ring of 12-; No. two O types of 13-back-up ring; No. two back-up rings of 14-; The 15-Y RunddichtringO; No. two back-up rings of 16-; No. three O RunddichtringOs of 17-; No. four O RunddichtringOs of 18-; The 19-projection; No. five O RunddichtringOs of 19-1-; No. six O RunddichtringOs of 19-2-; The 20-upper gasket; The 21-Upper shaft sleeve; 22-takes over; The 23-sprayer body; The 24-nozzle; The 25-nozzle carrier; The 26-guide peg; The 27-positioning tube; Pallet under the 28-; 29-oil well instrumentation tubes; The 30-pipe collar; 31-restorer tube; 32-lower piston lid; The 33-lower piston; The 34-lower contact; The 35-upper piston; The 36-overflow valve; 37-shifter tube; 38-upper piston lid; The 39-top connection; No. seven O RunddichtringOs of 40-; The 41-hold-down nut; The 42-pipe collar; 43-hollow piston bar; 44-pipe collar one; The 45-top tray

The specific embodiment

With reference to accompanying drawing 1, one mainly by the shifter parts, the oil well mesohigh abradant jet slot equipment that restorer parts and nozzle component are formed, be threaded with oil well instrumentation tubes 29 and joint 22 with pipe collar 1, top connection 39 upper ends of joint 22 lower ends and moving-member are threaded with pipe collar 2 42, top connection 39 upper ends contact the inboard O RunddichtringO 19-2 are housed No. six with piston rod 43, upper gasket 20 and Upper shaft sleeve 21, fixing with hold-down nut 41, hold-down nut 41 is threaded with top connection 39, the outside, top connection 39 lower ends is connected with shifter tube 37 with screw thread, projection 19 of weldering on the hollow piston bar 43, on O RunddichtringO 18 is housed No. four, upper piston lid 38 is housed on the hollow piston bar 43, and adorn a upper piston 35 with screw thread, y-type seal ring 15 and No. three back-up rings 16 are housed between upper piston 35 and the shifter tube 37, fix an overflow valve 36 with screw thread in the middle of the upper piston 35, No. three O RunddichtringOs 17 are housed on the valve body, a movably lower piston 33 is adorned in hollow piston bar 43 lower ends, outside tight fit is equipped with lower piston lid 32, lower piston lid 32 is equipped with Lower shaft sleeve 9, between Lower shaft sleeve 9 and the lower piston 33 lower gasket 10 is housed, an O RunddichtringO 11 and a back-up ring 12, the displacement joint 4 that locking nut 8 is housed and is threaded on the hollow piston bar 43 lower end screw threads with back-moving spring bar 26, the lower end of shifter tube 37 is threaded with lower contact 34, lower contact 34 other ends are threaded with restorer tube 31, on, lower piston 38, the be not stressed oil of temperature effect of viscosity is housed between 33.

Restorer tube 31 upper ends of restorer parts are connected with the lower contact 34 of moving-member with screw thread, reducer union 27 upper ends are threaded with piston rod 43 lower ends, reducer union 27 lower ends are threaded with pipe collar 30 with guide pipe 26 upper ends, spring 5 is enclosed within on the guide pipe 26, be equipped with at spring 5 two ends, following pallet 45,28, two intermediate tray 6 are equipped with in the centre, the precompression of spring 5 is to use the decrement of spring 5 to produce, following pallet 28 is by reducer union 4 location, positioning tube 27 upper ends are connected with the tube 31 that resets with screw thread, reducer union 4 upper ends are connected with guide pipe 26 with screw thread, the lower end is connected with reducer union one 2 upper ends with screw thread, and reducer union 4 outsides are equipped with and are adjusted nut 3.

The sprayer body 23 usefulness screw threads of nozzle component are connected with reducer union 1, sprayer body 23 intermediate radial symmetries fix two nozzle carriers 25, be fixed with nozzle 24 in nozzle carrier 25 holes with high-abrasive material system, steel ball 1 is equipped with in sprayer body 23 endoporus head end activities, it act as one way valve, and the sealing shower nozzle makes the water under high pressure that contains sand form two bundle high-pressure sprays by two nozzles on the shower nozzle 24.Nozzle 24 aperture 3.5mm～6mm, the shower nozzle bottom is made as the inclined-plane, is during for anti-flushing well, and current can back down steel ball 1 swimmingly the access arrangement from the inclined-plane.

The operating principle of this slot equipment is, slot equipment is threaded onto on the oil well instrumentation tubes 29 with pipe collar one 44 usefulness, sends into the predetermined slot position of oil well.When the hollow piston rod 22 of the High-Pressure Water that contains sand by oil well instrumentation tubes 29 access arrangements, hollow guide pipe 26 is to sprayer body 23 endoporus of shower nozzle, because steel ball 1 seals sprayer body 23 stomidiums, the water under high pressure that contains sand forms two bundle or multi beam high-pressure sprays by nozzle 24, sprayer body 23 moves down under effect of water pressure simultaneously, compression resetting means medi-spring 5.When slot finishes, pump pressure is reduced, compressed spring 5 elongations restore to the original state in the restorer, and sprayer body 23 also resets thereupon, by promoting oil well instrumentation tubes 29 sprayer body 23 is moved to next precalculated position, carries out second pair of slot, until all having cut.The slot end of job reduces to zero with pressure, and anti-flushing well is till seeing clear water.

The shifter structure is ditto described, in shifter tube 37, be equipped with, following two pistons 35,33, the be not stressed oil of temperature effect of viscosity is housed in the middle of two pistons, an overflow valve 36 fixedly is housed in the upper piston 35, when water under high pressure enters shower nozzle formation jet, moment, hollow piston bar 43 outwards moved, No. four O RunddichtringOs 18 on hollow piston bar 43 projections 19 are shut the gap of piston rod 43 end faces, and force upper piston 35 to move downward, make oily pressurized in the middle of upper piston 35 and the lower piston 33, flow into upper piston 35 tops by overflow valve 36, the speed of overflow has just determined the translational speed of shower nozzle, promptly is slot speed.The speed of slot speed, be by the time of punching the oil well casing and the maximum slot degree of depth, in advance the back determines by overflow valve 36 is adjusted, moving of piston rod 43 also makes spring 6 be compressed simultaneously, and spring 6 is upheld when slot stops to reduce pump pressure, and piston rod 43 and shower nozzle set back, move on the piston rod 43, upper piston 35 also sets back, and the oil that overflows flows back to by the space of upper piston 35 in the chamber come, and that has realized that slot operation shower nozzle moves carries out automatically.

Claims (1)

1, a kind of oil well high-pressure abradant jet current slot equipment is made up of parts such as nozzle component and restorers, it is characterized in that the shifter parts, includes:

A, top connection (39), top connection (39) upper end is connected with pipe collar two (42) with screw thread, with hollow piston bar (43) contact side five, No. six O RunddichtringOs (19-2), upper gasket (20) and Upper shaft sleeve (21) are housed, fixing with hold-down nut (41), hold-down nut (41) and joint (39) are with being threaded, and the outside, top connection (39) lower end is connected with shifter tube (37) with screw thread;

B, projection (19) are one with hollow piston bar (43) weldering, hollow piston bar (43) is adorned upper piston lid (38), upper piston lid (38) is with the upper piston (35) that is threaded, y-type seal ring (15) and No. three back-up rings (16) are housed between upper piston (35) and the shifter tube (37), fix an overflow valve (36) with screw thread in the middle of the upper piston (35), two No. three O RunddichtringOs (17) are housed on the valve body; Lower piston (33) is connected with lower piston lid (32) with screw thread, Lower shaft sleeve (9) is equipped with in lower piston lid (32) lining, lower gasket (10), an O RunddichtringO (11) and a back-up ring (12) are housed between Lower shaft sleeve (9) and the lower piston (33), locking nut (8) and the reducer union (4) that is connected with back-moving spring bar (26) are housed on the lower end screw thread of hollow piston bar (43);

The lower end of c, shifter tube is with the lower contact that has been threaded (34), and lower contact (34) and restorer tube (31) are with being threaded.