CN203175448U - Rotary jet flow negative pressure suction composite blockage removal device - Google Patents

Rotary jet flow negative pressure suction composite blockage removal device Download PDF

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Publication number
CN203175448U
CN203175448U CN 201320033410 CN201320033410U CN203175448U CN 203175448 U CN203175448 U CN 203175448U CN 201320033410 CN201320033410 CN 201320033410 CN 201320033410 U CN201320033410 U CN 201320033410U CN 203175448 U CN203175448 U CN 203175448U
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China
Prior art keywords
nozzle
negative pressure
jet
pipe
interior pipe
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CN 201320033410
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Chinese (zh)
Inventor
匡韶华
王宝权
张建军
柳燕丽
石磊
于丽宏
佟姗姗
张群
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Petrochina Co Ltd
China Petroleum and Natural Gas Co Ltd
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China Petroleum and Natural Gas Co Ltd
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Abstract

The utility model discloses a rotary jet flow negative pressure suction composite blockage removal device. Blockages loose and fall off in a high-pressure jet flow mode; a connection pipe (12) is arranged between an outer pipe (8) and an inner pipe (7) of a water force jet pump (1), a jet mouth (9) jetting upward is arranged inside the inner pipe (7), a jet port (91) of the jet mouth (9) corresponds to the connection pipe (12) in position, an adapter bonnet (21) is sleeved above the jet mouth (9), and therefore the water force jet pump (1) has the negative pressure suction effect, the blockages can be discharged completely, and the phenomenon that fluid and the blockages enter oil layers is effectively reduced. In addition, a leather cup packer is arranged between rotary jet flow and negative pressure suction, a circulation flowing channel passing through annular sand layers is built, and the blockages in the annular sand layers can be discharged more easily.

Description

A kind of rotating jet negative pressure suction composite blockage relieving device
Technical field
The utility model relates to the de-plugging of well technical field, particularly a kind of rotating jet negative pressure suction composite blockage relieving device that uses in de-plugging of well.
Background technology
In the process of oil exploitation, sand control is the indispensable link in the oil-gas reservoir exploitation of shaking out, and screen sand control is the most frequently used a kind of sand control method in current oil field.Oil well production is after a period of time, fine sand, shale and asphalt colloid in the output liquid of stratum, and residual obstructions such as solid phase particles can stop up screen casing and the outer annular space layer of sand of screen casing in the drilling fluid, cause oil well to stop up, output seriously descends.
Existing sand washing plug-removing device can only wash the sand grains of screen casing inside, and can not wash the obstruction in screen casing and the outer annular space layer of sand of screen casing.Chinese patent CN2226140Y, open May 1 1996 date, a kind of " plug-removing device is cleaned in the water jet down-hole " disclosed, this device is by strainer, centralizer, damping circulator and swivel nozzle are formed, this device can produce high-pressure water jet and directly wash annular space layer of sand outside screen casing and the screen casing in the down-hole, produce higher-order of oscillation hydrodynamic wave (H wave) simultaneously, cavitation noise, be that ultrasonic wave carries out synthesis and understands stifled, make fine sand and shale in the outer annular space layer of sand of screen casing and screen casing loosening, come off, discharge, realize the purpose of de-plugging, this plug-removing device stops up screen casing and the outer annular space layer of sand of screen casing, has plugging removal effect preferably.But also there is certain limitation in this method: high-pressure water jet pushes oil reservoir with fluid and obstruction, and oil reservoir is damaged; And the obstruction in the outer annular space layer of sand of screen casing can not fully be discharged, and influences final plugging removal effect.
The utility model content
In order to solve the technical problem that plug-removing device can not fully be discharged obstruction in the prior art, the utility model provides a kind of rotating jet negative pressure suction composite blockage relieving device, and this rotating jet negative pressure suction composite blockage relieving device at first adopts the high-pressure water jet mode to make obstruction become flexible, come off; And then the negative pressure swabbing action of employing hydraulic jet pump, obstruction is fully discharged, not only can effectively reduce fluid and obstruction and invade oil reservoir, and plugging removal effect is good, effectively lasting.
The utility model for the technical scheme that solves its technical problem employing is: a kind of rotating jet negative pressure suction composite blockage relieving device, described rotating jet negative pressure suction composite blockage relieving device comprises the inner hydraulic jet pump that is communicated with successively from the top down, cup packer, the down-hole strainer, erection device, the damping circulator and the rotary nozzle that are used for control rotary nozzle rotary speed, hydraulic jet pump comprises outer tube and is sheathed on the interior interior pipe of outer tube, form annular space between outer tube and the interior pipe, be provided with the tube connector of and outside pipe inner for pipe in being communicated with between outer tube and the interior pipe, the lower end of outer tube is connected with the interior seal of tube, the sidewall of interior pipe is provided with the inlet opening that is communicated with annular space and interior pipe inside, inlet opening is between the lower end of tube connector and outer tube, the inside of interior pipe is provided with for the jet blower that will upwards spray from the liquid that inlet opening enters, rotary nozzle can will enter and flow through successively cup packer from inlet opening, the down-hole strainer, erection device, the described liquid ejection of damping circulator and rotary nozzle, the position of the jet of jet blower is corresponding with the position of tube connector, above jet blower, the inside of interior pipe also is socketed with the reducer pipe of tubular, the outer wall of reducer pipe is connected with the inner wall sealing of interior pipe, reducer pipe comprises that constant trunnion section and the internal diameter of internal diameter that connects successively from bottom to top becomes big diffuser gradually, and the lower end of interior pipe is connected with cup packer.
The lower end of trunnion section is provided with interior chamfering.
Rotary nozzle comprises first group of nozzle and the second group of nozzle that is positioned at same horizontal plane, first group of nozzle comprises that injection direction is along shower nozzle a plurality of straight nozzles radially, and second group of nozzle comprises a plurality of oblique nozzle that the injection direction of injection direction and described straight nozzle is obliquely installed and rotary nozzle is rotated.
Rotary nozzle also comprises the 3rd group of nozzle that is arranged on first group of nozzle top, and the 3rd group of nozzle comprises that injection direction is towards a plurality of nozzles of oblique upper.
Erection device is bow type centralizer.
The interior pipe of hydraulic jet pump and down-hole strainer by bushing pipe be communicated with, two cup packer sealing shrouds are connected to outside the bushing pipe.
The beneficial effects of the utility model are: 1, to understand stifled ability strong for the synthesis of rotating jet, makes that obstruction is easier to be become flexible, come off; 2, the negative pressure swabbing action of hydraulic jet pump can effectively reduce fluid and obstruction and invade oil reservoir; 3, between the suction of rotating jet and negative pressure cup packer is installed, has been set up the passage that circulates through the annular space layer of sand, make the easier discharge of obstruction in the annular space layer of sand.
Description of drawings
Below in conjunction with accompanying drawing rotating jet negative pressure suction composite blockage relieving device described in the utility model is described in further detail.
Fig. 1 is the structural representation of rotating jet negative pressure suction composite blockage relieving device described in the utility model.
Fig. 2 is the use view of rotating jet negative pressure suction composite blockage relieving device described in the utility model.
Fig. 3 is the cross-sectional schematic of A-A direction among Fig. 1.
Wherein 1. hydraulic jet pumps, 2. cup packer, 3. down-hole strainer, 4. erection device, 5. damping circulator, 6. rotary nozzle, 7. in pipe, 8. outer tube, 9. jet blower, 91. jets, 10. trunnion section, 11. diffusers, 12. tube connector, 13. inlet openings, 15. first groups of nozzles, 16. second groups of nozzles, 17. the 3rd group of nozzle, 18. screen casings, 19. boreholes wall, 20. annular spaces, 21. reducer pipe, 22. bushing pipes, 23. hybrid chambers.
The specific embodiment
Below in conjunction with accompanying drawing rotating jet negative pressure suction composite blockage relieving device described in the utility model is described in detail.A kind of rotating jet negative pressure suction composite blockage relieving device, described rotating jet negative pressure suction composite blockage relieving device comprises the inner hydraulic jet pump 1 that is communicated with successively from the top down, cup packer 2, down-hole strainer 3, erection device 4, the damping circulator 5 and the rotary nozzle 6 that are used for control rotary nozzle 6 rotary speeies, hydraulic jet pump 1 comprises outer tube 8 and the interior pipe 7 that is sheathed in the outer tube 8, form annular space 20 between outer tube 8 and the interior pipe 7, be provided with the tube connector 12 for 7 inside of pipe in being communicated with and outer tube 8 outsides between outer tube 8 and the interior pipe 7, the lower end of outer tube 8 and interior pipe 7 are tightly connected, the sidewall of interior pipe 7 is provided with the inlet opening 13 that is communicated with annular space 20 and interior pipe 7 inside, inlet opening 13 is between the lower end of tube connector 12 and outer tube 8, the inside of interior pipe 7 is provided with for the jet blower 9 that will upwards spray from the liquid that inlet opening 13 enters, rotary nozzle 6 can be with the cup packer 2 that enters and flow through successively from inlet opening 13, down-hole strainer 3, erection device 4, the described liquid ejection of damping circulator 5 and rotary nozzle 6, the position of the jet 91 of jet blower 9 is corresponding with the position of tube connector 12, above jet blower 9, the inside of interior pipe 7 also is socketed with the reducer pipe 21 of tubular, the outer wall of reducer pipe 21 is connected with the inner wall sealing of interior pipe 7, reducer pipe 21 comprises that constant trunnion section 10 and the internal diameter of internal diameter that connects successively from bottom to top becomes big diffuser 11 gradually, the lower end of interior pipe 7 is connected with cup packer 2, as Fig. 1, shown in Figure 2.
The surface pump group is connected by the top of concentric double pipe sand washing tubing string with rotating jet negative pressure suction composite blockage relieving device described in the utility model, cup packer 2 is used for hydraulic jet pump 1 and rotary nozzle 6 are separated, thereby the fluid that assurance sprays from rotary nozzle 6 top nozzles enters the annular space layer of sand outside the screen casing 18, from the annular space layer of sand, upwards cross cup packer 2 again, return in the screen casing, discharge from hydraulic jet pump 1 at last.Bushing pipe 22 lower ends are connected with down-hole strainer 3, and down-hole strainer 3 is used for preventing the pollutant plug nozzle.The lower end of down-hole strainer 3 is connected with another section bushing pipe again, and this bushing pipe outer wall is installed bow type centralizer, is used for guaranteeing that rotary nozzle 6 is placed in the middle in screen casing 18.Liner at its lower end is connected with damping circulator 5, and damping circulator 5 is used for controlling the rotary speed of rotary nozzle 6, and damping circulator 5 is connected with rotary nozzle 6.
The blockages relieving fluid of surface pump group pumping enters from the annular space 20 that forms between the outer tube 8 of hydraulic jet pump 1 and the interior pipe 7, shown in arrow C among Fig. 2, this blockages relieving fluid cross tube connector 12 enter through inlet openings 13 in pipe 7.Wherein a part of blockages relieving fluid up flows then, shown in arrow B among Fig. 2, the trunnion section 10 and the diffuser 11 that enter reducer pipe 21 after this part blockages relieving fluid sprays through jet blower 9 successively continue upwards, form negative pressure in the hybrid chamber 23 that the fluid of jet blower 9 ejections forms between jet 91 and trunnion section 10, this negative pressure can produce suction force; Another part blockages relieving fluid flows downward, shown in arrow D among Fig. 2, this part blockages relieving fluid can flow through successively bushing pipe 22, down-hole strainer 3, erection device 4, damping circulator 5 in the cup packer 2 enter rotary nozzle 6 and at last by the nozzle ejection of rotary nozzle 6.Blockages relieving fluid after the ejection impact screen casing 18 and enter screen casing 18 and the borehole wall 19 between the annular space layer of sand, shown in arrow A among Fig. 2, obstruction in the outer annular space layer of sand of screen casing 18 and screen casing is loosening under the impact of blockages relieving fluid, come off, obstruction is along with fluid upwards flows in the annular space layer of sand, in hydraulic jet pump 1 under the swabbing action of hybrid chamber 23, the fluid that is mixed with obstruction enters in the screen casing 18 outside screen casing 18, pass through tube connector 12 again, enter in the interior pipe 7 of hydraulic jet pump 1, continue then upwards to flow and discharge from the top of interior pipe, thereby realized that rotating jet comes de-plugging with the mode that the negative pressure suction combines.
Better form negative pressure in the hybrid chamber 23 in order to make, the lower end of preferred trunnion section 11 is provided with interior chamfering.
Rotary nozzle 6 comprises first group of nozzle 15 and the second group of nozzle 16 that is positioned at same horizontal plane, first group of nozzle 15 comprises that injection direction is along shower nozzle 6 a plurality of straight nozzles radially, and second group of nozzle 16 comprises a plurality of oblique nozzle that the injection direction of injection direction and described straight nozzle is obliquely installed and rotary nozzle 6 is rotated.Rotary nozzle 6 comprises that also 17, the three groups of nozzles 17 of the 3rd group of nozzle that are arranged on first group of nozzle 15 top comprise that injection direction is towards a plurality of nozzles of oblique upper, as shown in figures 1 and 3.
The 3rd group of nozzle 17 is used for making fluid to slant the annular space layer of sand that enters outside the screen casing 18, and under the swabbing action of hydraulic jet pump 1, the annular space layer of sand outside screen casing 18 is set up one and circulated passage, is mainly used to clean the obstruction in the empty layer of sand of screen casing outer shroud; The fluid radial impact screen casing 18 of first group of nozzle 15 ejection is mainly used to remove the obstruction in the screen casing; Second group of nozzle 16 is with respect to the 15 oblique settings of first group of nozzle, make fluid give 6 one tangential forces of rotary nozzle from rotary nozzle 6 ejection backs, drive rotary nozzle 6 and under fluid counterforce, rotate, be mainly used to provide rotary power, realize the comprehensive injection to screen casing 18.
Erection device 4 is bow type centralizer, and bow type centralizer can be regulated according to screen casing internal diameter size, and adaptive capacity is strong.In addition, the interior pipe 7 of hydraulic jet pump 1 and down-hole strainer 3 by bushing pipe 22 be communicated with, two cup packer 2 sealing shrouds are connected to outside the bushing pipe 22.
The using method of rotating jet negative pressure suction composite blockage relieving device described in the utility model is: press order assembling rotating jet negative pressure suction composite blockage relieving device from the top down among Fig. 1; The top of the suction of rotating jet negative pressure as shown in Figure 1 composite blockage relieving device is linked to each other with concentric double pipe sand washing tubing string; Rotating jet negative pressure suction composite blockage relieving device is lowered to the oil reservoirs of horizontal well section top of having handled through sand washing; The surface pump group is injected blockages relieving fluid from concentric double pipe sand washing tubing string outer tube; Repeatedly transfer back and forth, the upper lifting pipe post, a processing layer is carried out repeatedly de-plugging, do not contain obstruction up to the liquid that returns out; Connect oil pipe and enter next processing layer, repeat the de-plugging operation; Successively whole oil layer section is carried out de-plugging from top to bottom.This rotating jet negative pressure suction composite blockage relieving device can application and the de-plugging of horizontal well or straight well, has wide range of applications.
The above; only be specific embodiment of the utility model, can not limit the scope that utility model is implemented with it, so the displacement of its equivalent assemblies; or according to equivalent variations and modification that the utility model scope of patent protection is done, all should still belong to the category that this patent is contained.

Claims (6)

1. a rotating jet negative pressure is aspirated the composite blockage relieving device, it is characterized in that: described rotating jet negative pressure suction composite blockage relieving device comprises the inner hydraulic jet pump (1) that is communicated with successively from the top down, cup packer (2), down-hole strainer (3), erection device (4), the damping circulator (5) and the rotary nozzle (6) that are used for control rotary nozzle (6) rotary speed, hydraulic jet pump (1) comprises outer tube (8) and is sheathed on the interior interior pipe (7) of outer tube (8), form annular space (20) between outer tube (8) and the interior pipe (7), be provided with the tube connector (12) for pipe (7) is inner and outer tube (8) is outside in being communicated with between outer tube (8) and the interior pipe (7), the lower end of outer tube (8) and interior pipe (7) are tightly connected, the sidewall of interior pipe (7) is provided with and is communicated with annular space (20) inlet opening (13) inner with interior pipe (7), inlet opening (13) is positioned between the lower end of tube connector (12) and outer tube (8), the inside of interior pipe (7) is provided with for the jet blower (9) that will upwards spray from the liquid that inlet opening (13) enter, rotary nozzle (6) can be with the cup packer (2) that enters and flow through successively from inlet opening (13), down-hole strainer (3), erection device (4), the described liquid ejection of damping circulator (5) and rotary nozzle (6), the position of the jet (91) of jet blower (9) is corresponding with the position of tube connector (12), top in jet blower (9), the inside of interior pipe (7) also is socketed with the reducer pipe (21) of tubular, the outer wall of reducer pipe (21) is connected with the inner wall sealing of interior pipe (7), reducer pipe (21) comprises that constant trunnion section (10) and the internal diameter of internal diameter that connects successively from bottom to top becomes big diffuser (11) gradually, and the lower end of interior pipe (7) is connected with cup packer (2).
2. rotating jet negative pressure according to claim 1 is aspirated the composite blockage relieving device, and it is characterized in that: the lower end of trunnion section (10) is provided with interior chamfering.
3. rotating jet negative pressure according to claim 1 is aspirated the composite blockage relieving device, it is characterized in that: rotary nozzle (6) comprises first group of nozzle (15) and the second group of nozzle (16) that is positioned at same horizontal plane, first group of nozzle (15) comprises that injection direction is along shower nozzle (6) a plurality of straight nozzles radially, and second group of nozzle (16) comprises a plurality of oblique nozzle that the injection direction of injection direction and described straight nozzle is obliquely installed and rotary nozzle (6) is rotated.
4. rotating jet negative pressure according to claim 3 is aspirated the composite blockage relieving device, it is characterized in that: rotary nozzle (6) also comprises the 3rd group of nozzle (17) that is arranged on first group of nozzle (15) top, and the 3rd group of nozzle (17) comprises that injection direction is towards a plurality of nozzles of oblique upper.
5. rotating jet negative pressure according to claim 1 is aspirated the composite blockage relieving device, and it is characterized in that: erection device (4) is bow type centralizer.
6. rotating jet negative pressure according to claim 1 suction composite blockage relieving device is characterized in that: the interior pipe (7) of hydraulic jet pump (1) and down-hole strainer (3) by bushing pipe (22) be communicated with, two cup packers (2) sealing shroud is connected to outside the bushing pipe (22).
CN 201320033410 2013-01-22 2013-01-22 Rotary jet flow negative pressure suction composite blockage removal device Active CN203175448U (en)

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103696720A (en) * 2013-12-26 2014-04-02 中国海洋石油总公司 Composite unblocking method
CN108266140A (en) * 2018-01-15 2018-07-10 中国石油天然气股份有限公司 Suction-type is vortexed well-washing device
CN109132317A (en) * 2017-06-27 2019-01-04 中国石油天然气集团公司 A kind of sand-removal device for underground water seal pit hole storage cavern sleeve
CN110529063A (en) * 2019-09-09 2019-12-03 盘锦展鸿科工贸发展有限公司 A kind of vibrator and vibration negative-pressure de-plugging tubing string

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103696720A (en) * 2013-12-26 2014-04-02 中国海洋石油总公司 Composite unblocking method
CN103696720B (en) * 2013-12-26 2016-05-18 中国海洋石油总公司 A kind of composite blockage relieving method
CN109132317A (en) * 2017-06-27 2019-01-04 中国石油天然气集团公司 A kind of sand-removal device for underground water seal pit hole storage cavern sleeve
CN108266140A (en) * 2018-01-15 2018-07-10 中国石油天然气股份有限公司 Suction-type is vortexed well-washing device
CN108266140B (en) * 2018-01-15 2020-09-18 中国石油天然气股份有限公司 Suction type vortex well flushing device
CN110529063A (en) * 2019-09-09 2019-12-03 盘锦展鸿科工贸发展有限公司 A kind of vibrator and vibration negative-pressure de-plugging tubing string

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