CN115162980A - Low-pressure leakage-prone reservoir stratum negative pressure jet continuous sand washing device and method - Google Patents
Low-pressure leakage-prone reservoir stratum negative pressure jet continuous sand washing device and method Download PDFInfo
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- CN115162980A CN115162980A CN202210853517.XA CN202210853517A CN115162980A CN 115162980 A CN115162980 A CN 115162980A CN 202210853517 A CN202210853517 A CN 202210853517A CN 115162980 A CN115162980 A CN 115162980A
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- 239000004576 sand Substances 0.000 title claims abstract description 181
- 238000005406 washing Methods 0.000 title claims abstract description 111
- 238000000034 method Methods 0.000 title claims abstract description 22
- 239000012530 fluid Substances 0.000 claims abstract description 62
- 230000009471 action Effects 0.000 claims abstract description 6
- 239000007788 liquid Substances 0.000 claims description 16
- 238000009792 diffusion process Methods 0.000 claims description 11
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 11
- 238000002347 injection Methods 0.000 claims description 6
- 239000007924 injection Substances 0.000 claims description 6
- 230000008569 process Effects 0.000 claims description 6
- 230000009467 reduction Effects 0.000 claims description 6
- 238000004519 manufacturing process Methods 0.000 abstract description 10
- 239000000243 solution Substances 0.000 description 6
- 239000003129 oil well Substances 0.000 description 5
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000004140 cleaning Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B21/00—Methods or apparatus for flushing boreholes, e.g. by use of exhaust air from motor
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Abstract
The invention provides a low-pressure easily-leaked reservoir negative pressure jet continuous sand washing device and a method, and is characterized by comprising a shell and a sand washing assembly, wherein the shell is provided with a sand disturbing nozzle and a sand inlet; the ground high-pressure pump pumps power fluid from the double-wall drill pipe annulus, when the power fluid passes through the high-pressure cavity of the negative pressure jet continuous sand washing device, most of the fluid flows through the negative pressure jet nozzle and is upwards jetted at high speed to form a vacuum low-pressure area, the other small part of the fluid flows through the sand disturbing nozzle to impact and disturb a sand bed at the bottom of the well, and the mixed sand fluid at the bottom of the well flows into the inner pipe under the action of negative pressure suction and then returns out of the well mouth through the inner pipe. The invention has simple structure principle and high sand washing efficiency, can reduce the pressure of a bottom hole flow field during sand washing, and reduces the leakage of a low-pressure reservoir stratum which is easy to leak during sand washing operation and the pollution to a production stratum.
Description
Technical Field
The invention belongs to the technical field of oil well workover, relates to the technical field of oil well sand washing of oil wells of oil fields, and particularly relates to a low-pressure easily-leaked reservoir stratum negative pressure jet flow continuous sand washing device and method.
Background
The sand production in the oil and gas field development process is difficult to avoid, and although a plurality of sand control measures are adopted in the production process, the oil and gas well still has the sand production problem of different degrees in the actual production process. The sand production from the oil well erodes the oil pipe and the surface equipment, damages the equipment and brings great difficulty to the implementation and maintenance of the process, and more importantly, the sand production increases the fluid flow resistance, influences the recovery ratio of the oil and gas reservoir and reduces the yield of the oil and gas well, so the sand removal operation of the oil and gas well is necessary.
Hydraulic sand washing is a common method for recovering and maintaining the output of a sand outlet well, and compared with mechanical sand bailing, the hydraulic sand washing has the advantages of relative stability, thorough bottom cleaning, strong continuity, large sand washing amount and the like. However, for the sand washing of the leakage well of the low-pressure reservoir stratum which is easy to leak, the conventional hydraulic sand washing process is difficult to be successfully applied, on one hand, the conventional hydraulic sand washing is difficult to establish circulation in the low-pressure leakage well, and the bottom pressure is often greater than the stratum pressure when the power fluid impacts a bottom sand bed, so that a large amount of sand mixing fluid leaks into an oil production layer, the stratum is polluted, and the yield of the oil well is easy to further reduce; on the other hand, the axis of the conventional hydraulic sand washing operation pipe column is not coincident with the axis of the well hole, the mixed sand liquid flows in the eccentric annulus, and sand is easily accumulated at the bottom of the well again, so that sand is blocked.
The sand washing method of the leakage well of the low-pressure easily-leaked reservoir layer is as China patent CN206267816U continuous negative pressure sand washing device and system thereof, the sand washing liquid is ejected from the nozzle of the jet pump at high speed and enters the inner pipe cavity of the sand washing pipe, at the moment, negative pressure is formed at the lower part of the inner pipe cavity of the sand washing pipe, under the action of the negative pressure, sand grains at the bottom of the well or liquid with the sand grains are sucked into the inner pipe cavity of the sand washing pipe from the sand washing hole of the sand washing head; then sand grains or liquid with sand grains at the bottom of the well are mixed with the sand washing liquid, flow out of the inner pipe cavity of the sand washing pipe through the flow guide holes of the sand washing pipe, flow into the closed liquid outlet cavity formed between the liner pipe and the sand washing pipe, and are output to the well through the liquid outlet of the liner pipe. Although the method is feasible, the negative pressure suction at the bottom of the well is possibly insufficient, and parts such as the liner tube, the sand washing tube, the cross joint and the like need to be manufactured separately, so the cost is higher.
Disclosure of Invention
The invention aims to overcome the defects in the prior art and provides a low-pressure and easily-leaked reservoir stratum negative pressure jet continuous sand washing device and method.
The invention adopts the following technical scheme:
a low-pressure leakage-prone reservoir negative pressure jet continuous sand washing device and a method are characterized by comprising a shell and a sand washing assembly; the lower end of the shell is provided with a sand disturbing nozzle, and the middle part of the shell is provided with a sand inlet; the shell is connected with the outer circular conical surface of the lower portion of the sand washing component through threads, a cylindrical cavity formed between the lower end of the shell and the lower end of the sand washing component is a high-pressure cavity, an annular space between the upper portion of the sand washing component and the upper portion of the shell is an annular space power fluid channel, and the sand washing component is provided with an annular space power fluid high-pressure cavity channel, a negative pressure jet nozzle, a throat pipe, a diffusion pipe, a sand inlet channel and a negative pressure suction cavity.
Furthermore, the negative pressure jet nozzle and the diffusion pipe are of a conical structure, the diffusion pipe is connected with an inner pipe of the double-wall drill rod (13) through threads, the throat pipe is a cylindrical channel, and the negative pressure suction cavity is communicated with the sand inlet channel.
Further, the sand disturbing nozzles may be provided in one or several, may be parallel or at an angle to the axis of the housing and the sand washing assembly.
Further, the annular power fluid high-pressure cavity channel is communicated with the high-pressure cavity and the annular power fluid channel.
Further, the low-pressure easily-leaked reservoir negative pressure jet continuous sand washing device is connected with a double-wall drill rod through threads, and the size of the shell is consistent with the outer diameter of the double-wall drill rod.
Further, the low-pressure easily-leaked reservoir negative pressure jet continuous sand washing device is positioned in the underground casing, and a sand bed is arranged below the low-pressure easily-leaked reservoir negative pressure jet continuous sand washing device.
Firstly, the negative pressure jet flow continuous sand washing device is put into a well in place, when a ground high-pressure water injection pump supplies water for circulation to the low-pressure leakage downhole negative pressure jet flow continuous sand washing device, power fluid flows into an annular power fluid channel of the negative pressure jet flow continuous sand washing device from the annulus of a double-wall drill rod, and then the power fluid flows into a high-pressure cavity through an annular power fluid high-pressure cavity channel;
the fluid in the high-pressure cavity flows through two directions, wherein most of the fluid flows through a negative-pressure jet nozzle of a sand washing component of the negative-pressure jet continuous sand washing device, high-speed jet flow is formed at the negative-pressure jet nozzle due to the reduction of the flow cross section area of the fluid, and a local vacuum low-pressure area is formed in the negative-pressure suction cavity; a small part of fluid flows through the sand disturbing nozzle and forms high-speed jet flow due to the reduction of the flow cross section area to impact a sand bed at the bottom of the well to disturb sand grains, and the sand mixing fluid at the bottom of the well returns to the annular space with the sand grains under the action of vacuum suction force and is sucked into a negative pressure suction cavity of the negative pressure jet flow continuous sand washing device from a sand inlet of the shell;
the sucked sand mixing liquid is primarily mixed with high-speed power liquid sprayed out by the negative pressure jet nozzle in the negative pressure suction cavity, and the mixed fluid continuously flows through the throat pipe where the fluid is further mixed; the mixed fluid flows through the diffusion pipe with the diameter of the cross section continuously enlarged, the speed of the internal fluid is continuously reduced, kinetic energy is converted into pressure energy, and finally the pressure energy enters the inner pipe of the double-wall drill rod to complete the whole negative pressure sand washing and ejecting process.
Has the beneficial effects that:
compared with the prior art, the invention has the following beneficial effects:
1. according to the invention, a ground high-pressure pump is used for pumping power fluid from the double-wall drill pipe annulus, and when the power fluid passes through a high-pressure cavity of a negative-pressure jet continuous sand washing device, most of the fluid flows through a negative-pressure jet nozzle and is ejected upwards at a high speed to form a vacuum low-pressure area; and another small part of fluid flows through the sand disturbing nozzle to impact and disturb the sand bed at the bottom of the well, and the sand mixing fluid at the bottom of the well flows into the inner pipe under the action of negative pressure suction and then returns out from the well mouth through the inner pipe, so that the sand washing efficiency is high.
3. The negative pressure jet flow continuous sand washing device with reasonable parameter design is selected aiming at different low pressure leakage reservoirs, so that the pressure of a bottom hole flow field during sand washing can be reduced, the leakage and the pollution to the production reservoir during sand washing operation are reduced, and various low pressure leakage problems can be effectively solved.
4. The sand washing circulation is basically arranged in the double-wall drill rod and the continuous sand washing device, solves the problems that the traditional sand washing process is difficult to establish circulation, the sand washing liquid is easy to leak and the like, and provides a new idea and a solution for the sand washing operation of a low-pressure easy-to-leak well.
5. The invention has the advantages of simple structure principle, high process reliability, strong practicability and low manufacturing cost.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic representation of the downhole location of the present invention;
FIG. 3 is a schematic view of a continuous sand washing process for a leaky reservoir
FIG. 4 is a schematic illustration of the construction of the sand wash assembly of the present invention;
FIG. 5 is a three-dimensional model of the present invention;
FIG. 6 is a schematic cross-sectional view of a three-dimensional model of the present invention;
in the figure: 1. the device comprises a shell, 2, a sand washing component, 3, a sand disturbing nozzle, 4, a sand inlet, 5, a high-pressure cavity, 6, an annular power fluid channel, 7, an annular power fluid high-pressure cavity channel, 8, a negative pressure jet nozzle, 9, a throat pipe, 10, a diffusion pipe, 11, a sand inlet channel, 12, a negative pressure suction cavity, 13, a double-wall drill rod, 14, an inner pipe, 15, a double-wall drill rod annular space, 16, a sand bed, 17, a sleeve, 18, a power fluid inlet, 19, a ground high-pressure water injection pump, 20, a throttle valve, 21, a separator, 22, a vibrating screen, 23, a sand mixing fluid outlet, 24, a packer, 25 and a low-pressure easily-leaking reservoir negative pressure jet continuous sand washing device.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the technical solutions of the present invention are described below clearly and completely, and it is obvious that the described embodiments are some, not all embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
As shown in figures 1-6, the invention provides a low-pressure easily-leaked reservoir negative pressure jet continuous sand washing device and a method, 1, the low-pressure easily-leaked reservoir negative pressure jet continuous sand washing device and the method are characterized in that the device comprises a shell (1) and a sand washing component (2); a sand disturbing nozzle (3) is arranged at the lower end of the shell (1), and a sand inlet (4) is arranged in the middle of the shell (1); the sand washing device is characterized in that the shell (1) is connected with the outer circular conical surface of the lower portion of the sand washing component (2) through threads, a cylindrical cavity formed between the lower end of the shell (1) and the lower end of the sand washing component (2) is a high-pressure cavity (5), an annulus between the upper portion of the sand washing component (2) and the upper portion of the shell (1) is an annulus power fluid channel (6), and the sand washing component (2) is provided with an annulus power fluid high-pressure cavity channel (7), a negative pressure jet nozzle (8), a throat pipe (9), a diffusion pipe (10), a sand inlet channel (11) and a negative pressure suction cavity (12).
The negative pressure jet nozzle (8) and the diffusion pipe (10) are of a conical structure, the diffusion pipe (10) is connected with an inner pipe (14) of a double-wall drill rod (13) through threads, the throat pipe (9) is a cylindrical channel, and the negative pressure suction cavity (12) is communicated with the sand inlet channel (11).
The sand disturbing nozzles (3) can be arranged in one or more positions, and can be parallel to or at an angle with the axis of the shell (1) and the sand washing component (2).
The annular power fluid high-pressure cavity passage (7) is communicated with the high-pressure cavity (5) and the annular power fluid passage (6).
The low-pressure easily-leaked reservoir negative pressure jet continuous sand washing device is connected with a double-wall drill rod (13) through threads, and the size of the shell (1) is consistent with the outer diameter of the double-wall drill rod (13).
The low-pressure easily-leaked reservoir negative pressure jet continuous sand washing device is positioned in a downhole casing (17), and a sand bed (16) is arranged below the low-pressure easily-leaked reservoir negative pressure jet continuous sand washing device.
A low-pressure easily-leaked reservoir negative pressure jet continuous sand washing device and a method are characterized in that the sand washing method comprises the following steps:
1) Firstly, the negative pressure jet flow continuous sand washing device is put into a well in place, when a ground high-pressure water injection pump (19) supplies water for the low-pressure leakage downhole negative pressure jet flow continuous sand washing device for circulation, power fluid flows into an annular power fluid channel (6) of the negative pressure jet flow continuous sand washing device from an annular space (15) of a double-wall drill rod, and then flows into a high-pressure cavity (5) through an annular power fluid high-pressure cavity channel (7);
2) The fluid in the high-pressure cavity (5) flows through two directions, wherein most of the fluid flows through a negative pressure jet flow nozzle (8) of a sand washing component (2) of the negative pressure jet flow continuous sand washing device, high-speed jet flow is formed in the negative pressure jet flow nozzle (8) due to the reduction of the flow cross section area of the fluid, and a local vacuum low-pressure area is formed in the negative pressure suction cavity (12); a small part of fluid flows through the sand disturbing nozzle (3) and forms high-speed jet flow due to the reduction of the flow cross section area to impact a sand bed (16) at the bottom of the well to disturb sand grains, and the sand mixing fluid at the bottom of the well returns to the annular space under the action of vacuum suction force and is sucked into a negative pressure suction cavity (12) of the negative pressure jet flow continuous sand washing device from a sand inlet (4) of the shell (1);
3) The sucked sand mixing liquid is primarily mixed with high-speed power liquid sprayed by the negative pressure jet nozzle (8) in the negative pressure suction cavity (12), and the mixed fluid continuously flows through the throat (9) to be further mixed; the mixed fluid flows through the diffusion pipe (10) with the diameter of the cross section expanding continuously, the speed of the internal fluid is reduced continuously, the kinetic energy is changed into pressure energy, and finally the pressure energy enters the double-wall drill pipe inner pipe (14) to complete the whole negative pressure sand washing and ejecting process, and when a ground high-pressure water injection pump continuously supplies water to the negative pressure jet flow continuous sand washing device, the negative pressure jet flow continuous sand washing device can continuously wash sand.
Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (7)
1. A low-pressure leakage-prone reservoir stratum negative pressure jet continuous sand washing device and a method are characterized by comprising a shell (1) and a sand washing assembly (2); a sand disturbing nozzle (3) is arranged at the lower end of the shell (1), and a sand inlet (4) is formed in the middle of the shell (1); the sand washing device is characterized in that the shell (1) is connected with an outer circular conical surface at the lower part of the sand washing component (2) through threads, a cylindrical cavity formed between the lower end of the shell (1) and the lower end of the sand washing component (2) is a high-pressure cavity (5), an annular space between the upper part of the sand washing component (2) and the upper part of the shell (1) is an annular space power liquid channel (6), and the sand washing component (2) is provided with an annular space power liquid high-pressure cavity channel (7), a negative pressure jet nozzle (8), a throat pipe (9), a diffusion pipe (10), a sand inlet channel (11) and a negative pressure suction cavity (12).
2. The low-pressure leaky reservoir negative-pressure jet continuous sand washing device is characterized in that the negative-pressure jet nozzle (8) and the diffuser pipe (10) are of conical structures, the diffuser pipe (10) is in threaded connection with an inner pipe (14) of a double-wall drill pipe (13), the throat pipe (9) is a cylindrical channel, and the negative-pressure suction cavity (12) is communicated with the sand inlet channel (11).
3. The low-pressure leaky reservoir negative pressure jet continuous sand washing device is characterized in that the sand disturbing nozzles (3) can be arranged in one or more positions, and can be parallel to or at an angle with the axis of the shell (1) and the sand washing assembly (2).
4. The low-pressure easily-leaked reservoir negative pressure jet continuous sand washing device is characterized in that the annular power fluid high-pressure cavity passage (7) is communicated with the high-pressure cavity (5) and the annular power fluid passage (6).
5. The low-pressure leakage-prone reservoir negative pressure jet continuous sand washing device is characterized in that the low-pressure leakage-prone reservoir negative pressure jet continuous sand washing device is connected with a double-wall drill rod (13) through threads, and the size of the shell (1) is consistent with the outer diameter of the double-wall drill rod (13).
6. The low-pressure leaky reservoir negative pressure jet continuous sand washing device is characterized in that the low-pressure leaky reservoir negative pressure jet continuous sand washing device is located in a downhole casing (17), and a sand bed (16) is arranged below the low-pressure leaky reservoir negative pressure jet continuous sand washing device.
7. The device and the method for continuously washing sand by using the low-pressure leaky reservoir negative pressure jet flow as claimed in claim 1, wherein the sand washing method comprises the following steps:
1) Firstly, the negative pressure jet flow continuous sand washing device is put into a well in place, when a ground high-pressure water injection pump (19) supplies water for the low-pressure leakage downhole negative pressure jet flow continuous sand washing device for circulation, power fluid flows into an annular power fluid channel (6) of the negative pressure jet flow continuous sand washing device from an annular space (15) of a double-wall drill rod, and then flows into a high-pressure cavity (5) through an annular power fluid high-pressure cavity channel (7);
2) The fluid in the high-pressure cavity (5) flows through two directions, wherein most of the fluid flows through a negative-pressure jet nozzle (8) of a sand washing component (2) of the negative-pressure jet continuous sand washing device, high-speed jet flow is formed at the negative-pressure jet nozzle (8) due to the reduction of the flow cross section area of the fluid, and a local vacuum low-pressure area is formed in a negative-pressure suction cavity (12); a small part of fluid flows through the sand disturbing nozzle (3) and forms high-speed jet flow due to the reduction of the flow cross section area to impact a sand bed (16) at the bottom of the well to disturb sand grains, and the sand mixing fluid at the bottom of the well returns to the annular space under the action of vacuum suction force and is sucked into a negative pressure suction cavity (12) of the negative pressure jet flow continuous sand washing device from a sand inlet (4) of the shell (1);
3) The sucked sand mixing liquid is primarily mixed with high-speed power liquid sprayed by the negative pressure jet nozzle (8) in the negative pressure suction cavity (12), and the mixed fluid continuously flows through the throat (9) to be further mixed; the mixed fluid flows through the diffusion pipe (10) with the diameter of the section expanding continuously, the speed of the internal fluid is reduced continuously, the kinetic energy is changed into pressure energy, and finally the pressure energy enters the double-wall drill pipe inner pipe (14) to complete the whole negative pressure sand washing and ejecting process, and when the ground high-pressure water injection pump (19) continuously supplies water to the negative pressure jet flow continuous sand washing device, the negative pressure jet flow continuous sand washing device can continuously wash sand.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210853517.XA CN115162980A (en) | 2022-07-20 | 2022-07-20 | Low-pressure leakage-prone reservoir stratum negative pressure jet continuous sand washing device and method |
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| CN202210853517.XA CN115162980A (en) | 2022-07-20 | 2022-07-20 | Low-pressure leakage-prone reservoir stratum negative pressure jet continuous sand washing device and method |
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Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4183722A (en) * | 1977-06-06 | 1980-01-15 | Roeder George K | Downhole jet pumps |
| US20030042048A1 (en) * | 2001-09-04 | 2003-03-06 | Hughes William James | Down hole drilling assembly with independent jet pump |
| CN1975098A (en) * | 2006-12-13 | 2007-06-06 | 辽河石油勘探局 | Self-suction low-pressure absorption well sand flushing technology |
| CN103388465A (en) * | 2012-05-10 | 2013-11-13 | 中国石油大学(华东) | Downhole device using hydraulic jets of parallel tubes to flush pulverized coal |
| CN103790521A (en) * | 2013-12-09 | 2014-05-14 | 中国石油大学(北京) | Safe and efficient mud drilling jet mill bit for horizontal wells |
| CN104329027A (en) * | 2014-11-03 | 2015-02-04 | 中国石油大学(北京) | Double-wall drill-pipe counterflush drilling jet pump drill bit |
| CN104373045A (en) * | 2014-11-03 | 2015-02-25 | 中国石油大学(北京) | Tangential injection type swirl flow jet flow pump drill bit of double-wall drilling rod reverse circulating drilling well |
| CN204386484U (en) * | 2014-11-03 | 2015-06-10 | 中国石油大学(北京) | The tangential pouring-in swirl jet pump drill head of a kind of double-wall drill pipe counterflush drilling |
| CN204386483U (en) * | 2014-11-03 | 2015-06-10 | 中国石油大学(北京) | A kind of double-wall drill pipe counterflush drilling fixed guide vane type swirl jet pump drill head |
| CN106437570A (en) * | 2016-11-21 | 2017-02-22 | 西南石油大学 | Drilling type continuous sand blasting device |
| CN206267815U (en) * | 2016-11-21 | 2017-06-20 | 西南石油大学 | Drilling type continuous sand flushing device |
-
2022
- 2022-07-20 CN CN202210853517.XA patent/CN115162980A/en active Pending
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4183722A (en) * | 1977-06-06 | 1980-01-15 | Roeder George K | Downhole jet pumps |
| US20030042048A1 (en) * | 2001-09-04 | 2003-03-06 | Hughes William James | Down hole drilling assembly with independent jet pump |
| CN1975098A (en) * | 2006-12-13 | 2007-06-06 | 辽河石油勘探局 | Self-suction low-pressure absorption well sand flushing technology |
| CN103388465A (en) * | 2012-05-10 | 2013-11-13 | 中国石油大学(华东) | Downhole device using hydraulic jets of parallel tubes to flush pulverized coal |
| CN103790521A (en) * | 2013-12-09 | 2014-05-14 | 中国石油大学(北京) | Safe and efficient mud drilling jet mill bit for horizontal wells |
| CN104329027A (en) * | 2014-11-03 | 2015-02-04 | 中国石油大学(北京) | Double-wall drill-pipe counterflush drilling jet pump drill bit |
| CN104373045A (en) * | 2014-11-03 | 2015-02-25 | 中国石油大学(北京) | Tangential injection type swirl flow jet flow pump drill bit of double-wall drilling rod reverse circulating drilling well |
| CN204386484U (en) * | 2014-11-03 | 2015-06-10 | 中国石油大学(北京) | The tangential pouring-in swirl jet pump drill head of a kind of double-wall drill pipe counterflush drilling |
| CN204386483U (en) * | 2014-11-03 | 2015-06-10 | 中国石油大学(北京) | A kind of double-wall drill pipe counterflush drilling fixed guide vane type swirl jet pump drill head |
| CN106437570A (en) * | 2016-11-21 | 2017-02-22 | 西南石油大学 | Drilling type continuous sand blasting device |
| CN206267815U (en) * | 2016-11-21 | 2017-06-20 | 西南石油大学 | Drilling type continuous sand flushing device |
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Application publication date: 20221011 |