CN114000857B - Device for improving physical property of shale oil reservoir - Google Patents
Device for improving physical property of shale oil reservoir Download PDFInfo
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- CN114000857B CN114000857B CN202111263282.0A CN202111263282A CN114000857B CN 114000857 B CN114000857 B CN 114000857B CN 202111263282 A CN202111263282 A CN 202111263282A CN 114000857 B CN114000857 B CN 114000857B
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- 239000003079 shale oil Substances 0.000 title claims abstract description 31
- 230000000704 physical effect Effects 0.000 title claims abstract description 23
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 76
- 238000007789 sealing Methods 0.000 claims abstract description 69
- 230000005540 biological transmission Effects 0.000 claims description 25
- 238000009434 installation Methods 0.000 claims description 14
- 238000011084 recovery Methods 0.000 abstract description 4
- NRTLIYOWLVMQBO-UHFFFAOYSA-N 5-chloro-1,3-dimethyl-N-(1,1,3-trimethyl-1,3-dihydro-2-benzofuran-4-yl)pyrazole-4-carboxamide Chemical compound C=12C(C)OC(C)(C)C2=CC=CC=1NC(=O)C=1C(C)=NN(C)C=1Cl NRTLIYOWLVMQBO-UHFFFAOYSA-N 0.000 abstract 1
- 238000005553 drilling Methods 0.000 description 11
- 239000012535 impurity Substances 0.000 description 3
- 230000005611 electricity Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- BVKZGUZCCUSVTD-UHFFFAOYSA-L Carbonate Chemical compound [O-]C([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-L 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 239000011229 interlayer Substances 0.000 description 1
- 239000010410 layer Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Images
Classifications
-
- 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
- E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
- E21B43/25—Methods for stimulating production
- E21B43/26—Methods for stimulating production by forming crevices or fractures
-
- 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
- E21B28/00—Vibration generating arrangements for boreholes or wells, e.g. for stimulating production
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- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Apparatuses For Generation Of Mechanical Vibrations (AREA)
Abstract
The invention discloses a device for improving physical properties of a shale oil reservoir, and belongs to the technical field of shale oil and gas exploitation. The device for improving physical properties of the shale oil reservoir comprises: the outer wall of the first sealing cover is provided with a circumferential first groove, a first sealing rubber ring is arranged in the first groove, and a water outlet of the one-way valve is communicated with the first limber hole; the first sliding cover is connected to the right end of the first sealing cover; the left end face of the vibrating tube is connected with the right end face of the first sliding cover in a sliding mode; the output end of the vibrating mechanism is connected with the vibrating tube; the left end face of the second sliding cover is connected with the right end face of the vibrating tube in a sliding mode, and a connecting rod is arranged between the second sliding cover and the first sliding cover; the outer wall of the second sealing cover is provided with a circumferential second groove, and a second sealing rubber ring is arranged in the second groove. The device for improving the physical property of the shale oil reservoir can extrude shale by using the vibrating water body to increase and enlarge cracks in the shale, thereby improving the physical property of the shale oil reservoir and improving the recovery ratio of shale oil.
Description
Technical Field
The invention relates to the technical field of shale oil and gas exploitation, in particular to a device for improving physical properties of a shale oil reservoir.
Background
Shale oil refers to a petroleum resource that resides in the pores, cracks and tight carbonate or sandstone thin interlayers of shale. Shale oil in the shale oil shale layer system is difficult to recover, so that the physical property of the shale reservoir is required to be improved before recovery.
The existing device for improving the physical property of the shale reservoir lacks the function of enlarging and increasing cracks in the perforation, so that the drainage area in the perforation of a well is difficult to increase, and the exploitation efficiency of shale oil is difficult to greatly improve.
Disclosure of Invention
The invention aims to overcome the problems in the prior art, and provides a device for improving the physical properties of a shale oil reservoir, which can utilize a vibrating water body to extrude shale to increase and enlarge cracks in the shale, thereby improving the physical properties of the shale reservoir and improving the exploitation efficiency of shale oil.
The invention provides a device for improving physical properties of a shale oil reservoir, which comprises:
the outer wall of the first sealing cover is provided with a circumferential first groove, a first sealing rubber ring is arranged in the first groove, a first water through hole is formed in the side wall of the first sealing cover, a one-way valve is arranged in the first sealing cover, a water inlet of the one-way valve is communicated with a water supply device, and a water outlet of the one-way valve is communicated with the first water through hole;
the first sliding cover is connected to the right end of the first sealing cover;
the left end surface of the vibrating tube is connected with the right end surface of the first sliding cover in a sliding manner;
the vibration mechanism is arranged in the vibration pipe and connected with the first sliding cover, the output end of the vibration mechanism is connected with the vibration pipe, and the vibration mechanism is connected with a power supply device;
the left end face of the second sliding cover is connected with the right end face of the vibrating tube in a sliding mode, a connecting rod is further arranged between the second sliding cover and the first sliding cover, one end of the connecting rod is fixedly connected with the first sliding cover, and the other end of the connecting rod is fixedly connected with the second sliding cover;
the outer wall of the second sealing cover is provided with a circumferential second groove, a second sealing rubber ring is arranged in the second groove, and the first water through hole is formed between the first sealing rubber ring and the second sealing rubber ring.
Preferably, vibration mechanism includes install bin, transmission shaft, power device and cam, in the vibrating tube was located to the install bin, the install bin linked firmly in the right-hand member face of first sliding closure, transmission shaft one end with the install bin bearing is connected, the other end of transmission shaft with second sliding closure bearing is connected, power device locates in the install bin, power device's output with the transmission shaft is connected, and power device intercommunication has the controller, the controller with the power supply unit electricity is connected, the cam link firmly in the transmission shaft axle body, the cam outer wall with vibrating tube inner wall sliding connection.
Preferably, the side wall of the second sealing cover is provided with a second water through hole, the second water through hole is arranged between the first sealing rubber ring and the second sealing rubber ring, the second water through hole is communicated with an electric valve, the electric valve is arranged between the second sealing cover and the second sliding cover, the right end face of the second sealing cover is provided with a third water through hole, the electric valve is communicated with the third water through hole, and the electric valve is electrically connected with the controller.
Preferably, a filter is further arranged between the second water through hole and the electric valve.
Preferably, the inner walls of the first sliding cover and the second sliding cover are provided with circumferential third grooves, third rubber rings are arranged in the third grooves, flanges are arranged at two ends of the vibrating tube, and the flanges are connected with the third grooves in a sliding mode and are in close contact with the third rubber rings.
Preferably, the transmission shaft body is provided with two cams, and the two cams are connected with the inner wall of the vibrating tube in a sliding manner.
Preferably, a dynamic sealing device is arranged between the transmission shaft and the mounting box.
Compared with the prior art, the invention has the beneficial effects that: the device for improving the physical property of the shale oil reservoir can extrude shale by using the vibrating water body to increase and enlarge cracks in the shale, thereby improving the physical property of the shale oil reservoir and improving the extraction efficiency of shale oil. Through setting up install bin, transmission shaft, power device and cam to can effectively prevent to lead to the fact vibrating tube amplitude undersize or stop the phenomenon of vibration because the sealed intracavity water resistance of vibrating tube is too big. Through setting up motorised valve and second through hole, can conveniently promote this device and remove in the drilling, and then make things convenient for the staff to operate. Through setting up the filter, can effectively prevent to contact the impurity water body that thoughtlessly has of crossing the well drilling wall of a well and cause the motorised valve to block up when the motorised valve. Through setting up the flange at the vibrating tube both ends, the flange and the third rubber circle in close contact with at the vibrating tube both ends to guaranteed the gas tightness in the vibrating tube, and then effectively prevented that the water from getting into and causing the power device trouble in the install bin. Through setting up two cams, when can making power device pass through the vibration of transmission shaft drive vibrating tube, the vibrating tube does not take place the slope to effectively prevent vibrating tube vibration in-process card from dying. Through setting up dynamic seal device, further increase the leakproofness of install bin to prevent that the power device in the install bin from receiving water damage.
Drawings
FIG. 1 is a schematic illustration of the present invention in operation;
FIG. 2 is a schematic top view of the present invention;
FIG. 3 isbase:Sub>A schematic view of the structure of the A-A surface of the present invention.
Description of reference numerals:
101. the vibration type drilling machine comprises a first sealing cover, 102, a first sealing rubber ring, 103, a first water through hole, 104, a one-way valve, 105, a first sliding cover, 106, a vibration pipe, 107, a second sliding cover, 108, a connecting rod, 109, a second sealing cover, 110, a second sealing rubber ring, 201, an installation box, 202, a transmission shaft, 203, a power device, 204, a cam, 301, a second water through hole, 302, an electric valve, 303, a third water through hole, 4, a filter, 501, a third rubber ring, 502, a flange, 6, a crack, 7, a drilling well and 8 perforations.
Detailed Description
Detailed description of the preferred embodimentsthe following detailed description of the present invention will be made with reference to the accompanying drawings 1-3, although it should be understood that the scope of the present invention is not limited to the specific embodiments. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the scope of the present invention.
Example 1:
as shown in fig. 1-3, the present invention provides an apparatus for improving physical properties of a shale oil reservoir, comprising: the sealing structure comprises a first sealing cover 101, a first sliding cover 105, a vibrating pipe 106, a vibrating mechanism, a second sliding cover 107 and a second sealing cover 109, wherein a circumferential first groove is formed in the outer wall of the first sealing cover 101, a first sealing rubber ring 102 is arranged in the first groove, a first water through hole 103 is formed in the side wall of the first sealing cover 101, a one-way valve 104 is arranged in the first sealing cover 101, a water inlet of the one-way valve 104 is communicated with a water supply device, and a water outlet of the one-way valve 104 is communicated with the first water through hole 103; the first sliding cover 105 is connected to the right end of the first sealing cover 101; the left end face of the vibrating tube 106 is connected with the right end face of the first sliding cover 105 in a sliding manner; the vibration mechanism is arranged in the vibration pipe 106 and connected with the first sliding cover 105, the output end of the vibration mechanism is connected with the vibration pipe 106, and the vibration mechanism is connected with a power supply device; the left end face of the second sliding cover 107 is connected with the right end face of the vibrating tube 106 in a sliding manner, a connecting rod 108 is further arranged between the second sliding cover 107 and the first sliding cover 105, one end of the connecting rod 108 is fixedly connected with the first sliding cover 105, and the other end of the connecting rod 108 is fixedly connected with the second sliding cover 107; the outer wall of the second sealing cover 109 is provided with a second circumferential groove, a second sealing rubber ring 110 is arranged in the second groove, and the first water through hole 103 is arranged between the first sealing rubber ring 102 and the second sealing rubber ring 110.
The working principle of example 1 will now be briefly described:
the device is descended into the well 7, and is continuously pushed to the position where the perforation 8 is performed, at the moment, the first sealing rubber ring 102 on the first sealing cover 101 is in sealing connection with the wall of the well 7, the second sealing rubber ring 110 on the second sealing cover 109 is also in sealing connection with the wall of the well 7, and a sealing cavity is formed among the wall of the well 7, the first sealing cover 101, the second sealing cover 109 and the perforation 8. Opening water supply installation, water supply installation leads to water to the sealed intracavity through check valve 104 and first limbers 103, after water is full of sealed chamber and perforation 8, open vibration mechanism, vibration mechanism begins the vibration, the vibration is transmitted to on the vibrating tube 106 rather than being connected, vibrating tube 106 is on first sliding closure 105 and second sliding closure 107 reciprocating sliding, vibrating tube 106 drives the water vibration of sealed intracavity, the water of vibration squeezes into in the crack 6 of shale from perforation 8, because the sealed intracavity has been full of the water, the water of consequently vibration can produce pressure to crack 6 of shale under the effect of vibration, and then extrusion expansion crack 6. When the cracks 6 are expanded, the water in the sealed cavity is not filled with the sealed cavity, at the moment, the one-way valve 104 is automatically opened under the water pressure of the water supply device, the water is automatically filled into the sealed cavity until the water is filled with the sealed cavity, then the water is squeezed into the cracks 6 under the vibration of the vibration tube 106, the cracks 6 are continuously expanded, the circulation is repeated, the cracks 6 in the perforation holes 8 are squeezed by the water to be increased, the physical properties of a shale oil reservoir are improved, and the recovery ratio of shale oil is improved.
The device for improving the physical property of the shale oil reservoir can extrude shale by using the vibrating water body to enlarge and increase the cracks 6 in the shale, thereby improving the physical property of the shale oil reservoir and improving the recovery ratio of shale oil.
Example 2:
on the basis of the embodiment 1, in order to increase the vibration strength of the vibration tube 106, the vibration tube 106 is prevented from excessively reducing the amplitude or stopping the vibration due to the excessive resistance of the water body in the sealed cavity of the vibration tube 106.
As shown in fig. 2, wherein, the vibration mechanism includes install bin 201, transmission shaft 202, power device 203 and cam 204, install bin 201 is located in vibrating tube 106, install bin 201 link firmly in the right-hand member face of first sliding closure 105, transmission shaft 202 one end with install bin 201 bearing connection, the other end of transmission shaft 202 with second sliding closure 107 bearing connection, power device 203 locates in install bin 201, power device 203's output with transmission shaft 202 is connected, and power device 203 communicates has the controller, the controller with the power supply unit electricity is connected, cam 204 link firmly in transmission shaft 202 shaft body, the cam 204 outer wall with vibrating tube 106 inner wall sliding connection.
Because power device 203 links firmly on first sliding closure 105 through install bin 201, first sliding closure 105 links firmly with first sealed lid 101 again, first sealed lid 101 again with well drilling 7 wall of a well in close contact with, therefore when power device 203 drive transmission shaft 202 rotated, the axis of rotation drives cam 204 and rotates, cam 204 directly with vibrating tube 106 sliding connection, both drive vibrating tube 106, utilize the reaction force that acts on the well drilling 7 wall of a well to vibrate, but not utilize the inertia of pendulum to vibrate, and the eccentricity of cam 204 is certain, therefore the vibration range of vibrating tube 106 can not receive the influence of the water resistance in the seal chamber, thereby can effectively prevent vibrating tube 106 because the too big phenomenon that causes vibrating tube 106 amplitude undersize or stop the vibration of water resistance in the seal chamber.
Example 3:
on the basis of the embodiment 2, the device is convenient to push and move in the well 7, so that the operation of workers is convenient.
As shown in fig. 2 and 3, a second water through hole 301 is formed in a side wall of the second sealing cover 109, the second water through hole 301 is formed between the first sealing rubber ring 102 and the second sealing rubber ring 110, the second water through hole 301 is communicated with an electric valve 302, the electric valve 302 is formed between the second sealing cover 109 and the second sliding cover 107, a third water through hole 303 is formed in a right end face of the second sealing cover 109, and the electric valve 302 is communicated with the third water through hole 303.
When needs promote this device to 7 well head directions in well drilling, open motorised valve 302 through the controller, the water that water supply installation supplied with passes through motorised valve 302 and 7 well bottom directions in second through-hole 301 flow direction well drilling, after being full of the water between this device and the shaft bottom, open power device 203 through the controller, power device 203 drive vibrating tube 106 vibrates, the vibrating tube 106 of vibration stirs the water, the water of vibration produces the pressure to 7 well head directions in well drilling to this device, thereby promote this device to the motion of well head direction, this device is to one section distance back water supply installation of well head direction motion through check valve 104 continuation to filling into the water body between this device and the shaft bottom, under the vibration of vibrating tube 106, this device continues to 7 well head direction motion in well drilling, so circulation is reciprocal, thereby conveniently promote this device and remove in well drilling 7, and then make things convenient for the staff to operate.
Preferably, as shown in fig. 2, a filter 4 is further disposed between the second water through hole 301 and the electric valve 302. By arranging the filter 4, the electric valve 302 can be effectively prevented from being blocked by impurities mixed in the water body which contacts the well wall of the well 7 when the impurities pass through the electric valve 302.
As a preferable scheme, as shown in fig. 2, circumferential third grooves are respectively formed in inner walls of the first sliding cover 105 and the second sliding cover 107, a third rubber ring 501 is arranged in each third groove, flanges 502 are respectively arranged at two ends of the vibration pipe 106, the flanges 502 are slidably connected with the third grooves, and the flanges 502 are in close contact with the third rubber rings 501. Through setting up flange 502 at vibrating tube 106 both ends, when vibrating tube 106 vibrates, the flange 502 at vibrating tube 106 both ends vibrates in the third recess reciprocating vibration of first sliding closure 105 and second sliding closure 107, and when vibrating tube 106 vibrates, the flange 502 and the third rubber circle 501 in close contact with at vibrating tube 106 both ends to the gas tightness in the vibrating tube 106 has been guaranteed, thereby effectively prevents that the water from getting into and causing power device 203 trouble in the install bin 201.
Preferably, as shown in fig. 2, the shaft body of the transmission shaft 202 is provided with two cams 204, and both cams 204 are slidably connected to the inner wall of the vibrating tube 106. Through setting up two cams 204, can make power device 203 pass through transmission shaft 202 drive vibration pipe 106 vibration time, vibration pipe 106 does not take place the slope to effectively prevent the vibration in-process card of vibration pipe 106.
Preferably, as shown in fig. 2, a dynamic sealing device is arranged between the transmission shaft 202 and the installation box 201. By providing the dynamic sealing device, the sealing performance of the installation box 201 is further increased, so that the power device 203 in the installation box 201 is prevented from being damaged by water.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (5)
1. An apparatus for improving physical properties of a shale oil reservoir, comprising:
the outer wall of the first sealing cover (101) is provided with a circumferential first groove, a first sealing rubber ring (102) is arranged in the first groove, a first water through hole (103) is formed in the side wall of the first sealing cover (101), a one-way valve (104) is arranged in the first sealing cover (101), a water inlet of the one-way valve (104) is communicated with a water supply device, and a water outlet of the one-way valve (104) is communicated with the first water through hole (103);
a first sliding cover (105) connected to the right end of the first sealing cover (101);
the left end face of the vibrating tube (106) is connected with the right end face of the first sliding cover (105) in a sliding mode;
the vibration mechanism is arranged in the vibration pipe (106) and connected with the first sliding cover (105), the output end of the vibration mechanism is connected with the vibration pipe (106), and the vibration mechanism is connected with a power supply device;
the left end face of the second sliding cover (107) is connected with the right end face of the vibrating tube (106) in a sliding mode, a connecting rod (108) is further arranged between the second sliding cover (107) and the first sliding cover (105), one end of the connecting rod (108) is fixedly connected with the first sliding cover (105), and the other end of the connecting rod (108) is fixedly connected with the second sliding cover (107);
a second sealing cover (109), a second circumferential groove is formed in the outer wall of the second sealing cover, a second sealing rubber ring (110) is arranged in the second groove, and the first water through hole (103) is formed between the first sealing rubber ring (102) and the second sealing rubber ring (110);
the vibration mechanism comprises an installation box (201), a transmission shaft (202), a power device (203) and a cam (204), wherein the installation box (201) is arranged in a vibration pipe (106), the installation box (201) is fixedly connected to the right end face of a first sliding cover (105), one end of the transmission shaft (202) is connected with a bearing of the installation box (201), the other end of the transmission shaft (202) is connected with a bearing of a second sliding cover (107), the power device (203) is arranged in the installation box (201), the output end of the power device (203) is connected with the transmission shaft (202), the power device (203) is communicated with a controller, the controller is electrically connected with the power device, the cam (204) is fixedly connected to the shaft body of the transmission shaft (202), and the outer wall of the cam (204) is slidably connected with the inner wall of the vibration pipe (106);
the side wall of the second sealing cover (109) is provided with a second water through hole (301), the second water through hole (301) is arranged between the first sealing rubber ring (102) and the second sealing rubber ring (110), the second water through hole (301) is communicated with an electric valve (302), the electric valve (302) is arranged between the second sealing cover (109) and the second sliding cover (107), the right end face of the second sealing cover (109) is provided with a third water through hole (303), the electric valve (302) is communicated with the third water through hole (303), and the electric valve (302) is electrically connected with the controller.
2. An apparatus for improving physical properties of shale oil reservoirs according to claim 1, wherein a filter (4) is further provided between the second water through hole (301) and the electric valve (302).
3. The device for improving the physical property of the shale oil reservoir as claimed in claim 1, wherein the inner walls of the first sliding cover (105) and the second sliding cover (107) are provided with a circumferential third groove, a third rubber ring (501) is arranged in the third groove, two ends of the vibrating tube (106) are provided with flanges (502), the flanges (502) are connected with the third groove in a sliding manner, and the flanges (502) are in close contact with the third rubber ring (501).
4. The apparatus for improving physical properties of a shale oil reservoir as claimed in claim 1, wherein the shaft body of the drive shaft (202) is provided with two cams (204), and both cams (204) are slidably connected with the inner wall of the vibrating tube (106).
5. An apparatus for improving physical properties of shale oil reservoirs according to claim 1, wherein a dynamic sealing device is provided between the transmission shaft (202) and the installation box (201).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111263282.0A CN114000857B (en) | 2021-10-28 | 2021-10-28 | Device for improving physical property of shale oil reservoir |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111263282.0A CN114000857B (en) | 2021-10-28 | 2021-10-28 | Device for improving physical property of shale oil reservoir |
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| CN114000857A CN114000857A (en) | 2022-02-01 |
| CN114000857B true CN114000857B (en) | 2022-11-18 |
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| CN202111263282.0A Active CN114000857B (en) | 2021-10-28 | 2021-10-28 | Device for improving physical property of shale oil reservoir |
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Family Cites Families (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004052457A (en) * | 2002-07-23 | 2004-02-19 | Kajima Corp | Flushing device for pit wall |
| CN2684945Y (en) * | 2003-07-16 | 2005-03-16 | 徐凌堂 | Underwell variable frequency sound wave vibrating instrument |
| US20090178801A1 (en) * | 2008-01-14 | 2009-07-16 | Halliburton Energy Services, Inc. | Methods for injecting a consolidation fluid into a wellbore at a subterranian location |
| US8082989B2 (en) * | 2008-08-19 | 2011-12-27 | Flow Industries Ltd. | Method for impulse stimulation of oil and gas well production |
| CN102373908B (en) * | 2011-10-08 | 2014-08-13 | 龚大建 | Underground ultrasonic yield-increasing pumping device for coalseam gas |
| US10677006B2 (en) * | 2017-11-17 | 2020-06-09 | Rival Downhole Tools Lc | Vibration assembly and method |
| CN110107258B (en) * | 2019-06-14 | 2024-04-02 | 南京聚源隆能源科技有限公司 | Hydraulic pulse wave injection increasing device |
| CN111058820A (en) * | 2019-12-13 | 2020-04-24 | 龚大建 | Device for improving physical properties of compact shale oil and gas reservoir and control method thereof |
| CN111677472B (en) * | 2020-06-11 | 2021-07-23 | 中国石油大学(北京) | Valve type hydraulic oscillator |
| CN112576215B (en) * | 2020-12-09 | 2021-10-01 | 河海大学 | Ultrasonic device for oil shale staged hydraulic fracturing and construction method |
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