CN206694021U - A kind of control valve and hydrofracturing geodetic stress test device - Google Patents
A kind of control valve and hydrofracturing geodetic stress test device Download PDFInfo
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- CN206694021U CN206694021U CN201720411540.8U CN201720411540U CN206694021U CN 206694021 U CN206694021 U CN 206694021U CN 201720411540 U CN201720411540 U CN 201720411540U CN 206694021 U CN206694021 U CN 206694021U
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- leading rod
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Abstract
The utility model discloses a kind of control valve, including leading rod, first pressure passage and second pressure passage, the spout hole connected with first pressure passage opened up in leading rod outer wall, overflow valve is set with the leading rod outer wall positioned at spout hole region, overflow valve includes hollow valve body, the overflow ducts connected with cavity in valve body opened up are penetrated on valve body wall；Leading rod is passed through from the hollow intracavitary of valve body, and the drive device that overflow valve can be driven to be slided along leading rod outer wall is connected with the overflow valve；The overflow valve along leading rod move when, spout hole and overflow ducts can be docked and connected or stagger cut-off；Being abutted at the top of overflow valve has the compressible elastomeric part being sleeved on leading rod, and being abutted at the top of elastic component has the limited block being fixed on leading rod.The utility model can be achieved packer easily pressurization and pressure release, so that the whole equipment stretched into drilling can be moved up and down easily, be advantageous to the progress tested next time by the design of control valve.
Description
Technical field
The utility model belongs to hydraulic fracturing crustal stress testing equipment, and in particular to a kind of control valve and hydrofracturing are surveyed
Crustal stress experimental rig.
Background technology
The principle of hydraulic fracturing crustal stress experiment is to utilize a pair of expandable rubber packers, deep in predetermined test
One section of drilling of degree packing, liquid medium is then pumped into packing section pressure, according to the characteristic value of fracturing process curve, can be obtained brokenly
The pressure parameters such as split pressure, instantaneous closing presure, reopening pressure, plane crustal stress states are directly inquired into by broken fractuer direction.
Currently used hydraulic loaded mode is divided to two kinds of single channel and binary channels, and single channel refers to packer and pressurized segment
Hydraulic pressure is realized by a passage（Typically hollow drill）, by the pressure of drilling rod, pull out to realize that passage switches.Binary channels is to make
With two independent pressure channels（Typically two high-voltage tubes）Packer and pressurized segment are pressurizeed respectively, pass through the switch on ground
To control the pressure in two passages.
When after a certain section of drilling experiment finishes, it is necessary to which experimental rig to be moved to other one section of progress phase of drilling
Same experiment.But in this course, above two device has the defects of common, because pressue device is placed in aperture,
When test section is deeper, there is no external water pressure if anhydrous in hole, outside packer, pressure caused by the water in packer can cause
Packer inflation is adjacent to hole wall, and the whole equipment stretched into drilling is blocked and can not moved up and down, and leads to not be tried next time
Test.But in the case of having larger external water pressure in drilling, external water pressure can balance out the dilation of packer so that stretch
The equipment entered in drilling can be moved, and therefore, the equipment of prior art is typically only applicable in the drilling of rich water, on dry hole or ground
Using limited in the relatively low drilling of lower water level.
Utility model content
Filled in view of the above-mentioned problems, the utility model aims to provide a kind of hydrofracturing geodetic stress test suitable for dry hole
Put, and the control valve to match.
The utility model solve problem technical scheme be：A kind of control valve, including leading rod, penetrate and set in leading rod
The separate first pressure passage and second pressure passage put, connect with first pressure passage what leading rod outer wall opened up
Logical spout hole, is set with overflow valve on the leading rod outer wall positioned at spout hole region, and the overflow valve is included with hollow
The valve body of chamber, the overflow ducts connected with cavity in valve body opened up are penetrated on valve body wall；
The leading rod is passed through from the hollow intracavitary of valve body, and overflow valve can be driven along leading rod by being connected with the overflow valve
The drive device that outer wall slides；The overflow valve along leading rod move when, spout hole can be docked and connected or stagger with overflow ducts
Cut-off；
Being abutted at the top of the overflow valve has the compressible elastomeric part being sleeved on leading rod, and being abutted at the top of elastic component has fixation
Limited block on leading rod.
In such scheme, overflow valve moves up and down under the drive of drive device along leading rod, when be moved to spout hole with
When overflow ducts lead in succession, the liquid in first pressure passage realizes pressure release；When be moved to spout hole and overflow ducts stagger every
When disconnected, first pressure passage is packing state.
Further, it is the overflow ducts include opening up around body cavity ring overflow launder, vertical on valve body wall
In the overflow pipe that valve body axially opens up, the overflow pipe is interval with multiple around valve body wall, and each overflow pipe is with overflowing
Chute connects.
For better seal, in body cavity, the first sealing ring and are respectively equipped with above and below overflow launder
Two sealing rings, the 3rd sealing ring is provided with body cavity top and remote first sealing ring；
Spout hole is always positioned between the second sealing ring and the 3rd sealing ring.
Such scheme can ensure no matter spout hole connects or cut-off state, the sealing of equipment are good with overflow ducts
It is good.
Specifically, sleeve, the drawstring with being connected at the top of sleeve that the drive device includes being connected with valve body wall, the drawing
Rope stretches out upwards to be drilled and fixes.
Accordingly, the utility model also provides a kind of hydrofracturing geodetic stress test device, including it is spaced on
Packer and lower packet, the pressurization that the upper packer includes hollow cartridge, passed through from cartridge in cavity
Pipe, the lower packet include hollow cartridge, connected between upper packer and the cartridge of lower packet by pipeline
It is logical, in addition to the control valve described in such scheme, the first pressure channel outlet of the control valve and the fluid sealant of upper packer
Cylinder is docked and connected, and the forcing pipe of second pressure channel outlet and upper packer is docked and connected.
In the experimental rig, upper and lower packer is existing equipment, its assembly method and routine techniques phase in drilling
Together, after upper and lower packer enters drilling, it is to test pressurized segment that the two, which surrounds the cavity to be formed with the wall of a borehole,.During experiment, pass through
First pressure passage up, in the cartridge of lower packet injects liquid, is added by second pressure passage via forcing pipe is past
Liquid is injected in pressure section.
Further, in addition to first pressure feeder connection the packer compression system and second pressure passage being connected
The pressurized segment pressurization acquisition system of entrance connection.
Specifically, being provided with capstan winch at drilling orifice, the drive device includes the sleeve and sleeve being connected with valve body wall
The drawstring of top connection, the drawstring stretches out upwards to be drilled and is coiled on capstan winch.
The design that the utility model passes through control valve so that the equipment of hydraulic fracturing geodetic stress is provided with pressure release work(
Can, particularly with packer easily pressurization and pressure release in the relatively low drilling of dry hole or level of ground water, can be achieved, so that stretching
The whole equipment entered in drilling can be moved up and down easily, be advantageous to the progress tested next time.
Brief description of the drawings
The utility model is described in further detail below in conjunction with the accompanying drawings.
Fig. 1 is main guide rod structure figure.
Fig. 2 is overflow valve front view.
Fig. 3 is overflow valve top view.
Fig. 4 is tube-in-tube structure figure.
Fig. 5 is control valve structure chart.
Fig. 6 is experimental rig structure chart.
Fig. 7 is upper packer structure chart.
Fig. 8 is lower packet structure chart.
In figure：1- leading rods, 2- overflow valves, 3- limited blocks, 4- elastic components, 5- sleeves, 6- drawstrings, 7- drill, and are sealed on 8-
Every device, 9- lower packets, 10- capstan winches, 11- first pressure passages, 12- second pressure passages, 13- spout holes, 21- valve bodies, 22-
Overflow launder, 23- overflow pipes, the sealing rings of 24- first, the sealing rings of 25- second, the sealing rings of 26- the 3rd, 81- cartridges, 82- add
Pressure pipe, 100- packer compression systems, 101- pressurized segments pressurization acquisition system.
Embodiment
As shown in Fig. 1~5, a kind of control valve, including leading rod 1, the first pressure passage that insertion is set in leading rod 1
11 and second pressure passage 12, the spout hole 13 connected with first pressure passage 11 that is opened up in the outer wall of leading rod 1.
Overflow valve 2 is set with the outer wall of leading rod 1 positioned at the region of spout hole 13.The overflow valve 2 includes hollow
Valve body 21, on the wall of valve body 21 insertion open up with cavity connects in valve body 21 overflow ducts.
Ring overflow launder 22 that the overflow ducts include opening up around the inner chamber of valve body 21, on the wall of valve body 21 perpendicular to valve
The overflow pipe 23 that body axially opens up.The overflow pipe 23 is interval with multiple around the wall of valve body 21, and each overflow pipe 23 is equal
Connected with overflow launder 22.
In the inner chamber of valve body 21, the first sealing ring 24 and the second sealing ring are respectively equipped with above and below overflow launder 22
25.The 3rd sealing ring 26 is provided with body cavity top and remote first sealing ring 24.
Spout hole 13 is always positioned between the second sealing ring 25 and the 3rd sealing ring 26.
The leading rod 1 is passed through from the hollow intracavitary of valve body 21, and the edge of overflow valve 2 can be driven by being connected with the overflow valve 2
The drive device that the outer wall of leading rod 1 slides.Sleeve 5 that the drive device includes be connected with the wall of valve body 21, with connecting at the top of sleeve 5
The drawstring 6 connect.The drawstring 6 stretches out drilling 7 and fixed upwards.
The overflow valve 2 along leading rod 1 move when, spout hole 13 and overflow ducts can be docked and connected or stagger cut-off.
The top of overflow valve 2, which abuts, the compressible elastomeric part 4 being sleeved on leading rod 1, and the top of elastic component 4, which abuts, to be had
The limited block 3 being fixed on leading rod 1.The elastic component is preferably spring.
As can be seen from figures 6 to 8, the present embodiment also provides a kind of hydrofracturing geodetic stress test device, including is arranged at intervals
Upper packer 8 and lower packet 9.The upper packer 8 includes hollow cartridge 81, from cartridge 81 in cavity
The forcing pipe 82 passed through.Forcing pipe lower end is with holes.The lower packet 9 includes hollow cartridge 81.Upper packer 8 is with
Pass through pipeline communication between the cartridge 81 of packer 9.
Also include the control valve described in such scheme, the outlet of first pressure passage 11 and the upper packer 8 of the control valve
Cartridge 81 be docked and connected.Second pressure passage 12 exports to be docked and connected with the forcing pipe 82 of upper packer 8.
The packer compression system 100 that also includes being connected with the entrance of first pressure passage 11, enter with second pressure passage 12
The pressurized segment pressurization acquisition system 101 of mouth connection.
Capstan winch 10 is provided with 7 apertures that drill, the drawstring 6 stretches out drilling 7 and is coiled on capstan winch 10 upwards.
After the completion of experimental rig assembling, control valve and upper and lower packer are first put into appointed part with capstan winch 10, start to try
Test, now overflow pipe 23 is not connected with spout hole 13, and pressure can be passed in upper and lower packer, makes the distending of cartridge 81.Examination
After testing end, upward rope 6, because now upper and lower packer is in distending state, hole wall is adjacent to, can not be moved, only overflow
Stream valve 2 can move up, compression spring while mobile, when on the spout hole 31 and overflow valve on leading rod 12 overflow pipe 23
During connection, the liquid in packer is flowed out in drilling from spout hole 13 via overflow pipe 23, pressure release, upper and lower packer
Slowly shrink.When upper and lower packer is no longer adjacent to hole wall, under the rebound effect of spring, overflow valve 2 moves down, overflow
Hole 13 and overflow pipe 23 stagger cut-off, and the pressure channel of upper packer 8 is isolated from the outside, can now moved experimental rig again
To next test section, continue to test.
Claims (7)
- A kind of 1. control valve, it is characterised in that：Including leading rod（1）, in leading rod（1）Interior insertion set separate the One pressure channel（11）And second pressure passage（12）, in leading rod（1）Outer wall open up with first pressure passage（11）Even Logical spout hole（13）, positioned at spout hole（13）The leading rod in region（1）Overflow valve is set with outer wall（2）, the overflow Valve（2）Including the valve body with middle cavity（21）, in valve body（21）Open up and valve body is penetrated on wall（21）Middle cavity connection Overflow ducts；The leading rod（1）From valve body（21）Hollow intracavitary pass through, the overflow valve（2）On be connected with and can drive overflow valve （2）Along leading rod（1）The drive device that outer wall slides；The overflow valve（2）Along leading rod（1）When mobile, spout hole（13）With Overflow ducts can be docked and connected or stagger cut-off；The overflow valve（2）Top abuts and is sleeved on leading rod（1）On compressible elastomeric part（4）, elastic component（4）Top is supported It is connected to and is fixed on leading rod（1）On limited block（3）.
- 2. control valve according to claim 1, it is characterised in that：The overflow ducts are included around valve body（21）Open inner chamber If ring overflow launder（22）, in valve body（21）The overflow pipe axially opened up perpendicular to valve body on wall（23）, the overflow pipe （23）Around valve body（21）Wall is interval with multiple, and each overflow pipe（23）And overflow launder（22）Connection.
- 3. control valve according to claim 2, it is characterised in that：In valve body（21）Inner chamber, positioned at overflow launder（22）Top Be respectively arranged below with the first sealing ring（24）With the second sealing ring（25）, on body cavity top and away from the first sealing ring （24）Place is provided with the 3rd sealing ring（26）；Spout hole（13）It is always positioned at the second sealing ring（25）With the 3rd sealing ring（26）Between.
- 4. control valve according to claim 1, it is characterised in that：The drive device includes and valve body（21）Wall connection Sleeve（5）With sleeve（5）The drawstring of top connection（6）, the drawstring（6）Drilling is stretched out upwards（7）It is and fixed.
- 5. a kind of hydrofracturing geodetic stress test device, including spaced upper packer（8）And lower packet（9）, institute State upper packer（8）Including hollow cartridge（81）, from cartridge（81）The forcing pipe passed through in middle cavity（82）, institute State lower packet（9）Including hollow cartridge（81）, upper packer（8）With lower packet（9）Cartridge（81）It Between pass through pipeline communication, it is characterised in that：Also include the control valve described in any one of the claims 1~4, the control valve First pressure passage（11）Outlet and upper packer（8）Cartridge（81）It is docked and connected, second pressure passage（12）Go out Mouth and upper packer（8）Forcing pipe（82）It is docked and connected.
- 6. hydrofracturing geodetic stress test device according to claim 5, it is characterised in that：Also include and first pressure Passage（11）The packer compression system of entrance connection（100）And second pressure passage（12）The pressurized segment pressurization of entrance connection Acquisition system（101）.
- 7. hydrofracturing geodetic stress test device according to claim 5, it is characterised in that：Drilling（7）At aperture Provided with capstan winch（10）, the drive device includes and valve body（21）The sleeve of wall connection（5）With sleeve（5）The drawing of top connection Rope（6）, the drawstring（6）Drilling is stretched out upwards（7）And it is coiled in capstan winch（10）On.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720411540.8U CN206694021U (en) | 2017-04-19 | 2017-04-19 | A kind of control valve and hydrofracturing geodetic stress test device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720411540.8U CN206694021U (en) | 2017-04-19 | 2017-04-19 | A kind of control valve and hydrofracturing geodetic stress test device |
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| Publication Number | Publication Date |
|---|---|
| CN206694021U true CN206694021U (en) | 2017-12-01 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720411540.8U Active CN206694021U (en) | 2017-04-19 | 2017-04-19 | A kind of control valve and hydrofracturing geodetic stress test device |
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| CN (1) | CN206694021U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106907146A (en) * | 2017-04-19 | 2017-06-30 | 中国电建集团中南勘测设计研究院有限公司 | One kind control valve and hydrofracturing geodetic stress test device |
| CN109469479A (en) * | 2018-11-30 | 2019-03-15 | 天地科技股份有限公司 | Water pressure supporing system and method |
| CN111677497A (en) * | 2020-06-28 | 2020-09-18 | 中国地质科学院地质力学研究所 | Hydrofracturing stress detection device and detecting system |
-
2017
- 2017-04-19 CN CN201720411540.8U patent/CN206694021U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106907146A (en) * | 2017-04-19 | 2017-06-30 | 中国电建集团中南勘测设计研究院有限公司 | One kind control valve and hydrofracturing geodetic stress test device |
| CN106907146B (en) * | 2017-04-19 | 2023-04-07 | 中国电建集团中南勘测设计研究院有限公司 | Control valve and hydrofracturing geodesic stress test device |
| CN109469479A (en) * | 2018-11-30 | 2019-03-15 | 天地科技股份有限公司 | Water pressure supporing system and method |
| CN111677497A (en) * | 2020-06-28 | 2020-09-18 | 中国地质科学院地质力学研究所 | Hydrofracturing stress detection device and detecting system |
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