CN213331053U - Shale gas repeated fracturing temporary plugging simulation experiment device - Google Patents
Shale gas repeated fracturing temporary plugging simulation experiment device Download PDFInfo
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- CN213331053U CN213331053U CN202022430656.0U CN202022430656U CN213331053U CN 213331053 U CN213331053 U CN 213331053U CN 202022430656 U CN202022430656 U CN 202022430656U CN 213331053 U CN213331053 U CN 213331053U
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Abstract
The utility model relates to a shale gas repeated fracturing temporary blocking simulation experiment device belongs to oil gas yield increase transformation technical field. The utility model mainly overcomes weak point among the prior art, provides a stifled simulation experiment device is temporarily fractured to shale gas repeated fracturing, including crack water conservancy diversion room, crack water conservancy diversion indoor is equipped with wedge rock plate group and two clamp plates, be equipped with heating coil in the clamp plate, be equipped with the rock plate fixer that is used for fixed two clamp plates on the crack water conservancy diversion room. The utility model discloses fracture water conservancy diversion room front and back face is the transparent plate, can observe the indoor fracturing fluid of fracture water conservancy diversion condition of flowing and block up the effect temporarily, and the fracture that is formed by upper and lower rock plate is the wedge, accords with actual stratum condition more, establishes heating coil in the temperature heater, and steerable fracture water conservancy diversion room temperature blocks up the effect temporarily under the simulation stratum temperature condition, and pressure sensor is established to the inlet end, can monitor entrance point pressure, pressure when real-time measurement fracturing fluid breaks through the temporary plugging agent.
Description
Technical Field
The utility model relates to a shale gas repeated fracturing temporary blocking simulation experiment device belongs to oil gas yield increase transformation technical field.
Background
Shale gas is an unconventional resource with huge reserves, and can be effectively exploited and utilized mainly by relying on volume fracturing to form a fracture network. For reservoirs which have the potential of economic transformation and have too fast capacity reduction after primary yield increase transformation, repeated fracturing can effectively improve the yield of oil and gas wells, restore the network flow conductivity of primary fracturing fractures, construct new fractures and channels between shafts, form more complex fracture networks and improve the yield and the recovery ratio of shale reservoirs. The temporary blocking steering repeated fracturing technology is used as an important technical means for shale gas exploitation, the technical principle is that temporary blocking is carried out on an original fracture network of a reservoir by adding a temporary blocking agent, when secondary fracturing is carried out, when the blocking pressure of a temporary blocking point in a hydraulic fracture is larger than the fracture initiation pressure of a new fracture, the hydraulic fracture can overcome a stress field to realize steering extension in the fracture, so that a more complex fracture network is formed, and the original fracture can also recover the flow conductivity after the temporary blocking agent is degraded. The factors such as the plugging length and the width of the temporary plugging agent in the crack are important for the temporary plugging effect, so that an experimental device is needed to simulate the temporary plugging of the crack, and a reference is provided for the optimal design of the temporary plugging steering.
Most of the existing temporary plugging simulation experiment devices adopt API standard diversion rooms, but the equipment cannot intuitively simulate stratum conditions. Patent CN107355206A & A shale gas horizontal well repeated fracturing temporary plugging critical pressure test method & provides a temporary plugging device composed of parallel plates, but the device can not visually simulate the temporary plugging condition of a real stratum fracture form. Patent CN208350745U simulation experiment device for transparent parallel plate fracture device and temporary blocking branch fracture can visually observe temporary blocking effect of temporary blocking agent, but the device does not consider stratum temperature and can not simulate temporary blocking condition under stratum temperature condition.
SUMMERY OF THE UTILITY MODEL
The utility model discloses overcome the weak point among the prior art, provide a shale gas repeated fracturing temporary blocking simulation experiment device under can visual simulation stratum crack shape and the temperature condition.
The utility model provides a technical scheme that above-mentioned technical problem provided is: the utility model provides a shale gas repeated fracturing temporary blocking simulation experiment device, includes crack water conservancy diversion room, crack water conservancy diversion indoor wedge rock plate group and two clamp plates of being equipped with, be equipped with heating coil in the clamp plate, be equipped with the rock plate fixer that is used for fixed two clamp plates on the crack water conservancy diversion room.
The further technical scheme is that the wedge-shaped rock plate group consists of two rock plates with two inclined ends.
The further technical scheme is that a rubber ring is arranged between the pressing plate and the rock plate.
The further technical scheme is that a temperature sensor is arranged on the pressing plate, and a pressure sensor is arranged on the crack flow guide chamber.
The further technical scheme is that transparent plates are arranged on two sides of the crack diversion chamber.
The utility model discloses following beneficial effect has: the utility model discloses fracture water conservancy diversion room front and back face is the transparent plate, can observe the indoor fracturing fluid of fracture water conservancy diversion condition of flowing and block up the effect temporarily, and the fracture that is formed by upper and lower rock plate is the wedge, accords with actual stratum condition more, establishes heating coil in the temperature heater, and steerable fracture water conservancy diversion room temperature blocks up the effect temporarily under the simulation stratum temperature condition, and pressure sensor is established to the inlet end, can monitor entrance point pressure, pressure when real-time measurement fracturing fluid breaks through the temporary plugging agent.
Drawings
FIG. 1 is a schematic view of the overall structure of the device of the present invention;
fig. 2 is a front view of the device of the present invention;
fig. 3 is a cross-sectional view of the device of the present invention.
Shown in the figure: 1-crack diversion chamber, 2-rock plate, 3-rubber ring, 4-pressing plate, 5-temporary plugging agent, 6-rock plate fixer, 101-transparent plate, 102-liquid inlet, 103-liquid outlet, 104-pressure measuring port, 105-pressure sensor and 401-temperature sensor interface.
Detailed Description
The present invention will be further described with reference to the following examples and accompanying drawings.
As shown in fig. 1-3, the utility model discloses a shale gas repeated fracturing temporary plugging simulation experiment device, including crack guiding chamber 1 with cavity, be equipped with wedge rock plate group and be located two clamp plates 4 of wedge rock plate group up-and-down terminal surface in the cavity, wherein the both ends are equipped with inlet 102, the liquid outlet 103 that communicates with the cavity respectively about crack guiding chamber 1, the wedge rock plate comprises two both ends are the rock plate 2 of oblique form; the pressing plate 4 is provided with an inclined top part positioned in the cavity, and a cavity heating coil for the crack diversion chamber 1 is arranged in the inclined top part, so that the temporary plugging effect under the formation temperature condition is simulated; a rock plate fixer 6 for fixing two pressing plates 4 is arranged on the crack flow guiding chamber 1, and a pressure measuring port 104 for installing a pressure sensor 105 is arranged on the crack flow guiding chamber 1; and a temperature sensor interface 401 for mounting a temperature sensor is arranged on the pressure plate 4.
As shown in fig. 3, in order to improve the sealing performance of the inner cavity of the crack diversion chamber 1, a rubber ring 3 is preferably arranged between the pressing plate 4 and the rock plate 2; the rubber ring 3 is heated to expand and seal the inner cavity of the crack diversion chamber 1.
As shown in fig. 1, in order to facilitate observation of the temporary plugging condition of the crack, a preferred embodiment is that transparent plates 101 are arranged on two sides of the crack diversion chamber 1; thus, the temporary plugging of the crack can be observed through the transparent plate 101.
The utility model discloses when carrying out the experiment, at first, with rock plate 2, rubber ring 3, clamp plate ware 4 packs into crack water conservancy diversion room 1's inner chamber in proper order, it is fixed with it to reuse rock plate fixer 6, then insert pressure sensor 105 behind the pressure measurement port 104 with the connection computer, and connect the computer behind temperature sensor access temperature sensor interface 401, heat the inner chamber of crack water conservancy diversion room 1 to the stratum temperature through heating coil, rubber ring 3 thermal expansion sealing device, it contains stifled agent fracturing fluid temporarily to go into from inlet 102 pump, just can form the shutoff in the middle of two upper and lower rock plates 2 after the pump goes into temporary plugging agent 5, the temporary plugging condition of crack is observed to accessible transparent plate 101, can observe temporary plugging pressure variation in the crack through the computer.
The above description is not intended to limit the present invention in any way, and the present invention has been disclosed in the above embodiments, but is not intended to be limited thereto, and any person skilled in the art can make some changes or modify equivalent embodiments with equivalent changes when using the technical content disclosed above without departing from the technical scope of the present invention.
Claims (5)
1. The utility model provides a shale gas repeated fracturing temporary blocking simulation experiment device, includes crack water conservancy diversion room (1), its characterized in that, be equipped with wedge rock plate group and two clamp plates (4) in crack water conservancy diversion room (1), be equipped with heating coil in clamp plate (4), be equipped with rock plate fixer (6) that are used for fixed two clamp plates (4) on crack water conservancy diversion room (1).
2. The shale gas repeated fracturing temporary plugging simulation experiment device according to claim 1, wherein the wedge-shaped rock plate group is composed of two rock plates (2) with two inclined ends.
3. The shale gas repeated fracturing temporary plugging simulation experiment device according to claim 2, wherein a rubber ring (3) is arranged between the pressing plate (4) and the rock plate (2).
4. The shale gas repeated fracturing temporary plugging simulation experiment device according to claim 1, wherein a temperature sensor is arranged on the pressing plate (4), and a pressure sensor (105) is arranged on the fracture diversion chamber (1).
5. The shale gas repeated fracturing temporary plugging simulation experiment device according to claim 1, wherein transparent plates (101) are arranged on two sides of the fracture diversion chamber (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022430656.0U CN213331053U (en) | 2020-10-28 | 2020-10-28 | Shale gas repeated fracturing temporary plugging simulation experiment device |
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| CN202022430656.0U CN213331053U (en) | 2020-10-28 | 2020-10-28 | Shale gas repeated fracturing temporary plugging simulation experiment device |
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| CN213331053U true CN213331053U (en) | 2021-06-01 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114320208A (en) * | 2022-03-11 | 2022-04-12 | 四川圣诺油气工程技术服务有限公司 | Self-tightening sealing structure of gas well wellhead visualization device |
| CN115614025A (en) * | 2022-10-21 | 2023-01-17 | 西南石油大学 | Device and method for measuring deflection angle of rock interface of transition facies of crack crossing sea and land |
-
2020
- 2020-10-28 CN CN202022430656.0U patent/CN213331053U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114320208A (en) * | 2022-03-11 | 2022-04-12 | 四川圣诺油气工程技术服务有限公司 | Self-tightening sealing structure of gas well wellhead visualization device |
| CN114320208B (en) * | 2022-03-11 | 2022-05-06 | 四川圣诺油气工程技术服务有限公司 | Gas well head visualization device's self-tightening sealing structure |
| CN115614025A (en) * | 2022-10-21 | 2023-01-17 | 西南石油大学 | Device and method for measuring deflection angle of rock interface of transition facies of crack crossing sea and land |
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