CN107907664B - Heating and pressurizing test device and simulation method for simulating environment state in shale gas layer - Google Patents
Heating and pressurizing test device and simulation method for simulating environment state in shale gas layer Download PDFInfo
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- CN107907664B CN107907664B CN201810019618.0A CN201810019618A CN107907664B CN 107907664 B CN107907664 B CN 107907664B CN 201810019618 A CN201810019618 A CN 201810019618A CN 107907664 B CN107907664 B CN 107907664B
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- 238000012360 testing method Methods 0.000 title claims abstract description 45
- 238000010438 heat treatment Methods 0.000 title claims abstract description 34
- 238000000034 method Methods 0.000 title claims description 8
- 238000004088 simulation Methods 0.000 title claims description 8
- 239000003814 drug Substances 0.000 claims abstract description 22
- 238000004880 explosion Methods 0.000 claims abstract description 16
- 238000005474 detonation Methods 0.000 claims abstract description 10
- 239000002360 explosive Substances 0.000 claims description 27
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 17
- 239000000523 sample Substances 0.000 claims description 9
- 238000007789 sealing Methods 0.000 claims description 7
- 238000005192 partition Methods 0.000 claims description 5
- 230000000977 initiatory effect Effects 0.000 claims description 4
- 230000005484 gravity Effects 0.000 claims description 3
- 238000002347 injection Methods 0.000 claims description 3
- 239000007924 injection Substances 0.000 claims description 3
- 239000000843 powder Substances 0.000 claims 8
- 230000015572 biosynthetic process Effects 0.000 claims 5
- 230000009286 beneficial effect Effects 0.000 abstract 1
- 230000005540 biological transmission Effects 0.000 abstract 1
- 230000007613 environmental effect Effects 0.000 description 4
- 238000011065 in-situ storage Methods 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- 230000007547 defect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 230000037452 priming Effects 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
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- G—PHYSICS
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Abstract
The invention discloses a heating and pressurizing test device for simulating the internal environment state of a shale gas layer, which comprises a medicine loading chamber and a detonation device (1), a pressurizing device (2) and a manual pressure testing pump (3), wherein the medicine loading chamber and the detonation device (1) comprise a medicine loading pipe (4), an explosion transmission seat (5), a medicine pressing piston rod (6), a pipe seat (7), a detonator seat (8) and an end cover (9); the pressurizing device (2) comprises a body (14), a guide sleeve (15), a core rod (16), a load (17) and a piston (18), wherein a step hole (19) which is horizontally arranged is formed in the body (14), a side plate (20) is fixedly arranged on the left side of the body (14), the side plate (20) seals the large hole of the step hole (19), and a joint (21) which is communicated with the small hole of the step hole (19) is arranged on the right side of the body (14). The beneficial effects of the invention are as follows: compact structure, low cost, adjustable test temperature and pressure, convenient temperature and pressure adjustment, simple operation, safety and reliability.
Description
Technical Field
The invention relates to the field of development of special explosive for explosion fracturing in a shale gas layer and comprehensive performance evaluation and research thereof, in particular to a heating and pressurizing test device and a simulation method for simulating the environmental state in the shale gas layer.
Background
The Chinese shale gas resources are very rich, the exploitation of the explosion fracturing in the shale gas layer is a popular technology for developing the shale gas at present, and the environmental simulation of the shale gas layer is the basis for developing the special explosive for the explosion fracturing in the shale gas layer. The unit for researching the in-situ explosion fracturing of the oil and gas well is firstly engaged in China, a simulation experiment device for testing the comprehensive performance of the in-situ explosion fracturing explosive is established, and research literature reports are provided. The main principle of the method is to establish a large high-temperature and high-pressure environment, and the simulation test is carried out in a large container. The device generally occupies large area, equipment investment is large, and use and maintenance cost is high.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provide the heating and pressurizing test device and the simulation method for simulating the internal environment state of the shale gas layer, which have the advantages of compact structure, low cost, adjustable test temperature and pressure, convenient temperature and pressure adjustment, simple operation, safety and reliability.
The aim of the invention is achieved by the following technical scheme: the utility model provides a simulated shale gas layer internal environment state heating pressurization test device, it includes dress medicine room and detonating device, pressurizing device and manual pressure testing pump, dress medicine room and detonating device include charge pipe, booster seat, press medicine piston rod, tube socket, thunder tube seat and end cover, the charge pipe is interior to have seted up booster seat mounting hole, kidney-shaped hole and guiding hole in order from left to right, the guide hole is installed in the slip and is pressed the medicine piston rod, the left end of charge pipe is connected with end cover and thunder tube seat in order, be provided with flame detonator and tube socket in the thunder tube seat, be provided with the electric ignition tube in the tube socket, be provided with booster seat in the booster seat mounting hole, left cavity and right cavity have all been seted up to the left and right cavity, left cavity and detonator seat switch on, right cavity and kidney-shaped hole switch on all are provided with the explosive in left cavity and the right cavity, the outside of charge pipe twines there is the heating tape, the outside of charge pipe is equipped with temperature probe, temperature probe and temperature control box are connected; the pressurizing device comprises a body, a guide sleeve, a core rod, a load and a piston, wherein a step hole which is horizontally arranged is formed in the body, a side plate is fixedly arranged on the left side of the body, the side plate seals the large hole of the step hole, a connector which is communicated with the small hole of the step hole is arranged on the right side of the body, the guide sleeve is fixedly arranged at the top of the body, a through hole which is communicated with the small hole of the step hole is formed in the guide sleeve, the core rod is in clearance fit in the through hole, the core rod upwards penetrates through the guide sleeve, the load is fixedly arranged at the top of the core rod, and the piston is arranged in the large hole of the step hole; the outlet of the manual pressure test pump is connected with the joint through a pipeline; the charging chamber and the charging pipe of the detonating device are arranged on the side plate, and the pressing piston rod extends into the large hole of the step hole and is positioned at the left side of the piston.
And a screw is connected between the detonator seat and the end cover.
An annular groove is formed in the cylindrical surface of the explosion propagation seat, and a sealing ring is arranged in the annular groove.
The medicine pressing piston rod is sleeved with a sealing ring positioned in the guide hole.
And a stop valve and a pressure gauge are connected between the manual pressure testing pump and the joint.
The bottom of the body is provided with a screw plug.
The method for simulating the environmental state heating and pressurizing in the shale gas layer by using the test device comprises the following steps:
S1, repeatedly pulling and pressing a handle through a manual pressure testing pump when simulating high pressure, enabling the manual pressure testing pump to press water, enabling the water to enter a small hole of a step hole through a pipeline and a connector in sequence, enabling the pressure of the water to act on the lower end part of a core rod, enabling the core rod to upwards give a load Shi Zhouxiang force, enabling the water pressure to act on the end face of a piston, enabling the piston to move leftwards along the step hole and be pressed against a medicine pressing piston rod, and therefore forming pressure in a kidney-shaped hole, and enabling the pressure to act on explosive in a right cavity; along with the continuous water injection of the manual pressure testing pump, when the water pressure is equal to the self gravity of the load applied to the load by the core rod, the load vertically moves upwards at a uniform speed, so that the pressure in the guide hole is stable, meanwhile, the pressure in the kidney-shaped hole is also stable, the pressure in the kidney-shaped hole can be adjusted only by changing the weight of the load, and the pressure adjusting range is 0-200 MPa;
S2, setting the temperature required by the test in a temperature control box, electrifying a heating belt, heating a charging tube by the heating belt so as to increase the temperature in the kidney-shaped hole, converting a temperature signal into an electric signal in real time by a temperature probe, transmitting the electric signal to the temperature control box, stopping electrifying the heating belt when the temperature reaches the set temperature, and adjusting the temperature from room temperature to 200 ℃;
s3, detonation and explosion propagation: the electric ignition tube in the tube seat is used for igniting the flame detonator in the detonator seat, the flame detonator detonates the explosive in the left cavity, and the explosive in the right cavity is detonated after the partition plate is detonated, so that the detonation of the explosive can be realized under different temperature conditions and different pressure conditions, and meanwhile, the heating and the pressurizing of the environment state in the shale gas layer are simulated.
The invention has the following advantages: the invention has compact structure, low cost, adjustable test temperature and pressure, convenient temperature and pressure adjustment, simple operation, safety and reliability.
Drawings
FIG. 1 is a schematic diagram of the structure of the present invention;
FIG. 2 is a schematic view of the structure of the loading chamber and the priming device;
FIG. 3 is a schematic view of the structure of a charge tube;
FIG. 4 is a right side view of FIG. 3;
FIG. 5 is a schematic structural view of the booster seat;
FIG. 6 is a schematic view of the structure of the pressurizing device;
In the figure, a 1-medicine loading chamber and an initiating device, a 2-pressurizing device, a 3-manual pressure testing pump, a 4-medicine loading pipe, a 5-explosion-transmitting seat, a 6-medicine pressing piston rod, a 7-pipe seat, an 8-detonator seat, a 9-end cover, a 10-explosion-transmitting seat mounting hole, a 11-kidney-shaped hole, a 12-guiding hole, a 13-explosive, a 14-body, a 15-guiding sleeve, a 16-core rod, a 17-loading, a 18-piston, a 19-step hole, a 20-side plate, a 21-connector, a 22-screw, a 23-annular groove and a 24-sealing ring.
Detailed Description
The invention is further described below with reference to the accompanying drawings, the scope of the invention not being limited to the following:
As shown in fig. 1-6, a heating and pressurizing test device for simulating the internal environment state of a shale gas layer comprises a medicine loading chamber and a detonation device 1, a pressurizing device 2 and a manual pressure testing pump 3, wherein the medicine loading chamber and the detonation device 1 comprises a medicine loading pipe 4, an explosion-transferring seat 5, a medicine pressing piston rod 6, a pipe seat 7, a detonator seat 8 and an end cover 9, an explosion-transferring seat mounting hole 10, a waist-shaped hole 11 and a guide hole 12 are sequentially formed in the medicine loading pipe 4 from left to right, the waist-shaped hole 11 is used for simulating gap explosion transfer, and gaps of various sizes can be simulated by changing the size of the waist-shaped hole 11 in the middle of the medicine loading pipe 4. The explosive charging device is characterized in that the explosive pressing piston rod 6 is slidably mounted in the guide hole 12, the left end part of the explosive charging pipe 4 is sequentially connected with the end cover 9 and the detonator seat 8, a flame detonator and the tube seat 7 are arranged in the detonator seat 8, an electric ignition tube is arranged in the tube seat 7, the explosion-transmitting seat 5 is arranged in the explosion-transmitting seat mounting hole 10, the left cavity and the right cavity are respectively formed in the left end part and the right end part of the explosion-transmitting seat 5, the left cavity is separated from the right cavity by a partition plate, the left cavity is communicated with the detonator seat 8, the right cavity is communicated with the kidney-shaped hole 11, explosive 13 is respectively arranged in the left cavity and the right cavity, a heating belt is wound outside the explosive charging pipe 4, a temperature probe is additionally arranged outside the explosive charging pipe 4, and the temperature probe is connected with the temperature control box.
The pressurizing device 2 comprises a body 14, a guide sleeve 15, a core rod 16, a load 17 and a piston 18, wherein a step hole 19 which is horizontally arranged is formed in the body 14, the step hole 19 is a pressurizing cavity, a side plate 20 is fixedly arranged on the left side of the body 14, the side plate 20 seals the large hole of the step hole 19, a joint 21 which is communicated with the small hole of the step hole 19 is arranged on the right side of the body 14, the guide sleeve 15 is fixedly arranged at the top of the body 14, a through hole which is communicated with the small hole of the step hole 19 is formed in the guide sleeve 15, the core rod 16 is in clearance fit in the through hole, the core rod 16 upwards penetrates through the guide sleeve 15, the load 17 is fixedly arranged at the top of the core rod 16, and the piston 18 is arranged in the large hole of the step hole 19.
The outlet of the manual pressure test pump 3 is connected with the joint 21 through a pipeline, and the pipeline separates the manual pressure test pump 3 from the pressurizing device 2, so that safety isolation is realized, and the device has the characteristics of safety and reliability; the charging chamber and the charging tube 4 of the initiating device 1 are arranged on the side plate 20, and the explosive pressing piston rod 6 extends into the large hole of the step hole 19 and is positioned at the left side of the piston 18.
A screw 22 is connected between the detonator seat 8 and the end cover 9. An annular groove 23 is formed in the cylindrical surface of the explosion propagation seat 5, a sealing ring 24 is arranged in the annular groove 23, and the sealing ring 24 positioned in the guide hole 12 is sleeved on the explosive pressing piston rod 6. A stop valve and a pressure gauge are connected between the manual pressure test pump 3 and the joint 21. The bottom of the body 14 is provided with a screw plug
The method for simulating the environmental state heating and pressurizing in the shale gas layer by using the test device comprises the following steps:
S1, repeatedly pulling and pressing a handle through a manual pressure testing pump 3 when simulating high pressure, pressing water by the manual pressure testing pump 3, sequentially entering a small hole of a step hole 19 through a pipeline and a joint 21, enabling the pressure of the water to act on the lower end part of a core rod 16, enabling the core rod 16 to upwards give a load 17 Shi Zhouxiang force, enabling the water pressure to act on the end face of a piston 18, enabling the piston 18 to move leftwards along the step hole 19 and to be propped against a medicine pressing piston rod 6, and accordingly forming pressure in a kidney-shaped hole 11, and enabling the pressure to act on explosive in a right cavity; along with the continuous water injection of the manual pressure test pump 3, when the force applied by the water pressure to the load 17 through the core rod 16 is equal to the self gravity of the load 17, the load 17 moves vertically upwards at a uniform speed, so that the pressure in the guide hole 12 is stable, meanwhile, the pressure in the kidney-shaped hole 11 is also stable, at the moment, the pressure in the kidney-shaped hole 11 can be adjusted by only changing the weight of the load 17, and the pressure adjusting range is 0-200 MPa; the explosion propagation seat 5 can realize the pressure bearing of the charging tube 4, and simultaneously realize the direct explosion propagation outside the charging tube 4, thereby achieving the purpose of simplifying the explosion initiating device;
S2, setting the temperature required by the test in a temperature control box, electrifying a heating belt, heating a charging tube 4 by the heating belt, so that the temperature in a kidney-shaped hole 11 is increased, simultaneously converting a temperature signal into an electric signal in real time by a temperature probe, transmitting the electric signal to the temperature control box, stopping electrifying the heating belt when the temperature reaches the set temperature, and adjusting the temperature from room temperature to 200 ℃;
S3, detonation and explosion propagation: the electric ignition tube in the tube seat 7 is used for igniting the flame detonator in the detonator seat 8, the flame detonator detonates the explosive in the left cavity, and the explosive in the right cavity is detonated after the partition plate is detonated, so that the detonation of the explosive can be realized under different temperature conditions and different pressure conditions, and meanwhile, the heating and the pressurizing of the environment state in the shale gas layer are simulated.
Claims (7)
1. The utility model provides a simulation shale gas layer internal environment state heating pressurization test device which characterized in that: the explosion-proof type electric detonator comprises a powder charging chamber, an explosion-proof device (1), a pressurizing device (2) and a manual pressure testing pump (3), wherein the powder charging chamber and the explosion-proof device (1) comprises a powder charging pipe (4), an explosion-proof seat (5), a powder pressing piston rod (6), a pipe seat (7), a detonator seat (8) and an end cover (9), a powder charging seat mounting hole (10), a kidney-shaped hole (11) and a guide hole (12) are sequentially formed in the powder charging pipe (4) from left to right, the powder pressing piston rod (6) is slidably mounted in the guide hole (12), the end cover (9) and the detonator seat (8) are sequentially connected to the left end part of the powder charging pipe (4), a flame detonator and the pipe seat (7) are arranged in the detonator seat (8), an electric ignition pipe is arranged in the pipe seat (7), a left cavity and a right cavity and a left cavity and a right cavity are respectively formed in the explosion-proof seat mounting hole (10), the left cavity and the right cavity are separated from the left cavity and the seat (8) through a partition plate, the right cavity is communicated with the kidney-shaped hole (11), the temperature of the probe and the temperature of the explosive charging seat (4) is connected to the outside, and the temperature control probe (13) is arranged in the heating chamber, and the temperature control chamber is connected to the outside; the pressurizing device (2) comprises a body (14), a guide sleeve (15), a core rod (16), a load (17) and a piston (18), wherein a step hole (19) which is horizontally arranged is formed in the body (14), a side plate (20) is fixedly arranged on the left side of the body (14), the side plate (20) seals the large hole of the step hole (19), a joint (21) which is communicated with the small hole of the step hole (19) is arranged on the right side of the body (14), the guide sleeve (15) is fixedly arranged at the top of the body (14), a through hole which is communicated with the small hole of the step hole (19) is formed in the guide sleeve (15), the core rod (16) upwards penetrates through the guide sleeve (15), and the load (17) is fixedly arranged at the top of the core rod (16); the load (17) provides pressure to the core bar (16), which pressure is adjusted by changing the weight of the load (17); the piston (18) is arranged in the large hole of the step hole (19); the outlet of the manual pressure testing pump (3) is connected with a joint (21) through a pipeline; the charging chamber and the charging tube (4) of the initiating device (1) are arranged on the side plate (20), and the explosive pressing piston rod (6) stretches into the large hole of the step hole (19) and is positioned at the left side of the piston (18).
2. The simulated shale gas formation internal environment state heating and pressurizing test device according to claim 1, wherein: a screw (22) is connected between the detonator seat (8) and the end cover (9).
3. The simulated shale gas formation internal environment state heating and pressurizing test device according to claim 1, wherein: an annular groove (23) is formed in the cylindrical surface of the explosion propagation seat (5), and a sealing ring (24) is arranged in the annular groove (23).
4. The simulated shale gas formation internal environment state heating and pressurizing test device according to claim 1, wherein: the medicine pressing piston rod (6) is sleeved with a sealing ring (24) positioned in the guide hole (12).
5. The simulated shale gas formation internal environment state heating and pressurizing test device according to claim 1, wherein: and a stop valve and a pressure gauge are connected between the manual pressure testing pump (3) and the joint (21).
6. The simulated shale gas formation internal environment state heating and pressurizing test device according to claim 1, wherein: the bottom of the body (14) is provided with a screw plug.
7. The method for simulating the heating and pressurizing of the environment state in the shale gas layer by using the test device according to any one of claims 1-6, which is characterized by comprising the following steps: it comprises the following steps:
S1, repeatedly pulling and pressing a handle through a manual pressure testing pump (3) when simulating high pressure, pressing water through the manual pressure testing pump (3), enabling the water to enter a small hole of a step hole (19) through a pipeline and a joint (21), enabling the pressure of the water to act on the lower end part of a core rod (16), enabling the core rod (16) to upwards apply a load (17) Shi Zhouxiang force, enabling the water pressure to act on the end face of a piston (18), enabling the piston (18) to move leftwards along the step hole (19) and to be pressed against a medicine pressing piston rod (6), and accordingly forming pressure in a kidney-shaped hole (11), and enabling the pressure to act on explosive in a right chamber; along with the continuous water injection of the manual pressure testing pump (3), when the water pressure is equal to the self gravity of the load (17) through the core rod (16), the load (17) vertically moves upwards at a uniform speed, so that the pressure in the guide hole (12) is stable, meanwhile, the pressure in the kidney-shaped hole (11) is also stable, at the moment, the pressure in the kidney-shaped hole (11) can be adjusted by only changing the weight of the load (17), and the pressure adjusting range is 0-200 MPa;
S2, setting the temperature required by the test in a temperature control box, electrifying a heating belt, heating a charging tube (4) by the heating belt, so that the temperature in a kidney-shaped hole (11) is increased, simultaneously converting a temperature signal into an electric signal in real time by a temperature probe, transmitting the electric signal to the temperature control box, stopping electrifying the heating belt when the temperature reaches the set temperature, and adjusting the temperature from room temperature to 200 ℃;
S3, detonation and explosion propagation: the electric ignition tube in the tube seat (7) is used for igniting the flame detonator in the detonator seat (8), the flame detonator detonates the explosive in the left cavity, and the explosive in the right cavity is detonated after the partition plate is detonated, so that the detonation of the explosive can be realized under different temperature conditions and different pressure conditions, and meanwhile, the heating and the pressurizing of the environment state in the shale gas layer are simulated.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201810019618.0A CN107907664B (en) | 2018-01-09 | 2018-01-09 | Heating and pressurizing test device and simulation method for simulating environment state in shale gas layer |
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| CN201810019618.0A CN107907664B (en) | 2018-01-09 | 2018-01-09 | Heating and pressurizing test device and simulation method for simulating environment state in shale gas layer |
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| CN109374496B (en) * | 2018-10-23 | 2020-04-24 | 中国石油大学(北京) | Experimental device for be used for injecting alloy into rock core sample |
| CN110306966B (en) * | 2019-07-22 | 2024-06-21 | 屈波 | Liquid explosive injection and in-situ explosion fracturing device for oil-gas cased well |
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| CN202140076U (en) * | 2011-07-25 | 2012-02-08 | 西安石油大油气科技有限公司 | Experimental device for laboratory researches of explosion in oil field layers |
| CN205958497U (en) * | 2016-08-11 | 2017-02-15 | 西安物华巨能***器材有限责任公司 | Airtight testing arrangement of gaseous fracturing bench test of high energy |
| CN207703849U (en) * | 2018-01-09 | 2018-08-07 | 四川华川工业有限公司 | Ambient condition temperature-pressure experimental rig in a kind of simulation shale gas-bearing formation |
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| DE1446965C1 (en) * | 1964-09-20 | 1971-09-16 | Nitrochemie Ges Mit Beschraenk | Method and device for simulating the pressure and temperature of explosions |
| US5780764A (en) * | 1996-01-11 | 1998-07-14 | The Ensign-Bickford Company | Booster explosive devices and combinations thereof with explosive accessory charges |
| US20050183610A1 (en) * | 2003-09-05 | 2005-08-25 | Barton John A. | High pressure exposed detonating cord detonator system |
| CN101533001B (en) * | 2009-04-20 | 2012-05-30 | 昆明理工大学 | Device for testing underwater brisance of explosive |
| CN102226673A (en) * | 2011-04-29 | 2011-10-26 | 昆明理工大学 | Miniature exploder for testing deep sea pressure resistance of explosive |
| CN102330547A (en) * | 2011-09-23 | 2012-01-25 | 西安石油大学 | Micro-fracture explosion propagation device for interlayer explosion laboratory study |
| CN204008638U (en) * | 2014-08-15 | 2014-12-10 | 安徽理工大学 | Wellhole blasting analog simulation experimental provision |
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| CN202140076U (en) * | 2011-07-25 | 2012-02-08 | 西安石油大油气科技有限公司 | Experimental device for laboratory researches of explosion in oil field layers |
| CN205958497U (en) * | 2016-08-11 | 2017-02-15 | 西安物华巨能***器材有限责任公司 | Airtight testing arrangement of gaseous fracturing bench test of high energy |
| CN207703849U (en) * | 2018-01-09 | 2018-08-07 | 四川华川工业有限公司 | Ambient condition temperature-pressure experimental rig in a kind of simulation shale gas-bearing formation |
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