CN203422307U - Rapid testing device for permeability of compact rock - Google Patents
Rapid testing device for permeability of compact rock Download PDFInfo
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- CN203422307U CN203422307U CN201320447580.XU CN201320447580U CN203422307U CN 203422307 U CN203422307 U CN 203422307U CN 201320447580 U CN201320447580 U CN 201320447580U CN 203422307 U CN203422307 U CN 203422307U
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- 239000011435 rock Substances 0.000 title claims abstract description 71
- 238000012360 testing method Methods 0.000 title claims abstract description 45
- 230000035699 permeability Effects 0.000 title claims abstract description 42
- 238000011144 upstream manufacturing Methods 0.000 claims abstract description 79
- 238000005259 measurement Methods 0.000 claims description 17
- 230000007246 mechanism Effects 0.000 claims description 13
- 230000008859 change Effects 0.000 abstract description 2
- 230000009467 reduction Effects 0.000 description 8
- 238000000034 method Methods 0.000 description 7
- 230000035945 sensitivity Effects 0.000 description 3
- 238000011161 development Methods 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 239000004576 sand Substances 0.000 description 2
- 238000000429 assembly Methods 0.000 description 1
- 230000000712 assembly Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000001684 chronic effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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Abstract
The utility model discloses a quick testing arrangement of tight rock permeability, including rock core clamping device (103) and measuring device (102), measuring device (102) are including first upper reaches room (12) and second upper reaches room (13) with rock core clamping device (103) intercommunication in proper order, still include first low reaches room (15) and second low reaches room (14) with rock core clamping device (103) intercommunication in proper order, and the volume of second upper reaches room (13) is less than the volume of first upper reaches room (12), and the volume of second low reaches room (14) is less than the volume of first low reaches room (15). The second upstream chamber and the second downstream chamber of the rapid tight rock permeability testing device are small in size, so that the pressure is sensitive to the change of the gas volume, a certain pressure difference can be rapidly established between the upstream end and the downstream end of the rock core, the time required by testing is shortened, and an accurate measuring result is obtained.
Description
Technical field
The utility model relates to the exploratory development technical field of unconventional oil gas, particularly a kind of device for quick testing for shale, the test of tight sand isoperm.
Background technology
Shale gas, compact sandstone gas belong to unconventional rock gas, and the reservoir pore space of its rock gas mainly be take nanoscale as main, have low hole, hypotonic feature.Permeability be shale gas, compact sandstone gas favo(u)rable target district preferably, one of the key parameter of evaluating reservoir and capability forecasting.Therefore,, how accurately the permeability of Quick Measurement shale or tight sand has important practical significance to exploratory development.
The permeability method of testing of conventional sandstone is mainly steady state method: allow the upstream and downstream end of Sandstone Cores under stable pressure reduction, fluid can form stable flow velocity as gas, water during by rock core, utilizes Darcy formula to calculate permeability.Growth nanoaperture due to compact rock cores such as shale, tight sands, there is low hole, the feature such as hypotonic, fluid is very little by the flow of rock core, and form and to stablize required chronic of the flow velocity of pressure reduction, the time that often needs several thoughtful some months, sealing requirements height and the test condition of instrument are had to very harsh requirement.The permeability test of the compacted rock that therefore, steady state method can be suitable for completely.
Utility model content
In order to solve existing testing apparatus, be not suitable for measuring the problem of compacted rock permeability, the utility model provides a kind of compacted rock permeability device for quick testing, the second upstream chamber that this compacted rock permeability device for quick testing arranges and the volume of the second downstream chamber are little, the sensitivity that pressure is changed with gas volume, therefore can allow fast rock core upstream and downstream end set up certain pressure reduction, shorten the required time of test, and obtain measurement result accurately.
The utility model for solving the technical scheme of its technical matters employing is: a kind of compacted rock permeability device for quick testing, comprises measurement mechanism and core clamping device; Core clamping device comprises core holding unit, when core holding unit clamping column rock core, rock core is subject to pressure radially, and forms respectively first sealed cavity corresponding with one end of rock core and second sealed cavity corresponding with the other end of rock core in the two ends of core holding unit; Measurement mechanism comprises the first upstream chamber, the second upstream chamber, the first downstream chamber and the second downstream chamber, the first upstream chamber can be communicated with the second upstream chamber, the second upstream chamber can be communicated with the first sealed cavity, the first downstream chamber can be communicated with the second downstream chamber, and the second downstream chamber can be communicated with the second sealed cavity.
The volume of the second upstream chamber is less than the volume of the first upstream chamber, and the volume of the second downstream chamber is less than the volume of the first downstream chamber.
The volume of the second upstream chamber be the volume of the 5～10%, second downstream chamber of the volume of the first upstream chamber be the first downstream chamber volume 5～10%.
The volume of the volume of the first upstream chamber and the first downstream chamber is 50～100ml, and the volume of the volume of the second upstream chamber and the second downstream chamber is 5～10ml.
Described compacted rock permeability device for quick testing also includes feeder, and feeder can be communicated with the first upstream chamber, and the first upstream chamber can be communicated with the first downstream chamber.
Between the first upstream chamber and the second upstream chamber, be provided with the 3rd valve switch, between the second upstream chamber and the first sealed cavity, be provided with the 4th valve switch.
Between the first downstream chamber and the second downstream chamber, be provided with the 5th valve switch, the first downstream chamber is also connected with the 6th valve switch for pressure release.
Measurement mechanism also comprises differential pressure pickup, and one end of differential pressure pickup is connected between the second upstream chamber and the first sealed cavity, and the other end of differential pressure pickup is connected between the second downstream chamber and the second sealed cavity.
The second upstream chamber and the second downstream chamber are all connected with pressure transducer.
Described compacted rock permeability device for quick testing also comprises data acquisition and the treating apparatus being connected with measurement mechanism.
The beneficial effects of the utility model are: the second upstream chamber that this compacted rock permeability device for quick testing arranges and the volume of the second downstream chamber are little, the sensitivity that pressure is changed with gas volume, therefore can allow fast rock core upstream and downstream end set up certain pressure reduction, shorten the required time of test, and obtain measurement result accurately.
Accompanying drawing explanation
Below in conjunction with accompanying drawing, compacted rock permeability device for quick testing described in the utility model is described in further detail.
Fig. 1 is the structural representation of compacted rock permeability device for quick testing.
Fig. 2 is the primary structure schematic diagram in compacted rock permeability device for quick testing.
Fig. 3 is the structural representation of core holding unit.
1. first valve switchs wherein, 2. second valve door switch, 3. the 3rd valve switch, 4. the 4th valve switch, 5. the 5th valve switch, 6. the 6th valve switch, 7. pressure transducer, 8. pressure transducer, 9. differential pressure pickup, 10. pressure transducer, 11. pressure transducers, 12. first upstream chamber, 13. second upstream chamber, 14. second downstream chamber, 15. first downstream chamber, 16. core holding units, 161. first sealed cavities, 162. second sealed cavities, 163. toroidal cavity, 164. rubber gum covers, 17. rock cores, 18. pressue devices, 19. gas cylinders, 20. computing machines, 101. feeder, 102. measurement mechanism, 103. core clamping device.
Embodiment
Below in conjunction with accompanying drawing, compacted rock permeability device for quick testing described in the utility model is elaborated.A permeability device for quick testing, comprises measurement mechanism 102 and core clamping device 103; Core clamping device 103 comprises core holding unit 16, when core holding unit 16 clamping column rock core 17, rock core 17 is subject to pressure radially, and forms respectively first sealed cavity 161 corresponding with one end of rock core 17 and second sealed cavity 162 corresponding with the other end of rock core 17 in the two ends of core holding unit 16; Measurement mechanism 102 comprises the first upstream chamber 12, the second upstream chamber 13, the first downstream chamber 15 and the second downstream chamber 14, the first upstream chamber 12 can be communicated with the second upstream chamber 13, the second upstream chamber 13 can be communicated with the first sealed cavity 161, the first downstream chamber 15 can be communicated with the second downstream chamber 14, the second downstream chamber 14 can be communicated with the second sealed cavity 162, as depicted in figs. 1 and 2.
The compacted rock sample that rock core 17 is piston-shaped, by 18 pairs of rock cores 17 of pressue device, apply certain confined pressure, if the diameter of rock core is 2.5cm, maximum confined pressure can reach 70MPa, even if rock core 17 is subject to pressure radially, pressure transducer 11 is for monitoring the size of applied confined pressure.The volume of the second upstream chamber 13 is much smaller than the volume of the first upstream chamber 12, and the volume of the second downstream chamber 14 is much smaller than the volume of the first downstream chamber 15.The upstream extremity of rock core 17 is corresponding with the first sealed cavity 161, the downstream end of rock core 17 is corresponding with the second sealed cavity 162, the effect of the first large upstream chamber 12 and the first large downstream chamber 15 is in order to allow fast the upstream extremity of rock core 17 and the pressure that downstream end reaches certain balance, because shale is very fine and close, gas permeability process is very slow, the volume of the second upstream chamber 13 and the second downstream chamber 14 is little, the sensitivity that pressure changes with gas volume, can allow fast upstream extremity and the downstream end of rock core set up certain pressure reduction, thereby shorten the required time of test, improve testing efficiency, in addition, can also improve the precision of measurement.By collecting the pressure delta data of the second upstream chamber 13 and the second downstream chamber 14, can calculate the permeability value of compacted rock.The complete difference of method of the test of this compacted rock permeability device for quick testing and the steady state method permeability of existing conventional sandstone are tested part and are also, this device can also utilize the speed of the pressure reduction rate of change of upstream chamber and downstream chamber to calculate the unstable state method permeability of permeability.
In order realizing, to shorten the required time of test, to improve the object of testing efficiency.The volume of the second upstream chamber 13 be the volume of the 5～10%, second downstream chamber 14 of the volume of the first upstream chamber 12 be the first downstream chamber 15 volume 5～10%.If the volume of the volume of the first upstream chamber 12 and the first downstream chamber 15 is 50～100ml, the volume of the volume of the second upstream chamber 13 and the second downstream chamber 14 is 5～10ml.In the present embodiment, the volume of the volume of the first upstream chamber 12 and the first downstream chamber 15 is 50ml, and the volume of the volume of the second upstream chamber 13 and the second downstream chamber 14 is 5ml.
Described compacted rock permeability device for quick testing also includes feeder 101, and feeder 101 can be communicated with the first upstream chamber 12, and the first upstream chamber 12 can be communicated with the first downstream chamber 15.As shown in Figure 2, feeder 101 comprises gas cylinder 19, gas cylinder 19 can be communicated with the first upstream chamber 12, gas cylinder 19 is also connected with pressure transducer 7, between gas cylinder 19 and the first upstream chamber 12, be provided with between the first valve switch 1, the first upstream chamber 12 and the first downstream chamber 15 and be provided with second valve door switch 2.
In addition, between the first upstream chamber 12 and the second upstream chamber 13, be provided with between the 3rd valve switch 3, the second upstream chamber 13 and the first sealed cavity 161 and be provided with the 4th valve switch 4.Between the first downstream chamber 15 and the second downstream chamber 14, be provided with the 5th valve switch 5, the first downstream chamber 15 and be also connected with the 6th valve switch 6 for pressure release, as shown in Figure 2.
The second upstream chamber 13 and the second downstream chamber 14 are all connected with pressure transducer, as being connected with for measuring pressure transducer 8, the second downstream chamber 14 of the second upstream chamber 13 internal pressures, the second upstream chamber 13 is connected with for measuring the pressure transducer 10 of second downstream chamber's 14 internal pressures.
In addition, core holding unit 16 is also connected with pressue device 18 and pressure transducer 11, in core holding unit 16, there is toroidal cavity 163, as shown in Figure 3, after core holding unit 16 clamping rock cores 17, by to the interior injection highly pressurised liquid of toroidal cavity 163, can realize the radial force of rock core 17, between liquid and rock core 17, there is rubber gum cover 164 mutually to isolate.Pressue device 18 can be hydraulic cylinder, and pressure transducer 11 can detect the confined pressure of rock core 17.
Described compacted rock permeability device for quick testing also comprises data acquisition and the treating apparatus being connected with measurement mechanism 102.This data acquisition and treating apparatus comprise data line, computing machine 20, and this data acquisition and treating apparatus are used for test data of experiment collection, process and provide report.Pressure transducer 7, pressure transducer 8, differential pressure pickup 9, pressure transducer 10 and pressure transducer 11 all can send to the data that monitor computing machine 20, the first valve switchs 1, second valve door switch 2, the 3rd valve switch 3, the 4th valve switch 4, the 5th valve switch 5 and the 6th valve switch 6 all can be controlled or manually be controlled by computing machine 20.
The above; be only specific embodiment of the utility model, can not limit the scope that utility model is implemented with it, so the displacement of its equivalent assemblies; or the equivalent variations of doing according to the utility model scope of patent protection and modification, all should still belong to the category that this patent is contained.
Claims (10)
1. a compacted rock permeability device for quick testing, is characterized in that, described compacted rock permeability device for quick testing comprises measurement mechanism (102) and core clamping device (103);
Core clamping device (103) comprises core holding unit (16), when core holding unit (16) clamping column rock core (17), rock core (17) is subject to pressure radially, and forms respectively first sealed cavity (161) corresponding with one end of rock core (17) and second sealed cavity (162) corresponding with the other end of rock core (17) in the two ends of core holding unit (16);
Measurement mechanism (102) comprises the first upstream chamber (12), the second upstream chamber (13), the first downstream chamber (15) and the second downstream chamber (14), the first upstream chamber (12) can be communicated with the second upstream chamber (13), the second upstream chamber (13) can be communicated with the first sealed cavity (161), the first downstream chamber (15) can be communicated with the second downstream chamber (14), and the second downstream chamber (14) can be communicated with the second sealed cavity (162).
2. compacted rock permeability device for quick testing according to claim 1, is characterized in that: the volume of the second upstream chamber (13) is less than the volume of the first upstream chamber (12), and the volume of the second downstream chamber (14) is less than the volume of the first downstream chamber (15).
3. compacted rock permeability device for quick testing according to claim 2, it is characterized in that: the volume of the second upstream chamber (13) be the volume of the 5～10%, second downstream chamber (14) of the volume of the first upstream chamber (12) be the first downstream chamber (15) volume 5～10%.
4. compacted rock permeability device for quick testing according to claim 2, it is characterized in that: the volume of the volume of the first upstream chamber (12) and the first downstream chamber (15) is 50～100ml, the volume of the volume of the second upstream chamber (13) and the second downstream chamber (14) is 5～10ml.
5. compacted rock permeability device for quick testing according to claim 2, it is characterized in that: described compacted rock permeability device for quick testing also includes feeder (101), feeder (101) can be communicated with the first upstream chamber (12), and the first upstream chamber (12) can be communicated with the first downstream chamber (15).
6. compacted rock permeability device for quick testing according to claim 2, it is characterized in that: between the first upstream chamber (12) and the second upstream chamber (13), be provided with the 3rd valve switch (3), between the second upstream chamber (13) and the first sealed cavity (161), be provided with the 4th valve switch (4).
7. compacted rock permeability device for quick testing according to claim 2, it is characterized in that: between the first downstream chamber (15) and the second downstream chamber (14), be provided with the 5th valve switch (5), the first downstream chamber (15) is also connected with the 6th valve switch (6) for pressure release.
8. compacted rock permeability device for quick testing according to claim 2, it is characterized in that: measurement mechanism (102) also comprises differential pressure pickup (9), one end of differential pressure pickup (9) is connected between the second upstream chamber (13) and the first sealed cavity (161), and the other end of differential pressure pickup (9) is connected between the second downstream chamber (14) and the second sealed cavity (162).
9. compacted rock permeability device for quick testing according to claim 2, is characterized in that: the second upstream chamber (13) and the second downstream chamber (14) are all connected with pressure transducer.
10. compacted rock permeability device for quick testing according to claim 2, is characterized in that: described compacted rock permeability device for quick testing also comprises data acquisition and the treating apparatus being connected with measurement mechanism (102).
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| Application Number | Priority Date | Filing Date | Title |
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| CN201320447580.XU CN203422307U (en) | 2013-07-25 | 2013-07-25 | Rapid testing device for permeability of compact rock |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201320447580.XU CN203422307U (en) | 2013-07-25 | 2013-07-25 | Rapid testing device for permeability of compact rock |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103926184A (en) * | 2014-04-23 | 2014-07-16 | 中国海洋石油总公司 | Detection method for gas logging porosity of core and detection device thereof |
| CN103969165A (en) * | 2014-04-30 | 2014-08-06 | 东北大学 | Device and method for simultaneously testing permeability of compact rocks under transient state and steady state |
| CN104568694A (en) * | 2014-12-19 | 2015-04-29 | 西南石油大学 | Method for testing gas-water relative permeability of dense core |
| CN104964905A (en) * | 2015-07-07 | 2015-10-07 | 中国矿业大学 | Tectonic coal permeability tester |
| CN106769684A (en) * | 2016-12-01 | 2017-05-31 | 中国石油天然气股份有限公司 | Shale Gas Diffusion Capability Test System |
| CN109490119A (en) * | 2018-12-13 | 2019-03-19 | 中国科学院武汉岩土力学研究所 | A kind of determination method of rock material damage variable |
| CN110702586A (en) * | 2019-11-05 | 2020-01-17 | 清华大学 | Method and device for measuring permeability of rock core |
| CN111577267A (en) * | 2020-05-15 | 2020-08-25 | 重庆科技学院 | Reservoir sensitivity prediction method based on whole rock and clay mineral composition |
| CN112630118A (en) * | 2020-11-16 | 2021-04-09 | 苏州开洛泰克科学仪器科技有限公司 | Gas permeability measuring device and measuring method for compact material |
-
2013
- 2013-07-25 CN CN201320447580.XU patent/CN203422307U/en not_active Expired - Fee Related
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103926184A (en) * | 2014-04-23 | 2014-07-16 | 中国海洋石油总公司 | Detection method for gas logging porosity of core and detection device thereof |
| CN103969165A (en) * | 2014-04-30 | 2014-08-06 | 东北大学 | Device and method for simultaneously testing permeability of compact rocks under transient state and steady state |
| CN103969165B (en) * | 2014-04-30 | 2017-05-24 | 东北大学 | Device and method for simultaneously testing permeability of compact rocks under transient state and steady state |
| CN104568694A (en) * | 2014-12-19 | 2015-04-29 | 西南石油大学 | Method for testing gas-water relative permeability of dense core |
| CN104568694B (en) * | 2014-12-19 | 2017-02-22 | 西南石油大学 | Method for testing gas-water relative permeability of dense core |
| CN104964905A (en) * | 2015-07-07 | 2015-10-07 | 中国矿业大学 | Tectonic coal permeability tester |
| CN106769684A (en) * | 2016-12-01 | 2017-05-31 | 中国石油天然气股份有限公司 | Shale Gas Diffusion Capability Test System |
| CN106769684B (en) * | 2016-12-01 | 2019-08-06 | 中国石油天然气股份有限公司 | Shale Gas Diffusion Capability Test System |
| CN109490119A (en) * | 2018-12-13 | 2019-03-19 | 中国科学院武汉岩土力学研究所 | A kind of determination method of rock material damage variable |
| CN110702586A (en) * | 2019-11-05 | 2020-01-17 | 清华大学 | Method and device for measuring permeability of rock core |
| CN111577267A (en) * | 2020-05-15 | 2020-08-25 | 重庆科技学院 | Reservoir sensitivity prediction method based on whole rock and clay mineral composition |
| CN112630118A (en) * | 2020-11-16 | 2021-04-09 | 苏州开洛泰克科学仪器科技有限公司 | Gas permeability measuring device and measuring method for compact material |
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