CN109270117B - Data measuring device and method in seepage-heat transfer process of fracture sample - Google Patents
Data measuring device and method in seepage-heat transfer process of fracture sample Download PDFInfo
- Publication number
- CN109270117B CN109270117B CN201811366348.7A CN201811366348A CN109270117B CN 109270117 B CN109270117 B CN 109270117B CN 201811366348 A CN201811366348 A CN 201811366348A CN 109270117 B CN109270117 B CN 109270117B
- Authority
- CN
- China
- Prior art keywords
- temperature
- crack
- inlet
- outlet
- water
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 238000012546 transfer Methods 0.000 title claims abstract description 40
- 238000000034 method Methods 0.000 title claims abstract description 39
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 161
- 239000000523 sample Substances 0.000 claims abstract description 92
- 239000011435 rock Substances 0.000 claims abstract description 71
- 238000001514 detection method Methods 0.000 claims abstract description 23
- 238000012360 testing method Methods 0.000 claims abstract description 14
- 238000013461 design Methods 0.000 claims abstract description 7
- 238000010438 heat treatment Methods 0.000 claims description 31
- 239000000463 material Substances 0.000 claims description 14
- 238000005259 measurement Methods 0.000 claims description 10
- 239000004642 Polyimide Substances 0.000 claims description 9
- 238000006073 displacement reaction Methods 0.000 claims description 9
- 238000002347 injection Methods 0.000 claims description 9
- 239000007924 injection Substances 0.000 claims description 9
- 229920001721 polyimide Polymers 0.000 claims description 9
- -1 polytetrafluoroethylene Polymers 0.000 claims description 6
- 229920001343 polytetrafluoroethylene Polymers 0.000 claims description 6
- 239000004810 polytetrafluoroethylene Substances 0.000 claims description 6
- 239000004576 sand Substances 0.000 claims description 4
- 238000005553 drilling Methods 0.000 claims description 3
- 230000000694 effects Effects 0.000 claims description 3
- 238000004364 calculation method Methods 0.000 description 5
- 239000012530 fluid Substances 0.000 description 3
- 239000004973 liquid crystal related substance Substances 0.000 description 2
- 238000000691 measurement method Methods 0.000 description 2
- 229910052755 nonmetal Inorganic materials 0.000 description 2
- 230000001681 protective effect Effects 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- 239000000565 sealant Substances 0.000 description 2
- 230000002159 abnormal effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 125000000118 dimethyl group Chemical group [H]C([H])([H])* 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 239000003673 groundwater Substances 0.000 description 1
- 239000012774 insulation material Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000013508 migration Methods 0.000 description 1
- 230000005012 migration Effects 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 238000012887 quadratic function Methods 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 229920002545 silicone oil Polymers 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N25/00—Investigating or analyzing materials by the use of thermal means
- G01N25/20—Investigating or analyzing materials by the use of thermal means by investigating the development of heat, i.e. calorimetry, e.g. by measuring specific heat, by measuring thermal conductivity
Abstract
The invention discloses a data measuring device and a measuring method in the seepage-heat transfer process of a fracture sample, wherein in the seepage-heat transfer test process of a single fracture sample, the temperature measuring line in a detection channel of an inlet false rock core can be used for measuring the water temperature Tin2 of a fracture inlet, the temperature measuring line in the detection channel of an outlet false rock core can be used for measuring the water temperature Tout of a fracture outlet in real time, the temperature measuring line in a through hole can be used for measuring the water temperature Tf of an inner edge of the fracture, and the temperature measuring line in a counter bore can be used for measuring the rock temperature Ti of the inner surface of the crack edge; the designed crack gap width measuring device can accurately measure the variation of the crack gap width b, and the probe vertical to the crack surface is closely attached to the outer surface of the sample, so that the influence caused by deformation of the rubber sleeve is eliminated, and the measuring error is greatly eliminated. According to the invention, the inlet end of the clamp holder is specially designed, the temperature calibration is carried out in advance at the inlet end, and the relation between the inlet water temperature of the clamp holder and the inlet water temperature of the crack is studied first, so that the inlet water temperature of the crack can be accurately controlled to reach a standard design value.
Description
Technical Field
The invention relates to a measuring device, in particular to a data measuring device and a measuring method in the seepage-heat transfer process of a fracture sample, and belongs to the field of mine geothermal and heat damage prevention and control.
Background
As the eastern and partial middle regions of China enter deep mining, high-temperature mines are more and more common, and the geothermal resources of the high-temperature mines are actively utilized or passively controlled to become a new direction of green mines aiming at high-heat abnormal mines caused by deep circulating rising groundwater. The key scientific problems to be solved by the subject include the study of water-heat transfer characteristics in a rock mass fracture network, wherein the study of heat transfer tests in the process of single fracture rock sample seepage is the basic work. During research, rock samples can be loaded into the clamping component, related parameters are measured, and then the water-heat migration characteristics in the rock mass fracture network are obtained through calculation and rule summarization.
In practice it has been found that the water flow entering the clamping member is significantly affected by heat transfer, resulting in a significant difference between the clamping member inlet water temperature and the fracture inlet water temperature entering the rock sample, in which case there is a significant error if the fracture inlet water temperature is simply represented by the clamping member inlet water temperature. In addition, in the current research on the heat transfer problem in the seepage process of a single-fracture rock sample, the internal temperature of the rock sample is basically regarded as a black box, namely the fracture edge water temperature and the fracture edge inner surface rock temperature are not researched, and a larger error exists in the measurement of the fracture width b of the fracture. In conclusion, the heat transfer problem in the single fracture seepage process is not fully researched due to the non-uniformity of test variables, the non-knowledge of the internal temperature condition of the rock and the like, and the sufficient reference value cannot be provided for production practice.
Disclosure of Invention
Aiming at the problems existing in the prior art, the invention aims to provide a data measuring device and a data measuring method in the seepage-heat transfer process of a fracture sample, wherein the water temperature at the fracture inlet can be accurately measured, and the internal temperature of a rock sample and the change condition of the fracture can be accurately known.
In order to achieve the above purpose, the invention adopts the following technical scheme: the data measuring device in the seepage-heat transfer process of the fracture sample comprises a clamp holder, wherein the clamp holder comprises a sleeve, a rubber sleeve is coaxially arranged in the sleeve, a confining pressure cavity is arranged between the inner wall of the sleeve and the outer wall of the rubber sleeve, and a confining pressure loading device is arranged outside the sleeve; an inlet false rock core and an inlet plug are sequentially plugged into the rubber sleeve from the inlet side of the clamp holder, an inlet end cover is arranged on the inlet side of the clamp holder, an outlet false rock core and an outlet plug are sequentially plugged into the rubber sleeve from the outlet side of the clamp holder, water flow channels are respectively arranged on the inlet false rock core and the outlet false rock core along respective central axes, and a plurality of seepage grooves are respectively arranged on the opposite side surfaces of the inlet false rock core and the outlet false rock core along the radial direction from the centers;
two water flow holes are formed in the inlet plug and parallel to the central axis of the inlet plug, one water flow hole is communicated to an external water injection device through a pipeline I, a valve I and a temperature sensor are arranged on the pipeline I, the other water flow hole is communicated to the outside through a pipeline II, and a valve II is arranged on the pipeline II;
a cavity surrounded by the inlet false rock core, the outlet false rock core and the rubber sleeve is provided with a single-crack sample, a plurality of test hole groups are distributed in the single-crack sample at intervals along the length direction of the single-crack sample, each test hole group comprises a through hole which is communicated to a crack surface from the outer wall of the single-crack sample along the radial direction of the single-crack sample and a counter bore which is arranged inwards from the outer wall of the single-crack sample, and the bottom of each counter bore is close to the crack surface; the inlet false rock core and the outlet false rock core are respectively provided with detection channels by taking a water flow channel as a starting point in a radial extending way, temperature measuring wires are arranged in the detection channels, the through holes and the counter bores, the temperature measuring wires are led out of the clamp holder together through wiring grooves arranged in the outlet plugs, the centers of the outlet plugs are provided with water flow leading-out holes along the axial directions of the outlet plugs, one ends of the water flow leading-out holes, which are exposed out of the outlet plugs, are connected to a water outlet flowmeter through water outlet pipes, and three-way valves and back pressure valves are arranged on the water outlet pipes; the outside of the sleeve is provided with a gap width measuring device, and a probe of the gap width measuring device passes through the sleeve and the rubber sleeve perpendicular to the gap surface and props against the outer wall of the single-gap sample;
the temperature sensor, the end part of the temperature measuring wire led out of the clamp holder, the gap width measuring device and the water outlet flowmeter are connected to a data collector together.
Preferably, the confining pressure loading device comprises a ring pressure pump and a heating sleeve, the heating sleeve is sleeved on a sleeve, an oil inlet hole and an oil outlet hole are formed in the sleeve, and the oil inlet hole and the oil outlet hole are communicated to the outside of the sleeve from a confining pressure cavity; the outlet of the annular pressure pump is connected with a pressurizing pipeline, the pressurizing pipeline penetrates through the heating sleeve and is connected to the oil inlet, the oil outlet is connected with a pressure relief pipeline, the pressure relief pipeline penetrates through the heating sleeve and is communicated to the atmosphere, the pressurizing pipeline is provided with a switch, and the pressure relief pipeline is provided with an exhaust valve. The heating sleeve can have a temperature measuring function, and can measure the heated temperature in real time; the heating sleeve can also be electrically heated, so that the heating sleeve has higher heating efficiency, and heat is firstly heated and then is transmitted to pressure oil and the rubber sleeve inwards from the sleeve and is transmitted to the surface of the single-crack sample.
The confining pressure loading device further comprises a circulating pump, one end of the circulating pump is connected to the pressurizing pipeline through a circulating valve I, a circulating valve II is arranged between the oil outlet hole and the exhaust valve in the pressure relief pipeline, and the other end of the circulating pump is connected to a pressure relief pipeline section between the exhaust valve and the circulating valve II. The circulating pump can continuously circulate the pressure oil in the confining pressure cavity, so that the difference of oil temperatures at different positions caused by heat transfer is avoided, and the uniformity of the oil temperatures of the pressure oil in the confining pressure cavity is ensured; the circulating pump has the heating function, so that the heat lost by the pressure oil due to heat transfer to water flow can be compensated in time, and the temperature of the outer surface of the single-crack sample is ensured to be stable all the time.
Furthermore, the side surface of the outlet false rock core, which faces the outlet plug, is provided with an O-shaped ring around the water flow channel, and the O-shaped ring is arranged between the outlet false rock core and the outlet plug, so that water flowing out of the water flow channel can be effectively prevented from directly entering the wiring groove to damage the temperature measuring line.
Preferably, the wiring groove exposes the notch of the holder and is provided with a pressure-resistant soft cushion, the pressure-resistant soft cushion is made of three layers of soft cushion materials, namely polyimide, polytetrafluoroethylene and polyimide materials, the temperature measuring wire penetrates through the pressure-resistant soft cushion and is led out of the holder, and the pressure-resistant soft cushion has the characteristic of pressure resistance and can be used for tightly fixing the temperature measuring wire.
Preferably, the gap width measuring device comprises an LVDT displacement sensor, a probe of the gap width measuring platform is connected with the LVDT displacement sensor, the measuring range can be selected according to the gap width, the vertical deformation quantity delta b of the sample gap can be measured, and the LVDT displacement sensor is connected to the data collector.
In order to reduce the heat loss of water flow flowing into the cracks from the inlet of the clamp holder, the inlet end cover is designed to be of a hollow structure, the inlet plug is made of nonmetal polyimide material, the inlet pseudo-rock core is made of polytetrafluoroethylene material, the heat conduction efficiency is low by adopting the material, the difference between the water temperature of the inlet of the clamp holder and the water temperature of the inlet of the cracks in the clamp holder is further reduced, and the heat conduction influence of the temperature of pressure oil at the inlet end of the clamp holder on the water flow is reduced as much as possible.
The invention also discloses a data measurement method in the seepage-heat transfer process of the fracture sample, which comprises the following steps:
step one: cutting the rock into a single-crack sample with a certain rough characteristic by using a sand wire cutting machine, drilling a plurality of through holes and counter bores at intervals inwards from the surface of the single-crack sample by using a 0.8mm drill bit, wherein the bottom of the counter bore is close to the crack surface, the aperture is 1mm, respectively placing a temperature measuring wire into the through holes, the counter bores and a detection channel, then placing the single-crack sample into a holder, enabling a probe of a crack width measuring device to be vertical to the crack surface, and leading the temperature measuring wire out of a holder body through a wiring groove arranged in an outlet plug and connecting the temperature measuring wire to a data collector;
step two: opening a switch, an exhaust valve, a circulating valve II, closing the circulating valve I, driving the annular pressure pump to exhaust air in the confining pressure cavity, closing the exhaust valve, adding pressure oil into the confining pressure cavity, and applying confining pressure sigma 3 And the deformation of the crack under the confining pressure is measured to be delta b, and the confining pressure sigma can be known 3 The crack gap width under the condition is b 0-delta b; after the switch is closed and stabilized, the heating sleeve is used for heating the clamp holder to the target temperature T0, meanwhile, the circulating valve I is opened, the circulating pump works, and the pressure oil in the confining pressure cavity is pumped out for circulating additionHeat maintaining at uniform temperature; after the temperature is stable, under the heat transfer effect, the temperature of the outer surface of the single-crack sample and the temperature of pressure oil in the confining pressure cavity are consistent with the temperature of the surface of the clamp holder and are both T0;
step three: opening an external water injection device, and injecting water flow with flow rate Q and temperature of Tin1 into the pipeline I, wherein the water temperature at the inlet of the clamp is Tin1; closing a three-way valve on a water outlet pipe of the clamp holder, and opening a valve II, wherein water enters an inlet plug through a pipeline I and enters a fracture surface through a water flow channel of an inlet pseudo-rock core, and because the three-way valve is closed, water flows out of the other water flow through hole of the inlet plug and is discharged out of the clamp holder through the pipeline II, the temperature measured by a temperature measuring line in a detection channel of the inlet pseudo-rock core is fracture inlet water temperature Tin2, and the temperature monitored by a temperature sensor is clamp holder inlet water temperature Tin1; calibrating the relation between the water temperature Tin1 of the inlet of the clamp holder and the water temperature Tin2 of the inlet of the crack under the conditions of different flow rates Q and the temperature T0 of the outer surface of the single-crack sample to obtain the relation between Tin2 and Tin1, thereby ensuring that Tin2 is consistent with a design value;
step four: when the heat transfer condition under the conditions of water temperature Tin2 at the inlet of a certain crack, crack width of b 0-delta b, temperature T0 at the outer surface of a single crack sample and flow Q is required to be researched, tin1 value under the working condition is obtained according to the relation between Tin2 and Tin1 in the step three; and then controlling an external water injection device to inject water flow with the temperature of Tin1 into the pipeline at the flow rate of Q, enabling the water flow to flow out of the pipeline II, opening the three-way valve and closing the valve II when the temperature detected by the temperature sensor reaches Tin1, enabling the water flow to pass through a single crack sample in the clamp holder at the moment, after the flow is stable, measuring the crack outlet water temperature Tout by using a temperature measuring line in a detection channel of the outlet pseudo-core, measuring the crack inner edge water temperature Tf by using a temperature measuring line in each through hole, and measuring the crack inner surface rock temperature Ti by using a temperature measuring line in each counter bore.
Compared with the prior art, the invention has the following advantages:
(1) according to the invention, the influence of heat transfer after water flow enters the clamp is fully considered, the water temperature Tin1 at the inlet of the clamp is greatly different from the water temperature Tin2 at the inlet of the crack, the inlet end of the clamp is specially designed, the temperature calibration is carried out at the inlet end in advance, and the relationship between Tin1 and Tin2 in different environmental states is studied first, so that the water temperature Tin2 at the inlet of the crack can be accurately controlled to reach a standard design value; the inlet end cover at the left end of the clamp is subjected to hollow treatment, and the inlet plug and the inlet pseudo-core are made of nonmetallic heat insulation materials, so that the influence of radial heat transfer on the water temperature is reduced as much as possible, and the difference value between the water temperature of the inlet of the clamp and the water temperature of the inlet of the crack is reduced;
(2) according to the invention, through the unique temperature measuring line arrangement, the crack inlet water temperature Tin2 can be measured through the temperature measuring line in the detection channel of the inlet false rock core in the single crack test piece seepage-heat transfer test process, the crack outlet water temperature Tout can be measured in real time through the temperature measuring line in the detection channel of the outlet false rock core, the crack inner edge water temperature Tf can be measured through the temperature measuring line in the through hole, and the crack inner surface rock temperature Ti can be measured through the temperature measuring line in the counter bore; the designed crack gap width measuring device can accurately measure the variation of the crack gap width b, and the probe vertical to the crack surface is closely attached to the outer surface of the sample, so that the influence caused by deformation of the rubber sleeve is eliminated, and compared with other designs, the measuring error is greatly eliminated;
(3) when the device is used for measuring the water-rock interface heat convection coefficient, related variables such as flow Q, rock outer surface temperature T0, crack inlet water temperature Tin2, crack initial crack width b0 and crack width deformation delta b can be set according to the requirements of experimenters, and experimental variables such as crack outlet water temperature Tout, crack inner edge water temperature Tf and crack inner edge surface rock temperature Ti can be accurately measured. Compared with other similar designs, the method has the advantages that the control variable is more accurate, the measured variable is more, and the possibility is provided for researching the quantitative relation between h and different variables.
Drawings
FIG. 1 is a schematic diagram of a measuring device of the present invention;
FIG. 2 is a front view of the locations of various bores in the holder of the present invention;
FIG. 3 is a top view of FIG. 2;
FIG. 4 is a perspective view of a single-slit test specimen of the present invention;
FIG. 5 is a schematic representation of measured variables within a holder of the present invention;
FIG. 6 is a schematic illustration of the sides of an inlet pseudo core and an outlet pseudo core opposite each other in the holder of the present invention;
FIG. 7 is a schematic side view of the outlet pseudo-core of the present invention on the side facing the outlet plug;
FIG. 8 is a schematic side view of an outlet plug of the present invention;
FIG. 9 is a schematic view of a confining pressure loading device of the invention;
FIG. 10 is a schematic illustration of the heat transfer process of the heating jacket of the present invention heating the holder;
in the figure, 9. The sleeve; 9-1, an oil inlet hole; 9-2, oil outlet holes; 10. a rubber sleeve; 11. an inlet plug; 12. an inlet pseudo-core; 13. a single fracture sample; 13-1, through holes; 13-2, counter bore; 13-3, crack surfaces; 14. a gap width measuring device; 14-1. A probe; 15. an inlet end cap; 16. an inlet protective cover; 17. wiring grooves; 17-1, a pressure-resistant soft cushion; 18. a temperature sensor; 19. a back pressure valve; 20. positioning columns; 21. a temperature measuring line; 22. a pressure sensor II; 23. a ring pressure pump; 24. a circulation pump; 25. a heating jacket; 26. a switch; 27. a circulation valve I; 28. an exhaust valve; 29. a circulation valve II; 30. a pressure sensor I; 31. a three-way valve; 33. a pipeline I; 33-1, valve I; 32. a pipeline II; 32-1, valve II; 34. outlet false cores; 35. an outlet plug; 35-1, a water flow leading-out hole; 36. an outlet protective cover; 37. a seepage groove; an o-ring; 40. a water flow channel; 50. a detection channel; 60. a water outlet flowmeter; 70. a data collector.
Detailed Description
The invention is described in further detail below with reference to the accompanying drawings.
As shown in fig. 1 to 9, a data measurement device in a seepage-heat transfer process of a fracture sample comprises a clamp holder, wherein the clamp holder comprises a sleeve 9, a rubber sleeve 10 is coaxially arranged in the sleeve 9, a confining pressure cavity is arranged between the inner wall of the sleeve 9 and the outer wall of the rubber sleeve 10, and a confining pressure loading device is arranged outside the sleeve 9; an inlet false core 12 and an inlet plug 11 are sequentially plugged into the rubber sleeve 10 from the inlet side of the holder, an inlet end cover 15 is arranged on the inlet side of the holder, an outlet false core 34 and an outlet plug 35 are sequentially plugged into the rubber sleeve 10 from the outlet side of the holder, water flow channels 40 are respectively arranged on the inlet false core 12 and the outlet false core 34 along respective central axes, and a plurality of seepage grooves 37 are respectively arranged on opposite sides of the inlet false core 12 and the outlet false core 34 along the radial direction from the centers;
two water flow holes are formed in the inlet plug 11 in parallel with the central axis of the inlet plug, one water flow hole is communicated with an external water injection device through a pipeline I33, a valve I33-1 and a temperature sensor 18 are arranged on the pipeline I33, the other water flow hole is communicated to the outside through a pipeline II 32, and a valve II 32-1 is arranged on the pipeline II 32;
the cavity surrounded by the inlet false rock core 12, the outlet false rock core 34 and the rubber sleeve 10 is internally provided with a single-crack sample 13, a plurality of test hole groups are distributed in the single-crack sample 13 at intervals along the length direction of the single-crack sample, each test hole group comprises a through hole 13-1 which is communicated to a crack surface 13-3 from the outer wall of the single-crack sample 13 along the radial direction of the single-crack sample, and a counter bore 13-2 which is formed inwards from the outer wall of the single-crack sample 13, and the bottom of the counter bore 13-2 is close to the crack surface 13-3; the inlet pseudo-core 12 and the outlet pseudo-core 34 are respectively provided with a detection channel 50 extending along the radial direction by taking a water flow channel 40 as a starting point, the detection channels 50, the through holes 13-1 and the counter bores 13-2 are respectively provided with a temperature measuring line 21, the temperature measuring lines 21 are led out of the clamp through a wiring groove 17 arranged in the outlet plug 35, the center of the outlet plug 35 is provided with a water flow leading-out hole 35-1 along the axial direction thereof, one end of the water flow leading-out hole 35-1, which is exposed out of the outlet plug 35, is connected to a water outlet flowmeter 60 through a water outlet pipe, and the water outlet pipe is provided with a three-way valve 31 and a back pressure valve 19; the outside of the sleeve 9 is provided with a gap width measuring device 14, and a probe 14-1 of the gap width measuring device 14 penetrates through the sleeve 9 and the rubber sleeve 10 perpendicular to the gap surface 13-3 and abuts against the outer wall of the single-gap sample 13.
The temperature sensor 18, the end of the temperature measuring wire 21 leading out of the holder, the gap width measuring device 14 and the water outlet flowmeter 60 are connected to a data collector 70. The data collector 70 can be a PCI720 type collector of the Minghua technology, and can receive the detection data of each detection component in real time and display the detection data in real time.
Preferably, the confining pressure loading device comprises a confining pressure pump 23 and a heating sleeve 25, the heating sleeve 25 is sleeved on the sleeve 9, an oil inlet hole 9-1 and an oil outlet hole 9-2 are formed in the sleeve 9, and the oil inlet hole 9-1 and the oil outlet hole 9-2 are communicated from the confining pressure cavity to the outside of the sleeve 9; the outlet of the annular pressure pump 23 is connected with a pressurizing pipeline, the pressurizing pipeline passes through the heating sleeve 25 and is connected to the oil inlet hole 9-1, the oil outlet hole 9-2 is connected with a pressure relief pipeline, the pressure relief pipeline passes through the heating sleeve 25 and is communicated to the atmosphere, the pressurizing pipeline is provided with a switch 26, and the pressure relief pipeline is provided with an exhaust valve 28. The heating jacket 25 can have a temperature measuring function, and can measure the temperature heated in real time; the heating sleeve 25 can be electrically heated, so that the heating efficiency is high, the sleeve 9 is heated first, and heat is transmitted from the sleeve 9 to the pressure oil and the rubber sleeve 10 inwards and to the surface of the single-crack sample 13.
The confining pressure loading device further comprises a circulating pump 24, one end of the circulating pump 24 is connected to a pressurizing pipeline through a circulating valve I27, a circulating valve II 29 is arranged between the oil outlet hole 9-2 and the exhaust valve 28 in the pressure relief pipeline, and the other end of the circulating pump 24 is connected to a pressure relief pipeline section between the exhaust valve 28 and the circulating valve II 29. The circulating pump 24 can continuously circulate the pressure oil in the confining pressure cavity, so that the difference of oil temperatures at different positions caused by heat transfer is avoided, and the uniformity of the oil temperatures of the pressure oil in the confining pressure cavity is ensured; the circulating pump 24 has the heating function, so that the heat lost by the pressure oil due to heat transfer to the water flow can be timely compensated, and the temperature of the outer surface of the single-crack sample 13 is always stable.
Further, an O-ring 38 is provided around the water flow channel 40 on the side of the outlet dummy core 34 facing the outlet plug 35, and the O-ring 38 is provided between the outlet dummy core 34 and the outlet plug 35, so that water flowing out of the water flow channel 40 can be effectively prevented from directly entering the wiring groove 17 to damage the temperature measuring line 21.
Preferably, the notch of the wiring groove 17 exposed out of the holder is provided with a pressure-resistant soft cushion 17-1, the pressure-resistant soft cushion 17-1 is made of three layers of soft cushion materials, namely polyimide, polytetrafluoroethylene and polyimide materials, the temperature measuring line 21 passes through the pressure-resistant soft cushion 17-1 and is led out of the holder, and the pressure-resistant soft cushion 17-1 has the characteristic of pressure resistance and can tightly fix the temperature measuring line 21.
Preferably, the gap width measuring device 14 comprises an LVDT displacement sensor, the probe 14-1 of the gap width measuring platform is connected with the LVDT displacement sensor, the measuring range can be selected according to the gap width, the vertical deformation quantity Deltab of the sample gap can be measured, and the LVDT displacement sensor is connected with the data collector 70.
In order to reduce the heat loss of the water flow flowing into the cracks from the inlet of the clamp, the inlet end cover 15 is designed to be of a hollow structure, the inlet plug 11 is made of nonmetal polyimide material, the inlet pseudo-core 12 is made of polytetrafluoroethylene material, the heat conduction efficiency is low by adopting the material, the difference between the water temperature of the inlet of the clamp and the water temperature of the inlet of the cracks in the clamp is further reduced, and the heat transfer influence of the temperature of pressure oil at the inlet end of the clamp on the water flow is reduced as much as possible.
Preferably, the outer wall of the rubber sleeve 10 is provided with a positioning column 20, the positioning column 20 can be embedded into a hole in the inner wall of the sleeve 9 in a matching way, and when the positioning column 20 is embedded into the hole in the inner wall of the sleeve 9, the slit surface 13-3 of the single slit sample 13 is just vertical to the probe 14-1 of the slit width measuring device 14. When the single-slit sample 13 is put into the rubber sleeve 10, the rubber sleeve 10 is positioned in the sleeve 9 through the positioning column 20, the positioning column 20 facilitates the positioning of the slit surface 13-3, and the slit surface 13-3 of the single-slit sample 13 after the sample is put into the rubber sleeve can be ensured to be always vertical to the probe 14-1 of the slit width measuring device 14.
The fracture surface 13-3 of the single fracture specimen 13 is designed in advance and is cut by a sand wire cutting machine.
The three-way valve 31 is connected with a pressure sensor I30, a pipeline I33 is provided with a pressure sensor II 22, and the pressure sensors are commonly connected to the data collector 70. The pressure gradient at two ends in the seepage process can be measured through the pressure sensors at two ends of the clamp holder; the water outlet flow meter 60 is an electronic balance, the electronic balance measures the weight of water flow injected into the beaker at intervals to obtain flow, the flow value is equal to the flow Q input into the inlet of the clamp, the water flow coming out of the clamp is more stable, and the measured flow is more accurate and reliable.
Preferably, to ensure a secure connection, the inlet end cap 15 is fixed to the inlet side of the sleeve 9 by the inlet protection cap 16, and the outlet plug 35 is fixed to the outlet side of the sleeve 9 by the outlet protection cap 36.
Preferably, in order to ensure stability and extend service life, the temperature measuring wire 21 is fixed in each hole and channel by a high temperature resistant sealant. The temperature measuring range of the temperature measuring line is-200-260 ℃.
The variables involved in the study are shown in FIG. 5 and include flow rate Q (ml/min), water flow entry fracture entry temperature Tin2 (deg.C), rock exterior surface temperature T0 (deg.C), rock fracture gap width b (um), fracture exit water temperature Tout (deg.C), fracture inner edge Cheng Shuiwen Tf (deg.C), fracture edge travel interior surface rock temperature Ti (deg.C).
The invention relates to a data measurement method in the seepage-heat transfer process of a fracture sample, which specifically comprises the following steps:
step one: cutting the rock into a single-crack sample 13 with a certain rough characteristic by using a sand wire cutting machine, drilling a plurality of through holes 13-1 and counter holes 13-2 from the surface of the single-crack sample 13 at intervals inwards by using a 0.8mm drill bit, wherein the bottoms of the counter holes 13-2 are close to the crack surface 13-3, the aperture is 1mm, a temperature measuring wire 21 is respectively arranged in the through holes 13-1, the counter holes 13-2 and a detection channel 50, the temperature measuring wire 21 is fixed in each hole and each channel by using high-temperature resistant sealant, the two sides of the single-crack sample 13 are sealed by using AB glue, the single-crack sample 13 is put into a holder, the probe 14-1 of a gap width measuring device 14 is perpendicular to the crack surface 13-3, and the temperature measuring wire 21 is led out of the holder body through a wiring groove 17 arranged in an outlet plug 35 and is connected to a data collector 70;
step two: opening the switch 26, the exhaust valve 28, the circulation valve II 29, closing the circulation valve I27, driving the annular pressure pump 23 to exhaust air in the confining pressure cavity, closing the exhaust valve 28, adding pressure oil such as dimethyl silicone oil into the confining pressure cavity to apply confining pressure sigma 3 And the deformation of the crack under the confining pressure is measured to be delta b, and the confining pressure sigma can be known 3 The crack gap width under the condition is b 0-delta b; after the switch 26 is closed and the pressure is stabilized, the heating sleeve 25 is used for heating the clamp holder to the target temperature T0, meanwhile, the circulating valve I27 is opened, the circulating pump 24 works, and the pressure oil in the confining pressure cavity is pumped out for circulating and keeping the uniform temperature; after the temperature is stable, the temperature of the outer surface of the single-crack sample 13 and the temperature of pressure oil in the confining pressure cavity are consistent with the temperature of the surface of the clamp holder sleeve 9 under the heat transfer effect and are both T0;
step three: opening an external water injection device, and injecting water flow with flow rate Q and temperature of Tin1 into a pipeline I33, wherein the water temperature at the inlet of the clamp is Tin1; closing a three-way valve 31 on a water outlet pipe of the clamp, opening a valve II 32-1, enabling water to flow through a pipeline I33 to enter an inlet plug 11 and enter a fracture surface 13-3 through a water flow channel 40 of an inlet false rock core 12, enabling water to flow out of the other water flow through hole of the inlet plug 11 and be discharged out of the clamp through the pipeline II 32 because the three-way valve 31 is closed, wherein the temperature measured by a temperature measuring line 21 in a detection channel 50 of the inlet false rock core 12 is fracture inlet water temperature Tin2, and the temperature monitored by a temperature sensor 18 is clamp inlet water temperature Tin1; calibrating the relation between the water temperature Tin1 of the inlet of the clamp holder and the water temperature Tin2 of the inlet of the crack under the conditions of different flow rates Q and the temperature T0 of the outer surface of the single-crack sample 13 to obtain the relation between Tin2 and Tin1, thereby ensuring that Tin2 is consistent with a design value;
step four: when the heat transfer condition under the conditions of water temperature Tin2 at the inlet of a certain crack, crack width of b 0-delta b, temperature T0 at the outer surface of a single crack sample and flow Q is required to be researched, tin1 value under the working condition is obtained according to the relation between Tin2 and Tin1 in the step three; and then controlling an external water injection device to inject water flow with the temperature of Tin1 into the pipeline II 32 at the flow rate of Q, when the temperature detected by the temperature sensor 18 reaches Tin1, setting the pressure of the back pressure valve 19 to be 0.1MPa, opening the three-way valve 31, closing the valve II 32-1, enabling the water flow to pass through the single-fracture sample 13 in the clamp holder, after the flow rate is stable, measuring the fracture outlet water temperature Tout by using the temperature measuring wire 21 in the detection channel 50 of the outlet pseudo-rock core 34, measuring the fracture inner edge water temperature Tf by using the temperature measuring wire 21 in each through hole 13-1, and measuring the fracture inner surface rock temperature Ti by using the temperature measuring wire 21 in each counter bore 13-2.
The heat convection coefficient h can be obtained by deduction and calculation according to the obtained data, and the calculation process is as follows:
after the water rock reaches a steady state, the heat conduction in the rock, the heat exchanged by the water rock and the heat taken away by the water are equal,
wherein, the heat that water took away is:
Q 1 ＝c p q v ρ w (T out -T in2 )
wherein Q is 1 Heat taken away by water, J/s; c p -constant pressure specific heat of water, J/(kg·k); q v Flow of water, m 3 /s；ρ w Density of water, kg/m 3 ；q v For the volume flow of the fluid, q v V 2R, v is the velocity of water, b is the gap width, R is the radius of the cylindrical single-slit specimen 13;
the heat exchanged by the water rock is as follows:
wherein, the liquid crystal display device comprises a liquid crystal display device,-an average temperature of the entire inner surface of the rock; />Is the average temperature of the water flow along the whole surface; h-convection heat transfer coefficient, W/m 2 K; a is water rock contact area, wherein in the test, the water rock contact area is 2wL, w is crack width, in the test, 2R is the length of a single crack sample 13;
the two heat amounts are equal, then:
(1) when the fluid flow is below 5ml/min, the radial temperature of the cylinder of the single-crack sample 13 is linearly distributed, and the average temperature of the inner surface of the rock is the sameThe method comprises the following steps:
in the above-mentioned method, the step of,the internal surface temperature T of a plurality of cracks measured for the device i Average value of T 0 Is the rock outer surface temperature, at which time the average temperature of the water flow is +.>The method comprises the following steps:
T 1 and obtaining a fitting curve for the device based on the measured water temperatures Tf of the inner edges of the plurality of cracks, wherein the fitting formula is as follows:
T 1 ＝T 0 +(T in2 -T 0 )exp(-B)
wherein B is a coefficient of a fitting curve;
average temperature of the water flowThe method comprises the following steps:
in the above-mentioned method, the step of,is the average value of the water temperature along the inner edge of the crack;
then, the calculation formula of the convection heat exchange coefficient h under the working condition is as follows:
(2) when the fluid flow is above 5ml/min, the radial temperature of the cylinder of the single-crack sample (13) is distributed in a quadratic function, and at the moment, the average temperature of the inner surface of the rockThe method comprises the following steps:
in the above-mentioned method, the step of,the internal surface temperature T of a plurality of cracks measured for the device i Average value of T 0 Is the temperature of the outer surface of the rock,
at such higher flow rates, the average temperature of the water flowThe method comprises the following steps:
then, the calculation formula of the convection heat exchange coefficient h under the working condition is as follows:
Claims (8)
1. a data measuring device in the seepage-heat transfer process of a fracture sample comprises a clamp holder, and is characterized in that,
the clamp holder comprises a sleeve (9), a rubber sleeve (10) is coaxially arranged in the sleeve (9), a confining pressure cavity is arranged between the inner wall of the sleeve (9) and the outer wall of the rubber sleeve (10), and a confining pressure loading device is arranged outside the sleeve (9); an inlet false rock core (12) and an inlet plug (11) are sequentially plugged into the rubber sleeve (10) from the inlet side of the clamp holder, an inlet end cover (15) is arranged on the inlet side of the clamp holder, an outlet false rock core (34) and an outlet plug (35) are sequentially plugged into the rubber sleeve (10) from the outlet side of the clamp holder, the inlet false rock core (12) and the outlet false rock core (34) are respectively provided with a water flow channel (40) along respective central axes, and a plurality of seepage grooves (37) are respectively arranged on opposite side surfaces of the inlet false rock core (12) and the outlet false rock core (34) along the radial direction from the centers;
two water flow holes are formed in the inlet plug (11) and parallel to the central axis of the inlet plug, one water flow hole is communicated to an external water injection device through a pipeline I (33), a valve I (33-1) and a temperature sensor (18) are arranged on the pipeline I (33), the other water flow hole is communicated to the outside through a pipeline II (32), and a valve II (32-1) is arranged on the pipeline II (32);
the device comprises an inlet false rock core (12), an outlet false rock core (34) and a rubber sleeve (10), wherein a cavity formed by encircling is provided with a single-crack sample (13), a plurality of test hole groups are distributed in the single-crack sample (13) at intervals along the length direction of the single-crack sample, each test hole group comprises a through hole (13-1) which is communicated to a crack surface (13-3) from the outer wall of the single-crack sample (13) along the radial direction of the single-crack sample and a counter bore (13-2) which is formed inwards from the outer wall of the single-crack sample (13), and the bottom of the counter bore (13-2) is close to the crack surface (13-3); the device is characterized in that detection channels (50) are respectively arranged in the inlet pseudo-rock core (12) and the outlet pseudo-rock core (34) in a radial extending mode by taking a water flow channel (40) as a starting point, temperature measuring wires (21) are arranged in the detection channels (50), through holes (13-1) and counter bores (13-2), the temperature measuring wires (21) are led out of the clamp holder together through wiring grooves (17) arranged in outlet plugs (35), water flow leading-out holes (35-1) are formed in the centers of the outlet plugs (35) in the axial direction of the outlet plugs, one ends of the water flow leading-out holes (35-1), exposed out of the outlet plugs (35), are connected to a water outlet flowmeter (60) through water outlet pipes, and three-way valves (31) and back pressure valves (19) are arranged on the water outlet pipes; a gap width measuring device (14) is arranged outside the sleeve (9), and a probe (14-1) of the gap width measuring device (14) penetrates through the sleeve (9) and the rubber sleeve (10) and props against the outer wall of the single-gap sample (13) perpendicular to the gap surface (13-3);
the temperature sensor (18), the end part of the temperature measuring wire (21) led out of the clamp holder, the gap width measuring device (14) and the water outlet flowmeter (60) are connected to a data collector (70) together; the wiring groove (17) is exposed out of the notch of the clamp holder and is provided with a pressure-resistant soft cushion (17-1), and the inlet end cover (15) is designed to be of a hollow structure.
2. The data measurement device in the seepage-heat transfer process of the fracture sample according to claim 1, wherein the confining pressure loading device comprises a ring pressure pump (23) and a heating sleeve (25), the heating sleeve (25) is sleeved on the sleeve (9), an oil inlet hole (9-1) and an oil outlet hole (9-2) are formed in the sleeve (9), and the oil inlet hole (9-1) and the oil outlet hole (9-2) are communicated from the confining pressure cavity to the outside of the sleeve (9); the outlet of the annular pressure pump (23) is connected with a pressurizing pipeline, the pressurizing pipeline penetrates through the heating sleeve (25) and is connected to the oil inlet hole (9-1), the oil outlet hole (9-2) is connected with a pressure relief pipeline, the pressure relief pipeline penetrates through the heating sleeve (25) and is communicated to the atmosphere, the pressurizing pipeline is provided with a switch (26), and the pressure relief pipeline is provided with an exhaust valve (28).
3. The data measurement device in the process of seepage-heat transfer of a fracture sample according to claim 2, further comprising a circulation pump (24), wherein one end of the circulation pump (24) is connected to the pressurizing pipeline through a circulation valve i (27), the pressure relief pipeline is provided with a circulation valve ii (29) between the oil outlet hole (9-2) and the exhaust valve (28), and the other end of the circulation pump (24) is connected to a pressure relief pipeline section between the exhaust valve (28) and the circulation valve ii (29).
4. The device for measuring data in a crack specimen seepage-heat transfer process according to claim 1, wherein the side surface of the outlet pseudo-core (34) facing the outlet plug (35) surrounds the water flow channel (40) and is provided with an O-ring (38), and the O-ring (38) is arranged between the outlet pseudo-core (34) and the outlet plug (35).
5. The data measuring device in the seepage-heat transfer process of the fracture sample according to claim 1, wherein the pressure-resistant soft pad (17-1) is composed of three layers of soft pad materials, namely polyimide, polytetrafluoroethylene and polyimide materials, and the temperature measuring line (21) penetrates through the pressure-resistant soft pad (17-1) and is led out of the clamp.
6. The data measurement device in a slit specimen seepage-heat transfer process according to claim 1, wherein the slit width measurement device (14) comprises an LVDT displacement sensor, the probe (14-1) of the slit width measurement platform is connected to the LVDT displacement sensor, and the LVDT displacement sensor is connected to the data collector (70).
7. The data measurement device in a slit sample seepage-heat transfer process according to claim 1, wherein the inlet plug (11) is made of a nonmetallic polyimide material, and the inlet pseudo-core (12) is made of polytetrafluoroethylene material.
8. A method of data measurement during a slit specimen seepage-heat transfer operation using the slit specimen seepage-heat transfer data measurement device of any one of claims 1-7, comprising the steps of:
step one: cutting the rock into a single-crack sample (13) with a certain rough characteristic by using a sand wire cutting machine, drilling a plurality of through holes (13-1) and countersinks (13-2) from the surface of the single-crack sample (13) at intervals inwards by using a 0.8mm drill bit, wherein the bottoms of the countersinks (13-2) are close to a crack surface (13-3), the apertures are 1mm, a temperature measuring wire (21) is respectively arranged in the through holes (13-1), the countersinks (13-2) and a detection channel (50), the single-crack sample (13) is arranged in a clamp, a probe (14-1) of a crack width measuring device (14) is perpendicular to the crack surface (13-3), and the temperature measuring wire (21) is led out of the clamp body through a wiring groove (17) arranged in an outlet plug (35) and is connected to a data collector (70);
step two: opening a switch (26), an exhaust valve (28) and a circulating valve II (29), closing the circulating valve I (27), driving the annular pressure pump (23) to exhaust air in the confining pressure cavity, closing the exhaust valve (28), adding pressure oil into the confining pressure cavity, and applying confining pressure sigma 3 And the deformation of the crack under the confining pressure is measured to be delta b, and the confining pressure sigma can be known 3 The crack gap width under the condition is b 0-delta b; after the switch (26) is closed and stabilized, the heating sleeve (25) is used for heating the clamp holder to the target temperature T0, meanwhile, the circulating valve I (27) is opened, the circulating pump (24) works, and the pressure oil in the confining pressure cavity is pumped out for circulating heating to maintain the uniform temperature; after the temperature is stable, the temperature of the outer surface of the single-crack sample (13) and the temperature of pressure oil in the confining pressure cavity are consistent with the temperature of the surface of the clamp holder under the heat transfer effect and are T0;
step three: opening an external water injection device, and injecting water flow with flow rate Q and temperature of Tin1 into a pipeline I (33), wherein the water temperature at the inlet of the clamp is Tin1; closing a three-way valve (31) on a water outlet pipe of the clamp, opening a valve II (32-1), enabling water to flow through a pipeline I (33) to enter an inlet plug (11) and enter a crack surface (13-3) through a water flow channel (40) of an inlet false rock core (12), wherein water flows out of the other water flow through hole of the inlet plug (11) and is discharged out of the clamp through a pipeline II (32) due to the fact that the three-way valve (31) is closed, the temperature measured by a temperature measuring line (21) in a detection channel (50) of the inlet false rock core (12) is crack inlet water temperature Tin2, and the temperature monitored by a temperature sensor (18) is clamp inlet water temperature Tin1; calibrating the relation between the water temperature Tin1 of the inlet of the clamp holder and the water temperature Tin2 of the inlet of the crack under the conditions of different flow rates Q and the temperature T0 of the outer surface of the single-crack sample (13) to obtain the relation between Tin2 and Tin1, thereby ensuring that Tin2 is consistent with a design value;
step four: when the heat transfer condition under the conditions of water temperature Tin2 at the inlet of a certain crack, crack width of b 0-delta b, temperature T0 at the outer surface of a single crack sample and flow Q is required to be researched, tin1 value under the working condition is obtained according to the relation between Tin2 and Tin1 in the step three; and then controlling an external water injection device to inject water flow with the temperature of Tin1 into the pipeline II (32) at the flow rate Q, opening the three-way valve (31) and closing the valve II (32-1) when the temperature sensor (18) detects that the temperature reaches Tin1, and after the water flow is stable, measuring the crack outlet water temperature Tout by using the temperature measuring line (21) in the detection channel (50) of the outlet pseudo-core (34), measuring the crack inner edge water temperature Tf by using the temperature measuring line (21) in each through hole (13-1) and measuring the crack inner surface rock temperature Ti by using the temperature measuring line (21) in each counter bore (13-2) when the water flow passes through the single crack sample (13) in the clamp.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811366348.7A CN109270117B (en) | 2018-11-16 | 2018-11-16 | Data measuring device and method in seepage-heat transfer process of fracture sample |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811366348.7A CN109270117B (en) | 2018-11-16 | 2018-11-16 | Data measuring device and method in seepage-heat transfer process of fracture sample |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109270117A CN109270117A (en) | 2019-01-25 |
| CN109270117B true CN109270117B (en) | 2023-10-27 |
Family
ID=65189613
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811366348.7A Active CN109270117B (en) | 2018-11-16 | 2018-11-16 | Data measuring device and method in seepage-heat transfer process of fracture sample |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109270117B (en) |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109653741A (en) * | 2019-02-03 | 2019-04-19 | 西南石油大学 | Pressure break horizontal well temperature profile imitative experimental appliance and method based on DTS |
| CN109870349B (en) * | 2019-03-29 | 2023-10-27 | 中国矿业大学 | High-temperature high-pressure hydraulic fracturing clamp holder and test method thereof |
| CN109870350B (en) * | 2019-03-29 | 2023-10-27 | 中国矿业大学 | Liquid leakage prevention high-temperature high-pressure hydraulic fracturing system and test method |
| CN110207640B (en) * | 2019-05-31 | 2024-04-05 | 中国矿业大学 | Single-crack micron-sized gap width measuring structure, and mounting method and measuring method thereof |
| CN110579160A (en) * | 2019-10-12 | 2019-12-17 | 安徽理工大学 | Tension fracture depth and width measuring device and application thereof |
| CN110794117B (en) * | 2019-11-28 | 2021-12-21 | 吉林大学 | Hot dry rock laboratory simulation system and method with supercritical carbon dioxide as hot working medium |
| CN111879814B (en) * | 2020-07-31 | 2023-08-22 | 武汉大学 | Fracture rock mass hydrothermal transmission mechanism experimental device and system |
| CN115824916A (en) * | 2022-10-17 | 2023-03-21 | 中国科学院地质与地球物理研究所 | Smooth parallel fractured rock mass seepage temperature measuring device and interpretation method thereof |
Citations (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2310072C1 (en) * | 2006-06-06 | 2007-11-10 | Общество с ограниченной ответственностью "Гло-Бел нефтесервис" | Raw oil and gas investigation plant |
| CN101710048A (en) * | 2009-10-21 | 2010-05-19 | 中国矿业大学 | Device and method for heating rock specimen under triaxial pressure |
| CN102435539A (en) * | 2011-09-13 | 2012-05-02 | 中国矿业大学 | High temperature seepage test device and method |
| CN104594885A (en) * | 2014-10-16 | 2015-05-06 | 北京科技大学 | Measuring test device and method for seepage law of shale gas in microfractures |
| CN105675469A (en) * | 2016-01-25 | 2016-06-15 | 中国矿业大学 | Full-automatic test system and measurement method for gas permeability of rock |
| CN105806763A (en) * | 2016-03-16 | 2016-07-27 | 中国地质大学（武汉） | Visualized test device for hot dry rock crack seepage and heat exchange process |
| CN105928859A (en) * | 2016-07-08 | 2016-09-07 | 中国地质大学（武汉） | Device and method for testing rock fracture seepage parameters under high temperature and high pressure conditions |
| CN105973786A (en) * | 2016-07-14 | 2016-09-28 | 西南石油大学 | Shale base block dynamic damage evaluation device and method based on liquid pressure pulse |
| CN106033485A (en) * | 2016-06-21 | 2016-10-19 | 中国大唐集团科技工程有限公司 | Rock mass temperature calculating method under action of seepage heat transfer coupling |
| KR101671983B1 (en) * | 2015-10-12 | 2016-11-03 | 한국가스공사 | Method of calculating permeability of porous material using geometry equivalent permeability |
| CN107014114A (en) * | 2017-03-15 | 2017-08-04 | 西南科技大学 | A kind of efficient underground heat-exchanger device of enclosed standing column well earth source heat pump |
| CN107421869A (en) * | 2017-07-30 | 2017-12-01 | 福州大学 | A kind of crack rock infiltration coefficient evolution test device and test method |
| CN107991216A (en) * | 2017-11-28 | 2018-05-04 | 中南大学 | Fluid fracture seepage simulator under a kind of high temperature stress |
| CN108007845A (en) * | 2017-12-25 | 2018-05-08 | 中国地质大学（武汉） | A kind of high temperature fracture seepage simulator for changing fracture opening |
| CN108387712A (en) * | 2018-02-23 | 2018-08-10 | 山东科技大学 | A kind of coal petrography unidirectionally heated and bidirectional stress experimental system for simulating and method |
| CN109211972A (en) * | 2018-11-16 | 2019-01-15 | 中国矿业大学 | The interface Shui Yan convection transfer rate measuring device in the sample seepage flow diabatic process of crack |
| CN209102652U (en) * | 2018-11-16 | 2019-07-12 | 中国矿业大学 | Data measurement unit in crack sample seepage flow-diabatic process |
-
2018
- 2018-11-16 CN CN201811366348.7A patent/CN109270117B/en active Active
Patent Citations (19)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2310072C1 (en) * | 2006-06-06 | 2007-11-10 | Общество с ограниченной ответственностью "Гло-Бел нефтесервис" | Raw oil and gas investigation plant |
| CN101710048A (en) * | 2009-10-21 | 2010-05-19 | 中国矿业大学 | Device and method for heating rock specimen under triaxial pressure |
| CN102435539A (en) * | 2011-09-13 | 2012-05-02 | 中国矿业大学 | High temperature seepage test device and method |
| CN104594885A (en) * | 2014-10-16 | 2015-05-06 | 北京科技大学 | Measuring test device and method for seepage law of shale gas in microfractures |
| KR101671983B1 (en) * | 2015-10-12 | 2016-11-03 | 한국가스공사 | Method of calculating permeability of porous material using geometry equivalent permeability |
| CN105675469A (en) * | 2016-01-25 | 2016-06-15 | 中国矿业大学 | Full-automatic test system and measurement method for gas permeability of rock |
| WO2017128479A1 (en) * | 2016-01-25 | 2017-08-03 | 中国矿业大学 | Fully-automated system for testing gas permeability of rock and estimation method |
| CN105806763A (en) * | 2016-03-16 | 2016-07-27 | 中国地质大学（武汉） | Visualized test device for hot dry rock crack seepage and heat exchange process |
| CN106033485A (en) * | 2016-06-21 | 2016-10-19 | 中国大唐集团科技工程有限公司 | Rock mass temperature calculating method under action of seepage heat transfer coupling |
| CN105928859A (en) * | 2016-07-08 | 2016-09-07 | 中国地质大学（武汉） | Device and method for testing rock fracture seepage parameters under high temperature and high pressure conditions |
| CN105973786A (en) * | 2016-07-14 | 2016-09-28 | 西南石油大学 | Shale base block dynamic damage evaluation device and method based on liquid pressure pulse |
| WO2018010405A1 (en) * | 2016-07-14 | 2018-01-18 | 西南石油大学 | Shale block dynamic damage evaluation apparatus and method based on liquid pressure pulse |
| CN107014114A (en) * | 2017-03-15 | 2017-08-04 | 西南科技大学 | A kind of efficient underground heat-exchanger device of enclosed standing column well earth source heat pump |
| CN107421869A (en) * | 2017-07-30 | 2017-12-01 | 福州大学 | A kind of crack rock infiltration coefficient evolution test device and test method |
| CN107991216A (en) * | 2017-11-28 | 2018-05-04 | 中南大学 | Fluid fracture seepage simulator under a kind of high temperature stress |
| CN108007845A (en) * | 2017-12-25 | 2018-05-08 | 中国地质大学（武汉） | A kind of high temperature fracture seepage simulator for changing fracture opening |
| CN108387712A (en) * | 2018-02-23 | 2018-08-10 | 山东科技大学 | A kind of coal petrography unidirectionally heated and bidirectional stress experimental system for simulating and method |
| CN109211972A (en) * | 2018-11-16 | 2019-01-15 | 中国矿业大学 | The interface Shui Yan convection transfer rate measuring device in the sample seepage flow diabatic process of crack |
| CN209102652U (en) * | 2018-11-16 | 2019-07-12 | 中国矿业大学 | Data measurement unit in crack sample seepage flow-diabatic process |
Non-Patent Citations (5)
| Title |
|---|
| 地热水在矿山深部岩体单一裂隙中的渗流规律分析;黄萍;张永亮;;安全与环境学报(第05期);全文 * |
| 大尺度单裂隙介质应力渗流耦合试验台架及其渗透系数测试研究;满轲;刘晓丽;苏锐;王驹;周宏伟;赵阳;;岩石力学与工程学报(第10期);全文 * |
| 支撑剂对单裂隙花岗岩的渗流特性与热交换影响试验研究;赵强;骆进;谭龙;朱永强;张琦;;地质科技情报(第06期);全文 * |
| 花岗岩单裂隙渗流传热特性试验;李正伟;张延军;张驰;许天福;;岩土力学(第09期);全文 * |
| 裂隙岩体热流模型研究;白兰兰;陈建生;王新建;刘长吉;;人民黄河(第05期);全文 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109270117A (en) | 2019-01-25 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN109270117B (en) | Data measuring device and method in seepage-heat transfer process of fracture sample | |
| CN109211971B (en) | Method for measuring convective heat transfer coefficient of water-rock interface in seepage heat transfer process of fracture sample | |
| CN109211972B (en) | Device for measuring water-rock interface convective heat transfer coefficient in seepage heat transfer process of fracture sample | |
| CN107991216B (en) | Fluid fracture seepage simulator under a kind of high temperature stress | |
| CN111220525B (en) | Supercritical carbon dioxide rock fracture seepage device under high-temperature and high-pressure conditions | |
| WO2021208379A1 (en) | Hydraulic fracturing simulation experiment device and experiment method | |
| CN109668926B (en) | Equivalent heat conductivity coefficient testing system and calculating method for fractured rock mass unit structure | |
| CN106285594B (en) | A kind of sand-filling tube combination device and its boundary temperature control method | |
| BR112013032103A2 (en) | method | |
| CN106353479B (en) | Full-hole core clamper and full-hole core are acidified simulator | |
| CN111879814B (en) | Fracture rock mass hydrothermal transmission mechanism experimental device and system | |
| CN112267873B (en) | Single-crack profile control and flooding visualization experiment device and method for simulating formation conditions | |
| CN108956854B (en) | Device for evaluating plugging performance of temporary plugging steering fluid and testing method thereof | |
| CN106950149A (en) | A kind of experimental provision and method for measuring overflow gas solubility | |
| CN107656036A (en) | A kind of HTHP dynamic joint seal gas-stopping effect evaluation experimental device and its evaluation method | |
| CA2637561A1 (en) | Apparatus and methods for measuring pressure using a formation tester | |
| CN115824916A (en) | Smooth parallel fractured rock mass seepage temperature measuring device and interpretation method thereof | |
| CN111425187A (en) | Eccentric heat insulation pressure bearing structure under petroleum well | |
| CN209102652U (en) | Data measurement unit in crack sample seepage flow-diabatic process | |
| CN110656918B (en) | Multi-scale crack two-phase flow simulation evaluation method | |
| CN108507694A (en) | A method of monitoring tunnel surrounding internal temperature | |
| CN209102653U (en) | The interface Shui Yan convection transfer rate measuring device in the sample seepage flow diabatic process of crack | |
| CN112683748B (en) | Device and method for testing dynamic permeability of coal rock in fracturing physical simulation process | |
| CN107201899A (en) | Formation fluid pressure measurement apparatus | |
| CN209724325U (en) | Pressure-measuring-point ice is stifled during preventing hydrate from hiding simulated experiment and the structure of de-plugging |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |