CN109682734B - Device and method for determining seepage characteristics of ultrahigh-pressure gas reservoir - Google Patents
Device and method for determining seepage characteristics of ultrahigh-pressure gas reservoir Download PDFInfo
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 46
- 238000012545 processing Methods 0.000 claims description 44
- 230000000007 visual effect Effects 0.000 claims description 37
- 239000011435 rock Substances 0.000 claims description 33
- 238000010438 heat treatment Methods 0.000 claims description 21
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- 238000005259 measurement Methods 0.000 claims description 11
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- 239000007789 gas Substances 0.000 description 139
- BVKZGUZCCUSVTD-UHFFFAOYSA-L Carbonate Chemical compound [O-]C([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-L 0.000 description 10
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 10
- 239000003345 natural gas Substances 0.000 description 5
- 238000011161 development Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 238000005070 sampling Methods 0.000 description 3
- 238000002474 experimental method Methods 0.000 description 2
- 238000005325 percolation Methods 0.000 description 2
- 239000003209 petroleum derivative Substances 0.000 description 2
- 238000003860 storage Methods 0.000 description 2
- 239000004696 Poly ether ether ketone Substances 0.000 description 1
- JUPQTSLXMOCDHR-UHFFFAOYSA-N benzene-1,4-diol;bis(4-fluorophenyl)methanone Chemical compound OC1=CC=C(O)C=C1.C1=CC(F)=CC=C1C(=O)C1=CC=C(F)C=C1 JUPQTSLXMOCDHR-UHFFFAOYSA-N 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
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Abstract
The embodiment of the invention provides a device and a method for measuring seepage characteristics of an ultrahigh-pressure gas reservoir. The device for measuring the seepage characteristics of the ultrahigh-pressure gas reservoir can simulate the confining pressure, the pressure and the temperature of the gas reservoir where the core is located, measure the seepage characteristics of the core, and provide effective and reliable basis for developing the gas reservoir where the core is located.
Description
Technical Field
The embodiment of the invention relates to petroleum and natural gas exploitation technology, in particular to a device and a method for measuring seepage characteristics of an ultrahigh-pressure gas reservoir.
Background
The production types of natural gas are various, and the occurrence state of industrial natural gas in the underground is far more than that of petroleum. There are also a number of oil and water soluble gases, adsorbed gases, and solid gas hydrates, among others. Thus, besides the conventional gas reservoirs formed by free gas, there are water-soluble gas reservoirs, water-sealed gas reservoirs, tight sandstone gas reservoirs, gas-water table gas reservoirs, and the like.
In recent years, the exploration and development of deep and ultra-deep carbonate reservoirs are valued at home and abroad, deep and ultra-deep natural gas resources and reserves are rich, and the development of the deep and ultra-deep carbonate reservoirs is an important way for increasing the total yield of petroleum and natural gas and has important significance for guaranteeing the energy safety.
However, because of the large depth of burial of carbonate reservoirs, reservoir rocks bear the huge pressure of rocks above, the rocks are in a compacted state, and the fluid pressure of the reservoirs is also high, the development difficulty of deep and ultra-deep carbonate reservoirs is great, for example, sichuan Gst reservoirs, the confining pressure reaches 135MPa, and the pressure of the reservoirs reaches 57MPa and the temperature 147 ℃. The seepage rules of deep and ultra-deep carbonate reservoirs are special and different from the conventional reservoirs. In order to realize the efficient development of the gas reservoirs, the seepage rules and seepage characteristics of the gas reservoirs need to be researched, so that the gas reservoirs are effectively developed.
Disclosure of Invention
The embodiment of the invention provides a device and a method for measuring the seepage characteristics of an ultrahigh-pressure gas reservoir, which are used for realizing the simulation of the confining pressure, the gas reservoir pressure and the temperature of the gas reservoir where a rock core is located, measuring the seepage characteristics of the rock core and providing effective and reliable basis for developing the gas reservoir where the rock core is located.
In a first aspect, embodiments of the present invention provide an apparatus for determining the seepage characteristics of an ultra-high pressure gas reservoir, comprising:
The device comprises a core holder, a high-pressure surrounding pressure pump, a high-pressure liquid pump, a high-pressure gas-water separation and metering component and a data processing module;
the core holder comprises a clamping part, a core sleeve made of perfluororubber, a shell and a heating sleeve, wherein the clamping part and the core sleeve are sleeved in the shell, a first cavity is formed between the clamping part and the core sleeve and is used for setting a core, a second cavity is formed between the core sleeve and the shell, and the heating sleeve is sleeved outside the shell;
The high-pressure confining pressure pump is used for providing confining pressure for the rock core through the second cavity, the confining pressure is equal to the confining pressure of the rock core in the stratum, the high-pressure liquid pump and the high-pressure gas pump are used for providing gas reservoir pressure of the rock core in the stratum for the rock core, and the heating sleeve is used for providing temperature of the rock core in the stratum for the rock core;
the high-pressure gas-water separation and metering component is used for measuring fluid produced from the core under high-pressure conditions and sending measurement results to the data processing module;
The data processing module is used for determining seepage characteristics of the rock core according to the measurement result;
The clamping part is made of super precipitated stainless steel materials, and the shell is made of super precipitated stainless steel materials.
Optionally, the device further includes a fluid pipeline, one end of the fluid pipeline is connected with the output end of the high-pressure liquid pump and the output end of the high-pressure gas pump respectively, and the other end of the fluid pipeline is connected with the clamping part and is communicated with the first cavity.
Optionally, the high-pressure gas-water separation and metering component comprises a high-pressure visual volume metering tube, a back pressure valve and a high-pressure back pressure pump;
One end of the high-pressure visual volume metering tube is connected with the fluid output end of the core holder, the other end of the high-pressure visual volume metering tube is connected with the back pressure valve, the back pressure valve is connected with the high-pressure back pressure pump, the back pressure valve and the high-pressure back pressure pump are used for providing back pressure for the fluid output end of the core holder, and the back pressure is equal to the gas reservoir pressure of the core in the stratum.
Optionally, the device further comprises a first pressure sensor and a first flowmeter, wherein the first pressure sensor is respectively connected with the high-pressure visual volume metering tube and the data processing module, and the first flowmeter is arranged between the back pressure valve and the high-pressure visual volume metering tube.
Optionally, the device further comprises a low pressure visual volume metering tube, a second pressure sensor and a second flowmeter, wherein the low pressure visual volume metering tube is connected with the back pressure valve, and the second pressure sensor and the second flowmeter are respectively arranged between the low pressure visual volume metering tube and the data processing module.
Optionally, the device further comprises a temperature controller and a temperature sensor, one end of the temperature controller is connected with the heating sleeve, the other end of the temperature controller is connected with the temperature sensor, and the temperature sensor is further connected with the data processing module.
Optionally, the device further comprises a third pressure sensor, a fourth pressure sensor and a fifth pressure sensor, wherein the third pressure sensor is connected to a fluid pipeline between the high-pressure liquid pump and the high-pressure gas pump, the fourth pressure sensor is connected to a fluid pipeline between the high-pressure gas pump and the clamping part, the fifth pressure sensor is connected to a fluid output end of the core holder, and the third pressure sensor, the fourth pressure sensor and the fifth pressure sensor are further connected with the data processing module;
the high-pressure surrounding pump, the high-pressure liquid pump, the high-pressure gas pump and the high-pressure return pump are further connected with the data processing module.
In a second aspect, an embodiment of the present invention provides a method for determining the characteristics of ultra-high pressure gas reservoir seepage using the apparatus according to any one of the first aspects, comprising: acquiring confining pressure, gas reservoir pressure and temperature of the rock core in the stratum; providing the confining pressure to the core in the core holder by the high pressure confining pressure pump; providing the reservoir pressure to the core by the high pressure liquid pump and the high pressure gas pump; providing the temperature to the core through the heating sleeve; obtaining the water yield in the high-pressure stage and the gas yield in the high-pressure stage according to the high-pressure visual volume metering tube; and determining the seepage characteristics of the core according to the water yield of the high-pressure stage and the gas yield of the high-pressure stage.
Optionally, the method further comprises: acquiring low-pressure stage water yield and low-pressure stage gas yield according to the low-pressure visual volume metering tube; and determining the seepage characteristics of the core according to the low-pressure stage water yield and the low-pressure stage gas yield.
Optionally, the providing, by the high-pressure confining pressure pump, the confining pressure to the core located in the core holder includes: injecting gas into the second cavity through the high-pressure surrounding pressure pump, so that the second cavity is filled with the gas; and injecting liquid into the second cavity through the high-pressure confining pressure pump, wherein the liquid is used for replacing the gas, and providing the confining pressure for the core in the core holder through the liquid.
The device and the method for measuring the seepage characteristics of the ultrahigh-pressure gas reservoir, provided by the embodiment of the invention, realize the confining pressure, the gas reservoir pressure and the temperature of the gas reservoir where the simulated core is positioned and measure the seepage characteristics of the core by the core holder 1, the high-pressure confining pressure pump 2, the high-pressure liquid pump 3, the high-pressure gas pump 4, the high-pressure gas-water separation and metering component 5 and the data processing module 6, and provide effective and reliable basis for developing the gas reservoir where the core is positioned. In addition, due to the high temperature resistance and high pressure resistance of the device, the device of the embodiment can measure the seepage characteristics of deep and ultra-deep gas reservoirs, and provide effective and reliable basis for exploiting deep and ultra-deep gas reservoirs.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions of the prior art, the drawings that are needed in the embodiments or the description of the prior art will be briefly described below, it will be obvious that the drawings in the following description are some embodiments of the present invention, and that other drawings can be obtained according to these drawings without inventive effort to a person skilled in the art.
FIG. 1 is a schematic view of an embodiment of the apparatus for determining the seepage characteristics of an ultra-high pressure gas reservoir according to the present invention;
FIG. 2 is a schematic diagram of a second embodiment of the apparatus for determining the seepage characteristics of an ultra-high pressure gas reservoir according to the present invention;
FIG. 3 is a schematic view of a third embodiment of the apparatus for determining the seepage characteristics of an ultra-high pressure gas reservoir according to the present invention;
FIG. 4 is a schematic view of the core holder of the present invention;
FIG. 5 is a flow chart of a method for measuring the seepage characteristics of an ultra-high pressure gas reservoir by using the device according to the first embodiment of the invention;
FIG. 6 is a flow chart of a second embodiment of the method for determining the seepage characteristics of an ultra-high pressure gas reservoir by using the device.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is apparent that the described embodiments are some embodiments of the present invention, but not all embodiments of the present invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Fig. 1 is a schematic structural diagram of a first embodiment of an apparatus for determining a seepage characteristic of an ultra-high pressure gas reservoir according to the present invention, and as shown in fig. 1, the apparatus for determining a seepage characteristic of the present embodiment may include: the device comprises a core holder 1, a high-pressure surrounding pressure pump 2, a high-pressure liquid pump 3, a high-pressure gas pump 4, a high-pressure gas-water separation and metering component 5 and a data processing module 6.
The core holder 1 may include a holding portion 11, a core sleeve 12 made of perfluororubber, a housing 13, and a heating sleeve 14, where the holding portion 11 and the core sleeve 12 are sleeved in the housing 13, a first cavity 15 is formed between the holding portion 11 and the core sleeve 12, the first cavity 15 is used for setting a core, a second cavity 16 is formed between the core sleeve 12 and the housing 13, and the heating sleeve 14 is sleeved outside the housing 13.
The core sleeve 12 made of perfluororubber has pressure resistance and high temperature resistance.
The high pressure confining pressure pump 4 is used for providing confining pressure to the rock core through the second cavity 16, the confining pressure is equal to the confining pressure of the rock core in the stratum, the high pressure liquid pump 3 and the high pressure gas pump 4 are used for providing gas reservoir pressure of the rock core in the stratum to the rock core, and the heating sleeve 14 is used for providing temperature of the rock core in the stratum to the rock core.
The high pressure gas-water separation and metering component 5 is used to measure the fluid produced from the core under high pressure conditions and send the measurement results to the data processing module 6.
Wherein the fluid comprises a gas and a liquid.
The data processing module 6 is used for determining the seepage characteristic of the core according to the measurement result.
The clamping part is made of super-precipitated stainless steel material, for example, 17-4PH stainless steel, and the shell is made of super-precipitated stainless steel material, for example, 17-4 PH. The compressive strength of the clamping part and the shell can reach more than 1300 MPa.
Specifically, the core may be obtained by sampling the formation, for example, by sampling deep or ultra-deep carbonate reservoirs. And measuring the confining pressure, the gas reservoir pressure and the temperature of the core in the stratum. The core obtained by sampling is placed in the first cavity 15 of the core holder 1, and is fixed by the clamping part 11. In order to simulate the seepage characteristics of the rock core in the gas reservoir, the device of the embodiment is used for simulating the physical conditions of the stratum where the rock core is located, and then the seepage characteristics of the rock core are researched under the physical conditions. Specifically, the high-pressure confining pressure pump 4 is used for providing confining pressure of the core in the stratum to the core through the second cavity 16, the high-pressure liquid pump 3 and the high-pressure gas pump 4 are used for providing gas reservoir pressure of the core in the stratum to the core, and the heating sleeve 14 is used for providing temperature of the core in the stratum to the core, so that physical conditions of the environment where the core is located in the device of the embodiment are identical to those of the stratum, and then fluid produced from the core is measured under the high-pressure condition through the high-pressure gas-water separation and metering component 5, and the measurement result is sent to the data processing module 6, so that seepage characteristics are determined according to the measurement result, the measured seepage characteristics are closer to actual conditions, and an effective and reliable basis is provided for developing the gas reservoir where the core is located.
According to the embodiment, the confining pressure, the gas reservoir pressure and the temperature of the gas reservoir where the core is located are simulated through the core holder 1, the high-pressure confining pressure pump 2, the high-pressure liquid pump 3, the high-pressure gas pump 4, the high-pressure gas-water separation and metering component 5 and the data processing module 6, the seepage characteristics of the core are measured, and an effective and reliable basis is provided for developing the gas reservoir where the core is located. In addition, due to the high temperature resistance and high pressure resistance of the device, the device of the embodiment can measure the seepage characteristics of deep and ultra-deep gas reservoirs, and provide effective and reliable basis for exploiting deep and ultra-deep gas reservoirs.
The device can simulate the seepage characteristics of a deep and ultra-deep gas reservoir with the measured pressure of 190MPa and the temperature of 200 ℃.
Fig. 2 is a schematic structural diagram of a second embodiment of the device for measuring seepage characteristics of an ultrahigh-pressure gas reservoir according to the present invention, and on the basis of the embodiment shown in fig. 1, as shown in fig. 2, the device for measuring seepage characteristics may further include a fluid pipeline, one end of which is connected to the output end of the high-pressure liquid pump 3 and the output end of the high-pressure gas pump 4, respectively, and the other end of which is connected to the clamping portion 11 and is in communication with the first cavity 15.
Specifically, as shown in fig. 2, in one implementation manner, the fluid pipeline includes a vertical fluid pipeline (71, 72 and 73) and a lateral fluid pipeline 74, the lateral fluid pipeline 74 is connected to the vertical fluid pipeline 71, the vertical fluid pipeline 72 and the vertical fluid pipeline 73, one end of the vertical fluid pipeline 71 is connected to the high-pressure liquid pump 3, for introducing the liquid of the high-pressure liquid pump into the lateral fluid pipeline 74, one end of the vertical fluid pipeline 72 is connected to the high-pressure gas pump 4, for introducing the gas of the high-pressure gas pump into the lateral fluid pipeline 74, and one end of the vertical fluid pipeline 73 is connected to the clamping part 11, for introducing the liquid and/or the gas in the lateral fluid pipeline 74 into the first cavity 15. The connection of the different pipelines can be realized by pipeline connectors. The piping connection may specifically employ a 30000psi explosion proof interface.
In another implementation, the fluid pipeline may be integrally formed as shown in fig. 2.
It will be appreciated that the shape of the fluid line may be flexibly set according to requirements, for example, when the positions of the high-pressure liquid pump and the high-pressure gas pump are different from those of the high-pressure liquid pump and the high-pressure gas pump shown in fig. 2, the distribution form of the fluid line may be other shapes, so as to achieve the introduction of the liquid and/or the gas into the first cavity 15.
Optionally, the placing manner of the core holder 1 may include standing, inverted placing and flat placing, which may be flexibly set according to actual requirements.
According to the embodiment, the confining pressure, the gas reservoir pressure and the temperature of the gas reservoir where the core is located are simulated through the core holder 1, the high-pressure confining pressure pump 2, the high-pressure liquid pump 3, the high-pressure gas pump 4, the high-pressure gas-water separation and metering component 5 and the data processing module 6, the seepage characteristics of the core are measured, and an effective and reliable basis is provided for developing the gas reservoir where the core is located. In addition, due to the high temperature resistance and high pressure resistance of the device, the device of the embodiment can measure the seepage characteristics of deep and ultra-deep gas reservoirs, and provide effective and reliable basis for exploiting deep and ultra-deep gas reservoirs. For example, the temperature and pressure conditions of the deep carbonate reservoir can be simulated, and the gas-water seepage experiment can be carried out under the temperature and pressure conditions of the deep carbonate reservoir.
Fig. 3 is a schematic structural view of a third embodiment of the device for measuring seepage characteristics of an ultra-high pressure gas reservoir according to the present invention, and on the basis of the embodiment shown in fig. 2, as shown in fig. 3, the high pressure gas-water separation and metering component 5 of the device for measuring seepage characteristics may specifically include a high pressure visual volume metering tube 51, a back pressure valve 52 and a high pressure back pressure pump 53.
One end of the high-pressure visual volume metering tube 51 is connected with the fluid output end of the core holder 1, the other end of the high-pressure visual volume metering tube is connected with the back pressure valve 52, the back pressure valve 52 is connected with the high-pressure back pressure pump 53, the back pressure valve 52 and the high-pressure back pressure pump 53 are used for providing back pressure for the fluid output end of the core holder 1, and the back pressure is equal to the gas reservoir pressure of the core in the stratum.
Specifically, water and/or gas in the core is produced through the lower end of the core holder 1, and the water and/or gas produced at the lower end of the core holder 1 can be separated by the high-pressure gas-water visual volumeter 51, and the volume of the produced gas and/or water in the high-pressure stage can be measured. The high pressure back pressure pump 53 generates a certain pressure to control the back pressure valve 52 to keep the pressure at the fluid producing end of the core holder 1 not lower than the bottom hole pressure of the gas well where the gas reservoir is located.
The high-pressure tubule of the high-pressure visual volume measuring tube 51 has a small cross-sectional area, and can realize accurate and micro measurement.
The device of the present embodiment may further comprise a first pressure sensor 81 and a first flowmeter 91, wherein the first pressure sensor 81 is connected to the high pressure visual volume metering tube 51 and the data processing module 6, respectively, and the first flowmeter 91 is disposed between the back pressure valve 52 and the high pressure visual volume metering tube 51.
Specifically, a first pressure sensor 81 may also be provided to measure the pressure and report the measured data to the data processing module 6. The first flow meter 91 is arranged to measure the flow of the produced gas in the high pressure stage and to report the measured data to the data processing module 6. To further assist in determining the percolation characteristics of the core.
The device of this embodiment may further comprise a low pressure visual volume meter 10, a second pressure sensor 82 and a second flowmeter 92, wherein the low pressure visual volume meter 10 is connected to the back pressure valve 52, and the second pressure sensor 82 and the second flowmeter 92 are respectively disposed between the low pressure visual volume meter 10 and the data processing module 6.
In particular, a low pressure visual volume metering tube 10 may also be provided, the low pressure visual volume metering tube 10 being capable of determining the volume of gas and/or water produced during the low pressure phase. To further assist in determining the percolation characteristics of the core.
The device of this embodiment may further include a temperature controller 20 and a temperature sensor 21, one end of the temperature controller 20 is connected to the heating sleeve 14, the other end of the temperature controller 20 is connected to the temperature sensor 21, and the temperature sensor 21 is further connected to the data processing module 6.
Specifically, the temperature controller 20 can set the temperature of the heating sleeve to the temperature of the stratum where the core is located according to the indication of the data processing module 6, and the temperature sensor 21 is used for collecting the real-time temperature of the heating sleeve 14 and sending the measured data to the data processing module 6 as feedback of temperature adjustment, so that the data processing module 6 can heat the temperature of the core to the temperature of the stratum where the core is located through the temperature controller in time.
The device of the present embodiment may further include a third pressure sensor 83, a fourth pressure sensor 84 and a fifth pressure sensor 85, where the third pressure sensor 83 is connected to a fluid pipeline between the high-pressure liquid pump 3 and the high-pressure gas pump 4, the fourth pressure sensor 84 is connected to a fluid pipeline between the high-pressure gas pump 4 and the clamping portion 11, the fifth pressure sensor 85 is connected to a fluid output end of the core holder 1, and the third pressure sensor 83, the fourth pressure sensor 84 and the fifth pressure sensor 85 are further connected to the data processing module 6;
The high-pressure confining pressure pump 2, the high-pressure liquid pump 3, the high-pressure gas pump 4 and the high-pressure return pressure pump 53 are also connected with the data processing module 6.
Specifically, the data processing module acquires the pressure sensors in real time and tracks the rising and falling of the gas reservoir pressure of the core, and the stress state of the core is kept the same as or similar to the gas reservoir condition by controlling the high-pressure surrounding pump 2, the high-pressure liquid pump 3, the high-pressure gas pump 4 and the high-pressure back pressure pump 53.
Optionally, the device of this embodiment may further be provided with a plurality of valves, as shown in fig. 3, a valve 501 at the output end of the high-pressure liquid pump 3, a valve 502 at the output end of the high-pressure gas pump 4, a valve 503 on the lateral fluid line 74, a valve 504 at the output end of the high-pressure confining pump 2, a valve 505 at the fluid output end of the core holder 1, a valve 506 at the output end of the high-pressure back-pressure pump 53, and a valve 507 at the input end of the low-pressure visual volume metering tube 10.
According to the embodiment, the confining pressure, the gas reservoir pressure and the temperature of the gas reservoir where the core is located are simulated through the core holder 1, the high-pressure confining pressure pump 2, the high-pressure liquid pump 3, the high-pressure gas pump 4, the high-pressure gas-water separation and metering component 5 and the data processing module 6, the seepage characteristics of the core are measured, and an effective and reliable basis is provided for developing the gas reservoir where the core is located. In addition, due to the high temperature resistance and high pressure resistance of the device, the device of the embodiment can measure the seepage characteristics of deep and ultra-deep gas reservoirs, and provide effective and reliable basis for exploiting deep and ultra-deep gas reservoirs. For example, the temperature and pressure conditions of the deep carbonate reservoir can be simulated, and the gas-water seepage experiment can be carried out under the temperature and pressure conditions of the deep carbonate reservoir.
The device can realize accurate measurement of pressure, flow and fluid volume, and further calculate the volume of the gas reservoir, the saturation of the gas reservoir and the viscosity of the gas reservoir so as to determine the seepage characteristics of the gas reservoir and output a saturation-phase seepage relation curve.
Fig. 4 is a schematic structural view of a core holder according to the present invention, and as shown in fig. 4, the core holder may specifically include a holding portion 11, a core sleeve 12 made of perfluororubber, a housing 13, and a heating sleeve 14.
The clamping portion 11 may specifically include a left plug 111, a gasket 112, an O-ring 113, a gasket 114, a locking seal 115, a right core plug 116, a right plug 117, a PEEK gasket 118, an O-ring 119, and a small pressure cap 120.
The O-rings 113 and 118 may be O-rings made of perfluororubber. The gasket 112 is a 9-grade O-ring seal.
In this embodiment, the core holder has the characteristics of high pressure resistance and high temperature resistance by providing the core sleeve 12 made of perfluororubber and the sealing gasket made of the 9-level hardness O-ring.
Fig. 5 is a flowchart of a first embodiment of a method for determining the seepage characteristics of an ultrahigh-pressure gas reservoir by using the device of the present invention, where, as shown in fig. 5, the method of the present embodiment may include:
and 101, acquiring confining pressure, gas reservoir pressure and temperature of the core in the stratum.
Specifically, the confining pressure, the gas reservoir pressure and the temperature of the rock core of the gas reservoir, which are actually required to be measured, in the stratum are obtained.
The specific implementation manner may be that the confining pressure, the gas reservoir pressure and the temperature obtained by measurement are input into the data processing module 6 of the device, so that the data processing module 6 obtains the confining pressure, the gas reservoir pressure and the temperature of the core in the stratum.
Step 102, providing the confining pressure to the core in the core holder through the high-pressure confining pressure pump.
Specifically, the data processing module of the device can control the high-pressure confining pressure pump 2 to provide confining pressure obtained in step 101 to the core in the core holder 1.
Step 103, providing the reservoir pressure to the core through the high-pressure liquid pump and the high-pressure gas pump.
Specifically, the data processing module of the device can control the high-pressure liquid pump 3 and the high-pressure gas pump 4 to provide the reservoir pressure acquired in step 101 to the core in the core holder 1.
Step 104, providing the temperature to the core through the heating sleeve.
Specifically, the data processing module of the above device may provide the temperature obtained in step 101 to the core in the core holder 1 by heating the sleeve 14.
And 105, acquiring the water yield and the gas yield of the high-pressure stage according to the high-pressure visual volume metering tube.
Specifically, the data processing module of the device can acquire the water yield in the high-pressure stage and the gas yield in the high-pressure stage from the high-pressure visual volume metering tube.
And 106, measuring the seepage characteristics of the core according to the water yield of the high-pressure stage and the gas yield of the high-pressure stage.
Specifically, the data processing module of the device can determine the seepage characteristic of the core according to the water yield of the high-pressure stage and the gas yield of the high-pressure stage, for example, output a saturation-phase seepage relation curve.
According to the embodiment, the confining pressure, the gas reservoir pressure and the temperature of the gas reservoir where the core is located can be simulated, the seepage characteristics of the core can be measured, and an effective and reliable basis is provided for developing the gas reservoir where the core is located.
Fig. 6 is a flowchart of a second embodiment of a method for determining the seepage characteristics of an ultrahigh-pressure gas reservoir by using the device of the present invention, where, as shown in fig. 6, the method of this embodiment may include:
Step 201, obtaining confining pressure, gas reservoir pressure and temperature of the core in the stratum.
Step 202, providing the confining pressure to the core in the core holder through the high-pressure confining pressure pump.
Step 203, providing the gas reservoir pressure to the core through the high-pressure liquid pump and the high-pressure gas pump;
step 204, providing the temperature to the core through the heating sleeve.
And 205, acquiring the water yield and the gas yield of the high-pressure stage according to the high-pressure visual volume metering tube.
The specific explanation of step 201 to step 205 may be referred to above in step 101 to step 105, and will not be repeated here.
And 206, acquiring the water yield and the gas yield of the low-pressure stage according to the low-pressure visual volume metering tube.
The data processing module of the device can acquire the low-pressure stage water yield and the low-pressure stage gas yield from the low-pressure visual volume metering tube.
Step 207, determining the seepage characteristic of the core according to the high-pressure stage water yield, the high-pressure stage gas yield, the low-pressure stage water yield and the low-pressure stage gas yield.
Specifically, the data processing module of the device can measure the seepage characteristics of the core according to the high-pressure stage water yield, the high-pressure stage gas yield, the low-pressure stage water yield, the low-pressure stage gas yield and the flow, for example, output saturation-phase seepage relation curves.
According to the embodiment, the confining pressure, the gas reservoir pressure and the temperature of the gas reservoir where the core is located can be simulated, the seepage characteristics of the core can be measured, and an effective and reliable basis is provided for developing the gas reservoir where the core is located.
In the embodiments shown in fig. 5 and 6, the providing, by the high-pressure confining pressure pump, the confining pressure to the core located in the core holder may specifically include: injecting gas into the second cavity through the high-pressure surrounding pressure pump, so that the second cavity is filled with the gas; and injecting liquid into the second cavity through the high-pressure confining pressure pump, wherein the liquid is used for replacing the gas, and providing the confining pressure for the core in the core holder through the liquid.
Namely, when the pressure is low, the second cavity is closed by air pressure, confining pressure is added to the rock core, and the defect of inaccurate permeability caused by water leakage is overcome by the air confining pressure. After the pressure is raised, water is used for replacing gas, and water is used for further raising the confining pressure until the original stratum state is reached. The determination accuracy of seepage characteristics can be effectively improved.
Those of ordinary skill in the art will appreciate that: all or part of the steps for implementing the method embodiments described above may be performed by hardware associated with program instructions. The foregoing program may be stored in a computer readable storage medium. The program, when executed, performs steps including the method embodiments described above; and the aforementioned storage medium includes: various media that can store program code, such as ROM, RAM, magnetic or optical disks.
Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present invention, and not for limiting the same; although the invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some or all of the technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit of the invention.
Claims (6)
1. An apparatus for determining the seepage characteristics of an ultra-high pressure gas reservoir, comprising:
The device comprises a core holder, a high-pressure surrounding pressure pump, a high-pressure liquid pump, a high-pressure gas-water separation and metering component, a data processing module, a temperature controller, a temperature sensor, a third pressure sensor, a fourth pressure sensor and a fifth pressure sensor;
the core holder comprises a clamping part, a core sleeve made of perfluororubber, a shell and a heating sleeve, wherein the clamping part and the core sleeve are sleeved in the shell, a first cavity is formed between the clamping part and the core sleeve and is used for setting a core, a second cavity is formed between the core sleeve and the shell, and the heating sleeve is sleeved outside the shell;
The high-pressure confining pressure pump is used for providing confining pressure for the rock core through the second cavity, the confining pressure is equal to the confining pressure of the rock core in the stratum, the high-pressure liquid pump and the high-pressure gas pump are used for providing gas reservoir pressure of the rock core in the stratum for the rock core, and the heating sleeve is used for providing temperature of the rock core in the stratum for the rock core;
the high-pressure gas-water separation and metering component is used for measuring and acquiring the water yield and the gas yield of the high-pressure stage under the high-pressure condition and sending the measurement results to the data processing module;
The data processing module is used for determining seepage characteristics of the rock core according to the measurement result;
the clamping part is made of super precipitated stainless steel material, and the shell is made of super precipitated stainless steel material;
one end of the temperature controller is connected with the heating sleeve, the other end of the temperature controller is connected with the temperature sensor, and the temperature sensor is also connected with the data processing module;
The third pressure sensor is connected with a fluid pipeline between the high-pressure liquid pump and the high-pressure gas pump, the fourth pressure sensor is connected with a fluid pipeline between the high-pressure gas pump and the clamping part, the fifth pressure sensor is connected with a fluid output end of the core holder, and the third pressure sensor, the fourth pressure sensor and the fifth pressure sensor are further connected with the data processing module;
the high-pressure surrounding pump, the high-pressure liquid pump, the high-pressure gas pump and the high-pressure return pump are also connected with the data processing module;
The device also comprises a fluid pipeline, wherein the fluid pipeline comprises a first vertical fluid pipeline, a second vertical fluid pipeline, a third vertical fluid pipeline and a transverse fluid pipeline, the transverse fluid pipeline is respectively connected with the first vertical fluid pipeline, the second vertical fluid pipeline and the third vertical fluid pipeline, one end of the first vertical fluid pipeline is connected with the high-pressure liquid pump and is used for guiding liquid of the high-pressure liquid pump into the transverse fluid pipeline, one end of the second vertical fluid pipeline is connected with the high-pressure gas pump and is used for guiding gas of the high-pressure gas pump into the transverse fluid pipeline, and one end of the third vertical fluid pipeline is connected with the clamping part and is used for guiding liquid and/or gas in the transverse fluid pipeline into the first cavity;
the high-pressure gas-water separation and metering component comprises a high-pressure visual volume metering tube, a back pressure valve and a high-pressure back pressure pump;
one end of the high-pressure visual volume metering tube is connected with the fluid output end of the core holder, the other end of the high-pressure visual volume metering tube is connected with the back pressure valve, the back pressure valve is connected with the high-pressure back pressure pump, and the high-pressure back pressure pump generates a pressure control back pressure valve so as to keep the pressure of the fluid output end of the core holder equal to the pressure of a gas reservoir of the core in a stratum.
2. The apparatus of claim 1, further comprising a first pressure sensor and a first flow meter, the first pressure sensor being coupled to the high pressure visual volume metering tube and the data processing module, respectively, the first flow meter being disposed between the back pressure valve and the high pressure visual volume metering tube.
3. The apparatus of claim 1 or 2, further comprising a low pressure visual volume metering tube connected to the back pressure valve, a second pressure sensor and a second flow meter disposed between the low pressure visual volume metering tube and the data processing module, respectively.
4. A method of determining the permeability characteristics of an ultra-high pressure gas reservoir using the apparatus of any one of claims 1 to 3, comprising:
Acquiring confining pressure, gas reservoir pressure and temperature of the rock core in the stratum;
providing the confining pressure to the core in the core holder by the high pressure confining pressure pump;
providing the reservoir pressure to the core by the high pressure liquid pump and the high pressure gas pump;
Providing the temperature to the core through the heating sleeve;
obtaining the water yield in the high-pressure stage and the gas yield in the high-pressure stage according to the high-pressure visual volume metering tube;
And determining the seepage characteristics of the core according to the water yield of the high-pressure stage and the gas yield of the high-pressure stage.
5. The method according to claim 4, wherein the method further comprises:
Obtaining low-pressure stage water yield and low-pressure stage gas yield according to a low-pressure visual volume metering tube;
And determining the seepage characteristics of the core according to the low-pressure stage water yield and the low-pressure stage gas yield.
6. The method of claim 4 or 5, wherein the providing the confining pressure to the core in the core holder by the high pressure confining pressure pump comprises:
Injecting gas into the second cavity through the high-pressure surrounding pressure pump, so that the second cavity is filled with the gas;
and injecting liquid into the second cavity through the high-pressure confining pressure pump, wherein the liquid is used for replacing the gas, and providing the confining pressure for the core in the core holder through the liquid.
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Citations (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101608939A (en) * | 2009-07-22 | 2009-12-23 | 中国石油天然气股份有限公司 | High-temperature high-pressure visual micro-flow measuring instrument and measuring method |
| CN102466532A (en) * | 2010-11-11 | 2012-05-23 | 中国石油天然气股份有限公司 | Method and device for testing gas seepage starting pressure in core |
| CN102507414A (en) * | 2011-11-22 | 2012-06-20 | 中国石油天然气股份有限公司 | Rock core permeability experimental test method and device under formation pressure condition |
| CN104132880A (en) * | 2014-07-24 | 2014-11-05 | 重庆大学 | Permeability testing experimental method of reservoir core before and after hydraulic fracturing under triaxial stress condition |
| CN104330344A (en) * | 2014-10-27 | 2015-02-04 | 中国石油天然气股份有限公司 | Core gas-water two-phase seepage dynamic testing method and device |
| CN104568678A (en) * | 2015-01-13 | 2015-04-29 | 西南石油大学 | Device and method for testing gas-liquid sulfur phase permeation curve of high-temperature high-pressure high-sulfur-content gas reservoir |
| CN104764859A (en) * | 2015-04-13 | 2015-07-08 | 西南石油大学 | Evaluation instrument for damage of aqueous phase trapping of high-temperature high-pressure tight gas reservoir |
| CN204933209U (en) * | 2015-08-11 | 2016-01-06 | 中国石油天然气股份有限公司 | Gas-water separation device for core physical simulation experiment |
| CN105403497A (en) * | 2015-12-08 | 2016-03-16 | 中国石油天然气股份有限公司 | Core permeability evolution simulation method and system |
| CN106290786A (en) * | 2016-08-04 | 2017-01-04 | 中国海洋石油总公司 | A kind of heavy crude heat extraction rock core displacement test device and experiment pressure reduction antihunt means thereof |
| CN106525690A (en) * | 2016-12-02 | 2017-03-22 | 中国石油天然气股份有限公司 | Method for measuring gas-water relative permeability curve by tight sandstone steady-state method |
| CN206038673U (en) * | 2016-08-04 | 2017-03-22 | 中国石油大学(北京) | A device for evaluating mobile lower limit of reservoir |
| CN206091976U (en) * | 2016-10-21 | 2017-04-12 | 西南石油大学 | Experimental apparatus is invaded to high pressure -break nature gas reservoir water of simulation high temperature |
| CN107063963A (en) * | 2016-12-28 | 2017-08-18 | 浙江海洋大学 | A kind of compact reservoir microcrack extension and the test device and method of seepage flow characteristics |
| CN207610963U (en) * | 2017-10-19 | 2018-07-13 | 中国石油大学(北京) | Device for measuring super-pressure gas reservoir seepage flow characteristics |
-
2017
- 2017-10-19 CN CN201710974492.8A patent/CN109682734B/en active Active
Patent Citations (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101608939A (en) * | 2009-07-22 | 2009-12-23 | 中国石油天然气股份有限公司 | High-temperature high-pressure visual micro-flow measuring instrument and measuring method |
| CN102466532A (en) * | 2010-11-11 | 2012-05-23 | 中国石油天然气股份有限公司 | Method and device for testing gas seepage starting pressure in core |
| CN102507414A (en) * | 2011-11-22 | 2012-06-20 | 中国石油天然气股份有限公司 | Rock core permeability experimental test method and device under formation pressure condition |
| CN104132880A (en) * | 2014-07-24 | 2014-11-05 | 重庆大学 | Permeability testing experimental method of reservoir core before and after hydraulic fracturing under triaxial stress condition |
| CN104330344A (en) * | 2014-10-27 | 2015-02-04 | 中国石油天然气股份有限公司 | Core gas-water two-phase seepage dynamic testing method and device |
| CN104568678A (en) * | 2015-01-13 | 2015-04-29 | 西南石油大学 | Device and method for testing gas-liquid sulfur phase permeation curve of high-temperature high-pressure high-sulfur-content gas reservoir |
| CN104764859A (en) * | 2015-04-13 | 2015-07-08 | 西南石油大学 | Evaluation instrument for damage of aqueous phase trapping of high-temperature high-pressure tight gas reservoir |
| CN204933209U (en) * | 2015-08-11 | 2016-01-06 | 中国石油天然气股份有限公司 | Gas-water separation device for core physical simulation experiment |
| CN105403497A (en) * | 2015-12-08 | 2016-03-16 | 中国石油天然气股份有限公司 | Core permeability evolution simulation method and system |
| CN106290786A (en) * | 2016-08-04 | 2017-01-04 | 中国海洋石油总公司 | A kind of heavy crude heat extraction rock core displacement test device and experiment pressure reduction antihunt means thereof |
| CN206038673U (en) * | 2016-08-04 | 2017-03-22 | 中国石油大学(北京) | A device for evaluating mobile lower limit of reservoir |
| CN206091976U (en) * | 2016-10-21 | 2017-04-12 | 西南石油大学 | Experimental apparatus is invaded to high pressure -break nature gas reservoir water of simulation high temperature |
| CN106525690A (en) * | 2016-12-02 | 2017-03-22 | 中国石油天然气股份有限公司 | Method for measuring gas-water relative permeability curve by tight sandstone steady-state method |
| CN107063963A (en) * | 2016-12-28 | 2017-08-18 | 浙江海洋大学 | A kind of compact reservoir microcrack extension and the test device and method of seepage flow characteristics |
| CN207610963U (en) * | 2017-10-19 | 2018-07-13 | 中国石油大学(北京) | Device for measuring super-pressure gas reservoir seepage flow characteristics |
Non-Patent Citations (6)
| Title |
|---|
| Experimental of Mechanical Properties and Gas Flow of Containing-Gas Coal Under Different Unloading Speeds of Confining Pressure;Jiang C 等;Procedia Engineering;第1380-1384页 * |
| 储层应力敏感对异常高压低渗气藏采收率的影响;向祖平 等;重庆科技学院学报(自然科学版);第17卷(第5期);第64-67页 * |
| 加压时间对储层岩心渗透率的影响;杨胜来 等;中国石油大学学报(自然科学版)(第01期);第64-67页 * |
| 岩心渗透率的精确计算方法及其适用范围实验研究;李奇;高树生;刘华勋;叶礼友;盖兆贺;;西安石油大学学报(自然科学版)(第02期);第69-74页 * |
| 碳酸盐岩气藏水侵动态物理模拟实验研究;方飞飞 等;2016年全国天然气学术年会论文集;第791-799页 * |
| 边、底水气藏水侵规律可视化实验研究;方飞飞;李熙喆;高树生;薛蕙;朱文卿;刘华勋;安为国;李程辉;;天然气地球科学;27(第12期);第2246-2251页 * |
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