CN209764675U - Multifunctional rock core saturated fluid device - Google Patents
Multifunctional rock core saturated fluid device Download PDFInfo
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- CN209764675U CN209764675U CN201920389948.9U CN201920389948U CN209764675U CN 209764675 U CN209764675 U CN 209764675U CN 201920389948 U CN201920389948 U CN 201920389948U CN 209764675 U CN209764675 U CN 209764675U
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Abstract
The utility model relates to a rock core saturation device in a simulation test of natural gas and oil exploitation, in particular to a multifunctional rock core saturation fluid device, which comprises a vacuum-pumping pipeline and a saturated liquid conveying pipeline; the front end of the vacuumizing pipeline is provided with a vacuumizing pump set which comprises a vacuumizing pump and a molecular pump; the rear end of the front end of the vacuumizing pipeline is provided with two bypass pipes, one of the two bypass pipes is communicated with the inner cavity of the saturated liquid storage tank, the tail end of one of the two bypass pipes is communicated with the tail end of the saturated liquid storage tank through at least one communicating pipe a, and the tail end of each communicating pipe a is provided with a saturation chamber. Adopt the structure, improved the saturation, reduced error and simple structure, but the many different rock cores of concurrent multi-pressure test has improved follow-up test efficiency.
Description
Technical Field
The utility model relates to a natural gas and oil development analogue test in about rock core saturation device specifically are a multi-functional rock core saturated fluid device who improves the saturation, reduces error and simple structure.
Background
in the development of natural gas and petroleum, the accuracy of core saturation simulation in the early stage directly influences the accuracy of subsequent research, and the subsequent research roughly comprises core displacement experiments, core porosity testing experiments, core permeability experiments and other related research experiments. The formation fluid saturation is to vacuumize a saturated liquid pipeline and a saturated chamber, completely discharge air in the pores of the core, and fill the pores of the core with liquid in a vacuum state, so that the core is fully soaked and absorbed.
A multifunctional rock core saturated fluid device with the existing structure is directly provided with a vacuum pump, a saturated liquid storage tank and a saturation chamber on a pipeline, and the saturated liquid storage tank is communicated with the saturation chamber through a by-pass pipe. When the structure is used, the saturation experiment can be performed on a single rock core under the same pressure, the test efficiency is low, and the saturation degree is poor, so that the subsequent test error is large.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a improve saturation, reduce error and simple structure's a multi-functional rock core saturated fluid device.
In order to realize the technical purpose, the utility model discloses a technical scheme as follows:
A multifunctional core saturated fluid device comprises a vacuum pumping pipeline and a saturated liquid conveying pipeline; the method is characterized in that: the vacuum pumping unit is arranged at the front end of the vacuum pumping pipeline and comprises a vacuum pumping pump and a molecular pump, wherein the vacuum pumping pump and the molecular pump are controlled to be opened and closed by a control cabinet with a PLC control sheet, the vacuum pumping pump and the molecular pump are communicated with the front end of the vacuum pumping pipeline by mutually independent bypass pipes, an electric valve a is arranged on each bypass pipe, and the opening and closing of the electric valve a are controlled by the control cabinet with the PLC control sheet;
The tail end of one of the two by-pass pipes is communicated with the saturated liquid storage tank through at least one communicating pipe a, the tail end of each communicating pipe a is provided with a saturation chamber, the bottom of the saturation chamber is provided with an emptying pipe communicated with the inner cavity of the saturation chamber, the emptying pipe at the position of the saturation chamber is provided with an electric valve c, and each communicating pipe a is provided with an electric valve d;
The emptying pipe at the position of the liquid storage tank is communicated with a saturated liquid conveying pipeline, the liquid inlet end of the saturated liquid conveying pipeline is positioned on the pipe section of the emptying pipe between an electric valve b and the bottom of the saturated liquid storage tank, the liquid outlet end of the saturated liquid conveying pipeline is communicated with the inner cavity of the saturation chamber through bypass conveying pipes, each bypass conveying pipe is provided with an electric valve e, and the position close to the liquid outlet end of the saturated liquid conveying pipeline is provided with an electric valve f;
the saturated liquid conveying pipelines on two sides of the electric valve f are communicated through a pressurizing pipe, a manual pressurizing pump is arranged on the pressurizing pipe, and the pressurizing pipes on two sides of the manual pressurizing pump are respectively provided with an electric valve g and an electric valve h;
a pressure gauge I is arranged on the pressure pipe between the manual pressure pump and the electric valve h; a pressure gauge II is arranged on the bypass conveying pipe between each saturation chamber and the electric valve e; a pressure gauge III is arranged on the vacuum-pumping pipeline;
The electric valves b, c, d, e, f, g and h are all electrically connected with a control cabinet with a PLC control sheet through wires.
Compared with the prior art, the utility model the advantage that has is: the saturation is improved, the error is reduced, the structure is simple, multiple-pressure and multiple-different-core tests can be performed at the same time, and the subsequent test efficiency is improved.
Drawings
The invention can be further illustrated by means of non-limiting examples given in the figures.
fig. 1 is a schematic structural diagram of the present invention.
Detailed Description
in order to make the present invention better understood by those skilled in the art, the technical solutions of the present invention are further described below with reference to the accompanying drawings and examples.
Referring to the attached figure 1, the multifunctional core saturated fluid device comprises a vacuum pumping pipeline 1 and a saturated liquid conveying pipeline 2; the method is characterized in that: the vacuum pumping unit is arranged at the front end of the vacuum pumping pipeline 1 and comprises a vacuum pumping pump 3 and a molecular pump 4, wherein the vacuum pumping pump 3 and the molecular pump 4 are controlled to be opened and closed by a control cabinet 5 with a PLC control sheet, the vacuum pumping pump 3 and the molecular pump 4 are communicated with the front end of the vacuum pumping pipeline 1 through mutually independent bypass pipes, an electric valve a6 is arranged on each bypass pipe, and the opening and closing of the electric valve a6 are controlled by the control cabinet 5 with the PLC control sheet;
the rear end of the front end of the vacuumizing pipeline 1 is provided with two by-pass pipes, one by-pass pipe of the two by-pass pipes is communicated with the inner cavity of a saturated liquid storage tank 7, the bottom of the saturated liquid storage tank 7 is provided with an emptying pipe 8 communicated with the inner cavity of the saturated liquid storage tank, the tail end of the emptying pipe 8 is provided with an electric valve b9, the tail end of one by-pass pipe of the two by-pass pipes is communicated with the saturated liquid storage tank through at least one communicating pipe a10, the tail end of each communicating pipe a10 is provided with a saturation chamber 11, the bottom of the saturation chamber 11 is provided with an emptying pipe communicated with the inner cavity of the saturation chamber 11, the emptying pipe at the position of the saturation chamber 11 is provided with an electric valve c 12;
the emptying pipe 8 at the position of the liquid storage tank 7 is communicated with the saturated liquid conveying pipeline 2, the liquid inlet end of the saturated liquid conveying pipeline 2 is positioned on the pipe section of the emptying pipe 8 between the electric valve b9 and the bottom of the saturated liquid storage tank 7, the liquid outlet end of the saturated liquid conveying pipeline 2 is communicated with the inner cavity of the saturation chamber 11 through a bypass conveying pipe 14, each bypass conveying pipe 14 is provided with an electric valve e15, and the electric valve f16 is arranged at the position close to the liquid outlet end of the saturated liquid conveying pipeline 2;
The saturated liquid conveying pipelines 2 at two sides of the electric valve f16 are communicated through a pressurizing pipe 17, a manual pressurizing pump 18 is arranged on the pressurizing pipe 17, and the pressurizing pipes 17 at two sides of the manual pressurizing pump 18 are respectively provided with an electric valve g19 and an electric valve h 20;
A pressure gauge I21 is arranged on the pressurizing pipe 17 between the manual pressurizing pump 18 and the electric valve h 20; a pressure gauge II 22 is arranged on the bypass conveying pipe 14 between each saturation chamber 11 and the electric valve e 15; a pressure gauge III 23 is arranged on the vacuum-pumping pipeline 1;
the electric valve b9, the electric valve c12, the electric valve d13, the electric valve e15, the electric valve f16, the electric valve g19 and the electric valve h20 are all electrically connected with the control cabinet 5 with a PLC control panel through wires. In this embodiment, in order to make the liquid be fully absorbed by the core, during the soaking process, the manual pressure pump 18 may apply a certain external pressure to the core and the liquid to make the liquid completely fill the pores of the core, and the external pressure may be determined according to the porosity and the density of the core. The saturated liquid storage tank 7 is used for evacuating the core, pressurizing and saturating the oil and water for the experiment. The vacuumizing pump set improves the vacuum degree by using a vacuum unit, and the core is saturated more fully by adding measures such as high-pressure saturation and the like. The saturation is improved, the error is reduced, the structure is simple, a plurality of saturation chambers 11 can be used for testing multiple and different rock cores under multiple pressures at the same time, and the test efficiency is improved. The multi-pressure and multi-different-core test means that different cores can be tested under the same pressure condition, the same or different cores can be tested under multiple total pressures, and the selection is diversified according to actual experiment requirements. The arrangement of the molecular pump 4 effectively improves the vacuum degree of the whole device, and the vacuum pump 3 adopts a market-sold FJ-110 type, thereby giving consideration to the service life of the whole device. The a electric valve 6, the electric valve b9, the electric valve c12, the electric valve d13, the electric valve e15, the electric valve f16, the electric valve g19 and the electric valve h20 are all electrically connected with the control cabinet 5 with a PLC control panel through wires, which are not shown in the drawing. At the improvement degree of automation, all manometer can be replaced by pressure sensor, and are connected with 5 electricity of switch board that have the PLC control chip.
In order to prevent the saturated liquid from flowing back into the vacuum pump group, in the above embodiment, preferably: a buffer tank 24 is arranged on the vacuumizing pipeline 1 between the pressure gauge III 23 and the vacuumizing pump set, an emptying pipe is arranged at the bottom of the buffer tank 24, an electric valve j25 is arranged on the emptying pipe, and the electric valve j25 is electrically connected with a control cabinet 5 with a PLC control sheet through a lead.
In order to take account of the occupied area of the whole device, in the above embodiment, it is preferable that: the number of the saturation chambers 11 is three or six. In the present embodiment, the volumes of the inner cavities of the three saturation chambers 11 or the six saturation chambers 11 are different.
The advantages brought by the structure are as follows:
1) different liquids can be simultaneously saturated in different modes aiming at core samples with different lithology so as to improve the efficiency;
2) The vacuum pumping pump group consisting of the vacuum pump and the molecular pump enhances the vacuum pumping effect and improves the degree of saturated fluid of the sample;
3) before the fluid contacts the rock core, a fluid vacuumizing link is added. Under the action of gravity, the fluid enters the core saturation chamber. And gas dissolved in the liquid is prevented from entering the pores of the core.
all the parts are commercially available products.
It is right above the utility model provides a pair of multi-functional rock core saturated fluid device introduces in detail. The description of the specific embodiments is only intended to facilitate an understanding of the method of the invention and its core ideas. It should be noted that, for those skilled in the art, without departing from the principle of the present invention, the present invention can be further modified and modified, and such modifications and modifications also fall within the protection scope of the appended claims.
Claims (4)
1. A multifunctional core saturated fluid device comprises a vacuum pumping pipeline (1) and a saturated liquid conveying pipeline (2); the method is characterized in that: the vacuum pumping unit is arranged at the front end of the vacuum pumping pipeline (1), and comprises a vacuum pumping pump (3) and a molecular pump (4), wherein the vacuum pumping pump (3) and the molecular pump (4) are controlled to be opened and closed by a control cabinet (5) with a PLC control sheet, the vacuum pumping pump (3) and the molecular pump (4) are communicated with the front end of the vacuum pumping pipeline (1) through mutually independent bypass pipes, an electric valve a (6) is arranged on each bypass pipe, and the electric valve a (6) is controlled to be opened and closed by the control cabinet (5) with the PLC control sheet;
Two by-pass pipes are arranged at the rear end of the front end of the vacuumizing pipeline (1), one of the two by-pass pipes is communicated with an inner cavity of a saturated liquid storage tank (7), an emptying pipe (8) communicated with the inner cavity of the saturated liquid storage tank (7) is arranged at the bottom of the saturated liquid storage tank, and an electric valve b (9) is arranged at the tail end of the emptying pipe (8); the tail end of one of the two by-pass pipes is communicated with the tail end of the two by-pass pipes through at least one communicating pipe a (10), a saturation chamber (11) is arranged at the tail end of each communicating pipe a (10), an emptying pipe communicated with the inner cavity of the saturation chamber (11) is arranged at the bottom of the saturation chamber (11), an electric valve c (12) is arranged on the emptying pipe at the position of the saturation chamber (11), and an electric valve d (13) is arranged on each communicating pipe a (10);
An emptying pipe (8) at the position of the liquid storage tank (7) is communicated with a saturated liquid conveying pipeline (2), the liquid inlet end of the saturated liquid conveying pipeline (2) is positioned on the pipe section of the emptying pipe (8) between an electric valve b (9) and the bottom of the saturated liquid storage tank (7), the liquid outlet end of the saturated liquid conveying pipeline (2) is communicated with the inner cavity of a saturation chamber (11) through a bypass conveying pipe (14), each bypass conveying pipe (14) is provided with an electric valve e (15), and the position close to the liquid outlet end of the saturated liquid conveying pipeline (2) is provided with an electric valve f (16);
The saturated liquid conveying pipelines (2) on two sides of the electric valve f (16) are communicated through a pressurizing pipe (17), a manual pressurizing pump (18) is arranged on the pressurizing pipe (17), and the pressurizing pipes (17) on two sides of the manual pressurizing pump (18) are respectively provided with an electric valve g (19) and an electric valve h (20);
a pressure gauge I (21) is arranged on a pressure pipe (17) between the manual pressure pump (18) and the electric valve h (20); a pressure gauge II (22) is arranged on the bypass conveying pipe (14) between each saturation chamber (11) and the electric valve e (15); a pressure gauge III (23) is arranged on the vacuum-pumping pipeline (1);
The electric valve b (9), the electric valve c (12), the electric valve d (13), the electric valve e (15), the electric valve f (16), the electric valve g (19) and the electric valve h (20) are all electrically connected with a control cabinet (5) with a PLC control sheet through lead wires.
2. the multifunctional core saturated fluid device as claimed in claim 1, wherein: a buffer tank (24) is arranged on the vacuumizing pipeline (1) between the pressure gauge III (23) and the vacuumizing pump set, an emptying pipe is arranged at the bottom of the buffer tank (24), an electric valve j (25) is arranged on the emptying pipe, and the electric valve j (25) is electrically connected with a control cabinet (5) with a PLC control sheet through a lead.
3. The multifunctional core saturated fluid device as claimed in claim 1, wherein: the number of the saturation chambers (11) is three.
4. The multifunctional core saturated fluid device as claimed in claim 3, wherein: the volumes of the inner cavities of the three saturation chambers (11) are different.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920389948.9U CN209764675U (en) | 2019-03-26 | 2019-03-26 | Multifunctional rock core saturated fluid device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920389948.9U CN209764675U (en) | 2019-03-26 | 2019-03-26 | Multifunctional rock core saturated fluid device |
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| CN209764675U true CN209764675U (en) | 2019-12-10 |
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| CN201920389948.9U Active CN209764675U (en) | 2019-03-26 | 2019-03-26 | Multifunctional rock core saturated fluid device |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111693433A (en) * | 2020-06-08 | 2020-09-22 | 中国石油天然气股份有限公司 | Core vacuumizing and pressurizing saturated water device and method |
| CN111751180A (en) * | 2020-06-24 | 2020-10-09 | 中国石油天然气股份有限公司 | Ultra-low permeability rock core vacuumizing and pressurizing saturation device |
| CN114577694A (en) * | 2020-12-02 | 2022-06-03 | 中国石油化工股份有限公司 | Rock quantitative saturation device and experimental method |
| CN114814159A (en) * | 2021-01-28 | 2022-07-29 | 中国石油天然气股份有限公司 | Detection device and method for core damage rate |
-
2019
- 2019-03-26 CN CN201920389948.9U patent/CN209764675U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111693433A (en) * | 2020-06-08 | 2020-09-22 | 中国石油天然气股份有限公司 | Core vacuumizing and pressurizing saturated water device and method |
| CN111751180A (en) * | 2020-06-24 | 2020-10-09 | 中国石油天然气股份有限公司 | Ultra-low permeability rock core vacuumizing and pressurizing saturation device |
| CN111751180B (en) * | 2020-06-24 | 2023-09-26 | 中国石油天然气股份有限公司 | Ultra-low permeability core vacuumizing pressurizing saturation device |
| CN114577694A (en) * | 2020-12-02 | 2022-06-03 | 中国石油化工股份有限公司 | Rock quantitative saturation device and experimental method |
| CN114814159A (en) * | 2021-01-28 | 2022-07-29 | 中国石油天然气股份有限公司 | Detection device and method for core damage rate |
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