Sandstone reservoir permeability testing device

Abstract

The utility model relates to the field of reservoir testing, in particular to a sandstone reservoir permeability testing device. The utility model provides a sandstone reservoir permeability testing device which can adjust the position of a three-way valve core to perform single-phase or multi-phase flow permeability testing and pressure applying testing at the same time, facilitates comparison and comprehensive evaluation of sandstone reservoir permeability, improves testing accuracy and efficiency, and is high in adaptability and convenient to use. A sandstone reservoir permeability testing device comprises a mounting frame, a display screen and the like, and the front side of the left lower portion of the mounting frame is connected with the display screen. According to the utility model, gas and water flow directions are controlled by adjusting the position of the three-way valve core, so that water and gas enter the experiment tank, the valve core is pressurized by moving the clamping frame, and then water and gas seepage test is carried out, so that the position of the three-way valve core can be adjusted to carry out single-phase or multi-phase flow permeability test and pressure test at the same time; the permeability of the sandstone reservoir is conveniently compared and comprehensively evaluated, the test accuracy and efficiency are improved, the adaptability is high, and the use is convenient.

Description

TECHNICAL FIELD

[0001] The utility model relates to the reservoir test field especially, and relates to a sandstone reservoir permeability testing device. BACKGROUND

[0002] In the field of oil and gas exploration and development, accurately evaluating the permeability of sandstone reservoir is the key to predicting the productivity of oil and gas reservoir and formulating a reasonable exploitation plan, and as an important index for measuring the flow capacity of reservoir fluid, the accuracy and efficiency of the testing technology of permeability are directly related to the reliability of oil and gas resource evaluation and the economic benefits of exploitation.

[0003] The existing sandstone reservoir permeability test is usually to put the core into a cylindrical cavity and then add water into the cylindrical cavity for permeability test, however, most of the current testing equipment can only perform single-phase flow test, that is, only the flow condition of single fluid (such as water or gas) through the reservoir is considered, and it is difficult to realize multi-phase flow permeability test and comparison, making it difficult to comprehensively evaluate the permeability of sandstone reservoir, which may lead to inaccurate test and affect the test efficiency, and the use is inconvenient.

[0004] Therefore, it is necessary to design a sandstone reservoir permeability testing device capable of adjusting the position of the three-way valve core for single-phase or multi-phase flow permeability test while applying pressure test, which is convenient for comparison and comprehensive evaluation of the permeability of sandstone reservoir, improves the test accuracy and efficiency, has strong adaptability and is convenient to use. UTILITY MODEL CONTENTS

[0005] In order to overcome the shortcomings of the current testing equipment that can only perform single-phase flow test, cannot realize multi-phase flow permeability test and comparison, and is difficult to comprehensively evaluate the permeability of sandstone reservoir, which may lead to inaccurate test and affect the test efficiency, and the use is inconvenient, the utility model provides a sandstone reservoir permeability testing device capable of adjusting the position of the three-way valve core for single-phase or multi-phase flow permeability test while applying pressure test, which is convenient for comparison and comprehensive evaluation of the permeability of sandstone reservoir, improves the test accuracy and efficiency, has strong adaptability and is convenient to use.

[0006] Technical scheme: a sandstone reservoir permeability testing device, comprising a mounting frame, a display screen, a water tank, a water pump, a pipeline, a gas tank, a gas pump, a testing assembly and a pressurizing assembly, the left lower front side of the mounting frame is connected with the display screen, the left part of the mounting frame is connected with the water tank, the upper side of the water tank is connected with the water pump, the right side of the water pump is connected with the pipeline, the pipeline is connected with the mounting frame, the left rear upper side of the mounting frame is connected with the gas tank, the upper side of the mounting frame is connected with the gas pump, the gas pump is connected with the gas tank, the mounting frame is provided with the testing assembly for permeability test of the sandstone reservoir, and the right part of the mounting frame is provided with the pressurizing assembly for pressure test of the sandstone reservoir for comparison.

[0007] In a preferred embodiment of the present application, a water inlet pipe is arranged on the left upper portion of the water tank.

[0008] In a preferred embodiment of the present application, the test assembly comprises a first motor, a three-way valve core, a sealing cover, experimental tanks, collection tanks, electronic scales and filter screens, the right upper portion of the mounting frame is connected with the first motor, the output shaft of the first motor is connected with the three-way valve core, the right side of the air pump is provided with a connecting pipe, the connecting pipe and the pipeline are in contact with the three-way valve core, the right upper portion of the mounting frame is provided with a feeding pipe, the feeding pipe is also in contact with the three-way valve core, the mounting frame is connected with two experimental tanks, the upper portion of each experimental tank is connected with a sealing cover through screw threads, the pipeline and the feeding pipe are in contact with the sealing cover, the lower side of each experimental tank is connected with a collection tank, the left and right portions of the mounting frame are connected with electronic scales, the electronic scales are in contact with adjacent collection tanks, and the lower portion of each experimental tank is connected with a filter screen.

[0009] In a preferred embodiment of the present application, the collection tanks are made of transparent material.

[0010] In a preferred embodiment of the present application, the pressurizing assembly comprises a second motor, a bidirectional screw rod, sliding blocks and clamping frames, the right front portion of the mounting frame is connected with the second motor, the output shaft of the second motor is connected with the bidirectional screw rod, the front and rear portions of the bidirectional screw rod are connected with the sliding blocks through screw threads, the left portions of the sliding blocks are connected with the clamping frames on the side close to each other, and the clamping frames are slidably connected with the experimental tanks on the right portion.

[0011] In a preferred embodiment of the present application, the side close to each other of the clamping frames is arc-shaped.

[0012] Compared with the prior art, the present application has the following advantages: the present application controls the flow direction of gas and water by adjusting the position of the three-way valve core, so that water and gas enter the experimental tank, the valve core is pressurized by moving the clamping frame, and then water and gas seep out for testing, thereby being capable of adjusting the position of the three-way valve core to perform single-phase or multi-phase flow permeability testing while applying pressure testing, facilitating comprehensive evaluation of sandstone reservoir permeability, improving testing accuracy and efficiency, and being suitable for use and convenient to use. BRIEF DESCRIPTION OF DRAWINGS

[0013] Figure 1 It is a schematic diagram of the three-dimensional structure of the present application.

[0014] Figure 2 It is a schematic diagram of the three-dimensional structure of the gas storage tank, the air pump and other components of the present application.

[0015] Figure 3 It is a schematic diagram of the three-dimensional structure of the experimental tank, the collection tank and other components of the present application.

[0016] Figure 4 It is a schematic diagram of the three-dimensional structure of the first motor, the three-way valve core and other components of the present application.

[0017] Figure 5 It is the stereogram structure schematic view of second motor and bidirectional screw rod and other components of the utility model.

[0018] Among them, the above-mentioned drawing includes the following sign: 1, mounting frame, 2, display screen, 3, water tank, 4, water pump, 5, pipeline, 6, gas storage tank, 7, air pump, 8, first motor, 9, three-way valve core, 10, sealing cover, 11, experimental jar, 12, collection jar, 13, electronic scale, 14, second motor, 15, bidirectional screw rod, 16, sliding block, 17, clamping frame, 18, filter screen. DETAILED DESCRIPTION

[0019] Although the utility model can be described in relation to a particular application or industry, those skilled in the art will recognize a broader applicability of the utility model. Those of ordinary skill in the art will recognize that terms such as: above, below, upward, downward, etc. are used to describe the drawings and are not meant to limit the scope of the utility model as defined by the appended claims. Any numerical designations such as: first or second are merely illustrative and are not intended to limit the scope of the utility model in any way.

[0020] A kind of sandstone reservoir permeability testing device, such as Figures 1-5As shown, including the mounting frame 1, display screen 2, water tank 3, water pump 4, pipeline 5, gas tank 6, air pump 7, test assembly and pressurization assembly, the mounting frame 1 left lower front side is connected with the display screen 2, the mounting frame 1 left part is connected with the water tank 3, the water tank 3 upper left side is equipped with water inlet pipe, facilitating water adding, the water tank 3 upper side is connected with the water pump 4, the water pump 4 right side is connected with the pipeline 5, the pipeline 5 is connected with the mounting frame 1, the mounting frame 1 left rear upper side is connected with the gas tank 6, the mounting frame 1 upper side is connected with the air pump 7, the air pump 7 is connected with the gas tank 6, the mounting frame 1 upper side is equipped with test assembly for permeability test of sandstone reservoir, test assembly including first motor 8, three-way valve core 9, sealing cover 10, experimental tank 11, collection tank 12, electronic scale 13 and filter screen 18, the mounting frame 1 right upper side is connected with the first motor 8, the output shaft of the first motor 8 is connected with the three-way valve core 9, the air pump 7 right side is equipped with connecting pipe, the connecting pipe and the pipeline 5 are in contact with the three-way valve core 9, the mounting frame 1 right upper part is equipped with feed pipe, the feed pipe is also in contact with the three-way valve core 9, the mounting frame 1 middle part is connected with left and right two experimental tanks 11, the experimental tank 11 upper part is connected with the sealing cover 10 through thread, the pipeline 5 and feed pipe are in contact with the sealing cover 10, the experimental tank 11 lower side is connected with the collection tank 12, the collection tank 12 is transparent material, facilitating observation of internal condition, the mounting frame 1 left and right two parts are connected with the electronic scale 13, the electronic scale 13 is in contact with the adjacent collection tank 12, the experimental tank 11 lower part is connected with the filter screen 18, the mounting frame 1 right part is equipped with pressurization assembly for comparison of pressure test of sandstone reservoir, pressurization assembly including second motor 14, bidirectional screw rod 15, sliding block 16 and clamping frame 17, the mounting frame 1 right front part is connected with the second motor 14, the output shaft of the second motor 14 is connected with the bidirectional screw rod 15, the bidirectional screw rod 15 front and rear two parts are connected with the sliding block 16 through thread, the sliding block 16 left part is connected with the clamping frame 17 on the side close to each other, the clamping frame 17 is slidably connected with the experimental tank 11 on the right part, the clamping frame 17 on the side close to each other is arc-shaped.

[0021] When the permeability test of sandstone reservoir is needed, the device can be used, so that the mounting frame 1 is in contact with the ground, then the core is put into the experimental tank 11, then the sealing cover 10 is installed by rotating, so that the sealing cover 10 is in contact with the pipeline 5 and the connecting pipe, at this time the three-way valve core 9 is in communication with the pipeline 5, the connecting pipe and the feeding pipe, the water inlet pipe is connected with the water source, so that the water enters the water tank 3, then the water pump 4 is started, so that the water enters the pipeline 5, then flows through the three-way valve core 9, flows into the feeding pipe, so that the water respectively flows into the experimental tank 11 and contacts with the core for test, at the same time the gas pump 7 is started, so that the gas in the gas storage tank 6 enters the connecting pipe, then flows through the three-way valve core 9, respectively flows into the gas storage tank 6 for test, then the second motor 14 is started, the bidirectional screw rod 15 is driven to rotate by the second motor 14, under the action of the screw thread, the sliding block 16 moves at the same time, and then drives the clamping frame 17 to move to clamp and pressurize the right core, the side of the clamping frame 17 close to each other is arc-shaped, so that the permeability test of the core is carried out under pressure, the permeated water and gas flow through the filter screen 18 and flow into the collection tank 12 for collection, the collection tank 12 is made of transparent material, which is convenient for observing the internal condition, filtering through the filter screen 18, then the electronic scale 13 is used to weigh the collection tank 12 on both sides, the weighing data is displayed on the display screen 2, then the permeability of the reservoir is evaluated by comparing the monitored data, so that the two-phase permeability test under pressure and without pressure is realized, after the test is completed, the water pump 4 and the gas pump 7 are closed, then the second motor 14 is reversely operated, so that the bidirectional screw rod 15 reversely rotates, under the action of the screw thread, the sliding block 16 reversely moves at the same time, and then drives the clamping frame 17 to reversely move and reset, the first motor 8 can also be started, the three-way valve core 9 is driven to rotate by the first motor 8, so that the three-way valve core 9 is in communication with the connecting pipe and the feeding pipe, then the first motor 8 is closed, the water pump 4 and the gas pump 7 are started, so that the water enters the experimental tank 11 on the left from the pipeline 5, so that the gas flows through the three-way valve core 9 from the connecting pipe, then enters the experimental tank 11 from the feeding pipe, to carry out the water phase permeability test and the gas permeability test, so that the water and the gas respectively enter the corresponding collection tank 12 for weighing, after the test is completed, the water pump 4 and the gas pump 7 are closed, the three-way valve core 9 can also be driven to rotate by the first motor 8, so that the three-way valve core 9 is in communication with the pipeline 5 and the feeding pipe, then the first motor 8 is closed, the water pump 4 is started, so that the water flows into the experimental tank 11 on both sides, then the second motor 14 is started, so that the bidirectional screw rod 15 rotates, under the action of the screw thread, the sliding block 16 moves, and then drives the clamping frame 17 to move to clamp and pressurize the core.The penetrated water is weighed into the corresponding collecting tank 12, and then the water permeability test under pressure and without pressure is realized, after the test, the water pump 4 is closed, and then the above operation is repeated to reset the clamping frame 17, so that the position of the three-way valve core 9 can be adjusted to realize the single-phase or multi-phase permeability test under pressure, which is convenient for comparing and comprehensively evaluating the permeability of the sandstone reservoir, improves the test accuracy and efficiency, has strong adaptability, and is convenient to use.

[0022] The above examples are provided for those skilled in the art to implement or use the utility model, those skilled in the art can make various modifications or changes to the above examples without departing from the utility model idea of the utility model, therefore the protection scope of the utility model is not limited by the above examples, and should be the maximum range meeting the innovative features mentioned in the claims.

Claims

1. A device for testing permeability of a sandstone reservoir, characterized in that, The utility model relates to a sandstone reservoir permeability test device, including mounting frame (1), display screen (2), water tank (3), water pump (4), pipeline (5), gas tank (6), air pump (7), test assembly and pressurization assembly, display screen (2) is connected in the left lower part front side of mounting frame (1), water tank (3) is connected to the left part of mounting frame (1), water pump (4) is connected to the upper side of water tank (3), pipeline (5) is connected with mounting frame (1), gas tank (6) is connected to the upper side of the left rear part of mounting frame (1), air pump (7) is connected to the upper side of mounting frame (1), air pump (7) is connected with gas tank (6), the test assembly for carrying out permeability test to sandstone reservoir is equipped on the mounting frame (1), the pressurization assembly for carrying out comparison to sandstone reservoir pressure test is equipped on the right part of mounting frame (1).

2. A sandstone reservoir permeability testing device as claimed in claim 1, characterized in that, The upper left side of water tank (3) is equipped with a water inlet pipe.

3. A sandstone reservoir permeability test apparatus as claimed in claim 2, characterised in that, The test assembly includes first motor (8), three-way valve core (9), sealing cover (10), experimental jar (11), collection jar (12), electronic scale (13) and filter screen (18), the upper right side of mounting frame (1) is connected with first motor (8), the output shaft of first motor (8) is connected with three-way valve core (9), the right side of air pump (7) is equipped with a connecting pipe, the connecting pipe and pipeline (5) are all in contact with three-way valve core (9), the upper right part of mounting frame (1) is equipped with a feeding pipe, the feeding pipe is also in contact with three-way valve core (9), the middle part of mounting frame (1) is connected with two experimental jars (11) left and right, the upper part of experimental jar (11) is all connected with sealing cover (10) by screw thread, pipeline (5) and feeding pipe are all in contact with sealing cover (10), the lower side of experimental jar (11) is all connected with collection jar (12), the left and right parts of mounting frame (1) are all connected with electronic scale (13), electronic scale (13) is all in contact with adjacent collection jar (12), the lower part of experimental jar (11) is all connected with filter screen (18).

4. A device for testing the permeability of a sandstone reservoir according to claim 3, characterised in that, The collection jar (12) is all of transparent material.

5. A device for testing the permeability of a sandstone reservoir according to claim 4, characterised in that, The pressurization assembly includes second motor (14), bidirectional screw rod (15), sliding block (16) and clamping frame (17), the right front part of mounting frame (1) is connected with second motor (14), the output shaft of second motor (14) is connected with bidirectional screw rod (15), the front and rear parts of bidirectional screw rod (15) are all connected with sliding block (16) by screw thread, the left part of sliding block (16) is all connected with clamping frame (17) on the side close to each other, clamping frame (17) is all slidably connected with experimental jar (11) on the right part.

6. A sandstone reservoir permeability test apparatus as claimed in claim 5, wherein, The side close to each other of clamping frame (17) is all arc-shaped.

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