Reservoir sediment salt release rate in-situ measuring device

Abstract

The invention discloses a reservoir sediment salt release rate in-situ determination device, and relates to the field of environmental water detection, the reservoir sediment salt release rate in-situ determination device comprises a sleeve, a determination cylinder and a negative pressure pipe, the determination cylinder is sleeved in the sleeve, the negative pressure pipe is sleeved in the sleeve, the surface of the sleeve is provided with a first permeation hole, and the surface of the negative pressure pipe is provided with a second permeation hole. Three sets of conductivity probes are arranged in the measuring cylinder in the vertical direction to measure the salt release rate of the bottom mud of the reservoir, a sealing ring is arranged between every two sets of conductivity probes, and four sets of sealing sleeves are evenly arranged on the outer side of the measuring cylinder in a sleeving mode to divide the measuring cylinder into three sets of testing units in the vertical direction. Liquid in the bottom mud enters the sleeve through the first permeation holes, three groups of second suction holes are formed in the negative pressure pipe in the vertical direction, the negative pressure pipe provides negative pressure for the interior of the sleeve through the second suction holes to accelerate the liquid in the bottom mud to enter the three groups of test units, and an openable and closable conical part is mounted at the bottom of the sleeve. The resistance during embedding of the sleeve is reduced, and the stability of the embedded sleeve is improved.

Description

Technical Field

[0001] The invention relates to the field of environmental water body detection, and in particular to an in-situ determination device for reservoir bottom mud salt release rate. Background Art

[0002] The in-situ determination of reservoir sediment salt release rate is a complex but crucial task. It helps to understand the impact of sediment on the salinity of overlying water bodies, thereby providing a scientific basis for reservoir water quality management. However, traditional in-situ determination devices for reservoir sediment salt release rate are often difficult to measure due to the unevenness of reservoir sediment in the sampling area and the unrepresentativeness of the reservoir sediment after sampling. The liquid contained in the reservoir sediment can also be used to measure the salt release rate of the reservoir sediment. Summary of the invention

[0003] The purpose of the present invention is to overcome the shortcomings of the prior art and provide an in-situ measuring device for the salt release rate of reservoir sediment. Liquid contained in the reservoir sediment is sucked into the salinity release rate measuring device for measurement, thereby improving the accuracy of the measurement of the salinity release rate of the reservoir sediment.

[0004] In order to solve the above technical problems, the present invention adopts the following technical solution: an in-situ measuring device for the release rate of salt in reservoir sediment, comprising:

[0005] A sleeve, wherein a first penetration hole is provided on the surface of the sleeve, and liquid in the reservoir bottom mud penetrates into the interior of the sleeve through the first penetration hole;

[0006] A measuring cylinder, wherein the measuring cylinder is sleeved inside the sleeve, and the surface of the measuring cylinder is evenly provided with a first sealing sleeve, a second sealing sleeve, a third sealing sleeve and a fourth sealing sleeve in the vertical direction, respectively. The surface of the measuring cylinder is provided with three groups of first suction holes, and the first suction holes are provided at the center positions of the first and second sealing sleeves, the center positions of the second and third sealing sleeves, and the center positions of the third and fourth sealing sleeves on the surface of the measuring cylinder. A one-way solenoid valve is installed inside the first suction hole, and the liquid in the sleeve flows into the measuring cylinder in a one-way manner, so as to prevent the liquid to be detected stored in the measuring cylinder from flowing out from the first suction holes, thereby affecting the test of the salt release rate of the reservoir sediment;

[0007] The salt release rate test component comprises a negative pressure tube and a first conductivity probe, the negative pressure tube is sleeved at the center of the measuring tube, the liquid in the reservoir sediment enters the measuring tube through the first suction hole, three groups of first conductivity probes are respectively arranged on the surface of the negative pressure tube in the vertical direction to measure the salt release rate of the reservoir sediment, four groups of sealing rings are evenly arranged on the surface of the negative pressure tube in the vertical direction from top to bottom, the three groups of the first conductivity probes are evenly arranged between the four groups of the sealing rings, and each group of the conductivity probes is arranged on the surface of the negative pressure tube. A second suction hole is arranged on the lower side of the head, and a negative pressure driving machine is arranged on the top end of the negative pressure tube. The negative pressure driving machine provides negative pressure to the negative pressure tube, and the negative pressure tube provides negative pressure to the inside of the sleeve through the second suction hole. After negative pressure is generated inside the measuring cylinder and the casing, the liquid in the reservoir bottom mud enters the casing and the measuring cylinder. A drain pipe is arranged at the output end of the negative pressure driving machine, and the liquid inside the casing and the measuring cylinder is discharged through the drain pipe, thereby ensuring the uniformity and representativeness of the liquid in the measuring cylinder and ensuring the accuracy of the first conductivity probe in measuring the salt release rate.

[0008] Preferably, a one-way valve assembly is arranged on the surface of the second suction hole, and the one-way valve assembly includes a rotating rod, a switch member and a limit block. The rotating rod is installed on the top of the second suction hole, and the switch member rotates along the rotating rod. The limit block is arranged at the bottom of the second suction hole to limit the switch member. The liquid permeated from the reservoir sediment enters the negative pressure pipe unidirectionally, thereby preventing the reservoir sediment liquid from different strata from flowing to each other, thereby reducing the accuracy of the reservoir sediment salt release rate.

[0009] Preferably, a guide plate is provided on one side of the negative pressure tube near the second suction hole, and the guide plate is arranged obliquely upward. Water on the lower side of the guide plate flows through the guide plate and flows directly upward, and liquid flowing out of the second suction hole flows upward through the guide plate, preventing the liquid on the lower side of the negative pressure tube from entering the second suction hole on the upper side, thereby preventing the mutual flow of liquids in different formations from affecting the salt release rate detection results.

[0010] Preferably, a second permeation hole is arranged at the oblique lower side of each of the first permeation holes, and the staggered distribution of the second permeation holes and the first permeation holes absorbs the liquid in the reservoir bottom mud in the adjacent horizontal layer into the sleeve. Filter nets are provided on the surfaces of the first permeation holes and the second permeation holes to prevent residues in the reservoir bottom mud from entering the sleeve and affecting the measurement of the salt release rate.

[0011] Preferably, the first sealing sleeve, the second sealing sleeve, the third sealing sleeve and the fourth sealing sleeve are all tightly attached to the inside of the sleeve, and are all connected to the inner wall of the sleeve through the sealant, and the sealing ring is connected to the inner wall of the measuring tube through the sealant, thereby ensuring the airtightness of the first sealing sleeve, the second sealing sleeve, the third sealing sleeve and the fourth sealing sleeve and the upper and lower sides of the sealing ring, ensuring that the collected liquids correspond to their respective reservoir mud layers, and ensuring the accuracy of the salt release rate measurement.

[0012] Preferably, each group of the first conductivity probes are respectively installed at the center position between the first sealing ring and the second sealing ring, the second sealing ring and the third sealing ring, and the third sealing ring and the fourth sealing ring, and the second conductivity probe and the third conductivity probe are arranged at equal intervals on the upper and lower sides of each group of the first conductivity probes. The final result of the salt release rate between the sealing rings is the average value of the results obtained by the first conductivity probe, the second conductivity probe and the third conductivity probe, thereby ensuring the accuracy of the salt release rate measurement.

[0013] Preferably, a hook is provided at the bottom of each group of the casings, and a buckle is provided at the top of the casings. When assembling multiple groups of casings, the buckle at the top of the casings is clamped on the hook, thereby realizing the measurement of salt release rate of reservoir sediment at different depths.

[0014] Preferably, an openable and closable conical member is provided at the bottom end of the sleeve, and the openable and closable conical member is conical and is used to reduce the resistance of the reservoir bottom mud when the sleeve is lowered.

[0015] Preferably, the openable and closable conical part is composed of two groups of mutually symmetrical stabilizing parts, an oil-filled underwater motor is installed inside the bottom of the sleeve, and two groups of symmetrical sleeves and telescopic rods are respectively arranged at the output ends of the oil-filled underwater motor. The oil-filled underwater motor drives the telescopic rods to extend and retract in the sleeves, and a slot is provided inside the stabilizing part, and one end of the two groups of telescopic rods are respectively connected to the slots. After the sleeve is buried in the bottom of the reservoir, the telescopic rods drive the stabilizing part to extend to both sides, thereby expanding the range of the openable and closable conical part in the horizontal direction for stabilizing the sleeve.

[0016] Beneficial effects: The present invention provides an in-situ measuring device for the salt release rate of reservoir sediment. The negative pressure tube is provided with vertically distributed conductivity probes for measuring the salt release rate. The negative pressure driving machine can suck the reservoir sediment from the first permeation hole and the second permeation hole into the interior of the sleeve, and then suck the liquid into the first measuring cylinder through the first suction hole, so that the liquid in the measuring cylinder keeps flowing, thereby maintaining the uniformity of the liquid in the measuring cylinder and improving the accuracy of the measured salt release rate of the reservoir sediment. The openable and closable conical part is conical and is used to reduce the resistance of the reservoir sediment when the sleeve is lowered. After the sleeve is buried in the bottom of the reservoir, the telescopic rod drives the stabilizing part to extend to both sides, thereby expanding the horizontal range of the openable and closable conical part for stabilizing the sleeve. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The accompanying drawings are used to provide further understanding of the present invention and constitute a part of the specification. They are used to explain the present invention together with the embodiments of the present invention and do not constitute a limitation of the present invention.

[0018] In the attached picture:

[0019] Figure 1 It is an overall schematic diagram of the in-situ measuring device for the release rate of salt in reservoir sediment of the present invention;

[0020] Figure 2 It is a schematic diagram of the measuring tube of the present invention;

[0021] Figure 3 It is a schematic diagram of the negative pressure tube and the conductivity probe of the present invention;

[0022] Figure 4 is a schematic diagram of a one-way valve assembly of the present invention;

[0023] Figure 5 Schematic diagram of the guide plate of the present invention;

[0024] Figure 6 It is a schematic diagram of the openable and closable cone member of the present invention.

[0025] Numbers in the figure: 1. sleeve; 2. buckle; 3. negative pressure drive motor; 4. drain pipe; 5. first penetration hole; 6. second penetration hole; 7. openable and closable cone; 8. negative pressure pipe; 9. measuring cylinder; 10. one-way solenoid valve; 11. sealing ring; 12. first suction hole; 13. first conductivity probe; 14. switch; 15. limit block; 16. rotating rod; 17. second suction hole; 18. sleeve; 19. telescopic rod; 20. stabilizing member; 21. slot; 22. second conductivity probe; 23. third conductivity probe; 24. oil-filled underwater motor; 25. guide plate; 26. first closed sleeve; 27. second closed sleeve; 28. third closed sleeve; 29. ​​fourth closed sleeve. DETAILED DESCRIPTION

[0026] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments. The following text is only used to describe the implementation method of an in-situ determination device for the salt release rate of reservoir sediment of the present invention, and does not strictly limit the protection scope of the specific request of the present invention.

[0027] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the present invention, the descriptions of "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or suggesting their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of such features.

[0028] Example: Figure 1-Figure 6 As shown, a device for in-situ determination of salt release rate of reservoir sediment comprises:

[0029] Sleeve 1, such as Figure 1 As shown, the surface of the sleeve 1 is provided with a first penetration hole 5, and the liquid in the reservoir bottom mud penetrates into the interior of the sleeve 1 through the first penetration hole 5;

[0030] Measuring tube 9, such as Figure 1 and Figure 2 As shown, the measuring cylinder 9 is sleeved inside the sleeve 1, and the surface of the measuring cylinder 9 is evenly provided with a first sealed sleeve 26, a second sealed sleeve 27, a third sealed sleeve 28 and a fourth sealed sleeve 29 in the vertical direction, and three groups of first suction holes 12 are provided on the surface of the measuring cylinder 9. The first suction holes 12 are provided at the center positions of the first sealed sleeve 26 and the second sealed sleeve 27, the center positions of the second sealed sleeve 27 and the third sealed sleeve 28, and the center positions of the third sealed sleeve 28 and the fourth sealed sleeve 29 on the surface of the measuring cylinder 9. A one-way solenoid valve 10 is installed inside the first suction hole 12, and the liquid in the sleeve 1 flows into the measuring cylinder 9 in a one-way manner, so as to prevent the liquid to be detected stored in the measuring cylinder 9 from flowing out of the first suction hole 12, which affects the test of the salt release rate of the reservoir sediment;

[0031] Salt release rate test components, such as Figure 3As shown, the salt release rate test assembly includes a negative pressure tube 8 and a first conductivity probe 13. The negative pressure tube 8 is sleeved at the center of the measuring tube 9. The liquid in the reservoir sediment enters the measuring tube 9 through the first suction hole 12. Three groups of first conductivity probes 13 are respectively arranged on the surface of the negative pressure tube 8 in the vertical direction to measure the salt release rate of the reservoir sediment. Four groups of sealing rings 11 are evenly arranged on the surface of the negative pressure tube 8 from top to bottom in the vertical direction. The three groups of the first conductivity probes 13 are evenly arranged between the four groups of the sealing rings 11. On the surface of the negative pressure tube 8, each group of the conductivity probes is arranged on the lower side. A second suction hole 17, a negative pressure driving machine 3 is arranged at the top end of the negative pressure tube 8, the negative pressure driving machine 3 provides negative pressure to the negative pressure tube 8, the negative pressure tube 8 provides negative pressure to the sleeve 1 through the second suction hole 17, after negative pressure is generated inside the measuring cylinder 9 and the casing 18, the liquid in the reservoir bottom mud enters the casing 18 and the measuring cylinder 9, a drain pipe 4 is arranged at the output end of the negative pressure driving machine 3, the liquid inside the casing 18 and the measuring cylinder 9 is discharged through the drain pipe 4, thereby ensuring the uniformity and representativeness of the liquid in the measuring cylinder 9, and ensuring the accuracy of the first conductivity probe 13 in measuring the salt release rate.

[0032] In an embodiment, Figure 4 As shown, a one-way valve assembly is arranged on the surface of the second suction hole 17, and the one-way valve assembly includes a rotating rod 16, a switch member 14 and a limit block 15. The rotating rod 16 is installed on the top of the second suction hole 17, and the switch member 14 rotates along the rotating rod 16. The limit block 15 is arranged at the bottom of the second suction hole 17 to limit the switch member 14. The liquid permeated from the reservoir sediment enters the negative pressure pipe 8 unidirectionally, avoiding the mutual flow of reservoir sediment liquids in different strata, thereby reducing the accuracy of the reservoir sediment salt release rate.

[0033] In an embodiment, Figure 5 As shown, a guide plate 25 is provided on one side of the negative pressure pipe 8 near the second suction hole 17. The guide plate 25 is arranged obliquely upward. The water on the lower side of the guide plate 25 flows through the guide plate 25 and flows directly upward. The liquid flowing out of the second suction hole 17 flows upward through the guide plate 25, preventing the liquid on the lower side of the negative pressure pipe 8 from entering the second suction hole 17 on the upper side, thereby preventing the mutual flow of liquids in different formations from affecting the salt release rate detection result.

[0034] In an embodiment, Figure 1As shown, a second permeable hole 6 is arranged at the oblique lower side of each of the first permeable holes 5. The staggered distribution of the second permeable holes 6 and the first permeable holes 5 absorbs the liquid in the reservoir sediment in the adjacent horizontal layer into the sleeve 1, thereby increasing the representativeness of the liquid to be detected in the surrounding area. Filter nets are arranged on the surfaces of the first permeable holes 5 and the second permeable holes 6, thereby preventing the residue in the reservoir sediment from entering the sleeve 1 and affecting the measurement of the salt release rate.

[0035] In an embodiment, Figure 2 and Figure 3 As shown, the first sealed sleeve 26, the second sealed sleeve 27, the third sealed sleeve 28 and the fourth sealed sleeve 29 are all tightly attached to the inside of the sleeve 1, and are connected to the inner wall of the sleeve 1 through the sealant, and the sealing ring 11 is connected to the inner wall of the measuring tube 9 through the sealant, thereby ensuring the airtightness of the first sealed sleeve 26, the second sealed sleeve 27, the third sealed sleeve 28 and the fourth sealed sleeve 29 and the upper and lower sides of the sealed ring, ensuring that the collected liquids correspond to their respective reservoir bottom mud layers, and ensuring the accuracy of the salt release rate measurement.

[0036] In an embodiment, Figure 3 As shown, each group of the first conductivity probes 13 are respectively installed at the center position between the first sealing ring 11 and the second sealing ring 11, the second sealing ring 11 and the third sealing ring 11, and the third sealing ring 11 and the fourth sealing ring 11, and the second conductivity probes 22 and the third conductivity probes 23 are arranged at equal intervals on the upper and lower sides of each group of the first conductivity probes 13, respectively. The final result of the salt release rate between the sealing rings 11 is the average value of the results obtained by the first conductivity probe 13, the second conductivity probe 22 and the third conductivity probe 23, thereby ensuring the accuracy of the salt release rate measurement.

[0037] In an embodiment, Figure 1 and Figure 6 As shown, a hook is provided at the bottom of each group of the casing 18, and a buckle 2 is provided at the top of the casing 18. When assembling multiple groups of casings 18, the buckle 2 at the top of the casing 18 is clamped on the hook, thereby realizing the measurement of salt release rate of reservoir sediment at different depths.

[0038] In an embodiment, Figure 1 and Figure 6 As shown, an openable and closable cone 7 is provided at the bottom end of the sleeve 1. The openable and closable cone 7 is conical and is used to reduce the resistance of the reservoir bottom mud when the sleeve 1 is lowered.

[0039] In an embodiment, Figure 6As shown, the openable and closable conical member 7 is composed of two groups of mutually symmetrical stabilizing members 20, an oil-filled underwater motor 24 is installed inside the bottom of the sleeve 1, and two groups of symmetrical sleeves 18 and telescopic rods 19 are respectively arranged at the output ends of the oil-filled underwater motor 24. The oil-filled underwater motor 24 drives the telescopic rods 19 to extend and retract in the sleeves 18, and a slot 21 is provided inside the stabilizing member 20, and one end of the two groups of telescopic rods 19 is respectively connected to the slot 21. After the sleeve 1 is buried in the bottom of the reservoir, the telescopic rods 19 drive the stabilizing member 20 to extend to both sides, thereby expanding the range of the openable and closable conical member 7 in the horizontal direction for stabilizing the sleeve 1.

[0040] When the device is in use, the openable and closable cone 7 is used to bury the casing 18 in the position to be detected of the reservoir bottom mud, the oil-filled underwater motor 24 controls the stabilizing member 20 to extend in the horizontal direction, and expands the horizontal range of the openable and closable cone 7 to stabilize the sleeve 1, the negative pressure driving machine 3 sucks the reservoir bottom mud from the first permeable hole 5 and the second permeable hole 6 into the inside of the sleeve 1, and then sucks the liquid into the first measuring cylinder 9 through the first suction hole 12, so that the liquid in the measuring cylinder 9 keeps flowing, maintains the uniformity of the reservoir bottom mud in the sleeve 1, and improves the accuracy of the measured salt release rate of the reservoir bottom mud, the first conductivity probe 13, the second conductivity probe 22, and the third conductivity probe 23 measure the salt release rate of the liquid in the reservoir bottom mud, and the final determined result of the salt release rate is the average value of the results obtained by the first conductivity probe 13, the second conductivity probe 22 and the third conductivity probe 23.

[0041] Finally, it should be noted that the above is only a preferred example of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. An in-situ measuring device for the salt release rate of reservoir sediment, characterized in that: include: A sleeve, wherein a first penetration hole is provided on the surface of the sleeve, and liquid in the reservoir bottom mud penetrates into the interior of the sleeve through the first penetration hole; A measuring cylinder, wherein the measuring cylinder is sleeved inside the sleeve, and the surface of the measuring cylinder is evenly provided with a first sealing sleeve, a second sealing sleeve, a third sealing sleeve and a fourth sealing sleeve in the vertical direction, respectively. The surface of the measuring cylinder is provided with three groups of first suction holes, and the first suction holes are provided at the center positions of the first sealing sleeve and the second sealing sleeve, the center positions of the second sealing sleeve and the third sealing sleeve, and the center positions of the third sealing sleeve and the fourth sealing sleeve on the surface of the measuring cylinder. A one-way solenoid valve is installed inside the first suction hole, and the liquid in the sleeve flows into the measuring cylinder in a one-way manner; A salt release rate test assembly, the salt release rate test assembly comprises a negative pressure tube and a first conductivity probe, the negative pressure tube is sleeved at the center of the measuring cylinder, the liquid of the reservoir bottom mud enters the measuring cylinder through the first suction hole, three groups of first conductivity probes are respectively arranged on the surface of the negative pressure tube in the vertical direction to measure the salt release rate of the reservoir bottom mud, four groups of sealing rings are evenly arranged on the surface of the negative pressure tube in the vertical direction from top to bottom, three groups of the first conductivity probes are respectively evenly arranged between the four groups of the sealing rings, and a second suction hole is arranged on the lower side of each group of the conductivity probes on the surface of the negative pressure tube, a negative pressure driving machine is arranged at the top end of the negative pressure tube, the negative pressure driving machine provides negative pressure to the negative pressure tube, and the negative pressure tube provides negative pressure to the sleeve through the second suction hole, after negative pressure is generated inside the measuring cylinder and the sleeve, the liquid of the reservoir bottom mud enters the sleeve and the measuring cylinder, a drainage pipe is arranged at the output end of the negative pressure driving machine, and the liquid inside the sleeve and the measuring cylinder is discharged through the drainage pipe.

2. The in-situ measuring device for reservoir sediment salt release rate according to claim 1, characterized in that: A one-way valve assembly is arranged on the surface of the second suction hole, and the one-way valve assembly includes a rotating rod, a switch component and a limit block. The rotating rod is installed on the top of the second suction hole, and the switch component rotates along the rotating rod. The limit block is arranged at the bottom of the second suction hole to limit the switch component. The liquid permeated from the reservoir bottom mud enters the negative pressure tube unidirectionally.

3. The in-situ measuring device for the release rate of salt in reservoir sediment according to claim 1, characterized in that: A guide plate is provided inside the negative pressure pipe near the second suction hole. The guide plate is arranged obliquely upward. Water on the lower side of the guide plate flows through the guide plate and directly flows upward. Liquid flowing out of the second suction hole flows upward through the guide plate.

4. The in-situ measuring device for reservoir sediment salt release rate according to claim 1, characterized in that: A second permeation hole is arranged at the oblique lower side of each of the first permeation holes. The staggered distribution of the second permeation holes and the first permeation holes absorbs the liquid in the reservoir bottom mud in the adjacent horizontal layer into the sleeve. Filter nets are arranged on the surfaces of the first permeation holes and the second permeation holes to prevent residues in the reservoir bottom mud from entering the sleeve.

5. The in-situ measuring device for reservoir sediment salt release rate according to claim 1, characterized in that: The first sealing sleeve, the second sealing sleeve, the third sealing sleeve and the fourth sealing sleeve are all tightly attached to the inside of the sleeve and connected to the inner wall of the sleeve via sealant. The sealing ring is connected to the inner wall of the measuring tube via sealant.

6. The in-situ measuring device for reservoir sediment salt release rate according to claim 1, characterized in that: The first conductivity probes of each group are installed at the center between the first sealing ring and the second sealing ring, the second sealing ring and the third sealing ring, and the third sealing ring and the fourth sealing ring. The second conductivity probe and the third conductivity probe are arranged at equal intervals on the upper and lower sides of each group of first conductivity probes. The final result of the salt release rate between the sealing rings is the average value of the results obtained by the first conductivity probe, the second conductivity probe and the third conductivity probe.

7. The in-situ measuring device for reservoir sediment salt release rate according to claim 1, characterized in that: A hook is provided at the bottom of each group of sleeves, and a buckle is provided at the top of the sleeve. When assembling multiple groups of sleeves, the buckle at the top of the sleeve is clamped on the hook.

8. The in-situ measuring device for reservoir sediment salt release rate according to claim 1, characterized in that: An openable and closable conical part is arranged at the bottom end of the sleeve, and the openable and closable conical part is conical and is used to reduce the resistance of the reservoir bottom mud when the sleeve is lowered.

9. The in-situ measuring device for reservoir sediment salt release rate according to claim 1, characterized in that: The openable and closable conical part is composed of two groups of mutually symmetrical stabilizing parts. An oil-filled underwater motor is installed inside the bottom of the sleeve. Two groups of symmetrical sleeves and telescopic rods are respectively arranged at the output ends of the oil-filled underwater motor. The oil-filled underwater motor drives the telescopic rods to extend and retract in the sleeves. A slot is provided inside the stabilizing part. One end of the two groups of telescopic rods is respectively connected to the slot. After the sleeve is buried in the bottom of the reservoir, the telescopic rod drives the stabilizing part to extend to both sides, thereby expanding the range of the openable and closable conical part in the horizontal direction for stabilizing the sleeve.

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