An API fluid loss automatic measuring device

Abstract

The application belongs to the technical field of oil exploration and development test equipment, and particularly relates to an API filtration loss automatic measuring device, which comprises a support frame, a measuring mechanism fixedly arranged on the support frame and used for measuring the filtration loss of drilling fluid, a clamping and transferring mechanism fixedly arranged on the support frame and used for clamping and transferring a measuring cup into the measuring mechanism, a sealing mechanism fixedly arranged on the support frame, a sealing end of the sealing mechanism forming a sealed environment with the measuring cup and the measuring mechanism, a quantitative liquid feeding mechanism fixedly arranged on the support frame and used for quantitatively feeding drilling fluid into the measuring cup, a cleaning mechanism in communication with the quantitative liquid feeding mechanism and used for cleaning the quantitative liquid feeding mechanism and a liquid feeding pipeline, and a pressurizing mechanism fixedly arranged on the support frame and used for pressurizing the measuring cup containing the drilling fluid. The application can improve the accuracy and efficiency of filtration loss measurement.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of oil exploration and development test equipment, and particularly relates to an API filtration loss automatic measuring device. BACKGROUND

[0002] In the process of oil drilling, it is necessary to know the basic condition of the drilling fluid. The phenomenon that the drilling fluid seeps into the formation from the drilling fluid column. The size of the filtration loss will affect the performance of the drilling fluid, the wellbore stability, the oil and gas layer protection and many other aspects. Therefore, accurate measurement of the drilling fluid filtration loss is crucial for optimizing the performance of the drilling fluid and improving the drilling efficiency. At present, there are still some limitations in the measurement process, such as low measurement accuracy, complex operation, inconvenient data acquisition and processing and the like.

[0003] Therefore, it is necessary to design an API filtration loss automatic measuring device to solve the above problems. SUMMARY

[0004] The application aims to provide an API filtration loss automatic measuring device to solve the above problems and achieve the purpose of improving the accuracy and efficiency of filtration loss measurement.

[0005] To achieve the above purpose, the application provides the following scheme: an API filtration loss automatic measuring device, comprising

[0006] a support frame;

[0007] a measuring mechanism fixedly arranged on the support frame, the measuring mechanism being used for measuring the filtration loss of the drilling fluid;

[0008] a clamping and transferring mechanism fixedly arranged on the support frame, the clamping and transferring mechanism being used for clamping and transferring the measuring cup into the measuring mechanism;

[0009] a sealing mechanism fixedly arranged on the support frame, a sealing end of the sealing mechanism forming a sealed environment with the measuring cup and the measuring mechanism;

[0010] a quantitative liquid feeding mechanism fixedly arranged on the support frame, the quantitative liquid feeding mechanism being used for quantitatively pumping the drilling fluid into the measuring cup;

[0011] a cleaning mechanism in communication with the quantitative liquid feeding mechanism, the cleaning mechanism being used for cleaning the quantitative liquid feeding mechanism and the liquid feeding pipeline;

[0012] a pressurizing mechanism fixedly arranged on the support frame, the pressurizing mechanism being used for pressurizing the measuring cup containing the drilling fluid.

[0013] An automatic API fluid loss measuring device according to the present invention comprises a measuring mechanism comprising a positioning cylinder, which is fixedly connected to the support frame, an opening at the bottom end of the positioning cylinder and fixedly connected to the top end of a fluid loss container, a beaker being provided at the bottom end of the fluid loss container, a camera being provided at one side of the beaker, and a sealing ring II being provided at the top end of the positioning cylinder.

[0014] According to the present invention, an automatic API filtration loss measuring device is provided. A through hole is provided on the bottom wall of the measuring cup. A lower cover is detachably connected to the bottom end of the measuring cup through a thread. A filter paper is provided between the bottom end of the measuring cup and the lower cover. A sealing ring I is provided on the top end of the measuring cup.

[0015] According to an automatic measuring device for API filtration loss of the present invention, the clamping and transferring mechanism includes a screw slide II, the fixed end of the screw slide II is fixedly connected to the support frame, the movable end of the screw slide II is fixedly connected to the fixed end of the screw slide III, the movable end of the screw slide III is fixedly connected to a mechanical claw, and the moving direction of the movable end of the screw slide II is spatially perpendicular to the moving direction of the movable end of the screw slide III.

[0016] According to the present invention, an automatic API filtration loss measuring device, the sealing mechanism includes an electric push rod, which is vertically arranged and fixedly connected to the support frame at its fixed end. The movable end of the electric push rod is detachably connected to a push rod joint, and the bottom end of the push rod joint is detachably connected to an upper cover. When the upper cover descends to contact the top of the measuring cup, it forms a sealed environment with the measuring cup and the measuring mechanism.

[0017] According to the present invention, an automatic measuring device for API filtration loss is provided, wherein the quantitative liquid inlet mechanism includes a peristaltic pump, which is fixedly connected to the support frame, the liquid inlet end of the peristaltic pump is fixedly connected to the first port of the electric three-way ball valve I, the second port of the electric three-way ball valve I is fixedly connected to the drilling fluid container, the liquid outlet end of the peristaltic pump is fixedly connected to a quantitative cylinder, a quantitative liquid inlet portion is provided inside the quantitative cylinder, and the quantitative cylinder is fixedly connected to the upper cover through a pipeline.

[0018] According to the present invention, an automatic API filtration loss measuring device, the quantitative liquid inlet part includes a micro push rod, the micro push rod is vertically arranged and the fixed end is fixedly connected to the support frame, the piston end of the micro push rod is fixedly connected to the piston through the piston fixing frame, and the piston is sealingly slidably arranged in the quantitative cylinder.

[0019] The API filter loss automatic measuring device based on the application, the cleaning mechanism includes a water tank and a screw slide table I, the water tank is fixedly communicated with the third port of the electric three-way ball valve I, the fixed end of the screw slide table I is fixedly connected with the support frame, and the moving end of the screw slide table I is fixedly connected with a water receiving disc.

[0020] The API filter loss automatic measuring device based on the application, the pressurizing mechanism includes an air compressor, the air outlet end of the air compressor is fixedly communicated with one end of an electric ball valve II, the other end of the electric ball valve II is fixedly communicated with the first port of an electric three-way ball valve II, the second port of the electric three-way ball valve II is fixedly communicated with one end of an electric ball valve IV, the other end of the electric ball valve IV is fixedly communicated with the upper cover, and one end of an electric ball valve III is fixedly communicated with the third port of the electric three-way ball valve II.

[0021] The API filter loss automatic measuring device based on the application, the pipeline, which is communicated between the dosing cylinder and the upper cover, is provided with an electric ball valve I and a pressure gauge.

[0022] Compared with the prior art, the application has the following advantages and technical effects:

[0023] The clamping and transferring mechanism can easily grab the measuring cup into the measuring mechanism, the cleaning mechanism can clean and maintain the key components, the interference of residual drilling fluid in the next measurement is avoided, the sealing mechanism can guarantee the concentricity with the measuring cup, the measuring cup is sealed, the operation accuracy is greatly reduced, and the measurement is easier, and the measuring mechanism can real-time reflect the on-site condition and record the filter loss. BRIEF DESCRIPTION OF DRAWINGS

[0024] In order to more clearly illustrate the technical solutions in the embodiments of the application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments. Obviously, the drawings in the following description only some embodiments of the application, and for those skilled in the art, other drawings can also be obtained without creative labor based on these drawings:

[0025] Figure 1 It is a front view of the application;

[0026] Figure 2 It is a back view of the application;

[0027] Figure 3 It is a schematic view of the measuring mechanism of the application;

[0028] Figure 4 It is a schematic view of the dosing cylinder of the application;

[0029] Figure 5 It is a schematic view of the water receiving disc of the application;

[0030] Figure 6 This is a schematic diagram of a rectangular frame of the present invention;

[0031] Figure 7 This is a schematic diagram of the positioning cylinder of the present invention;

[0032] Figure 8 This is a schematic diagram of the measuring cup of the present invention;

[0033] Figure 9 It is a process flow chart of the present invention.

[0034] Among them, 1. Electric push rod; 2. Push rod joint; 3. Upper cover; 4. Mechanical claw; 5. Screw slide II; 6. Electric ball valve IV; 7. Measuring cup; 8. Screw slide I; 9. Electric ball valve III; 10. Electric ball valve II; 11. Electric three-way ball valve II; 12. Beaker; 13. Camera; 14. Electric three-way ball valve I; 15. Positioning cylinder; 16. Measuring cylinder; 17. Electric ball valve I; 18. Piston; 19. Water collecting tray; 20. Piston fixing bracket; 21. Micro push rod; 22. Pressure gauge; 23. Screw slide III; 24. Peristaltic pump; 25. Rectangular frame; 26. Sealing ring I; 27. Sealing ring II; 28. Lower cover; 29. ​​Filter paper; 30. Filtration container. DETAILED DESCRIPTION

[0035] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0036] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0037] Reference Figures 1 to 9 As shown, the present invention provides an automatic measuring device for API fluid loss, comprising a support frame;

[0038] A measuring mechanism is fixedly mounted on the support frame and is used to measure the filtration loss of the drilling fluid;

[0039] A clamping and transferring mechanism is fixedly arranged on the support frame, and is used to clamp and transfer the measuring cup 7 into the measuring mechanism;

[0040] The sealing mechanism is fixedly mounted on the support frame, and the sealing end of the sealing mechanism forms a sealed environment with the measuring cup 7 and the measuring mechanism;

[0041] A quantitative liquid inlet mechanism is fixedly arranged on the support frame and is used to quantitatively pump drilling fluid into the measuring cup 7;

[0042] A cleaning mechanism is connected to the quantitative liquid inlet mechanism and is used to clean the quantitative liquid inlet mechanism and the liquid inlet pipeline;

[0043] The pressurizing mechanism is fixedly arranged on the support frame and is used to pressurize the measuring cup 7 containing the drilling fluid.

[0044] Furthermore, the measuring mechanism includes a positioning cylinder 15, which is fixedly connected to the support frame. The bottom end of the positioning cylinder 15 is open and fixedly connected to the top of the filtration loss container 30. The bottom end of the filtration loss container 30 is correspondingly provided with a beaker 12, and a camera 13 is correspondingly provided on one side of the beaker 12. A sealing ring II 27 is provided at the top of the positioning cylinder 15.

[0045] Beaker 12 collects the filtrate first, and camera 13 performs online detection. The specific steps are: select an image in beaker 12 to mark a trapezoidal area, calculate the center X coordinate, and the image is symmetrical on both sides and will appear in pairs. Use the Robert trapezoid operator to detect edge points. The calculation formula is:

[0046] Δf x (x,y)=f(x,y)-f(x-1,y-1),

[0047] Δf y (x,y)=f(x-1,y)-f(x,y-1),

[0048] G|Δf(x,y)|≈|Δf x (x,y)|-|Δf y (x,y)|,

[0049] Select an appropriate threshold t to separate the edge points and make the beaker 12 bilaterally symmetrical. The central axis is obtained by the calculation formula:

[0050] Where x c is the base coordinate of the central point, x l ,x r are the left and right edge points of the same row;

[0051] The number of occurrences of the reference value of the center point of each area is calculated according to the following formula:

[0052] Where N(x) is the center point reference value at x c = the number of occurrences at x, K is the region size, and the most likely region is the center of S(x);

[0053] Use the average to find the final calculated value of the center point:

[0054] Where x c The value range of is the area where S(x) obtains the maximum value;

[0055] Since the liquid lost from the drilling fluid is black and the beaker 12 is colorless and transparent, it is easy to find the edge point of the image and then calculate the liquid level height. The formula is as follows:

[0056] Where D is the number of pixels y that constitute the edge of the liquid surface i is the Y coordinate of the edge point.

[0057] Furthermore, a through hole is opened on the bottom wall of the measuring cup 7, and a lower cover 28 is detachably connected to the bottom end of the measuring cup 7 by thread. A filter paper 29 is arranged between the bottom end of the measuring cup 7 and the lower cover 28, and a sealing ring I 26 is arranged at the top end of the measuring cup 7.

[0058] Furthermore, the clamping and transferring mechanism includes a screw slide Ⅱ5, the fixed end of the screw slide Ⅱ5 is fixedly connected to the support frame, the movable end of the screw slide Ⅱ5 is fixedly connected to the fixed end of the screw slide Ⅲ23, the movable end of the screw slide Ⅲ23 is fixedly connected to the mechanical claw 4, and the moving direction of the movable end of the screw slide Ⅱ5 is vertical to the moving direction of the movable end of the screw slide Ⅲ23 in space.

[0059] Mechanical claw 4 uses a flexible claw, adopts a 995 servo, and PID control. The potentiometer converts the angle between the claws into an electrical signal. The differential amplifier amplifies the signal and sends it to the servo, driving the mechanical claw 4 to open and close. The angle between the claws is converted into an electrical signal by another potentiometer and fed back to the differential amplifier to realize the opening and closing of the mechanical claw 4.

[0060] Furthermore, the sealing mechanism includes an electric push rod 1, which is vertically arranged and fixedly connected to the support frame at its fixed end. The movable end of the electric push rod 1 is detachably connected to a push rod joint 2, and the bottom end of the push rod joint 2 is detachably connected to an upper cover 3. When the upper cover 3 descends to contact the top of the measuring cup 7, it forms a sealed environment with the measuring cup 7 and the measuring mechanism.

[0061] Sealing rings I 26 and II 27 are installed in the sealing grooves of the measuring cup 7 and positioning cylinder 15, respectively. The electric push rod 1 drives the upper cover 3 downward. The upper cover 3, with its large contact area, can compress sealing ring I 26, forming an end-face seal. The top diameter of the measuring cup 7 is larger than that of the positioning cylinder 15, similarly compressing sealing ring II 27 and forming an end-face seal. The measuring cup 7 and lower cover 28 are threaded together, clamping the filter screen and filter paper 29. The positioning cylinder 15 is also threadedly fixed to the plate and has a sealing groove at the top. The measuring cup 7 has a tapered design in the middle to facilitate downward flow of filtrate and reduce measurement errors. The upper cover 3 presses on the measuring cup 7, transmitting force from the upper cover 3 to the measuring cup 7, which in turn transmits force to the positioning cylinder 15, which in turn transmits force to the plate, which supports the entire measuring device.

[0062] Furthermore, the quantitative liquid inlet mechanism includes a peristaltic pump 24, which is fixedly connected to the support frame. The liquid inlet end of the peristaltic pump 24 is fixedly connected to the first port of the electric three-way ball valve Ⅰ14, and the second port of the electric three-way ball valve Ⅰ14 is fixedly connected to the drilling fluid container. The liquid outlet end of the peristaltic pump 24 is fixedly connected to the quantitative cylinder 16, and a quantitative liquid inlet part is provided inside the quantitative cylinder 16. The quantitative cylinder 16 is fixedly connected to the upper cover 3 through a pipeline.

[0063] Furthermore, the quantitative liquid inlet part includes a micro push rod 21, which is vertically arranged and the fixed end is fixedly connected to the support frame. The piston end of the micro push rod 21 is fixedly connected to the piston 18 through the piston fixing frame 20, and the piston 18 is sealed and slidably arranged in the quantitative cylinder 16.

[0064] The micro push rod 21 is fixed to the right side plate with bolts, and the metering cylinder 16 is fixed to the right side plate by two pipe clamps. The piston fixing frame 20 is used to clamp the top of the piston 18. The micro push rod 21 pushes the piston 18 to move in the metering cylinder 16. There are two holes in the upper part of the metering cylinder 16, one inlet and the other is an overflow port for excess liquid. The outlet is connected to the electric ball valve I 17 at the bottom to control the specific amount of liquid entering the measuring cup 7.

[0065] Furthermore, the cleaning mechanism includes a clean water tank and a screw slide Ⅰ8. The clean water tank is fixedly connected to the third port of the electric three-way ball valve Ⅰ14. The fixed end of the screw slide Ⅰ8 is fixedly connected to the support frame. The movable end of the screw slide Ⅰ8 is fixedly connected to the water receiving tray 19.

[0066] The screw slide uses a small stepping motor, adopts a high-performance STC8A single-chip microcomputer as a stepping motor control part, sets the highest priority of a stepping motor to a slide movement control subroutine, then is an input subroutine and a display output subroutine, uses a timer as an interrupt time, makes the two subroutines work at a specific frequency, and the stepping motor controller generates a pulse signal for driving the stepping motor according to the rotation speed, acceleration and two control bits of positive and negative to control the current amplitude and direction of the two coils, drives the screw slide I 8 to control the horizontal movement of the water receiving plate 19; the screw slide III 23 is fixed on the slide block of the screw slide II 5 by a connecting plate to form a T-shaped structure, the mechanical claw 4 is fixed on the slide block of the screw slide III by a plate, and the two slides can work together to make linear motion, clamp and release the measuring cup 7.

[0067] The Z-shaped connecting plate is fixed at both ends by bolts to the slide block of the screw slide I 8 and the water receiving plate 19, the slide uses a ball screw, has high wear resistance and high precision, is supported and driven by a linear guide rail, and the side surface of the screw slide I 8 is provided with a limit switch; after the measurement is completed, the upper cover 3 is lifted, the slide block drives the water receiving plate 19 to move horizontally to the lower side of the upper cover 3 and automatically stops, the peristaltic pump 24 extracts clean water, the residual drilling fluid is washed out from the pipeline through the quantitative cylinder 16, and the waste water is collected from the bottom of the water receiving plate 19.

[0068] Further, the pressurizing mechanism includes an air compressor, the air outlet end of the air compressor is fixedly connected with one end of the electric ball valve II 10, the other end of the electric ball valve II 10 is fixedly connected with the first port of the electric three-way ball valve II 11, the second port of the electric three-way ball valve II 11 is fixedly connected with one end of the electric ball valve IV 6, the other end of the electric ball valve IV 6 is fixedly connected with the upper cover 3, and the third port of the electric three-way ball valve II 11 is fixedly connected with one end of the electric ball valve III 9.

[0069] Further, the pipeline, in which the quantitative cylinder 16 is communicated with the upper cover 3, is provided with the electric ball valve I 17 and the pressure gauge 22.

[0070] The electric push rod 1 is threadedly connected to the push rod joint 2 to press the measuring cup 7 and seal the end face; the top surface of the positioning cylinder 15 is provided with a sealing groove to fix the position of the measuring cup 7 to be measured; the upper cover 3 is threadedly connected to the push rod joint 2; the top of the measuring cup 7 is provided with a sealing groove, and the bottom of the filtration loss container is provided with an internal thread to be connected to the lower cover 28; the lower cover 28 is threadedly connected to the bottom of the measuring cup 7 to press the filter paper 29; the mechanical claw 4 is used to grasp the measuring cup 7 to the positioning cylinder 15; the screw slide II 5 and the screw slide III 23 are used to control the parallel movement of the mechanical claw 4 up and down and left and right, and the screw slide I 8 controls the horizontal movement of the water receiving tray 19; the beaker 12 is used to collect the filtrate; the micro push rod 21 is bolted to the piston fixing frame 20 to The piston 18 is pushed to move; the piston 18 is fixed by the piston fixing frame 20 and reciprocates in the metering cylinder 16 to transport drilling fluid and clean water; the metering cylinder 16 is used to control the volume of drilling fluid or clean water entering the measuring cup 7 each time, and the excess amount will overflow from the other port; the peristaltic pump 24 is used to extract drilling fluid and clean water; the pressure gauge 22 is used to directly read the pressure value; a circular hole is opened in the center of the water receiving tray 19, a cylindrical joint of a hose is welded to the bottom, and 4 more circular holes are opened on the side. The water receiving tray 19 is used to collect waste water from the cleaning pipeline, which flows out from the bottom of the water receiving tray 19; the support frame includes a rectangular frame 25, which is composed of 16 rectangular tubes, 4 long rectangular tubes, 6 medium rectangular tubes, and 6 short rectangular tubes, which are used to support the entire device.

[0071] The present invention also provides a process flow of an automatic API filtration loss measuring device, comprising:

[0072] Start the mechanical claw 4 to grab the measuring cup 7, then start the screw slide III 23 to move upward, then start the screw slide II 5 to move to the top of the positioning cylinder 15, start the screw slide III 23 to move downward again to place the measuring cup 7 into the positioning cylinder 15, the mechanical claw 4 is released, and then the screw slide II 5 drives the mechanical claw 4 to leave;

[0073] The electric push rod 1 drives the upper cover 3 to move downward until the sealing ring I 26 on the measuring cup 7 and the sealing ring II 27 between the measuring cup 7 and the positioning cylinder 15 are compressed; the electric three-way ball valve I 14 switches to the drilling fluid path, and the peristaltic pump 24 draws drilling fluid, which first reaches the metering cylinder 16. The excess drilling fluid will flow out from the other port, opening the electric ball valve I 17. At the same time, the micro push rod 21 drives the piston 18 to move downward, pumping the drilling fluid into the measuring cup 7;

[0074] Open the electric ball valve II10 and the electric ball valve IV6, close the electric ball valve I17 and the electric ball valve III9, switch the electric three-way ball valve II11 to the pressure port, and let the pressurized air in. The air passes through the pressure gauge 22 and reaches the measuring cup 7. The pressure gauge 22 can reflect the pressure in the measuring cup 7 in real time. When the pressure reaches the set value, it is maintained for 30 minutes.

[0075] After 30 minutes, the drilling fluid loss is collected at the outlet of the fluid loss container, recorded in real time by camera 13, and uploaded to the computer. When the collection is complete, the electric three-way ball valve II 11 switches to the pressure relief port, opening the electric ball valve III 9 to relieve pressure from the outlet pipeline. When the pressure relief is complete, the electric push rod 1 lifts upward, separating the measuring cup 7 and the upper cover 3.

[0076] Start the screw slide Ⅰ8 to drive the water receiving tray 19 to the bottom of the upper cover 3, the electric three-way ball valve Ⅰ14 switches to the water channel, start the peristaltic pump 24, pump clean water into the metering cylinder 16 first, open the electric ball valve Ⅰ17, and the micro push rod 21 pushes the clean water out of the pipeline. The cleaned waste water flows from the upper cover 3 to the water receiving tray 19, and the waste water flows out from the bottom of the water receiving tray 19;

[0077] Start the screw slide II 5 to make the mechanical claw 4 grab the measuring cup 7, and the screw slide III 23 drives the measuring cup 7 to move upward and disengage from the positioning cylinder 15. Finally, the two slides cooperate to put the measuring cup 7 back to its original position.

[0078] In the description of the present invention, it should be understood that the terms "longitudinal", "transverse", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0079] The embodiments described above are merely descriptions of preferred embodiments of the present invention and are not intended to limit the scope of the present invention. Without departing from the spirit of the present invention, various modifications and improvements made to the technical solutions of the present invention by ordinary technicians in this field should fall within the scope of protection of the present invention.

Claims

1. An automatic measuring device for API fluid loss, characterized in that: include Support frame; A measuring mechanism, fixedly mounted on the support frame, for measuring the filtration loss of the drilling fluid; A clamping and transferring mechanism, fixedly arranged on the support frame, and used for clamping and transferring the measuring cup (7) into the measuring mechanism; A sealing mechanism is fixedly arranged on the support frame, wherein a sealing end of the sealing mechanism forms a sealed environment with the measuring cup (7) and the measuring mechanism; A quantitative liquid inlet mechanism is fixedly arranged on the support frame, and is used for quantitatively pumping drilling fluid into the measuring cup (7); a cleaning mechanism, connected to the quantitative liquid inlet mechanism, and used for cleaning the quantitative liquid inlet mechanism and the liquid inlet pipeline; A pressurizing mechanism, fixedly arranged on the support frame, and used for pressurizing the measuring cup (7) containing drilling fluid; The measuring mechanism comprises a positioning cylinder (15), the positioning cylinder (15) is fixedly connected to the support frame, the bottom end of the positioning cylinder (15) is open and fixedly connected to the top end of the filtration loss container (30), the bottom end of the filtration loss container (30) is correspondingly provided with a beaker (12), one side of the beaker (12) is correspondingly provided with a camera (13), and the top end of the positioning cylinder (15) is provided with a sealing ring II (27); The bottom wall of the measuring cup (7) is provided with a through hole, the bottom end of the measuring cup (7) is detachably connected to a lower cover (28) by a thread, a filter paper (29) is provided between the bottom end of the measuring cup (7) and the lower cover (28), and a sealing ring I (26) is provided at the top end of the measuring cup (7).

2. The automatic API fluid loss measuring device according to claim 1, characterized in that: The clamping transfer mechanism includes a screw slide II (5), the fixed end of the screw slide II (5) is fixedly connected to the support frame, the movable end of the screw slide II (5) is fixedly connected to the fixed end of the screw slide III (23), the movable end of the screw slide III (23) is fixedly connected to the mechanical claw (4), and the moving direction of the movable end of the screw slide II (5) is vertical to the moving direction of the movable end of the screw slide III (23) in space.

3. The automatic measuring device for API fluid loss according to claim 1, characterized in that: The sealing mechanism comprises an electric push rod (1), the electric push rod (1) being vertically arranged and having a fixed end fixedly connected to the support frame, the movable end of the electric push rod (1) being detachably connected to a push rod joint (2), the bottom end of the push rod joint (2) being detachably connected to an upper cover (3), and the upper cover (3) forming a sealed environment with the measuring cup (7) and the measuring mechanism when it descends to contact the top end of the measuring cup (7).

4. The automatic API fluid loss measuring device according to claim 3, characterized in that: The quantitative liquid inlet mechanism comprises a peristaltic pump (24), the peristaltic pump (24) is fixedly connected to the support frame, the liquid inlet end of the peristaltic pump (24) is fixedly connected to the first port of the electric three-way ball valve I (14), the second port of the electric three-way ball valve I (14) is fixedly connected to the drilling fluid container, the liquid outlet end of the peristaltic pump (24) is fixedly connected to the quantitative cylinder (16), a quantitative liquid inlet portion is provided inside the quantitative cylinder (16), and the quantitative cylinder (16) is fixedly connected to the upper cover (3) through a pipeline.

5. The automatic API fluid loss measuring device according to claim 4, characterized in that: The quantitative liquid inlet portion comprises a micro push rod (21), the micro push rod (21) is vertically arranged and the fixed end is fixedly connected to the support frame, the piston end of the micro push rod (21) is fixedly connected to the piston (18) via a piston fixing frame (20), and the piston (18) is sealingly slidably arranged in the quantitative cylinder (16).

6. The automatic API fluid loss measuring device according to claim 4, characterized in that: The cleaning mechanism includes a clean water tank and a screw slide I (8), the clean water tank is fixedly connected to the third port of the electric three-way ball valve I (14), the fixed end of the screw slide I (8) is fixedly connected to the support frame, and the movable end of the screw slide I (8) is fixedly connected to a water receiving tray (19).

7. The automatic API fluid loss measuring device according to claim 3, characterized in that: The pressurizing mechanism includes an air compressor, wherein the air outlet end of the air compressor is fixedly connected to one end of an electric ball valve II (10), the other end of the electric ball valve II (10) is fixedly connected to the first port of an electric three-way ball valve II (11), the second port of the electric three-way ball valve II (11) is fixedly connected to one end of an electric ball valve IV (6), the other end of the electric ball valve IV (6) is fixedly connected to the upper cover (3), and the third port of the electric three-way ball valve II (11) is fixedly connected to one end of an electric ball valve III (9).

8. The automatic API fluid loss measuring device according to claim 4, characterized in that: An electric ball valve I (17) and a pressure gauge (22) are provided on the pipeline communicating between the metering cylinder (16) and the upper cover (3).

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