A drilling fluid high temperature and high pressure test device

Abstract

The present invention belongs to the technical field of drilling fluid detection, and in particular, relates to a high-temperature and high-pressure test device for drilling fluid, including a receiver assembly, a temperature controller and a hollow base, the upper surface of the hollow base is fixedly connected to a support column, the upper surface of the support column is fixedly connected to a heating shell assembly, the inner wall of the heating shell assembly is fixedly connected to a convex inner cylinder, and the inner wall of the convex inner cylinder is movably connected to a drilling fluid cup assembly. The high-temperature and high-pressure test device for drilling fluid of the present invention has the functions of stable placement and drilling fluid pretreatment through nitrogen input, and the test device is easy to operate, and can ensure that the device can reliably perform high-temperature and high-pressure tests on drilling fluid, and after the nitrogen stops being delivered, the test device can quickly and automatically cool the drilling fluid cup assembly after the test, and the drilling fluid cup assembly is easy to open, thereby effectively improving the convenience and efficiency of the test device in testing drilling fluid.

Description

Technical Field

[0001] The invention belongs to the technical field of drilling fluid detection, and in particular relates to a high-temperature and high-pressure testing device for drilling fluid. Background Art

[0002] Drilling fluid is a specially formulated liquid used in drilling operations. It has multiple functions, including balancing wellhead pressure, cooling and lubricating the drill bit, cleaning the wellhead and removing drill cuttings, controlling formation fluids, etc. Drilling fluid is usually composed of water, mud, oil or gas. The specific formula depends on factors such as the depth of the well, geological conditions, and operational requirements.

[0003] A high-temperature and high-pressure filter loss meter is needed in the process of drilling fluid quality testing. For example, the Chinese patent authorization number CN211086234U discloses a high-temperature and high-pressure filter loss meter. However, the high-temperature and high-pressure filter loss meter has a high center of gravity and poor stability during use, and is easily tipped over by the shaking of the air pipe, thereby affecting the reliability of the use of the high-temperature and high-pressure filter loss meter. At the same time, the high-temperature and high-pressure filter loss meter also has a relatively cumbersome operation process during use. For example, a wrench is needed to control the opening and closing of the connecting valve stem, and the operation process is relatively inconvenient. After the test is completed, it is necessary to wait for the drilling fluid cup to cool before taking it out to avoid high-temperature burns on the skin of the staff. After that, when testing another batch of drilling fluid, it is necessary to wait for the drilling fluid to be fully mixed, resulting in a relatively time-consuming drilling fluid testing process, which seriously affects the convenience and efficiency of the high-temperature and high-pressure filter loss meter in testing the drilling fluid.

[0004] Therefore, we propose a drilling fluid high temperature and high pressure test device to solve the above problems. Summary of the invention

[0005] The purpose of the present invention is to provide a high temperature and high pressure testing device for drilling fluid in view of the above problems.

[0006] To achieve the above-mentioned purpose, the present invention adopts the following technical solutions: a drilling fluid high-temperature and high-pressure test device, comprising a receiver assembly, a temperature controller and a hollow base, the upper surface of the hollow base is fixedly connected to a support column, the upper surface of the support column is fixedly connected to a heating shell assembly, the inner wall of the heating shell assembly is fixedly connected to a convex inner cylinder, the inner wall of the convex inner cylinder is movably connected to a drilling fluid cup assembly, the bottom end of the heating shell assembly is provided with a circular through hole matched with the bottom end of the drilling fluid cup assembly, the top end of the hollow base is connected to a drilling fluid pretreatment mechanism and a cooling mechanism, and the bottom inner wall of the hollow base is fixedly connected to a stabilizing mechanism;

[0007] The drilling fluid cup assembly comprises a cup body, a cup cover movably connected to the bottom end of the cup body, a sealing ring is connected to the top end of the cup cover, a filter screen is fixedly connected to the inner wall of the cup cover, a filter paper is movably connected to the upper surface of the filter screen, a plurality of elastic protrusions are fixedly connected to the bottom end of the cup body, a card groove matching with the elastic protrusions is opened on the outer wall of the cup cover, a retaining ring is fixedly connected to the inner wall of the bottom end of the heating shell assembly, the inner wall of the retaining ring is movably contacted with the outer wall of the elastic protrusion, a first control valve is threadedly sealed and connected to the top end of the cup body, a three-way valve is fixedly connected to the top end of the first control valve, a first pipe joint is fixedly connected to the input end of the three-way valve, a second control valve is threadedly sealed and connected to the outer wall of the cup cover, the bottom end of the second control valve is fixedly connected to the top end of the receiver assembly, the input end of the receiver assembly is fixedly connected to the second pipe joint, and the movable ends of the second pipe joints are jointly fixedly connected to the air supply mechanism.

[0008] In the above-mentioned high-temperature and high-pressure testing device for drilling fluid, the drilling fluid pretreatment mechanism includes a fixed plate fixedly connected to the upper surface of the hollow base, the outer wall of the fixed plate is fixedly connected to a rolling bearing, the inner walls of the inner rings of the two rolling bearings are commonly fixedly connected to a placing tube, the inner wall of the placing tube is movably connected to a mixing tube, the bottom end of the placing tube is fixedly connected to a rotating rod, the bottom end of the rotating rod is connected to the top of the hollow base through a sealing bearing, the bottom end of the rotating rod is fixedly connected to a plurality of fan blades, the bottom end of the rotating rod is movably sleeved with a connecting tube, the side end of the connecting tube is fixedly embedded in the side wall of the hollow base, the side end of the connecting tube is fixedly connected to an air pipe, and the top of the air pipe is fixedly connected to the movable end of the first pipe joint.

[0009] In the above-mentioned high-temperature and high-pressure testing device for drilling fluid, the cooling mechanism includes an air inlet box fixedly connected to the upper surface of the hollow base, the side wall of the air inlet box is fixedly connected to a semiconductor refrigerator, the cooling side of the semiconductor refrigerator is fixedly connected to a cooling mesh block, the upper surface of the air inlet box is fixedly connected to an air pump, the suction end of the air pump and the upper surface of the air inlet box are fixedly connected to a bent pipe, the output end of the air pump is fixedly connected to a delivery pipe, the top end of the delivery pipe is fixedly connected to the bottom end of the insulating shell, and the bottom inner wall of the hollow base is fixedly connected to a touch pressure switch.

[0010] In the above-mentioned high-temperature and high-pressure testing device for drilling fluid, the stabilizing mechanism includes a supporting tube fixedly connected to the four corners of the lower surface of the hollow base, the bottom end of the supporting tube is fixedly connected to a sealing gasket, the inner wall of the supporting tube is movably connected to a piston, the top of the piston is fixedly connected to a guide rod, the top of the guide rod passes through the inner wall of the hollow base and is fixedly connected to a sealing block, the bottom outer wall of the sealing block is movably connected to a sealing support ring, the outer wall of the sealing support ring is fixedly connected to an air cylinder, the bottom end of the air cylinder is fixedly connected to the inner wall of the hollow base, the top ends of the multiple air cylinders are commonly fixedly sleeved with a partition, the side walls of the partition are fixedly connected to the inner wall of the hollow base, the bottom end of the sealing block is fixedly connected to a plurality of rubber strips, the bottom ends of the rubber strips are fixedly connected to the inner wall of the hollow base, and the bottom outer walls of the multiple air cylinders are commonly fixedly connected to a connecting piece.

[0011] In the above-mentioned high-temperature and high-pressure testing device for drilling fluid, the gas supply mechanism includes two pressure-regulating valves, and the opposite ends of the two pressure-regulating valves are fixedly connected to an adjustable pressure gas source valve, and the opposite ends of the two pressure-regulating valves are fixedly connected to hoses, wherein the side end of one of the hoses is fixedly connected to the movable end of the second pipe joint, and the side end of the other hose passes through the inner wall of the hollow base and is fixedly connected to the outer wall of the connecting piece.

[0012] In the above-mentioned high-temperature and high-pressure testing device for drilling fluid, a heat dissipation mesh sleeve is fixedly embedded in the outer wall of the cup body, and a plurality of heat dissipation through holes are opened on the upper surface of the top of the cup body located at the heat dissipation mesh sleeve.

[0013] In the above-mentioned high-temperature and high-pressure testing device for drilling fluid, a temperature regulating through hole is provided on the upper surface of the heating shell assembly.

[0014] In the above-mentioned high-temperature and high-pressure drilling fluid test device, the heating shell assembly includes an insulating shell, a heating sleeve, an electric heating tube and a thermometer, and the outer wall of the insulating shell is provided with installation through holes matching the electric heating tube and the thermometer.

[0015] In the above-mentioned drilling fluid high-temperature and high-pressure testing device, the output end of the air pump is fixedly connected to a reversing valve, the top end of the reversing valve is fixedly connected to the bottom end of the delivery pipe, the side end of the reversing valve is fixedly connected to an L-shaped tube, the top end of the L-shaped tube is located at the bottom end of the receiver assembly, and the outer wall of the air inlet box is fixedly connected to a temporary switch.

[0016] Compared with the existing technology, the advantages of a drilling fluid high temperature and high pressure test device are:

[0017] 1. Through the stabilizing mechanism and air supply mechanism, when the drilling fluid cup assembly is loaded with drilling fluid for testing, the nitrogen source is first connected through the air supply mechanism and air is supplied. The nitrogen drives the piston upward through the stabilizing mechanism. During the upward movement of the piston, the support tube cooperates with the sealing gasket to suck the bottom plate with negative pressure to stabilize the hollow base and avoid tipping caused by shaking of the pipeline during the operation of the device. This mechanism enables the test device to have a stable placement function through nitrogen delivery, and can ensure that the device can reliably perform high temperature and high pressure tests on drilling fluids.

[0018] 2. Through the drilling fluid pretreatment mechanism, when nitrogen enters the top of the hollow base, it will be transported to the three-way valve and the first control valve through the connecting tube and the air pipe. The gas source control process of the first control valve and the second control valve is simple and does not require wrench operation. Then the nitrogen enters the drilling fluid cup assembly for testing. At this time, the nitrogen drives the mixing tube containing the next batch of drilling fluid to rotate through the drilling fluid pretreatment mechanism. The rotation of the mixing tube can ensure that the components in the next batch of drilling fluid are evenly mixed, and the device can quickly carry out the next batch of drilling fluid test after the test of one batch of drilling fluid is completed, without wasting time waiting for the preparation of the next batch of drilling fluid. The mechanism enables the test device to have the function of drilling fluid pretreatment through nitrogen delivery, ensuring that the test device can quickly test the next batch of drilling fluid tests, and the test device is easy to operate, thereby effectively improving the convenience and efficiency of the test device in testing drilling fluid.

[0019] 3. Through the cooling mechanism and drilling fluid cup assembly, after the drilling fluid test in the drilling fluid cup assembly is completed, the adjustable pressure gas source valve is closed and the nitrogen delivery is stopped. At this time, the touch pressure switch loses the air pressure extrusion and resets, and the cooling mechanism is energized to work. The cold air can quickly cool the surface of the drilling fluid cup assembly, so that the staff can take it out from the heating shell assembly in time without causing scalding to the staff. After the drilling fluid cup assembly is taken out, the cup cover can be directly pulled out. During the removal of the cup cover, there is no need to remove multiple bolts, which saves time and effort. The mechanism enables the test device to automatically and quickly cool the drilling fluid cup assembly after the test by stopping the delivery of nitrogen, and the opening process of the drilling fluid cup assembly is simple, which can effectively improve the convenience and efficiency of the test device in testing drilling fluid.

[0020] 4. Through the provision of a temporary switch, reversing valve and L-shaped tube, before the filtrate is discharged through the valve at the bottom of the receiver assembly, the reversing valve, air pump and semiconductor refrigerator are started through the temporary switch, and the air pump delivers the air cooled by the semiconductor refrigerator in the air inlet box to the L-shaped tube through the reversing valve, and the L-shaped tube delivers the cold air to the bottom of the receiver assembly. The cold air can cool the high-temperature filtrate in the receiver assembly, liquefy the gaseous filtrate, and avoid the gaseous filtrate from drifting and overflowing during the discharge into the measuring cylinder, thereby ensuring the accuracy of the filtrate measurement. This mechanism can effectively improve the accuracy of the filtrate measurement of the test device. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a structural schematic diagram of a drilling fluid high temperature and high pressure test device provided by the present invention;

[0022] Figure 2 It is a structural schematic diagram of a heating shell assembly in a drilling fluid high temperature and high pressure test device provided by the present invention;

[0023] Figure 3 It is a structural schematic diagram of a stabilizing mechanism in a drilling fluid high temperature and high pressure testing device provided by the present invention;

[0024] Figure 4 It is a structural schematic diagram of a cooling mechanism in a drilling fluid high temperature and high pressure test device provided by the present invention;

[0025] Figure 5 It is a structural schematic diagram of a drilling fluid cup assembly in a drilling fluid high temperature and high pressure test device provided by the present invention;

[0026] Figure 6 yes Figure 2 Schematic diagram of the structure of part A;

[0027] Figure 7 It is a partially enlarged structural schematic diagram of a drilling fluid high temperature and high pressure test device provided by the present invention.

[0028] In the figure: 1 receiver assembly, 2 temperature controller, 3 hollow base, 4 air supply mechanism, 41 pressure regulating valve, 42 adjustable pressure air source valve, 43 hose, 5 heating shell assembly, 51 insulation shell, 52 heating sleeve, 53 electric heating tube, 54 thermometer, 6 stabilizing mechanism, 61 support cylinder, 62 sealing pad, 63 piston, 64 guide rod, 65 blocking block, 66 sealing support ring, 67 air cylinder, 68 partition, 69 rubber strip, 610 connecting piece, 7 drilling fluid cup assembly, 71 cup body, 72 cup cover, 73 sealing ring, 74 filter screen plate, 75 filter paper, 76 elastic protrusion, 77 slot, 78 stopper ring, 79 the first control valve, 710 the first pipe joint, 711 the second control valve, 712 the second pipe joint, 713 the three-way valve, 8 the drilling fluid pretreatment mechanism, 81 the fixing plate, 82 the rolling bearing, 83 the placing cylinder, 84 the mixing cylinder, 85 the rotating rod, 86 the fan blade, 87 the connecting cylinder, 88 the air pipe, 9 the cooling mechanism, 91 the air inlet box, 92 the semiconductor refrigerator, 93 the cooling mesh block, 94 the air pump, 95 the elbow, 96 the delivery pipe, 97 the touch-pressure switch, 10 the convex inner cylinder, 11 the supporting column, 12 the heat dissipation mesh sleeve, 13 the heat dissipation through hole, 14 the temperature adjustment through hole, 15 the temporary switch, 16 the reversing valve, 17 the L-shaped pipe. DETAILED DESCRIPTION

[0029] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. 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 creative work are within the scope of protection of the present invention.

[0030] Example 1

[0031] like Figure 1-Figure 6 As shown, a high-temperature and high-pressure testing device for drilling fluid includes a receiver assembly 1, a temperature controller 2 and a hollow base 3. A support column 11 is fixedly connected to the upper surface of the hollow base 3. A heating shell assembly 5 is fixedly connected to the upper surface of the support column 11. A temperature regulating through hole 14 is provided on the upper surface of the heating shell assembly 5. The temperature regulating through hole 14 can avoid the occurrence of excessively high stability in the insulation shell 51. The heating shell assembly 5 includes an insulation shell 51, a heating sleeve 52, an electric heating tube 53 and a thermometer 54. The outer wall of the insulation shell 51 is provided with an installation through hole matched with the electric heating tube 53 and the thermometer 54. The heating shell assembly 5 can ensure that the drilling fluid is tested at a suitable temperature.

[0032] The inner wall of the heating shell component 5 is fixedly connected with a convex inner cylinder 10, and the inner wall of the convex inner cylinder 10 is movably connected with a drilling fluid cup component 7. The bottom end of the heating shell component 5 is provided with a circular through hole matched with the bottom end of the drilling fluid cup component 7. The top of the hollow base 3 is connected with a drilling fluid pretreatment mechanism 8. The drilling fluid pretreatment mechanism 8 includes a fixed plate 81 fixedly connected to the upper surface of the hollow base 3, and the outer wall of the fixed plate 81 is fixedly connected with a rolling bearing 82. The inner walls of the inner rings of the two rolling bearings 82 are commonly fixedly connected with a placement cylinder 83, and the inner wall of the placement cylinder 83 is movably connected with a mixing cylinder 84. The bottom end of the placement cylinder 83 is fixedly connected with a rotating rod 85, the bottom end of the rotating rod 85 is connected to the top end of the hollow base 3 through a sealed bearing, a plurality of fan blades 86 are fixedly connected to the bottom end of the rotating rod 85, a connecting tube 87 is movably sleeved on the bottom end of the rotating rod 85, the side end of the connecting tube 87 is fixedly embedded in the side wall of the hollow base 3, the side end of the connecting tube 87 is fixedly connected to an air pipe 88, the top end of the air pipe 88 is fixedly connected to the movable end of the first pipe joint 710, and this mechanism enables the drilling fluid high temperature and high pressure test device to have the functions of drilling fluid pretreatment and convenient operation, ensuring that the test device can quickly test the next batch of drilling fluid tests, thereby effectively improving the convenience and efficiency of the test device in testing drilling fluid.

[0033] A cooling mechanism 9 is connected to the top of the hollow base 3, and the cooling mechanism 9 includes an air inlet box 91 fixedly connected to the upper surface of the hollow base 3, a semiconductor refrigerator 92 fixedly connected to the side wall of the air inlet box 91, a cooling mesh block 93 fixedly connected to the cooling side of the semiconductor refrigerator 92, an air pump 94 fixedly connected to the upper surface of the air inlet box 91, a curved pipe 95 is fixedly connected to the suction end of the air pump 94 and the upper surface of the air inlet box 91, a delivery pipe 96 is fixedly connected to the output end of the air pump 94, the top of the delivery pipe 96 is fixedly connected to the bottom end of the insulating shell, and a touch pressure switch 97 is fixedly connected to the inner wall of the bottom end of the hollow base 3. This mechanism enables the test device to quickly cool the drilling fluid cup assembly 7 after the test, which can effectively improve the convenience and efficiency of the test device in testing the drilling fluid.

[0034] The inner wall of the bottom end of the hollow base 3 is fixedly connected with a stabilizing mechanism 6, which includes a support cylinder 61 fixedly connected to the four corners of the lower surface of the hollow base 3, a sealing gasket 62 fixedly connected to the bottom end of the support cylinder 61, a piston 63 movably connected to the inner wall of the support cylinder 61, a guide rod 64 fixedly connected to the top of the piston 63, the top of the guide rod 64 passes through the inner wall of the hollow base 3 and is fixedly connected to a blocking block 65, the outer wall of the bottom end of the blocking block 65 is movably connected to a sealing support ring 66, and the outer wall of the sealing support ring 66 is fixedly connected to an air cylinder 67, and the air cylinder 67 is fixedly connected to the outer wall of the air cylinder 67. The bottom end of the cylinder 67 is fixedly connected to the inner wall of the hollow base 3, the top ends of the multiple gas cylinders 67 are commonly fixedly sleeved with a partition 68, the side wall of the partition 68 is fixedly connected to the inner wall of the hollow base 3, the bottom end of the sealing block 65 is fixedly connected to a plurality of rubber strips 69, the bottom end of the rubber strips 69 is fixedly connected to the inner wall of the hollow base 3, and the bottom outer walls of the multiple gas cylinders 67 are commonly fixedly connected with a connecting piece 610. This mechanism can effectively improve the working stability of the drilling fluid high temperature and high pressure test device, and can ensure that the device can reliably perform the drilling fluid high temperature and high pressure test.

[0035] The drilling fluid cup assembly 7 includes a cup body 71, the outer wall of the cup body 71 is fixedly embedded with a heat dissipation mesh sleeve 12, the top of the cup body 71 is located at the heat dissipation mesh sleeve 12 and has a plurality of heat dissipation holes 13 on its upper surface, the heat dissipation mesh sleeve 12 can increase the heat dissipation area, thereby speeding up the heat dissipation of the cup body 71, and avoiding the staff from spending too much time waiting for the cup body 71 to cool down, the bottom end of the cup body 71 is movably connected with a cup cover 72, the top of the cup cover 72 is connected with a sealing ring 73, the inner wall of the cup cover 72 is fixedly connected with a filter screen plate 74, the upper surface of the filter screen plate 74 is movably connected with a filter paper sheet 75, the bottom end of the cup body 71 is fixedly connected with a plurality of elastic protrusions 76, the outer wall of the cup cover 72 is provided with a card groove 77 that matches the elastic protrusion 76, the bottom inner wall of the heating shell assembly 5 is fixedly connected with a retaining ring 78, the inner wall of the retaining ring 78 is in movable contact with the outer wall of the elastic protrusion 76, and the top thread of the cup body 71 is sealed A first control valve 79 is connected, the top of the first control valve 79 is fixedly connected to a three-way valve 713, the input end of the three-way valve 713 is fixedly connected to a first pipe joint 710, the outer wall of the cup cover 72 is threadedly sealed and connected to a second control valve 711, the bottom end of the second control valve 711 is fixedly connected to the top of the receiver assembly 1, the input end of the receiver assembly 1 is fixedly connected to a second pipe joint 712, and the movable ends of the second pipe joint 712 are commonly fixedly connected to an air supply mechanism 4, the air supply mechanism 4 includes two pressure regulating valves 41, the opposite ends of the two pressure regulating valves 41 are commonly fixedly connected to an adjustable pressure air source valve 42, the opposite ends of the two pressure regulating valves 41 are both fixedly connected to a hose 43, the side end of one of the hoses 43 is fixedly connected to the movable end of the second pipe joint 712, and the side end of the other hose 43 passes through the inner wall of the hollow base 3 and is fixedly connected to the outer wall of the connecting piece 610.

[0036] The operating principle of the present invention is described as follows: first, a certain amount of drilling fluid is placed in the drilling fluid cup assembly 7, and then the temperature inside the heating shell assembly 5 is raised to 150-230 degrees Celsius through the temperature controller, the electric heating tube 53 and the heating sleeve 52, and the pressure is adjusted to 4.2-7.1MPa. After the drilling fluid is filtered through the 2258 square millimeter filter paper layer for 30 minutes, the filtrate is received by the receiver assembly 1 and the measuring cylinder, and the data such as the filtration amount of the drilling fluid and the filter cake formed after the filtration are measured. At the same time, the nitrogen source is connected through the gas supply mechanism 4 and gas is supplied. Nitrogen is a clean gas without impurities, which will not pollute the test sample, and nitrogen has high stability and controllability, and the pressure and temperature can be accurately controlled as needed. Nitrogen The gas is transported to the connecting piece 610 through a group of pressure regulating valves 41 and hoses 43, and then the nitrogen enters the gas cylinders 67 respectively, and then the nitrogen lifts the sealing block 65, and the nitrogen passes through the gas cylinders 67 to enter the top of the hollow base 3, and then the sealing block 65 drives the guide rod 64 to move upward, and the guide rod 64 drives the piston 63 to move upward. During the upward movement of the piston 63, the support cylinder 61 cooperates with the sealing gasket 62 to negatively pressure the bottom plate to stabilize the hollow base 3, and the upward movement of the sealing block 65 drives the rubber strip 69 to stretch, and the rubber strip 69 stretches and stores energy to prepare for the reset of the sealing block 65 after the drilling fluid test is completed, so as to avoid the situation where the pipeline shakes and causes the device to tip over during operation. The mechanism can effectively improve the working stability of the drilling fluid high temperature and high pressure test device, and can ensure that the device can reliably perform the drilling fluid high temperature and high pressure test.

[0037] After the nitrogen enters the top of the hollow base 3, the nitrogen will be transported to the three-way valve 713 and the first control valve 79 through the connecting tube 87 and the air pipe 88. The process of controlling the gas source by the first control valve 79 and the second control valve 711 is simple and does not require wrench operation. Then the nitrogen enters the drilling fluid cup assembly 7 for testing. At this time, the nitrogen passes through the connecting tube 87 to drive the fan blade 86 to rotate, and the fan blade 86 rotates the rotating rod 85. The rotating rod 85 drives the placement tube 83 to rotate rapidly in the rolling bearing 82. Then the placement tube 83 drives the mixing tube 84 containing the next batch of drilling fluid to rotate. The rotation of the mixing tube 84 can ensure that the components in the next batch of drilling fluid are evenly mixed, and the device can quickly carry out the next batch of drilling fluid test after the test of one batch of drilling fluid is completed, and it will not take time to wait for the preparation of the next batch of drilling fluid, which saves time and effort. The mechanism enables the drilling fluid high temperature and high pressure test device to have the functions of drilling fluid pretreatment and convenient operation, ensuring that the test device can quickly test the next batch of drilling fluid test, thereby effectively improving the convenience and efficiency of the test device in testing drilling fluid;

[0038] In addition, due to the thin diameter of the air pipe 88, the internal air pressure at the top of the hollow base 3 is relatively high, and the pressure switch 97 is squeezed to cut off the power of the air pump 94 and the semiconductor refrigerator 92. After the drilling fluid test in the drilling fluid cup assembly 7 is completed, the adjustable pressure air source valve 42 is closed, and the nitrogen stops being delivered. At this time, the pressure switch 97 loses the air pressure squeeze and resets, and the air pump 94 and the semiconductor refrigerator 92 are powered on to work. The air pump 94 sucks the air in the air inlet box 91 that is cooled by the semiconductor refrigerator 92 and the cooling mesh block 93, and the air is then transported to the heat dissipation mesh sleeve 12 in the heating shell assembly 5 through the delivery pipe 96, and the cold air can quickly reach the drilling The surface of the drilling fluid cup assembly 7 is cooled down, so that the staff can take it out from the heating shell assembly 5 in time without causing burns to the staff. After the drilling fluid cup assembly 7 is taken out, the cup cover 72 loses the restraint of the retaining ring 78, and then the cup cover 72 is directly pushed with force to disengage the elastic block from the slot 77, and then the filter cake is taken out from the cup body 71 for measurement. During the removal of the cup cover 72, there is no need to remove multiple bolts, which saves time and effort. This mechanism enables the test device to quickly cool the drilling fluid cup assembly 7 after the test, and the opening process of the drilling fluid cup assembly 7 is simple, which can effectively improve the convenience and efficiency of the test device in testing drilling fluid.

[0039] Example 2

[0040] On the basis of Example 1, Figure 7 As shown, the output end of the air pump 94 is fixedly connected to a reversing valve 16, the top end of the reversing valve 16 is fixedly connected to the bottom end of the delivery pipe 96, the side end of the reversing valve 16 is fixedly connected to an L-shaped tube 17, the top end of the L-shaped tube 17 is located at the bottom end of the receiver assembly 1, and the outer wall of the air inlet box 91 is fixedly connected to a temporary switch 15.

[0041] Before the filtrate is discharged through the valve at the bottom of the receiver assembly 1, the reversing valve 16, the air pump 94 and the semiconductor refrigerator 92 are started through the temporary switch 15. The air pump 94 conveys the air cooled by the semiconductor refrigerator 92 in the air inlet box 91 to the L-shaped tube 17 through the reversing valve 16. The L-shaped tube 17 conveys the cold air to the bottom of the receiver assembly 1. The cold air can cool the high-temperature filtrate in the receiver assembly 1 and liquefy the gaseous filtrate to prevent the gaseous filtrate from drifting and overflowing during the discharge into the measuring cylinder, thereby ensuring the accuracy of the filtrate measurement. After that, the reversing valve 16 can return to its initial position after the temporary switch 15 is powered off and connected to the delivery pipe 96. This mechanism can effectively improve the loss of filtrate in the test device and the accuracy of the filtrate measurement data, thereby ensuring the accuracy of the high-temperature and high-pressure test data of the drilling fluid.

[0042] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A drilling fluid high temperature and high pressure test device, comprising a receiver assembly (1), a temperature controller (2) and a hollow base (3), characterized in that: The upper surface of the hollow base (3) is fixedly connected to a support column (11), the upper surface of the support column (11) is fixedly connected to a heating shell assembly (5), the inner wall of the heating shell assembly (5) is fixedly connected to a convex inner cylinder (10), the inner wall of the convex inner cylinder (10) is movably connected to a drilling fluid cup assembly (7), the bottom end of the heating shell assembly (5) is provided with a circular through hole that matches the bottom end of the drilling fluid cup assembly (7), the top end of the hollow base (3) is connected to a drilling fluid pretreatment mechanism (8) and a cooling mechanism (9), and the bottom inner wall of the hollow base (3) is fixedly connected to a stabilization mechanism (6); The drilling fluid cup assembly (7) comprises a cup body (71), the bottom end of the cup body (71) is movably connected to a cup cover (72), the top end of the cup cover (72) is connected to a sealing ring (73), the inner wall of the cup cover (72) is fixedly connected to a filter screen plate (74), the upper surface of the filter screen plate (74) is movably connected to a filter paper sheet (75), the bottom end of the cup body (71) is fixedly connected to a plurality of elastic protrusions (76), the outer wall of the cup cover (72) is provided with a card slot (77) that matches the elastic protrusions (76), the inner wall of the bottom end of the heating shell assembly (5) is fixedly connected to a retaining ring (78), and the inner wall of the retaining ring (78) is in contact with the elastic The outer wall of the protrusion (76) is in movable contact, the top end of the cup body (71) is threadedly sealed and connected to a first control valve (79), the top end of the first control valve (79) is fixedly connected to a three-way valve (713), the input end of the three-way valve (713) is fixedly connected to a first pipe joint (710), the outer wall of the cup cover (72) is threadedly sealed and connected to a second control valve (711), the bottom end of the second control valve (711) is fixedly connected to the top end of the receiver component (1), the input end of the receiver component (1) is fixedly connected to a second pipe joint (712), and the movable end of the second pipe joint (712) is fixedly connected to an air supply mechanism (4); The stabilizing mechanism (6) comprises a support tube (61) fixedly connected to the four corners of the lower surface of the hollow base (3); the bottom end of the support tube (61) is fixedly connected to a sealing gasket (62); the inner wall of the support tube (61) is movably connected to a piston (63); the top end of the piston (63) is fixedly connected to a guide rod (64); the top end of the guide rod (64) passes through the inner wall of the hollow base (3) and is fixedly connected to a blocking block (65); the bottom outer wall of the blocking block (65) is movably connected to a sealing support ring (66); the sealing support ring (66) The outer wall of the plurality of gas cylinders (66) is fixedly connected to an air cylinder (67), the bottom end of the air cylinder (67) is fixedly connected to the inner wall of the hollow base (3), the top ends of the plurality of gas cylinders (67) are commonly fixedly sleeved with a partition (68), the side wall of the partition (68) is fixedly connected to the inner wall of the hollow base (3), the bottom end of the blocking block (65) is fixedly connected to a plurality of rubber strips (69), the bottom end of the rubber strips (69) is fixedly connected to the inner wall of the hollow base (3), and the outer walls of the bottom ends of the plurality of gas cylinders (67) are commonly fixedly connected to a connecting piece (610); The gas supply mechanism (4) comprises two pressure regulating valves (41), the opposite ends of the two pressure regulating valves (41) being fixedly connected to a pressure-adjustable gas source valve (42), and the opposite ends of the two pressure regulating valves (41) being fixedly connected to a hose (43), wherein a side end of one of the hoses (43) is fixedly connected to a movable end of a second pipe joint (712), and a side end of the other hose (43) passes through an inner wall of the hollow base (3) and is fixedly connected to an outer wall of the connecting piece (610).

2. A drilling fluid high temperature and high pressure test device according to claim 1, characterized in that: The drilling fluid pretreatment mechanism (8) comprises a fixed plate (81) fixedly connected to the upper surface of the hollow base (3); a rolling bearing (82) is fixedly connected to the outer wall of the fixed plate (81); the inner walls of the inner rings of the two rolling bearings (82) are fixedly connected to a placement tube (83); the inner wall of the placement tube (83) is movably connected to a mixing tube (84); the bottom end of the placement tube (83) is fixedly connected to a rotating rod (85); the bottom end of the rotating rod (85) is connected to the top of the hollow base (3) via a sealing bearing; the bottom end of the rotating rod (85) is fixedly connected to a plurality of fan blades (86); the bottom end of the rotating rod (85) is movably sleeved with a connecting tube (87); the side end of the connecting tube (87) is fixedly embedded in the side wall of the hollow base (3); the side end of the connecting tube (87) is fixedly connected to an air pipe (88); the top end of the air pipe (88) is fixedly connected to the movable end of the first pipe joint (710).

3. A drilling fluid high temperature and high pressure test device according to claim 1, characterized in that: The cooling mechanism (9) comprises an air inlet box (91) fixedly connected to the upper surface of the hollow base (3), a semiconductor refrigerator (92) fixedly connected to the side wall of the air inlet box (91), a cooling mesh block (93) fixedly connected to the cooling side of the semiconductor refrigerator (92), an air pump (94) fixedly connected to the upper surface of the air inlet box (91), a curved pipe (95) fixedly connected to the suction end of the air pump (94) and the upper surface of the air inlet box (91), a delivery pipe (96) fixedly connected to the output end of the air pump (94), a top end of the delivery pipe (96) fixedly connected to the bottom end of the heat-insulating shell, and a touch-pressure switch (97) fixedly connected to the inner wall of the bottom end of the hollow base (3).

4. A drilling fluid high temperature and high pressure test device according to claim 1, characterized in that: A heat dissipation mesh sleeve (12) is fixedly embedded in the outer wall of the cup body (71), and a plurality of heat dissipation through holes (13) are provided on the upper surface of the top end of the cup body (71) located at the heat dissipation mesh sleeve (12).

5. The drilling fluid high temperature and high pressure testing device according to claim 1, characterized in that: A temperature adjustment through hole (14) is provided on the upper surface of the temperature-raising housing component (5).

6. The high temperature and high pressure testing device for drilling fluid according to claim 1, characterized in that: The heating shell assembly (5) comprises a heat-insulating shell (51), a heating sleeve (52), an electric heating tube (53) and a thermometer (54); an outer wall of the heat-insulating shell (51) is provided with a mounting through hole matching the electric heating tube (53) and the thermometer (54).

7. A drilling fluid high temperature and high pressure testing device according to claim 3, characterized in that: The output end of the air pump (94) is fixedly connected to a reversing valve (16), the top end of the reversing valve (16) is fixedly connected to the bottom end of the delivery pipe (96), the side end of the reversing valve (16) is fixedly connected to an L-shaped tube (17), the top end of the L-shaped tube (17) is located at the bottom end of the receiver assembly (1), and the outer wall of the air inlet box (91) is fixedly connected to a temporary switch (15).

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