A drilling fluid pressure-bearing plugging test device

Abstract

This utility model discloses a drilling fluid pressure-bearing plugging test device, belonging to the field of drilling fluid testing technology. Its key technical features include a simulation tank containing a simulated formation tank. A connecting sleeve is located on the top of the simulation tank, and a placement cover is threaded onto the surface of the connecting sleeve. The bottom of the placement cover contacts the top of the simulated formation tank. A pressure and temperature intelligent control component is located inside the simulation tank, and a simulated material dispensing component is located on the top of the simulation tank. The pressure and temperature intelligent control component includes a temperature sensor and a pressure sensor. The side of the temperature sensor and pressure sensor closest to the inner wall of the simulation tank is bolted to the simulation tank. This invention solves the problem that existing experimental devices simulate only a single environment, making it difficult to accurately control the simulated environmental parameters, resulting in significant deviations between the test results and actual downhole conditions, and failing to provide reliable guidance for on-site operations.

Description

Technical Field

[0001] This utility model relates to the field of drilling fluid testing technology, and in particular to a drilling fluid pressure-bearing and leak-sealing testing device. Background Technology

[0002] Well leakage is a common and challenging problem in drilling operations, causing drilling fluid loss, increased costs, and even wellbore instability. Drilling fluid plugging technology has emerged to address this issue, and its significant role is to effectively seal leaking layers, reduce drilling fluid loss, ensure wellbore stability, maintain normal drilling, and reduce non-productive time and costs. It is of great importance to ensuring safe and efficient drilling.

[0003] Existing experimental equipment simulates a single environment, making it difficult to accurately control the parameters of the simulated environment. This results in significant deviations between the test results and actual downhole conditions, failing to provide reliable guidance for field operations.

[0004] To address this, a drilling fluid pressure-bearing plugging test device is proposed. Utility Model Content

[0005] The purpose of this invention is to provide a drilling fluid pressure-bearing plugging test device, which can solve the problem that the existing test devices simulate a single environment, making it difficult to accurately control the simulated environment parameters, resulting in a large deviation between the test results and the actual downhole conditions, and failing to provide reliable guidance for field operations.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a drilling fluid pressure-bearing plugging test device, comprising a simulation tank, a simulation formation tank inside the simulation tank, a connecting sleeve on the top of the simulation tank, a placement cover threadedly connected to the surface of the connecting sleeve, the bottom of the placement cover contacting the top of the simulation formation tank, a pressure and temperature intelligent control component inside the simulation tank, and a simulation material dispensing component on the top of the simulation tank;

[0007] The pressure and temperature intelligent control component includes a temperature sensor and a pressure sensor. The temperature sensor and the pressure sensor are bolted to the simulation barrel on the side near the inner wall of the simulation barrel. A controller is bolted to the top of the simulation barrel. Several heating rings are bolted to the inside of the simulation barrel. A pressurized air intake pipe is fixedly connected to the top of the simulation barrel.

[0008] Preferably, the simulated substance delivery assembly includes a first simulated substance delivery pipe and a second simulated substance delivery pipe, wherein the bottom of the first simulated substance delivery pipe is fixedly connected to the top of the simulated tank.

[0009] Preferably, the bottom of the second simulated material delivery pipe is fixedly connected to the top of the placement cover, and the second simulated material delivery pipe is fixedly connected to the simulated formation bucket through the placement cover.

[0010] Preferably, both the first simulated substance delivery pipe and the second simulated substance delivery pipe are equipped with a first electrically controlled ball valve.

[0011] Preferably, a base plate is bolted to the bottom of the simulated barrel, and a placement rack is bolted to the top left side of the base plate.

[0012] Preferably, a booster pump is bolted to the top of the placement rack, and a booster hose is fixedly connected between the right side of the booster pump and the top of the booster intake pipe. A second electrically controlled ball valve is installed inside the booster hose.

[0013] Preferably, a saline-alkali water delivery pump is bolted to the top of the placement rack, and a simulated substance delivery hose is fixedly connected between the right side of the saline-alkali water delivery pump and the top of the first simulated substance delivery pipe and the second simulated substance delivery pipe, respectively.

[0014] Preferably, the top of the placement cover is fixedly connected to a sealant delivery pipe, and the bottom of the sealant delivery pipe extends to the bottom of the simulated formation bucket.

[0015] Compared with the prior art, the beneficial effects of this utility model are:

[0016] 1. This application, by setting up a pressure and temperature intelligent control component, can accurately control the pressure and temperature parameters inside the simulation tank, providing effective pressure and temperature environment support for the experiment;

[0017] 2. This application, by setting up a simulated material delivery component, can deliver real underground material components such as saline-alkali water. Combined with intelligent control components, it provides a more realistic underground environment for experiments and provides data basis for effective guidance at the work site. Attached Figure Description

[0018] Figure 1 This is an overall structural diagram of the drilling fluid pressure-bearing and leak-sealing test device of this utility model;

[0019] Figure 2 This is a schematic diagram showing the connection between the pressure and temperature intelligent control component of this utility model and the simulation tank;

[0020] Figure 3 This is a schematic diagram showing the connection between the simulated substance dispensing component and the simulated tank of this utility model;

[0021] Figure 4 This is a schematic diagram showing the connection between the saline-alkali water delivery pump and the simulated substance dispensing component of this utility model;

[0022] Figure 5 This is a schematic diagram showing the connection between the lid and the simulated bottom bucket of this utility model.

[0023] In the diagram, 1. Simulation tank; 2. Simulation formation tank; 3. Connecting sleeve; 4. Placement cover; 5. Pressure and temperature intelligent control component; 51. Temperature sensor; 52. Pressure sensor; 53. Controller; 54. Heating ring; 55. Pressurized air inlet pipe; 6. Simulation material delivery component; 61. First simulation material delivery pipe; 62. Second simulation material delivery pipe; 63. First electrically controlled ball valve; 7. Base plate; 8. Placement rack; 9. Pressurized air pump; 10. Pressurized hose; 11. Second electrically controlled ball valve; 12. Salt water delivery pump; 13. Simulation material delivery hose; 14. Leak-sealing agent delivery pipe. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0025] Please see Figure 1-5 The present invention provides the following technical solution:

[0026] A drilling fluid pressure-bearing plugging test device includes a simulation tank 1, a simulation formation tank 2 is set inside the simulation tank 1, a connecting sleeve 3 is set on the top of the simulation tank 1, a placement cover 4 is threadedly connected to the surface of the connecting sleeve 3, the bottom of the placement cover 4 contacts the top of the simulation formation tank 2, a pressure and temperature intelligent control component 5 is set inside the simulation tank 1, and a simulation material dispensing component 6 is set on the top of the simulation tank 1.

[0027] The pressure and temperature intelligent control component 5 includes a temperature sensor 51 and a pressure sensor 52. The temperature sensor 51 and the pressure sensor 52 are bolted to the simulated barrel 1 on the side near the inner wall of the simulated barrel 1. A controller 53 is bolted to the top of the simulated barrel 1. Several heating rings 54 are bolted to the inside of the simulated barrel 1. A pressurized air intake pipe 55 is fixedly connected to the top of the simulated barrel 1.

[0028] In this embodiment: When conducting a drilling fluid pressure plugging test, the simulated formation tank 2 is first placed inside the simulated tank 1. Then, the placement cover 4 is threaded onto the connecting sleeve 3 at the top of the simulated tank 1, ensuring that the bottom of the placement cover 4 is in close contact with the top of the simulated formation tank 2, thus completing the initial assembly of the device. The pressure and temperature intelligent control component 5 then starts working, monitoring and controlling the pressure and temperature inside the simulated tank 1 in real time. The simulated material delivery component 6 delivers simulated materials to the simulated tank 1 and the simulated formation tank 2 according to the test requirements. The temperature sensor 51 and the pressure sensor 52 are bolted to the inner wall of the simulated tank 1, monitoring the temperature and pressure data inside the simulated tank 1 in real time and transmitting this data to the controller 53. The controller 53 controls the heating ring 54 and the booster pump 9 according to the preset parameters and the received data. When the temperature inside the simulated tank 1 is lower than the set value, the controller 53 controls the heating ring 54 to work, increasing the temperature inside the simulated tank 1. When it is necessary to increase the pressure inside the simulated tank 1, gas is introduced through the booster inlet pipe 55 for pressurization.

[0029] Specifically, such as Figure 3 As shown, the simulated substance delivery component 6 includes a first simulated substance delivery pipe 61 and a second simulated substance delivery pipe 62. The bottom of the first simulated substance delivery pipe 61 is fixedly connected to the top of the simulated tank 1.

[0030] Specifically, such as Figure 3 As shown, the bottom of the second simulated material delivery pipe 62 is fixedly connected to the top of the placement cover 4, and the second simulated material delivery pipe 62 is fixedly connected to the simulated stratum bucket 2 through the placement cover 4.

[0031] Specifically, such as Figure 3 As shown, both the first simulated substance delivery pipe 61 and the second simulated substance delivery pipe 62 are equipped with a first electrically controlled ball valve 63.

[0032] In this embodiment: During the experiment, if it is necessary to add simulated substances into the simulation tank 1, the saline-alkali water delivery pump 12 and the first electrically controlled ball valve 63 in the first simulated substance delivery pipe 61 are opened. The saline-alkali water delivery pump 12 delivers the simulated substance (such as saline-alkali water) through the simulated substance delivery hose 13 to the first simulated substance delivery pipe 61, and then enters the simulation tank 1 from the bottom of the first simulated substance delivery pipe 61. If it is necessary to add simulated substances into the simulated formation tank 2, the saline-alkali water delivery pump 12 and the first electrically controlled ball valve 63 in the second simulated substance delivery pipe 62 are opened. The simulated substance enters the second simulated substance delivery pipe 62 through the simulated substance delivery hose 13, and then enters the simulated formation tank 2 through the placement cover 4. At the same time, the two first electrically controlled ball valves 63 are also opened to add simulated substances into the simulation tank 1 and the simulated formation tank 2 respectively. After the addition is completed, the electrically controlled ball valves are closed to form an isolation and prevent deviations in the simulated environment.

[0033] Specifically, such as Figure 1As shown, a base plate 7 is bolted to the bottom of the simulated barrel 1, and a placement rack 8 is bolted to the top left side of the base plate 7.

[0034] In this embodiment: the base plate 7 serves as a supporting component for the entire device, providing stable support for the simulated barrel 1. The placement rack 8 is bolted to the top left side of the base plate 7, providing a suitable mounting platform for other components.

[0035] Specifically, such as Figure 1 , Figure 4 As shown, a booster air pump 9 is bolted to the top of the placement rack 8. A booster hose 10 is fixedly connected between the right side of the booster air pump 9 and the top of the booster air intake pipe 55. A second electrically controlled ball valve 11 is installed inside the booster hose 10.

[0036] Specifically, such as Figure 4 As shown, a saline-alkali water delivery pump 12 is bolted to the top of the placement rack 8, and a simulated substance delivery hose 13 is fixedly connected between the right side of the saline-alkali water delivery pump 12 and the top of the first simulated substance delivery pipe 61 and the second simulated substance delivery pipe 62.

[0037] In this embodiment: when it is necessary to increase the pressure inside the simulation tank 1, the booster pump 9 is started and the second electrically controlled ball valve 11 inside the booster hose 10 is opened. The booster pump 9 delivers gas through the booster hose 10 to the booster air inlet pipe 55 at the top of the simulation tank 1, thereby increasing the pressure inside the simulation tank 1. The pressure can be monitored by the pressure sensor 52 in the pressure and temperature intelligent control component 5 and adjusted by the controller 53. When the simulated substance is added, the saline-alkali water delivery pump 12 delivers the simulated substance to the simulated substance delivery component 6. The saline-alkali water delivery pump 12 is connected to the first simulated substance delivery pipe 61 and the second simulated substance delivery pipe 62 through the simulated substance delivery hose 13, so as to realize the function of delivering simulated substances to the simulation tank 1 and the simulated stratum tank 2.

[0038] Specifically, such as Figure 5 As shown, the top of the cover 4 is fixedly connected to a sealant delivery pipe 14, and the bottom of the sealant delivery pipe 14 extends to the bottom of the simulated formation bucket 2.

[0039] In this embodiment: When conducting a leak sealing test, the leak sealing agent is injected into the simulated formation tank 2 through the leak sealing agent delivery pipe 14 at the top of the cover 4. The bottom of the leak sealing agent delivery pipe 14 extends to the bottom of the simulated formation tank 2 to ensure that the leak sealing agent can accurately reach the location where leak sealing is required. During the injection process, the injection speed and injection volume of the leak sealing agent can be controlled according to the test requirements.

[0040] Working principle: First, place the simulated formation bucket 2 inside the simulated bucket 1. Connect the placement cover 4 to the top connecting sleeve 3 of the simulated bucket 1 via threads, ensuring tight contact between the tops of the two to complete the initial assembly of the device. During operation, the temperature sensor 51 and pressure sensor 52 of the pressure and temperature intelligent control component 5 are bolted to the inner wall of the simulated bucket 1, monitoring the temperature and pressure data inside the simulated bucket 1 in real time and transmitting them to the controller 53. The controller 53 controls the heating ring 54 and the booster pump 9 according to preset parameters and received data. When the temperature is lower than the set value, the heating ring 54 is controlled to work and raise the temperature. When pressurization is required, the booster pump 9 is started and the second electrically controlled ball valve 11 in the booster hose 10 is opened. Gas enters the simulated bucket 1 through the booster hose 10 from the booster inlet pipe 55. The pressure is monitored by the pressure sensor 52 and adjusted by the controller 53. The simulated substance delivery component 6 delivers simulated substances according to the experimental requirements. If delivery is to the simulated bucket 1, the saline-alkali water delivery pump 12 and the first electrically controlled ball valve 63 in the first simulated substance delivery pipe 61 are opened, and the simulated substance is delivered through the simulated substance delivery pipe 61. The delivery hose 13 enters the simulation tank 1 from the bottom of the first simulated substance delivery pipe 61. If it is to be added to the simulated formation tank 2, the saline-alkali water delivery pump 12 and the first electrically controlled ball valve 63 in the second simulated substance delivery pipe 62 are opened. The simulated substance enters the simulated formation tank 2 through the placement cover 4 via the simulated substance delivery hose 13. Alternatively, the two first electrically controlled ball valves 63 can be opened simultaneously for separate addition. After addition, the electrically controlled ball valves are closed to isolate and prevent environmental deviation. When installing the device, first place the base plate 7, which serves as a support component, stably on the test site, then bolt the simulation tank 1 to the base plate 7. Next, install the placement frame 8 on the left side of the base plate 7. Finally, install the booster pump 9 and the saline-alkali water delivery pump 12 on the placement frame 8. The saline-alkali water delivery pump 12 is connected to the first and second simulated substance delivery pipes 62 through the simulated substance delivery hose 13 to achieve the delivery function. When conducting a leak-sealing test, the leak-sealing agent is injected into the simulated formation tank 2 through the leak-sealing agent delivery pipe 14 at the top of the placement cover 4. Its bottom extends to the bottom of the simulated formation tank 2. The injection speed and injection volume can be controlled as needed.

[0041] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A device for testing the pressure containment of a drilling fluid, comprising a simulated barrel (1), characterised in that: The simulation tank (1) is equipped with a simulation formation tank (2) inside. The top of the simulation tank (1) is equipped with a connecting sleeve (3). The surface of the connecting sleeve (3) is threaded with a placement cover (4). The bottom of the placement cover (4) is in contact with the top of the simulation formation tank (2). The simulation tank (1) is equipped with a pressure and temperature intelligent control component (5) inside. The top of the simulation tank (1) is equipped with a simulation material delivery component (6). The pressure and temperature intelligent control component (5) includes a temperature sensor (51) and a pressure sensor (52). The temperature sensor (51) and the pressure sensor (52) are bolted to the simulation barrel (1) on the side near the inner wall of the simulation barrel (1). A controller (53) is bolted to the top of the simulation barrel (1). Several heating rings (54) are bolted to the inside of the simulation barrel (1). A pressurized air intake pipe (55) is fixedly connected to the top of the simulation barrel (1).

2. The drilling fluid pressure-bearing plugging test device according to claim 1, characterized in that: The simulated substance delivery component (6) includes a first simulated substance delivery pipe (61) and a second simulated substance delivery pipe (62), with the bottom of the first simulated substance delivery pipe (61) fixedly connected to the top of the simulated tank (1).

3. The drilling fluid pressure-bearing plugging test device according to claim 2, characterized in that: The bottom of the second simulated material delivery pipe (62) is fixedly connected to the top of the placement cover (4), and the second simulated material delivery pipe (62) is fixedly connected to the simulated stratum bucket (2) through the placement cover (4).

4. The drilling fluid pressure-bearing plugging test device according to claim 2, characterized in that: Both the first simulated substance delivery pipe (61) and the second simulated substance delivery pipe (62) are equipped with a first electrically controlled ball valve (63).

5. The drilling fluid pressure-bearing plugging test device according to claim 2, characterized in that: The bottom of the simulated barrel (1) is bolted with a base plate (7), and a placement rack (8) is bolted to the left side of the top of the base plate (7).

6. The drilling fluid pressure-bearing plugging test device according to claim 5, characterized in that: A booster pump (9) is bolted to the top of the placement rack (8). A booster hose (10) is fixedly connected between the right side of the booster pump (9) and the top of the booster inlet pipe (55). A second electrically controlled ball valve (11) is installed inside the booster hose (10).

7. The drilling fluid pressure-bearing plugging test device according to claim 5, characterized in that: A saline-alkali water delivery pump (12) is bolted to the top of the placement rack (8). The right side of the saline-alkali water delivery pump (12) is fixedly connected to the top of the first simulated substance delivery pipe (61) and the second simulated substance delivery pipe (62) by a simulated substance delivery hose (13).

8. The drilling fluid pressure-bearing plugging test device according to claim 1, characterized in that: The top of the placement cover (4) is fixedly connected to a plugging agent delivery pipe (14), and the bottom of the plugging agent delivery pipe (14) extends to the bottom of the simulated formation bucket (2).

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