An anti-sand settling elevated trough device

Abstract

This invention provides an anti-sanding elevated trough device, comprising an elevated trough, which includes a diversion section and a collection section. The diversion section includes a diversion wall sloping downwards from left to right. The collection section is located at the right end of the diversion section and extends downwards, with an outlet at the bottom of the collection section and a valve installed at the outlet. A controller is connected to the valve; a sensor mounting bracket is installed on the elevated trough and above the collection section; and a liquid volume detection device is used to detect the amount of drilling fluid collected in the collection section. This anti-sanding elevated trough device can store a certain amount of drilling fluid through the collection section, and through the valve, controller, and liquid volume detection device, maintain the amount of drilling fluid collected within a set range. This facilitates sensor detection, ensures normal drilling fluid delivery, and completely removes sand from the collection section, preventing inaccurate sensor detection due to excessive sand. Furthermore, it eliminates the need for regular manual cleaning, simplifying the use of the elevated trough.

Description

Technical Field

[0001] This invention relates to the field of oil drilling technology, and specifically to an anti-sand-settling elevated trough device. Background Technology

[0002] As one of the devices in the drilling fluid (or mud) transportation process, the overhead pipe plays an important role in the transportation of drilling fluid. For example, the Chinese utility model patent with authorization announcement number CN212614595U discloses an automated drilling fluid solid phase control system. In the automated drilling fluid solid phase control system, the overhead pipe (i.e., the overhead channel) is connected between the wellhead and the vibrating screen and is used to transport the drilling fluid in the wellhead to the vibrating screen to remove rock cuttings and other harmful solid particles in the drilling fluid.

[0003] Existing overhead drilling troughs are typically fixed to mounting brackets. The troughs are generally U-shaped, slightly inclined downwards from left to right to facilitate the flow of drilling fluid from left to right. Sensors are installed on the trough to monitor the flow rate, density, and temperature of the drilling fluid. The sensor probes need to extend below the fluid surface. However, because the troughs are flat-bottomed and the drilling fluid is constantly flowing, when the flow rate is insufficient, the fluid level inside the trough is relatively low, making it difficult for the sensor probes to extend below the surface and thus impossible to perform detection. To address this, existing technology involves creating a submerged section at the bottom of the trough to store a certain depth of drilling fluid. The sensor probes are then aligned with this submerged section and extended below the fluid surface for detection.

[0004] However, after a period of use, the drilling fluid in the aforementioned elevated troughs accumulates more and more cuttings, forming sediment. This sediment covers the sensor probes, causing inaccurate sensor readings. Therefore, regular manual cleaning is required, which is very inconvenient. Summary of the Invention

[0005] The purpose of this invention is to provide an anti-sand-settling elevated trough device to solve the problem that existing elevated troughs, which use sedimentation tanks in conjunction with sensors for detection, cause the sediment accumulated in the sedimentation tank to cover the sensor probe, resulting in inaccurate sensor detection results and requiring regular manual cleaning of the sediment.

[0006] To achieve the above objectives, the anti-sand-sedimentation elevated trough device of the present invention adopts the following technical solution:

[0007] This invention provides a device for preventing sedimentation in elevated troughs, comprising:

[0008] The elevated tank includes a diversion section and a collection section. The diversion section includes a diversion wall that gradually slopes downward from left to right. An inlet is provided at the left end of the diversion section. The collection section is located at the right end of the diversion section and extends downward. An outlet is provided at the bottom of the collection section, and a valve is installed at the outlet.

[0009] A controller, connected to the valve control, is used to control the valve opening degree;

[0010] The sensor mounting bracket is installed on the elevated tank and above the liquid collection section. The sensor mounting bracket is used to install sensors whose probes need to extend below the liquid surface.

[0011] The fluid level detection device is used to detect the amount of drilling fluid collected in the fluid collection section and transmit the detection signal to the controller. The controller controls the opening of the valve to maintain the amount of drilling fluid collected in the fluid collection section within the set range.

[0012] The beneficial effects of the above technical solution are as follows: By setting a downward-extending liquid collection section at the right end of the diversion section, and installing a valve at the outlet at the bottom of the liquid collection section, the opening degree of the valve is controlled by the controller to ensure that drilling fluid can flow into and out of the elevated tank, while also ensuring that the drilling fluid can accumulate to a certain amount within the liquid collection section; since the sensor mounting bracket is installed above the liquid collection section, it is convenient for the sensor probe to penetrate below the liquid surface for detection, realizing the basic detection function of the elevated tank; the liquid volume detection device can detect the amount of drilling fluid accumulated in the liquid collection section and transmit the detection signal to the controller. The controller controls the opening degree of the valve to maintain the amount of drilling fluid accumulated in the liquid collection section within the set range, which on the one hand facilitates sensor detection, and on the other hand avoids excessive drilling fluid accumulation that would affect the delivery of drilling fluid.

[0013] After a period of use, the anti-sand-sedimentation elevated trough device of the present invention can be directly controlled by adjusting the valve to the maximum opening to completely discharge the sediment in the liquid collection section, preventing excessive accumulation of sediment and avoiding inaccurate sensor detection due to excessive sediment. It also eliminates the need for regular manual cleaning, making the use of the elevated trough more convenient.

[0014] Furthermore, the anti-sand-sedimentation elevated trough device includes a frame, on which the elevated trough is rotatably mounted. The anti-sand-sedimentation elevated trough device also includes a telescopic mechanism, which is connected between the frame and the diversion section or between the frame and the collection section to adjust the inclination of the diversion section.

[0015] The beneficial effects of the above technical solution are as follows: when installing the elevated trench, the inclination of the diversion section can be adjusted by the telescopic mechanism to match the pipeline at the wellhead, which facilitates the installation of the elevated trench. At the same time, it can also maintain a certain flow rate of drilling fluid in the elevated trench.

[0016] Furthermore, the telescopic mechanism is connected between the frame and the left end of the drainage section.

[0017] The beneficial effects of the above technical solution are as follows: by installing the telescopic mechanism between the frame and the left end of the drainage section, the distance between the telescopic mechanism and the rotating shaft is longer. According to the lever principle, the telescopic mechanism can more easily adjust the tilt of the drainage section.

[0018] Furthermore, the liquid collection section has a conical structure that is larger at the top and smaller at the bottom.

[0019] The beneficial effects of the above technical solution are: it is easier to collect a certain amount of drilling fluid in the fluid collection section, and at the same time, it is easier to discharge the drilling fluid and sand in the fluid collection section, so that sand will not accumulate at the bottom of the fluid collection section due to incomplete discharge of sand.

[0020] Furthermore, the liquid volume detection device is a pressure sensor.

[0021] The beneficial effects of the above technical solution are as follows: it can convert the information on the amount of liquid collected in the collection section into an electrical signal and transmit it to the controller to control the opening of the valve. As the liquid level increases, the detected pressure also increases, which in turn controls the valve opening to be larger and the drilling fluid discharge to be larger. This maintains the stability of the liquid level in the collection section and prevents the liquid level in the collection section from being too high, which would affect the delivery of drilling fluid in the overhead trench. At the same time, the control of the valve opening is also more precise.

[0022] Furthermore, a first mounting bracket for installing a pool volume sensor and a second mounting bracket for installing an H2S sensor are fixed on the side wall of the drainage section.

[0023] The beneficial effects of the above technical solution are as follows: a pool volume sensor can be installed through the first fixed frame, and the liquid level height in the elevated tank can be detected by the pool volume sensor to achieve the purpose of detecting the drilling fluid flow rate; an H2S sensor can be installed through the second fixed frame, which facilitates the detection of the H2S concentration in the drilling fluid.

[0024] Furthermore, a degassing device mounting bracket for installing the degassing device is fixed at the top of the drainage section.

[0025] The beneficial effect of the above technical solution is that a degasser can be installed through the degasser mounting bracket, so as to separate gases such as H2S in the drilling fluid from the drilling fluid.

[0026] Furthermore, a flexible tube is connected to the liquid outlet.

[0027] The beneficial effects of the above technical solution are: the design of the hose facilitates the discharge of drilling fluid from the collection section, and at the same time, it reduces manufacturing costs.

[0028] Furthermore, the valve is a valve plate, and the anti-sand-settling elevated trough device also includes a direct-acting power mechanism that is connected to the valve plate to drive the valve plate to move linearly. The direct-acting power mechanism is connected to the controller.

[0029] The beneficial effects of the above technical solution are: by controlling the opening and closing of the valve plate through a direct-acting power mechanism, it is easier to control the valve opening degree and realize the control of the valve opening degree.

[0030] Furthermore, the valve is an electrically adjustable valve.

[0031] The beneficial effects of the above technical solution are as follows: setting the valve as an electric regulating valve facilitates the control of the valve opening and makes the control of the valve opening more precise. At the same time, the electric regulating valve is an integral unit, which also facilitates the installation of the valve. Attached Figure Description

[0032] Figure 1 This is a side view of Embodiment 1 of the anti-sand settling elevated trough device of the present invention;

[0033] Figure 2 This is a top view of Embodiment 1 of the anti-sand-sedimentation elevated trough device of the present invention;

[0034] Figure 3 This is a side view of Embodiment 2 of the anti-sand-sedimentation elevated trough device of the present invention;

[0035] In the diagram: 1. Drainage section; 2. Collection section; 3. Drainage wall; 4. Inlet; 5. Valve plate; 6. Electric regulating valve; 7. Direct-acting power mechanism; 8. Connecting line; 9. Controller; 10. Sensor mounting bracket; 11. Pressure sensor; 12. Frame; 13. Rotating shaft; 14. Telescopic mechanism; 15. First fixed bracket; 16. Second fixed bracket; 17. Degasser mounting bracket; 18. Hoses; 19. Side wall. Detailed Implementation

[0036] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only for explaining the invention and are not intended to limit the invention; that is, the described embodiments are merely some embodiments of the invention, and not all embodiments. The components of the embodiments of the invention described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0037] Therefore, the following detailed description of the embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the invention without inventive effort are within the scope of protection of the invention.

[0038] It should be noted that relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0039] The features and performance of the present invention will be further described in detail below with reference to embodiments.

[0040] Embodiment 1 of the anti-sand-sedimentation elevated trough device of the present invention is as follows Figure 1 As shown, the anti-sand-sedimentation elevated trough device includes an elevated trough connected to the wellhead (not shown in the figure) for conveying drilling fluid in the wellhead. The elevated trough includes a diversion section 1 and a collection section 2.

[0041] like Figure 2 As shown, the drainage section 1 of the elevated channel includes a drainage wall 3 at the bottom. The drainage wall 3 is inclined downwards from left to right due to the overall tilting of the drainage section 1. The drainage wall 3 is used to transport drilling fluid from left to right, and an inlet 4 for drilling fluid inflow is provided at the left end of the drainage wall 3. A first mounting bracket 15 for installing a pool volume sensor is fixed on the side wall 19 of the drainage section 1. The pool volume sensor detects the liquid level in the elevated channel to detect the drilling fluid flow rate. At the same time, a second mounting bracket 16 for installing an H2S sensor is also fixed on the side wall 19 of the drainage section 1. The H2S sensor detects the H2S concentration in the drilling fluid. In addition, a degasser mounting bracket 17 is installed at the top of the middle section of the diversion section 1, and the degasser mounting bracket 17 is located downstream of the first fixed bracket 15 and the second fixed bracket 16. The degasser mounting bracket 17 is used for the installation of the degasser and separates H2S from the drilling fluid through the degasser to achieve the purpose of purifying the drilling fluid.

[0042] like Figure 1 As shown, the collecting section 2 of the elevated channel is located at the right end of the diversion section 1 and extends downwards. To facilitate the discharge of drilling fluid from the collecting section 2, an outlet for the drilling fluid is provided at the bottom of the collecting section 2, and the collecting section 2 is designed as a conical structure, wider at the top and narrower at the bottom. Simultaneously, to monitor the temperature, density, and conductivity of the drilling fluid within the collecting section, such as... Figure 1 and Figure 2As shown, a sensor mounting bracket 10 is installed on the elevated trough above the collection section 2 for mounting temperature, density, and conductivity sensors. Since the sensor probes need to extend below the liquid surface to ensure the accuracy of the sensor detection results, the amount of drilling fluid collected in the collection section 2 needs to be maintained within a set range. Therefore, a fluid volume detection device is installed at the right end of the diversion section 1 to detect the amount of drilling fluid collected in the collection section 2. In this embodiment, the fluid volume detection device is a pressure sensor 11. The pressure sensor 11 transmits the amount of drilling fluid collected as an electrical signal, and the pressure sensor 11 is connected to a controller 9 via a connecting line 8. The emitted pressure electrical signal is transmitted to the controller 9 via the connecting line 8, and the controller 9 can control the opening degree of the valve installed at the outlet.

[0043] Specifically, in this embodiment, the valve is a valve plate 5, and the valve plate 5 is connected to a direct-acting power mechanism 7. In this embodiment, the direct-acting power mechanism 7 is an electric actuator. Therefore, the controller 9 controls the valve opening by controlling the linear movement of the electric actuator, thereby discharging the drilling fluid in the collection section 2. When the amount of drilling fluid collected is larger, the pressure sensor 11 is immersed in the liquid, and the detected pressure is also larger. At the same time, the controller 9 controls the valve to open wider, so that the amount of drilling fluid collected in the collection section 2 is maintained within the set range, ensuring the accuracy of the sensor detection results. In addition, by controlling the valve, the sediment formed by the accumulation of rock cuttings in the drilling fluid can also be discharged from the collection section, eliminating the need for regular manual cleaning. This facilitates the use of the overhead trough and avoids the sensor probe being covered by the accumulation of sediment, which would lead to inaccurate sensor detection results. At the same time, it can also prevent the drilling fluid transport in the overhead trough from being affected by the excessive amount of drilling fluid collected in the collection section 2.

[0044] like Figure 1 As shown, the drilling fluid and its sediment discharged from the collection section 2 are sent into the vibrating screen (not shown in the figure) through the hose 18 connected to the outlet.

[0045] In addition, such as Figure 1 As shown, the anti-sand-sedimentation elevated trough device also includes a frame 12, and the elevated trough is rotatably mounted on the frame 12 via a rotating shaft 13. At the same time, a telescopic mechanism 14 is also provided between the frame 12 and the left end of the diversion section 1. Through the cooperation of the telescopic mechanism 14 and the rotating shaft 13, the inclination of the diversion section 1 is adjusted so that the fluid inlet is matched with the pipeline at the wellhead, which facilitates the installation of the elevated trough. At the same time, it can also maintain a certain flow rate of drilling fluid in the elevated trough.

[0046] The anti-sand-sedimentation elevated trough device of this invention, by installing a valve at the outlet and transmitting the amount of drilling fluid collected in the collection section to the controller in the form of an electrical signal via a pressure sensor and a controller, controls the opening of the valve to maintain the amount of drilling fluid collected in the collection section within a set range. This facilitates sensor detection and prevents the delivery of drilling fluid from being affected by excessive accumulation. Furthermore, after a period of use, the anti-sand-sedimentation elevated trough device of this invention can be directly adjusted to its maximum opening to completely drain the sand in the collection section, preventing excessive sand accumulation and avoiding inaccurate sensor detection due to excessive sand. It also eliminates the need for regular manual cleaning, simplifying the use of the elevated trough.

[0047] Embodiment 2 of the anti-sand-sedimentation elevated trough device of the present invention is as follows: Figure 3 As shown, unlike Embodiment 1, the valve in Embodiment 2 is an electric regulating valve 6, and the controller 9 is fixed on the electric regulating valve 6. Using the electric regulating valve 6 can achieve more precise control of the valve opening.

[0048] In other embodiments of the anti-sand-sedimentation elevated trough device, the valve may also be a pneumatic regulating valve.

[0049] In other embodiments of the anti-sand-sedimentation elevated trough device, the direct-acting power mechanism can also be a hydraulic push rod or a pneumatic push rod.

[0050] In other embodiments of the anti-sand-sedimentation elevated trough device, a hose is not connected to the outlet; instead, the drilling fluid is discharged directly from the outlet onto the vibrating screen.

[0051] In other embodiments of the anti-sand-sedimentation elevated trough device, the anti-sand-sedimentation elevated trough device may not include a degasser mounting bracket, but instead the degasser is mounted on a separately set bracket, or no degasser is set.

[0052] In other embodiments of the anti-sand-sedimentation elevated trough device, the first and second fixed frames may not be provided; instead, only one fixed frame may be provided, and the pool volume sensor and H2S sensor may be installed on the same fixed frame. Alternatively, the pool volume sensor and H2S sensor may be directly installed on the side wall of the diversion section.

[0053] In other embodiments of the anti-sanding elevated trough device, the liquid volume detection device may not be a pressure sensor, but a liquid level sensor. The liquid level sensor is set above the liquid collection section, and the amount of drilling fluid collected is known by detecting the height of the drilling fluid level in the liquid collection section, thereby controlling the opening degree of the valve.

[0054] In other embodiments of the anti-sand-sedimentation elevated trough device, the liquid collection section can also be a cylindrical structure with a conical bottom, or a tetrahedral structure with a funnel-shaped bottom, or the liquid collection section can simply be a cylindrical structure.

[0055] In other embodiments of the anti-sand-sedimentation elevated trough device, the telescopic mechanism may not be connected between the left end of the frame and the diversion section, but rather between the left side of the frame and the collection section.

[0056] In other embodiments of the anti-sand-sedimentation elevated trough device, the anti-sand-sedimentation elevated trough device does not include a telescopic mechanism, and the elevated trough is directly fixedly installed on the frame. In this case, the inclination of the diversion section is not adjustable.

[0057] In other embodiments of the anti-sand-sedimentation elevated trough device, the anti-sand-sedimentation elevated trough device may not include a frame, that is, the elevated trough is directly fixedly installed at the wellhead.

[0058] In other embodiments of the anti-sand-sedimentation elevated trough device, the diversion section can be set horizontally as a whole, while the diversion wall of the diversion section can be processed to gradually slope downward from left to right.

[0059] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. The scope of patent protection of the present invention shall be determined by the claims. Similarly, any equivalent structural changes made based on the description and drawings of the present invention shall also be included within the scope of protection of the present invention.

Claims

1. A device for preventing sand settling in an elevated trough, characterized in that, include: The elevated tank includes a diversion section (1) and a collection section (2). The diversion section (1) includes a diversion wall (3) that slopes downward from left to right. An inlet (4) is provided at the left end of the diversion section (1). The collection section (2) is located at the right end of the diversion section (1) and extends downward. An outlet is provided at the bottom of the collection section (2), and a valve is installed at the outlet. The controller (9) is connected to the valve control and is used to control the opening degree of the valve; The sensor mounting bracket (10) is installed on the elevated trough and located above the liquid collection section (2). The sensor mounting bracket (10) is used to install sensors whose probes need to extend below the liquid surface. The fluid volume detection device is used to detect the amount of drilling fluid in the fluid collection section (2) and transmit the detection signal to the controller (9). The controller (9) controls the opening of the valve to keep the amount of drilling fluid in the fluid collection section (2) within the set range.

2. The anti-sand-settlement elevated trough device according to claim 1, characterized in that, The anti-sand-settling elevated trough device includes a frame (12), the elevated trough is rotatably mounted on the frame (12), the anti-sand-settling elevated trough device also includes a telescopic mechanism (14), the telescopic mechanism (14) is connected between the frame (12) and the diversion section (1) or between the frame (12) and the liquid collection section (2) to adjust the inclination of the diversion section (1).

3. The anti-sand-settlement elevated trough device according to claim 2, characterized in that, The telescopic mechanism (14) is connected between the frame (12) and the left end of the drainage section (1).

4. The anti-sand-settlement elevated trough device according to any one of claims 1 to 3, characterized in that, The liquid collection section (2) has a cone-shaped structure that is larger at the top and smaller at the bottom.

5. The anti-sand settling elevated trough device according to any one of claims 1 to 3, characterized in that, The liquid volume detection device is a pressure sensor (11).

6. The anti-sand settling elevated trough device according to any one of claims 1 to 3, characterized in that, The side wall (19) of the drainage section (1) is fixed with a first fixing bracket (15) for installing a pool volume sensor and a second fixing bracket (16) for installing an H2S sensor.

7. The anti-sand settling elevated trough device according to any one of claims 1 to 3, characterized in that, The top of the drainage section (1) is fixed with a degasser mounting bracket (17) for installing the degasser.

8. The anti-sand settling elevated trough device according to any one of claims 1 to 3, characterized in that, A flexible tube (18) is connected to the liquid outlet.

9. The anti-sand settling elevated trough device according to any one of claims 1 to 3, characterized in that, The valve is a valve plate (5). The anti-sand-settling elevated trough device also includes a direct-drive power mechanism (7) that is connected to the valve plate (5) to drive the valve plate (5) to move linearly. The direct-drive power mechanism (7) is connected to the controller (9).

10. The anti-sand-settlement elevated trough device according to any one of claims 1 to 3, characterized in that, The valve is an electric regulating valve (6).

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