Oil-based drilling fluid cuttings cleaning device

Abstract

The present invention relates to the field of drill cuttings cleaning in geological logging, and in particular to a convenient, flexible and efficient oil-attached solid phase particle cleaning device. It comprises a base, a water tank, a cone barrel, a screen, and a support hoop; the cone barrel is open at both ends, and is invertedly mounted on the base through a support rod, and the water tank is placed under the cone barrel; a support hoop is provided at the waist of the cone barrel, a screen is provided above the support hoop, and an elastic support member is provided between the screen and the support hoop; the outer edge of the screen is in clearance with the inner wall of the cone barrel. It can realize efficient drill cuttings cleaning operations under oil-based drilling fluid conditions, liberate labor, save labor costs, and ensure the efficiency of oil-based drilling fluid drill cuttings cleaning. The device is safe and reliable, has a scientific principle, is highly advanced, is easy to use, and reduces labor intensity.

Description

Technical Field

[0001] The present invention relates to the field of drilling cuttings cleaning in geological logging, and in particular to a convenient, flexible and efficient cleaning device for oil-attached solid-phase particles. Background Art

[0002] For a long time, sand washing in geological logging has been a simple yet arduous labor. Sand bailers place a sand collection basin downstream of the drilling fluid vibrating screen. Drill cuttings fall from the vibrating screen into the basin. After a predetermined delay, the bailers carry the collected sand to a large water tank, rinse it with water, and repeatedly stir it with a stirring rod. If the water becomes dirty, the bailers pour it out and then add clean water to rinse it. This process is repeated until the cuttings are clean and ready for the next step. Some drill cuttings are easy to clean, requiring only a few washes to meet requirements. Others are extremely difficult to clean, requiring even ten or twenty washes. The entire cleaning process requires tremendous physical effort, regardless of weather. Cuttings generated by drilling with oil-based drilling fluid are more difficult to clean than those generated by water-based drilling fluid. This is because oil-based drilling fluid has oil stains attached to the surface of the cuttings. When used in agitation cleaning, the oil stains will repeatedly adhere to the surface of the cuttings, increasing the difficulty of cleaning, wasting water resources, and reducing cleaning efficiency. Therefore, cleaning of cuttings with oil-based drilling fluid highlights various unfavorable factors. In summary, there are the following problems:

[0003] ① Occupy labor force and increase labor costs;

[0004] ② The operation risk is high and the cross-operation safety is low;

[0005] ③ Low work efficiency and poor drilling cuttings cleaning effect;

[0006] ④ High labor intensity, which is not conducive to occupational health protection;

[0007] ⑤ Sand washing wastewater is difficult to centrally treat and cannot be recycled, polluting the environment;

[0008] ⑥ The poor continuity of sand washing operations is not conducive to protecting the benefits of oil and gas exploration;

[0009] ⑦ The automation of drill cuttings cleaning operations cannot be achieved, and cannot meet scientific and standardized requirements.

[0010] Therefore, there is an urgent need for an efficient washing operation device for cleaning oil-based drilling fluid cuttings. Summary of the Invention

[0011] The present invention aims to overcome the shortcomings of the prior art by providing an oil-based drilling fluid cuttings cleaning device. This device can achieve efficient cuttings cleaning operations using oil-based drilling fluids during on-site operations and daily use, freeing up labor, saving labor costs, and ensuring efficient cleaning of oil-based drilling fluid cuttings. The device is safe and reliable, based on a scientific principle, is highly advanced, easy to use, and reduces labor intensity.

[0012] The technical solution is as follows:

[0013] An oil-based drilling fluid cuttings cleaning device comprises a base, a water tank, a conical barrel, a screen, and a support hoop; the conical barrel is open at both ends and is invertedly mounted on the base via a support rod, and the water tank is placed below the conical barrel; a support hoop is provided at the waist of the conical barrel, a screen is provided above the support hoop, and an elastic support member is provided between the screen and the support hoop; the outer edge of the screen is gap-fitted with the inner wall of the conical barrel.

[0014] Furthermore, the device includes a tumbler, a crank handle, and a water vapor tee. The tumbler is positioned at the upper edge of the conical barrel. One end of the crank handle is connected to the upper end of the tumbler, and the other end extends above the conical barrel. The end of the crank handle extending above the conical barrel is connected to the water vapor tee. The water vapor tee is connected to the end of the crank handle extending above the conical barrel via a tension spring. The water vapor tee is equipped with a nozzle, a water inlet pipe, and an air inlet pipe, which are connected to the nozzle. An elastic support member is provided between the upper end of the support rod and the conical barrel.

[0015] Furthermore, it also includes a rim and a handle seat; the rim is an extended step fixed to the edge of the upper opening of the conical barrel; the handle seat is fixed to the upper end face of the rim; the lower end of the handle and the handle seat are respectively provided with internal and external threads that cooperate with each other; the handle is threadedly connected to the handle seat. The water tank is provided with a conical barrel inlet, an oil-water inlet, a clean water inlet, and a sewage outlet, wherein the oil-water inlet, the clean water inlet, and the sewage outlet are provided on the side wall of the water tank, and the sewage outlet is close to the bottom of the water tank, and from the sewage outlet upward, they are the clean water inlet and the oil-water inlet in sequence; the conical barrel inlet is the upper opening of the water tank, and the lower opening of the conical barrel extends to the inside of the conical barrel inlet. The lower end of the support rod is provided with a fixed disk; the fixed disk is a circular disk, and a plurality of fixed disk fixing holes are provided circumferentially, and is fixed to the base by screws. The base is a square plate, and the four corners of the square plate are provided with base fixing holes. The edge of the screen is provided with a handle.

[0016] The beneficial effects of the present invention are:

[0017] ① It liberates the labor force in production operations and reduces labor costs;

[0018] ② Eliminates manual operation risks and does not affect cross-operation safety;

[0019] ③ High cleaning efficiency and good cleaning effect of drill cuttings;

[0020] ④ Reduces labor intensity and is beneficial to the occupational health protection of employees;

[0021] ⑤ Sand washing wastewater is centrally treated and can be recycled and reused, protecting the construction environment and saving water resources;

[0022] ⑥ The high continuity of sand washing operation is conducive to improving the efficiency of oil and gas exploration and the level of standardized on-site operations;

[0023] ⑦ The automation of drill cuttings cleaning operations has been achieved, meeting the requirements of scientific and standardized production. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0025] Figure 2 It is a schematic structural diagram of the water tank of the present invention;

[0026] Figure 3 It is a schematic diagram of the support rod structure of the present invention;

[0027] In the figure: 1. Base 2. Base fixing holes 3. Fixing plate 4. Fixing holes for fixing plate 5. Bottom sleeve 6. Strut 7. Top sleeve 8. Compression spring 9. Cone 10. Support hoop 11. Screen 12. Handle 13. Vibration spring support 14. Rim 15. Twist seat 16. Twist 17. Twist thread 18. Twist cover 19. Crank handle 20. Crank cover 21. Tension spring 22. Sprinkler 23. Water and gas tee 24. Water tank 25. Cone inlet 26. Oil and water inlet 27. Clean water inlet 28. Drain port 29. Clean sewage port 30. Strut compression spring block 31. Top sleeve compression spring block 32. Water tank handle. DETAILED DESCRIPTION

[0028] The technical solution of the present invention is further described in detail below with reference to the embodiments.

[0029] See also Figure 1-3 The oil-based drilling fluid cuttings cleaning device is made of high-quality stainless steel as a whole, and is mainly composed of a base 1, a support rod 6, a cone barrel 9, a handle seat 15, a nozzle, a water tank 24, etc.

[0030] The base 1, used to support the structure, is a plate with a flat support surface. Its shape is not limited, but it is preferably square, 600mm long, 600mm wide, and 5mm thick. Four 20mm diameter base fixing holes 2 are located at the four corners of the base 1 for securing the base 1 to external structures or equipment. ① Fixing plate 3. This is a riser fixing base, preferably a circular plate with a diameter of 100mm and a thickness of 5mm. Four fixing holes 4 are evenly distributed around the plate's perimeter. These holes mate with corresponding holes on the base 1 and are secured to the base 1 with screws. ② Bottom sleeve 5. Bottom sleeve 5 is a steel pipe with a height of 100mm, an outer diameter of 50mm, and a wall thickness of 5mm. Bottom sleeve 5 is welded to the center of the fixing plate 3, and a support rod 6 is inserted into the bottom sleeve 5. Preferably, matching internal and external threads can be provided on the lower end of the support rod 6 and the bottom sleeve 5, threading the support rod 6 into the bottom sleeve 5.

[0031] The support rod 6 is a steel tube, evenly arranged under the rim 14 of the conical barrel 9. It has a height of 700mm, an outer diameter of 40mm, and a wall thickness of 5mm. A 5mm thick compression spring 8 stopper is welded 600mm inside the top of the support rod 6 to prevent the compression spring 8 from falling into the support rod 6 and provide support for the compression spring 8. ① Compression spring 8. The compression spring 8 has an outer diameter of 30mm and a height of 150mm. The compression spring 8 is placed inside the top support rod 6. The top sleeve 7 is sleeved on the compression spring 8 to produce elastic compression. ② Top sleeve 7. The top sleeve 7 has a height of 100mm, an outer diameter of 40mm, and a wall thickness of 5mm. It is welded under the edge of the rim 14 of the conical barrel 9. A 5mm thick compression spring 8 stopper is welded in the center of the top sleeve 7. The compression spring 8 stopper presses on the compression spring 8 and, together with the compression spring 8 stopper inside the support rod 6, provides a 50mm elastic conversion range for the compression spring 8.

[0032] The conical barrel 9 is a conical steel barrel, through-hole from top to bottom, with the upper end forming the top opening and the lower end forming the bottom opening. The barrel 9 has a top diameter of 350mm, a bottom diameter of 200mm, a height of 300mm, and a wall thickness of 3mm. The barrel 9 is connected to the support rod 6 via four top sleeves 7 surrounding a rim 14. ① Rims 14. Rims 14 are steps extending from the top opening of the barrel, facilitating the installation of the handle 16 and support rod 6. The preferred rim 14 is a steel ring with an outer diameter of 500mm, an inner diameter of 350mm, and a wall thickness of 5mm. Rims 14 are welded to the top of the barrel 9, forming a 75mm rim around the barrel, providing a foundation for the top sleeves 7 and handle 16. ② Support hoop 10. A support hoop 10 with an outer diameter of 290mm, an inner diameter of 270mm, and a wall thickness of 3mm is welded to the interior of the barrel 9. It provides support for the screen 11. Three spring supports are evenly welded to the support hoop 10. Small springs are placed inside the supports to support the upper filter screen. ③ Filter screen. The 300-mesh steel wire filter is welded with two rings. The outer diameter of the rings is 290mm, the inner diameter is 270mm, and the wall thickness is 2mm. The bottom of the rings rests on the springs. ④ Handles. Handles are welded to two opposite sides of the filter screen. After cleaning the drilling cuttings, lift the filter screen out by the handles.

[0033] A steel tube is welded to one side of the rim 14 to serve as the throttle base 15. The tube has an outer diameter of 60mm, an inner diameter of 50mm, and a height of 100mm. It has a threaded interior that mates with the threaded throttle 16 at the bottom of the throttle 16 and can be screwed in and out to adjust the direction of the crank. ① Twist 16. The threaded throttle 16 at the bottom of the throttle 16 fits within the threaded throttle base 15. Twist 16 measures 400mm high, 50mm outer diameter, and 5mm thick. An 8mm diameter through-hole is cut at the top to secure the throttle 16. ② Twist 16 sleeve. The throttle 16 sleeve measures 60mm high, 50mm inner diameter, and 5mm thick. An 8mm diameter through-hole is cut in the center to align with the hole in the throttle 16, for a locking pin to secure the crank. ③ Twist 16 sleeve. The crank handle is welded horizontally to the 16-piece tumbler. The crank handle measures 300mm long, 40mm outer diameter, and 3mm thick. A pair of holes with an 8mm diameter are drilled 60mm from the front end of the crank handle. These holes receive the crank handle cover. ④ The crank handle cover. The crank handle cover measures 50mm long, 40mm inner diameter, and 5mm thick. A tension spring is attached to the bottom of the cover, and the nozzle is attached below the tension spring.

[0034] The nozzle is attached to the tension spring. A water-gas tee 23 is located on one side of the nozzle, serving as a handle for the handheld nozzle. High-pressure water and air are connected to the tee, creating a spray mist. The handheld tee 23 sprays drill cuttings, while wastewater in the cone barrel 9 is drained into a water tank 24.

[0035] A water tank 24 is placed at the bottom of the conical barrel 9 to collect the wastewater after cleaning the drill cuttings. The water tank 24 is 400mm high, 300mm in outer diameter, and 3mm thick. A ring is welded to the top of the water tank 24, serving as the conical inlet 25. The ring has an outer diameter of 300mm, an inner diameter of 250mm, and a wall thickness of 3mm. The bottom of the conical barrel 9 enters the water tank 24 at the conical inlet 25. The ring prevents wastewater from splashing around. A handle is located on each opposite side of the top of the water tank 24. ① Oil-water inlet 26. After cleaning the drill cuttings, the oil-based drilling fluid forms an oil-water mixture, which is separated in the water tank 24. The lighter oil rises, while the heavier water settles at the bottom. The upper oil is collected and discharged through the oil-water inlet 26 for further treatment. ② Clean water inlet 27. The separated water can be recycled. Clean water inlet 27 is located below the oil-water inlet 26 to facilitate the collection of clean water. ③ Sewage outlet 28. After cleaning the drill cuttings, a sediment will form. The sediment is at the bottom and can be discharged through the sewage outlet 28. ④ Sewage outlet. Cleaning water is injected from the cleaning outlet to discharge the sediment and dirt adhering to the bottom of the water tank 24 through the sewage outlet 28.

[0036] Four top sleeves 7 are evenly spaced below the perimeter of the rim 14, corresponding to the bottom sleeves 5 on the base 1. They are supported by support rods 6, providing suspension support for the conical barrel 9 and, under the elastic action of compression springs 8, allowing the conical barrel 9 to spring. Oil-based drilling fluid and cuttings are poured onto the screen 11 within the conical barrel 9. High-pressure atomized water is then used to flush the cuttings through the water-gas tee 23. The resulting wastewater is then discharged through the bottom of the conical barrel 9 into the water tank 24, where it is separated from the oil and water for reuse. The cuttings are placed on the filter screen, which has a hollow bottom. Flushing from the top eliminates back pressure and repetition, resulting in an effective flushing effect.

[0037] The technical idea of the present invention is to provide a resilient screen 11 and a conical barrel 9, and to improve the cleaning efficiency by the resilient movement of the screen 11 and the conical barrel 9. During the flushing process, the upper peripheral edge 14 of the conical barrel 9 can be pressed, and the drill cuttings can vibrate under the elastic action of each compression spring 8, thereby improving the cleaning efficiency. After the drill cuttings are rinsed clean, the filter screen and drill cuttings can be removed by hand using the handle, and the drill cuttings can be poured out and put back into the filter screen for the next flushing. The whole process is easy to operate and saves working time. The main components, such as the fixed plate 3, the support rod 6, the conical barrel 9, and the turning handle 16, are detachable for easy storage and assembly. The entire device does not require special maintenance and can be used for a long time.

[0038] The embodiments disclosed herein are to be considered in all respects as illustrative and non-restrictive, and the embodiments described above may be omitted, replaced, or modified in various forms without departing from the scope of the appended claims and the spirit thereof.

Claims

1. An oil-based drilling fluid cuttings cleaning device, comprising a base and a water tank, characterized in that: The utility model also includes a conical barrel, a screen, a support hoop, a peripheral edge and a handle seat; the conical barrel is open at both ends and is invertedly mounted on a base by a support rod, and a water tank is placed below the conical barrel, and an elastic support member is provided between the upper end of the support rod and the conical barrel; a support hoop is provided at the waist of the conical barrel, a screen is provided above the support hoop, and an elastic support member is provided between the screen and the support hoop; the outer edge of the screen is in clearance with the inner wall of the conical barrel; The peripheral edge is an extended step fixedly mounted on the upper edge of the cone barrel; the throttle seat is fixedly mounted on the upper end surface of the peripheral edge; the lower end of the throttle and the throttle seat are respectively provided with internal and external threads that cooperate with each other; the throttle is threadedly connected to the throttle seat; A fixing plate is provided at the lower end of the support rod; the fixing plate is disc-shaped, and a plurality of fixing thread holes are provided in the circumference of the fixing plate, and is fixedly connected to the base by screws.

2. The oil-based drilling fluid cuttings cleaning device according to claim 1, characterized in that: It also includes a turning handle, a crank handle, and a water vapor tee; the turning handle is arranged on the upper edge of the conical barrel; one end of the crank handle is connected to the upper end of the turning handle, and the other end extends to the top of the conical barrel; the end of the crank handle extending to the top of the conical barrel is hung on the water vapor tee.

3. The oil-based drilling fluid cuttings cleaning device according to claim 2, characterized in that: The water vapor tee is hung on the crank through a tension spring and extends to one end above the cone barrel.

4. The oil-based drilling fluid cuttings cleaning device according to claim 3, characterized in that: The water vapor tee is provided with a nozzle, a water inlet pipe, and an air inlet pipe, and the water inlet pipe and the air inlet pipe are connected with the nozzle.

5. An oil-based drilling fluid cuttings cleaning device according to any one of claims 1 to 4, characterized in that: The water tank is provided with a conical barrel inlet, an oil-water inlet, a clean water inlet, and a sewage outlet, wherein the oil-water inlet, the clean water inlet, and the sewage outlet are arranged on the side wall of the water tank, the sewage outlet is close to the bottom of the water tank, and from the sewage outlet upward are the clean water inlet and the oil-water inlet in sequence; the conical barrel inlet is the upper opening of the water tank, and the lower opening of the conical barrel extends to the inside of the conical barrel inlet.

6. An oil-based drilling fluid cuttings cleaning device according to any one of claims 1 to 4, characterized in that: The base is a square plate body, and base fixing holes are provided at the four corners of the square plate body.

7. An oil-based drilling fluid cuttings cleaning device according to any one of claims 1 to 4, characterized in that: A handle is provided on the edge of the screen.

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