High-efficiency collection equipment for oil slick in gas field and use method

Abstract

The invention discloses gas field water floating oil efficient collecting equipment and a using method, and relates to the technical field of shale gas exploiting.The gas field water floating oil efficient collecting equipment comprises a supporting frame, an oil suction roller, an oil storage assembly, a floating cylinder assembly and a driving assembly, and the oil suction roller, the oil storage assembly, the floating cylinder assembly and the driving assembly are fixed to the supporting frame; the oil scraping groove is fixed to the supporting frame and connected with the oil storage assembly through an oil return pipe, the driving assembly comprises a hydraulic driving wheel and a driving submersible pump, the hydraulic driving wheel is coaxially provided with a driving chain wheel, the driving chain wheel is meshed with a roller chain of the oil suction roller, and the driving submersible pump is connected with a water pumping pipe. The driving submersible pump pumps out high-pressure flowback fluid to push the hydraulic driving wheel to rotate, and the driving chain wheel rotates simultaneously to drive the equipment to move and enable the oil suction roller to rotate. By adopting the equipment, when the floating oil in the gas field water is cleaned, fished and collected, the labor cost of floating oil recovery can be saved, the floating oil collection efficiency is improved, the use energy consumption is reduced, and the equipment plays an important role in reducing cost and improving efficiency for enterprises.

Description

Technical Field

[0001] The present invention relates to the technical field of shale gas exploitation, and in particular to a gas field water floating oil efficient collection device and a use method thereof. Background Technology

[0002] Currently, my country mainly uses fracturing technology to exploit shale gas. A large amount of shale gas flowback fluid is generated in the production stage after drilling and fracturing. In order to save energy and resources and control environmental pollution, the generated shale gas flowback fluid will be transferred to the flowback fluid reservoir for storage and used on the next drilling platform as fracturing fluid for recycling. Due to the needs of some processes, the flowback fluid is always rich in various oils, hydrocarbons and other impurities. The density of these substances is generally less than that of water, forming "floating oil" on the water surface. If the "floating oil" remains on the surface of the pool for a long time, many problems will arise: the working environment and surrounding environment of the flowback fluid storage station are particularly smelly, which seriously threatens the health of staff and villagers; the risk pressure of environmental protection for enterprises is high; at the same time, the current domestic shale gas flowback fluid "floating oil" clearing technology is backward, the manpower consumption is large, the processing cost is high, and there is a great risk of work safety.

[0003] A Chinese patent document with authorization announcement number CN219907124U and publication date October 27, 2023 discloses a floating oil extraction device, including a controller, a floating oil detection part, a suction pump, a delivery pipeline, an oil suction cylinder, an isolator and a suspension frame for being set in a sewage pool, the isolator is fixed on the suspension frame, the oil suction cylinder is fixed in the isolator through the suspension frame, one end of the delivery pipeline is connected to the oil suction cylinder, and the other end is connected to the suction pump, the floating oil detection part is set in the sewage pool for detecting the thickness of the oil, the controller is respectively connected to the suction pump and the floating oil detection part, and the controller is used to control the opening and closing of the suction pump according to the detection results of the floating oil detection part. The device can automatically realize the extraction of floating oil, making the reinjection of wastewater safer and more efficient, and solving the problems of high safety risks, low operating efficiency, and untimely recovery in existing manual salvage methods.

[0004] However, during the use of the above device, the length of the floating oil suction pipe equipped with the equipment has a certain limit, and the length of the suction pipe cannot be too long, otherwise the resistance will be too large and the suction will be insufficient. At the same time, the suction pump on the shore is relatively fixed and the free movement range is very small. Therefore, this type is only suitable for sewage pools with small areas and large and relatively concentrated floating oil thickness, and is not suitable for floating oil salvage in shale gas return liquid reservoirs with ultra-large areas; and this type of equipment directly sucks sewage ashore, resulting in the floating oil composition being more water and less oil, and secondary separation treatment is required, and the overall work efficiency is relatively low. At the same time, the oil pump and other equipment consume a lot of electricity in operation, and the costs of mechanical maintenance, material consumption, operators, and maintenance human resources are high and continue to exist. SUMMARY OF THE INVENTION

[0005] To solve the above technical problems, the present invention proposes an efficient equipment for collecting floating oil in gas field water and its usage method. By using this equipment, when cleaning and collecting the floating oil in gas field water, it can save the labor cost of floating oil recovery, improve the efficiency of floating oil collection, reduce the energy consumption during use, and play an important role in cost reduction and efficiency improvement for enterprises.

[0006] The present invention is implemented by the following technical solutions: An efficient equipment for collecting floating oil in gas field water includes an oil absorption drum, a support frame, an oil storage component, a floating drum component and a driving component. The oil storage component is fixed at one end of the support frame. The end of the oil absorption drum is provided with a drum chain and a through shaft is arranged at the axis. Bearing assemblies are installed at both ends of the through shaft and fixed on the support frame by bolts. A scraping oil groove is arranged on the side of the oil absorption drum close to the oil storage device. The scraping oil groove is fixedly connected to the support frame by bolts. Through holes are arranged on the scraping oil groove, and the through holes are connected to the oil storage component through return oil pipes. The floating drum component is arranged between the oil absorption drum and the oil storage component and fixedly connected to the support frame. The driving component includes a hydraulic driving wheel and a driving submersible pump. The hydraulic driving wheel and the driving submersible pump are fixed on the support frame. A driving sprocket is coaxially installed on the hydraulic driving wheel, and the driving sprocket meshes with the drum chain of the oil absorption drum. The driving submersible pump is connected with a pump water pipe, and the pump water pipe is connected into the interior of the hydraulic driving wheel. The high-pressure return fluid pumped out by the driving submersible pump is ejected to drive the hydraulic driving wheel to rotate. At the same time, the driving sprocket rotates at the same speed, driving the equipment to move and making the oil absorption drum rotate.

[0007] The surface of the oil absorption drum is provided with elastic oil absorption brushes.

[0008] The support frame includes an upper support frame and a lower support frame. The upper and lower support frames are welded together by four support steel structures. The oil absorption drum, the oil storage component and the floating drum component are arranged on the upper support frame, and the driving submersible pump is arranged on the lower support frame.

[0009] There are two groups of the hydraulic driving wheels, symmetrically arranged on the support steel structures at both ends close to the oil absorption drum.

[0010] The oil storage component includes two oil storage tanks, and the bottoms of the two oil storage tanks are connected by a bent connecting pipe.

[0011] A recovery oil pipe is inserted into the oil storage tank, and a self-priming submersible pump is arranged at the end of the recovery oil pipe extending into the oil storage tank.

[0012] Grooved pulleys are also arranged at both ends of the through shaft. An oil containment recovery hose is arranged on the grooved pulley. Both ends of the oil containment recovery hose are connected to the grooved pulley, forming an oil collection circle with the oil absorption drum on the water surface.

[0013] The return oil pipe is connected to the through hole of the scraping oil groove and the oil storage component at an angle of 30° to the horizontal plane.

[0014] The upper support frame is provided with a lifting ring.

[0015] A method for using a highly efficient gas field water floating oil collection device, which includes adjusting the length of the oil recovery hose to the length of the required cleaning range before the device is put into the return liquid reservoir, and then hoisting the device onto the return liquid reservoir, and then surrounding the water surface of the return liquid reservoir with the oil recovery hose to form an oil production space, and then driving the submersible pump to start working and start the oil cleaning work.

[0016] Compared with the prior art, the advantages of the present invention are: 1. The present invention can automatically clear the floating oil, and the whole clearing work can be completed by only one person. No one is required to be on duty and operate the pool during the clearing process, so automatic clearing is realized, which saves a lot of labor costs.

[0017] 2. In the present invention, the oil-absorbing roller is provided with an elastic oil-absorbing brush, which is scraped down and sunk into the scraping tank buffer when passing through the scraping tank and flows into the waste oil storage tank through the oil return pipe for storage. The oil-water separation process is completed in the water pool. The main component of the waste oil liquid scooped ashore is oil, and the water content is very low, so the total amount of treatment and the treatment cost can be better controlled.

[0018] 3. In the present invention, the driving submersible pump is arranged on the lower support frame, and the high-pressure return fluid ejected by the pump drives the hydraulic driving wheel to rotate, thereby driving the equipment to operate and reducing energy loss.

[0019] 4. The present invention adopts a buoy assembly, the weight and volume of the equipment itself are small, it can float on the water surface through buoyancy, and is provided with a lifting ring, which is convenient for transportation and lifting, and can be put into use at any time, and is convenient for being put into the pool, and convenient for maintenance and storage on shore.

[0020] 5. In the present invention, the oil storage tank is provided with an oil recovery pipe. When the waste oil level in the oil storage tank reaches a certain height, the self-starting submersible pump in the tank will work to transport the waste oil to the onshore oil storage equipment for storage and subsequent treatment, further improving the efficiency of the entire oil cleaning process.

[0021] 6. In the present invention, the equipment adopts a self-contained low-voltage submersible pump hydraulic soft drive, and the oil of the self-starting submersible pump is stored on shore for processing, avoiding the safety risk of temporary electricity use.

[0022] 7. The present invention is provided with a retractable oil search hose, and the length can be changed according to the demand, so that all the floating oil on the water surface can be collected in the oil suction area of ​​the oil recovery equipment, so that the floating oil in every corner of the pool can be cleared, ensuring the thoroughness of the clearing. Brief Description of the Figures

[0023] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific implementation methods, wherein: Figure 1 This is the structural diagram of the device of the present invention.

[0024] Markings in the figure: 1. Oil absorption drum, 2. Support frame, 3. Oil storage assembly, 4. Drum chain, 5. Oil scraping groove, 6. Return oil pipe, 7. Hydraulic drive wheel, 8. Driving submersible pump, 9. Driving sprocket, 10. Pump water pipe, 11. Elastic oil absorption brush, 12. Connecting pipe, 13. Recovery oil pipe, 14. Self-starting submersible pump, 15. Oil containment recovery hose, 16. Suspension ring, 17. Floating oil on the water surface, 18. Return flow liquid, 19. Waste oil. Specific implementation manners

[0025] Embodiment 1 Refer to Figure 1 , as a preferred embodiment of the present invention, it includes an oil absorption drum 1, a support frame 2, an oil storage assembly 3, a floating drum assembly and a driving assembly. The oil storage assembly 3 is fixed at one end of the support frame 2. The end of the oil absorption drum 1 is provided with a drum chain 4 and a through shaft is arranged at the axis. Bearing assemblies are installed at both ends of the through shaft and are fixed on the support frame 2 by bolts. An oil scraping groove 5 is arranged on one side of the oil absorption drum 1 close to the oil storage device. The oil scraping groove 5 is fixedly connected to the support frame 2 by bolts. Through holes are arranged on the oil scraping groove 5, and the through holes are connected to the oil storage assembly 3 through a return oil pipe 6. The floating drum assembly is arranged between the oil absorption drum 1 and the oil storage assembly 3 and is fixedly connected to the support frame 2. The driving assembly includes a hydraulic drive wheel 7 and a driving submersible pump 8. The hydraulic drive wheel 7 and the driving submersible pump 8 are fixed on the support frame 2. A driving sprocket 9 is coaxially installed on the hydraulic drive wheel 7, and the driving sprocket 9 meshes with the drum chain 4 of the oil absorption drum 1. The driving submersible pump 8 is connected with a pump water pipe 10, and the pump water pipe 10 is connected into the interior of the hydraulic drive wheel 7. The driving submersible pump 8 pumps out high-pressure return flow liquid to spray and push the hydraulic drive wheel 7 to rotate. At the same time, the driving sprocket 9 rotates at the same speed, driving the device to move and making the oil absorption drum 1 rotate.

[0026] In this embodiment, the floating oil cleaning is automatically carried out. All the cleaning work only needs to be operated by one person and can be completed. No one needs to be on duty and operate and manage at the water pool site during the cleaning process, realizing automatic cleaning, saving a large amount of labor costs. The oil-water separation process is completed in the water pool. The main component of the oil and sewage liquid fished ashore is oil, and the water content is very low. The floating oil collection efficiency is high.

[0027] Embodiment 2 Refer to Figure 1, as another preferred embodiment of the present invention, on the basis of Embodiment 1, further, an elastic oil-absorbing brush 11 is provided on the surface of the oil-absorbing drum 1. When the equipment is running, the driving sprocket 9 meshes with the drum chain 4 of the oil-absorbing drum 1 and drives the oil-absorbing drum 1 to rotate slowly. The elastic oil-absorbing brush 11 fixed on the surface of the oil-absorbing drum 1 absorbs the floating oil and rotates accordingly. During the rotation process, a small amount of backflow liquid flows back into the pool from the root of the brush, and the floating oil continues to be adhered to the brush and rotates to the oil scraping groove 5. At this time, the oil and water are separated. When the oil-adhering brush passes through the oil scraping groove 5, it is scraped and sinks into the oil scraping groove 5 for caching and flows into the waste oil storage tank through the return oil pipe 6 for storage.

[0028] Embodiment 3 See Figure 1 , as another preferred embodiment of the present invention, on the basis of Embodiment 1 and Embodiment 2, further, the support frame 2 includes an upper support frame 2 and a lower support frame 2. The upper and lower support frames 2 are welded and connected into one body by four support steel structures. The oil-absorbing drum 1, the oil storage assembly 3, and the floating drum assembly are arranged on the upper support frame 2, and the driving submersible pump 8 is arranged on the lower support frame 2.

[0029] Further, there are two groups of the hydraulic driving wheels 7, which are symmetrically arranged on the support steel structures near both ends of the oil-absorbing drum 1.

[0030] Further, the oil storage assembly 3 includes two oil storage tanks, and the bottoms of the two oil storage tanks are connected by a bent communicating pipe 12.

[0031] Further, a recovery oil pipe 13 is inserted into the oil storage tank, and a self-priming submersible pump 14 is arranged at one end of the recovery oil pipe 13 extending into the oil storage tank.

[0032] In this embodiment, when the waste oil level in the waste oil storage tank reaches a certain height, the self-priming submersible pump 14 in the tank works to transport the waste oil to the onshore oil storage equipment for storage and subsequent treatment. By providing two oil storage tanks connected by the communicating pipe 12, the capacity of the first floating oil collection is increased, the start-up frequency of the self-priming submersible pump 14 is reduced, and the energy consumption is lowered.

[0033] Embodiment 4 See Figure 1, as the best embodiment of the present invention, an efficient oil collection device for gas field water includes an oil absorption drum 1, a support frame 2, an oil storage assembly 3, a floating drum assembly and a driving assembly. The oil storage assembly 3 is fixed at one end of the support frame 2. The end of the oil absorption drum 1 is provided with a drum chain 4 and a through shaft is arranged at the axis. Both ends of the through shaft are installed with bearing assemblies and fixed on the support frame 2 by bolts. A scraping oil groove 5 is arranged on one side of the oil absorption drum 1 close to the oil storage device. The scraping oil groove 5 is fixedly connected to the support frame 2 by bolts. The scraping oil groove 5 is provided with through holes, and the through holes are connected to the oil storage assembly 3 through a return oil pipe 6. The floating drum assembly is arranged between the oil absorption drum 1 and the oil storage assembly 3 and fixedly connected to the support frame 2. The driving assembly includes a hydraulic driving wheel 7 and a driving submersible pump 8. The hydraulic driving wheel 7 and the driving submersible pump 8 are fixed on the support frame 2. The hydraulic driving wheel 7 is coaxially installed with a driving sprocket 9, and the driving sprocket 9 meshes with the drum chain 4 of the oil absorption drum 1. The driving submersible pump 8 is connected with a pump water pipe 10, and the pump water pipe 10 is connected into the interior of the hydraulic driving wheel 7. The driving submersible pump 8 pumps out high-pressure return fluid to spray and push the hydraulic driving wheel 7 to rotate. At the same time, the driving sprocket 9 rotates at the same speed, driving the device to move and making the oil absorption drum 1 rotate.

[0034] Further, an elastic oil absorption brush 11 is arranged on the surface of the oil absorption drum 1.

[0035] Further, the support frame 2 includes an upper support frame 2 and a lower support frame 2. The upper and lower support frames 2 are welded and connected into one body by four support steel structures. The oil absorption drum 1, the oil storage assembly 3 and the floating drum assembly are arranged on the upper support frame 2, and the driving submersible pump 8 is arranged on the lower support frame 2.

[0036] Further, there are two groups of the hydraulic driving wheels 7, which are symmetrically arranged on the support steel structures near both ends of the oil absorption drum 1.

[0037] Further, the oil storage assembly 3 includes two oil storage tanks, and the bottoms of the two oil storage tanks are connected by a bent connecting pipe 12.

[0038] Further, a recovery oil pipe 13 is inserted into the oil storage tank, and a self-priming submersible pump 14 is arranged at one end of the recovery oil pipe 13 extending into the oil storage tank.

[0039] Further, sprocket wheels are also arranged at both ends of the through shaft, and an oil containment recovery hose 15 is arranged on the sprocket wheels. Both ends of the oil containment recovery hose 15 are connected to the sprocket wheels, forming an oil collection circle with the oil absorption drum 1 on the water surface.

[0040] Further, the return oil pipe 6 is connected to the through hole of the scraping oil groove 5 and the oil storage assembly 3 at an angle of 30° with the horizontal plane.

[0041] Further, a lifting ring 16 is provided on the upper support frame 2.

[0042] In this embodiment, the entire device floats on the water surface due to buoyancy. The high-pressure backflow liquid pumped out by the submersible pump 8 is ejected to drive the hydraulic drive wheel 7 to rotate. The driving sprocket 9 coaxial with the hydraulic drive wheel 7 rotates at the same speed. The driving sprocket 9 meshes with the roller chain 4 of the oil absorption drum 1 and drives the oil absorption drum 1 to rotate slowly. The elastic oil absorption brush 11 fixed on the surface of the oil absorption drum 1 sucks up the floating oil and rotates accordingly. During the rotation process, a small amount of backflow liquid flows back into the pool from the root of the brush. The floating oil continues to be adhered to the brush and rotates to the oil scraping groove 5. At this time, the oil and water are separated. When the sticky oil brush passes through the oil scraping groove 5, it is scraped and sinks into the oil scraping groove 5 for caching and flows into the oil storage tank through the oil return pipe 6 for storage. When the waste oil liquid level in the oil storage tank reaches a certain height, the self-priming submersible pump 14 in the tank works to transport the waste oil to the onshore oil storage equipment for storage and subsequent treatment. At the same time, the sheave coaxial and rotating at the same speed as the oil absorption drum 1 slowly retracts the floating oil recovery hose 15 at the far end, realizing the collection of all the floating oil on the water surface. The high-efficiency floating oil collection device for gas field water in this embodiment can greatly save the labor cost of floating oil recovery, improve the efficiency of floating oil collection, reduce the energy consumption during use, and play an important role in reducing costs and increasing efficiency for enterprises.

Claims

1. A highly efficient collection device for oil floating in gas field water, characterized by: The oil suction drum (1) comprises an oil suction drum (1), a support frame (2), an oil storage assembly (3), a float assembly and a drive assembly, wherein the oil storage assembly (3) is fixed to one end of the support frame (2), a drum chain (4) is arranged at the end of the oil suction drum (1) and a through shaft is arranged at the axis, bearing assemblies are installed at both ends of the through shaft and are fixed to the support frame (2) by bolts, an oil scraping groove (5) is arranged on the side of the oil suction drum (1) close to the oil storage, the oil scraping groove (5) is fixedly connected to the support frame (2) by bolts, a through hole is arranged on the oil scraping groove (5), and the through hole is connected to the oil storage assembly (3) through an oil return pipe (6), and the float assembly is arranged between the oil suction drum (1) and the oil storage assembly (3 ) and is fixedly connected to the support frame (2), the driving assembly comprising a hydraulic driving wheel (7) and a driving submersible pump (8), the hydraulic driving wheel (7) and the driving submersible pump (8) being fixed on the support frame (2), the hydraulic driving wheel (7) being coaxially mounted with a driving sprocket (9), the driving sprocket (9) being meshed with the roller chain (4) of the oil suction roller (1), the driving submersible pump (8) being connected with a pump water pipe (10), the pump water pipe (10) being connected to the interior of the hydraulic driving wheel (7), driving the submersible pump (8) to pump out high-pressure return fluid to drive the hydraulic driving wheel (7) to rotate, and at the same time the driving sprocket (9) rotates at the same speed, driving the device to move and causing the oil suction roller (1) to rotate.

2. A gas field water floating oil efficient collection device according to claim 1, characterized in that: The surface of the oil absorption roller (1) is provided with an elastic oil absorption brush (11).

3. A gas field water floating oil efficient collection device according to claim 1, characterized in that: The support frame (2) comprises an upper support frame (2) and a lower support frame (2), the upper and lower support frames (2) are welded together via four supporting steel structures, the oil suction drum (1), the oil storage assembly (3), and the buoy assembly are arranged on the upper support frame (2), and the driving submersible pump (8) is arranged on the lower support frame (2).

4. A gas field water floating oil efficient collection device according to claim 1, characterized in that: The hydraulic drive wheels (7) include two groups, which are symmetrically arranged on the supporting steel structure near the two ends of the oil absorption drum (1).

5. A gas field water floating oil efficient collection device according to claim 1, characterized in that: The oil storage assembly (3) comprises two oil storage tanks, the bottoms of the two oil storage tanks being connected via a curved connecting pipe (12).

6. A gas field water floating oil efficient collection device according to claim 5, characterized in that: An oil recovery pipe (13) is inserted into the oil storage tank, and a self-starting submersible pump (14) is provided at one end of the oil recovery pipe (13) extending into the oil storage tank.

7. A gas field water floating oil efficient collection device according to claim 1, characterized in that: Grooves are also provided at both ends of the through shaft, and an oil recovery hose (15) is provided on the groove wheels. Both ends of the oil recovery hose (15) are connected to the groove wheels to form an oil collection circle on the water surface with the oil suction drum (1).

8. A gas field water floating oil efficient collection device according to claim 1, characterized in that: The oil return pipe (6) is connected to the oil scraper groove (5) through hole and the oil storage assembly (3) at an angle of 30° with the horizontal plane.

9. A gas field water floating oil efficient collection device according to claim 3, characterized in that: The upper support frame (2) is provided with a lifting ring (16).

10. A method for using a gas field water floating oil efficient collection device according to any one of claims 1 to 9, characterized in that: Before the equipment is put into the return fluid reservoir, the length of the oil recovery hose (15) is adjusted to the length of the area to be cleaned, and then the equipment is hoisted and put into the return fluid reservoir. The oil recovery hose (15) is then used to surround the water surface of the return fluid reservoir to form an oil recovery space. Then, the submersible pump (8) is driven to start working and the oil cleaning work is started.

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