Movable transmission skid for recycling waste oil liquid of drilling and production platform

Abstract

The utility model provides a movable transmission skid for recycling waste oil of a drilling and production platform, which belongs to the technical field of petrochemical machinery and comprises a waste liquid recycling box and a diaphragm pump which are detachably mounted on a support. Meanwhile, the bottom of the waste liquid recycling box is connected with an inlet of the diaphragm pump through a pump inlet pipeline, and an outlet of the diaphragm pump is provided with a pump outlet pipeline. The movable conveying skid can be rapidly connected with a system oil conveying pipeline through a flange and other universal structures, installation and popularization are easy to achieve, recycling of waste oil liquid generated by various mining and maintenance operations can be achieved, manpower and material resources needed by oil residue tank transportation are saved, meanwhile, waste oil is recycled, economic benefits are generated, and the movable conveying skid is worthy of popularization and application. And the problems of potential safety hazards, environmental pollution and the like in the storage, transportation and treatment processes of the waste oil-water mixture are effectively avoided.

Description

Technical Field

[0001] The utility model belongs to the technical field of petrochemical machinery, and in particular relates to a movable transmission skid block used for recycling waste oil on a drilling and production platform. Background Art

[0002] During the production and exploitation of oil wells on offshore platforms, various oil waste liquids will be generated during daily sampling and testing, equipment maintenance, and oil and water well operations, including but not limited to organic solvents such as aviation kerosene, diesel, and lubricating oil. In particular, in order to ensure the accuracy of the test results during oil sampling and testing, the sampling process needs to drain dead oil or take samples multiple times, which will produce a lot of waste oil liquids. The accumulated losses from various operations such as long-term production and maintenance should not be underestimated. For offshore platforms, waste liquids are usually treated as waste garbage. Usually, such oil waste liquids will be discharged into oil residue tanks (also called waste oil tanks), and then returned to land as waste liquids after the oil residue tanks are full. Oil residue tanks containing waste liquids are hazardous chemicals and need to be promptly applied for special ships to transport them back to land. If they are not returned in time, they will not only occupy the limited deck space of the platform, but also produce harmful hydrocarbon vapors during storage, which may cause poisoning and flash fires.

[0003] When the oil residue tank is almost full and needs to be returned to land for waste liquid disposal, it first needs to be transported to the ship by crane on the offshore platform. After the ship docks, it needs to be hoisted to the dock and then loaded onto a truck and transported to the treatment end by land for waste liquid treatment. Since the oil residue tank is a hazardous chemical, it needs to be transported to land by a special ship. From the declaration of hazardous chemicals returning to land to the coordination of ships, a lot of manpower, financial resources and transportation capacity are consumed. In all hoisting processes, there is a risk of people being squeezed, bumped, or even smashed. According to the different volumes of tanks, if the weight of the full tank exceeds a certain value (different companies may have different requirements), a large-scale hoisting work permit is required to conduct a corresponding operation safety risk analysis, and the empty tank needs to be returned to the offshore platform in the same way, resulting in a huge waste of manpower and material resources. Therefore, the oil residue tank containing waste oil and water requires certain expenses in the storage, transportation or treatment links, which also invisibly increases the cost of oil production. In addition, during the transportation of oil residue tanks, waste oil will produce harmful hydrocarbon vapor (the amount of vapor will increase in summer when the temperature is high). If it is not stored properly, not sealed tightly, and poorly ventilated, it may cause poisoning to people by inhalation. When the hydrocarbon vapor reaches a certain concentration, it may flash or even explode, causing a fire, which poses a great safety hazard. At the same time, during the transportation process, improper transportation may cause waste oil to spill or overflow, pollute the soil, air, and ocean, and cause environmental pollution, which invisibly increases environmental risks. Utility Model Content

[0004] In view of this, the utility model aims to propose a movable transmission skid for recycling waste oil from drilling and production platforms, which can realize the recycling of waste oil generated by various mining and maintenance operations, save the manpower and material resources required for the transportation of oil slag tanks, and at the same time recycle waste oil to generate economic benefits, and effectively avoid safety hazards, environmental pollution and other problems that arise during the storage, transportation and treatment of waste oil-water mixtures.

[0005] To achieve the above-mentioned purpose, the technical solution of the utility model is implemented as follows: a movable transmission skid for recycling waste oil from a drilling and production platform, including a waste liquid recovery box and a diaphragm pump, both of which can be detachably installed on a bracket, and at the same time, the bottom of the waste liquid recovery box is connected to the inlet of the diaphragm pump through a pump inlet pipeline, and the outlet of the diaphragm pump is provided with a pump outlet pipeline.

[0006] Furthermore, the waste liquid recovery box includes a box body and a box cover, wherein the box cover is detachably mounted on the box body, and a filter screen is detachably mounted in the box body near the box cover.

[0007] Furthermore, an elbow is installed at the lower end of the box body, and one end of the elbow away from the box body is connected to the pump inlet pipeline.

[0008] Furthermore, a first ball valve is installed on the pump inlet pipeline.

[0009] Furthermore, a check valve and a second ball valve are installed on the pump outlet pipeline.

[0010] Furthermore, the diaphragm pump is a pneumatic diaphragm pump.

[0011] Furthermore, the waste liquid recovery box and the diaphragm pump are connected to the bracket via bolts; the inlet of the diaphragm pump is detachably connected to the pump inlet pipeline via a flange.

[0012] Compared with the prior art, the movable transmission skid for recycling waste oil from drilling and production platforms described in the utility model has the following advantages: the movable transmission skid described in the utility model connects the inlet of the diaphragm pump to the waste liquid recovery box, and the outlet of the diaphragm pump to the system oil pipeline, and uses a pneumatic diaphragm pump as a power source to pressurize and transmit the waste oil-water mixture to the oil pipeline. After using this device, the drilling and production platform no longer needs an oil residue tank, which can save the manpower and material resources required for transporting the oil residue tank between the platform end and the land treatment plant. At the same time, the recycling of waste oil generates economic benefits, and also avoids the safety and environmental risks brought by the transportation, storage and treatment of oil residue tanks.

[0013] (1) The movable transmission skid of the utility model can be quickly connected to the system oil pipeline through a common structure such as a flange, and is easy to install and promote;

[0014] (2) Except for the elbow, the movable transmission skid of the utility model is connected to each other by threads, bolts and flanges. The whole can be disassembled and assembled on site. It has the advantages of clear structure, flexible disassembly and assembly, high space utilization, etc., and is particularly suitable for production operations on drilling and production platforms;

[0015] (3) By using the movable transmission skid of the utility model, the use of an oil residue tank can be eliminated. The floor space occupied by the oil residue tank is much smaller than that of the oil residue tank. The space vacated by the original oil residue tank can be used to store other items or equipment, such as ordinary / metal trash cans, tool boxes, gas cylinders, ton bags, etc. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The accompanying drawings constituting a part of the present invention are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention. In the accompanying drawings:

[0017] Figure 1 This is a schematic structural diagram of a movable transmission skid for recycling waste oil on a drilling and production platform according to an embodiment of the utility model;

[0018] Figure 2 This is a front view of a movable transmission skid for recycling waste oil on a drilling and production platform according to an embodiment of the utility model;

[0019] Figure 3 This is a left view of the movable transmission skid for recycling waste oil on a drilling and production platform according to an embodiment of the utility model;

[0020] Figure 4 for Figure 2 AA section diagram in.

[0021] Description of reference numerals:

[0022] 1. Box body; 2. Bracket; 3. Diaphragm pump; 4. Pump inlet pipeline; 5. Box cover; 6. Filter; 7. Elbow; 8. First ball valve; 9. Pump outlet pipeline; 10. Check valve; 11. Second ball valve. DETAILED DESCRIPTION

[0023] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other.

[0024] The present invention will be described in detail below with reference to the accompanying drawings and in combination with embodiments.

[0025] The utility model is to solve various problems caused by waste oil-water mixtures generated in various daily work processes of drilling and production platforms, and specially provide a transfer and transportation device for small-scale oil-water mixtures. The device is a movable transmission skid for recycling waste oil from drilling and production platforms, which can be quickly installed on the crude oil system pipeline. The device connects the inlet of the diaphragm pump 3 to the waste liquid recovery box, and the outlet of the diaphragm pump 3 to the system oil pipeline, and uses a pneumatic diaphragm pump as a power source to pressurize and transmit the waste oil-water mixture to the oil trunk line. After using this device, the drilling and production platform no longer needs an oil residue tank, which can save the manpower and material resources required to transport the oil residue tank between the platform end and the land treatment plant, and at the same time recycle waste oil to generate economic benefits, and also avoid the safety and environmental risks brought about by the transportation, storage and treatment of oil residue tanks. The system oil pipeline and oil residue tank are both prior art. Specifically, such as Figure 1-Figure 4 As shown, the utility model is a movable transmission skid for recycling waste oil from a drilling and production platform, comprising a waste liquid recovery box and a diaphragm pump 3. Preferably, the diaphragm pump 3 is a pneumatic diaphragm pump, which is used for pressurized transportation of mixed liquids, and the waste oil recovery box is used for collecting various waste oil mixed liquids generated by the platform; the waste liquid recovery box and the diaphragm pump 3 can be detachably mounted on a bracket 2, preferably, the waste liquid recovery box and the diaphragm pump 3 are connected to the bracket 2 by bolts; the waste liquid recovery box comprises a box body 1 and a box cover 5, and the box cover 5 can be detachably mounted on the box body 1. A filter screen 6 is detachably installed at a position near the box cover 5 in the box body 1. Preferably, the filter screen 6 is connected to the box body 1 by bolts. After the personnel opens the box cover 5 and pours waste liquid into the box body 1, if the waste liquid contains mud, iron filings or other accidentally dropped debris, the filter screen 6 can effectively prevent the debris from falling into the box body 1. At the same time, the filter screen 6 can also filter out a part of the sludge and sand (or sediment), ensuring that the oil-water mixture can smoothly enter the diaphragm pump 3, effectively preventing hard objects from damaging the pump body or causing blockage of the transmission pipeline.

[0026] An elbow 7 is welded and installed at the lower end of the box body 1, and the end of the elbow 7 away from the box body 1 is connected to the pump inlet pipeline 4, so that the waste liquid oil can flow out from the bottom of the box body 1. On the one hand, it can improve the flow efficiency of the waste oil by gravity, and on the other hand, it can effectively avoid the liquid from remaining at the bottom of the box, prevent the deposited oil and wax from clogging the elbow 7, and slow down the corrosion of the box body 1 by the waste oil; the end of the pump inlet pipeline 4 connected to the away from the elbow 7 is detachably connected to the inlet of the diaphragm pump 3 through a flange and bolts, and can be detached and separated for easy maintenance, movement and cleaning. At the same time, a first ball valve 8 is installed on the pump inlet pipeline 4, which is used as the inlet valve of the pump. When the movable transmission skid is in the standby state, the first ball valve 8 can be closed to prevent the waste liquid in the waste liquid recovery box from entering the pump cavity of the diaphragm pump 3 to cause scaling and waxing, and the first ball valve 8 can realize the emergency interruption of the delivery function, and when the oil refluxes after the pump outlet valve of the diaphragm pump 3 fails, the oil overflow can be prevented. The waste liquid recovery box is placed on the bracket 2 so that the waste liquid recovery box is suspended in the air, and the pump inlet pipe section can be directly connected to the elbow 7 at the bottom of the waste liquid recovery box, which can effectively prevent the waste oil from remaining at the bottom of the box body 1 and effectively slow down the corrosion of the box body 1. In the description of the present utility model, it should be understood that the orientation or position relationship indicated by the terms "upper", "lower", "top", "bottom", "inside", "outside", etc. is based on the orientation or position relationship shown in the accompanying drawings, which is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model. In addition, the terms "first", "second", etc. are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first", "second", etc. can explicitly or implicitly include one or more of the features.

[0027] The outlet of the diaphragm pump 3 is provided with a pump outlet pipeline 9, on which a check valve 10 and a second ball valve 11 are installed; the check valve 10 is used to prevent the crude oil in the oil pipeline from flowing back to the movable transmission skid, and the second ball valve 11 is used as the outlet valve of the diaphragm pump 3, and can also be used as an isolation guarantee when the check valve 10 fails. After the movable transmission skid described in the utility model is connected to the crude oil system oil pipeline, the first ball valve 8 between the diaphragm pump 3 and the waste liquid recovery tank is opened, and the valve between the outlet of the diaphragm pump 3 and the original system oil pipeline is opened, and a high-pressure air power source is provided to drive the diaphragm pump 3. At this time, the liquid in the waste liquid recovery tank will be pumped to the original system oil pipeline. The movable transmission skid described in the utility model can be quickly connected to the system oil pipeline through a general structure such as a flange, which can save the manpower and material resources required for the transportation of the oil residue tank, recycle waste oil to generate economic benefits, and avoid the safety and environmental risks brought by the transportation, storage, and treatment of the oil residue tank. Except for the elbow 7, the various components of the skid are connected to each other by bolts and flanges. The whole can be disassembled and assembled on site, and the floor space occupied is much smaller than the oil residue tank. It has the advantages of clear structure, flexible disassembly and assembly, high space utilization, and waste liquid output benefits. It is particularly suitable for production operations on drilling and production platforms.

[0028] When waste oil is generated during sampling, oil and water well operation, and equipment maintenance, the staff opens the box cover 5 of the movable transmission skid described in the utility model and pours the collected waste oil into the box body 1. If the waste liquid contains mud, iron filings, or other debris that accidentally falls, the filter 6 in the box body 1 can effectively prevent the debris from falling into the box body 1. At the same time, the filter 6 can also filter a part of the sludge sediment (or sediment). When the liquid level in the box body 1 reaches the filter 6 or is slightly higher than the filter 6, open the first ball valve 8 at the inlet pipe end of the diaphragm pump 3, and make sure that the outlet of the diaphragm pump 3 is correctly connected to the original system oil pipeline and the check valve 10, the second ball valve 11 and other valves are all turned on. At this time, a high-pressure gas source is provided to drive the diaphragm pump 3, the liquid level in the box body 1 drops, and the waste liquid is gradually sent to the crude oil system oil pipeline by the diaphragm pump 3. When the running sound of the diaphragm pump 3 suddenly increases, and the vibration amplitude of the pump inlet pipeline 4 and the box 1 increases, it can be determined that the waste oil in the box 1 has been pumped into the oil pipeline. At this time, the air supply of the diaphragm pump 3 is stopped first, and the inlet and outlet valves of the pump are closed after the diaphragm pump 3 is completely still. At this point, the work of collecting and transporting waste liquid is completed. High-pressure air source is a prior art.

[0029] The skid block device of the utility model can directly transfer the waste oil-water mixture to the oil pipeline. After using the device, the platform no longer needs an oil residue tank, which can save the manpower and material resources required for transporting the oil residue tank between the platform end and the land treatment plant. At the same time, recycling waste oil can generate economic benefits and solve the potential safety hazards and environmental pollution problems that may exist in the storage, transportation and treatment of waste oil tanks from the source. Except for the elbow 7, the various components of the skid block are connected to each other by bolts and flanges, and the floor space is much smaller than that of the oil residue tank. It has the advantages of clear structure, flexible disassembly and assembly, high space utilization, and waste liquid output income, and is particularly suitable for drilling and production platform production operations.

[0030] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A movable transmission skid for recycling waste oil from a drilling platform, characterized in that: It comprises a waste liquid recovery box and a diaphragm pump (3), both of which can be detachably mounted on a bracket (2), and the bottom of the waste liquid recovery box is connected to the inlet of the diaphragm pump (3) through a pump inlet pipeline (4), and the outlet of the diaphragm pump (3) is provided with a pump outlet pipeline (9).

2. The movable transmission skid for recycling waste oil from a drilling platform according to claim 1 is characterized by: The waste liquid recovery box comprises a box body (1) and a box cover (5), wherein the box cover (5) is detachably mounted on the box body (1), and a filter screen (6) is detachably mounted in a position close to the box cover (5) in the box body (1).

3. The movable transmission skid for recycling waste oil from a drilling platform according to claim 2 is characterized by: An elbow (7) is installed at the lower end of the box body (1), and the end of the elbow (7) away from the box body (1) is connected to the pump inlet pipeline (4).

4. The movable transmission skid for recycling waste oil from a drilling platform according to claim 1 is characterized by: A first ball valve (8) is installed on the pump inlet pipeline (4).

5. The movable transmission skid for recycling waste oil from a drilling platform according to claim 1 is characterized by: A check valve (10) and a second ball valve (11) are installed on the pump outlet pipeline (9).

6. The movable transmission skid for recycling waste oil from a drilling platform according to claim 1 is characterized by: The diaphragm pump (3) is a pneumatic diaphragm pump.

7. The movable transmission skid for recycling waste oil from a drilling platform according to claim 1 is characterized by: The waste liquid recovery box and the diaphragm pump (3) are both connected to the bracket (2) via bolts; the inlet of the diaphragm pump (3) is detachably connected to the pump inlet pipeline (4) via a flange.

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