CN111635096A - Oil sludge recycling system and method - Google Patents
Oil sludge recycling system and method Download PDFInfo
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- CN111635096A CN111635096A CN202010419030.1A CN202010419030A CN111635096A CN 111635096 A CN111635096 A CN 111635096A CN 202010419030 A CN202010419030 A CN 202010419030A CN 111635096 A CN111635096 A CN 111635096A
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- 239000010802 sludge Substances 0.000 title claims abstract description 83
- 238000000034 method Methods 0.000 title claims abstract description 36
- 238000004064 recycling Methods 0.000 title claims abstract description 36
- 239000003921 oil Substances 0.000 claims abstract description 202
- 238000010438 heat treatment Methods 0.000 claims abstract description 117
- 238000005406 washing Methods 0.000 claims abstract description 95
- 239000003129 oil well Substances 0.000 claims abstract description 46
- 238000002156 mixing Methods 0.000 claims abstract description 36
- 239000010779 crude oil Substances 0.000 claims abstract description 26
- 238000004519 manufacturing process Methods 0.000 claims abstract description 15
- 235000019198 oils Nutrition 0.000 claims description 192
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 41
- 238000004062 sedimentation Methods 0.000 claims description 16
- 238000011010 flushing procedure Methods 0.000 claims description 13
- 239000002699 waste material Substances 0.000 claims description 11
- 238000003756 stirring Methods 0.000 claims description 7
- 238000003860 storage Methods 0.000 claims description 5
- 239000007864 aqueous solution Substances 0.000 claims description 4
- 239000012535 impurity Substances 0.000 claims description 4
- 238000010790 dilution Methods 0.000 claims description 3
- 239000012895 dilution Substances 0.000 claims description 3
- 239000012530 fluid Substances 0.000 claims description 3
- 235000019476 oil-water mixture Nutrition 0.000 claims description 3
- 238000005259 measurement Methods 0.000 claims description 2
- 239000002245 particle Substances 0.000 claims description 2
- 239000002344 surface layer Substances 0.000 claims 1
- 239000012188 paraffin wax Substances 0.000 abstract description 12
- 238000011084 recovery Methods 0.000 abstract description 7
- 239000003814 drug Substances 0.000 abstract description 3
- 230000007613 environmental effect Effects 0.000 abstract description 3
- 239000000203 mixture Substances 0.000 description 7
- 239000012071 phase Substances 0.000 description 7
- 239000000126 substance Substances 0.000 description 4
- 230000009286 beneficial effect Effects 0.000 description 3
- 239000007788 liquid Substances 0.000 description 3
- 238000000926 separation method Methods 0.000 description 3
- 239000013043 chemical agent Substances 0.000 description 2
- 238000004140 cleaning Methods 0.000 description 2
- 239000008187 granular material Substances 0.000 description 2
- 239000003208 petroleum Substances 0.000 description 2
- 238000000197 pyrolysis Methods 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 239000004568 cement Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 229940079593 drug Drugs 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 239000002244 precipitate Substances 0.000 description 1
- 239000002455 scale inhibitor Substances 0.000 description 1
- 239000007790 solid phase Substances 0.000 description 1
- 239000002351 wastewater Substances 0.000 description 1
- 239000001993 wax Substances 0.000 description 1
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F11/00—Treatment of sludge; Devices therefor
- C02F11/12—Treatment of sludge; Devices therefor by de-watering, drying or thickening
- C02F11/121—Treatment of sludge; Devices therefor by de-watering, drying or thickening by mechanical de-watering
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F11/00—Treatment of sludge; Devices therefor
- C02F11/12—Treatment of sludge; Devices therefor by de-watering, drying or thickening
- C02F11/13—Treatment of sludge; Devices therefor by de-watering, drying or thickening by heating
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B36/00—Heating, cooling or insulating arrangements for boreholes or wells, e.g. for use in permafrost zones
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
- E21B43/34—Arrangements for separating materials produced by the well
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- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
- Geology (AREA)
- Environmental & Geological Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Water Supply & Treatment (AREA)
- Organic Chemistry (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Hydrology & Water Resources (AREA)
- Mechanical Engineering (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Treatment Of Sludge (AREA)
Abstract
The invention provides an oil sludge recycling system and method, which comprises a treatment tank, wherein the treatment tank is respectively communicated with a mixing pipeline and a hot washing pipeline through an oil discharge pipeline, the treatment tank is connected with a heating mechanism, and the mixing pipeline is communicated with a crude oil metering transfer station; the hot washing pipeline is communicated with a casing washing pipeline and an oil production pipe which are arranged at the wellhead in parallel through pipelines, the casing washing pipeline is introduced into the casing, an outlet of the oil production pipe is communicated with an oil outlet pipe and a single-quantity pipeline in parallel, the oil outlet pipe of each oil well is communicated with a mixed pipeline, and valves are arranged on the hot washing pipeline, the casing washing pipeline, the single-quantity pipeline, the mixed pipeline and the oil outlet pipe. The method realizes timely recovery treatment of the crude oil falling to the ground, the recovery rate reaches 99%, the oil sludge does not need to be transferred to an oil sludge treatment plant for unified treatment, the labor intensity of workers is reduced, the treatment time and cost are saved, and the safety and environmental protection risks are reduced. The invention not only can recover oil, but also has multiple functions of hot washing, paraffin removal, medicine addition and single-dose operation, and is economical, environment-friendly and practical.
Description
Technical Field
The invention belongs to the technical field of oil sludge treatment, and particularly relates to an oil sludge recycling system and method.
Background
The oil sludge is sludge generated in the processes of crude oil extraction, storage, gathering and processing and crude oil produced liquid treatment, the oil content of the sludge is high, and direct discharge can cause pollution and resource waste.
The existing methods for recycling the oil sludge include a pyrolysis method, a thermal washing method and physicochemical treatment. Among them, the physical and chemical treatment is mainly used for oil-bearing oil sands. Chemical agents are added in the treatment process, special treatment facilities are needed, the treatment process is complex, and the cost is high. And the oil recovery is not thorough, and the problems of wastewater and waste residue secondary pollutants exist, so that the oil still needs to be further treated and recovered. Although the pyrolysis method has a high recovery rate of oil resources, it requires a large investment in equipment and is difficult to carry out. The hot washing method is to wash the oily sludge repeatedly with hot water solution, add chemical agent in the washing process, heat, mix and stir, then stand and precipitate, the separated oil phase enters the oil storage tank, and the cleaning solution can be recycled.
At present, the oil field oil sludge on the ground mainly adopts a centralized treatment mode of an oil sludge treatment plant, namely, the oil sludge generated by each well station reaches a certain amount and is transported to a treatment point. Because oil field well station dispersion, the dirty oil mud produces a lot of, wide face, collects the transportation process and wastes time and energy, and the fatlute is stacked in a large number and also can cause certain risk to the environment. Moreover, the sludge treatment device of the oil sludge treatment plant has large equipment investment and single function.
Disclosure of Invention
The invention aims to provide an oil sludge recycling system, which overcomes the technical problems in the prior art.
Another object of the present invention is to provide a method for using a sludge recycling system, which recycles oil in sludge and is used for hot washing and paraffin removal of oil wells and pipelines.
Therefore, the technical scheme provided by the invention is as follows:
the utility model provides a fatlute recycle system, is including handling the jar, it communicates mixing line and hot washing pipeline respectively to handle the jar through oil discharge line, it is connected with heating mechanism to handle the jar, mixing line intercommunication crude oil measurement connects the station of changeing, hot washing pipeline intercommunication oil well pipeline, all be equipped with the valve on oil discharge line, mixing line and the hot washing pipeline.
The processing tank is including subsiding part and overflow portion, subside and separate through the overflow plate between part and the overflow portion, the top of subsiding the part is equipped with the filter screen, it is equipped with the waste mud export to subside the part downside, oil discharge line communicates with overflow portion, be equipped with oil drain valve, centrifugal pump and single current valve on the oil discharge line.
The oil well pipeline comprises a casing flushing pipeline and an oil production pipe, the casing flushing pipeline and the oil production pipe are communicated with the hot flushing pipeline in parallel, the casing flushing pipeline is led into the casing, an outlet of the oil production pipe is communicated with the oil production pipe and the single-quantity pipeline in parallel, the oil production pipe of each oil well is communicated with the mixed pipeline, and valves are arranged on the hot flushing pipeline, the casing flushing pipeline, the single-quantity pipeline, the mixed pipeline and the oil production pipe.
Heating mechanism includes heating furnace, heating furnace outlet conduit line, heating furnace return water pipeline and heating coil, heating coil locates in the treatment tank, heating coil's both ends communicate with heating furnace outlet conduit line, heating furnace return water pipeline respectively, be equipped with heating furnace outlet valve and circulating pump on the heating furnace outlet conduit line.
And the single-measuring pipeline is provided with a flowmeter and is communicated with the treatment tank through a pipeline.
The overflow part is provided with a dosing and stirring device.
The sedimentation part and the overflow part are respectively provided with a first heating coil and a second heating coil, a heating furnace water outlet pipeline, the second heating coil, the first heating coil and a heating furnace water return pipeline are sequentially connected, the heating furnace water outlet pipeline and the heating coil are connected through the first pipeline, and the first pipeline is provided with an overflow part inlet valve;
the heating furnace water outlet pipeline is communicated with the hot washing pipeline through a pipeline II, a heating furnace hot washing valve is arranged on the pipeline II, and the pipeline I and the pipeline II are communicated with the heating furnace water outlet pipeline in parallel.
A method for using an oil sludge recycling system comprises the steps of introducing oil sludge into a treatment tank, treating to obtain recycled oil, storing the recycled oil, enabling the recycled oil to flow out through an oil discharge pipeline, and finally introducing the recycled oil into a crude oil metering transfer station through a mixed pipeline, or entering a hot washing pipeline through the oil discharge pipeline to carry out hot washing on an oil well or a pipeline, so that the recycling of the oil in the oil sludge is realized, or when the oil sludge is not recycled, communicating a single quantity pipeline with the treatment tank, metering the yield of a single oil well, enabling the oil to flow out through the oil discharge pipeline, and finally introducing the oil into the crude oil metering transfer station through the mixed pipeline.
The treatment process of introducing the oil sludge into the treatment tank comprises the following steps: fatlute lets in the processing jar, at first filters the silt impurity of large granule by the filter screen, and fatlute through the filter screen gets into the part of subsiding, then adds water or aqueous solution and dilutes the while stirring, subsides under the heating condition, and the subsides mud of lower part is discharged by the waste mud export, and after the oil-water mixture layering of upper portion, the oil on top layer is stored to overflow portion by the overflow board overflow.
When the oil well or the pipeline needs to be subjected to hot washing, a valve on the mixing pipeline is closed, a valve on the oil discharge pipeline, a valve on the hot washing pipeline and a valve on the casing well washing pipeline are opened, the centrifugal pump is started, oil stored in the overflow part flows into the hot washing pipeline through the oil discharge pipeline after being heated by the heating mechanism, and then enters the casing to carry out hot washing on the oil well, or enters the oil well pipeline to carry out hot washing on the pipeline between the well site and the crude oil metering transfer station;
when the output of a single oil well needs to be measured, the valve on the hot washing pipeline and the valve on the oil outlet pipe are closed, the valve on the single-quantity pipeline, the valve on the mixing pipeline and the check valve are opened, the centrifugal pump is started, the oil well output liquid enters the treatment tank through the pipeline and the flowmeter, and then enters the crude oil measuring transfer station through the oil discharge pipeline and the mixing pipeline.
The invention has the beneficial effects that:
the oil sludge recycling system provided by the invention realizes timely recycling treatment of the crude oil falling to the ground, the recycling rate reaches 99%, the oil sludge does not need to be transferred to an oil sludge treatment plant for unified treatment, the labor intensity of workers is reduced, the treatment time and cost are saved, and the safety and environmental protection risks are reduced.
The invention utilizes the existing heating furnace in the well site, hot water in the heating furnace circulates in the coil pipe, the purpose of heating oil sludge is achieved, and the separation of oil and sludge is better realized. The hot washing pipeline is communicated with an oil discharge pipeline of the treatment tank, and the oil well can be subjected to hot washing and paraffin removal through switching of the process valve, and the pipeline can be subjected to hot washing and paraffin removal. When no dirty oil sludge is processed, single-quantity operation is carried out on the oil well in the well site through switching processes.
The invention not only can recover oil, but also has multiple functions of hot washing, paraffin removal, medicine addition and single-amount operation, is economical, environment-friendly and practical, effectively collects and recycles oil sludge, recovers petroleum resources and reduces treatment cost.
In order to make the aforementioned and other objects of the present invention comprehensible, preferred embodiments accompanied with figures are described in detail below.
Drawings
Fig. 1 is a schematic structural diagram of an embodiment of the present invention.
In the figure:
description of reference numerals:
1. a settling part; 2. an overflow portion; 3. a first heating coil; 4. a second heating coil; 5. an overflow plate; 6. an overflow inlet valve; 7. a circulation pump; 8. an outlet valve of the heating furnace; 9. hot washing the valve with a heating furnace; 10. an oil drain valve; 11. a centrifugal pump; 12. a check valve; 13. hot washing the valve; 14. a mixing line valve; 15. an oil pipe mixing valve; 16. an oil pipe single-quantity valve; 17. a sleeve valve; 18. a first pipeline; 19. a second pipeline; 20. heating furnace; 21. a filter screen; 22. a waste sludge outlet; 23. an oil discharge line; 24. hot washing the pipeline; 25. a production string; 26. a casing well-flushing pipeline; 27. an oil outlet pipe; 28. a single-volume line; 29. a mixing line; 30. a heating furnace water outlet pipeline; 31. a water return pipeline of the heating furnace.
Detailed Description
The following description of the embodiments of the present invention is provided for illustrative purposes, and other advantages and effects of the present invention will become apparent to those skilled in the art from the present disclosure.
In the present invention, the upper, lower, left, and right in the drawings are regarded as the upper, lower, left, and right of the sludge recycling system described in the present specification.
The exemplary embodiments of the present invention will now be described with reference to the accompanying drawings, however, the present invention may be embodied in many different forms and is not limited to the embodiments described herein, which are provided for complete and complete disclosure of the present invention and to fully convey the scope of the present invention to those skilled in the art. The terminology used in the exemplary embodiments illustrated in the accompanying drawings is not intended to be limiting of the invention. In the drawings, the same units/elements are denoted by the same reference numerals.
Unless otherwise defined, terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. Further, it will be understood that terms, such as those defined in commonly used dictionaries, should be interpreted as having a meaning that is consistent with their meaning in the context of the relevant art and will not be interpreted in an idealized or overly formal sense.
Example 1:
the invention provides an oil sludge recycling system which comprises a treatment tank, wherein the treatment tank is respectively communicated with a mixing pipeline 29 and a hot washing pipeline 24 through an oil discharge pipeline 23, the treatment tank is connected with a heating mechanism, the mixing pipeline 29 is communicated with a crude oil metering transfer station, the hot washing pipeline 24 is communicated with an oil well pipeline, and valves are arranged on the oil discharge pipeline 23, the mixing pipeline 29 and the hot washing pipeline 24.
The oil in the oil sludge is recovered by the treatment tank, and the recovered oil can enter a crude oil metering transfer station through a mixing pipeline 29 from an oil discharge pipeline 23, or can be subjected to hot washing operation on an oil well or a pipeline through a hot washing pipeline 24 from the oil discharge pipeline 23.
The oil sludge recycling system provided by the invention realizes timely recycling treatment of the crude oil falling to the ground, the recycling rate reaches 99%, the oil sludge does not need to be transferred to an oil sludge treatment plant for unified treatment, the labor intensity of workers is reduced, the treatment time and cost are saved, and the safety and environmental protection risks are reduced. And has multiple functions, and can switch the flow according to the requirements.
Example 2:
on the basis of embodiment 1, the invention provides an oil sludge recycling system, wherein the treatment tank comprises a settling part 1 and an overflow part 2, the settling part 1 and the overflow part are separated by an overflow plate 5, a filter screen 21 is arranged above the settling part 1, a waste sludge outlet 22 is arranged at the lower side of the settling part 1, an oil discharge pipeline 23 is communicated with the overflow part 2, and an oil discharge valve 10, a centrifugal pump 11 and a check valve 12 are arranged on the oil discharge pipeline 23.
The treatment tank is divided into two parts, namely a settling part 1 and an overflow part 2, by an overflow plate 5. The process of recovering oil is: the oil sludge is poured or introduced into the treatment tank, firstly, the oil sludge passes through a filter screen 21 arranged above an overflow part 2, the filter screen 21 filters large-particle silt impurities, the oil sludge passing through the filter screen 21 enters a sedimentation part 1, then, an aqueous solution is added into the oil sludge for dilution and heating, the mixture is stirred and then kept stand for sedimentation to realize solid-liquid separation, a solid phase is discharged from a waste sludge outlet 22, a separated oil phase is on the uppermost layer, and finally, the oil overflows after passing through the top of an overflow plate 5 and enters the overflow part 2 for storage, so that the recovery treatment of the oil in the oil sludge is realized.
When the oil storage level is near the top of the spill plate 5, the discharge valve 10, the check valve 12 and the mix line valve 14 are opened, and the centrifugal pump 11 is opened to enter the mix line 29 or the hot wash line 24 for the next pass.
Example 3:
on the basis of embodiment 1, the invention provides an oil sludge recycling system, wherein the heating mechanism comprises a heating furnace 20, a heating furnace water outlet pipeline 30, a heating furnace water return pipeline 31 and a heating coil, the heating coil is arranged in a treatment tank, two ends of the heating coil are respectively communicated with the heating furnace water outlet pipeline 30 and the heating furnace water return pipeline 31, and a heating furnace outlet valve 8 and a circulating pump 7 are arranged on the heating furnace water outlet pipeline 30.
In the embodiment, the existing heating furnace 20 of the well site is utilized, hot water in the heating furnace 20 circulates in the coil pipe, so that on one hand, the purpose of heating oil sludge is achieved, the oil and the sludge are better separated, and on the other hand, the hot washing and paraffin removal operation of an oil well or a pipeline is implemented after the recovered oil phase is heated.
The hot washing pipeline 24 is communicated with the oil discharge pipeline 23 of the treatment tank, and the oil well can be subjected to hot washing and paraffin removal through switching of the process valve, and the pipeline can be subjected to hot washing and paraffin removal. As shown in fig. 1, the hot washing process is as follows:
opening an oil discharge valve 10, a check valve 12, a hot washing valve 13 and a casing valve 17 on a casing well washing pipeline 26, opening a centrifugal pump 11, enabling recovered oil phase stored in an overflow part 2 to flow out through an oil discharge pipeline 23 and the check valve 12, and enabling the recovered oil phase to enter a casing through the hot washing valve 13 and the casing valve 17 to carry out hot washing on an oil well;
the heated recovered oil flows through the single flow line 28 or the blend line 29 by opening the tubing blend valve 15 or tubing single flow valve 16, which can be used to thermally clean the pipeline from the well site to the crude metering transfer station.
Example 4:
the invention provides an oil sludge recycling system which comprises a treatment tank, wherein the treatment tank is respectively communicated with a mixing pipeline 29 and a hot washing pipeline 24 through an oil discharge pipeline 23, the treatment tank is connected with a heating mechanism, and the mixing pipeline 29 is communicated with a crude oil metering transfer station;
the hot washing pipeline 24 is communicated with a casing washing pipeline 26 and an oil production pipe 25 which are arranged at a wellhead in parallel through pipelines, the casing washing pipeline 26 is led into the casing, an outlet of the oil production pipe 25 is communicated with an oil outlet pipe 27 and a single-quantity pipeline 28 in parallel, the oil outlet pipe 27 of each oil well is communicated with a mixed pipeline 29, and valves are arranged on the hot washing pipeline 24, the casing washing pipeline 26, the single-quantity pipeline 28, the mixed pipeline 29 and the oil outlet pipe 27.
The single-measuring pipeline 28 is provided with a flowmeter, and the single-measuring pipeline 28 is communicated with the treatment tank through a pipeline.
When the oil sludge is not treated, the single-volume operation is carried out on the oil well in the well site through a switching process, as shown in figure 1, the process is as follows:
the valve (the hot washing valve 13) on the hot washing pipeline 24 and the valve (the oil pipe mixing valve 15) on the oil outlet pipe 27 are closed, the valve (the oil pipe single quantity valve 16) on the single quantity pipeline 28, the valve (the mixing pipeline valve 14) on the mixing pipeline 29 and the check valve 12 are opened, the centrifugal pump 11 is started, the oil well produced fluid enters the treatment tank after passing through the pipelines and the flow meter, and then enters the crude oil metering transfer station through the oil discharge pipeline 23 and the mixing pipeline 29. The production of a single well is metered by a flow meter.
Example 5:
on the basis of embodiment 1, this embodiment provides a sludge recycling system, and the overflow part 2 is provided with a chemical adding and stirring device.
The paraffin cleaner, the scale inhibitor and other medicines are directly added into the overflow tank and enter the oil well oil pipeline flow through the centrifugal pump 11, and the oil well or the oil pipeline is subjected to chemical adding operation to play a role in descaling and paraffin cleaning.
Example 6:
on the basis of embodiment 1, this embodiment provides an oil sludge recycling system, the treatment tank includes subside part 1 and overflow part 2, separate through overflow plate 5 between subside part 1 and the overflow part, the top of subside part 1 is equipped with filter screen 21, subside part 1 downside is equipped with waste mud outlet 22, oil discharge line 23 and overflow part 2 communicate, be equipped with oil drain valve 10, centrifugal pump 11 and check valve 12 on the oil discharge line 23.
The heating mechanism comprises a first heating part and a second heating part, wherein the first heating part and the second heating part are respectively arranged in the sedimentation part 1 and the overflow part 2.
The sedimentation part 1 and the overflow part 2 are both provided with heating parts, the sedimentation part 1 is heated to be beneficial to the separation of oil cement, the sedimentation part 1 is heated to be beneficial to the flow of crude oil, and the requirement of hot washing temperature is met.
Example 7:
on the basis of embodiment 2, this embodiment provides a fatlute recycle system, heating mechanism includes heating furnace 20, heating furnace outlet pipe line 30, heating furnace water return line 31 and heating coil, heating coil locates in the treatment tank, heating coil's both ends communicate with heating furnace outlet pipe line 30, heating furnace water return line 31 respectively, be equipped with heating furnace outlet valve 8 and circulating pump 7 on the heating furnace outlet pipe line 30.
The sedimentation part 1 and the overflow part 2 are respectively provided with a first heating coil 3 and a second heating coil 4, the heating furnace water outlet pipeline 30, the second heating coil 4, the first heating coil 3 and the heating furnace water return pipeline 31 are sequentially connected, the heating furnace water outlet pipeline 30 and the second heating coil 4 are connected through a first pipeline 18, and the first pipeline 18 is provided with an overflow part inlet valve 6;
the heating furnace water outlet pipeline 30 is communicated with the hot washing pipeline 24 through a second pipeline 19, the second pipeline 19 is provided with a heating furnace hot washing valve 9, and the first pipeline 18 and the second pipeline 19 are communicated with the heating furnace water outlet pipeline 30 in parallel. As shown in fig. 1.
When the oil well needs hot washing operation, the following washing or oil washing or washing first and then oil washing processes can be adopted:
oil washing: and (3) opening the oil discharge valve 10, the check valve 12, the hot washing valve 13 and the casing valve 17 on the casing well washing pipeline 26, opening the centrifugal pump 11, enabling the recovered oil phase stored in the overflow part 2 to flow out through the oil discharge pipeline 23 and the check valve 12, and enabling the recovered oil phase to enter the casing through the hot washing valve 13 and the casing valve 17 to carry out hot washing on the oil well.
In the process, water in the heating furnace 20 enters the heating coil II 4 and the heating coil I3 through the heating furnace water outlet pipeline 30, the circulating pump 7 and the overflow part inlet valve 6 to respectively heat the recovered oil and oil sludge mixture, and finally the water is circulated to the heating furnace 20 through the heating furnace water return pipeline 31.
Washing with water: closing the oil discharge valve 10 and the inlet valve 6 of the overflow part, opening the hot washing valve 9 of the heating furnace, the outlet valve 8 of the heating furnace, the check valve 12, the hot washing valve 13 and the sleeve valve 17 on the sleeve well washing pipeline 26, opening the centrifugal pump 11, then leading hot water into the hot washing pipeline 24, leading the hot water into the sleeve through the hot washing valve 13 and the sleeve valve 17, and carrying out hot washing on the oil well.
Example 8:
the embodiment provides a using method of an oil sludge recycling system, the oil sludge recycling system is adopted, oil sludge is led into a processing tank, recycled oil is obtained after processing and stored, the recycled oil flows out through an oil discharge pipeline 23, and finally, a crude oil metering transfer station is led into a mixing pipeline 29, or the oil enters a hot washing pipeline 24 through the oil discharge pipeline 23 to carry out hot washing on an oil well or a pipeline, so that the recycling of the oil in the oil sludge is realized, or when the oil sludge is not recycled, a single amount of pipelines are communicated with the processing tank, the yield of a single oil well is metered, the oil flows out through the oil discharge pipeline 23, and finally, the mixing pipeline 29 is led into the crude oil metering transfer station.
The invention not only can recover oil, but also has multiple functions of hot washing, paraffin removal and operation.
Example 9:
on the basis of embodiment 8, this embodiment provides a method for using a sludge recycling system, and a treatment process of introducing sludge into a treatment tank is as follows: fatlute lets in the processing jar, at first filters the silt impurity of large granule by filter screen 21, and fatlute through filter screen 21 gets into subsides part 1, then adds water or aqueous solution dilution while stirring, subsides under the heating condition, and the subsides mud of lower part is discharged by useless mud export 22, and after the oil-water mixture layering of upper portion, the oil on top layer is overflowed to overflow part 2 by overflow board 5 and is stored.
Compared with the existing oil sludge recovery method, the method has the advantages of simple treatment process, high recovery rate and low cost.
Example 10:
on the basis of embodiment 9, this embodiment provides a method for using the sludge recycling system, when the oil well or the pipeline needs to be hot-washed, the valve on the mixing pipeline 29 is closed, the valve on the oil discharge pipeline 23, the valve on the hot wash pipeline 24 and the valve on the casing well-wash pipeline 26 are opened, the centrifugal pump 11 is opened, the oil stored in the overflow part 2 is heated by the heating mechanism, and then flows into the hot wash pipeline 24 through the oil discharge pipeline 23 to enter the casing to perform hot-wash on the oil well, or enters the oil well pipeline to perform hot-wash on the pipeline between the well site and the crude oil metering transfer station.
The specific process is as follows,
as shown in fig. 1, when the oil well needs to be hot-washed, the valve on the mixing pipeline 29 is closed, the oil discharge valve 10, the check valve 12, the valve on the hot-washing pipeline 24 and the casing valve 17 on the casing well-washing pipeline 26 are opened, the centrifugal pump 11 is started, the oil stored in the overflow part 2 is heated by the heating mechanism, flows into the hot-washing pipeline 24 through the oil discharge pipeline 23 and then enters the casing to carry out hot-washing on the oil well;
and opening the oil pipe single-quantity valve 16 of the single-quantity pipeline 28 or the oil pipe mixing valve 15 on the mixing pipeline 29, and performing hot washing and wax removal on the pipeline between the well site and the crude oil metering transfer station through the single-quantity pipeline 28 or the mixing pipeline 29 by the heated oil.
When the output of a single oil well needs to be measured, the valve on the hot washing pipeline 24 and the valve on the oil outlet pipe 27 are closed, the valve on the single-quantity pipeline 28, the valve on the mixing pipeline 29 and the check valve 12 are opened, the centrifugal pump 11 is started, and the output fluid of the oil well enters a treatment tank through pipelines and flow meters and then enters a crude oil measuring and transferring station through the oil discharge pipeline 23 and the mixing pipeline 29.
In conclusion, the invention can recover oil, has multiple functions of hot washing, paraffin removal, chemical addition and single-amount operation, is economic, environment-friendly and practical, effectively collects and recycles oil sludge, recovers petroleum resources and reduces treatment cost.
It will be understood by those of ordinary skill in the art that the foregoing embodiments are specific examples for carrying out the invention, and that various changes in form and details may be made therein without departing from the spirit and scope of the invention in practice.
Claims (10)
1. The utility model provides a fatlute recycle system, includes the processing jar, its characterized in that: the processing jar communicates mixing line (29) and hot wash line (24) respectively through oil discharge pipeline (23), the processing jar is connected with heating mechanism, mixing line (29) intercommunication crude oil measurement connects the station of changeing, hot wash line (24) intercommunication oil well pipeline, all be equipped with the valve on oil discharge pipeline (23), mixing line (29) and the hot wash line (24).
2. The sludge recycling system according to claim 1, wherein: the treatment tank comprises a sedimentation part (1) and an overflow part (2), the sedimentation part (1) and the overflow part are separated through an overflow plate (5), a filter screen (21) is arranged above the sedimentation part (1), a waste sludge outlet (22) is arranged on the lower side of the sedimentation part (1), an oil discharge pipeline (23) is communicated with the overflow part (2), and an oil discharge valve (10), a centrifugal pump (11) and a check valve (12) are arranged on the oil discharge pipeline (23).
3. The sludge recycling system according to claim 1, wherein: the oil well pipeline comprises a casing flushing pipeline (26) and an oil production pipe (25), the casing flushing pipeline (26) and the oil production pipe (25) are communicated with the hot flushing pipeline (24) in parallel, the casing flushing pipeline (26) is communicated into the casing, an outlet of the oil production pipe (25) is communicated with an oil outlet pipe (27) and a single-quantity pipeline (28) in parallel, each oil well oil outlet pipe (27) is communicated with a mixed pipeline (29), and valves are arranged on the hot flushing pipeline (24), the casing flushing pipeline (26), the single-quantity pipeline (28), the mixed pipeline (29) and the oil outlet pipe (27).
4. The sludge recycling system according to claim 1, wherein: heating mechanism includes heating furnace (20), heating furnace outlet conduit line (30), heating furnace water return line (31) and heating coil, heating coil locates in the processing jar, heating coil's both ends communicate with heating furnace outlet conduit line (30), heating furnace water return line (31) respectively, be equipped with heating furnace outlet valve (8) and circulating pump (7) on heating furnace outlet conduit line (30).
5. The sludge recycling system according to claim 1, wherein: the single-quantity pipeline (28) is provided with a flowmeter, and the single-quantity pipeline (28) is communicated with the treatment tank through a pipeline.
6. The sludge recycling system according to claim 2, wherein: the overflow part (2) is provided with a dosing and stirring device.
7. The sludge recycling system according to claim 4, wherein: the sedimentation part (1) and the overflow part (2) are respectively provided with a heating coil I (3) and a heating coil II (4), the heating furnace water outlet pipeline (30), the heating coil II (4), the heating coil I (3) and a heating furnace water return pipeline (31) are sequentially connected, the heating furnace water outlet pipeline (30) and the heating coil II (4) are connected through a pipeline I (18), and the pipeline I (18) is provided with an overflow part inlet valve (6);
the heating furnace water outlet pipeline (30) is communicated with the hot washing pipeline (24) through a second pipeline (19), a heating furnace hot washing valve (9) is arranged on the second pipeline (19), and the first pipeline (18) and the second pipeline (19) are communicated with the heating furnace water outlet pipeline (30) in parallel.
8. The method of using the sludge recycling system according to any one of claims 1 to 7, wherein: the oil sludge is led into a treatment tank, recovered oil is obtained after treatment and stored, the recovered oil flows out through an oil discharge pipeline (23), and finally the oil is led into a crude oil metering transfer station through a mixed pipeline (29), or enters a hot washing pipeline (24) through the oil discharge pipeline (23) to carry out hot washing on an oil well or a pipeline, so that the oil in the oil sludge is recycled, or when the oil sludge is not recovered, a single amount of pipeline is communicated with the treatment tank, the yield of a single oil well is metered, the oil flows out through the oil discharge pipeline (23), and finally the oil is led into the crude oil metering transfer station through the mixed pipeline (29).
9. The use method of the sludge recycling system according to claim 8, wherein the treatment process of introducing the sludge into the treatment tank is as follows: the oil sludge is introduced into the treatment tank, large-particle silt impurities are firstly filtered by the filter screen (21), the oil sludge passing through the filter screen (21) enters the sedimentation part (1), then water or aqueous solution is added for dilution and stirring, sedimentation is carried out under the heating condition, the sedimentation sludge at the lower part is discharged from the waste sludge outlet (22), and after the oil-water mixture at the upper part is layered, the oil on the surface layer overflows to the overflow part (2) by the overflow plate (5) for storage.
10. The use method of the sludge recycling system according to claim 8, wherein: when the oil well or the pipeline needs to be subjected to hot washing, a valve on a mixing pipeline (29) is closed, a valve on an oil discharge pipeline (23), a valve on a hot washing pipeline (24) and a valve on a casing well washing pipeline (26) are opened, a centrifugal pump (11) is started, oil stored in an overflow part (2) is heated by a heating mechanism, flows into the hot washing pipeline (24) through the oil discharge pipeline (23), enters a casing to perform hot washing on the oil well, or enters an oil well pipe to perform hot washing on the pipeline between the well site and a crude oil metering transfer station;
when the yield of a single oil well needs to be measured, a valve on a hot washing pipeline (24) and a valve on an oil outlet pipe (27) are closed, a valve on a single measuring pipeline (28), a valve on a mixing pipeline (29) and a check valve (12) are opened, a centrifugal pump (11) is started, and the produced fluid of the oil well enters a treatment tank through a pipeline and a flowmeter and then enters a crude oil measuring transfer station through an oil discharge pipeline (23) and the mixing pipeline (29).
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| CN202010419030.1A CN111635096A (en) | 2020-05-18 | 2020-05-18 | Oil sludge recycling system and method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113958304A (en) * | 2021-10-25 | 2022-01-21 | 中国石油大学(华东) | Well head oil production system for mechanical oil production |
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