CN104925990A - Skid-mounted device for circulating treatment of oil field well flushing flowback fluid and circulating treatment method for oil field well flushing flowback fluid - Google Patents
Skid-mounted device for circulating treatment of oil field well flushing flowback fluid and circulating treatment method for oil field well flushing flowback fluid Download PDFInfo
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- CN104925990A CN104925990A CN201510299022.7A CN201510299022A CN104925990A CN 104925990 A CN104925990 A CN 104925990A CN 201510299022 A CN201510299022 A CN 201510299022A CN 104925990 A CN104925990 A CN 104925990A
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Abstract
The invention relates to a skid-mounted device for circulating treatment of oil field well flushing flowback fluid and a circulating treatment method for oil field well flushing flowback fluid. The skid-mounted device comprises three parts, namely a buffering sedimentation pry, an air-floatation pry and a filtering pry, wherein the buffering sedimentation pry and the air-floatation pry are connected through the water outlet of the buffering sedimentation pry and the water inlet of the air-floatation pry; the air-floatation pry and the filtering pry are connected through the water outlet of the air-floatation pry and the water inlet of the filtering pry; the pries are connected through pipelines; all the devices, pipelines, valves, meters and control systems are integrated on the pries, and are fixed by a steel structure and a platform. According to the invention, the treatment pries are connected through quick connectors, are convenient and fast to disassemble and assemble, and can be flexibly arranged according to the treatment site situation; the skid-mounted device is high in integration degree, compact in structure, small in occupied area, high in automation degree, simple to operate, reliable in performance, convenient to construct, short in period, stable to operate and efficient in treatment, is integrally prefabricated in a skid-mounted manner, and can implement vehicle-mounted mobile operation; the water quality of effluent treated by the device can reach a reinjection water standard.
Description
Technical field
The invention belongs to oilfield wastewater treatment technology field, be specifically related to a kind of skid-mounted device and the treatment process of returning discharge opeing circular treatment for oil field flushing.
Background technology
Water injection well in oil fields must carry out regular well-flushing, this is one of the water-absorbent, raising flood effectiveness, the important measures reducing oil layer pollution that keep stratum, but the discharge opeing of returning produced in washing well process contains the pollutents such as a large amount of silt particle, suspended substance, oils, very large source of pollution, must carry out process up to standard after could discharge or re-injection.
Well-flushing returns discharge opeing process and has water injection well in oil field distribution dispersion, and well site of oil field road conditions are poor, and main equipment is come in and gone out inconvenient, the features such as well-flushing returns discharge opeing complicated component, and instantaneous aquifer yield is large.At present, the treatment process returning discharge opeing is mainly contained: build special flushing fluid recovery line or tank car roping, focus on; Enter neighbouring oil gathering system; Movable mounting treatment in situ etc.Wherein build special recovery line initial cost high, pipeline utilization ratio is low.Tank car roping, to focus on workload large, and processing costs is higher.Enter load and intractability that neighbouring oil gathering system can increase gathering system, affect the normal operation of oil gathering system.Movable mounting treatment in situ maneuverability, processing efficiency is high, but there is completion time of project long, the problem such as equipment is scattered, occupation of land is large, running maintenance is inconvenient, and also needs further raising technically.
For above problem, the efficient portable skid treatment unit of Development of Novel, returns discharge opeing process on the spot to reinjected water water quality standard, is then recycled into water injection well by well-flushing, realize circulation well cleanup, treat that individual well well-flushing is complete and device is transferred to flexibly next and need well-flushing place.Can solve water injection well distribution dispersion, main equipment is come in and gone out the problems such as inconvenience, and can reduce again well-flushing and return discharge opeing and arrange the problem of environmental pollution brought outward, greatly improve the utilization ratio of water resources, protection oil field oilbearing stratum energy, maintains sand pressure and improve tar productivity.
Summary of the invention
The feature of discharge opeing row is returned for oil field flushing, with the deficiency of existing treatment unit, method, the invention provides a kind of sledge-borne type high-efficient treatment device, produce the suspended substance, oils, silt particle and other pollutent that return in discharge opeing, dependable performance when effectively can remove oil field flushing operation, level of automation is high, process is efficient, after process, effluent quality can reach reinjected water standard, is again recycled in water injection well, realizes circulation well cleanup; And by all devices, pipeline, instrument, valve and control system integration on sled, overall skid-mounted is prefabricated, construct convenient, integrated level is high, compact construction, floor space is little, achieves intensive, miniaturization and skid that oil field flushing returns discharge opeing treatment unit, solve that the prior-art devices device context completion time of project is long, equipment is scattered, floor space is large, level of automation is low, the problems such as water quality treatment is not up to standard.For oilfield engineering fast, low cost, high-level efficiency, less energy-consumption Development control area water technology guarantee is provided.
The technical solution used in the present invention is as follows:
A kind of oil field flushing returns discharge opeing circular treatment skid-mounted device, described skid-mounted device by cushioning sedimentation sled, air supporting is prized, filter sled three parts forms; Prize the mouth of a river (4) by buffering sedimentation between buffering sedimentation sled and air supporting sled and air supporting sled water-in (16) connects, air supporting is prized and filter prize between prize the mouth of a river (17) by air supporting and filter and prize water-in (20) and be connected.
Buffering sedimentation sled comprises buffering subsider (1), PAC dosing tank (2) and lift pump (3); Buffering subsider top is placed with lift pump motor and PAC dosing tank, and it is inner that lift pump pump shaft and rising pipe are all arranged at buffering subsider.
Air supporting is prized to comprise and is revolved branch mailbox (5), air dissolved pump (6), volume pump (7), PAM dosing tank (8), agitator (9), float tank (10), dross box (11), scum silica frost pump (12), water pump (13), slag scraper (14), dissolved air release (15).Wherein revolve the angle end that branch mailbox (5) is positioned at air supporting sled, bottom case, be provided with agitator (9).To revolve branch mailbox (5) for basic point, float tank (10) is positioned at its side and, float tank (10) bottom is provided with dissolved air release (16), and top is provided with slag scraper (15).Be mechanical floor in the bottom of float tank (10), be furnished with PAM dosing tank (8), volume pump (7), air dissolved pump (6), water pump (13), scum silica frost pump (12) successively.Be dross box (11) in the side of float tank (10).Described branch mailbox (5), float tank (10) and the dross box (11) of revolving all is formed by sled body steel construction and steel plate partition.
Prize body steel construction and its size of steel plate and relative position to adjust accordingly according to different treatment situation.
Filter sled and comprise coarse filter (18) and accurate filter (19); Coarse filter (18) and accurate filter (19) respectively arrange 2, are arranged in the both sides of steel platform.
A kind of oil field flushing of the present invention returns discharge opeing circulation process method, adopt sedimentation, to revolve point, air supporting and filtration combination method, well-flushing returns discharge opeing water and first enters buffering sedimentation sled, realize preliminary oily water separation and solid-liquid separation in buffering subsider after, water outlet promotes to enter by lift pump revolves branch mailbox, utilize and revolve branch mailbox and think to carry out centrifugation to the solid particulate in waste water by the centrifugal force that interior agitator high speed rotating produces; Revolve branch mailbox water outlet gravity flow and enter float tank, air supporting effect is utilized in float tank, suspended substance in further removal waste water and oils, float tank water outlet delivers to filtration sled by water pump pressurization after being collected by filtered water tank, through the two-stage filtration of coarse filter and accurate filter, realize retaining different size particles material, filter water outlet and reach reinjected water standard; The scum silica frost produced in air supporting process, is removed by slag scraper, collects and enters dross box, by scum silica frost pump, is regularly discharged by scum silica frost and focuses on.
Air supporting sled adopts two-stage air supporting, be provided with 2 grades of float tanks, dissolved air release is provided with in float tank, in waste water in float tank, pressured gas liquid mixed solution is passed into by air dissolved pump, mixed solution discharges through dissolved air release again, in waste water, form a large amount of micro-bubble, realize high efficiency oil-water by air supporting effect and be separated.
Each process sled equipment room of the present invention is connected by pipeline, and all devices, pipeline, valve, instrument and control system are all integrated on sled, are fixed by steel construction and platform.Connected by rapid-acting coupling between each process sled, dismountable is convenient, can according to process field condition flexible arrangement.This skid-mounted device integrated level is high, compact construction, floor space are little; Level of automation is high, simple to operate, dependable performance; Overall skid-mounted is prefabricated, it is convenient to construct, the cycle is short; Stable, process is efficient, can vehicle-mounted floating operation; Device process effluent quality reaches reinjected water standard.
Accompanying drawing explanation
Fig. 1 is present invention process general flow chart;
Fig. 2 a is that the present invention cushions sedimentation sled structural front view;
Fig. 2 b is that the present invention cushions sedimentation sled structure vertical view;
Fig. 2 c is that the present invention cushions sedimentation sled structure shaft side figure;
Fig. 3 a is air supporting of the present invention sled structural front view;
Fig. 3 b is air supporting of the present invention sled structure vertical view;
Fig. 3 c is air supporting of the present invention sled structure shaft side figure;
Fig. 4 a is that the present invention filters sled structural front view;
Fig. 4 b is that the present invention filters sled structure vertical view.
Wherein: 1. cushion subsider, 2.PAC dosing tank, 3. lift pump, 4. cushion sedimentation and prize the mouth of a river, 5. revolve branch mailbox, 6. air dissolved pump, 7. volume pump, 8.PAM dosing tank, 9. agitator, 10. float tank, 11. dross boxs, 12. scum silica frost pumps, 13. water pumps, 14. slag scrapers, 15. dissolved air releases, 16. air supporting sled water-ins, 17. air supportings prize the mouth of a river, 18. coarse filters, 19. accurate filters, 20. filter sled water-in, and 21. filtrations prize the mouth of a river.
Embodiment
Below in conjunction with drawings and Examples, the present invention is described in further details.
As shown in Figure 1, this skid-mounted device by cushion sedimentation sled, air supporting prize, filter sled three parts form.
As shown in Fig. 2 a, Fig. 2 b, Fig. 2 c, buffering sedimentation sled equipment layout comprises buffering subsider (1), PAC dosing tank (2) and lift pump (3), wherein cushion subsider top and be placed with lift pump motor and PAC dosing tank, it is inner that lift pump pump shaft and rising pipe are all arranged at buffering subsider.
As shown in Fig. 3 a, Fig. 3 b, Fig. 3 c, air supporting sled equipment layout comprises revolves branch mailbox (5), air dissolved pump (6), volume pump (7), PAM dosing tank (8), agitator (9), float tank (10), dross box (11), scum silica frost pump (12), water pump (13), slag scraper (14), dissolved air release (15).Wherein revolve the angle end that branch mailbox (5) is positioned at air supporting sled, bottom case, be provided with agitator (9).To revolve branch mailbox (5) for basic point, float tank (10) is positioned at its side and, float tank (10) bottom is provided with dissolved air release (16), and top is provided with slag scraper (15).Be mechanical floor in the bottom of float tank (10), be furnished with PAM dosing tank (8), volume pump (7), air dissolved pump (6), water pump (13), scum silica frost pump (12) successively.Be dross box (11) in the side of float tank (10).Described branch mailbox (5), float tank (10) and the dross box (11) of revolving all is formed by sled body steel construction and steel plate partition, and its size and relative position can adjust accordingly according to different treatment situation.
As shown in Fig. 4 a, Fig. 4 b, filter sled equipment layout and comprise coarse filter (18) and accurate filter (19), coarse filter (18) and accurate filter (19) respectively arrange 2, are arranged in the both sides of steel platform.
Prize the mouth of a river (4) by buffering sedimentation between buffering sedimentation sled and air supporting sled and air supporting sled water-in (16) connects, air supporting sled and filtering prizes the mouth of a river (17) by air supporting between prizing and filter and prize water-in (20) and be connected, the well-flushing after process returns discharge opeing and prizes the mouth of a river (21) from filtration and discharge.Each Link Port is equipped with rapid-acting coupling above, and steel pipe or flexible pipe can be adopted to connect fast, the relative position of each process sled, can according to process field condition flexible arrangement.Process unit in this patent protection example also protects the process system apparatus of the different size of the same process of other treatment capacities simultaneously.
This device adopts sedimentation, to revolve point, air supporting and filtration combination technique, during work: well-flushing returns discharge opeing water and first enters buffering sedimentation sled, in buffering subsider (1) by particles settling effect and water oil density poor, macrobead solid matter is deposited to bottom land, oily substance floats to the water surface, realizes preliminary oily water separation and solid-liquid separation.Buffering subsider (1) water outlet promotes to enter by lift pump (3) revolves branch mailbox (5), revolve in branch mailbox (5) and be provided with agitator (9), the centrifugal force utilizing agitator (9) high speed rotating to produce, carries out centrifugation to the solid particulate in waste water.Add PAM, idetified separation effect by PAM dosing tank (8) and volume pump (7) to revolving in branch mailbox (5) simultaneously.Revolve branch mailbox (5) water outlet gravity flow and enter float tank (10), dissolved air release (15) is provided with in float tank (10), in float tank (10) interior waste water, pressured gas liquid mixed solution is passed into by air dissolved pump (6), mixed solution discharges through dissolved air release (15) again, in waste water, form a large amount of micro-bubble, realize high efficiency oil-water by air supporting effect and be separated.Waste water after air-flotation process is pressurizeed to deliver to by water pump (13) and filters sled, through the two-stage filtration of coarse filter (18) and accurate filter (19), realize retaining different size particles material, guarantee that filtering water outlet reaches reinjected water standard.The scum silica frost produced in air supporting process, is removed by slag scraper (14), collects and enters dross box (11), by scum silica frost pump (12), is regularly discharged by scum silica frost and focuses on.
Apparatus of the present invention are returned discharge opeing to certain oil field flushing and are carried out test in place process, treatment capacity 40m
3/ h, testing data is in table 1.
Table 1
| Water-quality guideline | Petroleum-type (mg/L) | Suspended substance (mg/L) | Median particle diameter (μm) |
| Reinjected water standard | ＜5 | ＜10 | ＜3 |
| Water inlet | ＜2000 | ＞500 | ＜80 |
| Water outlet | ＜4 | ＜8 | ＜3 |
Duration of test plant running is stablized, and water outlet indices all reaches reinjected water standard after treatment, and the clearance of suspended substance and petroleum-type reaches 99% and 97% respectively.Other treatment process devices on year-on-year basis, this skid-mounted device integrated level is high, compact construction, floor space are little; Construct convenient, the cycle is short; Stable, process is efficient.
The above; only be used for explaining and the present invention is described; not in order to limit the present invention; within the spirit and principles in the present invention; anyly be familiar with those skilled in the art in the technical scope that the present invention discloses; any amendment of making, replacement and improvement, all should be encompassed within protection scope of the present invention.
Claims (7)
1. oil field flushing returns a discharge opeing circular treatment skid-mounted device, it is characterized in that described skid-mounted device by cushion sedimentation sled, air supporting prize, filter sled three parts form; Prize the mouth of a river (4) by buffering sedimentation between buffering sedimentation sled and air supporting sled and air supporting sled water-in (16) connects, air supporting is prized and filter prize between prize the mouth of a river (17) by air supporting and filter and prize water-in (20) and be connected.
2. device as claimed in claim 1, is characterized in that buffering sedimentation sled comprises buffering subsider (1), PAC dosing tank (2) and lift pump (3); Buffering subsider top is placed with lift pump motor and PAC dosing tank, and it is inner that lift pump pump shaft and rising pipe are all arranged at buffering subsider.
3. device as claimed in claim 1, is characterized in that air supporting sled comprises and revolves branch mailbox (5), air dissolved pump (6), volume pump (7), PAM dosing tank (8), agitator (9), float tank (10), dross box (11), scum silica frost pump (12), water pump (13), slag scraper (14), dissolved air release (15); Wherein revolve the angle end that branch mailbox (5) is positioned at air supporting sled, bottom case, be provided with agitator (9); To revolve branch mailbox (5) for basic point, float tank (10) is positioned at its side and, float tank (10) bottom is provided with dissolved air release (16), and top is provided with slag scraper (15); Be mechanical floor in the bottom of float tank (10), be furnished with PAM dosing tank (8), volume pump (7), air dissolved pump (6), water pump (13), scum silica frost pump (12) successively.Be dross box (11) in the side of float tank (10); Described branch mailbox (5), float tank (10) and the dross box (11) of revolving all is formed by sled body steel construction and steel plate partition.
4. device as claimed in claim 1, is characterized in that filtering sled comprises coarse filter (18) and accurate filter (19); Coarse filter (18) and accurate filter (19) respectively arrange 2, are arranged in the both sides of steel platform.
5. the device as described in Claims 1 to 4, it is characterized in that each process sled equipment room is connected by pipeline, all devices, pipeline, valve, instrument and control system are all integrated on sled, are fixed by steel construction and platform; Rapid-acting coupling is adopted to connect by pipe joint between each process sled.
6. an oil field flushing returns discharge opeing circulation process method, it is characterized in that adopting sedimentation, to revolve point, air supporting and filtration combination method, well-flushing returns discharge opeing water and first enters buffering sedimentation sled, realize preliminary oily water separation and solid-liquid separation in buffering subsider after, water outlet promotes to enter by lift pump revolves branch mailbox, utilize and revolve branch mailbox and think to carry out centrifugation to the solid particulate in waste water by the centrifugal force that interior agitator high speed rotating produces; Revolve branch mailbox water outlet gravity flow and enter float tank, float tank water outlet is pressurizeed to deliver to by water pump after being collected by filtered water tank and is filtered sled, through the two-stage filtration of coarse filter and accurate filter, realizes retaining different size particles material, filters water outlet and reach reinjected water standard; The scum silica frost produced in air supporting process, is removed by slag scraper, collects and enters dross box, by scum silica frost pump, is regularly discharged by scum silica frost and focuses on.
7. method as claimed in claim 6, it is characterized in that air supporting sled adopts two-stage air supporting, be provided with 2 grades of float tanks, dissolved air release is provided with in float tank, in waste water in float tank, pressured gas liquid mixed solution is passed into by air dissolved pump, mixed solution through dissolved air release release, forms a large amount of micro-bubble again in waste water, realizes high efficiency oil-water be separated by air supporting effect.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510299022.7A CN104925990A (en) | 2015-06-03 | 2015-06-03 | Skid-mounted device for circulating treatment of oil field well flushing flowback fluid and circulating treatment method for oil field well flushing flowback fluid |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510299022.7A CN104925990A (en) | 2015-06-03 | 2015-06-03 | Skid-mounted device for circulating treatment of oil field well flushing flowback fluid and circulating treatment method for oil field well flushing flowback fluid |
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| CN104925990A true CN104925990A (en) | 2015-09-23 |
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| CN201510299022.7A Pending CN104925990A (en) | 2015-06-03 | 2015-06-03 | Skid-mounted device for circulating treatment of oil field well flushing flowback fluid and circulating treatment method for oil field well flushing flowback fluid |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109502784A (en) * | 2018-11-17 | 2019-03-22 | 江苏汇通环保设备有限公司 | A kind of sledge removable water integrating device |
| CN112110561A (en) * | 2019-06-20 | 2020-12-22 | 中国石油天然气股份有限公司 | Integrated treatment system and treatment method for flushing flowback liquid |
| CN113603186A (en) * | 2021-08-17 | 2021-11-05 | 中海石油（中国）有限公司天津分公司 | Oil-water separation and purification treatment method and structure for offshore oilfield return drainage liquid |
| CN116177794A (en) * | 2023-02-01 | 2023-05-30 | 大庆市普罗石油科技有限公司 | Single well produced liquid reinjection skid-mounted device and produced liquid treatment method |
-
2015
- 2015-06-03 CN CN201510299022.7A patent/CN104925990A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109502784A (en) * | 2018-11-17 | 2019-03-22 | 江苏汇通环保设备有限公司 | A kind of sledge removable water integrating device |
| CN112110561A (en) * | 2019-06-20 | 2020-12-22 | 中国石油天然气股份有限公司 | Integrated treatment system and treatment method for flushing flowback liquid |
| CN113603186A (en) * | 2021-08-17 | 2021-11-05 | 中海石油（中国）有限公司天津分公司 | Oil-water separation and purification treatment method and structure for offshore oilfield return drainage liquid |
| CN116177794A (en) * | 2023-02-01 | 2023-05-30 | 大庆市普罗石油科技有限公司 | Single well produced liquid reinjection skid-mounted device and produced liquid treatment method |
| CN116177794B (en) * | 2023-02-01 | 2024-04-09 | 大庆市普罗石油科技有限公司 | Single well produced liquid reinjection skid-mounted device and produced liquid treatment method |
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