CN104341052A - Skid-mounted multifunctional integral oil field water treatment device - Google Patents
Skid-mounted multifunctional integral oil field water treatment device Download PDFInfo
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- CN104341052A CN104341052A CN201310338278.5A CN201310338278A CN104341052A CN 104341052 A CN104341052 A CN 104341052A CN 201310338278 A CN201310338278 A CN 201310338278A CN 104341052 A CN104341052 A CN 104341052A
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- tank
- oil
- pipe valve
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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
- C02F9/00—Multistage treatment of water, waste water or sewage
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/001—Processes for the treatment of water whereby the filtration technique is of importance
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2301/00—General aspects of water treatment
- C02F2301/08—Multistage treatments, e.g. repetition of the same process step under different conditions
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- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Filtration Of Liquid (AREA)
Abstract
The invention discloses a skid-mounted multifunctional integral oil field water treatment device. The device is characterized in that a cable hanger, a pressure reducing member, a lifting pump, an oil-sand-liquid separating tank, a rough treatment tank, a back washing pump, a fine treatment tank, a flow meter, a filter material circulating pump, an air compressor, an air storage tank, an electric control cabinet and a connecting pipe valve are integrated and arranged on a pry or a vehicle. The device is designed to treat at three stages; the first-stage oil-sand-liquid separating tank is used for separating floating oil, sand and oil; the second-stage rough treatment tank is used for separating dispersed oil, liquid and large suspension particles; and the third-stage fine treatment tank is used for separating emulsified oil, liquid and fine particles. After three-stage treatment, liquid meets the recycling requirement after well drilling, acidifying, fracturing and well flushing. In a running process, only air is added without adding medicaments, so that the device has the advantages of prevention of pollution to oil and liquid, high separating speed, good effect and low running cost, and can be widely applied to treatment of well drilling waste liquid, acidifying and fracturing flow-back liquid and oil-water well flushing fluid.
Description
Art
The present invention relates to a kind of skid Multifunctional integrated oil-field water treatment unit, especially the skid Multifunctional integrated oil-field water treatment unit of oil drilling waste liquid, acidifying, fracturing outlet liquid and oil and water well measure flushing fluid process reuse up to standard or outer row.
Background technology
Containing a large amount of organic chemicalss in oil drilling waste liquid, acidifying, fracturing outlet liquid and oil and water well measure flushing fluid, there are high cod values, high stability, full-bodied three high features, on-the-spot adopt digs pond more, above liquid is entered air-dry by evaporation in pond after the mode process of burying, but this method is large to the pollution of environment, is the key link of contaminate environment in oilfield development process.
For head it off, after current oil field many employings engineering completes, again waste liquid of drilling, acidifying, fracturing outlet liquid and oil and water well measure flushing fluid are recycled to sewage works process, the amount that this method not only reclaims is large, freight charges are high, and it is large to the impact of Sewage treatment systems, make the water quality entire lowering after sewage works process, destroy the operation up to standard of sewage works.
Summary of the invention
In order to overcome the above deficiency existed when waste liquid of drilling, acidifying, fracturing outlet liquid and oil and water well measure flushing fluid are recycled to sewage works process, the invention provides a kind of skid Multifunctional integrated oil-field water treatment unit of novel texture, this device can not only reduce the freight, waste liquid of drilling after process, acidifying, fracturing outlet liquid and oil and water well measure flushing fluid are reused, above liquid is turned waste into wealth, thus save clear water resource and consumption of chemical agent, can reduce again the pollution to environment, be achieve many things at one stroke.
In order to achieve the above object, technical scheme of the present invention is: cable turntable, pressure relief mechanism, lift pump, oil-sand liquid separating tank, bulk processing tank, backwashing pump, carefully treatment tank, under meter, filtrate recycle pump, air compressor machine, gas-holder, electrical control cubicles and connection pipe valve composition are integrally placed on a sled block or on a car, is convenient to drilling well, acidifying, pressure break and the mobile use of oil and water well measure well-flushing construction.
As a further improvement on the present invention, oil-sand liquid separating tank is vertical circular tank, tank cylinder top tangent line is provided with inside vortex producer, annular space in inside vortex producer is equipped with convex round body shape deoiling filler, is provided with sand-precipitating tube, is provided with sand setting passage between tank cylinder and sand-precipitating tube in lower in tank cylinder, Guan Di center is provided with collection sand removing cylinder, collection sand removing cylinder side is provided with the sediment outflow mouth of pipe, and tank deck center is provided with the fluid mouth of pipe, and fluid mouth of pipe periphery is provided with receives the dual-purpose mouth of pipe of oil exhaust.
As of the present invention improvement be further again, bulk processing tank and thin treatment tank are identical vertical circular jar structure, water outlet, back flushing water inlet, emptying three mouth of pipe is provided with at the bottom of tank, tank cylinder bottom is provided with the discharging mouth of pipe, manhole is provided with in the middle part of tank cylinder, manhole top is provided with the charging mouth of pipe, and tank deck center is provided with the dual-purpose mouth of pipe of feed liquor blowdown, and feed liquor blowdown dual-purpose mouth of pipe periphery is provided with receives the dual-purpose mouth of pipe of oil exhaust; In tank, bottom is provided with lower filter plate, and lower filter plate is provided with filtrate, is provided with filter plate above filtrate, and upper filter plate upper center is provided with outer vortex generator, and the periphery of outer vortex generator is provided with spill round body shape deoiling filler; Upper and lower filter plate in bulk processing tank is coarse filtration plate, and filtrate is coarse media; Upper and lower filter plate in thin treatment tank is fine filtration plate, and filtrate is fine filtering material; Two tanks share a filtrate recycle pump and a backwashing pump.
The invention has the advantages that little, lightweight, the easy skid or vehicle-mounted of the volume of device, be convenient to on-the-spot migration use, device is go out into three, air not adding medicine is only added in operational process, technique is simple, velocity of separation is fast, effective, drilling fluid, acidifying, the fracturing outlet liquid of recovery and oil and water well measure flushing fluid purity is high, conveniently use.
Accompanying drawing explanation
Below in conjunction with accompanying drawing, the present invention is further detailed explanation.
Fig. 1 is the vertical view of invention;
Fig. 2 is the front view of invention;
Fig. 3 is the rear view of invention;
Fig. 4 is the shape assumption diagram of oil-sand liquid separating tank;
Fig. 5 is the cut-away view of oil-sand liquid separating tank;
Fig. 6 is the shape assumption diagram of thick, thin treatment tank;
Fig. 7 is the cut-away view of thick, thin treatment tank.
1. cable turntables in figure, 2. pressure relief mechanism, 3. lift pump, 4. oil-sand liquid separating tank, 5. bulk processing tank, 6. backwashing pump, 7. thin treatment tank, 8. under meter, 9. filtrate recycle pump, 10. air compressor machine, 11. gas-holder, 12. electrical control cubicles, 13. fluid headers, 14. thin treatment tank discharging pipe valves, 15. thin treatment tank fluid pipe valves, 16. thin treatment tank back flushing water inlet pipe valves, 17. thin treatment tank feed pipe valve, 18. bulk processing tank feed pipe valve, 19. bulk processing tank back flushing water inlet pipe valves, 20. bulk processing tank discharging pipe valves, 21. bulk processing tank emptying pipe valves, 22. air compressor machines are given vent to anger pipe valve, the dual-purpose pipe valve of oil exhaust received by 23. thin treatment tanks, the dual-purpose pipe valve of 24. thin treatment tank feed liquor blowdown, the dual-purpose pipe valve of oil exhaust received by 25. bulk processing tanks, the dual-purpose pipe valve of 26. bulk processing tank feed liquor blowdown, 27. oil-sand liquid separating tank fluid pipe valves, the dual-purpose pipe valve of oil exhaust received by 28. oil-sand liquid separating tanks, 29. lift pump fluid pipe valves, 30. oil-sand liquid separating tank feed liquor pipe valves, 31. gas-holder are given vent to anger pipe valve, 32. pressure relief mechanism fluid inlets, 33. lift pump fluid inlets, 34. oil-sand liquid separating tank air inlet pipe valves, the dual-purpose pipe valve of 35. oil-sand liquid separating tank emptying sediment outflow, 36. backflow pipe valves, 37. bulk processing tank aerating pipe valves, 38. receive oily header, 39. bulk processing tank collection tube valves, 40. bulk processing tank fluid pipe valves, 41. backwashing pump water inlet pipe valves, 42. thin treatment tank aerating pipe valves, 43. thin treatment tank emptying pipe valves, 44. thin treatment tank collection tube valves, 45. blowdown headers, 46. bases, the 47. oil-sand liquid separating tank sediment outflow mouths of pipe, 48. oil-sand liquid separating tank tank bodies, the dual-purpose mouth of pipe of oil exhaust received by 49. oil-sand liquid separating tanks, the 50. oil-sand liquid separating tank fluid mouths of pipe, manhole on 51. oil-sand liquid separating tanks, 52. oil-sand liquid separating tank collection sand removing cylinders, 53. oil-sand liquid separating tank sand-precipitating tubes, 54. oil-sand liquid separating tank inside vortex producers, 55. oil-sand liquid separating tank convex round body shape deoiling fillers, 56. oil-sand liquid separating tank fluid guides, 57. oil-sand liquid separating tank inner conical-tubes, 58. is thick, thin treatment tank water outlet, back flushing is intake, emptying three mouth of pipe, 59. is thick, thin treatment tank tank body, 60. is thick, the thin treatment tank discharging mouth of pipe, 61. is thick, thin treatment tank manhole, 62. is thick, the dual-purpose mouth of pipe of thin treatment tank feed liquor blowdown, 63. is thick, the dual-purpose mouth of pipe of oil exhaust received by thin treatment tank, 64. is thick, the thin treatment tank charging mouth of pipe, 65. is thick, filter plate under thin treatment tank, 66. is thick, thin treatment tank filtrate, 67. is thick, filter plate on thin treatment tank, 68. is thick, thin treatment tank spill round body shape deoiling filler, 69. is thick, the outer vortex generator of thin treatment tank.
Embodiment
In Fig. 1,2,3, cable one end in cable turntable (1) is connected with electrical control cubicles (12) input terminal, the other end is connected with field power supply, and electrical control cubicles outlet is connected with lift pump (3), backwashing pump (6), filtrate recycle pump (9), air compressor machine (10) respectively (cable connect do not draw), pressure relief mechanism fluid inlet (32) is set with wellhead tree be connected by being connected pipe valve (connect pipe valve and wellhead tree set do not draw), and pressure relief mechanism (2) is exported and is connected with oil-sand liquid separating tank inside vortex producer (54) by oil-sand liquid separating tank feed liquor pipe valve (30), lift pump fluid inlet (33) is connected with on-the-spot sewage lagoon (pipe connecting and sewage lagoon do not draw) by pipe connecting, lift pump fluid inlet is also connected with fluid header (13) by backflow pipe valve (36), and lift pump outlet is connected with oil-sand liquid separating tank feed liquor pipe valve (30) by lift pump fluid pipe valve (29), oil-sand liquid separating tank air inlet pipe valve (34) and gas-holder pipe valve (31) of giving vent to anger is connected, oil-sand liquid separating tank fluid pipe valve (27) is connected with the dual-purpose pipe valve of bulk processing tank feed liquor blowdown (26), oil-sand liquid separating tank is received the oil dual-purpose pipe valve of exhaust (28) and is connected with the oily header of receipts (38), and the oil-sand liquid separating tank dual-purpose pipe valve of emptying sediment outflow (35) is connected with blowdown header (45), slightly, thin treatment tank aerating pipe valve (37, 42) pipe valve (31) of giving vent to anger with gas-holder is connected, slightly, the dual-purpose pipe valve (26 of thin treatment tank feed liquor blowdown, 24) be connected with blowdown header, slightly, the dual-purpose pipe valve (25 of oil exhaust received by thin treatment tank, 23) be connected with blowdown header, slightly, thin treatment tank feed pipe valve (18, 17) export with filtrate recycle pump (9) and be connected, slightly, thin treatment tank discharging pipe valve (20, 14) be connected with filtrate pump inlet, slightly, thin treatment tank back flushing water inlet pipe valve (19, 16) export with backwashing pump (6) and be connected, slightly, thin treatment tank back flushing water inlet pipe valve pipe valve of also giving vent to anger with gas-holder is connected, bulk processing tank fluid pipe valve (40) is connected with the dual-purpose pipe valve of thin treatment tank feed liquor blowdown (24), thin treatment tank fluid pipe valve (15) is connected with fluid header, gas-holder (11) is connected with air compressor machine (10) by air compressor machine pipe valve (22) of giving vent to anger, fluid header (13) and backwashing pump pipe valve (41) of intaking is connected, and fluid header is also connected with scavenging solution storage device (scavenging solution storage device does not draw), fluid header is equipped with under meter (8), receive oily header to be connected with drains receptacle (drains receptacle does not draw), blowdown header is connected with pollution discharge pond (pollution discharge pond does not draw).
Skid Multifunctional integrated oil-field water treatment unit operation scheme, apparatus design is tertiary treatment, by directly entering device process after pressure relief mechanism step-down when liquid returns row, also promote into device process by lift pump again after can entering underground pond, first pending liquid enter in one-level oil-sand liquid separating tank by oil slick, sand, liquid being separated after inside vortex producer, convex round body shape deoiling filler, sand setting passage, sand-precipitating tube, inner conical-tube, fluid guide stepwise disposal; Liquid after flash trapping stage enters in secondary bulk processing tank by dispersed oil, liquid, suspension macrobead being separated after outer vortex generator, spill round body shape deoiling filler, coarse filtration component, coarse media stepwise disposal; Liquid after second-stage treatment enters again by oil in water emulsion, liquid, subparticle being separated after outer vortex generator, spill round body shape deoiling filler, fine filtering component, fine filtering material stepwise disposal in three grades of thin treatment tanks again, and after tertiary treatment, liquid reaches drilling well, acidifying, pressure break, oil and water well measure well-flushing and oil-field flooding reuse requirement respectively.
Skid Multifunctional integrated oil-field water treatment unit filtration medium cleaning and regeneration mode, the deposit gas in gas-holder through gas-holder give vent to anger pipe valve (31) respectively with slightly, thin treatment tank back flushing pipe valve (19,16) of intaking is communicated with that to carry out air-blowing to filtrate loose, after filtrate is loose, startup backwashing pump of stopping the supple of gas or steam carries out back flushing, water is through thick, thin treatment tank back flushing water inlet pipe valve is from slightly, thin treatment tank water outlet, back flushing is intake, emptying three enters with the mouth of pipe (58) carries out back flushing, restart filtrate recycle pump after back flushing is normal and carry out filtrate circulation back flushing, during the back flushing of circulation filtrate, filtrate is extracted out from the discharging mouth of pipe (60), through discharging pipe valve (20, 14) enter in filtrate recycle pump, through pump pressurization again by feed pipe valve (18, 17) turn back to tank from the charging mouth of pipe (64) and complete circulation filtrate and wash by rubbing with the hands, sewage backwash after the dual-purpose mouth of pipe of feed liquor blowdown (62) discharge, enters the dual-purpose pipe valve of feed liquor blowdown (26,24) enter sewage pond for recovering through blowdown header (45).
Claims (2)
1. a skid Multifunctional integrated oil-field water treatment unit, by cable turntable, pressure relief mechanism, lift pump, oil-sand liquid separating tank, bulk processing tank, backwashing pump, thin treatment tank, under meter, filtrate recycle pump, air compressor machine, gas-holder, electrical control cubicles be connected pipe valve composition and be integrally placed on the upper or car of sled, it is characterized in that: the cable one end in cable turntable (1) is connected with electrical control cubicles (12) input terminal, the other end is connected with field power supply, electrical control cubicles outlet respectively with lift pump (3), backwashing pump (6), filtrate recycle pump (9), air compressor machine (10) connects, pressure relief mechanism fluid inlet (32) is set with wellhead tree by connection pipe valve and is connected, and pressure relief mechanism (2) outlet is connected with oil-sand liquid separating tank inside vortex producer (54) by oil-sand liquid separating tank feed liquor pipe valve (30), lift pump fluid inlet (33) is connected with on-the-spot sewage lagoon by pipe connecting, lift pump fluid inlet is also connected with fluid header (13) by backflow pipe valve (36), and lift pump outlet is connected with oil-sand liquid separating tank feed liquor pipe valve (30) by lift pump fluid pipe valve (29), oil-sand liquid separating tank air inlet pipe valve (34) and gas-holder pipe valve (31) of giving vent to anger is connected, oil-sand liquid separating tank fluid pipe valve (27) is connected with the dual-purpose pipe valve of bulk processing tank feed liquor blowdown (26), oil-sand liquid separating tank is received the oil dual-purpose pipe valve of exhaust (28) and is connected with the oily header of receipts (38), and the oil-sand liquid separating tank dual-purpose pipe valve of emptying sediment outflow (35) is connected with blowdown header (45), slightly, thin treatment tank aerating pipe valve (37, 42) pipe valve (31) of giving vent to anger with gas-holder is connected, slightly, the dual-purpose pipe valve (26 of thin treatment tank feed liquor blowdown, 24) be connected with blowdown header, slightly, the dual-purpose pipe valve (25 of oil exhaust received by thin treatment tank, 23) be connected with blowdown header (45), slightly, thin treatment tank feed pipe valve (18, 17) export with filtrate recycle pump (9) and be connected, slightly, thin treatment tank discharging pipe valve (20, 14) be connected with filtrate pump inlet, slightly, thin treatment tank back flushing water inlet pipe valve (19, 16) export with backwashing pump (6) and be connected, slightly, thin treatment tank back flushing water inlet pipe valve pipe valve of also giving vent to anger with gas-holder is connected, bulk processing tank fluid pipe valve (40) is connected with the dual-purpose pipe valve of thin treatment tank feed liquor blowdown (24), thin treatment tank fluid pipe valve (15) is connected with fluid header (13), gas-holder (11) is connected with air compressor machine (10) by air compressor machine pipe valve (22) of giving vent to anger, fluid header (13) and backwashing pump pipe valve (41) of intaking is connected, and fluid header is also connected with scavenging solution storage device, fluid header is equipped with under meter (8), receive oily header (38) to be connected with drains receptacle, blowdown header (45) is connected with pollution discharge pond,
Described oil-sand liquid separating tank (4) is vertical circular tank, tank cylinder top tangent line is provided with inside vortex producer (54), annular space in inside vortex producer is equipped with convex round body shape deoiling filler (55), sand-precipitating tube (53) is provided with in lower in tank cylinder, sand setting passage is provided with between tank cylinder and sand-precipitating tube, Guan Di center is provided with collection sand removing cylinder (52), collection sand removing cylinder side is provided with the sediment outflow mouth of pipe (47), tank deck center is provided with the fluid mouth of pipe (50), and fluid mouth of pipe periphery is provided with receives the oil dual-purpose mouth of pipe of exhaust (49);
Described bulk processing tank (5) and thin treatment tank (7) are identical vertical circular jar structure, water outlet, back flushing water inlet, emptying three mouth of pipe (58) is provided with at the bottom of tank, tank cylinder bottom is provided with the discharging mouth of pipe (60), manhole (61) is provided with in the middle part of tank cylinder, manhole top is provided with the charging mouth of pipe (64), tank deck center is provided with the dual-purpose mouth of pipe of feed liquor blowdown (62), and feed liquor blowdown dual-purpose mouth of pipe periphery is provided with receives the oil dual-purpose mouth of pipe of exhaust (63); In tank, bottom is provided with lower filter plate (65), lower filter plate is provided with filtrate (66), filter plate (67) is provided with above filtrate, upper filter plate upper center is provided with outer vortex generator (69), and the periphery of outer vortex generator is provided with spill round body shape deoiling filler (68); Two tanks share a filtrate recycle pump and a backwashing pump;
2. skid Multifunctional integrated oil-field water treatment unit according to claim 1, is characterized in that: lift pump (3) is vacuum primingpump, submersible pump and submerged pump three kinds.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310338278.5A CN104341052B (en) | 2013-07-29 | 2013-07-29 | Skid Multifunctional integrated oil-field water treatment unit |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310338278.5A CN104341052B (en) | 2013-07-29 | 2013-07-29 | Skid Multifunctional integrated oil-field water treatment unit |
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| CN104341052A true CN104341052A (en) | 2015-02-11 |
| CN104341052B CN104341052B (en) | 2016-04-20 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107902804A (en) * | 2017-12-22 | 2018-04-13 | 西安向阳航天材料股份有限公司 | A kind of oil field produced water treatment facilities |
| CN111303933A (en) * | 2020-03-06 | 2020-06-19 | 西南交通大学 | Kerosene filtering device for cleaning bullet train section |
| CN112759159A (en) * | 2021-02-04 | 2021-05-07 | 张后继 | Turbulent air-floating filtering electric cation-eliminating three-in-one treatment device |
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| CN101279778A (en) * | 2007-05-26 | 2008-10-08 | 丹东恒诚环保科技开发有限公司 | Three-phase cyclone separator cleaning treatment system for oil-contaminated water |
| CN101863529A (en) * | 2010-07-02 | 2010-10-20 | 华油惠博普科技股份有限公司 | Modular, skid-mounted and mobile oil-bearing sludge treatment equipment |
| CN203530040U (en) * | 2013-07-29 | 2014-04-09 | 山东海吉雅环保设备有限公司 | Skid-mounted multifunctional integrated oilfield water treatment device |
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2013
- 2013-07-29 CN CN201310338278.5A patent/CN104341052B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101279778A (en) * | 2007-05-26 | 2008-10-08 | 丹东恒诚环保科技开发有限公司 | Three-phase cyclone separator cleaning treatment system for oil-contaminated water |
| CN101863529A (en) * | 2010-07-02 | 2010-10-20 | 华油惠博普科技股份有限公司 | Modular, skid-mounted and mobile oil-bearing sludge treatment equipment |
| CN203530040U (en) * | 2013-07-29 | 2014-04-09 | 山东海吉雅环保设备有限公司 | Skid-mounted multifunctional integrated oilfield water treatment device |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107902804A (en) * | 2017-12-22 | 2018-04-13 | 西安向阳航天材料股份有限公司 | A kind of oil field produced water treatment facilities |
| CN111303933A (en) * | 2020-03-06 | 2020-06-19 | 西南交通大学 | Kerosene filtering device for cleaning bullet train section |
| CN112759159A (en) * | 2021-02-04 | 2021-05-07 | 张后继 | Turbulent air-floating filtering electric cation-eliminating three-in-one treatment device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104341052B (en) | 2016-04-20 |
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Application publication date: 20150211 Assignee: Heng Heng Petroleum Equipment Co., Ltd. Assignor: Haijiya Environment Equipment Co., Ltd., Shandong Contract record no.: 2018990000315 Denomination of invention: Skid-mounted multifunctional integral oil field water treatment device Granted publication date: 20160420 License type: Common License Record date: 20181128 |
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Assignee: BAIHENG PETROLEUM EQUIPMENT Co.,Ltd. Assignor: SHANDONG HYGIYA ENVIRONMENTAL PROTECTION EQUIPMENT Co.,Ltd. Contract record no.: 2018990000315 Date of cancellation: 20211011 |
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Application publication date: 20150211 Assignee: Baiheng Petroleum Equipment Co., Ltd Assignor: Shandong haijiya environmental protection equipment Co., Ltd Contract record no.: X2021990000682 Denomination of invention: Skid mounted multifunctional integrated oilfield water treatment device Granted publication date: 20160420 License type: Common License Record date: 20211110 |
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