CN103951110B - Oil field fracturing waste fluid treatment device - Google Patents
Oil field fracturing waste fluid treatment device Download PDFInfo
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- CN103951110B CN103951110B CN201410184142.8A CN201410184142A CN103951110B CN 103951110 B CN103951110 B CN 103951110B CN 201410184142 A CN201410184142 A CN 201410184142A CN 103951110 B CN103951110 B CN 103951110B
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- Separation Of Suspended Particles By Flocculating Agents (AREA)
Abstract
The invention relates to the field of oil field wastewater treatment and particularly relates to an oil field fracturing waste fluid treatment device comprising a shearing tank, a coagulation reaction tank, a deposition water tank, an inclined plate water tank and a liquid storage tank, wherein the shearing tank is internally provided with a shearer; the shearer comprises a rotating shaft, an asynchronous motor and a plurality of first cutters; the plurality of first cutters are fixedly arranged on the rotating shaft in a staggered way along the direction from the top of the shearing tank to the bottom of the shearing tank; a plurality of second cutters are arranged on the inner side wall of the shearing tank in a staggered way; the shearing tank is communicated with the coagulation reaction tank through an S-shaped communicating pipe; the coagulation reaction tank is communicated with the deposition water tank, the deposition water tank is communicated with the inclined plate water tank in which an inclined plate is arranged, and the inclined plate water tank is communicated with the liquid storage tank. The fracturing waste fluid treatment device provided by the invention has the advantages that a polymer polymerization chain in a fracturing waste fluid is sheared at a high speed by using the plurality of groups of cutters so as to be chopped, the fracturing waste fluid is effectively degraded, and the viscosity of the fracturing waste fluid is reduced. No strong acid agents are used, so that the production cost is reduced, no potential safety hazards exist, and the safety is good.
Description
Technical field
The present invention relates to field of oilfield sewage treatment, return discharge opeing treatment unit in particular to oil field compression fracture.
Background technology
Pressure break is one of major measure of well production increment.It is, with high pressure, fracturing liquid is injected stratum, makes the crack growth on stratum and causes new crack, and inserting propping agent, thus improves the rate of permeation on stratum.Of the fracturing fluid effect is transmission of pressure, form formation fracture and carry propping agent and enter crack.Fracturing liquid is the unstable chemical system of heterogeneous body formed according to a certain ratio by multiple additives, it, according to the chemical property of its preparing materials and the final proterties of system, is divided into aqueous fracturing fluid, oil base fracturing fluid, Emulsified fracturing fluid, foamed fracturing fluid, surfactant micelle fracturing liquid etc.Because one of of the fracturing fluid major function is exactly specified location propping agent being carried to crack foreword by pit shaft through eyelet, therefore of the fracturing fluid suspension and carry (pressure break husky etc.) ability is its basic requirement, therefore fracturing liquid must possess higher viscosity.
Fracturing outlet liquid mainly refers to the remaining fracturing liquid returning discharge after pressing crack construction from Oil/gas Well, composition mainly comprises pressure break original gelatin and broken glue returns discharge opeing, wherein containing guanidine glue, formaldehyde, oil and other various additives etc., there is pollutant component complexity, sediment concentration is high, viscosity is large, COD concentration high.Because the composition of different system, dissimilar fracturing outlet liquid is widely different, be multiphase mixture again, the organism composition of high molecular (molecular weight is from tens0000 to millions of) is complicated, therefore intractability is larger.
If fracturing outlet liquid directly discharges, can affect to the soil of periphery, vegetation, surface water and groundwater, therefore, must before discharging, it effectively be processed.Because fracturing outlet liquid has full-bodied characteristic, therefore in the stratum of High Temperature High Pressure, non-degradable for a long time.In correlation technique, usually use a large amount of strong acid medicaments to degrade to fracturing outlet liquid, reduce the viscosity of fracturing outlet liquid, adopt such degraded mode, not only add production cost; And in the process of degraded, owing to using strong acid medicament, also bring huge potential safety hazard to production.
Summary of the invention
Oil field compression fracture is the object of the present invention is to provide to return discharge opeing treatment unit, to solve the above problems.
Provide oil field compression fracture in an embodiment of the present invention and return discharge opeing treatment unit, comprise and shear tank, coagulating tank, settling tank, swash plate water tank and liquid storage tank;
Be provided with fluid inlet on the upside of the waist of shearing tank, in it, be provided with clipper; Clipper comprises rotating shaft, asynchronous machine and some first cutting knifes; Rotating shaft is arranged along the center line shearing tank, and its one end is connected with the rotation axis of asynchronous machine through shearing tank; Some first cutting knifes, along shearing the top of tank to the bottom direction shearing tank, interlocking and being fixedly installed in rotating shaft; First cutting knife is greater than the distance of fluid inlet to the top of shearing tank to the distance at the top of shearing tank; Shear on the inner side-wall of tank, be staggeredly equipped with some second cutting knifes, first cutting knife and second cutting knife be adjacent form one group of cutting knife, and the distance often organizing the first cutting knife and the second cutting knife in cutting knife near the top of shearing tank is greater than the distance often organizing the first cutting knife and the second cutting knife in cutting knife away from the top of shearing tank;
The bottom of shearing tank is provided with the first liquid outlet, and the first liquid outlet was communicated with on the upside of the waist of coagulating tank by serpentine communicating pipe; Agitator is provided with in coagulating tank;
The bottom of coagulating tank is provided with the second liquid outlet, and the second liquid outlet is connected with settling tank, and settling tank is connected with swash plate water tank, is provided with swash plate in swash plate water tank, and the top of swash plate water tank is communicated with liquid storage tank.
Preferably, the distance between the first cutting knife and the second cutting knife is 3mm ~ 5mm.
Preferably, the bottom of settling tank and the bottom of swash plate water tank are provided with some taper sludge sumps, and sludge sump is for storing mud.
Furthermore, sludge pump, sludge concentrator and belt filter press is also comprised; Some sludge sumps are all connected with the import of sludge pump by connecting pipe, and mud pump outlet is communicated with sludge concentrator by pipeline; Sludge concentrator is connected with belt filter press, and it is placed in the top of belt filter press.
Furthermore, also comprise reflux line, one end of reflux line is connected with the top of sludge concentrator, and its other end is communicated with coagulating tank.
Furthermore, also comprise dividing plate, dividing plate, along the axis of settling tank, is arranged on the connectivity part of settling tank and swash plate water tank, and dividing plate is 100mm away from the distance at one end to the top of settling tank of the bottom of settling tank.
Furthermore, also comprise dissolved air flotation device, dissolved air flotation device is communicated with the fluid inlet shearing tank by pipeline.
Furthermore, also comprise sled formula filtration unit, sled formula filtration unit is arranged on dissolved air flotation device and shears between tank, respectively by pipeline and the formula of sled filtration unit with shear tank and be connected.
Furthermore, also comprise activated charcoal filter, activated charcoal filter is placed in the bottom of liquid storage tank, is communicated with liquid storage tank.
Furthermore, also comprise iron-carbon micro-electrolysis reactor, it is arranged on sled formula filtration unit and shears between tank, is connected respectively at sled formula filtration unit by pipeline with shearing tank.
The oil field compression fracture of the above embodiment of the present invention returns discharge opeing treatment unit, fracturing outlet liquid is entered by fluid inlet to be sheared in tank, due to some groups of cutting knifes, along shearing the top of tank to the bottom direction shearing tank, distance between first cutting knife and the second cutting knife reduces successively, therefore shears in tank, and the high molecular polymerization chain in fracturing outlet liquid is by some groups of cutting knife high speed shear, high molecular polymerization chain is shredded, thus effectively reduces the viscosity of fracturing outlet liquid.Reduce the coagulating of fracturing outlet liquid by follow-up coagulating tank of viscosity, settling tank precipitates, the waste liquid processed enters in liquid storage tank by swash plate water tank desilt, completes the process of fracturing outlet liquid.Because fracturing outlet liquid does not use strong acid medicament in the process of degraded, therefore reduce production cost, and there is not the potential safety hazard using strong acid medicament to bring, security is good; In addition, waste liquid after treatment can directly discharge, and can not pollute surrounding enviroment.
Accompanying drawing explanation
In order to be illustrated more clearly in the specific embodiment of the invention or technical scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is some embodiments of the present invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
Fig. 1 is the structural representation that oil field compression fracture provided by the invention returns discharge opeing treatment unit.
Embodiment
For making the object, technical solutions and advantages of the present invention clearly, carry out clear, complete description by technical scheme of the present invention below.Obviously, described embodiment is only the present invention's part embodiment, instead of whole embodiments.Based on the embodiment in the present invention, other embodiments all that those of ordinary skill in the art obtain under the prerequisite not making creative work, all belong to the scope that the present invention protects.
In describing the invention, it should be noted that, unless otherwise clearly defined and limited, term " setting ", " installation ", " being connected ", " connection " should be interpreted broadly, and such as, can be fixedly connected with, also can be removably connect, or connect integratedly; Can be mechanical connection, also can be electrical connection; Can be directly be connected, also indirectly can be connected by intermediary, can be the connection of two element internals.For the ordinary skill in the art, particular case above-mentioned term concrete meaning in the present invention can be understood.
As shown in Figure 1, return discharge opeing treatment unit present embodiments providing oil field compression fracture, comprise and shear tank 111, coagulating tank 113, settling tank 114, swash plate water tank 117 and liquid storage tank 119.Be provided with fluid inlet on the upside of the waist of shearing tank 111, in it, be provided with clipper.Clipper comprises rotating shaft, asynchronous machine 112 and some first cutting knifes 104.Rotating shaft is arranged along the center line shearing tank 111, and its one end is connected with the rotation axis of asynchronous machine 112 through shearing tank 111.Some first cutting knifes 104, along shearing the top of tank 111 to the bottom direction shearing tank 111, interlocking and being fixedly installed in rotating shaft.First cutting knife 104 is greater than the distance of fluid inlet to the top of shearing tank 111 to the distance at the top of shearing tank 111.Shear on the inner side-wall of tank 111, be staggeredly equipped with some second cutting knifes 103, first cutting knife 104 and second cutting knife 103 be adjacent form one group of cutting knife, and the distance often organizing the first cutting knife 104 and the second cutting knife 103 in cutting knife near the top of shearing tank 111 is greater than the distance often organizing the first cutting knife 104 and the second cutting knife 103 in cutting knife away from the top of shearing tank 111.The bottom of shearing tank 111 is provided with the first liquid outlet, and the first liquid outlet was communicated with on the upside of the waist of coagulating tank 113 by serpentine communicating pipe 105; Agitator 106 is provided with in coagulating tank 113.The bottom of coagulating tank 113 is provided with the second liquid outlet, and the second liquid outlet is connected with settling tank 114, and settling tank 114 is connected with swash plate water tank 117, is provided with swash plate 118 in swash plate water tank 117, and the top of swash plate water tank 117 is communicated with liquid storage tank 119.The fracturing outlet liquid treatment unit that the present embodiment provides, fracturing outlet liquid is entered by fluid inlet to be sheared in tank 111, due to some groups of cutting knifes, along shearing the top of tank 111 to the bottom direction shearing tank 111, distance between first cutting knife 104 and the second cutting knife 103 reduces successively, the fracturing outlet liquid sheared in tank 111 flows through first group of maximum cutting knife of the spacing of the first cutting knife 104 and the second cutting knife 103 at first, then, the spacing flowing through the first cutting knife 104 and the second cutting knife 103 is again less than second group of cutting knife of the spacing of the first cutting knife 104 and the second cutting knife 103 in first group of cutting knife.Fracturing outlet liquid according to above-mentioned rule, the some groups of cutting knifes that the spacing flowing through the first cutting knife 104 and the second cutting knife 103 is successively successively decreased gradually.Like this, high molecular polymerization chain, by some groups of cutting knife high speed shear, shreds by high molecular polymerization chain in fracturing outlet liquid completely, and fracturing outlet liquid is effectively degraded, and reduces the viscosity of fracturing outlet liquid.Those skilled in the art will appreciate that in the present embodiment, the distance between the first cutting knife 104 and the second cutting knife 103, should design according to actual production; Equally, need how much to organize cutting knife, also should carry out respective design according to the need of production of reality.In a word, as long as some groups of cutting knifes should meet above-mentioned rule, all the present embodiment is applicable to.In the present embodiment, high molecular polymerization chain in fracturing outlet liquid, between 3mm ~ 5mm, like this, can effectively shred by the distance between the first cutting knife 104 and the second cutting knife 103, more effectively realize the degraded of fracturing outlet liquid, more effectively reduce the viscosity of fracturing outlet liquid.The coagulating of fracturing outlet liquid by follow-up coagulating tank 113, the settling tank 114 that reduce viscosity precipitate, swash plate water tank 117 desilt, are entered in liquid storage tank 119 by the waste liquid processed, complete the process of fracturing outlet liquid.Because fracturing outlet liquid does not use strong acid medicament in the process of degraded, therefore reduce production cost, and there is not the potential safety hazard using strong acid medicament to bring, security is good; In addition, waste liquid after treatment, meets direct emission standard, can directly discharge, and can not pollute surrounding enviroment.
As shown in Figure 1, the oil field compression fracture that the present embodiment provides returns discharge opeing treatment unit, and all can be provided with some taper sludge sumps 107 in the bottom of the bottom of settling tank 114 and swash plate water tank 117, sludge sump 107 is for storing mud.Processing rear fracturing outlet liquid by coagulating tank 113 enters in settling tank 114 and swash plate water tank 117, because pressure break reaction solution reacts, therefore the solidliquid mixture formed containing silt, silt in solidliquid mixture through carrying out precipitating and being separated, by solid deposits such as silts in sludge sump 107 in settling tank 114 with swash plate water tank 117.Such design, makes the fracturing outlet liquid after processing more meet emission standard.Furthermore, the oil field compression fracture that the present embodiment provides returns discharge opeing treatment unit, can also comprise sludge pump 109, sludge concentrator 120 and belt filter press 110.Some sludge sumps 107 are all connected by the import of connecting pipe with sludge pump 109, and the outlet of sludge pump 109 is communicated with sludge concentrator 120 by pipeline.Sludge concentrator 120 is connected with belt filter press 110, and it is placed in the top of belt filter press 110.The solid matters such as the mud of accumulation in sludge sump 107, settling tank 114 and swash plate water tank 117 is discharged by sludge pump 109, then the solid matter such as mud dewaters through sludge concentrator 120, the solid matters such as the mud after dehydration enter belt filter press 110, belt filter press 110 dewaters further to solid matters such as the mud entered, make final sludge moisture content of discharging very low, effectively prevent in the solid matters such as mud containing a large amount of returning discharge opeing and pollute surrounding enviroment.In addition, the oil field compression fracture that the present embodiment provides returns discharge opeing treatment unit, can also comprise reflux line 115, and one end of reflux line 115 is connected with the top of sludge concentrator 120, and its other end is communicated with coagulating tank 113.By being provided with reflux line 115, the waste liquid in the solid matters such as mud is back in coagulating tank 113 by reflux line 115, makes the waste liquid finally processing into discharge safer, can not pollute surrounding enviroment.Furthermore, in the present embodiment, can also comprise dividing plate 116, dividing plate 116 is along the axis of settling tank 114, be arranged on the connectivity part of settling tank 114 and swash plate water tank 117, and dividing plate 116 is 100mm away from the distance at one end to the top of settling tank 114 of the bottom of settling tank 114.By being provided with dividing plate 116, the discharge opeings of returning in settling tank 114 completely through swash plate 118, can make to return discharge opeing and filter more complete, reduce the sediment concentration in the rear waste liquid of process.
As shown in Figure 1, the oil field compression fracture that the present embodiment provides returns discharge opeing treatment unit, can also comprise dissolved air flotation device 100, and dissolved air flotation device 100 is communicated with the fluid inlet shearing tank 111 by pipeline.By being provided with dissolved air flotation device 100, the solid matter in fracturing outlet liquid effectively can be filtered away, reducing the intractability that rear operation returns discharge opeing, reduce the attrition cost of rear processing apparatus.In addition, can also comprise sled formula filtration unit 101, sled formula filtration unit 101 is arranged on dissolved air flotation device 100 and shears between tank 111, respectively by pipeline and the formula of sled filtration unit 101 with shear tank 111 and be connected.By being provided with sled formula filtration unit 101, can removing further and returning solid impurity in discharge opeing, reduce further the content of the solid impurity returned in discharge opeing, reduce the intractability that rear operation returns discharge opeing.By being provided with dissolved air flotation device 100 and sled formula filtration unit 101, after can effectively reducing process, the content of the solid impurity in the waste liquid of discharge, meets emission standard more, improves the performance that this device process oil field compression fracture returns discharge opeing.It is worth mentioning that, in the present embodiment, can also comprise iron-carbon micro-electrolysis reactor 102, it is arranged on sled formula filtration unit 101 and shears between tank 111, is connected respectively at sled formula filtration unit 101 by pipeline with shearing tank 111.When fracturing outlet liquid flows in iron-carbon micro-electrolysis reactor 102, owing to there is difference in Electrode Potential between Fe and C, thus can form countless microbattery systems, form an electric field at its action space.Anodic reaction generates a large amount of Fe2+ and enters and return discharge opeing, and then is oxidized to Fe
3+, form the flocculation agent with higher adsorption-flocculation activity.Cathodic reaction produces [H] and [O] of a large amount of nascent state, under the condition of slant acidity, these activeconstituentss all with the many component generation redox reactions returned in discharge opeing, can make organic macromolecule generation chain-scission degradation, thus eliminate organism, improve return discharge opeing can biochemical degree.Certainly, aeration can be passed into by pneumatics aerator to iron-carbon micro-electrolysis reactor 102, effectively can improve electrolytic reaction efficiency in iron-carbon micro-electrolysis reactor 102 like this, make reaction more complete, thus effectively reduce the viscosity returning discharge opeing, reduce the intractability of rear operation.Furthermore, the fracturing outlet liquid treatment unit that the present embodiment provides, can also comprise activated charcoal filter 108, and activated charcoal filter 108 is placed in the bottom of liquid storage tank 119, is communicated with liquid storage tank 119.By being provided with activated charcoal filter 108, making the discharge opeing of returning finally processed more meet emission standard, can not surrounding environment be polluted.Finally, also it should be noted that, in the present embodiment, coagulating tank 113, sludge concentrator 120, belt filter press 110, dissolved air flotation device 100, sled formula filtration unit 101, activated charcoal filter 108 and iron-carbon micro-electrolysis reactor 102 etc., can be all that in this area, existing device realizes, be want to adapt to actual need of production, be all applicable to the present embodiment.
The oil field compression fracture that the present embodiment provides returns discharge opeing treatment unit, does not need to adopt acid medicine, and can effectively be degraded by fracturing outlet liquid, thus reduces the viscosity of fracturing outlet liquid, reduces production cost, decreases the potential safety hazard in work.In addition, returning discharge opeing and can reach emission standard after process, can not pollute surrounding enviroment; And the manufacture of this device is simple, processing step is few, low cost of manufacture, and treatment effect is good, is easy to process oil field compression fracture and returns discharge opeing use.
The foregoing is only the preferred embodiments of the present invention, be not limited to the present invention, for a person skilled in the art, the present invention can have various modifications and variations.Within the spirit and principles in the present invention all, any amendment done, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (10)
1. oil field compression fracture returns discharge opeing treatment unit, it is characterized in that, comprises and shears tank, coagulating tank, settling tank, swash plate water tank and liquid storage tank;
Be provided with fluid inlet on the upside of the waist of described shearing tank, in it, be provided with clipper; Described clipper comprises rotating shaft, asynchronous machine and some first cutting knifes; Described rotating shaft is arranged along the center line of described shearing tank, and its one end is connected with the rotation axis of described asynchronous machine through described shearing tank; Some described first cutting knifes, along the top of described shearing tank to the bottom direction of described shearing tank, are staggeredly fixedly installed in described rotating shaft; Described first cutting knife is greater than the distance of described fluid inlet to the top of described shearing tank to the distance at the top of described shearing tank; On the inner side-wall of described shearing tank, be staggeredly equipped with some second cutting knifes, described first cutting knife and described second cutting knife be adjacent form one group of cutting knife, and the distance often organizing the first cutting knife and described second cutting knife described in cutting knife near the top of described shearing tank is greater than the distance often organizing the first cutting knife and described second cutting knife described in cutting knife at the top away from described shearing tank;
The bottom of described shearing tank is provided with the first liquid outlet, and described first liquid outlet was communicated with on the upside of the waist of described coagulating tank by serpentine communicating pipe; Agitator is provided with in described coagulating tank;
The bottom of described coagulating tank is provided with the second liquid outlet, described second liquid outlet is connected with described settling tank, described settling tank is connected with described swash plate water tank, is provided with swash plate in described swash plate water tank, and the top of described swash plate water tank is communicated with described liquid storage tank.
2. oil field compression fracture according to claim 1 returns discharge opeing treatment unit, it is characterized in that, the distance between described first cutting knife and described second cutting knife be adjacent is 3mm ~ 5mm.
3. oil field compression fracture according to claim 2 returns discharge opeing treatment unit, it is characterized in that, the bottom of described settling tank and the bottom of described swash plate water tank are provided with some taper sludge sumps, and described sludge sump is for storing mud.
4. oil field compression fracture according to claim 3 returns discharge opeing treatment unit, it is characterized in that, also comprises sludge pump, sludge concentrator and belt filter press; Some described sludge sumps are all connected by the import of connecting pipe with described sludge pump, and described mud pump outlet is communicated with described sludge concentrator by pipeline; Described sludge concentrator is connected with described belt filter press, and it is placed in the top of described belt filter press.
5. oil field compression fracture according to claim 4 returns discharge opeing treatment unit, it is characterized in that, also comprises reflux line, and one end of described reflux line is connected with the top of described sludge concentrator, and its other end is communicated with described coagulating tank.
6. oil field compression fracture according to claim 5 returns discharge opeing treatment unit, it is characterized in that, also comprise dividing plate, described dividing plate is along the axis of described settling tank, be arranged on the connectivity part of described settling tank and described swash plate water tank, and described dividing plate is 100mm away from one end to the distance at top of described settling tank of the bottom of described settling tank.
7. oil field compression fracture according to claim 6 returns discharge opeing treatment unit, it is characterized in that, also comprises dissolved air flotation device, and described dissolved air flotation device is communicated with by the fluid inlet of pipeline with described shearing tank.
8. oil field compression fracture according to claim 7 returns discharge opeing treatment unit, it is characterized in that, also comprise sled formula filtration unit, described sled formula filtration unit is arranged between described dissolved air flotation device and described shearing tank, is connected with described sled formula filtration unit respectively by pipeline with described shearing tank.
9. oil field compression fracture according to claim 8 returns discharge opeing treatment unit, it is characterized in that, also comprises activated charcoal filter, and described activated charcoal filter is placed in the bottom of described liquid storage tank, is communicated with described liquid storage tank.
10. oil field compression fracture according to claim 9 returns discharge opeing treatment unit, it is characterized in that, also comprise iron-carbon micro-electrolysis reactor, it is arranged between described sled formula filtration unit and described shearing tank, is connected respectively at described sled formula filtration unit by pipeline with described shearing tank.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410184142.8A CN103951110B (en) | 2014-04-30 | 2014-04-30 | Oil field fracturing waste fluid treatment device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410184142.8A CN103951110B (en) | 2014-04-30 | 2014-04-30 | Oil field fracturing waste fluid treatment device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103951110A CN103951110A (en) | 2014-07-30 |
| CN103951110B true CN103951110B (en) | 2015-04-22 |
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| CN105692901B (en) * | 2016-02-26 | 2018-12-07 | 北京化工大学 | A kind of two-part removes the composite reaction slot and sewage water treatment method of ammonia nitrogen in water removal |
| CN106186138B (en) * | 2016-07-11 | 2019-05-10 | 赵刚 | Shale gas fracturing outlet liquid sewage-treatment plant |
| CN106596858B (en) * | 2016-12-12 | 2019-01-25 | 西南石油大学 | An experimental device for simulating the solubility and injectability of polymers |
| CN106823494B (en) * | 2017-03-25 | 2019-03-05 | 安徽鼎控自动化科技有限公司 | A kind of reverse-flow sludge settling centrifugation systems |
| CN111547896A (en) * | 2020-06-03 | 2020-08-18 | 四川人福生物环保有限公司 | Process and treatment system for treating wastewater generated in oil field operation |
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Application publication date: 20140730 Assignee: Daqing Qingxi Water Treatment Technology Service Co., Ltd. Assignor: Zhao Gang Contract record no.: 2015230000049 Denomination of invention: Oil field fracturing waste fluid treatment device Granted publication date: 20150422 License type: Exclusive License Record date: 20150513 |
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Assignee: Daqing Qingxi Water Treatment Technology Service Co., Ltd. Assignor: Zhao Gang Contract record no.: 2015230000049 Date of cancellation: 20191022 |
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Effective date of registration: 20191115 Address after: No. 179, Keji Road, Longfeng District, Daqing City, 163000 Heilongjiang Province Patentee after: Daqing dry run River Water Environmental Protection Technology Co., Ltd. Address before: 163000 Heilongjiang Province, Daqing City Ranghulu District Xi Jing Road 7 District Patentee before: Zhao Gang |