CN104649471B - A kind of fracturing outlet liquid processes recycling flow process - Google Patents
A kind of fracturing outlet liquid processes recycling flow process Download PDFInfo
- Publication number
- CN104649471B CN104649471B CN201410845813.0A CN201410845813A CN104649471B CN 104649471 B CN104649471 B CN 104649471B CN 201410845813 A CN201410845813 A CN 201410845813A CN 104649471 B CN104649471 B CN 104649471B
- Authority
- CN
- China
- Prior art keywords
- liquid
- fracturing outlet
- outlet liquid
- fracturing
- discharge opeing
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Classifications
-
- 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
- C02F1/24—Treatment of water, waste water, or sewage by flotation
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
- C02F2103/34—Nature of the water, waste water, sewage or sludge to be treated from industrial activities not provided for in groups C02F2103/12 - C02F2103/32
-
- 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
Landscapes
- 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)
- Cyclones (AREA)
Abstract
The present invention provides a kind of fracturing outlet liquid to process recycling flow process, discharge opeing is returned from what well head open flow went out, sequentially pass through high pressure cyclone desanding device, reducing pressure by regulating flow manifold, low voltage three-phase segregation apparatus and fine filtration device, fracturing outlet liquid storage tank, reconfigure fracturing fluid through detection interpolation water conditioner and leave in fracturing fluid storage tank, isolated gas after high pressure cyclone desanding device collected by gas transmission line, the Selid propping agent that container collection goes out collected through low voltage three-phase segregation apparatus sub-argument by proppant, the present invention saves water blanket, shorten construction period, monolayer shortens about 1 day engineering time, next lamination that can be used for very moment well splits, and take up an area and little need not storage reaction pond etc., recycling water resource, reduce environmental pollution.
Description
Technical field
The present invention relates to a kind of fracturing outlet liquid and process recycling flow process, belong to the water treatment field of oil-gas field development.
Background technology
Cluster well transformation the most both at home and abroad all has been enter into the large-scale development stage, from initial " two sisters " on Oil/gas Well
Cluster well is to " 14 sisters " cluster well, and from clump formula straight well (inclined shaft) to cluster horizontal well, cluster well quantity increases year by year, transformation
Scale increases the most year by year.Further, since large quantities of hypotonic Oil in Super-low Permeability Reservoirs enter scale development stage, fractured horizontal well and volume pressure
Split the agent technology being increasingly becoming oil-gas field development, but along with the expansion of transformation scale, the quantity returning discharge opeing after pressure is also anxious
Increase severely big.According to statistics, the Changqing oilfields fracturing outlet liquid amount of nearly 3 years is about 72.64,128.39,1,800,000 tons.
Processing mode currently for fracturing fluid recovery (backflow) liquid has two kinds, a kind of be take with water-tank lorry be transported to specify useless
Water station carries out concentrating purified treatment, then re-injection or discharge；Another kind is the collection using at the construction field (site) and digging blowdown hole paving antiseepage film
Middle process, does not only take up substantial amounts of soil, and the pollution to environment can not thoroughly solve.
Summary of the invention
In order to overcome fracturing outlet liquid cannot the technical barrier of online recycling recycling, pollute environment and relatively costly, with
It is the longest that past fracturing outlet liquid processes technique, and processing equipment and storage tank take up an area big problem, and the present invention provides a kind of pressure break
Return discharge opeing and process recycling flow process.
A kind of fracturing outlet liquid process recycling flow process be carry out fracturing outlet liquid separating, filter after, then reconfigure
The fracturing fluid of Cheng Xin, it is achieved the process recycling of fracturing outlet liquid.Flow can be processed reach pressure with online treatment fracturing outlet liquid
Split the traffic requirement of open flow discharge opeing, quickly process (the lowest 60m for the treatment of capacity3/ h), next lamination that can be used for very moment well splits, and accounts for
Ground is little, it is not necessary to storage reaction pond etc., reuses water resource, reduces environmental pollution.
The technical solution used in the present invention is:
A kind of fracturing outlet liquid processes recycling flow process, specifically comprises the following steps that
1) after natural gas well pressing crack construction terminates, the fracturing outlet liquid that well head open flow goes out through high pressure cyclone depassing unit,
Gas in fracturing outlet liquid is separated to gas transmission line, liquid and Selid propping agent mixed liquor are separated；
2) by step 1) through separation after mixed liquor through low voltage three-phase segregation apparatus, by the gas in mixed liquor, liquid
Body and Selid propping agent separate, and gas separates to gas transmission line, and Selid propping agent collects container collection by proppant；
3) by step 2) in isolated liquid send into fine filtration device, through coarse filtration and finly filtration, reduce the row of returning
The content of float in liquid so that it is content is not higher than 200mg/L；
4) by step 3) through fine filtration device process after fracturing outlet liquid be sent to fracturing outlet liquid holding vessel
In, through detector detection pH value and liquid viscosity, when pH value > 5 time, add pH adjusting agent so that pH value≤5, liquid
PH value be adjusted to pH value≤5 after, by inject adding set to return discharge opeing holding vessel supplement weight ratio be 3 ‰ add water quality adjust
Joint agent, and inject thickening agent so that it is viscosity increases to more than 30mPa s；
5) it is sent in fracturing fluid holding vessel store by the mixing liquid obtained through step 4).
In described step 1) through high pressure cyclone depassing unit process after liquid and Selid propping agent mixed liquor through celebrating a festival
Stream blood pressure lowering manifold blood pressure lowering, is re-fed into after being controlled within 2MPa by the pressure of mixed liquor in low voltage three-phase segregation apparatus.
First the fracturing outlet liquid that described well head open flow goes out branch can also be stored into and return in discharge opeing temporary storage tank, is then fed into
To low voltage three-phase segregation apparatus.
Described Selid propping agent is quartz sand or haydite.
The invention have the benefit that
(1) this cover system can realize online treatment and the recycling of fracturing outlet liquid, and treating capacity is not less than 60m3/h,
Oil/gas Well open flow discharge opeing requirement can be met.
(2) return discharge opeing recovery system and there is execute-in-place simply, return discharge opeing organic efficiency high, the advantage of reusable edible.
(3) return discharge opeing recovery and processing system and can reduce fracturing fluid discharging of waste liquid, save water blanket, by the row of returning of 65-85%
Rate, recovery return discharge opeing for the dosing water constructed again, shorten construction period, monolayer shortens about 1 day engineering time.
It is described in detail below with reference to accompanying drawing.
Accompanying drawing explanation
Fig. 1 one fracturing outlet liquid processes recycling flow process.
In figure, reference: 1, well head；2, high pressure cyclone depassing unit；3, reducing pressure by regulating flow manifold；4, low voltage three-phase separates
Device；5, fine filtration device；6, fracturing outlet liquid holding vessel；7, fracturing fluid holding vessel；8, discharge opeing temporary storage tank is returned；9, appendix
Line；10, container collected by proppant；11, adding set is injected；12, detector.
Detailed description of the invention
Embodiment 1:
In order to overcome fracturing outlet liquid cannot the technical barrier of online recycling recycling, pollute environment and relatively costly, with
It is the longest that past fracturing outlet liquid processes technique, and processing equipment and storage tank take up an area big problem, and the present invention provides a kind of pressure break
Returning discharge opeing and process recycling flow process, the present invention can realize online treatment and the recycling of fracturing outlet liquid, and treating capacity is the lowest
In 60m3/ h, can meet Oil/gas Well open flow discharge opeing requirement.Return discharge opeing recovery system and there is execute-in-place simply, return discharge opeing and reclaim effect
Rate is higher than 98%, the advantage of reusable edible.Return discharge opeing recovery and processing system and can reduce fracturing fluid discharging of waste liquid, save pressure break and use
Water, shortens construction period, and monolayer shortens about 1 day engineering time.
Device in the present invention is to carry out installing connection by following, and high pressure cyclone depassing unit 2 is by pipeline and well head 1
Connecting, the gas outlet, top of high pressure cyclone depassing unit 2 connects gas gathering pipeline 9, high pressure cyclone depassing unit 2 bottom
Outlet is connected with reducing pressure by regulating flow manifold 3, and reducing pressure by regulating flow manifold 3 lower part outlet is connected with low voltage three-phase segregation apparatus 4；Low voltage three-phase
The outlet connection of segregation apparatus 4 one end has proppant to collect container 10, low voltage three-phase segregation apparatus 4 upper outlet and gas gathering and transportation
Pipeline 9 is connected, and lower part outlet is connected with fine filtration device 5, and described fine filtration device 5 lower part outlet stores up with fracturing outlet liquid
Deposit the connection of tank 6 upper entrance；Porch, fracturing outlet liquid holding vessel 6 one end connects has the injection injecting fracturing fluid additive to add
Device 11, fracturing outlet liquid holding vessel 6 other end is additionally provided with the detector 12 that detection is analyzed, described fracturing outlet liquid holding vessel
6 lower part outlets connect fracturing fluid holding vessel 7.
A kind of fracturing outlet liquid processes recycling flow process, specifically comprises the following steps that
1), after natural gas well pressing crack construction terminates, the fracturing outlet liquid that well head 1 open flow goes out is through high pressure cyclone depassing unit
2, the gas in fracturing outlet liquid is separated to gas transmission line 9, liquid and Selid propping agent mixed liquor are separated；
2) by step 1) through separation after mixed liquor through low voltage three-phase segregation apparatus 4, by the gas in mixed liquor, liquid
Body and Selid propping agent separate, and gas separates to gas transmission line 9, and Selid propping agent is collected container 10 by proppant and received
Collection；
3) by step 2) in isolated liquid send into fine filtration device 5, through coarse filtration and finly filtration, reduce the row of returning
The content of float in liquid so that it is content is not higher than 200mg/L；
4) fracturing outlet liquid after fine filtration device 5 processes in step 3) is sent to fracturing outlet liquid holding vessel
In 6, detect pH value and viscosity through detector 12, when pH value > 5 time, add pH adjusting agent so that pH value≤5, the pH of liquid
After value is adjusted to pH value≤5, it is that 3 ‰ interpolation water quality are adjusted by injecting adding set 11 to return discharge opeing holding vessel 6 supplementing weight ratio
Joint agent, and inject thickening agent so that it is viscosity increases to more than 30mPa s；
5) it is sent in fracturing fluid holding vessel 7 store by the mixing liquid obtained through step 4).
Described Selid propping agent is quartz sand or haydite.
A kind of fracturing outlet liquid of the present invention processes recycling flow process, by high pressure cyclone desanding device 2, low voltage three-phase
Segregation apparatus 4 and 5 three processing modules of fine filtration device are constituted, and each module independently becomes to prize, supporting reducing pressure by regulating flow manifold 3,
Proppant is collected container 10, is returned discharge opeing temporary storage tank 8, fracturing outlet liquid storage tank 6, fracturing fluid storage tank 7.According to fracturing outlet liquid
Character and Oil/gas Well type are different, packaging technology circuit of arranging in pairs or groups.
Described well head 1 is also associated with returning discharge opeing temporary storage tank 8, described in return the outlet of discharge opeing temporary storage tank 8 and separate with low voltage three-phase
The entrance of device 4 connects.
The present invention can realize online treatment and the recycling of fracturing outlet liquid, and treating capacity is not less than 60m3/ h, can be full
Foot Oil/gas Well open flow discharge opeing requirement.
Returning discharge opeing recovery system, to have execute-in-place simple, returns discharge opeing organic efficiency higher than 98%, reusable edible excellent
Point.
Return discharge opeing recovery and processing system and can reduce fracturing fluid discharging of waste liquid, save water blanket, lead by the row of returning of 65-85%,
That reclaims returns discharge opeing for the dosing water constructed again, shortening construction period, monolayer about 1 day engineering time of shortening.
Embodiment 2:
On the basis of embodiment 1,
1), after natural gas well pressing crack construction terminates, the fracturing outlet liquid that well head 1 open flow goes out is through high pressure cyclone depassing unit
2, the gas in fracturing outlet liquid is separated to gas transmission line 9, liquid and Selid propping agent mixed liquor are separated；
2) in step 1) through high pressure cyclone depassing unit 2 process after liquid and Selid propping agent mixed liquor through throttling
Blood pressure lowering manifold 3 blood pressure lowering, by fracturing control at 2MPa；
3) by step 2) through separation after mixed liquor through low voltage three-phase segregation apparatus 4, by the gas in mixed liquor, liquid
Body and Selid propping agent separate, and gas separates to intake pipeline 9, and Selid propping agent is collected container 10 by proppant and received
Collection；
4) isolated liquid in step 3) is sent into fine filtration device 5, through coarse filtration and finly filtration, reduce the row of returning
The content of float in liquid so that it is content is not higher than 200mg/L；
5) fracturing outlet liquid after fine filtration device 5 processes in step 4) is sent to fracturing outlet liquid holding vessel
In 6, detect pH value and viscosity through detector 12, when pH value > 5 time, add pH adjusting agent so that pH value≤5, the pH of liquid
After value is adjusted to pH value≤5, it is that 3 ‰ interpolation water quality are adjusted by injecting adding set 11 to return discharge opeing holding vessel 6 supplementing weight ratio
Joint agent, and inject thickening agent so that it is viscosity increases to more than 30mPa s；
6) it is sent in fracturing fluid holding vessel 7 store by the mixing liquid obtained through step 5).
In described step 1) through high pressure cyclone depassing unit 2 process after liquid and Selid propping agent mixed liquor through celebrating a festival
Stream blood pressure lowering manifold 3 blood pressure lowering, is re-fed into after being controlled within 2MPa by the pressure of mixed liquor in low voltage three-phase segregation apparatus 4.
The present embodiment increases reducing pressure by regulating flow manifold 3, the impact returning discharge opeing to low voltage three-phase segregation apparatus 4 can be reduced, also
Pressure can be controlled so that in the case of 2MPa, carry out subsequent step, protect low voltage three-phase segregation apparatus 4, add the longevity
Life.
First the fracturing outlet liquid that described well head 1 open flow goes out branch can also be stored into and return in discharge opeing temporary storage tank 8, then send
Enter to low voltage three-phase segregation apparatus 4.
Discharge opeing temporary storage tank 8 is returned in addition can alleviate the impact returning discharge opeing at well head 1 open flow, it is also possible to standby, can be effective
Prevent due to open flow excessive velocities, and the problem that gas row is the cleanest.
Embodiment 3:
Using the water conditioner of Hubei Hai Li Environmental Protection Technology Co., Ltd in the present embodiment, water conditioner is mainly removed
The part ion impact on fracturing fluid character in water.Water conditioner can be pH adjusting agent, regulates pH value postemphasis proportion so that
Final pH value is less than or equal to 5, meets the requirement reconfiguring fracturing fluid.
The fracturing outlet liquid that open flow goes out, has the most had previously been stored in and has returned in the temporary storage tank of discharge opeing 8, reaches to slow down the energy of open flow flow
Power, it is also possible to be directly entered low voltage three-phase segregation apparatus 4, carries out separating air-liquid and Selid propping agent.
The process flow of the present invention: gas well returns discharge opeing disposal ability 4m3/ min, gas 20 × 104m3/d；Liquids recovery rate
99%, gas-liquid separation rate 99%, separate desanding rate 99%；Oil well returns discharge opeing disposal ability 3m3/ min, liquids recovery rate 99%, separate
Desanding rate 99%；Return discharge opeing suspension content and be not higher than 200mg/L.
Fine filtration device 5 returns discharge opeing suspension content after processing and is not higher than 200mg/L.
This cover system can realize online treatment and the recycling of fracturing outlet liquid, and treating capacity is not less than 60m3/ h, energy
Meet Oil/gas Well open flow discharge opeing requirement.
Returning discharge opeing recovery system, to have execute-in-place simple, returns discharge opeing organic efficiency higher than 98%, reusable edible excellent
Point.
Return discharge opeing recovery and processing system and can reduce fracturing fluid discharging of waste liquid, save water blanket, lead by the row of returning of 65-85%,
That reclaims returns discharge opeing for the dosing water constructed again, shortening construction period, monolayer about 1 day engineering time of shortening.
Low voltage three-phase segregation apparatus 4 in above-described embodiment is three phase separator, and high pressure cyclone depassing unit 2 is degasification
Device, fine filtration device 5 are fine filter, inject adding set and use technology known to this.The present embodiment is chatted the most in detail
The parts stated and structure belong to the well-known components of the industry and common structure or conventional means, describe the most one by one.
Exemplified as above is only the illustration to the present invention, is not intended that the restriction to protection scope of the present invention, all
It is within design same or analogous with the present invention belongs to protection scope of the present invention.
Claims (4)
1. fracturing outlet liquid processes a recycling flow process, specifically comprises the following steps that
1), after natural gas well pressing crack construction terminates, the fracturing outlet liquid that well head (1) open flow goes out is through high pressure cyclone depassing unit
(2), the gas in fracturing outlet liquid is separated to gas transmission line (9), liquid and Selid propping agent mixed liquor are separated；
2) by step 1) through separation after mixed liquor through low voltage three-phase segregation apparatus (4), by the gas in mixed liquor, liquid
And Selid propping agent separates, gas separates to gas transmission line (9), and Selid propping agent collects container (10) by proppant
Collect；
3) by step 2) in isolated liquid send into fine filtration device (5), through coarse filtration and finly filtration, reduce and return discharge opeing
The content of middle float so that it is content is not higher than 200mg/L；
4) by step 3) through fine filtration device (5) process after fracturing outlet liquid be sent to fracturing outlet liquid holding vessel
(6) in, through detector (12) detection pH value and viscosity, when pH value > 5 time, add pH adjusting agent so that pH value≤5, liquid
PH value be adjusted to pH value≤5 after, be 3 ‰ to add by injecting adding set (11) to return discharge opeing holding vessel (6) supplementing weight ratio
Add water conditioner, and inject thickening agent so that it is viscosity increases to more than 30mPa s；
5) it is sent to the mixing liquid obtained through step 4) in fracturing fluid holding vessel (7) store.
A kind of fracturing outlet liquid the most according to claim 1 processes recycling flow process, it is characterised in that: in described step 1)
Through high pressure cyclone depassing unit (2) process after liquid and Selid propping agent mixed liquor through reducing pressure by regulating flow manifold (3) blood pressure lowering,
It is re-fed into after the pressure of mixed liquor is controlled within 2MPa in low voltage three-phase segregation apparatus (4).
A kind of fracturing outlet liquid the most according to claim 1 processes recycling flow process, it is characterised in that: described well head (1)
The fracturing outlet liquid that open flow goes out when instantaneous delivery more than flow processing ability time, it is also possible to first branch be stored into return discharge opeing keep in
In tank (8), it is then fed into low voltage three-phase segregation apparatus (4).
A kind of fracturing outlet liquid the most according to claim 1 processes recycling flow process, it is characterised in that: described solid support
Agent is quartz sand or haydite.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410845813.0A CN104649471B (en) | 2014-12-31 | 2014-12-31 | A kind of fracturing outlet liquid processes recycling flow process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410845813.0A CN104649471B (en) | 2014-12-31 | 2014-12-31 | A kind of fracturing outlet liquid processes recycling flow process |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104649471A CN104649471A (en) | 2015-05-27 |
| CN104649471B true CN104649471B (en) | 2016-08-17 |
Family
ID=53241183
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410845813.0A Active CN104649471B (en) | 2014-12-31 | 2014-12-31 | A kind of fracturing outlet liquid processes recycling flow process |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104649471B (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107176731A (en) * | 2016-03-09 | 2017-09-19 | 中国石油化工股份有限公司 | Fracturing outlet liquid processing unit and method |
| CN107840481A (en) * | 2017-09-29 | 2018-03-27 | 中国石油天然气股份有限公司 | A kind of recovery processing process for fracturing return liquid |
| CN108975535B (en) * | 2018-07-27 | 2019-05-28 | 中国石油大学(北京) | The recovery system and method that test is split in row pressure are returned for shale gas |
| CN109267986A (en) * | 2018-09-30 | 2019-01-25 | 中国石油天然气股份有限公司 | A kind of anhydrous pressure break liquid device of lower carbon number hydrocarbons and fracturing process |
| CN114622887A (en) * | 2022-02-10 | 2022-06-14 | 中国石油化工集团有限公司 | Single-well zipper-type fracturing gas testing construction method |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7699994B2 (en) * | 2007-08-02 | 2010-04-20 | Ecosphere Technologies, Inc. | Enhanced water treatment for reclamation of waste fluids and increased efficiency treatment of potable waters |
| CN102992524B (en) * | 2012-04-23 | 2014-12-17 | 北京矿冶研究总院 | Treatment method of fracturing flow-back fluid |
| CN203683451U (en) * | 2014-02-12 | 2014-07-02 | 四川锦矗高乐油气科技有限责任公司 | Fracturing fluid recycling system |
| CN104069678B (en) * | 2014-06-23 | 2015-09-16 | 中国石油集团川庆钻探工程有限公司工程技术研究院 | A kind of fracturing fluid recovery is box carries slotting desanding method |
-
2014
- 2014-12-31 CN CN201410845813.0A patent/CN104649471B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN104649471A (en) | 2015-05-27 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104649471B (en) | A kind of fracturing outlet liquid processes recycling flow process | |
| CN202530030U (en) | Flow-back fracturing fluid recycling system of natural gas well | |
| RU2689452C2 (en) | Modular installation for processing flow of composition of reverse inflow and methods for processing it | |
| CN103657840A (en) | Dry type discharge method of phosphorus ore tailings | |
| CN104632152B (en) | A kind of ultra-low penetration water injection well in oil fields augmented injection depressurizing system and its method | |
| CN209838390U (en) | Oil well produced liquid near centralized processing system | |
| CN204958596U (en) | Flowing back efficient handling of device is returned to fracturing | |
| CN104514532A (en) | Multi-well wellhead concentrated foam scrubbing and concentrated defoaming foam drainage system | |
| CN203683451U (en) | Fracturing fluid recycling system | |
| CN104692555A (en) | Recycling and reutilization method and device for flow-back fracturing fluid | |
| CN205575826U (en) | Anti - flowing back processing system of sled multi -functional fracturing of dress formula | |
| CN104533373B (en) | A kind of fracturing flow-back fluid of oil well body reclaims desanding device | |
| CN203820577U (en) | All-in-one machine for comprehensive sewage treatment | |
| CN108211422B (en) | Device and method for reducing caprolactam in benzene extraction raffinate | |
| CN202700661U (en) | Defoaming system for bauxite mineral separation | |
| CN206616071U (en) | Oily-water seperating equipment | |
| CN206111115U (en) | Coiled tubing underbalance sand washing device | |
| CN103864241A (en) | Comprehensive sewage treatment all-in-one machine | |
| CN203429012U (en) | Efficient energy-saving pollution-free dry processing system of bauxite washing tailing pulp | |
| CN207483597U (en) | A kind of oil sludge processing is prized with water-oil separating | |
| CN202892983U (en) | Oil-gas-water phase separation skid-mounted pressurizing device | |
| CN204159072U (en) | A kind of excessive ammonia clarifier of the blasting condensation circulatory system | |
| CN202968277U (en) | Oil-field sewage treatment device | |
| CN207093000U (en) | Skid-mounted type drilling well oil base, water-base mud do not land processing environment friendly system | |
| CN208345922U (en) | Three sections of high efficiency composition processing systems of oily wastewater |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20211013 Address after: 100007 Oil Mansion, 9 North Avenue, Dongcheng District, Beijing, Dongzhimen Patentee after: CHINA NATIONAL PETROLEUM Corp. Patentee after: CHINA NATIONAL PETROLEUM CORPORATION CHUANQING DRILLING ENGINEERING Co. Address before: 710018 room 1207, Changqing building, Changqing Xing Long Yuan District, Xi'an, Shaanxi Patentee before: CHINA NATIONAL PETROLEUM CORPORATION CHUANQING DRILLING ENGINEERING COMPANY LIMITED CHANGQING DOWNHOLE TECHNOLOGY Co. Patentee before: CHINA NATIONAL PETROLEUM CORPORATION CHUANQING DRILLING ENGINEERING Co. |
|
| TR01 | Transfer of patent right |