CN106869865B - A kind of plunger lift Combined Mining gas method integrated with foaming water discharge - Google Patents
A kind of plunger lift Combined Mining gas method integrated with foaming water discharge Download PDFInfo
- Publication number
- CN106869865B CN106869865B CN201710129344.6A CN201710129344A CN106869865B CN 106869865 B CN106869865 B CN 106869865B CN 201710129344 A CN201710129344 A CN 201710129344A CN 106869865 B CN106869865 B CN 106869865B
- Authority
- CN
- China
- Prior art keywords
- plunger
- gas
- piston body
- plunger lift
- water discharge
- 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
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
- E21B43/12—Methods or apparatus for controlling the flow of the obtained fluid to or in wells
- E21B43/121—Lifting well fluids
- E21B43/122—Gas lift
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K8/00—Compositions for drilling of boreholes or wells; Compositions for treating boreholes or wells, e.g. for completion or for remedial operations
- C09K8/58—Compositions for enhanced recovery methods for obtaining hydrocarbons, i.e. for improving the mobility of the oil, e.g. displacing fluids
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K8/00—Compositions for drilling of boreholes or wells; Compositions for treating boreholes or wells, e.g. for completion or for remedial operations
- C09K8/58—Compositions for enhanced recovery methods for obtaining hydrocarbons, i.e. for improving the mobility of the oil, e.g. displacing fluids
- C09K8/584—Compositions for enhanced recovery methods for obtaining hydrocarbons, i.e. for improving the mobility of the oil, e.g. displacing fluids characterised by the use of specific surfactants
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K8/00—Compositions for drilling of boreholes or wells; Compositions for treating boreholes or wells, e.g. for completion or for remedial operations
- C09K8/58—Compositions for enhanced recovery methods for obtaining hydrocarbons, i.e. for improving the mobility of the oil, e.g. displacing fluids
- C09K8/588—Compositions for enhanced recovery methods for obtaining hydrocarbons, i.e. for improving the mobility of the oil, e.g. displacing fluids characterised by the use of specific polymers
Landscapes
- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Organic Chemistry (AREA)
- Materials Engineering (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Mining & Mineral Resources (AREA)
- Geology (AREA)
- Geochemistry & Mineralogy (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Environmental & Geological Engineering (AREA)
- Containers And Packaging Bodies Having A Special Means To Remove Contents (AREA)
Abstract
The present invention relates to a kind of plunger lift in oil gas field gas producing technology Combined Mining gas methods integrated with foaming water discharge.It solves now that technique is single in drainage gas recovery, and the well complicated to hole condition variation carries out the problem of multinomial water drainage-gas recovery technology complexity.Its technical solution is: first making bubble rod row, stick is cylindric plunger, and internal is plunger main cavity, the spiral yarn shaped dovetail groove of piston body outer surface equidistantly distributed, and uniformly distributed fluid through-hole between slot, fluid passage aisle connects plunger main cavity and fluid through-hole；The main component of bubble rod row is polyethylene glycol, neopelex, imidazoline, polyoxyethylene alkyl ether, carboxymethyl cellulose；Liquid is lifted out well head in a manner of slug by plunger lift bleeding stage, plunger；Piston body gradually dissolves, which is sunken to shaft bottom, and dissolution generates a large amount of foams, carries out foam drainage gas recovery.This gas production method two kinds of liquid discharging gas producing techniques of spontaneous carry out, simple flow can reach the optimum efficiency of water pumping gas production.
Description
Technical field
The present invention relates to the integrated Combined Minings of a kind of plunger lift in oil gas field gas producing technology and foaming water discharge
Gas method belongs to gas reservoir water pumping gas production field.
Background technique
Gas well different degrees of production liquid in process of production, the liquid in gas well are usually distributed in gas in droplets
Xiang Zhong, gas is continuous phase and liquid is discontinuous phase flowing, and liquid is carried to ground by gas in droplets.Work as gas phase
Enough abilities cannot be provided hydrops will be formed in gas well shaft bottom when the liquid in pit shaft being made to flow continually out well head.High pressure
Liquid exists in the form of slug flow in well, and more stratum energies can be lost in it, limits gas capacity of well；In low pressure well
Middle hydrops can kill gas well completely, cause gas well water logging closing well, make the gas well underproduction.Therefore, shaft bottom hydrops is timely discharged, to production
The method that aqueous vapor well takes liquid discharging gas producing, to achieve the purpose that safeguard that gas well normally produces.
Plunger lift is jat special shape, and a kind of seal interface of the plunger as solid will lift gas
It body and is separated by lifting liquid, reduces gas channelling and liquid is fallen after rise, improve the efficiency of lifting gas.Application No. is
A kind of 201420751686.3 patent application " intelligent control plunger lift water pumping gas production system ", application No. is
A kind of 201620692793.2 patent application " improved Multifunctional split-type plunger lift device ", application No. is
201620678679.4 patent application " a kind of mating plunger lift water drainage gas production device of speed column ", and application No. is
A kind of patent application " Multi-stage plunger gas-lift production device " of 201620484991.X is all in original plunger lift technique
It improves, only carries out plunger lift work.Foam drainage gas recovery is by surfactant injection well bottom, by means of natural gas flow
Stirring, contacted with the inflation of shaft bottom hydrops, generate a large amount of more stable low-density resistance aqueous foams, foam by shaft bottom hydrops carry to
Ground, to achieve the purpose that water pumping gas production.Application No. is a kind of 201110046730.1 patent application " foam drainage gas recoveries
Well gathering line repetition foam device " and application No. is a kind of 201110046870.9 patent application " adaptation low temperature environments
Foam drainage gas recovery injection device " using liquid foam discharging agent carry out liquid down-hole pump note.Application No. is 200910235224.X
Patent application " a kind of liquid flood the spontaneous gas-solid body foams drain ball of gas well ", application No. is 201110076848.9 patent applications
" a kind of Retrievable underground foaming agent mixing device ", application No. is a kind of 200620033796.1 patent application " hollow solids
Cleanup additive ", and " one kind is adopted for natural gas horizontal well foaming water discharge application No. is 201210047727.6 patent application
The method of gas " use the progress solid underground throwing of solid foam discharging agent.Foam discharging agent related application is only to foam drainage gas recovery work
Skill improves, and only carries out foam drainage gas recovery work.
Conventional drainage gas producing technology uses different technique for different hole conditions, and comparatively, plunger lift draining is adopted
Gas technique serious, lower well of self-energy for hydrops, foam drainage gas recovery technique are directed to the higher well of self-energy.Plunger
Gaslift technique and foam drainage gas recovery technique can reach relatively good water pumping gas production effect, the well complicated for hole condition variation, and two
Item technique may be used in combination, but process is cumbersome, higher cost.This patent is exactly to solve technique in drainage gas recovery now
In the case where single, the well complicated for hole condition variation carries out the cumbersome problem of multinomial water drainage-gas recovery technology, can successively it is spontaneous into
Two kinds of techniques of row plunger lift liquid discharging gas producing and foam drainage gas recovery, simple flow, cost is relatively low.
Summary of the invention
Object of the present invention is to: well single in order to solve technique in drainage gas recovery now, complicated for hole condition variation
The cumbersome problem of multinomial water drainage-gas recovery technology is carried out, the present invention successively adopt by spontaneous carry out plunger lift liquid discharging gas producing and foaming water discharge
Two kinds of techniques of gas propose a kind of plunger lift Combined Mining gas method integrated with foaming water discharge.
The technical scheme adopted by the invention is that:
A kind of plunger lift Combined Mining gas method integrated with foaming water discharge first makes bubble row according to the diameter of gas recovery well
Stick, bubble rod row do plunger, and the shape of piston body is cylindrical body, are internally provided with plunger main cavity, uniform outside piston body
It is distributed fluid through-hole, plunger main cavity is connect with fluid through-hole by the fluid passage aisle being arranged, and plunger main cavity and fluid are logical
Hole is intended to improve plunger downstream rate, the spiral yarn shaped dovetail groove of piston body outer surface equidistantly distributed, fluid in slot with
Spiral trajectory flowing can be such that plunger is rotationally advancing, and be able to maintain piston body motion stabilization, the protrusion on slot both sides makes plunger upper
Tube wall inner wall salt crust, wax and dirt are prevented in lower motion process, while also attached wax deposition and heavy dirt on the inside of cleaning tube wall；Plunger
Material used in main body is solid foam discharging agent, and the raw materials used component of solid foam discharging agent indicates with mass percent, quality with gram
For unit, composition and component are as follows: polyethylene glycol 12~14%, partial hydrolysis polypropylene 5~7%, imidazoline 16~18%, polyoxy
Vinyl alkyl ether 12~15%, polyquaternium 10~20%, organophosphorus ester 15~20%, methacrylaldehyde 3~5%, dodecyl
Benzene sulfonic acid sodium salt 10~20%, carboxymethyl cellulose 5~10%；Then the bubble rod row is sunken to shaft bottom, carries out plunger lift draining
Liquid is lifted out well head in a manner of slug under the action of underground natural gas restores pressure by work, the bubble rod row；With plunger
The gradually dissolution of main body, after leakproofness reduces, which is sunken to shaft bottom and plays the role of foam discharging agent, and dissolution generates a large amount of bubbles
Foam carries out foam drainage gas recovery work；Two kinds of techniques of spontaneous carry out plunger lift liquid discharging gas producing and foam drainage gas recovery, process letter
Just, reach the optimum efficiency of water pumping gas production.
In a kind of above-mentioned plunger lift Combined Mining gas method integrated with foaming water discharge, the solid bubble of piston body is made
Agent is arranged, density is 1.10~1.30g/cm3, slightly larger than the density of water flooding；The hardness of piston body is stronger, be Rockwell 23~
27HRC, the hardness of plunger body are mainly determined that carboxymethyl cellulose is as adhesive, group by the formula of solid foam discharging agent
Piston body hardness can be determined by dividing；Plunger body engineering structure parameter are as follows: outer diameter variation range is 58.5~62mm, plunger main chamber
Body diameter is 10~15mm, plungers length 40cm.
Compared with prior art, the invention has the following advantages: (1) is by plunger lift liquid discharging gas producing and foaming water discharge
Gas production is used in combination, and step is simple, and benefit is evident, applied widely；(2) plunger is made of foam discharging agent, without recycling, save at
This；(3) solid foam discharging agent is injected into gas well, especially straight well pit shaft lowermost end, so that it is full of aerated fluid in entire pit shaft,
Water pumping gas production effect is obvious；(4) safety easy to operate, it is convenient to use, it is time saving and energy saving, it is low in cost, it is environmentally friendly.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the bubble rod row used in the present invention for doing plunger.
Fig. 2 is the cross-sectional view of bubble rod row structure shown in Fig. 1.
In figure: 1. fluid through-holes, 2. spiral yarn shaped dovetail grooves, 3. fluid passage aisles, 4. piston bodies, 5. plunger main chambers
Body.
Specific embodiment
The present invention will be further described with reference to the accompanying drawing.
As shown in Figure 1 and Figure 2, a kind of plunger lift Combined Mining gas method integrated with foaming water discharge of the present invention, first basis
The diameter of gas recovery well makes bubble rod row, and bubble rod row does plunger, and the shape of piston body 4 is cylindrical body, inside have plunger main chamber
Body 5, piston body 4 are uniformly distributed fluid through-hole 1 outside, and plunger main cavity 5 is connect with fluid through-hole 1 by fluid passage aisle 3, column
Plug main cavity 5 and fluid through-hole 1 are intended to improve plunger downstream rate, and 4 outer surface equidistantly distributed of piston body is spiral yarn shaped
Dovetail groove 2, fluid are rotationally advancing plunger in slot with spiral trajectory flowing, are able to maintain 4 motion stabilization of piston body, slot two
The protrusion on side makes plunger prevent tube wall inner wall salt crust, wax and dirt during up and down motion, while also attached on the inside of cleaning tube wall
Wax deposition and heavy dirt；Material used in piston body 4 is solid foam discharging agent, the raw materials used component quality of solid foam discharging agent
Percentage indicate, quality in grams, composition and component are as follows: polyethylene glycol 13%, partial hydrolysis polypropylene 6%, imidazoline
18%, polyoxyethylene alkyl ether 13%, polyquaternium 12%, organophosphorus ester 16%, methacrylaldehyde 4%, dodecyl benzene sulfonic acid
Sodium 11%, carboxymethyl cellulose 7%；Then the bubble rod row is sunken to shaft bottom, carries out plunger lift drainage works, which exists
Underground natural gas restores that liquid is lifted out well head in a manner of slug under the action of pressure；With the gradually dissolution of piston body 4,
After leakproofness reduces, which is sunken to shaft bottom and plays the role of foam discharging agent, and dissolution generates a large amount of foams, carries out foaming water discharge and adopts
Gas work；Two kinds of techniques of spontaneous carry out plunger lift liquid discharging gas producing and foam drainage gas recovery, simple flow can reach draining and adopt
The optimum efficiency of gas.
Make the solid foam discharging agent of piston body 4, density 1.20g/cm3, slightly larger than the density of water flooding.Plunger sheet
The hardness of body 4 is stronger, is Rockwell 26HRC, and the hardness of plunger body is mainly determined by the formula of solid foam discharging agent, and carboxymethyl is fine
Dimension element is used as adhesive, and component can determine piston body hardness.4 engineering structure parameter of piston body are as follows: outer diameter 60mm, column
Plug main cavity diameter is 12mm, plungers length 40cm.
The dosage of foam discharging agent and adhesive can be designed according to the actual condition of production, stratum characteristic and well depth structure,
To reach the optimum efficiency of water pumping gas production.This plunger lift compound gas production side integrated with foaming water discharge provided by the invention
Method, comprehensive plunger lift drainage technology and foam drainage gas recovery technique.In plunger lift bleeding stage, the plunger is natural in underground
Gas restores that liquid is lifted out well head in a manner of slug under the action of pressure, and it is small to slip loss.Plunger main cavity 5 and fluid through-hole
1 is intended to improve the downstream rate of plunger, and the spiral yarn shaped dovetail groove 2 of 4 outer surface equidistantly distributed of piston body, fluid is in slot
Plunger can be made to be rotationally advancing with spiral trajectory flowing, be able to maintain 4 motion stabilization of piston body, the protrusion on slot both sides makes plunger exist
Tube wall inner wall salt crust, wax and dirt are prevented during moving up and down, while also attached wax deposition and heavy dirt on the inside of cleaning tube wall.One
As the gradually dissolution of piston body 4, leakproofness reduce after the section time, which is sunken to the work that foam discharging agent is played in shaft bottom again
With, dissolution generates a large amount of foams, into the foam drainage gas recovery stage, plunger lift and the comprehensive use of foam drainage gas recovery, and process
Simplicity can reach the optimum efficiency of water pumping gas production.The density of this bubble rod row for making plunger provided by the invention is 1.20g/
cm3, slightly larger than the density of water flooding, it is therefore intended that plunger can be submerged under liquid level in the wellbore, play the role of plunger, simultaneously
Bubble rod row is lower than the position movement of liquid level in the wellbore when using as foam discharging agent, and keeps the lower resistance of motion.Plunger sheet
The hardness of body 4 is mainly determined that 4 hardness requirement of piston body is higher by the component of the carboxymethyl cellulose as adhesive, is
Rockwell 26HRC avoids intensity is too low from causing Premature disintegration, premature failure.Simple flow of the present invention, benefit is evident, the row of can reach
The optimum efficiency of hydromining gas.
Claims (4)
1. a kind of plunger lift Combined Mining gas method integrated with foaming water discharge, it is characterised in that: first according to the straight of gas recovery well
Diameter makes bubble rod row, and bubble rod row does plunger, and the shape of piston body (4) is cylindrical body, is internally provided with plunger main cavity
(5), it is uniformly distributed fluid through-hole (1) outside piston body (4), plunger main cavity (5) and fluid through-hole (1) pass through the fluid being arranged
Passage aisle (3) connection, the spiral yarn shaped dovetail groove (2) of piston body (4) outer surface equidistantly distributed；Piston body (4) is used
Material be solid foam discharging agent, the raw materials used component of solid foam discharging agent indicates with mass percent, quality in grams,
Composition and component are as follows: polyethylene glycol 12~14%, partial hydrolysis polypropylene 5~7%, imidazoline 16~18%, polyoxyethylene alkane
Base ether 12~15%, polyquaternium 10~20%, organophosphorus ester 15~20%, methacrylaldehyde 3~5%, dodecyl benzene sulfonic acid
Sodium 10~20%, carboxymethyl cellulose 5~10%；Then the bubble rod row is sunken to shaft bottom, carries out plunger lift drainage works, it should
Liquid is lifted out well head in a manner of slug under the action of underground natural gas restores pressure by bubble rod row；With piston body (4)
Gradually dissolution, after leakproofness reduces, which is sunken to shaft bottom and plays the role of foam discharging agent, and dissolution generates a large amount of foams, into
The work of row foam drainage gas recovery；Two kinds of techniques of spontaneous carry out plunger lift liquid discharging gas producing and foam drainage gas recovery, reach draining and adopt
The optimum efficiency of gas.
2. plunger lift according to claim 1 Combined Mining gas method integrated with foaming water discharge, it is characterised in that: system
Make the solid foam discharging agent of piston body, density is 1.10~1.30g/cm3, greater than the density of water flooding.
3. plunger lift according to claim 1 Combined Mining gas method integrated with foaming water discharge, it is characterised in that: column
Plug body hardness is stronger, is 23~27HRC of Rockwell.
4. plunger lift according to claim 1 Combined Mining gas method integrated with foaming water discharge, it is characterised in that: column
Plug body engineering structure parameter is that outer diameter variation range is 58.5~62mm, and plunger main cavity diameter is 10~15mm, and plunger is long
Degree is 40cm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710129344.6A CN106869865B (en) | 2017-03-06 | 2017-03-06 | A kind of plunger lift Combined Mining gas method integrated with foaming water discharge |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710129344.6A CN106869865B (en) | 2017-03-06 | 2017-03-06 | A kind of plunger lift Combined Mining gas method integrated with foaming water discharge |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106869865A CN106869865A (en) | 2017-06-20 |
| CN106869865B true CN106869865B (en) | 2019-08-02 |
Family
ID=59169585
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710129344.6A Active CN106869865B (en) | 2017-03-06 | 2017-03-06 | A kind of plunger lift Combined Mining gas method integrated with foaming water discharge |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106869865B (en) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109681169B (en) * | 2017-10-18 | 2021-05-28 | 中国石油化工股份有限公司 | Method for draining water and producing gas by adopting foam water draining agent composition in ultra-deep gas well |
| CN107975355B (en) * | 2017-10-30 | 2020-11-06 | 中国石油天然气股份有限公司 | Foam and plunger gas lift combined drainage gas recovery method and device |
| CN108102635B (en) * | 2017-12-21 | 2020-06-16 | 大庆金军石油科技开发有限公司 | Gas well drainage-assisting complexing agent |
| CN109736757B (en) * | 2019-01-03 | 2021-06-22 | 中国石油天然气集团有限公司 | Production increasing method for reducing pressure loss in gas well by using compressor |
| CN111764878A (en) * | 2020-07-07 | 2020-10-13 | 成都立联科能源科技有限公司 | Nano-foam lifting liquid drainage gas production rod and preparation method and application thereof |
| CN113046049B (en) * | 2021-03-29 | 2022-05-06 | 西南石油大学 | Multi-water-layer four-dispersion foam scrubbing agent for natural gas horizontal well |
| CN113292983A (en) * | 2021-06-15 | 2021-08-24 | 中石化重庆页岩气有限公司 | Floating foam discharging rod for gas production of oil and gas field and preparation method thereof |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202202844U (en) * | 2011-08-08 | 2012-04-25 | 中国石油天然气股份有限公司 | Piston tool equipped with adjustable by-pass valve |
| CN205936559U (en) * | 2016-08-17 | 2017-02-08 | 中国石油天然气股份有限公司 | Integrated device is arranged to gas well test bubble |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8607880B2 (en) * | 2005-02-24 | 2013-12-17 | Well Master Corp | Gas lift plunger acceleration arrangement |
-
2017
- 2017-03-06 CN CN201710129344.6A patent/CN106869865B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202202844U (en) * | 2011-08-08 | 2012-04-25 | 中国石油天然气股份有限公司 | Piston tool equipped with adjustable by-pass valve |
| CN205936559U (en) * | 2016-08-17 | 2017-02-08 | 中国石油天然气股份有限公司 | Integrated device is arranged to gas well test bubble |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106869865A (en) | 2017-06-20 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106869865B (en) | A kind of plunger lift Combined Mining gas method integrated with foaming water discharge | |
| CN102587865B (en) | Foam drainage gas recovery method for natural gas horizontal well | |
| CN108708693B (en) | A kind of closing fault block oil reservoir nitrogen compound throughput method | |
| CN101315025B (en) | Construction method for rock salt cavity gas storage house | |
| CN103867170B (en) | The method of a kind of low production and low pressure gas well automatic gas-producing foam discharge opeing | |
| CN103410486B (en) | A kind of three-in-one compound displacement technique for oil field deep transfer drive | |
| CN101718184A (en) | Foamed acid washing technological method for horizontal well | |
| CN110117487A (en) | It is a kind of for High angle-horizontal well water pumping gas production foam discharging agent | |
| CN107605425A (en) | Stratum raising formation strength method is cohered in closure in coal bed gas suede capsule drilling fluid | |
| CN106194076A (en) | A kind of ultra-deep salt mine horizontally-butted wells replaces mud and expanding method | |
| CN102720467B (en) | Residual acid flowback method after acid method hole-flushing in-situ leach of uranium | |
| CN110529084A (en) | A kind of hypertonic sandstone reservoir long well section steering distributary acid method | |
| CN204941394U (en) | A kind of with brill power cutting bed cleanout tool | |
| CN101691838B (en) | Ultralow permeability oil filed water injection well multicomponent chemical microemulsion pressure reduction and injection gain method | |
| CN101531891A (en) | Multifunctional nano-viscosity reduction profile control agent | |
| CN110029973A (en) | A kind of method that multiple dimensioned frozen glue dispersion improves reservoir water drive effect | |
| CN105840156B (en) | A kind of more slug compound displacement techniques | |
| CN105781494B (en) | A kind of liquid state colloid plunger lift water pumping gas production method | |
| CN104153744B (en) | Pore type geothermal well jet well-flushing device and method for jetting well-flushing by using same | |
| CN204113123U (en) | Anti-blockingly creep into slip casting composite drill bit | |
| CN202866774U (en) | Liquid pressure pulsation injector | |
| CN105131924B (en) | Spontaneous foam washing well liquid tackifier and flushing fluid preparation agents and flushing fluid | |
| CN206655684U (en) | A kind of oil gas field gas production floatation type bubble rod row | |
| CN105298385B (en) | A kind of boring method for reinforcing mud shale with boring | |
| CN203770102U (en) | Special sand-prevention and leak-proof drainage extraction tubing pump for coal-bed gas well drainage extraction |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| CB03 | Change of inventor or designer information |
Inventor after: Tan Xiaohua Inventor after: Mao Zhenglin Inventor after: Li Xiaoping Inventor after: Geng Xiaoyan Inventor after: Yang Jiarong Inventor after: He Xiliang Inventor after: Zhang Ming Inventor before: Tan Xiaohua Inventor before: Mao Zhenglin Inventor before: Geng Xiaoyan Inventor before: Yang Jiarong Inventor before: He Xiliang Inventor before: Zhang Ming |
|
| CB03 | Change of inventor or designer information | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |