CN101328798B - Method for extracting thick oil - Google Patents

Method for extracting thick oil Download PDF

Info

Publication number
CN101328798B
CN101328798B CN2008101174876A CN200810117487A CN101328798B CN 101328798 B CN101328798 B CN 101328798B CN 2008101174876 A CN2008101174876 A CN 2008101174876A CN 200810117487 A CN200810117487 A CN 200810117487A CN 101328798 B CN101328798 B CN 101328798B
Authority
CN
China
Prior art keywords
oil
thinner
water
iii
viscosity
Prior art date
Application number
CN2008101174876A
Other languages
Chinese (zh)
Other versions
CN101328798A (en
Inventor
付亚荣
董范
胡书宝
马永忠
张庚祥
尤冬青
孙玉民
李冬青
田炜
吕德福
郝玉军
蔡远红
郭小玉
常洪
孙学峰
Original Assignee
中国石油天然气股份有限公司
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by 中国石油天然气股份有限公司 filed Critical 中国石油天然气股份有限公司
Priority to CN2008101174876A priority Critical patent/CN101328798B/en
Publication of CN101328798A publication Critical patent/CN101328798A/en
Application granted granted Critical
Publication of CN101328798B publication Critical patent/CN101328798B/en

Links

Abstract

The invention provides a heavy oil cold production method applied to the production of oilfield heavy oil reservoirs at normal temperature and pressure. The method is characterized by comprising: a. a step of preparing water-soluble viscosity reducer I; b. a step of preparing viscosity reducer II; c. a step of preparing viscosity reducer III; d. a step of squeezing the water-soluble viscosity reducer I into oil reservoirs; and e. a step of using an oil pumping unit or screw pump lifting equipment to lift produced well fluid and adding the pitshaft viscosity reducer II or the pitshaft viscosity reducer III from an annular space between an oil pipe and an casing pipe of an oil well according to the different viscosity of produced fluid crude oil. The method has the advantages that: a chemical method is adopted to reduce the viscosity of heavy oil in the oil reservoirs and well fluid inside pitshafts, so as to improve heavy oil production effect; and the method has the continuous production time of the oil wells far more than that of the production methods in the prior art, greatly reduces production operation cost, and is obviously superior to the prior heavy oil production technology.

Description

A kind of method of thickened oil recovery
Technical field
The present invention relates to the oil field oil production method, particularly a kind of method of thickened oil recovery especially adopts the method crude oil extraction that reduces viscosity of crude.When being applicable to 50 ℃ of ground crude oil, viscosity of crude is 100mPas~10000mPas; Oil density is greater than 0.92g/cm in the time of 20 ℃ 3Freezing point is-20 ℃~50 ℃; Gum asphalt is greater than 25%; Sulfur-bearing is greater than 0.2%; Paraffin content is greater than 1.0%, the problem of the exploitation of normal temperature and pressure heavy crude reservoir.
Background technology
At present, the heating exploitation method is the traditional thickened oil recovery method in oil field, and its technological core is through oil reservoir or pit shaft being heated to reduce viscosity of crude, improving the mobile performance of crude oil, to reach the purpose that improves oil well output.Mainly contain methods such as steam injection, accompanying-heat cable, down-hole heating furnace, heating sucker rod, combustion in situ.Show that through production practices for many years its technology is ripe day by day, but ubiquity is invested height, the down-hole situation is complicated, and is high to the exploitation technical requirements, and water at the bottom of thin layer, mutual thin layer oil reservoir and the limit is enlivened problems such as oil reservoir bad adaptability.Therefore, the technician who is engaged in thickened oil recovery with diversion to the cold research of viscous crude with use.
Heavy oil cold flow production is meant the process of using conventional oil well pump and various non-thermal methods heavy crude producings, mainly contains methods such as pit shaft dosing, chemical plugging removal, screw pump, suction pump, air injection, notes nitrogen, caustic waterflooding.
Summary of the invention
The objective of the invention is: a kind of method of thickened oil recovery is provided, the thinner of a series mainly is provided, comprise that at oil well oil reservoir and well wellbore make reducing thick oil viscosity, improve the flowability of viscous crude.Viscosity, freezing point, paraffin content, gum asphaltic content and core intersection, effecive porosity, the permeability of crude oil are utilized 0.2%~2.0% water-soluble thinner I:50m during according to 50 ℃ of viscous crude 3~300m 3After clamp-oning oil reservoir, solve the problem that in-place oil flows into pit shaft; In pit shaft lifting process, when 50 ℃ of viscosity of extraction well liquid during, use thinner II and carry out the drag reduction viscosity reduction less than 5000mPa.s, when 50 ℃ of viscosity of extraction well liquid during greater than 5000mPa.s, thinner III,, utilize thinner III to carry out the drag reduction viscosity reduction.When realizing 50 ℃, ground viscosity of crude: 100mPas~10000mPas; In the time of 20 ℃, oil density is greater than 0.92g/cm 3Freezing point :-20 ℃~50 ℃; Gum asphalt is greater than 25%; Sulfur-bearing is greater than 0.2%; Paraffin content greater than: 1.0% the viscous crude crude oil of heavy crude reservoir is at normal temperatures and pressures more effectively exploited.
The technical scheme that the present invention is taked for its technical problem of solution is:
A kind of method of heavy oil cold flow production, the step of implementing this method is following:
1, the water-soluble thinner I of preparation: each components by weight of water-soluble thinner I: 3~5% NaOH; 2~6% polyethylene polyamine polyoxyethylene polyoxypropylene ether I; 8~10% sodium carbonate, 2~3.5% sodium butylnaphthalenesulfonates, 2~4.5% sodium acid carbonates; All the other are water, and each component weight percentage sum is 100%.
Capital equipment:
Enamel reaction still with stirring, heating, cooling and vacuum system.
Production method:
At first, NaOH, sodium carbonate and three kinds of raw materials of sodium acid carbonate are added enamel reaction still in proportion.Slowly be warmed up to 50~60 ℃, secondly, add 20% water, after constantly stirring 30 minutes, constantly adding polyethylene polyamine polyoxyethylene polyoxypropylene ether I, sodium butylnaphthalenesulfonate in proportion successively under the condition of stirring then; Add remaining water at last in proportion, stir while adding, stir after 20 minutes, stop heating, be stirred to the normal temperature discharging while cooling off, obtain water-soluble thinner I.
The code name of described polyethylene polyamine polyoxyethylene polyoxypropylene ether I is demulsifier AE7921, production unit: general petrochemical works, Changzhou.Polyethylene polyamine polyoxyethylene polyoxypropylene ether has introduction in " Chinese surfactant overview " (the 473rd page) book of Chemical Industry Press's publication of Huang Hongzhou chief editor.
Described sodium butylnaphthalenesulfonate has introduction in course teaching materials geared to the 21st century " oilfield chemistry " (the 302nd a page) book of Zhao Fulin chief editor's publishing house of China University Of Petroleum Beijing publication.
Described sodium butylnaphthalenesulfonate can adopt 2,6-di-t-butyl sodium naphthalene sulfonate, and consumption is identical.2, the molecular formula of 6-di-t-butyl sodium naphthalene sulfonate is: C18H23SO3Na.
2, preparation thinner II: each components by weight of thinner II: 45~50% crude benzol, 2~4% polyethylene polyamine polyoxyethylene polyoxypropylene ether II, all the other are the 200# solvent naphtha, each component weight percentage sum is 100%.
Above-mentioned crude benzol is the accessory substance (there is sale in market) that reclaims in the coal coking process, and its Main Ingredients and Appearance is benzene (molecular formula C 6H 6), toluene (molecular formula C 7H 8), xylenes (molecular formula C 8H 10).Therefore, the crude benzol among the present invention can adopt benzene, toluene or xylenes to replace.Crude benzol, benzene, toluene and xylenes all are good liquid fluxs, and use amount is identical.
Capital equipment:
Normal pressure enamel reaction still with stirring, heating, cooling and vacuum system.
Production method:
Crude benzol, polyethylene polyamine polyoxyethylene polyoxypropylene ether II and three kinds of components of 200# solvent naphtha are added enamel reaction still in proportion, and the limit edged stirs, and adds material and stirs after 60 minutes again and stop to stir discharging, obtains thinner II.
The code name of described polyethylene polyamine polyoxyethylene polyoxypropylene ether II is demulsifier AE8051, production unit: shore, Shandong group company.Polyethylene polyamine polyoxyethylene polyoxypropylene ether has introduction in " Chinese surfactant overview " (the 473rd page) book of Chemical Industry Press's publication of Huang Hongzhou chief editor.
3, preparation thinner III: each components by weight of thinner III: 30~35% polyethylene polyamine polyoxyethylene polyoxypropylene ether III, ethyl acetate (the molecular formula C of 5-8% 4H 8O 2), all the other are water, each component weight percentage sum is 100%.
Capital equipment:
Enamel reaction still with stirring, heating, cooling and vacuum system.
Production method:
Ethyl acetate and three kinds of components of water of polyethylene polyamine polyoxyethylene polyoxypropylene ether III, 5-8% are constantly being added enamel reaction still under the condition of stirring in proportion.Slowly be warmed up to 50~60 ℃, stir stop after 60 minutes the heating, be stirred to the normal temperature discharging while cooling off, obtain thinner III.
The code name of described polyethylene polyamine polyoxyethylene polyoxypropylene ether III is demulsifier AP121, production unit: Jinling Petrochemical Co.'s chemical industry two factories.Polyethylene polyamine polyoxyethylene polyoxypropylene ether has introduction in " Chinese surfactant overview " (the 471st page) book of Chemical Industry Press's publication of Huang Hongzhou chief editor.
4, oil reservoir is clamp-oned liquid and clamp-on oil reservoir: water and water-soluble thinner I be by weight being 100: 0.2~2.0, mixes to be mixed with oil reservoir and to clamp-on liquid; With 50m 3~300m 3Oil reservoir clamp-on liquid and clamp-on oil reservoir, built the pressure 24~48 hours.
Oil reservoir makes the reducing thick oil viscosity in the oil reservoir after clamp-oning liquid entering oil reservoir, improves the flowability of viscous crude in the oil reservoir, and the viscous crude that solves oilbearing stratum flows into the problem of pit shaft difficulty.It is the method commonly used that down-hole, oil field constructor knows that oil reservoir is clamp-oned the liquid method of clamp-oning oil reservoir and the method for building the pressure, and does not introduce in detail.
5, adopt oil pumper or screw pump lifting equipment lifting extraction well liquid; And the viscosity when detecting 50 ℃ of extraction well liquid.Oil pumper or screw pump lifting extraction well liquid viscosity method when detecting 50 ℃ of extraction well liquid is that those skilled in the art know technology, does not introduce in detail.
When 50 ℃ of viscosity of extraction well liquid during, add thinner II from the annular space between oil well oil conduit and the sleeve pipe, the extraction of lifting simultaneously well liquid less than 5000mPa.s.The adding weight of thinner II and oil well liquid-producing volume ratio are 600~800 milligrams: 1 liter.Such as: oil well liquid-producing is 10m 3/ d, the dosing cycle is 7 days, 7 days production fluid amount adds up to 70m so 3, adding dose so is 42kg~56kg.If the dosing cycle is 10 days, 10 days production fluid amount adds up to 100m so 3, adding dose so is 60kg~80kg.
When 50 ℃ of viscosity of extraction well liquid during, add thinner III from the annular space between oil well oil conduit and the sleeve pipe, the extraction of lifting simultaneously well liquid greater than 5000mPa.s.The adding weight of thinner III liquid and oil well liquid-producing volume ratio are 400~600 milligrams: 1 liter.
The component of 3 same being named as of use " polyethylene polyamine polyoxyethylene polyoxypropylene ether " has a plurality of products all to be this name in the above-mentioned explanation on the market.Their manufacturer is different, and molecular weight is also different, and the product code name is different.For using same name " polyethylene polyamine polyoxyethylene polyoxypropylene ether " component to distinguish, after " polyethylene polyamine polyoxyethylene polyoxypropylene ether ", be marked with the differentiation symbol of I, II or III to 3 times.
Adding the thinner method from the annular space between oil well oil conduit and the sleeve pipe is that those skilled in the art know technology, does not introduce in detail.
Beneficial effect of the present invention: the thickened oil recovery method that the present invention adopts is different with existing thickened oil recovery method.Adopt chemical method to make reducing thick oil viscosity in the oil reservoir, improve the flowability of viscous crude in the oil reservoir, the viscous crude that solves oilbearing stratum flows into the problem of pit shaft difficulty; And distinguish the viscosity of 50 ℃ of extraction well liquid, and add different pit shaft property drag reduction viscosity reduction liquid from oil well oil conduit with annular space between the sleeve pipe, reduce the viscosity of well liquid in the pit shaft, improve the thickened oil recovery effect.The continuous production time of oil well is far longer than the exploitation method of prior art, and the production run cost reduces significantly, obviously is superior to existing thickened oil recovery technology.On average descending the pump degree of depth at the middle and south, North China Oilfield Ji heavy crude reservoir is to test in 54 mouthfuls of heavy oil wells of 1439m, adds up the crude oil 52.940 * 10 of producing more 4Ton.The average pump detection period of individual well 816 days.
The specific embodiment
Utilize the present invention in North China Oilfield is recovered the oil a plurality of heavy crude reservoirs of five factories, to test, all receive significant development effectiveness.With the Shen Nan oil field is that example describes.
Embodiment 1: pool 70 heavy crude reservoirs in Shen Nan oil field, and oil reservoir is being grown Qp from top to bottom, Nm, Ng, Ed and Es stratum, oil reservoir mainly is distributed in Ed, dark 2400m during oil reservoir is average, its reservoir physical property is: degree of porosity is: 15%~25.5%; Permeability is: 208 * 10 -3~2290 * 10 -3μ m 2Ground viscosity of crude: (50 ℃) 1157~85085mPa.s; 20 ℃ of oil density: 0.9442~1.0035g/cm 3Freezing point: 20~40 ℃; Gum asphalt: 29.38%~71.23%; Sulfur-bearing: 0.4%~0.82%; The content of wax: 1.56~10.75%; Oil reservoir average temperature: 93.4 ℃; Geothermal gradient: 3.34 ℃/100m; Original formation pressure: 23.08MPa; Pressure coefficient: 0.99, belong to normal temperature, normal pressure heavy crude reservoir.
When developing this oil reservoir, recording damp 70 fault block viscous crude acid numbers at 1.26~1.85mgKOH/g, belong to strong active viscous crude, taked following steps during practical implementation, is example with damp 70-23 well, further explain.
Pool 70-23 well reservoir physical property is: effecive porosity is: 19.8%; Permeability is: 1042.3 * 10 -3μ m 2, ground viscosity of crude: (50 ℃) 4386.2mPa.s; 20 ℃ of oil density: 0.9985g/cm 3, freezing point: 27 ℃; Gum asphalt: 58.4%; Sulfur-bearing: 0.76%; The content of wax: 7.5%, reservoir temperature: 94.3 ℃, geothermal gradient: 3.34 ℃/100m, original formation pressure: 24.3MPa, pressure coefficient: 0.99; Acid value for crude oil is at 1.57mgKOH/g.
1, the water-soluble thinner I of preparation: each components by weight of water-soluble thinner I: 3.5% NaOH, 4.5% code name demulsifier AE7921,2.8% sodium butylnaphthalenesulfonate, 8.5% sodium carbonate, 3.0% sodium acid carbonate, all the other are water, and each component weight percentage sum is 100%.
At first, NaOH, carbonic acid and three kinds of components of carbonic acid are added enamel reaction still in proportion.Slowly be warmed up to 55 ℃, secondly, add 20% of water consumption, constantly stirring 30 minutes, constantly adding demulsifier AE7921, sodium butylnaphthalenesulfonate in proportion successively under the condition of stirring then; Add remaining water at last in proportion, stir while adding, stir after 20 minutes, stop heating, be stirred to the normal temperature discharging while cooling off, obtain water-soluble thinner I.
2, water-soluble thinner I is clamp-oned oil reservoir: water and water-soluble thinner I be by weight being 100: 1.2, mixes to be mixed with oil reservoir and to clamp-on liquid; With 150m 3Oil reservoir clamp-on liquid and clamp-on oil reservoir; Built the pressure 30 hours.
3, adopt lifting equipment oil pumper lifting extraction well liquid; And detect the viscosity obtain 50 ℃ of extraction well liquid be 4834mPa.s (because of sample time different, the viscosity number of mensuration has certain fluctuation);
4, preparation thinner II: each components by weight of thinner II: 47.5% crude benzol, 3.0% demulsifier AE8051, all the other are the 200# solvent naphtha, each component weight percentage sum is 100%.
The method for preparing oil-soluble viscosity reducer II: crude benzol, demulsifier AE8051 and three kinds of components of 200# solvent naphtha are added enamel reaction still in proportion, and the limit edged stirs, and adds material and stirs after 60 minutes again and stop to stir discharging, obtains oil-soluble viscosity reducer II.
5, last, add oil-soluble viscosity reducer II from the annular space between oil well oil conduit and the sleeve pipe, the extraction of lifting simultaneously well liquid.The adding weight of oil-soluble viscosity reducer II and oil well liquid-producing volume ratio are 700 milligrams: 1 liter.
Embodiment 2: damp 70-25 well, ground viscosity of crude: (50 ℃) 9886.2mPa.s;
1, adopts the step 1 of embodiment 1.
2, adopt the step 2 of embodiment 1.
3, adopt lifting equipment oil pumper lifting extraction well liquid; And detect the viscosity obtain 50 ℃ of extraction be 9812.3mPa.s (because of sample time different, the viscosity number of mensuration has certain fluctuation);
4, preparation thinner III: each components by weight of thinner III: 32% demulsifier AP121,6.2% ethyl acetate, all the other are water, and each component weight percentage sum is 100%.
The method for preparing thinner III: demulsifier AP121, ethyl acetate and three kinds of components of water are constantly being added enamel reaction still under the condition of stirring in proportion.Slowly be warmed up to 55 ℃, stir stop after 60 minutes the heating, be stirred to the normal temperature discharging while cooling off, obtain thinner III.
5, add thinner III from the annular space between oil well oil conduit and the sleeve pipe, the extraction of lifting simultaneously well liquid.The adding weight of thinner III liquid and oil well liquid-producing volume ratio are 430 milligrams: 1 liter.
In adopting thickened oil recovery process of the present invention, the drag reduction viscosity break ratio reaches more than 75%, and on average descend the pump degree of depth at the middle and south, North China Oilfield Ji heavy crude reservoir is to test in 54 mouthfuls of heavy oil wells of 1439m, adds up many production crude oil 52.940 * 10 4Ton.The average pump detection period of individual well 816 days.
Embodiment 3-5: each weight percentages of components is tabulated as follows: each component weight percentage sum is 100%.(what adopt among the embodiment 5 is 2,6-di-t-butyl sodium naphthalene sulfonate)

Claims (5)

1. the method for a heavy oil cold flow production, it is characterized in that: the step of this method is following:
A, the water-soluble thinner I of preparation: each components by weight of water-soluble thinner I: 3~5% NaOH, 2~6% polyethylene polyamine polyoxyethylene polyoxypropylene ether I, 8~10% sodium carbonate, 2~3.5% sodium butylnaphthalenesulfonates, 2~4.5% sodium acid carbonates; All the other are water, and each component weight percentage sum is 100%;
The method for preparing water-soluble thinner I:
At first, NaOH, sodium carbonate and three kinds of components of sodium acid carbonate are added enamel reaction still in proportion; Slowly be warmed up to 50~60 ℃, secondly, add 20% water, stirred 30 minutes, constantly adding polyethylene polyamine polyoxyethylene polyoxypropylene ether I, sodium butylnaphthalenesulfonate in proportion successively under the condition of stirring then; Add remaining water at last in proportion, stir while adding, stirred 20 minutes, stop heating, be stirred to the normal temperature discharging while cooling off, obtain water-soluble thinner I;
B, preparation thinner II: each components by weight of thinner II: 45~50% crude benzol, 2~4% polyethylene polyamine polyoxyethylene polyoxypropylene ether II, all the other are the 200# solvent naphtha, each component weight percentage sum is 100%;
The method for preparing thinner II:
Crude benzol, polyethylene polyamine polyoxyethylene polyoxypropylene ether II and three kinds of raw materials of 200# solvent naphtha are added enamel reaction still in proportion, and the limit edged stirs, and adds material and stirs after 60 minutes again and stop to stir discharging, obtains thinner II;
C, preparation thinner III: each components by weight of thinner III: 30~35% polyethylene polyamine polyoxyethylene polyoxypropylene ether III, the ethyl acetate of 5-8%, all the other are water, and each component weight percentage sum is 100%;
The method for preparing thinner III:
Ethyl acetate and three kinds of components of water of polyethylene polyamine polyoxyethylene polyoxypropylene ether III, 5-8% are constantly being added enamel reaction still under the condition of stirring in proportion; Slowly be warmed up to 50~60 ℃, stir stopped in 60 minutes the heating, be stirred to the normal temperature discharging while cooling off, obtain thinner III;
D, oil reservoir is clamp-oned liquid clamp-on oil reservoir: water and water-soluble thinner I be by weight being 100: 0.2~2.0, mixes to be mixed with oil reservoir and to clamp-on liquid; With 50m 3~300m 3Oil reservoir clamp-on liquid and clamp-on oil reservoir, built the pressure 24~48 hours;
E, oil recovery: adopt oil pumper or screw pump lifting equipment lifting extraction well liquid; And the viscosity when detecting 50 ℃ of extraction well liquid;
50 ℃ of viscosity of extraction well liquid add thinner II from the annular space between oil well oil conduit and the sleeve pipe during less than 5000mPa.s, the extraction of lifting simultaneously well liquid; The adding weight of thinner II and oil well liquid-producing volume ratio are 600~800 milligrams: 1 liter;
Or 50 ℃ of viscosity of extraction well liquid add thinner III from the annular space between oil well oil conduit and the sleeve pipe during greater than 5000mPa.s, the extraction of lifting simultaneously well liquid; The adding weight of thinner III liquid and oil well liquid-producing volume ratio are 400~600 milligrams: 1 liter;
The code name of polyethylene polyamine polyoxyethylene polyoxypropylene ether I is demulsifier AE7921;
The code name of polyethylene polyamine polyoxyethylene polyoxypropylene ether II is demulsifier AE8051;
The code name of polyethylene polyamine polyoxyethylene polyoxypropylene ether III is demulsifier AP121.
2. the method for heavy oil cold flow production as claimed in claim 1, it is characterized in that: described crude benzol is a benzene.
3. the method for heavy oil cold flow production as claimed in claim 1, it is characterized in that: described crude benzol is a toluene.
4. the method for heavy oil cold flow production as claimed in claim 1, it is characterized in that: described crude benzol is an xylenes.
5. like the method for claim 1,2,3 or 4 described heavy oil cold flow productions, it is characterized in that: described sodium butylnaphthalenesulfonate is 2,6-di-t-butyl sodium naphthalene sulfonate.
CN2008101174876A 2008-07-31 2008-07-31 Method for extracting thick oil CN101328798B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN2008101174876A CN101328798B (en) 2008-07-31 2008-07-31 Method for extracting thick oil

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN2008101174876A CN101328798B (en) 2008-07-31 2008-07-31 Method for extracting thick oil

Publications (2)

Publication Number Publication Date
CN101328798A CN101328798A (en) 2008-12-24
CN101328798B true CN101328798B (en) 2012-03-07

Family

ID=40204788

Family Applications (1)

Application Number Title Priority Date Filing Date
CN2008101174876A CN101328798B (en) 2008-07-31 2008-07-31 Method for extracting thick oil

Country Status (1)

Country Link
CN (1) CN101328798B (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106893572A (en) * 2017-03-13 2017-06-27 中山市绿浪助剂有限公司 A kind of heavy oil cold flow production auxiliary agent

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101852073B (en) * 2009-11-13 2013-01-16 新疆德蓝股份有限公司 Novel integration technique for improving recovery ratio of thick oil with high thickness and low yield
CN107130950A (en) * 2010-04-12 2017-09-05 盘锦河升大地石油科技有限公司 A kind of exploitation method of thick oil type oil deposit
CN102373077B (en) * 2010-08-25 2014-01-15 中国石油天然气股份有限公司 Extra-heavy oil functional demulsifier as well as preparation and application thereof
CN102010703B (en) * 2010-11-27 2012-10-03 成都孚吉科技有限责任公司 Thickened oil cold production displacement agent for thickened oil production and preparation process thereof
CN102364206A (en) * 2010-12-14 2012-02-29 新疆德蓝股份有限公司 New method for reducing viscosity of thickened oil for oil and gas extraction
CN102635343B (en) * 2012-04-13 2014-11-19 中国石油天然气股份有限公司 Method for lifting heavy oil through shaft in heavy oil cold production
CN102852489B (en) * 2012-09-04 2014-11-26 中国石油天然气股份有限公司 Method for treating cold oil extraction layer of thickened oil
CN105112039B (en) * 2015-06-30 2018-07-20 中国石油化工股份有限公司 A kind of high temperature resistant oil-soluble viscosity reducer and preparation method thereof
CN106988714B (en) * 2017-04-10 2019-10-18 中国石油化工股份有限公司 A kind of super-viscous oil drop sticking method
CN107143319A (en) * 2017-06-29 2017-09-08 新疆科力新技术发展股份有限公司 The cold method adopted of shallow oil reservoir reducing thick oil viscosity
CN107893648B (en) * 2017-12-19 2019-06-18 北京百利时能源技术股份有限公司 The cold mining method of heavy crude reservoir carbon dioxide accumulation of energy high pressure viscosity reduction
CN109973064A (en) * 2019-03-26 2019-07-05 长沙而道新能源科技有限公司 A kind of oil exploitation method

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN88105018A (en) * 1988-02-01 1988-12-21 辽河石油学校 Method of thick-oil viscosity depression by emulsification
WO2005111372A1 (en) * 2004-05-17 2005-11-24 Caltec Limited System and method for the production or handling of heavy oil
CN1861979A (en) * 2006-06-23 2006-11-15 中国石油天然气股份有限公司 Method of heavy oil cold flow production

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN88105018A (en) * 1988-02-01 1988-12-21 辽河石油学校 Method of thick-oil viscosity depression by emulsification
WO2005111372A1 (en) * 2004-05-17 2005-11-24 Caltec Limited System and method for the production or handling of heavy oil
CN1861979A (en) * 2006-06-23 2006-11-15 中国石油天然气股份有限公司 Method of heavy oil cold flow production

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
付亚荣等.稠油油藏聚驱后采出液脱水用破乳剂.《油田化学》.2007,第24卷(第3期), *

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106893572A (en) * 2017-03-13 2017-06-27 中山市绿浪助剂有限公司 A kind of heavy oil cold flow production auxiliary agent

Also Published As

Publication number Publication date
CN101328798A (en) 2008-12-24

Similar Documents

Publication Publication Date Title
CN104989361B (en) A kind of method that auxiliary water horizontal well man-made fracture turns to transformation
CN103740353B (en) A kind of composite blockage relieving agent and tight sandstone reservoir fracturing production horizontal well composite blockage relieving method
CN103320104B (en) A kind of water-in-oil-type biofuel base drilling fluid and preparation method thereof
CN105003237A (en) Apparatus and method for integrated processing of natural gas hydrate exploitation by geothermy and waste CO2 reinjection
CN103160259A (en) 255 DEG C superhigh temperature resistant water-based drilling fluid and construction process thereof
CN101839123B (en) Exploitation method for wax precipitation oil reservoir
CN104152133A (en) Carbon dioxide fracturing fluid and preparation method thereof
CN101549266B (en) Preparation of surfactant of double long-chain alkyl lycine and applications thereof
Reynolds et al. Produced water and associated issues
US3730273A (en) Improved technique for injecting fluids into subterranean formations
CN101793138B (en) Hydrocyclone and screw pump combined downhole oil-water separation method
CN102453480B (en) Clean viscous acid for acid fracturing of carbonate reservoir
CN102796498A (en) Foam drilling fluid
CN102733789B (en) Staged fracturing construction yield increment method for waterpower in deep thickened oil deposit thick-bedded sandstone storage layer
CN102071919B (en) Oil-gas well fiber assisted water control fracturing method
CN101699026B (en) Hyposmosis oil pool microbial oil recovery method
CN104727799A (en) Pulse sand fracturing method realizing high fracture conductivity of cracks
CN102838781A (en) Ultra-temperature organic zirconium crosslinker suitable for polymer crosslinking and prepared fracturing solutions of ultra-temperature organic zirconium crosslinker
CN101787864B (en) Method for plugging water from oil reservoir fractured water logging oil well developed by injecting water into low-permeable reservoir stratum
CN103032056B (en) A kind of method and apparatus being applicable to the viscosity reducing of super heavy oil recovery
CN102022105A (en) Large composite acid fracturing method of fracture cave type carbonate rock reservoir
CN102635344A (en) Composite blocking-removal method for improving flow conductivity of triple-low sandstone reservoir
CN104989341B (en) A kind of method for determining low-permeability oil deposit effective displacement injector producer distance
CN1200070C (en) Viscosity reducing and drag reducing agent for high viscosity well
CN102002350B (en) Superhigh temperature water base drilling fluid

Legal Events

Date Code Title Description
PB01 Publication
C06 Publication
SE01 Entry into force of request for substantive examination
C10 Entry into substantive examination
GR01 Patent grant
C14 Grant of patent or utility model