CN101121883A - Water soluble friction reducer used for thick oil well and preparation method thereof - Google Patents
Water soluble friction reducer used for thick oil well and preparation method thereof Download PDFInfo
- Publication number
- CN101121883A CN101121883A CNA2007101197303A CN200710119730A CN101121883A CN 101121883 A CN101121883 A CN 101121883A CN A2007101197303 A CNA2007101197303 A CN A2007101197303A CN 200710119730 A CN200710119730 A CN 200710119730A CN 101121883 A CN101121883 A CN 101121883A
- Authority
- CN
- China
- Prior art keywords
- water
- oil
- percent
- oil well
- thick
- 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.)
- Granted
Links
Landscapes
- Lubricants (AREA)
Abstract
The invention discloses a water-soluble friction-reducing additive for thick-oil wells, applied to thick-oil wells (with water content over 25 percent) for paraffin removal and viscosity reduction. The raw materials include (calculated by weight percent) A. fatty-acid polyoxyethylene (9) ester 2-10 percent; B. polyoxypropene polyoxy propylene propylene glycol ether 10-30 percent; C. polyether glycol SAA 5-15 percent; D. FC-N01 fluorocarbon surfactant 0.01-0.07 percent; E. water (the remainder). If the water-soluble friction-reducing additive is applied to thick-oil wells with water content over 25 percent, the paraffin is removed and the viscosity is reduced in the oil-well, the production cost is lowered and the output is increased. In addition, the water-soluble friction-reducing additive is also applicable to cold production and cold transportation of thick-oil well with medium/high water content. The water-soluble friction-reducing additive is inflammable, and capable to overcome the disadvantages of existing oil-well friction-reducing additives, such as oil-soluble and flammable.
Description
Technical field
The present invention relates to the oilfield chemical technology field, particularly a kind of water soluble friction reducer used for thick oil well, a kind of water-soluble flow improver prescription that wax removal, viscosity reduction use and preparation method thereof that carries out in moisture heavy oil wells greater than 25%.
Background technology
The exploitation of heavy crude reservoir is a technical barrier.Viscous crude viscosity height, mobile poor in the pit shaft lifting in the percolation in oil bearing ability, be the major cause that causes the difficulty of recovering the oil.The district carries out oil well viscosity reduction Study on Technology and application at viscous crude oil, improves heavy oil block exploitation present situation, further excavates the viscous crude resource and has very important significance.
At present, in the heavy oil wells exploitation, majority is to adopt the chemical viscosity reduction measure.Though applied viscosity-depression agent has good viscosity reducing effect, the flash-point of viscosity-depression agent itself is between 10～15 ℃, to using and preserving and brought huge potential safety hazard.
Summary of the invention
The objective of the invention is: a kind of water soluble friction reducer used for thick oil well and preparation method thereof is provided.Obtain water soluble friction reducer used for thick oil well and have the viscous crude drag-reduction effect, and utilize the non-inflammability of water-soluble flow improver, overcoming present heavy oil wells wax removal viscosity reduction medicament commonly used, to have a flash-point low, has the deficiency of potential safety hazard.
The technical scheme that the present invention is taked for its technical problem of solution is:
The starting material of water soluble friction reducer used for thick oil well comprise:
A, aliphatic acid polyethenoxy (9) ester, its molecular formula is: RCOO (CH
2CH
2O)
9H
The Huang Hongzhou chief editor, the 365th page of Chemical Industry Press China tensio-active agent overview.
Character: dark brown oily liquids, nontoxic, soluble in water, have good emulsifying, washing performance.
Manufacturer: general petrochemical works, Hai'an, four directions, Dalian associating chemical industry company limited, the great first Fine Chemical Co., Ltd in Tianjin, Shanghai Assistant Agent Factory Co., Ltd., fine chemistry industry company of Shanghai Gaoqiao petro-chemical corporation.
B, polyoxyethylene polyoxypropylene propylene glycol; (industrial goods) (Huang Hongzhou chief editor, the 482nd page of Chemical Industry Press China tensio-active agent overview).
Character: faint yellow thick liquid, soapy flavor is arranged, soluble in water.
Purposes: the emulsification of crude oil dewatering agent, have the viscosity reduction effect concurrently, prevent stifled well.
Manufacturer: Binhua Group Co., Ltd., Shandong, Organic Synthetic Factory, Dalian Petrochemical Co. of CNPC.
C, polyether glycol type SAA (industrial goods) (Huang Hongzhou chief editor, the 485th page of Chemical Industry Press China tensio-active agent overview).
Character: mostly be the yellow transparent fluid under the normal temperature to the milk yellow lotion, in the organic solvent such as water-soluble mostly, ethanol, benzene, toluene and dimethylbenzene.
Manufacturer: Jidong Petroleum Survey Development Co.
D, FC-N01 fluorocarbon surfactant, its molecular formula is:
C
3F
7O (C
3F
6)
nC
2F
4CO
2C
2H
4N (C
2H
4OH)
2Wherein: n=2-4
Quality index: little yellow or amber thick liquid, surface tension is less than 16.8 milli Newton/meter.
Characteristic: be a kind of novel cation fluorocarbon surfactant, have non-ionic character simultaneously, can obviously improve wetting, diffusion, emulsification, flow leveling.
Manufacturer: Shanghai Zhongke Hechen Co., Ltd..
E, water.
Starting material component weight ratio is:
A, aliphatic acid polyethenoxy (9) ester: 2-10%;
B, polyoxyethylene polyoxypropylene propylene glycol: 10-30%;
C, polyether glycol type SAA:5-15%;
D, FC-N01 fluorocarbon surfactant: 0.01-0.07%
E, all the other are water.
Two, the production method of water soluble friction reducer used for thick oil well
Major equipment:
Normal pressure enamel reaction still with stirring, heating, cooling and vacuum system.
Production method:
At first, four kinds of raw materials such as aliphatic acid polyethenoxy (9) ester, polyoxyethylene polyoxypropylene propylene glycol, polyether glycol type SAA, FC-N01 fluorocarbon surfactant are added the normal pressure enamel reaction still in proportion.Slowly be warmed up to 90-95 ℃.Under constantly stirring, add entry, continue to stir after 20-40 minute, stop heating.Stir while cooling off, be cooled to normal temperature.Stir discharging after 15-30 minute, obtain water soluble friction reducer used for thick oil well.
The invention has the beneficial effects as follows: use water-soluble flow improver moisture on greater than 25% heavy oil wells, dosage can satisfy the wax removal viscosity reduction requirement of oil well when 100～150mg/1, improve pump efficiency and prolong the pump life-span, reduces production costs, and increases output.Simultaneously, also can be applicable in high moisture heavy oil wells cold adopt cold defeated.Water-soluble drag-reducing agent for oil well of the present invention is not flammable, has broken for a long time that well subtraction blocking belongs to oil soluble, inflammable deficiency.
Embodiment
Utilize the present invention in the Shen Nan oil field of North China Oilfield the 5th oil recovery factory, Ulmaceae oil field, etc. to suck water surplus 110 on probation greater than 25% heavy oil wells, dosage when 150～200mg/l, solved heavy oil wells clear wax control, viscosity reduction and in high-water-cut oil-producing well cold adopt cold defeated problem.
Embodiment 1: water soluble friction reducer used for thick oil well starting material component weight ratio is: aliphatic acid polyethenoxy (9) ester: 6%; Polyoxyethylene polyoxypropylene propylene glycol: 28%; FC-N01 fluorocarbon surfactant: 0.05%; Polyether glycol type SAA:7%; Water: 58.95%.
Process for preparation: four kinds of raw materials such as aliphatic acid polyethenoxy (9) ester, polyoxyethylene polyoxypropylene propylene glycol, polyether glycol type SAA, FC-N01 fluorocarbon surfactant are added the normal pressure enamel reaction still in proportion.Slowly be warmed up to 90 ℃.Under constantly stirring, add entry, continue to stir after 30 minutes, stop heating.Stir while cooling off, be cooled to normal temperature.Stir discharging after 25 minutes, obtain water soluble friction reducer used for thick oil well.
Effect assessment:
Zhao 61-3, Zhao 61-6, Zhao 61-9, Zhao 61-2, Zhao 61-5 are 5 mouthfuls of well serial flows, and Zhao 61-8 enters the station separately, and for reducing running cost, in July, 2003, we have formulated the cold defeated experimental program of Zhao's 61 fault blocks.Began experiment July 14.Add the water-soluble flow improver of 3kg every day from sleeve pipe, move 7 days, stop recirculated water, Oil Well Back Pressure maintains 0.2～0.28MPa.Simultaneously, the hot washing period of oil well has on average prolonged 3.64 times.Effect comparison such as following table:
| Pound sign | Zhao 61-3 | Zhao 61-9 | Zhao 61-6 | Zhao 61-2 | Zhao 61-5 | Zhao 61-8 | |
| Crude oil property | 20 ℃ of density | 0.9252 | 0.8957 | 0.8993 | 0.9047 | 0.8968 | 0.9054 |
| 50 ℃ of viscosity mPa.s | 354.15 | 49.8 | 58.02 | 140.4 | 53.6 | 76.73 | |
| Zero pour ℃ | 6.1 | 8 | 10.17 | 9.3 | 8.2 | 3.8 | |
| Content of wax % | 15 | 17 | 16.0 | 10 | 4 | 11 | |
| Colloidal bitumen % | 49.7 | 31.7 | 35.39 | 41.4 | 33.0 | 37 | |
| Moisture % | 38 | 87 | 59 | 88 | 76 | 30 | |
| Back pressure MPa before the dosing | 0.65 | 0.35 | 0.65 | 0.2 | 0.2 | 0.35 | |
| Back pressure MPa after the dosing | 0.25 | 0.28 | 0.25 | 0.2 | 0.2 | 0.25 | |
| Add dose Kg/d | 3 | 3 | 3 | 3 | 3 | 3 | |
| Test conditions | Stop recirculated water | Stop recirculated water | Stop recirculated water | Stop recirculated water | Stop recirculated water | Stop recirculated water | |
Embodiment 2: water soluble friction reducer used for thick oil well starting material component weight ratio is: aliphatic acid polyethenoxy (9) ester: 6%; Polyoxyethylene polyoxypropylene propylene glycol: 28%; FC-N01 fluorocarbon surfactant: 0.05%; Polyether glycol type SAA:7%; Water: 58.95%.
Preparation process is identical with embodiment 1.
Effect assessment:
Water soluble friction reducer used for thick oil well is in the routine maintenance of damp 70 heavy crude reservoir oil wells, and dosage has satisfied the ordinary production of oil well when 180mg/l.Effect comparison such as following table:
| Project | Pool 70-4 | Pool 70-5 | Pool 70-8 | Pool 70-1 | |
| 50 ℃ of viscosity (mPas) | Before the dosing | 4147.16 | 7710.92 | 7796.0 | 3635.79 |
| After the dosing | 1376.4 | 1432.5 | 1783.1 | 916.7 | |
| Reduced rate (%) | 66.8 | 81.4 | 77.1 | 74.8 | |
| Zero pour (℃) | Before the dosing | 23 | 27 | 25 | 26 |
| After the dosing | 21 | 24 | 22 | 22 | |
| The reduction value | 2 | 3 | 3 | 4 | |
| Back pressure (MPa) | Before the dosing | 1.4 | 2.8 | 1.2 | 1.0 |
| After the dosing | 0.85 | 1.15 | 0.8 | 0.57 | |
| Reduced rate (%) | 39.3 | 58.9 | 33.3 | 25.0 | |
Embodiment 3: water soluble friction reducer used for thick oil well starting material component weight ratio is: aliphatic acid polyethenoxy (9) ester that Shanghai Assistant Agent Factory Co., Ltd. produces: 6%; The polyoxyethylene polyoxypropylene propylene glycol that Binhua Group Co., Ltd., Shandong produces: 28%; FC-N01 fluorocarbon surfactant: 0.05%; The polyether glycol type SAA:7% that Jidong Petroleum Survey Development Co produces; Water: 58.95%.
Preparation process is identical with embodiment 1.
Effect assessment:
| Pound sign | Relative density | 50 ℃ of viscosity mPa.s | Zero pour ℃ | Content of wax % | Colloid. drop matter % | First key ingredient | Second key ingredient |
| X-10 | 0.9344 | 3608.0 | 55 | 18.9 | 48.1 | 36 | 24.1 |
| X-12 | 0.9287 | 1779.5 | 41 | 19.7 | 41.8 | 35.3 | 25.0 |
The X-10 well has been failed ordinary production always since going into operation, add water soluble friction reducer used for thick oil well after, when it added dose and is 200mg/l, oil well production was normal.Hot washing period extended to 213 days by 10 days.Be shown in X-10 well rig-site utilization data as can be seen from table: in a dosing cycle, the oil well electric current descends, and maximum load descends, and former oil freezing point descends, and illustrates that the viscosity of crude on the oil well has obtained reduction, and the resistance to flow of crude oil reduces.
| Time (month, day) | Oil pumper electric current (A) | Oil pumper load (KN) | 50 ℃ of viscosity mpa.s | Zero pour ℃ | ||
| Up | Descending | Up | Descending | |||
| January 18 | 102 | 48 | 115 | 28.4 | 3594 | 54 |
| January 19 | 95 | 50 | 103 | 30.7 | 2183 | 47 |
| January 21 | 85 | 55 | 94.3 | 37.6 | 473 | 46 |
| January 23 | 85 | 55 | 91.2 | 39.1 | 428 | 46 |
| January 26 | 84 | 55 | 90.7 | 39.6 | 413 | 46 |
| January 30 | 86 | 57 | 89.4 | 40.7 | 441 | 45 |
| February 02 | 89 | 52 | 91.3 | 38.5 | 547 | 46 |
| February 04 | 93 | 51 | 97.4 | 36.4 | 1081 | 48 |
| February 06 | 95 | 50 | 103.1 | 35.7 | 1125 | 48 |
Claims (2)
1. water soluble friction reducer used for thick oil well, it is characterized in that: starting material component weight ratio is:
A, aliphatic acid polyethenoxy (9) ester: 2-10%;
B, polyoxyethylene polyoxypropylene propylene glycol: 10-30%;
C, polyether glycol type SAA:5-15%;
D, FC-N01 fluorocarbon surfactant: 0.01-0.07%;
E, all the other are water.
2. according to the preparation method of the described water soluble friction reducer used for thick oil well of claim 1, it is characterized in that: at first, aliphatic acid polyethenoxy (9) ester, polyoxyethylene polyoxypropylene propylene glycol, polyether glycol type SAA and four kinds of raw materials of FC-N01 fluorocarbon surfactant are added the normal pressure enamel reaction still in proportion; Slowly be warmed up to 90-95 ℃; Under constantly stirring, add entry, continue to stir after 20-40 minute, stop heating; Stir while cooling off, be cooled to normal temperature; Stir discharging after 15-30 minute, obtain water soluble friction reducer used for thick oil well.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2007101197303A CN100537699C (en) | 2007-07-31 | 2007-07-31 | A kind of water soluble friction reducer used for thick oil well and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2007101197303A CN100537699C (en) | 2007-07-31 | 2007-07-31 | A kind of water soluble friction reducer used for thick oil well and preparation method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101121883A true CN101121883A (en) | 2008-02-13 |
| CN100537699C CN100537699C (en) | 2009-09-09 |
Family
ID=39084385
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2007101197303A Active CN100537699C (en) | 2007-07-31 | 2007-07-31 | A kind of water soluble friction reducer used for thick oil well and preparation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN100537699C (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102660243A (en) * | 2012-04-18 | 2012-09-12 | 西南石油大学 | Drag reducer for overcoming high-pressure under-injection of water-injection well in low-permeability reservoir |
| CN101724387B (en) * | 2008-10-15 | 2012-12-12 | 中国石油天然气股份有限公司 | Polyhydroxy-alcohol fracturing fluid |
| CN102852489A (en) * | 2012-09-04 | 2013-01-02 | 中国石油天然气股份有限公司 | Method for treating cold oil extraction layer of thickened oil |
| CN104019087A (en) * | 2014-06-13 | 2014-09-03 | 山东大学 | Method for reducing flow resistance of halogen collecting and conveying pipeline |
| CN104610952A (en) * | 2014-12-23 | 2015-05-13 | 克拉玛依新科澳石油天然气技术股份有限公司 | Fluoro carbonic composite thickened oil viscosity reducer |
| CN115725285A (en) * | 2021-08-27 | 2023-03-03 | 中国石油天然气股份有限公司 | Thickened oil viscosity reduction type workover fluid and preparation method thereof |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102453260B (en) * | 2010-10-28 | 2013-07-31 | 中国石油天然气股份有限公司 | Preparation method of alpha-olefin anti-drag polymer solid-phase storage-stable particle |
-
2007
- 2007-07-31 CN CNB2007101197303A patent/CN100537699C/en active Active
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101724387B (en) * | 2008-10-15 | 2012-12-12 | 中国石油天然气股份有限公司 | Polyhydroxy-alcohol fracturing fluid |
| CN102660243A (en) * | 2012-04-18 | 2012-09-12 | 西南石油大学 | Drag reducer for overcoming high-pressure under-injection of water-injection well in low-permeability reservoir |
| CN102660243B (en) * | 2012-04-18 | 2013-10-09 | 西南石油大学 | Drag reducer for overcoming high-pressure under-injection of water-injection well in low-permeability reservoir |
| CN102852489A (en) * | 2012-09-04 | 2013-01-02 | 中国石油天然气股份有限公司 | Method for treating cold oil extraction layer of thickened oil |
| CN104019087A (en) * | 2014-06-13 | 2014-09-03 | 山东大学 | Method for reducing flow resistance of halogen collecting and conveying pipeline |
| CN104610952A (en) * | 2014-12-23 | 2015-05-13 | 克拉玛依新科澳石油天然气技术股份有限公司 | Fluoro carbonic composite thickened oil viscosity reducer |
| CN115725285A (en) * | 2021-08-27 | 2023-03-03 | 中国石油天然气股份有限公司 | Thickened oil viscosity reduction type workover fluid and preparation method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN100537699C (en) | 2009-09-09 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN100537699C (en) | A kind of water soluble friction reducer used for thick oil well and preparation method thereof | |
| CN102635344B (en) | Composite blocking-removal method for improving flow conductivity of triple-low sandstone reservoir | |
| CN101029273B (en) | Liquefied concentrate for hydraulic stand | |
| CN108690588A (en) | Environment-friendly type de-plugging of well system, preparation method and its method for removing blockage | |
| CN103992784A (en) | Thickened oil emulsification viscosity reduction-demulsification compound and preparation method thereof | |
| CN101328798A (en) | Method for extracting thick oil | |
| CN104371689A (en) | Surfactant compounded system with ultralow interfacial tension and preparation method of surfactant compounded system | |
| CN101538459B (en) | Oil well pollution-free paraffin removing and viscosity reducing agent | |
| CN100529011C (en) | Surface activating agent for oil-field thick-oil well | |
| CN102399547A (en) | Application of rhamnolipid as crude oil pipeline drag reducer and viscosity reducer | |
| CN102533236A (en) | Washing agent for shafts used in oil fields and preparation method thereof | |
| CN101338185B (en) | Oil-soluble drag reducer | |
| CN100513510C (en) | Emulsification viscosity reducing agent for crude oil centralization transmission and preparation method thereof | |
| CN101717626B (en) | Application of methylnaphthalene in lowering viscosity of thickened oil | |
| CN101328429A (en) | Demulsifying agent for dehydration of high-sulphur heavy crude | |
| CN112708406A (en) | Biochemical composite blocking remover and preparation method and application thereof | |
| CN112745821A (en) | Temperature-resistant and salt-resistant oil displacement agent for offshore thick oil steam accompanying injection and application thereof | |
| CN110643341B (en) | Oil-water-mineral interface modifier for heavy oil thermal recovery and preparation method thereof | |
| CN101100614B (en) | Low-temperature demulsifying agent used for olefin-base crude oil dehydration and preparation method thereof | |
| Zhang et al. | Research and existing problems of pour point depressant/viscosity reducer for crude oil production | |
| CN104342090A (en) | Lubricant for drilling fluid, and application thereof | |
| CN101921583B (en) | Viscosity breaking agent for oil well produced liquid containing polymer or gel | |
| CN115386359A (en) | Viscous oil cold-production dispersing huff and puff viscosity reducer and preparation method thereof | |
| CN110003976A (en) | The fully synthetic type hydraulic support concentrate of environmental protection | |
| CN113004883A (en) | Cleanup additive for fracturing and preparation method thereof |
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 |