CN101921583B - Viscosity breaking agent for oil well produced liquid containing polymer or gel - Google Patents
Viscosity breaking agent for oil well produced liquid containing polymer or gel Download PDFInfo
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Abstract
The invention relates to a viscosity breaking agent for an oil well produced liquid containing polymer or gel. The viscosity breaking agent comprises the following components in percentage by weight: 12.15-13.05% of polyoxyethylene polyoxypropylene propylene glycol ether, 13.45-14.15% of fatty alcohol-polyoxyethylene ether phosphate monoester ammonium salt, 14.5-15.0% of fatty alcohol-polyoxyethylene ether phosphate monoester, 0.01-0.015% of alpha-carotene, 1.05-1.35% of N,N'-butylidene bilauroyl ammonium bromide, 2.35-3.0% of diethylene glycol diethyl ether, 0.5-0.65% of sodium hydroxide, 0.001-0.0015% of fluorocarbon surfactant FN-2, 0.45-0.5% of sodium phosphate and the balance of water. The invention has the advantage that when the addition quantity of the viscosity breaking agent is 500-800 mg/l, the polymer or gel is dispersed into nonaggregated small particles to be exploited out of ground, and the load of oil well pumping units is reduced. After being tested in more than 10 oil wells, the load of the oil well pumping units is reduced by 81.26% on average.
Description
Technical field
The present invention relates to petroleum industry and use the chemical technical field, relate in particular to viscosity-depression agent that a kind of oil well uses and preparation method thereof, is a kind of viscosity-depression agent that is applied to contain in the oil well produced liquid oil well of polymkeric substance or gel.
Background technology
At present, TOR is to improve one of important measures of oil recovery rate.But, make and contain polymkeric substance or gel in the part oil well produced liquid along with the popularization of tertiary oil recovery technology.The existence of polymkeric substance or gel causes oil pumper load sharply to increase, the oil well that has even can not ordinary production.Black, soft, the thick material of matter of look for example in certain oil field part oil well produced liquid, occurred, learn through analyzing: high molecular polymer content is up to 0.17%, average out to 0.08%.Serious spination appears in load-position diagram, and the oil pumper load is multiplied, and causes the oil well can not ordinary production.Conventional viscosity reducer for crude oil can not solve this type of problem.
For example: the self-liquidating type viscosity reduction Study on Technology of shallow layer thick oil well that people such as Shang Sixian are published on 2000 the 2nd phases Xi'an shiyou University's journal (natural science edition) magazine is pointed out with using in the literary composition: adopt the self-liquidating type viscosity reduction technology of heavy oil wells has solved in the ultra heavy oil development of domestic viscous crude influences production capacity because of viscosity is too high problem.Concrete technology be in the well head design and installation viscosity reduction equipment, inject oil sets annular space to the different ratios viscosity-depression agent, reduced viscosity of crude and crude oil stream pressure at pit shaft and pipeline, improved per-well production.Individual well when oil pumping rate 80.3% brings up to 97.3% before by viscosity reduction, and viscosity reduction well cycle oil offtake has improved 360t, and the oil pumper power consumption has on average reduced by 26.7%.This technical process is simple, less investment, and instant effect, economic benefit is obvious.
People such as Ding Zhenwu are published in and are directed against oily cap viscosity height, shut-in time length, the formation dead oil cap in sleeve pipe that Liaohe Oil Field daybreak 1-20-374 well exists at present in the technological literary composition of bailing well enzyme viscosity reduction on 2010 the 1st phases Xinjiang oil and gas magazine; Be difficult to carry out problems such as oil salvage operation; Carried out the effect research of enzyme reducing thick oil viscosity in dragging for oily process, analyzed viscosity-reducing mechanism and influenced each factor of viscosity break ratio.The result shows: enzyme reducing thick oil viscosity technology can effectively solve the viscosity height of crude oil and be difficult to the extraction problem; When temperature was 50 ℃, the enzyme viscosity reducing effect was best; Surpass 50 ℃, viscosity reducing effect raises with temperature and reduces, and enzyme to join appearance with clear water more effective than join appearance with sewage, to ultra viscous crude DeGrain; Enzyme reducing thick oil viscosity technology relative cost is lower, and oil increasing effect is obvious.
For addressing this problem, the method that the technician attempts strengthening conventional viscosity-depression agent consumption solves, but produces little effect.Through to the individual well crude oil sample analysis, established that the medicament reply contains polymkeric substance or gel crude oil has the characteristic of dispersiveness, wettability, low interfacial tension, make the very tiny particle of polymkeric substance or gel formation, thereby reduce the oil pumper load.
Summary of the invention
The objective of the invention is: a kind of viscosity-depression agent that oil well produced liquid contains polymkeric substance or gel that is used for is provided; In oil well, add 500～800mg/l; Polymkeric substance or gel are dispersed into the small-particle that can not flock together and extraction ground, reduce the load of oil pumper.
The technical scheme that the present invention adopts is: be used for the component (raw material) that oil well produced liquid contains the viscosity-depression agent of polymkeric substance or gel and comprise:
1, polyoxyethylene polyoxypropylene propylene glycol (industrial goods), Zhao Fulin chief editor's course teaching materials geared to the 21st century, oilfield chemistry one book, press of China University Of Petroleum Beijing, date of publication: the 1st edition the 6th printing February in 2007, the 168th page.
Character: the water soluble surfactant active, the oil well paraffin prevention agent is a staple.
2, AEO phosphate monoester ammonium salt (industrial goods).Huang Hongzhou chief editor's Chinese tensio-active agent overview one book, Chemical Industry Press publishes, the 209th page.
Character: colourless or weak yellow liquid, good water solubility has extremely low skin irritation and high security, cleans, emulsification, static resistance is good.
Purposes: as the static inhibitor of chemical fibre and plastics, paper-making deinking agent, metal cutting wetting agent.
Production unit: China Daily Chemical Industry Research Institute, the Shijiazhuang grand chemical industry technological development of length ltd
3,, the AEO phosphate monoester, the another name: MAP-1 (industrial goods).Huang Hongzhou chief editor's Chinese tensio-active agent overview one book, Chemical Industry Press publishes, the 208th page.
Character: have good water-soluble, abundant fine and smooth foam, good washing performance and emulsifying property, excellent antistatic, oilness, anti-hard water property etc.
Purposes: in textile industry, be used as static inhibitor; In paper industry, be used as deinking agent, paper pulp dispersion agent.
Production unit: China Daily Chemical Industry Research Institute, the Shijiazhuang grand chemical industry technological development of length ltd
4, alpha-carotene
5, formal name used at school: N, the bimonthly osmanthus of N '-butylidene acyl brometo de amonio (industrial goods).Xu Na writes, and the step-down augmented injection effect of quaternary twin tensio-active agent G252 is published in " oilfield chemistry ", 2007 the 24th the 2nd phases of volume, the 138th page;
6, diethylene glycol ether (industrial goods).Zhao Fulin chief editor's course teaching materials geared to the 21st century, oilfield chemistry one book, press of China University Of Petroleum Beijing, date of publication: the 1st edition the 6th printing February in 2007, the 174th page.
Character: colourless; The liquid that water-absorbent is stable, flammable.Moderate pleasant smell is arranged, little sticking.Can be miscible with water, acetone, benzene, chloroform, ethanol, ether, pyridine etc.
Purposes: the mutual solvent of water base paraffin remover.
The production unit Shijiazhuang grand chemical industry technological development of length ltd.
7, sodium hydroxide (industrial goods)
8, fluorocarbon surfactant FN-2 (industrial goods), " Chinese tensio-active agent overview " book of Huang Hongzhou chief editor, Chemical Industry Press publishes, the 463rd page.
Structural formula: C
13H
17F
11N
2O
3
Purposes: wetting agent, dispersion agent, pore forming material, sterilant.
Production unit: Shanghai organic chemistry institute demonstration plant
9, sodium phosphate (industrial goods)
10, water.
Being used for each weight percentages of components that oil well produced liquid contains the viscosity-depression agent of polymkeric substance or gel is:
1, polyoxyethylene polyoxypropylene propylene glycol (industrial goods): 12.15～13.05%;
2, AEO phosphate monoester ammonium salt (industrial goods): 13.45～14.15%;
3, AEO phosphate monoester (industrial goods): 14.5～15.0%;
4, alpha-carotene (industrial goods): 0.01～0.015%;
5, N, the bimonthly osmanthus of N '-butylidene acyl brometo de amonio (industrial goods): 1.05～1.35%;
6, diethylene glycol ether (industrial goods): 2.35～3.0%;
7, sodium hydroxide (industrial goods): 0.5～0.65%;
8, fluorocarbon surfactant FN-2 (industrial goods): 0.001～0.0015%;
9, sodium phosphate (industrial goods): 0.45～0.5%;
10, all the other are water.
Be used for the preparation method that oil well produced liquid contains the viscosity-depression agent of polymkeric substance or gel
Major equipment: enamel reaction still with 2000L of stirring, heating, cooling and vacuum system.
The preparation method: at first, with polyoxyethylene polyoxypropylene propylene glycol, AEO phosphate monoester ammonium salt, AEO phosphate monoester, N, the bimonthly osmanthus of N '-butylidene acyl brometo de amonio adds enamel reaction still in proportion.Slowly be warmed up to 45～50 ℃.Secondly, need add 15% of entry and continue stirring 30 minutes constantly stirring first adding down, add alpha-carotene, sodium hydroxide, sodium phosphate more successively in proportion; The limit edged stirs, and stirs after 30 minutes, adds the water and the fluorocarbon surfactant FN-2 of remainder at last and stirs 30 minutes; Stop heating; Stir while cooling off, be cooled to normal temperature, obtain containing in the oil well produced liquid viscosity-depression agent of polymkeric substance or gel.
Method of use: add the oil well from the oil jacket annular space according to oilwell produced fluid amount.
Beneficial effect of the present invention: the present invention is used for the viscosity-depression agent that oil well produced liquid contains polymkeric substance or gel; At dosage is 500～800mg/l; Polymkeric substance or gel are dispersed into the small-particle that can not flock together and extraction ground, reduce the load of pumping unit of well.On probation through mouthful oil well surplus 10, the oil pumper load is average to descend 86.729 percentage points.
Embodiment
Embodiment 1: being used for each weight percentages of components that oil well produced liquid contains the viscosity-depression agent of polymkeric substance or gel is:
1, polyoxyethylene polyoxypropylene propylene glycol (industrial goods): 12.15%;
2, AEO phosphate monoester ammonium salt (industrial goods): 14.15%;
3, AEO phosphate monoester (industrial goods): 14.5%;
4, alpha-carotene (industrial goods): 0.01%;
5, N, the bimonthly osmanthus of N '-butylidene acyl brometo de amonio (industrial goods): 1.05%;
6, diethylene glycol ether (industrial goods): 3.0%;
7, sodium hydroxide (industrial goods): 0.5%;
8, fluorocarbon surfactant FN-2 (industrial goods): 0.001%;
9, sodium phosphate (industrial goods): 0.5%;
10, water: 54.139%.
The preparation method: at first, with polyoxyethylene polyoxypropylene propylene glycol, AEO phosphate monoester ammonium salt, AEO phosphate monoester, N, the bimonthly osmanthus of N '-butylidene acyl brometo de amonio adds enamel reaction still in proportion.Slowly be warmed up to 45～50 ℃.Secondly, need add 15% of entry and continue stirring 30 minutes constantly stirring first adding down, add alpha-carotene, sodium hydroxide, sodium phosphate more successively in proportion; The limit edged stirs, and stirs after 30 minutes, adds the water and the fluorocarbon surfactant FN-2 of remainder at last and stirs 30 minutes; Stop heating; Stir while cooling off, be cooled to normal temperature, obtain containing in the oil well produced liquid viscosity-depression agent of polymkeric substance or gel.
After high molecular polymer content was 3 mouthfuls of aboveground application of 0.12-0.145%, the oil pumper mean load descended 89.23 percentage points.
Embodiment 2: being used for each weight percentages of components that oil well produced liquid contains the viscosity-depression agent of polymkeric substance or gel is:
1, polyoxyethylene polyoxypropylene propylene glycol (industrial goods): 12.35%;
2, AEO phosphate monoester ammonium salt (industrial goods): 14.05%;
3, AEO phosphate monoester (industrial goods): 14.6%;
4, alpha-carotene (industrial goods): 0.012%;
5, N, the bimonthly osmanthus of N '-butylidene acyl brometo de amonio (industrial goods): 1.08%;
6, diethylene glycol ether (industrial goods): 2.80%;
7, sodium hydroxide (industrial goods): 0.54%;
8, fluorocarbon surfactant FN-2 (industrial goods): 0.0012%;
9, sodium phosphate (industrial goods): 0.48%;
10, water: 54.0868%.
After 2 mouthfuls of aboveground application of high molecular polymer content 0.165-0.17%, the oil pumper mean load descends 84.76 percentage points.
Embodiment 3: being used for each weight percentages of components that oil well produced liquid contains the viscosity-depression agent of polymkeric substance or gel is:
1, polyoxyethylene polyoxypropylene propylene glycol (industrial goods): 12.6%;
2, AEO phosphate monoester ammonium salt (industrial goods): 13.8%;
3, AEO phosphate monoester (industrial goods): 14.8%;
4, alpha-carotene (industrial goods): 0.013%;
5, N, the bimonthly osmanthus of N '-butylidene acyl brometo de amonio (industrial goods): 1.12%;
6, diethylene glycol ether (industrial goods): 2.65%;
7, sodium hydroxide (industrial goods): 0.58%;
8, fluorocarbon surfactant FN-2 (industrial goods): 0.0013%;
9, sodium phosphate (industrial goods): 0.47%;
10, water: 53.9655%.
After 3 mouthfuls of aboveground application of high molecular polymer content 0.069-0.89%, the oil pumper mean load descends 91.39 percentage points.
Embodiment 4: being used for each weight percentages of components that oil well produced liquid contains the viscosity-depression agent of polymkeric substance or gel is:
1, polyoxyethylene polyoxypropylene propylene glycol (industrial goods): 12.85%;
2, AEO phosphate monoester ammonium salt (industrial goods): 13.65%;
3, AEO phosphate monoester (industrial goods): 14.9%;
4, alpha-carotene (industrial goods): 0.014%;
5, N, the bimonthly osmanthus of N '-butylidene acyl brometo de amonio (industrial goods): 1.2%;
6, diethylene glycol ether (industrial goods): 2.5%;
7, sodium hydroxide (industrial goods): 0.6%;
8, fluorocarbon surfactant FN-2 (industrial goods): 0.0014%;
9, sodium phosphate (industrial goods): 0.46%;
10, water: 53.8246%.
After 3 mouthfuls of aboveground application of high molecular polymer content 0.093-0.107%, the oil pumper mean load descends 82.67 percentage points.
Embodiment 5: being used for each weight percentages of components that oil well produced liquid contains the viscosity-depression agent of polymkeric substance or gel is:
1, polyoxyethylene polyoxypropylene propylene glycol (industrial goods): 13.05%;
2, AEO phosphate monoester ammonium salt (industrial goods): 13.45%;
3, AEO phosphate monoester (industrial goods): 15.0%;
4, alpha-carotene (industrial goods): 0.015%;
5, N, the bimonthly osmanthus of N '-butylidene acyl brometo de amonio (industrial goods): 1.35%;
6, diethylene glycol ether (industrial goods): 2.35%;
7, sodium hydroxide (industrial goods): 0.65%;
8, fluorocarbon surfactant FN-2 (industrial goods): 0.0015%;
9, sodium phosphate (industrial goods): 0.45%;
10, water: 53.6835%.
After 1 mouthful of aboveground application of high molecular polymer content 0.192%, the oil pumper mean load descends 81.36 percentage points.
Claims (2)
1. one kind is used for the viscosity-depression agent that oil well produced liquid contains polymkeric substance or gel, it is characterized in that: each weight percentages of components is:
Polyoxyethylene polyoxypropylene propylene glycol: 12.15～13.05%;
AEO phosphate monoester ammonium salt: 13.45～14.15%;
AEO phosphate monoester: 14.5～15.0%;
Alpha-carotene: 0.01～0.015%;
N, the bimonthly osmanthus of N '-butylidene acyl brometo de amonio: 1.05～1.35%;
Diethylene glycol ether: 2.35～3.0%;
Sodium hydroxide: 0.5～0.65%;
Fluorocarbon surfactant FN-2:0.001～0.0015%;
Sodium phosphate: 0.45～0.5%;
All the other are water.
2. according to claim 1ly be used for the viscosity-depression agent that oil well produced liquid contains polymkeric substance or gel, it is characterized in that: the preparation method is:
At first, with polyoxyethylene polyoxypropylene propylene glycol, AEO phosphate monoester ammonium salt, AEO phosphate monoester, N, the bimonthly osmanthus of N '-butylidene acyl brometo de amonio adds enamel reaction still in proportion; Slowly be warmed up to 45～50 ℃; Secondly, need add 15% of entry and continue stirring 30 minutes constantly stirring first adding down, add alpha-carotene, sodium hydroxide, sodium phosphate more successively in proportion; The limit edged stirs, and stirs after 30 minutes, adds the water and the fluorocarbon surfactant FN-2 of remainder at last and stirs 30 minutes; Stop heating; Stir while cooling off, be cooled to normal temperature, obtain containing in the oil well produced liquid viscosity-depression agent of polymkeric substance or gel.
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| CN102382635B (en) * | 2011-08-12 | 2013-04-24 | 中国石油天然气股份有限公司 | Viscosity reducer for gathering and transferring of single pipes and preparation method thereof |
| EP3224329B1 (en) | 2014-11-24 | 2019-01-09 | Akzo Nobel Chemicals International B.V. | Delayed breaker for viscoelastic surfactant-based fluids |
| CN105670591B (en) * | 2016-03-03 | 2018-05-04 | 中国石油天然气股份有限公司 | A kind of antifreeze foaming water discharge agent and preparation method and application |
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| CN1472276A (en) * | 2003-07-01 | 2004-02-04 | 中国石油天然气股份有限公司 | High performance attenuant for thick oil and superthick oil |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN1472276A (en) * | 2003-07-01 | 2004-02-04 | 中国石油天然气股份有限公司 | High performance attenuant for thick oil and superthick oil |
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