CN102443381A - Base liquid of synthetic base drilling fluid - Google Patents
Base liquid of synthetic base drilling fluid Download PDFInfo
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- CN102443381A CN102443381A CN2011102972076A CN201110297207A CN102443381A CN 102443381 A CN102443381 A CN 102443381A CN 2011102972076 A CN2011102972076 A CN 2011102972076A CN 201110297207 A CN201110297207 A CN 201110297207A CN 102443381 A CN102443381 A CN 102443381A
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Abstract
The invention discloses base liquid of synthetic base drilling fluid, which comprises the following raw materials, such as limonene, bipentene, butylcellosolve, alkyl polyglucoside, alcohol ether carboxylate, white oil and dimethyl silicon oil. The base liquid combines the advantages of an ether group and alpha-olefin base liquid, makes up the defects of a single component and has little influence of viscosity by the change of temperature and wide application range; the selected raw materials almost do not contain aromatic hydrocarbon and have lower cost; and the base liquid of the synthetic base drilling fluid not only has low production cost but also has good biodegradation performance and environmental friendliness, can adapt to the wide acid-base condition and has favorable surface activity, lubricating performance and chemical stability.
Description
Technical field
The present invention relates to a kind of base fluid of synthetic base drilling fluid.
Background technology
Synthetic base drilling fluid is the performance requriements that can not satisfy down hole problem at water-base drilling fluid, and oil base drilling fluid and mineral oil based drilling fluid can not satisfy and arise at the historic moment under the situation of environmental protection requirement.Synthetic base drilling fluid has been obtained significant environment and economic benefit once bright development prospect occurring demonstrating.
Base fluid is the staple of making drilling fluid, and its performance index have determined most performance index of drilling fluid, for example flash-point, viscosity and zero pour etc.At present, the base fluid of synthetic base drilling fluid can be divided into three kinds of ester group classes, ether class, alpha-olefines, and above-mentioned three kinds of base fluids are all processed by one-component or by the single type of component that the close allied substances of two or more character is formed, thereby performance is single.There is following shortcoming in the drilling fluid made from ester group class and ether class base fluid main: the one, and active carboxyl subjects to the destruction of alkalescence or acidic substance and generates alcohol and carboxylic acid in the base fluid molecule; Therefore in drilling process; The intrusion of sour gas can cause the ester hydrolysis, thereby influences the stability of drilling fluid, and the 2nd, when boring extra large well; Drilling fluid possibly be reduced near 4 ℃ in the cooling effect owing to seawater after the termination of pumping; Drilling fluid can become too thick under so low temperature, thereby causes pump pressure to raise, and causes down hole problems such as formation fracture and borehole well instability.Drilling fluid with the making of alpha-olefines base fluid; Viscosity is low than ester group class and ether class; Therefore solved the big problem of drilling fluid low temperature viscosity; But consequent problem is that the viscosity of drilling fluid is low, makes the drilling fluid rheology performance influenced obviously by temperature, pressure, causes hole cleaning, tiff sedimentation, high circulation to press disadvantages such as consumption.
Summary of the invention
The base fluid that the purpose of this invention is to provide a kind of synthetic base drilling fluid.
In order to realize the foregoing invention purpose, characteristics of the present invention are that the raw material composition of processing base fluid comprises: PC 560, kautschin, ethylene glycol monobutyl ether, APG, alcohol ether carboxylate, white oil and dimethyl silicone oil.
The weight ratio of said PC 560, kautschin, ethylene glycol monobutyl ether, APG, alcohol ether carboxylate, white oil, dimethyl silicone oil is in order: 1: 0.5-1: 1-5: 1-10: 1-3: 1-10: 1-3.
Preparing method of the present invention is: by proportion relation with each raw materials mix and stir into the mixed solution that mixes and get final product.On base fluid provided by the present invention basis, add that alkalinity regulator, weighting agent and water are deployed into the pH value that meets setting and the emulsion of proportion is synthetic base drilling fluid.
The present invention is raw materials used, is the commercial goods.Wherein the model of white oil is that the kinematic viscosity of 10#, dimethyl silicone oil is less than 1000mm
2/ s (25 ℃).
PC 560, kautschin and ethylene glycol monobutyl ether have been formed the basal liquid of the base fluid of synthetic base drilling fluid, make the present invention have the advantage of ether class and alpha-olefines base fluid concurrently, and viscosity receives influence of temperature change little, has enlarged accommodation.As the interpolation of the APG and the alcohol ether carboxylate of tensio-active agent, improved the surfactivity of base fluid greatly; APG; Be by the pure and mild glucose synthetic of renewable resources natural fat; It is the more comprehensive new non-ionic surfactants of a kind of performance; Having the characteristic of common nonionic and AS concurrently, have high surface, good ecological security and intermiscibility, is internationally recognized first-selection " green " functional surface promoting agent; Alcohol ether carboxylate; It is one type of novel multifunctional AS; Its general structural formula is: R-(OCH2CH2) nOCH2COONa (H); Quite similar with soap, but the EO chain that embeds makes its characteristics that have both negatively charged ion and nonionogenic tenside, can use under the pH condition widely.The interpolation of white oil and dimethyl silicone oil makes the present invention have excellent lubrication property; White oil is that white oil basic composition is saturated hydrocarbon structure through the MO behind the special deep refining, and substances content such as aromatic hydrocarbon, nitrogen, oxygen, sulphur are similar to zero; Environmentally friendly, have good oxidative stability, chemicalstability; Light stability, colourless, tasteless, do not corrode fiber textile; Dimethyl silicone oil is tasteless nontoxic, has physiology inertia, good chemicalstability, electric edge property and weathering resistance, and range of viscosities is wide, and zero pour is low, and flash-point is high, and hydrophobic performance is good, and has very high resistance to shear.
In sum, the present invention's effect that has the following advantages: the base fluid that (1) adopts composite set of dispense to process, had the advantage of ether class and alpha-olefines base fluid concurrently, remedied the drawback of one-component, it is less that its viscosity is influenced by variation of temperature, applied range.(2) selected raw material contains aromatic hydrocarbon and price is lower hardly, and not only production cost is low, and biological degradability is good, environmentally friendly.(3) can adapt to wide in range acid-base condition.(4) have good surfactivity, lubricity and chemicalstability.
Embodiment
Below further specify concrete implementation of the present invention through embodiment, these embodiment only are used to the present invention is described and to not restriction of the present invention.
Embodiment 1
By weight relation, get 1.25 parts of 1 part of PC 560,0.5 part of kautschin, 5 parts of ethylene glycol monobutyl ethers, 1 part of APG, 2 parts of alcohol ether carboxylates, 10 parts of white oils and dimethyl silicone oils, above-mentioned raw materials is mixed to mix thoroughly just making base fluid.
Embodiment 2
By weight relation, get 3 parts of 1 part of PC 560,0.75 part of kautschin, 3 parts of ethylene glycol monobutyl ethers, 5 parts of APGs, 1.5 parts of alcohol ether carboxylates, 1 part of white oil and dimethyl silicone oils, above-mentioned raw materials is mixed to mix thoroughly just making base fluid.
Embodiment 3
By weight relation, get 1.5 parts of 1 part of PC 560,1 part of kautschin, 2.5 parts of ethylene glycol monobutyl ethers, 10 parts of APGs, 3 parts of alcohol ether carboxylates, 5 parts of white oils and dimethyl silicone oils, above-mentioned raw materials is mixed to mix thoroughly just making base fluid.
Embodiment 4
By weight relation, get 1 part of 1 part of PC 560,0. 5 parts of kautschins, 1 part of ethylene glycol monobutyl ether, 7.5 parts of APGs, 1 part of alcohol ether carboxylate, 2.5 parts of white oils and dimethyl silicone oil, above-mentioned raw materials is mixed to mix thoroughly making base fluid.
The base fluid of the synthetic base drilling fluid that the foregoing description is made detects, and detected result is seen table 1.
The Performance Detection table of the base fluid that table 1 embodiment 1-4 makes
Claims (2)
1. the base fluid of a synthetic base drilling fluid is characterized in that its raw material composition comprises PC 560, kautschin, ethylene glycol monobutyl ether, APG, alcohol ether carboxylate, white oil and dimethyl silicone oil.
2. the base fluid of synthetic base drilling fluid according to claim 1, it is characterized in that: the weight ratio of PC 560, kautschin, ethylene glycol monobutyl ether, APG, alcohol ether carboxylate, white oil, dimethyl silicone oil is in order: 1: 0.5-1: 1-5: 1-10: 1-3: 1-10: 1-3.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110297207 CN102443381B (en) | 2011-09-30 | 2011-09-30 | Base liquid of synthetic base drilling fluid |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110297207 CN102443381B (en) | 2011-09-30 | 2011-09-30 | Base liquid of synthetic base drilling fluid |
Publications (2)
| Publication Number | Publication Date |
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| CN102443381A true CN102443381A (en) | 2012-05-09 |
| CN102443381B CN102443381B (en) | 2013-06-26 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 201110297207 Active CN102443381B (en) | 2011-09-30 | 2011-09-30 | Base liquid of synthetic base drilling fluid |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103540299A (en) * | 2012-07-12 | 2014-01-29 | 中国石油化工股份有限公司 | Drilling fluid for low-pressure water-sensitive stratum |
| CN106414658A (en) * | 2014-05-08 | 2017-02-15 | 英尼奥斯美国有限责任公司 | Drilling fluid and process of making the same |
| CN115975613A (en) * | 2021-10-14 | 2023-04-18 | 中石化石油工程技术服务有限公司 | Alpha-olefin base fluid and application thereof in drilling fluid |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1567610B1 (en) * | 2003-08-25 | 2008-04-02 | M-I L.L.C. | Flat rheology drilling fluid |
| CN101215461A (en) * | 2008-01-04 | 2008-07-09 | 中国海洋石油总公司 | Complete-oil synthetic base drilling fluid |
-
2011
- 2011-09-30 CN CN 201110297207 patent/CN102443381B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1567610B1 (en) * | 2003-08-25 | 2008-04-02 | M-I L.L.C. | Flat rheology drilling fluid |
| CN101215461A (en) * | 2008-01-04 | 2008-07-09 | 中国海洋石油总公司 | Complete-oil synthetic base drilling fluid |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103540299A (en) * | 2012-07-12 | 2014-01-29 | 中国石油化工股份有限公司 | Drilling fluid for low-pressure water-sensitive stratum |
| CN103540299B (en) * | 2012-07-12 | 2017-04-12 | 中国石油化工股份有限公司 | Drilling fluid for low-pressure water-sensitive stratum |
| CN106414658A (en) * | 2014-05-08 | 2017-02-15 | 英尼奥斯美国有限责任公司 | Drilling fluid and process of making the same |
| CN106414658B (en) * | 2014-05-08 | 2021-04-20 | 英尼奥斯美国有限责任公司 | Drilling fluid and preparation method thereof |
| CN115975613A (en) * | 2021-10-14 | 2023-04-18 | 中石化石油工程技术服务有限公司 | Alpha-olefin base fluid and application thereof in drilling fluid |
| CN115975613B (en) * | 2021-10-14 | 2024-04-05 | 中石化石油工程技术服务有限公司 | Alpha-olefin base fluid and application thereof in drilling fluid |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102443381B (en) | 2013-06-26 |
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