CN103571441A - Wear-resistant drag reducer for drilling fluid and preparation method thereof - Google Patents
Wear-resistant drag reducer for drilling fluid and preparation method thereof Download PDFInfo
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- CN103571441A CN103571441A CN201310471487.7A CN201310471487A CN103571441A CN 103571441 A CN103571441 A CN 103571441A CN 201310471487 A CN201310471487 A CN 201310471487A CN 103571441 A CN103571441 A CN 103571441A
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- 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
- C09K8/02—Well-drilling compositions
- C09K8/03—Specific additives for general use in well-drilling compositions
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- 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
- C09K2208/00—Aspects relating to compositions of drilling or well treatment fluids
- C09K2208/28—Friction or drag reducing additives
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Abstract
The invention relates to a wear-resistant drag reducer for drilling fluid and a preparation method thereof. The wear-resistant drag reducer is characterized in that a formula of the wear-resistant drag reducer is prepared from the following main raw materials: vegetable oil acid, cotton seed oil, sulfur powder, diethanol amine and kerosene; the auxiliary raw materials comprise tributyl phosphate, organic soil and T323 anti-wear reagent at extreme pressure. The wear-resistant drag reducer for drilling fluid comprises the following components in percentage by weight based on the total amount of the drag reducer: 7-13 percent of vegetable oil acid, 26-31 percent of cotton seed oil, 6-11 percent of sulfur powder, 3-5 percent of diethanol amine, 27-29 percent of kerosene and 12-17 percent of auxiliary materials and other materials. The method for preparing the wear-resistant drag reducer for drilling fluid comprises a sulfonation reaction, an amidation reaction and a mixed reaction. When the wear-resistant drag reducer is used for drilling, the drag reducer can be adsorbed to the surface of a drilling tool preferentially, a dense high-strength protective film is generated, the lubricating property of the drilling fluid is reduced, the friction and wear of the metal surface are reduced, an extreme pressure lubrication coefficient and a mud cake adhesion coefficient of the drilling fluid are effectively reduced, blockage and other accidents in the drilling process are reduced.
Description
Technical field
The present invention relates to oil production technical field of chemistry, particularly wear-resistant flow improver and preparation method thereof of using for a kind of drilling fluid.
Background technology
Follow going deep into of petroleum natural gas exploration paces, deep-well, long horizontal traverse well, horizontal well get more and more, and in the construction process of this class well due to long construction period or well track dog-leg degree large, between drilling tool and sleeve pipe due to phase mutual friction, cause drill rod abrasion, the local wear down of sleeve pipe or worn-off cause pit shaft cannot reach bearing requirements, to drilling well, produce and bring hidden trouble or cause a serious accident, reduce the production life of well of Oil/gas Well, caused most probably great financial loss and loss of life and personal injury.In oil-gas mining drilling process, common lubricant is under high temperature, high-density, high solid phase, highly basic condition, and because the factors such as crosslinked, degraded, volatilization, breakdown of emulsion lose activity, lubricated, drag reduction usefulness reduces greatly.In addition, in long horizontal traverse well section drilling process, drill string and borehole wall contact area increase, and frictional resistance increases, and well is cleaned ineffective, and hole instability very likely causes undergauge, caves in and the formation of cutting bed, has increased moment of torsion and the frictional resistance in drilling process.If it is bad that oilness and drag reduction are controlled, very easily cause the complex accident such as sticky card, mud drum, and cause the increase of resistance to flow, reduce rate of penetration.
Therefore, develop a kind of wear-resistant flow improver of drilling fluid that can effectively reduce the down-hole coefficient of friction resistance, reduce the wearing and tearing of sleeve pipe, improve the oilness of drilling fluid, reduce the down-hole coefficient of friction resistance, reduce the probability that adheres to bit freezing and bit balling, effectively improve drilling speed, improve Oil/gas Well exploration and development benefit, in oil-gas mining drilling process, seem particularly important.
Summary of the invention
The invention provides and a kind ofly can be preferentially adsorbed on surface of drill stem; on the surface of drilling tool and sleeve pipe, form the high-intensity protective membrane of one deck densification; thereby greatly reduce metallic surface friction and wear; reduce extreme boundary lubrication coefficient and the mud cake sticking coefficient of drilling fluid simultaneously effectively, reduce the wear-resistant flow improver of drilling fluid that the accidents such as blocked portion in drilling process occur.
The present invention is achieved through the following technical solutions:
Use a wear-resistant flow improver, it is characterized in that, formula main raw material comprises vegetable oil acid, oleum gossypii seminis, SULPHUR POWDER, diethanolamine, kerosene etc.; Auxiliary material comprises tributyl phosphate, organophilic clay, T323 extreme pressure anti-wear additives etc.
Further, described drilling fluid by the weight ratio that each component in wear-resistant flow improver accounts for flow improver total amount is, vegetable oil acid 7%～13%, oleum gossypii seminis 26%～31%, SULPHUR POWDER 6%～11%, diethanolamine 3%～5%, kerosene 27%～29%, auxiliary material and other materials add up to 12%～17%.
Further, in described vegetable oil acid, OA effective content is more than 95%.
Further, in described Oleum Gossypii semen, oleic acid effective content is between 31%～34%, and stearic acid effective content is between 48%～61%.
A preparation method for wear-resistant flow improver for drilling fluid, the method comprises the following steps:
(1), under sulfonation reaction condition, according to formula rate described in claim 2, oleum gossypii seminis and SULPHUR POWDER mixture reaction are obtained to the sulfonation Oleum Gossypii semen mixture of alpha-sulfonated fatty phosphate content >=75%;
(2), under sulfonation reaction condition, according to formula rate described in claim 2, vegetable oil acid and SULPHUR POWDER mixture reaction are obtained to the sulphonated oleic acid mixture of alpha-sulfonated fatty phosphate content >=75%;
(3) under amidation reaction condition, by the sulphonated oleic acid mixture of step (2) gained with and diethanolamine hybrid reaction, obtain flow improver main body mixture;
(4) under neutralization reaction condition, by flow improver main body mixture, kerosene and the tributyl phosphate of the sulfonation Oleum Gossypii semen mixture of step (1) gained, step (3) gained, organophilic clay, the auxiliary materials such as T323 extreme pressure anti-wear additives are mixed by formula rate, obtain wear-resistant flow improver finished product.
Further, the preparation method of wear-resistant flow improver for described drilling fluid, step (1) sulfonation reaction condition comprises that temperature is 160 ℃, the time is 170～230min.
Further, the preparation method of wear-resistant flow improver for described drilling fluid, step (2) sulfonation reaction condition comprises that temperature is 160 ℃, the time is 160～210min.
Further, the preparation method of wear-resistant flow improver for described drilling fluid, step (3) amidation reaction condition comprises that temperature is 130 ℃～150 ℃, the time is 160～220min.
Further, the preparation method of wear-resistant flow improver for described drilling fluid, step (4) neutralization reaction condition comprises that temperature is normal temperature, the time is 120～140min.
The drilling fluid the present invention relates to is to be composited under hot conditions by the multiple organic materials with extreme pressure property and resistance to abrasion with wear-resistant flow improver, and beneficial effect is embodied in:
(1) wear-resistant flow improver high temperature resistance for the drilling fluid the present invention relates to, fluorescence is adjustable, and extreme pressure anti-wear is good, and extreme boundary lubrication is excellent, promotes production efficiency.
(2) the present invention can generate fine and close high strength protective membrane; be preferentially adsorbed on surface of drill stem, reduce surface friction and wearing and tearing, effectively reduce extreme boundary lubrication coefficient and the mud cake sticking coefficient of drilling fluid; improve oilness, reduce the generation of the accidents such as blocked portion in drilling process.
Embodiment
The invention provides and a kind ofly can be preferentially adsorbed on surface of drill stem, greatly reduce the product of metallic surface friction and wear, also can effectively reduce extreme boundary lubrication coefficient and the mud cake sticking coefficient of drilling fluid simultaneously, reduce the wear-resistant flow improver of drilling fluid that the accidents such as blocked portion in drilling process occur.
The present invention is achieved through the following technical solutions:
Use a wear-resistant flow improver, it is characterized in that, formula main raw material comprises vegetable oil acid, oleum gossypii seminis, SULPHUR POWDER, diethanolamine, kerosene etc.; Auxiliary material comprises tributyl phosphate, organophilic clay, T323 extreme pressure anti-wear additives etc.
Further, described drilling fluid by the weight ratio that each component in wear-resistant flow improver accounts for flow improver total amount is, vegetable oil acid 7%～13%, oleum gossypii seminis 26%～31%, SULPHUR POWDER 6%～11%, diethanolamine 3%～5%, kerosene 27%～29%, auxiliary material and other materials add up to 12%～17%.
Further, in described vegetable oil acid, OA effective content is more than 95%.
Further, in described Oleum Gossypii semen, oleic acid effective content is between 31%～34%, and stearic acid effective content is between 48%～61%.
A preparation method for wear-resistant flow improver for drilling fluid, the method comprises the following steps:
(1), under sulfonation reaction condition, according to formula rate described in claim 2, oleum gossypii seminis and SULPHUR POWDER mixture reaction are obtained to the sulfonation Oleum Gossypii semen mixture of alpha-sulfonated fatty phosphate content >=75%;
(2), under sulfonation reaction condition, according to formula rate described in claim 2, vegetable oil acid and SULPHUR POWDER mixture reaction are obtained to the sulphonated oleic acid mixture of alpha-sulfonated fatty phosphate content >=75%;
(3) under amidation reaction condition, by the sulphonated oleic acid mixture of step (2) gained with and diethanolamine hybrid reaction, obtain flow improver main body mixture;
(4) under neutralization reaction condition, by flow improver main body mixture, kerosene and the tributyl phosphate of the sulfonation Oleum Gossypii semen mixture of step (1) gained, step (3) gained, organophilic clay, the auxiliary materials such as T323 extreme pressure anti-wear additives are mixed by formula rate, obtain wear-resistant flow improver finished product.
Further, the preparation method of wear-resistant flow improver for described drilling fluid, step (1) sulfonation reaction condition comprises that temperature is 160 ℃, the time is 170～230min.
Further, the preparation method of wear-resistant flow improver for described drilling fluid, step (2) sulfonation reaction condition comprises that temperature is 160 ℃, the time is 160～210min.
Further, the preparation method of wear-resistant flow improver for described drilling fluid, step (3) amidation reaction condition comprises that temperature is 130 ℃～150 ℃, the time is 160～220min.
Further, the preparation method of wear-resistant flow improver for described drilling fluid, step (4) neutralization reaction condition comprises that temperature is normal temperature, the time is 120～140min.
In addition, the present invention also provides the drilling fluid being prepared by aforesaid method flow improver.
Below will describe the present invention by embodiment.
In following test case, in described drilling fluid, contain following component: the sodium carbonate of 0.5 weight part (Jingzhou City, Hubei Wanda Chemical Co., Ltd.), 5 weight part sodium bentonites (Shandong Xin Tong wilkinite company limited), 0.3 weight part ground barium sulfate (Guangxi Xin Li mining industry company limited), the sodium carboxymethyl-cellulose of 0.5 weight part (Puyang Xin Yuan polymkeric substance company limited), 100 weight part distilled water (meeting 6682-2,008 three grades of water quality standards of GB/T).
Embodiment 1:
In temperature, be under 160 ℃ of sulfonation reaction conditions, the oleum gossypii seminis of 28 weight parts is reacted to 190min with the SULPHUR POWDER of 9 weight parts, obtain alpha-sulfonated fatty phosphate content and be 77% sulfonation Oleum Gossypii semen mixture, the oleum gossypii seminis of 8 weight parts is reacted to 180min with the SULPHUR POWDER of 7 weight parts, obtain alpha-sulfonated fatty phosphate content and be 75% sulphonated oleic acid mixture; Then under amidation reaction condition, by the diethanolamine of the sulphonated oleic acid mixture of 35 weight parts and 3 weight parts, under 145 ℃ of conditions, amidate action 170min, obtains flow improver main body mixture; Finally, by the flow improver main body mixture of the sulfonation Oleum Gossypii semen mixture of 36 weight parts, 21 weight parts, the kerosene of 28 parts, the auxiliary material of 15 parts and other material, under normal temperature condition, the 130min that is mixed, obtains wear-resistant flow improver finished product CQ-1-01.Test result demonstration, this product density is density, 0.99g/cm
3, wilkinite sample slurry mill vector reduced rate 64%, increases the weight of sample slurry mill vector reduced rate 56%, and wilkinite sample slurry lubricating coefficient reduced rate 82%, increases the weight of sample slurry lubricating coefficient reduced rate 67%.
Embodiment 2:
In temperature, be under 160 ℃ of sulfonation reaction conditions, the oleum gossypii seminis of 29 weight parts is reacted to 200min with the SULPHUR POWDER of 10 weight parts, obtain alpha-sulfonated fatty phosphate content and be 79% sulfonation Oleum Gossypii semen mixture, the oleum gossypii seminis of 9 weight parts is reacted to 190min with the SULPHUR POWDER of 8 weight parts, obtain alpha-sulfonated fatty phosphate content and be 74% sulphonated oleic acid mixture; Then under amidation reaction condition, by the diethanolamine of the sulphonated oleic acid mixture of 38 weight parts and 4 weight parts, under 150 ℃ of conditions, amidate action 210min, obtains flow improver main body mixture; Finally, by the flow improver main body mixture of the sulfonation Oleum Gossypii semen mixture of 38 weight parts, 20 weight parts, the kerosene of 26 parts, the auxiliary material of 16 parts and other material, under normal temperature condition, the 140min that is mixed, obtains wear-resistant flow improver finished product CQ-1-02.Test result demonstration, this product density is density, 1.03g/cm
3, wilkinite sample slurry mill vector reduced rate 65%, increases the weight of sample slurry mill vector reduced rate 58%, and wilkinite sample slurry lubricating coefficient reduced rate 84%, increases the weight of sample slurry lubricating coefficient reduced rate 63%.
Embodiment 3:
In temperature, be under 160 ℃ of sulfonation reaction conditions, the oleum gossypii seminis of 30 weight parts is reacted to 190min with the SULPHUR POWDER of 10 weight parts, obtain alpha-sulfonated fatty phosphate content and be 79% sulfonation Oleum Gossypii semen mixture, the oleum gossypii seminis of 10 weight parts is reacted to 190min with the SULPHUR POWDER of 8 weight parts, obtain alpha-sulfonated fatty phosphate content and be 73% sulphonated oleic acid mixture; Then under amidation reaction condition, by the diethanolamine of the sulphonated oleic acid mixture of 39 weight parts and 5 weight parts, under 145 ℃ of conditions, amidate action 185min, obtains flow improver main body mixture; Finally, by the flow improver main body mixture of the sulfonation Oleum Gossypii semen mixture of 39 weight parts, 23 weight parts, the kerosene of 27 parts, the auxiliary material of 11 parts and other material, under normal temperature condition, the 125min that is mixed, obtains wear-resistant flow improver finished product CQ-1-03.Test result demonstration, this product density is density, 1.02g/cm
3, wilkinite sample slurry mill vector reduced rate 65%, increases the weight of sample slurry mill vector reduced rate 53%, and wilkinite sample slurry lubricating coefficient reduced rate 85%, increases the weight of sample slurry lubricating coefficient reduced rate 62%.
Although the present invention is described by reference to preferred embodiment,, those of ordinary skills should understand, and can be not limited to the description of above-described embodiment, in the scope of claims, can do the various variations in form and details.
Claims (9)
1. the wear-resistant flow improver of drilling fluid, is characterized in that, formula main raw material comprises vegetable oil acid, oleum gossypii seminis, SULPHUR POWDER, diethanolamine, kerosene etc.; Auxiliary material comprises tributyl phosphate, organophilic clay, T323 extreme pressure anti-wear additives etc.
2. the wear-resistant flow improver of drilling fluid according to claim 1, it is characterized in that, described drilling fluid by the weight ratio that each component in wear-resistant flow improver accounts for flow improver total amount is, vegetable oil acid 7%～13%, oleum gossypii seminis 26%～31%, SULPHUR POWDER 6%～11%, diethanolamine 3%～5%, kerosene 27%～29%, auxiliary material and other materials add up to 12%～17%.
3. the wear-resistant flow improver of drilling fluid according to claim 1, is characterized in that, in described vegetable oil acid, OA effective content is more than 95%.
4. the wear-resistant flow improver of drilling fluid according to claim 1, is characterized in that, in described Oleum Gossypii semen, oleic acid effective content is between 31%～34%, and stearic acid effective content is between 48%～61%.
5. a preparation method for wear-resistant flow improver for drilling fluid, the method comprises the following steps:
(1), under sulfonation reaction condition, according to formula rate described in claim 2, oleum gossypii seminis and SULPHUR POWDER mixture reaction are obtained to the sulfonation Oleum Gossypii semen mixture of alpha-sulfonated fatty phosphate content >=75%;
(2), under sulfonation reaction condition, according to formula rate described in claim 2, vegetable oil acid and SULPHUR POWDER mixture reaction are obtained to the sulphonated oleic acid mixture of alpha-sulfonated fatty phosphate content >=75%;
(3) under amidation reaction condition, by the sulphonated oleic acid mixture of step (2) gained with and diethanolamine hybrid reaction, obtain flow improver main body mixture;
(4) under neutralization reaction condition, by flow improver main body mixture, kerosene and the tributyl phosphate of the sulfonation Oleum Gossypii semen mixture of step (1) gained, step (3) gained, organophilic clay, the auxiliary materials such as T323 extreme pressure anti-wear additives are mixed by formula rate, obtain wear-resistant flow improver finished product.
6. the preparation method of wear-resistant flow improver for a kind of drilling fluid according to claim 5, is characterized in that, described step (1) sulfonation reaction condition comprises that temperature is 160 ℃, and the time is 170～230min.
7. the preparation method of wear-resistant flow improver for a kind of drilling fluid according to claim 5, is characterized in that, described step (2) sulfonation reaction condition comprises that temperature is 160 ℃, and the time is 160～210min.
8. the preparation method of wear-resistant flow improver for a kind of drilling fluid according to claim 5, is characterized in that, step (3) amidation reaction condition comprises that temperature is 130 ℃～150 ℃, and the time is 160～220min.
9. the preparation method of wear-resistant flow improver for a kind of drilling fluid according to claim 5, is characterized in that, step (4) neutralization reaction condition comprises that temperature is normal temperature, and the time is 120～140min.
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103937468A (en) * | 2014-04-30 | 2014-07-23 | 西南石油大学 | Novel drilling fluid lubricant and preparation method thereof |
| CN105505338A (en) * | 2015-12-25 | 2016-04-20 | 新疆德邦石油科技有限公司 | Environment-friendly type drilling fluid anti-wear agent with high temperature resistance and preparation method of environment-friendly type drilling fluid anti-wear agent |
| CN106609130A (en) * | 2015-10-27 | 2017-05-03 | 新疆真帝石油科技有限公司 | Drilling fluid extreme pressure lubricant having freezing point of lower than -25 DEG C |
| CN106833557A (en) * | 2016-12-13 | 2017-06-13 | 中国石油天然气集团公司 | A kind of lubricant for drilling fluids and preparation method and application |
| US11008496B2 (en) | 2018-11-15 | 2021-05-18 | Yangtze University | Composition for preparing anti-wear lubricant for drilling fluid and preparation method of anti-wear lubricant for drilling fluid and drilling fluid |
| WO2022161434A1 (en) * | 2021-01-28 | 2022-08-04 | 中国石油化工股份有限公司 | Multi-adsorption site lubricating additive, manufacturing method therefor and application thereof |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103937468A (en) * | 2014-04-30 | 2014-07-23 | 西南石油大学 | Novel drilling fluid lubricant and preparation method thereof |
| CN106609130A (en) * | 2015-10-27 | 2017-05-03 | 新疆真帝石油科技有限公司 | Drilling fluid extreme pressure lubricant having freezing point of lower than -25 DEG C |
| CN106609130B (en) * | 2015-10-27 | 2019-12-27 | 新疆真帝石油科技有限公司 | Extreme pressure lubricant with condensation point lower than-25 ℃ for drilling fluid and preparation method thereof |
| CN105505338A (en) * | 2015-12-25 | 2016-04-20 | 新疆德邦石油科技有限公司 | Environment-friendly type drilling fluid anti-wear agent with high temperature resistance and preparation method of environment-friendly type drilling fluid anti-wear agent |
| CN106833557A (en) * | 2016-12-13 | 2017-06-13 | 中国石油天然气集团公司 | A kind of lubricant for drilling fluids and preparation method and application |
| CN106833557B (en) * | 2016-12-13 | 2019-07-09 | 中国石油天然气集团公司 | A kind of lubricant for drilling fluids and the preparation method and application thereof |
| US11008496B2 (en) | 2018-11-15 | 2021-05-18 | Yangtze University | Composition for preparing anti-wear lubricant for drilling fluid and preparation method of anti-wear lubricant for drilling fluid and drilling fluid |
| WO2022161434A1 (en) * | 2021-01-28 | 2022-08-04 | 中国石油化工股份有限公司 | Multi-adsorption site lubricating additive, manufacturing method therefor and application thereof |
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| CN103571441B (en) | 2017-03-15 |
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