CN103013462B - Plastic ball solid lubricating agent for drilling fluid and method for preparing plastic ball solid lubricating agent - Google Patents
Plastic ball solid lubricating agent for drilling fluid and method for preparing plastic ball solid lubricating agent Download PDFInfo
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- CN103013462B CN103013462B CN201210576450.6A CN201210576450A CN103013462B CN 103013462 B CN103013462 B CN 103013462B CN 201210576450 A CN201210576450 A CN 201210576450A CN 103013462 B CN103013462 B CN 103013462B
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Abstract
The invention discloses a plastic ball solid lubricating agent for drilling fluid and a method for preparing the plastic ball solid lubricating agent. The plastic ball solid lubricating agent for the drilling fluid is prepared from the raw materials in parts by weight: 35-56 parts of styrene, 6-10 parts of divinylbenzene, 5-10 parts of acrylic acid, 5-10 parts of polytetrafluoroethylene, 10-20 parts of paraffin, 10-15 parts of silicon dioxide, 0.5-1 part of benzoyl peroxide, 0.5-1 part of polyvinyl alcohol and 0.5-1.5 parts of dodecylbenzene sulfonic acid. The method for preparing the plastic ball solid lubricating agent comprises the following five steps of resistance removing, soaking, crosslinking, sepherical boiling and grading. The high temperature resistance and extrusion resistance of the plastic ball solid lubricating agent for the drilling fluid are improved, the density is close to water density, and the plastic ball solid lubricating agent can realize the purposes of effectively lubricating and preventing blockaged.
Description
Technical field
The present invention relates to a kind of solid lubricant for well drilling liquid, particularly relate to a kind of drilling fluid baton round solid lubricant and preparation method thereof.
Background technology
In petroleum drilling operation, drilling fluid is absolutely necessary, and it can play the landwaste that carries and suspend, stabilizing borehole and equilibrium strata pressure, Cooling and Lubricator drill bit, drilling tool, transmits the effects such as water power.The quality of property of drilling fluid directly affects wellbore quality and drilling speed, simultaneously along with the development of petroleum prospecting work, drilling depth constantly increases, the drilling hole number of cluster wells, high-inclination directional well and horizontal well also increases sharply, avoid pressure differential sticking, reduce drilling tool moment of torsion, minimizing drill string wear becomes urgent problem in drilling operation.
Add in drilling fluid lubricant be reduce pressure differential sticking, reduce drilling tool moment of torsion, one of most effective measure reducing drill string wear.The lubricant used at present both at home and abroad can be divided into two large classes, and one is liquid lubricant, as the modified product etc. of oil and goods thereof, vegetable and animals oils; Two is solid lubricants, as Graphite Powder 99, molybdenum disulphide powder, plastic pellet, glass pellet and prill etc.
Wherein, the result of use of plastic pellet is better than other lubricant.It is the multipolymer produced with vinylbenzene and divinylbenzene crosslink, adds plastic pellet and makes it participate in mud cake formation, to stop the adhesion of drilling tool and mud cake, reach the object of lubricate and sticking control in drill-well operation.Plastic pellet has the display of nontoxic, odorless, unstressed configuration, the feature such as acidproof, alkaline-resisting, recyclable, and its density is generally 1.03 ~ 1.05g/cm
3, can heatproof more than 190 DEG C, ultimate compression strength is at more than 100N, and in inertia in drilling fluid, water insoluble and oils, is applicable to the drilling fluid of most of type, simultaneously on the surface viscosity of drilling fluid, yield value, filter vector without any impact.But the at present drilling fluid plastic pellet solid lubricant produced of technology, temperature resistance, anti-extrusion limited in one's ability, granularity is uneven and on the low side, and density distribution is easily uneven, can not meet the needs of drilling engineering completely; , because the density of existing plastic pellet density is bigger than normal, easily sink to the bottom in drilling fluid, skewness meanwhile, plastic pellet is restricted as the application of solid lubricant in drilling fluid.
Summary of the invention
The technical problem that the present invention solves be to provide a kind of granularity evenly, the anti-extrusion performance of high temperature resistance is good, density is close with water-mass density drilling fluid baton round solid lubricant and preparation method thereof.
For solving the problems of the technologies described above, the technical solution used in the present invention is: a kind of drilling fluid baton round solid lubricant, is made up of the raw material of following parts by weight: vinylbenzene 35 ~ 56 parts, divinylbenzene 6 ~ 10 parts, 5 ~ 10 parts, vinylformic acid, tetrafluoroethylene 5 ~ 10 parts, 10 ~ 20 parts, paraffin, silica 10 ~ 15 part, benzoyl peroxide 0.5 ~ 1 part, polyvinyl alcohol 0.5 ~ 1 part, Witco 1298 Soft Acid 0.5 ~ 1.5 part.
Further improvement of the present invention is: described paraffin is No. 56 paraffin.
Further improvement of the present invention is: the density of described drilling fluid baton round solid lubricant is 0.98 ~ 1.01g/cm
3.
Present invention also offers the preparation method of described drilling fluid baton round solid lubricant, its preparation process is:
(a) de-resistance: the stopper that vinylbenzene and divinylbenzene carry with 201 resin column filterings;
B () soaks: by vinylbenzene, divinylbenzene, vinylformic acid, tetrafluoroethylene, paraffin, silicon-dioxide and benzoyl peroxide, reactor is dropped into after weighing in proportion, add 2 ~ 3 times to the deionized water of solid materials weight, soak 10 ~ 30 minutes at 10 ~ 30 DEG C;
(c) crosslinking reaction: heated up with the speed of every 10min rising 3 ~ 5 DEG C by the mixed solution obtained in step (b), until system temperature reaches 80 ~ 90 DEG C, under high temperature, system is reacted into ball; Then add the polyvinyl alcohol and Witco 1298 Soft Acid of weighing in proportion, 85 ~ 95 DEG C are continued reaction 6 ~ 8 hours;
(d) rotary spherical digester: by water filtering after crosslinking reaction terminates, then the baton round filtered is sent into ebullated bed, temperature control 95 ~ 110 DEG C, normal pressure rotary spherical digester 3 ~ 5 hours, until baton round moisture is lower than 5%;
E () classification: carry out sieve classification to gained baton round, require that the size-grade distribution of product is: 10 ~ 30 order number of spheres are greater than 90%, 30 ~ 80 order number of spheres are less than 10%.
Owing to have employed technique scheme, the technical progress that the present invention obtains is:
The present invention improves on the system basis of preparing baton round solid lubricant conventional at present.Use polyvinyl alcohol and Witco 1298 Soft Acid two kinds of tensio-active agents as suspension polymerization dispersant, avoid the adhesion between spheroid, have adjusted the interfacial tension of monomer-aqueous phase interface, ensure that shape and the granularity of spheroid; Add temperature resistance, anti-pressure ability that tetrafluoroethylene improves baton round lubricant, and increase the oilness of product; Add the silicon-dioxide that hardness is very large, can greatly improve product compressive property and wear resisting property; Paraffin is mainly used as perforating agent, and balling-up is reacted and easily carries out, also effectively can reduce the density of product, the density making product density reach close with water, is more evenly distributed in drilling fluid, meets drilling well requirement simultaneously.
To sum up, the present invention significantly improves the high temperature resistant property of drilling fluid baton round solid lubricant and anti-extrusion performance, and density reaches the density close with water, can play the object of more effective lubrication and anti-sticking in drill-well operation.
Embodiment
Below in conjunction with specific embodiment, the present invention is described further.
Embodiment 1
One, the raw materials of the drilling fluid baton round solid lubricant of the present embodiment is by weight:
Vinylbenzene 35 parts, divinylbenzene 10 parts, 5 parts, vinylformic acid, tetrafluoroethylene 5 parts, 10 parts, paraffin, silica 15 parts, benzoyl peroxide 0.5 part, polyvinyl alcohol 0.5 part, Witco 1298 Soft Acid 0.5 part.
Two, the preparation method of the drilling fluid baton round solid lubricant of the present embodiment is:
(a) de-resistance: the stopper that vinylbenzene and divinylbenzene carry with 201 resin column filterings;
B () soaks: by vinylbenzene, divinylbenzene, vinylformic acid, tetrafluoroethylene, paraffin, silicon-dioxide and benzoyl peroxide, drop into reactor after weighing in proportion, add 2 times to the deionized water of solid materials weight, soaks 30 minutes at 20 DEG C;
(c) crosslinking reaction: heated up with the speed of every 10min rising 3 ~ 5 DEG C by the mixed solution obtained in step (b), until system temperature reaches 80 DEG C, under high temperature, system is reacted into ball; Then add the polyvinyl alcohol and Witco 1298 Soft Acid of weighing in proportion, 85 DEG C are continued reaction 8 hours;
(d) rotary spherical digester: be cooled to 70 DEG C after crosslinking reaction terminates, by water filtering, then the baton round filtered is sent into ebullated bed, temperature control 100 DEG C, normal pressure rotary spherical digester 4 hours, recording baton round moisture is 2.5%;
(e) classification: sieve classification is carried out to gained baton round.The size-grade distribution of product is: 10 ~ 30 order number of spheres 92%, 30 ~ 80 order number of spheres 8%.
Embodiment 2
One, the raw materials of the drilling fluid baton round solid lubricant of the present embodiment is by weight:
Vinylbenzene 45 parts, divinylbenzene 8 parts, 10 parts, vinylformic acid, polytetrafluoroethyl-ne 7 parts, 15 parts, paraffin, silica 12 parts, benzoyl peroxide 0.7 part, polyvinyl alcohol 0.5 part, Witco 1298 Soft Acid 0.8 part.
Two, the preparation method of the drilling fluid baton round solid lubricant of the present embodiment is:
(a) de-resistance: the stopper that vinylbenzene and divinylbenzene carry with 201 resin column filterings;
B () soaks: by vinylbenzene, divinylbenzene, vinylformic acid, tetrafluoroethylene, paraffin, silicon-dioxide and benzoyl peroxide, drop into reactor after weighing in proportion, add 2.5 times to the deionized water of solid materials weight, soaks 30 minutes at 10 DEG C;
(c) crosslinking reaction: heated up with the speed of every 10min rising 3 ~ 5 DEG C by the mixed solution obtained in step (b), until system temperature reaches 85 DEG C, under high temperature, system is reacted into ball; Then add the polyvinyl alcohol and Witco 1298 Soft Acid of weighing in proportion, 90 DEG C are continued reaction 7 hours;
(d) rotary spherical digester: be cooled to 65 DEG C after crosslinking reaction terminates, by water filtering, then the baton round filtered is sent into ebullated bed, temperature control 110 DEG C, normal pressure rotary spherical digester 3 hours, recording baton round moisture is 1.8%;
(e) classification: sieve classification is carried out to gained baton round.The size-grade distribution of product is: 10 ~ 30 order number of spheres 95%, 30 ~ 80 order number of spheres 5%.
Embodiment 3
One, the raw materials of the drilling fluid baton round solid lubricant of the present embodiment is by weight:
Vinylbenzene 56 parts, divinylbenzene 6 parts, 9 parts, vinylformic acid, tetrafluoroethylene 10 parts, 12 parts, paraffin, silica 10 part, benzoyl peroxide 0.9 part, polyvinyl alcohol 0.8 part, Witco 1298 Soft Acid 1.2 parts.
Two, the preparation method of the drilling fluid baton round solid lubricant of the present embodiment is:
(a) de-resistance: the stopper that vinylbenzene and divinylbenzene carry with 201 resin column filterings;
B () soaks: by vinylbenzene, divinylbenzene, vinylformic acid, tetrafluoroethylene, paraffin, silicon-dioxide and benzoyl peroxide, drop into reactor after weighing in proportion, add 2 times to the deionized water of solid materials weight, soaks 20 minutes at 25 DEG C;
(c) crosslinking reaction: heated up with the speed of every 10min rising 3 ~ 5 DEG C by the mixed solution obtained in step (b), until system temperature reaches 90 DEG C, under high temperature, system is reacted into ball; Then add the polyvinyl alcohol and Witco 1298 Soft Acid of weighing in proportion, 95 DEG C are continued reaction 6 hours;
(d) rotary spherical digester: be cooled to 60 DEG C after crosslinking reaction terminates, by water filtering, then the baton round filtered is sent into ebullated bed, temperature control 95 DEG C, normal pressure rotary spherical digester 5 hours, recording baton round moisture is 2.8%;
(e) classification: sieve classification is carried out to gained baton round.The size-grade distribution of product is: 10 ~ 30 order number of spheres 94%, 30 ~ 80 order number of spheres 6%.
Embodiment 4
One, the raw materials of the drilling fluid baton round solid lubricant of the present embodiment is by weight:
Vinylbenzene 40 parts, divinylbenzene 9 parts, 7 parts, vinylformic acid, tetrafluoroethylene 8 parts, 20 parts, paraffin, silica 10 part, benzoyl peroxide 1 part, polyvinyl alcohol 1 part, Witco 1298 Soft Acid 1.5 parts.
Two, the preparation method of the drilling fluid baton round solid lubricant of the present embodiment is:
(a) de-resistance: the stopper that vinylbenzene and divinylbenzene carry with 201 resin column filterings;
B () soaks: by vinylbenzene, divinylbenzene, vinylformic acid, tetrafluoroethylene, paraffin, silicon-dioxide and benzoyl peroxide, drop into reactor after weighing in proportion, add 3 times to the deionized water of solid materials weight, soaks 10 minutes at 30 DEG C;
(c) crosslinking reaction: heated up with the speed of every 10min rising 3 ~ 5 DEG C by the mixed solution obtained in step (b), until system temperature reaches 85 DEG C, under high temperature, system is reacted into ball; Then add the polyvinyl alcohol and Witco 1298 Soft Acid of weighing in proportion, 95 DEG C are continued reaction 6 hours;
(d) rotary spherical digester: be cooled to 50 DEG C after crosslinking reaction terminates by water filtering, then the baton round filtered is sent into ebullated bed, temperature control 105 DEG C, normal pressure rotary spherical digester 4 hours, recording baton round moisture is 2.1%;
(e) classification: sieve classification is carried out to gained baton round.The size-grade distribution of product is: 10 ~ 30 order number of spheres 96%, 30 ~ 80 order number of spheres 4%.
The drilling fluid baton round solid lubricant using the present invention to prepare carries out performance test, and result data is in table 1.
Table 1 drilling fluid baton round solid lubricant the performance test results
Comprehensive above-described embodiment and correlation results data, visible compared with commercially available prod, the granularity of drilling fluid baton round solid lubricant provided by the invention evenly, temperature resistance, crush resistance and wear resistance are all more excellent, density is lower, more meets the needs of drilling engineering.
Claims (3)
1. a drilling fluid baton round solid lubricant, is characterized in that being made up of the raw material of following weight part:
Vinylbenzene 35 ~ 56 parts; Divinylbenzene 6 ~ 10 parts; 5 ~ 10 parts, vinylformic acid; Tetrafluoroethylene 5 ~ 10 parts; 10 ~ 20 parts, paraffin; Silica 10 ~ 15 part; Benzoyl peroxide 0.5 ~ 1 part; Polyvinyl alcohol 0.5 ~ 1 part; Witco 1298 Soft Acid 0.5 ~ 1.5 part;
The preparation method of described drilling fluid baton round solid lubricant comprises the following steps:
(a) de-resistance: the stopper that vinylbenzene and divinylbenzene carry with 201 resin column filterings;
B () soaks: by vinylbenzene, divinylbenzene, vinylformic acid, tetrafluoroethylene, paraffin, silicon-dioxide and benzoyl peroxide, reactor is dropped into after weighing in proportion, add 2 ~ 3 times to the deionized water of solid materials weight, soak 10 ~ 30 minutes at 10 ~ 30 DEG C;
(c) crosslinking reaction: heated up with the speed of every 10min rising 3 ~ 5 DEG C by the mixed solution obtained in step (b), until system temperature reaches 80 ~ 90 DEG C, under high temperature, system is reacted into ball; Then add the polyvinyl alcohol and Witco 1298 Soft Acid of weighing in proportion, 85 ~ 95 DEG C are continued reaction 6 ~ 8 hours;
(d) rotary spherical digester: by water filtering after crosslinking reaction terminates, then the baton round filtered is sent into ebullated bed, temperature control 95 ~ 110 DEG C, normal pressure rotary spherical digester 3 ~ 5 hours, until baton round moisture is lower than 5%;
E () classification: carry out sieve classification to gained baton round, require that the size-grade distribution of product is: 10 ~ 30 order number of spheres are greater than 90%, 30 ~ 80 order number of spheres are less than 10%.
2. a kind of drilling fluid baton round solid lubricant according to claim 1, is characterized in that: described paraffin is No. 56 paraffin.
3. a kind of drilling fluid baton round solid lubricant according to claim 1, is characterized in that: the density of described drilling fluid baton round solid lubricant is 0.98 ~ 1.01g/cm
3.
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| CN201210576450.6A CN103013462B (en) | 2012-12-27 | 2012-12-27 | Plastic ball solid lubricating agent for drilling fluid and method for preparing plastic ball solid lubricating agent |
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| CN201210576450.6A CN103013462B (en) | 2012-12-27 | 2012-12-27 | Plastic ball solid lubricating agent for drilling fluid and method for preparing plastic ball solid lubricating agent |
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| CN103013462B true CN103013462B (en) | 2015-06-10 |
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| CN103484084B (en) * | 2013-09-18 | 2016-03-02 | 新疆贝肯能源工程股份有限公司 | Drilling fluid multi-functional oligomeric-type lubricant and preparation method thereof |
| CN108728052A (en) * | 2018-04-27 | 2018-11-02 | 中国石油大学(北京) | A kind of lubricant for drilling fluids and its preparation method and application |
Citations (4)
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| US5149416A (en) * | 1989-04-18 | 1992-09-22 | Eastman Kodak Company | Polymeric electrophoresis media |
| CN1468898A (en) * | 2003-07-02 | 2004-01-21 | 北京倍爱康生物技术股份有限公司 | Prepn of super-paramagnetic polymer microsphere |
| CN1752134A (en) * | 2004-09-24 | 2006-03-29 | 中国石油化工股份有限公司 | Large hole nano-composite resin material and its preparation method |
| CN100384915C (en) * | 2006-04-27 | 2008-04-30 | 天津大学 | Process for preparing electrophoresis particles of dye-coated polymer for electronic ink |
-
2012
- 2012-12-27 CN CN201210576450.6A patent/CN103013462B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5149416A (en) * | 1989-04-18 | 1992-09-22 | Eastman Kodak Company | Polymeric electrophoresis media |
| CN1468898A (en) * | 2003-07-02 | 2004-01-21 | 北京倍爱康生物技术股份有限公司 | Prepn of super-paramagnetic polymer microsphere |
| CN1752134A (en) * | 2004-09-24 | 2006-03-29 | 中国石油化工股份有限公司 | Large hole nano-composite resin material and its preparation method |
| CN100384915C (en) * | 2006-04-27 | 2008-04-30 | 天津大学 | Process for preparing electrophoresis particles of dye-coated polymer for electronic ink |
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