CN103694969A - Oil-based lubricant and application thereof - Google Patents
Oil-based lubricant and application thereof Download PDFInfo
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- CN103694969A CN103694969A CN201310751802.1A CN201310751802A CN103694969A CN 103694969 A CN103694969 A CN 103694969A CN 201310751802 A CN201310751802 A CN 201310751802A CN 103694969 A CN103694969 A CN 103694969A
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- oil
- lubricant
- drilling fluid
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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
- C09K8/035—Organic additives
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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
- C09K2208/34—Lubricant additives
Abstract
The invention relates to an oil-based lubricant and application thereof to a water-based drilling fluid. The oil-based lubricant comprises 30-70 parts of zinc dialkyl dithiophosphate and 30-70 parts of plant oil by mass. When the zinc dialkyl dithiophosphate and the plant oil are compounded into the lubricant for the water-based drilling fluid, a synergistic effect is achieved, so that the oil-based lubricant greatly reduces the rotating frictional resistance of a drill, has extreme pressure resistance and greatly improves the lubrication of the drilling fluid.
Description
Technical field
The present invention relates to a kind of oil lubricant and the application in water-base drilling fluid thereof.
Background technology
Drilling fluid refers in oil/gas drilling process with its multi-functional general name that meets the various circulating fluid of drilling well need of work, is commonly called as " mud ".The basic function of drilling fluid has: (1) drilling cuttings that carries and suspend; (2) stabilizing borehole and equilibrium strata pressure; (3) Cooling and Lubricator bit drilling tool; (4) transmit water power.
The lubricity of drilling fluid is very large to drilling well work influence.Particularly in boring deep-well, orientation well, horizontal well and cluster wells, the rotational resistance of drill string and lift resistance and can increase substantially.Owing to affecting the main adjustable factor of drilling well moment of torsion and resistance and drilling tool wearing and tearing, are lubricities of drilling fluid.Therefore the lubricity of drilling fluid, to reducing the down hole problems such as bit freezing, guarantees that safety, rapid drilling play vital effect.
According to preparation drilling fluid base fluid used, drilling fluid can be divided into oil base drilling fluid and water-base drilling fluid.The base fluid of oil base drilling fluid is exactly oil, and oilness is original just very good, does not conventionally need to add lubricant in oil base drilling fluid again.
The water-base drilling fluid using in the market can be divided into oil lubricant and water base lubricant with liquid type lubricant.Oil lubricant is to take the good various base oils of lubricity to make as the composite various synergetic effect additives of raw material, and the base oil of its use has mineral oil, vegetables oil and lipid thereof etc.Water base lubricant be take the aqueous solution as base fluid, and composite various synergetic effect additives are made.
Lot of documents has been reported with lubricator preparation method of water-base drilling fluid.Chinese patent 200510043869.5 discloses a kind of drilling fluid particle stabilized emulsion system, outward appearance is milky white emulsion, median size is at 5 μ m～40 μ m, in 100 mass parts, component is 10～40 parts of mineral oil or solid paraffins, 0.5～1.0 part of aniorfic surfactant, 0.5～5 part of active nano solid particulate, surplus is water.Also disclose the preparation method of particle stabilized emulsion system, be about to active nano solid particulate and be first scattered in water, stirred, then standing, standby; Mineral oil or solid paraffin are added to reactor, each good active nano solid particulate suspension of above-mentioned system is added in reactor, stir, anion surfactant is progressively joined in reactor simultaneously; Mixing speed is brought up to 4000～5000rpm gradually, and temperature is elevated to 40 ℃～60 ℃, and churning time is 30～60min; Obtain particle stabilized emulsion system.
Chinese patent 200510069192.2 discloses a kind of solid lubricant for well drilling liquid, and this solid lubricant is to be made by the raw material of following quality %: sodium bentonite 60%～80%, cats product 10%～20%, anion surfactant 10%～20% and a small amount of defoamer.In wilkinite drilling fluid, add 0.5% this product, add 5% diesel oil simultaneously, the drilling fluid coefficient of friction resistance can be reduced to 0.062 from original 0.36, and after adding, drilling fluid rheology does not have large variation.This product raw materials cost is lower, and preparation method is simple, easy to implement, and its oilness, rheological, high temperature resistance are all better than existing similar solid lubricant for well drilling liquid.
Chinese patent 200710158398.1 discloses a kind of preparation of high temperature resistant lubricant for drilling liquid by animal plant oil method of using.To carry out esterification reaction with waste grease and the thanomin of 3～10 parts, 5～20 parts of Diethylene Glycols that mass parts is 50～70 parts; Then adopt 1～3 part of sulphur to carry out vulcanization reaction; To reaction product, add again the oil-soluble resin of 2～5 parts and the Graphite Powder 99 of 10～30 parts, mix, stir, make high temperature resistant lubricant for drilling liquid.
Chinese patent 200810055861.4 discloses water base lubricant that a kind of drilling fluid uses and preparation method thereof, and the formula of lubricant is: 100～300 parts, water, 10～30 parts of emulsifying agents, 50～300 parts of Viscotrol C, 50～400 parts of white oils, 50～600 parts of oleate soaps, 50～200 parts of defoamers.
Chinese patent 01102104.7 discloses a kind of lubricant for drilling fluids, and the composition that it is characterized in that described lubricant is macromolecular lubricating material 5%～10%, tensio-active agent 0.1%～0.5%, adds water to 100%; Described macromolecular lubricating material comprises polyoxyethylene nonylphenyl ether, polyoxyethylene nonyl benzene two phenolic ethers, polyoxyethylene decyl phenol ether, polyoxyethylene decyl dihydroxy-benzene ether, polyoxypropylene decyl phenol ether, polyoxypropylene nonylphenyl ether; Described promoting agent is selected from NP-10, OP-10, NP-6 or tween 80.
Chinese patent 201110191877.X discloses a kind of high temperature resistant drilling fluids lubricant.It consists of: synthetic oil 38%～40%, primary emulsion 3.6%～3.7%, auxiliary emulsifying agent 1.9%～2.0%, anti-wear agent 0.8%～1.0%, temperature stabilising agent 0.8%～1.0%, nano material 0.5%～0.6%.Described synthetic oil is not contain No. 10 white oils or No. 5 white oils of the synthetic of phenyl ring; Described primary emulsion is tween 80 or polysorbate60; Described auxiliary emulsifying agent is sorbester p17 or sorbester p18; Described anti-wear agent is the styryl sulphur arteries and veins that contains wear-resistant element s or the cruel sodium salt of dodecylphosphoric acid that contains P; Described temperature stabilising agent is acrylamide (AM), and the monomer polymerizations such as 2 one acrylamido one 2 monomethyl propanesulfonic acid (AMPS), styryl thiocarbamide form; Described nano material is ultra-fine tetrafluoroethylene macromolecular material.
The lubricant effect of above-mentioned disclosed water base lubricant is conventionally not as oil lubricant, or high expensive.In above-mentioned oil lubricant, some carries out modification by complicated synthetic technology to grease, and production cost is higher.
Therefore, need a kind of water-base drilling fluid oil lubricant with low cost and improvement in performance.
Summary of the invention
The object of this invention is to provide a kind of oil lubricant.
Another object of the present invention is to provide the application of oil lubricant in water-base drilling fluid.
Oil lubricant of the present invention is comprised of the zinc dialkyl dithiophosphate (ZDDP) of 30-70 mass parts and the vegetables oil of 30-70 mass parts.
Preferably, oil lubricant of the present invention is comprised of the zinc dialkyl dithiophosphate of 40-60 mass parts and the vegetables oil of 40-60 mass parts.
Preferably, oil lubricant of the present invention is comprised of the zinc dialkyl dithiophosphate of 50 mass parts and the vegetables oil of 50 mass parts.
Vegetables oil of the present invention includes but not limited to Oleum Gossypii semen, soya-bean oil, oleum lini, Viscotrol C, rape seed oil, Yatall MA.
Wherein, the alkyl of zinc dialkyl dithiophosphate is C
3-C
12alkyl, wherein the carbon chain lengths of two alkyl can be identical or different.
Oil lubricant of the present invention can be used in the conventional water-based drilling liquid system of various oil field, and in this article, term " water-base drilling fluid " comprises fresh-water drilling fluid, salt-water drilling fluid and seawater drilling fluid.When Oil Field is used, can be to the oil lubricant of the present invention that adds 1%～5% (w/v) (based on mud cumulative volume) in suction pit.
The inventor finds, while being used as the lubricant of water-base drilling fluid after zinc dialkyl dithiophosphate and vegetables oil are composite, has produced synergistic function.Zinc dialkyl dithiophosphate can form physics film in metallic surface absorption such as drilling tool, sleeve pipes, and vegetables oil can form liquid film layer in this physics film surface adsorption, both synergies have greatly reduced the friction resistance of drilling tool rotation, and possess anti-extreme pressure ability, greatly improved the oilness of drilling fluid.In addition, they also can prevent the absorption of mud shale drilling cuttings on drilling tool, prevent drill bit, drilling tool " mud drum ", and this has further reduced friction resistance, the lubricant effect of enhancing.
Embodiment
Below in conjunction with embodiment, the present invention is described further.
Embodiment 1
50 mass parts Oleum Gossypii semens are mixed and be get final product with the pungent primary alkyl zinc dithiophosphate of 50 mass parts fourth.
Embodiment 2-6
Preparation method is with embodiment 1, and each inventory sees the following form.
Evaluation of Lubrication
Measure 300mL distilled water, add drilling fluid test sodium bentonite 36g, with after the rotating speed high-speed stirring 20min of 11000r/min, in airtight container, room temperature maintenance is no less than 16h, is mixed with the prehydration bentonite slurry containing soil amount 12%; Prepare 2 parts of polymer muds: measure 250mL seawater, add 56g prehydration bentonite slurry, 0.6g caustic soda, 0.6g soda ash, 0.9g PF-PAC LV, 0.9gPF-XC and 9g calcium soil, with barite, increase the weight of to 1.2g/cm
3, with the rotating speed high-speed stirring 20min of 11000r/min, after maintenance 4h, with the rotating speed high-speed stirring 20min of 11000r/min; The oil lubricant that adds each embodiment of 6g to make in a copy of it mud, with the rotating speed high-speed stirring 20min of 11000r/min, is polymer mud test slurry; On extreme boundary lubrication instrument, measure respectively distilled water, polymer mud and the moment of torsion reading of polymer mud test slurry in the time of 20 ℃～30 ℃, extreme boundary lubrication instrument minute must not be less than 5min, reads stationary value.Test result is as shown in table 1.
Lubricating coefficient calculates by following formula.
In formula:
The lubricating coefficient of K---sample;
The torque value of T---sample;
F---correction coefficient, be 34 with the ratio of distilled water test torque value reading.
Table 1
| ? | Distilled water torque value | Sample torque value | Lubricating coefficient K |
| Base slurry | 34.5 | 22 | 0.217 |
| Embodiment 1 | 37 | 9 | 0.083 |
| Embodiment 2 | 37 | 11.5 | 0.106 |
| Embodiment 3 | 37 | 8 | 0.074 |
| Embodiment 4 | 34.5 | 7 | 0.067 |
| Embodiment 5 | 34.5 | 6.5 | 0.064 |
| Embodiment 6 | 34.5 | 7 | 0.067 |
| Oleum Gossypii semen | 34.5 | 15.5 | 0.153 |
| The pungent primary alkyl zinc dithiophosphate of fourth | 34.5 | 20.5 | 0.202 |
As shown in Table 1, add after the oil lubricant that 2% (w/v) each embodiment makes, the lubricating coefficient of mud can be down to 0.067～0.106 by 0.217, oil lubricant prepared by this explanation the present invention possesses efficient lubricity.Add the lubricating coefficient of the mud of 2% Oleum Gossypii semen and the pungent primary alkyl zinc dithiophosphate of 2% fourth to be respectively 0.153 and 0.202, the lubricating coefficient that is all greater than the mud of oil lubricant prepared by the present invention of obtaining after adding the two composite, this illustrates that the two possesses synergistic function.
In sum; these are only preferred embodiment of the present invention, be not intended to limit protection scope of the present invention, therefore; all any modifications of doing within the spirit and principles in the present invention, be equal to replacement, improvement etc., all should be included in the protection domain being defined by claim of the present invention.
Claims (6)
1. an oil lubricant, the vegetables oil of its zinc dialkyl dithiophosphate by 30-70 mass parts and 30-70 mass parts forms.
2. oil lubricant as claimed in claim 1, the vegetables oil of its zinc dialkyl dithiophosphate by 40-60 mass parts and 40-60 mass parts forms.
3. oil lubricant as claimed in claim 1, the vegetables oil of its zinc dialkyl dithiophosphate by 50 mass parts and 50 mass parts forms.
4. the oil lubricant as described in any one in claim 1-3, wherein the alkyl of zinc dialkyl dithiophosphate is C
3-C
12alkyl.
5. the oil lubricant as described in any one in claim 1-3, wherein said vegetables oil is selected from one or more in Oleum Gossypii semen, soya-bean oil, oleum lini, Viscotrol C, rape seed oil and Yatall MA.
6. the purposes of oil lubricant claimed in claim 1 in water-base drilling fluid.
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| CN201310751802.1A CN103694969A (en) | 2013-12-31 | 2013-12-31 | Oil-based lubricant and application thereof |
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| CN201310751802.1A CN103694969A (en) | 2013-12-31 | 2013-12-31 | Oil-based lubricant and application thereof |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105368413A (en) * | 2015-11-25 | 2016-03-02 | 四川西南油大石油工程有限公司 | Anti-wear anti-seize lubricant for drilling fluid |
| CN105694826A (en) * | 2015-07-07 | 2016-06-22 | 北京鑫翔源长顺润滑油有限责任公司 | Environmental-friendly drilling fluid lubricant |
| CN105713580A (en) * | 2015-02-06 | 2016-06-29 | 北京鑫翔源长顺润滑油有限责任公司 | Drilling fluid lubricant with excellent friction reducing performance |
| CN107750268A (en) * | 2015-04-16 | 2018-03-02 | 路博润公司 | Compositions of additives and its application method for drilling fluid |
| CN108690576A (en) * | 2018-05-02 | 2018-10-23 | 中国石油大学(华东) | A kind of high temperature resistant lubricant for drilling liquid and preparation method thereof |
| CN113214804A (en) * | 2020-02-06 | 2021-08-06 | 中国石油化工股份有限公司 | Lubricant as well as preparation method and application thereof |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105713580A (en) * | 2015-02-06 | 2016-06-29 | 北京鑫翔源长顺润滑油有限责任公司 | Drilling fluid lubricant with excellent friction reducing performance |
| CN105713580B (en) * | 2015-02-06 | 2019-11-08 | 北京鑫翔源长顺润滑油有限责任公司 | A kind of lubricant for drilling fluid with excellent antifriction performance |
| CN107750268A (en) * | 2015-04-16 | 2018-03-02 | 路博润公司 | Compositions of additives and its application method for drilling fluid |
| CN105694826A (en) * | 2015-07-07 | 2016-06-22 | 北京鑫翔源长顺润滑油有限责任公司 | Environmental-friendly drilling fluid lubricant |
| CN105694826B (en) * | 2015-07-07 | 2019-11-12 | 北京鑫翔源长顺润滑油有限责任公司 | A kind of environmental-friendly type drilling liquid lubricant |
| CN105368413A (en) * | 2015-11-25 | 2016-03-02 | 四川西南油大石油工程有限公司 | Anti-wear anti-seize lubricant for drilling fluid |
| CN105368413B (en) * | 2015-11-25 | 2017-12-26 | 四川西南油大石油工程有限公司 | A kind of wear-resistant anti-seize lubricant of drilling fluid |
| CN108690576A (en) * | 2018-05-02 | 2018-10-23 | 中国石油大学(华东) | A kind of high temperature resistant lubricant for drilling liquid and preparation method thereof |
| CN113214804A (en) * | 2020-02-06 | 2021-08-06 | 中国石油化工股份有限公司 | Lubricant as well as preparation method and application thereof |
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Application publication date: 20140402 |