CN103642468B - A kind of preparation method of lubricant for drilling fluid - Google Patents
A kind of preparation method of lubricant for drilling fluid Download PDFInfo
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- CN103642468B CN103642468B CN201310687460.1A CN201310687460A CN103642468B CN 103642468 B CN103642468 B CN 103642468B CN 201310687460 A CN201310687460 A CN 201310687460A CN 103642468 B CN103642468 B CN 103642468B
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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
- C09K2208/34—Lubricant additives
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Abstract
A kind of preparation method of lubricant for drilling fluid, first sewer oil and organic alcohol amine solution are carried out amidate action under strongly alkaline conditions, and then carry out esterification with boric acid, finally add bio-surfactant and solid lubricant, mix stirring, i.e. obtained bio oil boric acid ester lubricant for drilling fluid, environmental protection of the present invention and cost is low.
Description
Technical field
The invention belongs to petroleum drilling with lubricator technical field, be specifically related to a kind of preparation method of lubricant for drilling fluid.
Background technology
Lubricant for drilling fluids is a kind of drilling fluid additive important in drilling process, its effect improves drilling fluid lubricating performance, reduce drilling tool, friction between sleeve pipe and the borehole wall, reduce the rotary torque of drill string in drilling process and the resistance produced when making a trip, the incidence of lock of tool drilling is dropped to minimum.
At present, the synthetic method of lubricant for drilling fluids mainly contains two classes, and a class is with light lubricating oil, white oil or diesel oil for raw material, by adding a certain amount of dispersion agent and emulsifying agent is composite prepares; Another kind of method is with vegetable and animals oils or waste grease for raw material, successively by amidation, esterification and prepare lubricant for drilling fluids with other components are composite.All there is distinct disadvantage in these two kinds of methods, the former is not only due to containing mineral oil component, there is higher fluorescence grade, the impact produced the analysis and inspection of geologic data is larger, and the synthesis class chemical surfactant used and mineral oil based lubricants are all difficult to biological degradation, easy formation pollutes.And although the latter makes moderate progress from production cost, environment protection and product fluorescence grade aspect, different methods has oneself deficiency:
A kind of preparation of high temperature resistant lubricant for drilling liquid by animal plant oil disclosed in CN100519687C, specifically first waste grease, thanomin and Diethylene Glycol are mixed by a certain percentage and carry out esterification, temperature of reaction controls at 110 ~ 130 DEG C, and the reaction times is 1.5 ~ 3 hours; Add a certain amount of sulphur again and carry out vulcanization reaction, temperature of reaction controls at 140 ~ 160 DEG C, and the reaction times is 3 ~ 6 hours; Add oil-soluble resin 2 ~ 5 parts and Graphite Powder 99 10 ~ 30 parts mixing again, stir, obtain high temperature resistant lubricant for drilling liquid.The shortcoming of the method is: make raw material with sulphur in reaction process on the one hand, pungent odour is larger and seriously polluted; The oil-soluble resin added on the other hand is all not ideal enough in the solvability and biological degradation of lubricating oil.
CN101597535A discloses a kind of novel organic nitrogen-containing borate ester lubricating oil additive, this invention with Viscotrol C or salad oil for raw material, successively by preparing organic nitrogen-containing borate ester lubricating oil additive with diethanolamine and acid reaction.But the raw materials cost that the method uses on the one hand is higher, it is only a kind of additive on the other hand, also need to carry out composite with other additives as lubricant for drilling fluid.
Sewer oil lubricant and preparation method thereof disclosed in CN103045183A, its preparation method is as follows: in closed reactor, add sewer oil, start to stir, when temperature of reaction kettle reaches 40 DEG C ~ 50 DEG C, stir and slowly evenly add S-WAT reaction 60 ~ 90 minutes; Add sorbitol anhydride oleate, stirring reaction 10 ~ 20 minutes, adds water, pH value is adjusted to 7 ~ 8, stirring reaction 3 ~ 8 minutes; Add extreme pressure anti-wear additives respectively, oxidation inhibitor, formaldehyde stirs 3 ~ 8 minutes, be i.e. the sewer oil lubricant of obtained water-base drilling fluid.The preparation of this series lubricant agent adds extreme pressure anti-wear additives, oxidation inhibitor etc., and not only preparation cost is higher, is not suitable for producing in enormous quantities, and the formaldehyde added can bring environmental pollution.
Utilize recyclable bio oil to prepare biodegrability drilling fluid lubricant not only low price, material source is extensive, and R&D costs are low, have the basic chemical property as lubricating oil, for high-efficiency lubricating drilling fluid system provides a kind of brand-new effective approach.But pollution-free, readily biodegradable and the low Poison characteristic of all raw materials how both could be ensured in building-up process, can realize again the desirable lubricity of product is sciences problems urgently to be resolved hurrily always.
Summary of the invention
In order to overcome the shortcoming of above-mentioned prior art, the object of the present invention is to provide a kind of preparation method of lubricant for drilling fluid, environmental protection and cost is low.
In order to achieve the above object, the technical scheme that the present invention takes is:
A preparation method for lubricant for drilling fluid, comprises the following steps:
1) amidate action: by sewer oil 40 ~ 60 parts, organic alcohol amine 16 ~ 20 parts, mass concentration be 30% alkaline solution 6 ~ 12 parts carry out amidate action, temperature of reaction controls at 100 DEG C ~ 120 DEG C, reaction times is 4h ~ 6h, the abendoned oil that described sewer oil is hogwash fat, frying waste oil, food and relevant enterprise produce, wherein content of vegetable oil is 40% ~ 70%, animal oil content is 30% ~ 60%, and described alkaline solution is NaOH or KOH solution, and described organic alcohol amine is diethanolamine;
2) esterification: be cooled to 60 DEG C ~ 70 DEG C, get 6 ~ 12 parts of boric acid and add in the obtained reactant of step 1) and react, the reaction times is 2 ~ 4h;
3) in step 2) add bio-surfactant 0.1 ~ 0.5 part and solid lubricant 1 ~ 5 part in obtained reactant, mixing, 30-50 DEG C uniform stirring 20-40min, i.e. obtained bio oil boric acid ester lubricant for drilling fluid, described bio-surfactant is microbial metabolites lipopeptid, rhamnolipid and sophorolipid, described solid lubricant is Graphite Powder 99
Described number is parts by weight.
Technique scheme of the present invention has the following advantages than prior art:
1, lubricant for drilling fluid provided by the invention integrates liquid lubricant and solid lubricant, can resist 180 DEG C of high temperature, has good water-soluble and lubrication drag reduction effect.In fresh-water drilling fluid and seawater drilling fluid, lubricant effect is better, has certain salt resistance.
2, lubricant for drilling fluid provided by the present invention is not containing the mineral oils material being difficult to degrade, and nontoxic environmentally safe, does not disturb the prospect pit of geology fluorescence and well logging, can meet the requirement of geology prospect pit well logging and environmental protection.Change drilling fluid except improving drilling fluid lubricating performance, to other performances of drilling fluid, as apparent viscosity, filter loss etc. almost do not affect.
3, lubricant for drilling fluid raw material sewer oil provided by the present invention is with low cost, and preparation technology is simple, easy to use, can meet the low cost requirement of drilling well.Efficiently solve the problem that waste grease returns to dining table, have obvious social and economic benefits.
4, not only cost is low for the lipopeptid tensio-active agent added in lubricant, production process is simple, and there is ultralow micelle-forming concentration, nontoxic, readily biodegradable, the consumption effectively overcoming traditional chemical synthetic surfactant is large, strong toxicity and be difficult to the shortcomings such as biological degradation.
Embodiment
Below in conjunction with embodiment, the present invention is described in detail.
Embodiment 1
A preparation method for lubricant for drilling fluid, comprises the following steps:
1) amidate action: the NaOH solution 12g of sewer oil 40g, diethanolamine 20g, mass concentration 30% is carried out amidate action, temperature of reaction controls at 110 DEG C, and the reaction times is 5h;
2) esterification: be cooled to 65 DEG C, get 12g boric acid and add in the obtained reactant of step 1) and react, temperature of reaction controls at 60 DEG C ~ 70 DEG C, and the reaction times is 4h;
3) in step 2) add lipopeptid tensio-active agent 0.5g and solid lubricant 1g, mixing, 30 DEG C of uniform stirring 30min in obtained reactant, i.e. obtained bio oil boric acid ester lubricant for drilling fluid, solid lubricant is Graphite Powder 99.
Embodiment 2
A preparation method for lubricant for drilling fluid, comprises the following steps:
1) amidate action: the KOH solution 8g of sewer oil 55g, diethanolamine 18g, mass concentration 30% is carried out amidate action, temperature of reaction controls at 100 DEG C, and the reaction times is 4h;
2) esterification: cooling control temperature is 60 DEG C, get 6g boric acid and add in the obtained reactant of step 1) and react, temperature of reaction controls at 60 DEG C ~ 70 DEG C, and the reaction times is 2h;
3) in step 2) add lipopeptid tensio-active agent 0.1g and solid lubricant 3g, mixing, 40 DEG C of uniform stirring 20min in obtained reactant, i.e. obtained bio oil boric acid ester lubricant for drilling fluid, solid lubricant is Graphite Powder 99.
Embodiment 3
A preparation method for lubricant for drilling fluid, comprises the following steps:
1) amidate action: the NaOH solution 6g of sewer oil 60g, diethanolamine 16g, mass concentration 30% is carried out amidate action, temperature of reaction controls at 120 DEG C, and the reaction times is 6h, and organic alcohol amine is diethanolamine;
2) esterification: be cooled to 70 DEG C, get 8g boric acid and add in the obtained reactant of step 1 and react, temperature of reaction controls at 70 DEG C, and the reaction times is 3h;
3) in step 2) add rhamnosyl tensio-active agent 0.3g and solid lubricant 5g, mixing, 50 DEG C of uniform stirring 40min in obtained reactant, i.e. obtained bio oil boric acid ester lubricant for drilling fluid, solid lubricant is Graphite Powder 99.
The effect experimental of lubricant of the present invention
1, lubricant for drilling fluid of the present invention adds rear to the test of drilling well base slurry lubricity
Measure by China National Petroleum Corporation (CNPC) company standard Q/SY1088-2007 " technical requirements of drilling fluid liquid lubricant " with reference to SY/T6094-94 " lubricant for drilling fluids assessment process ".By the lubricant for drilling fluid obtained described in embodiment 1 ~ 3, joining density is successively 1.05g/cm
3drilling fluid fresh water-based slurry in, the weight percent concentration added is 1%.Its lubricating coefficient reduced rate is measured, with the viscosity parameter of the fast rotary viscosity design determining drilling fluid of ZNN-D6 type six, with the API filtration of pressing filter press to measure drilling fluid in ZNS-2 type with E-P extreme boundary lubrication instrument.Its lubricity is as shown in table 1.Wherein fresh-water drilling fluid formula is: 400mL distilled water+20.0g sodium bentonite+0.8g soda ash.
The lubricity of table 1 lubricant in fresh-water drilling fluid
Note: probe temperature is 25 DEG C; △ AV is apparent viscosity lift-off value; PV is plastic viscosity; YP is yield value; △ FL
aPIfor press filtration vector decreasing value in normal temperature.
Illustrate that lubricant for drilling fluid property indices obtained described in the embodiment of the present invention 1 ~ 3 all reaches requirement, on brill leak-off substantially without impact, but significantly can improve the lubricity of high density drilling fluid base slurry, its lubricating coefficient reduced rate, much larger than 65%, can submit onsite application to.
2, lubricant high-temperature resistance test
Lubricant for drilling fluid obtained described in the embodiment of the present invention 1 ~ 3 by 1% adds in fresh water-based slurry, measures the change of its lubricity after heat rolls 16h at 160 DEG C, 180 DEG C, 200 DEG C respectively.Experimental results sees the following form shown in 2.
The different heat of table 2 rolls the impact of temperature on drilling fluid lubricating performance
Note: probe temperature is 25 DEG C; △ AV is apparent viscosity; PV is plastic viscosity; YP is yield value; △ FL
aPIfor press filtration vector decreasing value in normal temperature.
Illustrate that the heat-resisting property of lubricant for drilling fluid obtained described in the embodiment of the present invention 1 ~ 3 is good.After high-temperature hot is rolled, its lubricating coefficient reduced rate slightly declines, but still remains very high lubricity, can meet the requirement of on-the-spot drilling well completely.
3, each physicochemical property of embodiment 1 ~ 3 lubricant for drilling fluid
The property indices of table 3 lubricant for drilling fluid
Claims (4)
1. a preparation method for lubricant for drilling fluid, is characterized in that, comprises the following steps:
1) amidate action: by sewer oil 40 ~ 60 parts, organic alcohol amine 16 ~ 20 parts, mass concentration be 30% alkaline solution 6 ~ 12 parts carry out amidate action, temperature of reaction controls at 100 DEG C ~ 120 DEG C, reaction times is 4h ~ 6h, the abendoned oil that described sewer oil is hogwash fat, frying waste oil, food and relevant enterprise produce, wherein content of vegetable oil is 40% ~ 70%, animal oil content is 30% ~ 60%, described alkaline solution is NaOH or KOH solution, and described organic alcohol amine is diethanolamine;
2) esterification: be cooled to 60 DEG C ~ 70 DEG C, gets 6 ~ 12 parts of boric acid and adds step 1) to react in obtained reactant, the reaction times is 2 ~ 4h;
3) in step 2) add bio-surfactant 0.1 ~ 0.5 part and solid lubricant 1 ~ 5 part in obtained reactant, mixing, 30-50 DEG C uniform stirring 20-40min, i.e. obtained bio oil boric acid ester lubricant for drilling fluid, described bio-surfactant is microbial metabolites lipopeptid, rhamnolipid or sophorolipid, described solid lubricant is Graphite Powder 99
Described number is parts by weight.
2. the preparation method of a kind of lubricant for drilling fluid according to claim 1, is characterized in that, comprise the following steps:
1) amidate action: the NaOH solution 12g of sewer oil 40g, diethanolamine 20g, mass concentration 30% is carried out amidate action, temperature of reaction controls at 110 DEG C, and the reaction times is 5h;
2) esterification: be cooled to 65 DEG C, gets 12g boric acid and adds step 1) to react in obtained reactant, temperature of reaction controls at 60 DEG C ~ 70 DEG C, and the reaction times is 4h;
3) in step 2) add lipopeptid tensio-active agent 0.5g and solid lubricant 1g, mixing, 30 DEG C of uniform stirring 30min in obtained reactant, i.e. obtained bio oil boric acid ester lubricant for drilling fluid, solid lubricant is Graphite Powder 99.
3. the preparation method of a kind of lubricant for drilling fluid according to claim 1, is characterized in that, comprise the following steps:
1) amidate action: the KOH solution 8g of sewer oil 55g, diethanolamine 18g, mass concentration 30% is carried out amidate action, temperature of reaction controls at 100 DEG C, and the reaction times is 4h;
2) esterification: cooling control temperature is 60 DEG C, gets 6g boric acid and adds step 1) to react in obtained reactant, temperature of reaction controls at 60 DEG C ~ 70 DEG C, and the reaction times is 2h;
3) in step 2) add lipopeptid tensio-active agent 0.1g and solid lubricant 3g, mixing, 40 DEG C of uniform stirring 20min in obtained reactant, i.e. obtained bio oil boric acid ester lubricant for drilling fluid, solid lubricant is Graphite Powder 99.
4. the preparation method of a kind of lubricant for drilling fluid according to claim 1, is characterized in that, comprise the following steps:
1) amidate action: the NaOH solution 6g of sewer oil 60g, diethanolamine 16g, mass concentration 30% is carried out amidate action, temperature of reaction controls at 120 DEG C, and the reaction times is 6h;
2) esterification: be cooled to 70 DEG C, get 8g boric acid and add in the obtained reactant of step 1 and react, temperature of reaction controls at 70 DEG C, and the reaction times is 3h;
3) in step 2) add rhamnosyl tensio-active agent 0.3g and solid lubricant 5g, mixing, 50 DEG C of uniform stirring 40min in obtained reactant, i.e. obtained bio oil boric acid ester lubricant for drilling fluid, solid lubricant is Graphite Powder 99.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107828390A (en) * | 2017-11-08 | 2018-03-23 | 常州万博金属构件厂 | A kind of preparation method of drilling fluid lubricant emulsion |
| CN109054777A (en) * | 2018-08-17 | 2018-12-21 | 石家庄华莱鼎盛科技有限公司 | Solid lubricant for well drilling liquid polysaccharid derivative and preparation method thereof |
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| CN104194739A (en) * | 2014-08-01 | 2014-12-10 | 无棣华信石油技术服务有限公司 | Lubricant for drilling fluid and preparation method thereof |
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