CN104140789B - A kind of oil base drilling fluid heat resisting fluid loss reducing agent and preparation method thereof - Google Patents
A kind of oil base drilling fluid heat resisting fluid loss reducing agent and preparation method thereof Download PDFInfo
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- 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
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Abstract
The present invention relates to the oil base drilling fluid that a kind of field of oil drilling is used, further say, be to be related to a kind of oil base drilling fluid heat resisting fluid loss reducing agent and preparation method thereof.The fluid loss additive is made with the raw material including Humic Acid Resin, low-boiling point alcohol and organic amine, the fluid loss additive is in diesel oil base, mineral oil base and synthetic base drilling fluid system, there is good filtrate reducing effect, temperature resistance can reach 200 DEG C, good, the advantages of the meeting environmental requirement with temperature resistance.The preparation method of the present invention, by reaction scheme reasonable in design, can complete to prepare under 70~120 DEG C of temperate condition.There is this method reaction condition gently easily to realize, energy consumption is low, production equipment requires low, and organic amine starting materials loss is few, and overall economic efficiency is good and other effects, be suitable for popularization and application.
Description
Technical field
The present invention relates to the oil base drilling fluid that a kind of field of oil drilling is used, further say, be to be related to a kind of oil base
Drilling fluid heat resisting fluid loss reducing agent and preparation method thereof.
Background technology
Oil base drilling fluid have strong inhibition capability, lubricity it is excellent, beneficial to many merits such as wellbore stability and reservoir protections,
It is the effective means that drilling applications tackle bad ground, is used widely.Compared with water-base drilling fluid, oil base drilling fluid is used
Oil phase is as the continuous phase of system, therefore its cost is of a relatively high, and its filtrate is oil phase in oil base drilling fluid drilling process, therefore
Control of the oil base drilling fluid to leak-off requires higher.Being presently used for the fluid loss additive of oil base drilling fluid mainly includes the production of pitch class
Product and modified humic acid class product, wherein pitch class fluid loss additive have preferable filtrate reducing effect under middle low temperature, but in height
Under the conditions of temperature（≥150℃）, pitch easily softens, and causes filtrate reducing effect to decline, while causing oil base drilling fluid system to be moulded
Property viscosity significantly rise, reduce rate of penetration；Furthermore, pitch easily causes environmental pollution, therefore the use of such fluid loss additive
Scope has become increasingly limited.
Modified humic acid class fluid loss additive makes it be changed into oleophylic by hydrophilic by humic-acid kind raw material is chemically modified, is used for
Oil base drilling fluid is used as fluid loss additive.For example, U.S.'s humic acid reacts with polyalkylene polyamine, Britain's same long-chain of humic acid
Fatty amine or substituted aniline are pyrolyzed copolymerization, high temperature heat-flash of country's humic acid with organic amine at 160 DEG C~200 DEG C under stress
Lower amidatioon.
Such as CN101624516A discloses a kind of oil base drilling fluid fluid loss additive and its compound method, and it is mainly prepared
Method is that Humic Acid Resin and organic amine are put into closed container, after nitrogen flooding oxygen, heats container to 180~200 DEG C,
8~10 hours maintenance reaction time, room temperature is cooled to after the completion of reaction, product was then crushed into 60 mesh sieves, produce oil base brill
Well liquid fluid loss additive product.The raw material, preparation technology are different from the present invention, not comprising ester exchange reaction；And it reacts bar
Part requires harsher, need to be reacted under 180~200 DEG C of hot conditions, and need reaction vessel enclosed high pressure, equipment requirement
Height, is 8~10 hours furthermore the reaction time is longer.
Above-mentioned preparation method generally existing reaction temperature is high, energy consumption is big, reaction vessel requires that the high, reaction time is long, reaction
During organic amine is volatile the shortcomings of cause wastage of material, low yield and deficiency.
The content of the invention
, can be under mild reaction conditions this invention address that providing one kind to solve the above-mentioned problems in the prior art
Obtained oil base drilling fluid heat resisting fluid loss reducing agent and preparation method thereof.
One of the object of the invention is to provide a kind of oil base drilling fluid heat resisting fluid loss reducing agent, by including Humic Acid Resin,
Raw material including low-boiling point alcohol and organic amine is prepared by following reaction：It is esterified by Humic Acid Resin with low-boiling point alcohol
Reaction, its gained intermediate product carries out amidation process with organic amine again and obtains the oil base drilling fluid high temperature resistance filtrate reducing
Agent.
Wherein, in the esterification of Humic Acid Resin and low-boiling point alcohol, counted by 100 parts by weight of Humic Acid Resin, it is low
Boiling point alcohol is 100~1000 parts, preferably 400~600 parts；In the amidation process of the intermediate product and organic amine, in
Between product be 100 parts by weight meters, organic amine be 30~40 parts, preferably 34~36 parts.
Humic Acid Resin described above can select various Humic Acid Resins published in the prior art, also refer to
Humic Acid Resin disclosed in CN101624516A.
Specifically, the Humic Acid Resin can be prepared from by the preparation method comprised the following steps：
1）200~300 parts of humates are first added in 600 parts by weight water, stirring is completely dissolved it.
2）20~60 parts are added, reaction is stirred at room temperature in preferably 30~40 Bronsted acids；Product is filtered after reacting, clearly
Wash；The time of reaction can fully be stopped with reacting, and be not particularly limited, and may generally be 1~2.5 hour.
3）By the product drying after washing, crush.Drying can be carried out at 80~120 DEG C, general drying time can be 4~
10 hours.
At least one of the preferable humic acid potassium of humate, sodium humate；
At least one of the preferable hydrochloric acid of Bronsted acid, sulfuric acid, nitric acid and phosphoric acid.
Low boiling alcohols described above is volatile small molecular alcohol, and its boiling point is preferably at 60~90 DEG C；More preferably methanol,
At least one of ethanol, propyl alcohol and isopropanol.
Organic amine described above may be selected from least one of material that following three kinds of formulas are represented：
（1）R1-NH2, wherein R1Selected from carbon atom number in 6~30（It is preferred that 8~16, more preferably 10~12）Saturation
Carbochain, unsaturated carbon chains, cycloalkyl or aryl；
（2）R1-HN-R2, wherein R1Selected from carbon atom number in the range of 6~30（It is preferred that 8~16, more preferably 10~12）
Saturated carbon chains, unsaturated carbon chains, cycloalkyl or aryl；R2Selected from carbon atom number in the range of 1~30（It is preferred that 1~
8, more preferably 1~4）Saturated carbon chains, unsaturated carbon chains, cycloalkyl or aryl；
（3）H2N-R1-(NH-CnH2n)m-NH2, wherein R1Selected from carbon atom number in the range of 1~20（It is preferred that 2~12,）
Saturated carbon chains, unsaturated carbon chains, cycloalkyl or aryl；N is 1~6, preferably 2~4；M is 0~20, preferably 0~8.
It preferably is selected from least one of following material：
N-hexylamine, n-octyl amine, positive two cetylamine, 12- amido laurylenes, cyclohexylamine, open-chain crown ether, to cetyl benzene
Amine, n-hexyl methyl amine, double-n-octyl amine, double-dodecyl amine, 1- laurylene ylmethyl amine, cyclohexylethylamine, ethyl
Phenyl amine, methanediamine, ethylenediamine, 1,3- propane diamine, 1,6- hexamethylene diamines, 1,4- cyclohexanediamine, 1,18- octadecyl diamines, 1,
30- melissyl diamines, diethylenetriamine, triethylene tetramine, TEPA, pentaethylene hexamine..
The two of the object of the invention are to provide a kind of preparation method of oil base drilling fluid heat resisting fluid loss reducing agent, specific next
Say, it may include following reactions steps：
The first step：100 parts by weight Humic Acid Resins are taken, 100~1000 parts of low-boiling point alcohols, 5~30 parts of esterifications are added
With catalyst, solution boiling is heated in inert gas environment, esterification is carried out at reflux, then drying, powder
It is broken, that is, obtain intermediate product；Wherein, preferably 400~600 parts of low-boiling point alcohol, preferably 12~18 parts of catalyst.
The reaction is carried out preferably under the conditions of return stirring, and the reaction time is not particularly limited, abundant to reacting, typically
It can be 5~8 hours；The drying temperature and time are also not particularly limited so that intermediate product is fully dried, typically 80~
Dried 4~10 hours at 120 DEG C.
Second step：100 parts of intermediate products are taken, 30~40 parts of organic amines, 5~20 parts of ester exchange catalyst mixing are added
Uniformly, in inert gas environment, amidation process is carried out at 70~120 DEG C, preferably 80~100 DEG C, while constantly isolating
Accessory substance low-boiling point alcohol, that is, obtain purpose product；Wherein, preferably 34~36 parts of organic amine, ester exchange catalyst preferably 12~16
Part.
The reaction is preferably carried out under agitation, and reaction may generally be 5~8 hours to fully.
Inert gas described in method made above may be selected from disclosed various inert gases, preferably nitrogen in the prior art
At least one of gas, helium and argon gas.
It is anti-that esterification described in the method first step made above may be selected from esterification commonly used in the prior art with catalyst
Catalyst, preferably at least one of acid catalyst or esters catalyst are answered,
Wherein, the acid catalyst may be selected from least one of sulfuric acid, phosphoric acid and nitric acid, and the esters catalyst can
It is different selected from methyl formate, Ethyl formate, propyl formate, isopropyl formate, methyl acetate, ethyl acetate, propyl acetate and acetic acid
At least one of propyl ester；
Ester exchange catalyst described in second step may be selected from ester exchange catalyst commonly used in the prior art, and preferred bases are urged
At least one of agent or metal-based catalysts；Wherein, the alkali catalyst is selected from lithium hydroxide, potassium hydroxide, hydrogen-oxygen
Change at least one of sodium, calcium hydroxide and calcium oxide；
The metallic catalyst is selected from organotin ester exchange catalyst, organic zinc ester exchange catalyst, lithium methoxide, ethanol
Lithium, lithium propoxide, isopropyl lithium alkoxide, sodium methoxide, caustic alcohol, sodium propoxide, sodium isopropylate, potassium methoxide, potassium ethoxide, potassium propoxide, isopropanol
At least one of potassium, calcium methoxide, calcium ethoxide, calcium propoxide, calcium isopropoxide.
The oil base drilling fluid that the present invention is provided can be applied to oil phase drilling fluid commonly used in the art with heat resisting fluid loss reducing agent,
Such as diesel oil base, mineral oil base and synthetic base drilling fluid（The adopted name of drilling well industry）, and in up to 200 DEG C of use environment
Under have good control filtration effect, when heat resisting fluid loss reducing agent dosage under the conditions of 200 DEG C is 2~5%, above-mentioned oil base is bored
The API filtration of well liquid is less than 10mL.
The preparation method of the oil base drilling fluid heat resisting fluid loss reducing agent of the present invention, can by reaction scheme reasonable in design
Under 70~120 DEG C, preferably 80~100 DEG C of mild reaction conditions, closed using Humic Acid Resin, small molecular alcohol and organic amine
Into the fluid loss additive of oil-base drilling fluid of high temperature resistance.There is this method reaction condition gently easily to implement, and organic amine starting materials loss is few, comprehensive
The advantages of closing good in economic efficiency；And fluid loss additive of oil-base drilling fluid prepared by this method has temperature resistance good, meeting environmental protection will
The outstanding advantages such as seek.
Generally speaking, the present invention has the effect that：
（1）Fluid loss additive of the present invention can be applied to diesel oil base, mineral oil base and synthetic base drilling fluid.
（2）Fluid loss additive of the present invention is respectively provided with good control filtration effect at 200 DEG C.
（3）Bio-toxicity of the present invention is low, beneficial to environmental protection.
（4）The preparation method reaction condition of fluid loss additive of the present invention gently easily realizes that energy consumption is low, production equipment requires low,
Organic amine starting materials loss is few, and overall economic efficiency is good.
Embodiment
With reference to specific embodiment, the present invention will be further described.But the present invention is not limited in following embodiments.
The chemical reagent used in the present embodiment is commercially available prod commonly used in the art.
Prepare embodiment
1. the preparation of Humic Acid Resin
（1）600 milliliters are poured into 1 liter of beaker（600g）Distilled water, first adds 250 grams of humic acid potassium stirrings completely molten
Solution, adds 20 milliliters of phosphoric acid, and reaction 2 hours is stirred at room temperature, product after reaction is filtered, is washed with water 3 times.Will washing
Product afterwards is dried 6 hours at 90 DEG C, and moisture is less than 5%.It will dry after product crushing, and cross 60 mesh sieves, that is, obtain standby
Humic Acid Resin 1.
（2）600 milliliters are poured into 1 liter of beaker（600g）Distilled water, first adds 200 grams of sodium humate stirrings completely molten
Solution, adds 60 milliliters of nitric acid, and reaction 1.5 hours is stirred at room temperature, product after reaction is filtered, is washed with water 3 times.It will wash
Product after washing is dried 5 hours at 100 DEG C, and moisture is less than 5%.It will dry after product crushing, and cross 60 mesh sieves, that is, obtain
Standby Humic Acid Resin 2.
2. the oil base drilling fluid preparation of heat resisting fluid loss reducing agent product
Embodiment 1
The first step
100 grams of Humic Acid Resins 1 are taken, 125 milliliters are added（100.0g）Methanol, add 3 milliliters of catalyst of esterification
（2.7g）Methyl acetate and 2 milliliters（3.68g）Sulfuric acid, stirring reaction 8 hours, Ran Hou in nitrogen environment, under reflux state
Dried 5 hours at 90 DEG C, 60 mesh sieves are crossed after crushing, that is, obtain intermediate product.
Second step
100 grams of above-mentioned intermediate products are taken, 35 grams of organic amine C are added10H21-NH2, 5 grams of potassium hydroxide of ester exchange catalyst mix
Close uniform, the stirring reaction 8 hours in nitrogen environment, at 75 DEG C, while constantly isolating methanol.After be cooled to room temperature, crush
60 mesh sieves are crossed, that is, obtain oil base drilling fluid heat resisting fluid loss reducing agent product.
Embodiment 2
The first step
100 grams of Humic Acid Resins 2 are taken, 600 milliliters are added（475g）Ethanol, add 12 milliliters of catalyst of esterification
（10.8g）Ethyl acetate and 5 milliliters（8.45g）Phosphoric acid, stirring reaction 5 hours, Ran Hou in ar gas environment, under reflux state
Dried 5 hours at 95 DEG C, 60 mesh sieves are crossed after crushing, that is, obtain intermediate product.
Second step
100 grams of above-mentioned intermediate products are taken, 30 grams of organic amine C are added12H25-NH-CH3, 10 grams of organotin ester exchange catalysts
It is well mixed, the stirring reaction 7 hours in ar gas environment, at 80 DEG C, while constantly isolating ethanol.After be cooled to room temperature, powder
The broken mesh sieve of mistake 60, that is, obtain oil base drilling fluid heat resisting fluid loss reducing agent product.
Embodiment 3
The first step
100 grams of Humic Acid Resins 1 are taken, 750 milliliters are added（600g）Isopropanol, add 10 milliliters of catalyst of esterification
Isopropyl acetate（8.8g）With 5 milliliters（7.5g）Nitric acid, stirring reaction 7 hours, Ran Hou in nitrogen environment, under reflux state
Dried 4.5 hours at 100 DEG C, 60 mesh sieves are crossed after crushing, that is, obtain intermediate product.
Second step
100 grams of above-mentioned intermediate products are taken, 40 grams of H are added2N-C12H24-NH2, 20 grams of calcium hydroxides be well mixed, in nitrogen
Stirring reaction 6.5 hours in environment, at 95 DEG C, while constantly isolating isopropanol.After be cooled to room temperature, crushed 60 mesh sieves,
Obtain oil base drilling fluid heat resisting fluid loss reducing agent product.
Embodiment 4
The first step
100 grams of Humic Acid Resins 2 are taken, 1000 milliliters are added（790g）Propyl alcohol, add 10 milliliters of catalyst of esterification
（9.0g）Propyl acetate and 12 milliliters（20.3g）Phosphoric acid, stirring reaction 8 hours, Ran Hou in nitrogen environment, under reflux state
Dried 4.5 hours at 100 DEG C, 60 mesh sieves are crossed after crushing, that is, obtain intermediate product.
Second step
100 grams of above-mentioned intermediate products are taken, 40 grams of H are added2N-C2H4-(NH-C2H4)2-NH2, 10 grams of sodium propoxides be well mixed,
The stirring reaction 8 hours in nitrogen environment, at 100 DEG C, while constantly isolating propyl alcohol.After be cooled to room temperature, crushed 60 mesh
Sieve, that is, obtain oil base drilling fluid heat resisting fluid loss reducing agent product.
Measure of merit embodiment
The making of oil base drilling fluid：
For the effect of effective evaluation high temperature resistance fluid loss additive of oil-base drilling fluid of the present invention, adopt and configure oil base with the following method
Drilling fluid：Oil base drilling fluid base oil is put into jar（Diesel oil, white oil or gas liquefaction）, added under strong stirring
Emulsifying agent and wetting agent, 5~10min of high-speed stirred；Then a certain amount of CaCl is added2Salt solution（CaCl2Mass concentration be 0~
40%）, 30~40min of high-speed stirred；Then organoclay, calcium oxide and oil base drilling well of the present invention are sequentially added into mixed system
Then liquid heat resisting fluid loss reducing agent, strong stirring 20min after every kind of material is added adds barite to required density, used
Strong stirring 30min again after material is added, referring next to GB/T16782-1997 determine the ES of oil base drilling fluid, AV, PV, YP,
FFLAPIAnd FLHTHP。
Embodiment 5
White oil drilling fluid system base slurry formula：
The CaCl that 100 parts of 3# white oils, 33 parts of mass concentrations are 25%2The aqueous solution, 5 parts of emulsifying agents（Sorbester p17 and mahogany acid
Calcium compound, the two weight compares 7:3）, 3 parts of CaO, 4 parts of organo montmorillonites, 1 part of wetting agent（Cetyl trimethylammonium bromide）,
Density is weighed out to for 1.20g/cm using barite3.After 200 DEG C of heat are rolled 16 hours, test result is shown in Table 1.
Table 1
Embodiment 6
Diesel oil drilling fluid system base slurry formula：
The CaCl that 100 parts of 0# diesel oil, 25 parts of mass concentrations are 20%2The aqueous solution, 6 parts of emulsifying agents, 4 parts of CaO, 4 parts it is organic
Soil, 2 parts of wetting agents, density is weighed out to for 1.50g/cm using barite3.After 200 DEG C of heat are rolled 16 hours, test result is shown in Table 2.
Emulsifying agent used, organoclay and wetting agent be the same as Example 5.
Table 2
From the data of table 1,2：The fluid loss additive prepared using the method for the invention is in white oil and diesel oil base drilling well
In liquid system, there is good filtrate reducing effect, temperature resistance can reach 200 DEG C.After 200 DEG C of heat are rolled 16 hours, oil base drilling fluid
API filtration be less than 10mL.Can standby maintenance system there is good rheological characteristic, rational ratio of dynamic shear force/yield value to plastic viscosity is adapted for orientation
Well construction.
Claims (17)
1. a kind of preparation method of oil base drilling fluid heat resisting fluid loss reducing agent, including following reactions steps：
The first step：100 parts by weight Humic Acid Resins are taken, 100~1000 parts of low-boiling point alcohol is added, 5~30 parts of esterification is added
Anti- applications catalyst, solution boiling is heated in inert gas environment, esterification is carried out at reflux；Then dry
It is dry, crush, that is, obtain intermediate product；Wherein described low-boiling point alcohol is small molecular alcohol of the boiling point at 60~90 DEG C；
Second step：Intermediate product described in 100 parts by weight is taken, 30~40 parts of organic amine is added, the ester exchange for adding 5~20 parts is urged
Agent is well mixed, and in inert gas environment, amidation process is carried out at 70~120 DEG C, while constantly isolating accessory substance
Low-boiling point alcohol, that is, obtain purpose product.
2. the preparation method of oil base drilling fluid heat resisting fluid loss reducing agent as claimed in claim 1, it is characterised in that：The first step
Described in low-boiling point alcohol addition be 400~600 parts.
3. the preparation method of oil base drilling fluid heat resisting fluid loss reducing agent as claimed in claim 1, it is characterised in that：The first step
Described in esterification catalyst addition be 12~18 parts.
4. the preparation method of oil base drilling fluid heat resisting fluid loss reducing agent as claimed in claim 1, it is characterised in that：Second step
Described in organic amine addition be 34~36 parts.
5. the preparation method of oil base drilling fluid heat resisting fluid loss reducing agent as claimed in claim 1, it is characterised in that：Second step
Described in ester exchange catalyst addition be 12~16 parts.
6. the preparation method of oil base drilling fluid heat resisting fluid loss reducing agent as claimed in claim 1, it is characterised in that：Second step
Described in amidation process temperature be 80~100 DEG C.
7. the preparation method of oil base drilling fluid heat resisting fluid loss reducing agent as claimed in claim 1, it is characterised in that：
Described inert gas is selected from least one of nitrogen, helium and argon gas；
Esterification described in the first step is selected from least one of acid catalyst or esters catalyst with catalyst,
Wherein, the acid catalyst is selected from least one of sulfuric acid, phosphoric acid and nitric acid, and the esters catalyst is selected from formic acid
In methyl esters, Ethyl formate, propyl formate, isopropyl formate, methyl acetate, ethyl acetate, propyl acetate and isopropyl acetate
It is at least one；
Ester exchange catalyst described in second step is selected from alkali catalyst or metal-based catalysts；Wherein, the alkali catalyst
Selected from least one of lithium hydroxide, potassium hydroxide, sodium hydroxide, calcium hydroxide and calcium oxide；
The metallic catalyst is selected from organotin ester exchange catalyst, organic zinc ester exchange catalyst, lithium methoxide, lithium ethoxide, third
Lithium alkoxide, isopropyl lithium alkoxide, sodium methoxide, caustic alcohol, sodium propoxide, sodium isopropylate, potassium methoxide, potassium ethoxide, potassium propoxide, potassium isopropoxide, first
At least one of alcohol calcium, calcium ethoxide, calcium propoxide, calcium isopropoxide.
8. the preparation method of oil base drilling fluid heat resisting fluid loss reducing agent as claimed in claim 1, it is characterised in that：
The reaction of the first step is carried out under return stirring；The reaction of the second step is carried out under agitation.
9. the preparation method of oil base drilling fluid heat resisting fluid loss reducing agent as claimed in claim 1, it is characterised in that the corruption
Phytic acid resin is prepared from by the preparation method comprised the following steps：
1) 200~300 parts of humates are first added in 600 parts by weight water, stirring is completely dissolved it；
2) 20~60 parts of Bronsted acids are added, reaction is stirred at room temperature；Product is filtered after reacting, cleaning；
3) by product drying, the crushing after washing.
10. the preparation method of oil base drilling fluid heat resisting fluid loss reducing agent as claimed in claim 9, it is characterised in that：
The humate is selected from least one of humic acid potassium, sodium humate；
The Bronsted acid is selected from least one of hydrochloric acid, sulfuric acid, nitric acid and phosphoric acid.
11. the preparation method of oil base drilling fluid heat resisting fluid loss reducing agent as claimed in claim 1, it is characterised in that：
The low-boiling point alcohol is at least one of methanol, ethanol, propyl alcohol and isopropanol.
12. the preparation method of oil base drilling fluid heat resisting fluid loss reducing agent as claimed in claim 1, it is characterised in that described
Organic amine is selected from least one of material that following three kinds of formulas are represented：
(1)R1-NH2, wherein R1Selected from saturated carbon chains of the carbon atom number in the range of 6~30, unsaturated carbon chains, cycloalkyl or
Person's aryl；
(2)R1-HN-R2, wherein R1Selected from saturated carbon chains of the carbon atom number in the range of 6~30, unsaturated carbon chains, cycloalkyl
Or aryl, R2Saturated carbon chains, unsaturated carbon chains, cycloalkyl or aromatic hydrocarbons selected from carbon atom number in the range of 1~30
Base；
(3)H2N-R1-(NH-CnH2n)m-NH2, wherein R1Selected from saturated carbon chains of the carbon atom number in the range of 1~20, unsaturation
Carbochain, cycloalkyl or aryl, n are that 1~6, m is 0~20.
13. the preparation method of oil base drilling fluid heat resisting fluid loss reducing agent as claimed in claim 12, it is characterised in that：It is described
R1-NH2Middle R1Carbon atom number be 8~16.
14. the preparation method of oil base drilling fluid heat resisting fluid loss reducing agent as claimed in claim 12, it is characterised in that：It is described
R1-HN-R2Middle R1Carbon atom number be 8~16.
15. the preparation method of oil base drilling fluid heat resisting fluid loss reducing agent as claimed in claim 12, it is characterised in that：It is described
R1-HN-R2Middle R2Carbon atom number be 1~8.
16. the preparation method of oil base drilling fluid heat resisting fluid loss reducing agent as claimed in claim 12, it is characterised in that：It is described
H2N-R1-(NH-CnH2n)m-NH2Middle R1Carbon atom number be 2~12.
17. the preparation method of oil base drilling fluid heat resisting fluid loss reducing agent as claimed in claim 12, it is characterised in that described
Organic amine is selected from least one of following material：N-hexylamine, n-octyl amine, positive two cetylamine, 12- amido laurylenes, cyclohexylamine,
Open-chain crown ether, to hexadecylaniline, n-hexyl methyl amine, double-n-octyl amine, double-dodecyl amine, 1- laurylenes Ji Jia
Base amine, cyclohexylethylamine, ethylphenyl amine, methanediamine, ethylenediamine, 1,3- propane diamine, 1,6- hexamethylene diamines, 1,4- hexamethylenes two
Amine, 1,18- octadecyl diamines, 1,30- melissyl diamines, diethylenetriamine, triethylene tetramine, TEPA, five second
Alkene hexamine.
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| CN105733526A (en) * | 2016-04-19 | 2016-07-06 | 潍坊天福化学科技有限公司 | Drilling fluid filtrate reducer and preparation method thereof |
| CN106566494B (en) * | 2016-11-07 | 2020-02-04 | 天津天诚拓源科技发展有限公司 | High-temperature-resistant fluid loss additive for oil-based drilling fluid and preparation method thereof |
| CN106833554A (en) * | 2017-01-24 | 2017-06-13 | 福州大学 | Filtrate reducer for drilling fluid prepared by a kind of utilization percolate and preparation method thereof |
| CN106867483B (en) * | 2017-04-01 | 2019-05-17 | 新疆华油能源工程服务有限公司 | A kind of environment-friendly oil-based filtrate reducer for drilling fluid resistant to high temperatures |
| CN111139043B (en) * | 2018-11-06 | 2022-05-03 | 中国石油化工股份有限公司 | Plugging anti-collapse treating agent for shale stratum and preparation method thereof |
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