CN105623625A - Oil-based drilling fluid extracting and cutting agent and preparation method thereof - Google Patents
Oil-based drilling fluid extracting and cutting agent and preparation method thereof Download PDFInfo
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- CN105623625A CN105623625A CN201410692203.1A CN201410692203A CN105623625A CN 105623625 A CN105623625 A CN 105623625A CN 201410692203 A CN201410692203 A CN 201410692203A CN 105623625 A CN105623625 A CN 105623625A
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Abstract
The invention provides an oil-based drilling fluid extracting and cutting agent and a preparation method thereof. The method comprises the following steps: maleic anhydride and styrene are subjected to a polymerization reaction under existence of a solvent and an initiator to obtain a mixture; the obtained mixture is subjected to a reaction under existence of an alcohols compound and a catalyst to obtain an extracting and cutting agent crude product; and the obtained extracting and cutting agent crude product is subjected to removal of an organic solvent, and then is dried and crushed to obtain the oil-based drilling fluid extracting and cutting agent. The oil-based drilling fluid extracting and cutting agent has a long straight chain alkyl group and contains a lot of polar groups, net structures are formed by the long chain alkyl group in an oil-based drilling fluid through association action, the polar groups in molecules are capable of interacting with other groups through electrostatic attraction or hydrogen bond, so that the net structure with larger specific surface area is formed, and the existence of the net structures effectively increases the dynamic cutting force of the drilling fluid.
Description
Technical field
The present invention relates to drilling technology field, specifically, relate to a kind of oil base drilling fluid extracting and cutting agent and preparation method thereof.
Background technology
Early stage organoclay is widely used as oil base drilling fluid extracting and cutting agent, but organoclay easy De contamination after high temperature, reduce the dissolution rate in oil, reduce oil base drilling fluid service life, and be unfavorable for the protection of low permeability reservoir. Therefore, domestic and international many scholars have carried out useful exploration and research, have developed multiple oil base drilling fluid extracting and cutting agent.
1988, ArvindDPatel added the copolymer of butadiene-styrene rubber base polymer and amide or amine monomers in conventional oil base drilling fluid, improves the yield value of system. 1998, MurrayCooperman alkoxylated fats amine have developed Powdered extracting and cutting agent with anhydride or acid reaction. 1998, MahalingamSanthanam synthesized a kind of liquid extracting and cutting agent with polyhydric alcohol, amino alcohol or diamidogen and polybasic carboxylic acid or isocyanate reaction. 2011, JeffreyJ.Miller selected the ester containing hydrophobic group as extracting and cutting agent, and this polarity ester has heat stability and good lubricity, can be used for preparing low solid phase oil base drilling fluid, is effectively improved drilling speed and reduces formation damage.
China University Of Petroleum Beijing have developed extracting and cutting agent SDMOD, compare the impact of propylene carbonate under different temperatures (PC), PETO and the SDMOD viscosity on full oil/synthesis base base slurry, water-in-oil based water slurry and Water-In-Oil drilling fluid system and shear force, result shows, higher relative molecular mass, the extracting and cutting agent with various polarity group form Weak Gels by hydrogen bond, the viscosity under low shear rate can be improved, improve thixotropy and the elastic modelling quantity of Water-In-Oil drilling fluid, thus Effective Suspension barite and cleaning well. Petroleum works Institute for Research and Technology of Henan Oil Field branch company and Han Ke Institute for New Technologies of Jingzhou City pass through a kind of Tackifier materials of research design, improve its large rock-carrying ability by improving the rheological characteristic of oil base drilling fluid.
The present invention is by synthesizing the organic high molecular compound containing a large amount of hydroxy-acid group isopolarity groups, these polar groups form space net structure by electrostatic force, and tridimensional network can also be formed by association between the long alkyl straight-chain in molecule, thus realize putting forward the purpose cut.
Summary of the invention
The preparation method that it is an object of the present invention to provide a kind of oil base drilling fluid extracting and cutting agent;
Another object of the present invention is to the oil base drilling fluid extracting and cutting agent providing described preparation method to prepare.
For reaching above-mentioned purpose, on the one hand, the preparation method that the invention provides a kind of oil base drilling fluid extracting and cutting agent, described method comprises the steps:
(1) maleic anhydride and styrene carry out polyreaction under the existence of solvent and initiator and obtain mixture;
(2) mixture that step (1) obtains is obtained by reacting extracting and cutting agent crude product under alcohol compound and catalyst exist;
(3) extracting and cutting agent crude product step (2) obtained is pulverized after removing organic solvent and unreacted reactant, drying, obtains described oil base drilling fluid extracting and cutting agent; Wherein dry at 120 DEG C.
According to preparation method of the present invention, in preferred steps of the present invention (1), maleic anhydride and cinnamic mol ratio are (0.5-2.5): 1;
According to preparation method of the present invention, in preferred steps of the present invention (1), the mass ratio of maleic anhydride and styrene total amount and initiator is 100:(0.5-2); .
According to preparation method of the present invention, in preferred steps of the present invention (1), maleic anhydride and solvent quality are than for 1:(5-15);
According to preparation method of the present invention, initiator described in preferred steps of the present invention (1) is peroxide initiator;
One or more the combination being wherein more preferably selected from Ammonium persulfate., sodium peroxydisulfate, potassium peroxydisulfate, azodiisobutyronitrile and dibenzoyl peroxide.
According to preparation method of the present invention, solvent described in preferred steps of the present invention (1) is cycloalkane or aromatic hydrocarbon solvent; Wherein it is preferably hexamethylene or toluene; Wherein it is more preferably toluene.
According to preparation method of the present invention, the polyreaction of preferred steps of the present invention (1) is reaction 2-3 hour.
According to preparation method of the present invention, preferred steps of the present invention (1) is maleic anhydride, styrene to be added in solvent, is heated to 70-110 DEG C, adds initiator and carry out polyreaction.
According to preparation method of the present invention, preferred steps of the present invention (1) is carry out polyreaction in the presence of nitrogen after adding initiator.
According to preparation method of the present invention, alcohol compound described in preferred steps of the present invention (2) and maleic anhydride mol ratio are 1:(1-2.5).
According to preparation method of the present invention, in preferred steps of the present invention (2), catalyst quality consumption is maleic anhydride and the 0.5%-1% of alcohol compound gross mass.
According to preparation method of the present invention, alcohol compound described in preferred steps of the present invention (2) is multicomponent alcoholics compound; Wherein it is more preferably Polyethylene Glycol, octadecanol or glycerol;
According to preparation method of the present invention, the present invention can also it is preferred that in step (2) when solvent is glycerol, the ratio of the amount of substance of maleic anhydride and glycerol be 1.5:1;
When solvent is Polyethylene Glycol, the amount of substance of maleic anhydride and Polyethylene Glycol is than for 2.5:1;
When solvent is octadecanol, the ratio of maleic anhydride and octadecanol amount of substance is 1:1.
According to preparation method of the present invention, the present invention is it is also preferred that catalyst described in step (2) is organic acid; Wherein it is more preferably p-methyl benzenesulfonic acid;
According to preparation method of the present invention, the present invention is it is also preferred that when catalyst described in step (2) is p-methyl benzenesulfonic acid, catalyst quality consumption is the 0.75% of maleic anhydride and alcohol compound gross mass.
According to preparation method of the present invention, reaction described in preferred steps of the present invention (2) is reaction 3-4 hour.
On the other hand, present invention also offers the oil base drilling fluid extracting and cutting agent that above any described preparation method prepares.
In sum, the invention provides a kind of oil base drilling fluid extracting and cutting agent and preparation method thereof. The extracting and cutting agent of the present invention has the advantage that
(1) the oil base drilling fluid extracting and cutting agent synthesized by the present invention had both had long linear alkyl and containing substantial amounts of polarity group, chain alkyl forms network structure by association in oil base drilling fluid, and the polarity group in molecule is by electrostatic attraction or hydrogen bond and other Interaction of substituents, forming the network structure that specific surface area is big, these cancellated existence effectively raise the yield value of drilling fluid.
(2) the oil base drilling fluid extracting and cutting agent synthesized is comb-shaped polymer or network cross linked polymers, improves the temperature resistance stability of oil base drilling fluid.
(3) reaction produces water and toluene are removed at 80 DEG C of generation azeotropic, it is not necessary to individually add azeotropic agent, thus saving cost.
Detailed description of the invention
The beneficial effect of the implementation process of the present invention and generation is described in detail, it is intended to help reader to be more fully understood that essence and the feature of the present invention, not as can the restriction of practical range to this case below by way of specific embodiment.
The chemical reagent that the invention process example is used comes from Chemical Reagent Co., Ltd., Sinopharm Group and Beijing Chemical Plant.
Embodiment 1
Step 1
First 9.8g maleic anhydride, 20.83g styrene being added in 49g toluene, be then added in reactor, be heated to 80 DEG C, add 0.1532g azodiisobutyronitrile, under nitrogen protection reaction 3 hours in solution, polyreaction prepares mixture T.
Step 2
Under agitation, 9.209g glycerol and 0.19g p-methyl benzenesulfonic acid are joined in mixture T, continue 4 hours prepared oil base drilling fluid extracting and cutting agent crude product TQ of stirring reaction.
Step 3
Extracting and cutting agent crude product TQ sucking filtration is removed toluene, then dries to constant weight at 120 DEG C in constant temperature blast drying oven. Oil base drilling fluid extracting and cutting agent is obtained after mechanical activation comminution.
Embodiment 2
Step 1
First 9.8g maleic anhydride, 4.166g styrene being added in 147g toluene, be then added in reactor, be heated to 105 DEG C, add 0.2793g azodiisobutyronitrile, under nitrogen protection reaction 3 hours in solution, polyreaction prepares mixture T.
Step 2
Under agitation, 80g Macrogol 2000 and 0.449g p-methyl benzenesulfonic acid are joined in mixture T, continue 4 hours prepared oil base drilling fluid extracting and cutting agent crude product TQ of stirring reaction.
Step 3
With embodiment 1 step 3. Oil base drilling fluid extracting and cutting agent is obtained after drying the solid product mechanical activation comminution prepared.
Embodiment 3
Step 1
First 9.8g maleic anhydride, 10.415g styrene being added in 98g toluene, be then added in reactor, be heated to 80 DEG C, add 0.2022g azodiisobutyronitrile, under nitrogen protection reaction 3 hours in solution, polyreaction prepares mixture T.
Step 2
Under agitation, 6.1333g glycerol and 0.1194g p-methyl benzenesulfonic acid are joined in mixture T, continue 4 hours prepared oil base drilling fluid extracting and cutting agent crude product TQ of stirring reaction.
Step 3
With embodiment 1 step 3. Namely oil base drilling fluid extracting and cutting agent is obtained after drying the solid product mechanical activation comminution prepared.
Embodiment 4
Step 1
With embodiment 1 step 1.
Step 2
Under agitation, 100g Macrogol 2000 and 0.8235g p-methyl benzenesulfonic acid are joined in mixture T, continue 4 hours prepared oil base drilling fluid extracting and cutting agent crude product TQ of stirring reaction.
Step 3
With embodiment 1 step 3. Namely oil base drilling fluid extracting and cutting agent is obtained after drying the solid product mechanical activation comminution prepared.
Embodiment 5
Step 1
With embodiment 1 step 1.
Step 2
Under agitation, 27.05g octadecanol and 0.276g p-methyl benzenesulfonic acid are joined in mixture T, continue 4 hours prepared oil base drilling fluid extracting and cutting agent crude product TQ of stirring reaction.
Step 3
With embodiment 1 step 3.
Step 4, namely obtains oil base drilling fluid extracting and cutting agent after drying the solid product mechanical activation comminution prepared.
Embodiment 6
Step 1
With embodiment 1 step 1.
Step 2
Under agitation, 15g octadecanol and 0.186g p-methyl benzenesulfonic acid are joined in mixture T, continue 4 hours prepared oil base drilling fluid extracting and cutting agent crude product TQ of stirring reaction.
Step 3
With embodiment 1 step 3. Namely oil base drilling fluid extracting and cutting agent is obtained after drying the solid product mechanical activation comminution prepared.
Embodiment 7
Step 1
First 9.8g maleic anhydride, 10.415g styrene being added in 100ml toluene, be then added in reactor, be heated to 100 DEG C, add 0.1011g dibenzoyl peroxide, under nitrogen protection reaction 3 hours in solution, polyreaction prepares mixture T.
Step 2
Under agitation, 15g octadecanol and 0.186g p-methyl benzenesulfonic acid are joined in mixture T, continue 4 hours prepared oil base drilling fluid extracting and cutting agent crude product TQ of stirring reaction.
Step 3
With embodiment 1 step 3. Namely oil base drilling fluid extracting and cutting agent is obtained after drying the solid product mechanical activation comminution prepared.
The extracting and cutting agent for the drilling fluid as follows embodiment of the present invention 1��6 provided carries out performance test:
1, test object:
Blank sample: the basic recipe of oil base drilling fluid is as follows: 360mL diesel oil+main breast (4%)+auxiliary breast (4%)+organoclay (2%)+fluid loss additive (4%)+calcium oxide (3%)+40mL calcium chloride water (20%)+barite (400g), and wherein bentonitic mass fraction is 4%;
Test specimens 1��6: adding the drilling fluid extracting and cutting agent provided by the embodiment of the present invention 1��6 in test specimens 1��6 respectively above-mentioned drilling fluid respectively, the quality of described extracting and cutting agent is the 2% of described drilling fluid quality.
2, method of testing:
Rheological property measures:
Will test object high-speed stirred after 20 minutes, seal and within 24 hours, carry out maintenance, high-speed stirred 10 minutes again after maintenance, survey its rheological property.
Then test object loads in ageing can heat at 150 DEG C roll 16 hours, be cooled to room temperature, move into agitator tank high speed and stir 5 minutes, survey its rheological property, measuring according to the method for regulation in GB GB/T16783.1-2006, and contrast with abroad, determination data is referring to table 1.
Object rheological property tables of data respectively tested by table 1
Claims (10)
1. the preparation method of an oil base drilling fluid extracting and cutting agent, it is characterised in that described method comprises the steps:
(1) maleic anhydride and styrene carry out polyreaction under the existence of solvent and initiator and obtain mixture; Preferred maleic anhydride and solvent quality are than for 1:(5-15); It is also preferred that initiator is peroxide initiator, wherein it is more preferably selected from one or more the combination in Ammonium persulfate., sodium peroxydisulfate, potassium peroxydisulfate, dibenzoyl peroxide or organic azodiisobutyronitrile; It is also preferred that solvent is cycloalkane or aromatic hydrocarbon solvent, wherein it is more preferably hexamethylene etc. or toluene;
(2) mixture that step (1) obtains is obtained by reacting extracting and cutting agent crude product under alcohol compound and catalyst exist; Preferred described alcohol compound is multicomponent alcoholics compound, is wherein more preferably glycerol, Polyethylene Glycol or octadecanol; It is also preferred that catalyst is organic acid, wherein it is more preferably p-methyl benzenesulfonic acid;
(3) extracting and cutting agent crude product step (2) obtained is pulverized after removing organic solvent and unreacted reactant, drying, obtains described oil base drilling fluid extracting and cutting agent; Wherein dry at 120 DEG C.
2. preparation method according to claim 1, it is characterised in that in step (1), maleic anhydride and cinnamic mol ratio are (0.5-2.5): 1.
3. preparation method according to claim 1, it is characterised in that in step (1), the mass ratio of maleic anhydride and styrene total amount and initiator is 100:(0.5-2).
4. preparation method according to claim 1, it is characterised in that the polyreaction of step (1) is reaction 2-3 hour.
5. preparation method according to claim 1, it is characterised in that step (1) is maleic anhydride, styrene to be added in solvent, is heated to 70-110 DEG C, adds initiator and carry out polyreaction.
6. preparation method according to claim 1, it is characterised in that step (1) is carry out polyreaction under nitrogen protection after adding initiator.
7. preparation method according to claim 1, it is characterised in that alcohol compound described in step (2) and maleic anhydride mol ratio are 1:(1-2.5).
8. preparation method according to claim 1, it is characterised in that in step (2), catalyst quality consumption is maleic anhydride and the 0.5%-1% of alcohol compound gross mass.
9. preparation method according to claim 1, it is characterised in that reaction described in step (2) is reaction 3-4 hour.
10. the oil base drilling fluid extracting and cutting agent that preparation method described in claim 1��9 any one prepares, it is preferable that this extracting and cutting agent number-average molecular weight described is 3000-5000, more preferably described extracting and cutting agent is a kind of macromole comb-shaped polymer.
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Cited By (4)
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| CN107805286A (en) * | 2016-09-09 | 2018-03-16 | 中石化石油工程技术服务有限公司 | A kind of extracting and cutting agent and preparation method thereof and oil base drilling fluid |
| CN108003851A (en) * | 2018-01-12 | 2018-05-08 | 中国海洋石油集团有限公司 | A kind of drilling fluid extracting and cutting agent and preparation method thereof |
| CN111574674A (en) * | 2020-03-31 | 2020-08-25 | 北京中科日升科技有限公司 | Flow pattern regulator for oil-based drilling fluid and preparation method thereof |
| CN116693408A (en) * | 2023-08-07 | 2023-09-05 | 中海油田服务股份有限公司 | Epoxidized soybean oil modified tackifying and cutting agent as well as preparation method and application thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107805286A (en) * | 2016-09-09 | 2018-03-16 | 中石化石油工程技术服务有限公司 | A kind of extracting and cutting agent and preparation method thereof and oil base drilling fluid |
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| CN116693408A (en) * | 2023-08-07 | 2023-09-05 | 中海油田服务股份有限公司 | Epoxidized soybean oil modified tackifying and cutting agent as well as preparation method and application thereof |
| CN116693408B (en) * | 2023-08-07 | 2023-10-24 | 中海油田服务股份有限公司 | Epoxidized soybean oil modified tackifying and cutting agent as well as preparation method and application thereof |
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