CN101845295B - Drilling fluid tackifier favorable for protecting oil-gas layers - Google Patents
Drilling fluid tackifier favorable for protecting oil-gas layers Download PDFInfo
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- CN101845295B CN101845295B CN 201010184837 CN201010184837A CN101845295B CN 101845295 B CN101845295 B CN 101845295B CN 201010184837 CN201010184837 CN 201010184837 CN 201010184837 A CN201010184837 A CN 201010184837A CN 101845295 B CN101845295 B CN 101845295B
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- 238000005553 drilling Methods 0.000 title claims abstract description 52
- 239000012530 fluid Substances 0.000 title claims abstract description 44
- 230000002349 favourable effect Effects 0.000 title abstract 2
- 239000000178 monomer Substances 0.000 claims abstract description 23
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 11
- 230000002209 hydrophobic effect Effects 0.000 claims abstract description 10
- 239000000243 solution Substances 0.000 claims abstract description 10
- 125000000391 vinyl group Chemical group [H]C([*])=C([H])[H] 0.000 claims abstract description 9
- 229920002554 vinyl polymer Polymers 0.000 claims abstract description 9
- 229920000642 polymer Polymers 0.000 claims abstract description 7
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims description 33
- 229910052757 nitrogen Inorganic materials 0.000 claims description 25
- 229920006029 tetra-polymer Polymers 0.000 claims description 17
- 239000004215 Carbon black (E152) Substances 0.000 claims description 11
- 229930195733 hydrocarbon Natural products 0.000 claims description 11
- 150000002430 hydrocarbons Chemical class 0.000 claims description 11
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 8
- 238000003756 stirring Methods 0.000 claims description 8
- SNRUBQQJIBEYMU-UHFFFAOYSA-N Dodecane Natural products CCCCCCCCCCCC SNRUBQQJIBEYMU-UHFFFAOYSA-N 0.000 claims description 6
- VZCYOOQTPOCHFL-OWOJBTEDSA-N Fumaric acid Chemical compound OC(=O)\C=C\C(O)=O VZCYOOQTPOCHFL-OWOJBTEDSA-N 0.000 claims description 6
- LVHBHZANLOWSRM-UHFFFAOYSA-N itaconic acid Chemical compound OC(=O)CC(=C)C(O)=O LVHBHZANLOWSRM-UHFFFAOYSA-N 0.000 claims description 6
- DZSVIVLGBJKQAP-UHFFFAOYSA-N 1-(2-methyl-5-propan-2-ylcyclohex-2-en-1-yl)propan-1-one Chemical compound CCC(=O)C1CC(C(C)C)CC=C1C DZSVIVLGBJKQAP-UHFFFAOYSA-N 0.000 claims description 5
- JHUFGBSGINLPOW-UHFFFAOYSA-N 3-chloro-4-(trifluoromethoxy)benzoyl cyanide Chemical compound FC(F)(F)OC1=CC=C(C(=O)C#N)C=C1Cl JHUFGBSGINLPOW-UHFFFAOYSA-N 0.000 claims description 5
- HRPVXLWXLXDGHG-UHFFFAOYSA-N Acrylamide Chemical compound NC(=O)C=C HRPVXLWXLXDGHG-UHFFFAOYSA-N 0.000 claims description 5
- NIXOWILDQLNWCW-UHFFFAOYSA-N Acrylic acid Chemical compound OC(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 claims description 5
- XSEKDPDUVUFJBL-UHFFFAOYSA-N azane propane Chemical class N.N.CCC XSEKDPDUVUFJBL-UHFFFAOYSA-N 0.000 claims description 5
- XQPVIMDDIXCFFS-UHFFFAOYSA-N n-dodecylprop-2-enamide Chemical compound CCCCCCCCCCCCNC(=O)C=C XQPVIMDDIXCFFS-UHFFFAOYSA-N 0.000 claims description 5
- XFTALRAZSCGSKN-UHFFFAOYSA-M sodium;4-ethenylbenzenesulfonate Chemical compound [Na+].[O-]S(=O)(=O)C1=CC=C(C=C)C=C1 XFTALRAZSCGSKN-UHFFFAOYSA-M 0.000 claims description 5
- 239000004159 Potassium persulphate Substances 0.000 claims description 4
- 239000008367 deionised water Substances 0.000 claims description 4
- 229910021641 deionized water Inorganic materials 0.000 claims description 4
- 239000003999 initiator Substances 0.000 claims description 4
- 239000011259 mixed solution Substances 0.000 claims description 4
- USHAGKDGDHPEEY-UHFFFAOYSA-L potassium persulfate Chemical compound [K+].[K+].[O-]S(=O)(=O)OOS([O-])(=O)=O USHAGKDGDHPEEY-UHFFFAOYSA-L 0.000 claims description 4
- 235000019394 potassium persulphate Nutrition 0.000 claims description 4
- 238000010298 pulverizing process Methods 0.000 claims description 4
- GEHJYWRUCIMESM-UHFFFAOYSA-L sodium sulfite Chemical compound [Na+].[Na+].[O-]S([O-])=O GEHJYWRUCIMESM-UHFFFAOYSA-L 0.000 claims description 4
- MPLIJWMZXSTSDQ-UHFFFAOYSA-N 2-(prop-2-enoylamino)dodecane-1-sulfonic acid Chemical compound CCCCCCCCCCC(CS(O)(=O)=O)NC(=O)C=C MPLIJWMZXSTSDQ-UHFFFAOYSA-N 0.000 claims description 3
- 239000001530 fumaric acid Substances 0.000 claims description 3
- BKWMQCLROIZNLX-UHFFFAOYSA-N n-hexadecylprop-2-enamide Chemical compound CCCCCCCCCCCCCCCCNC(=O)C=C BKWMQCLROIZNLX-UHFFFAOYSA-N 0.000 claims description 3
- 239000002994 raw material Substances 0.000 claims description 3
- VZCYOOQTPOCHFL-UHFFFAOYSA-N trans-butenedioic acid Natural products OC(=O)C=CC(O)=O VZCYOOQTPOCHFL-UHFFFAOYSA-N 0.000 claims description 3
- 238000002360 preparation method Methods 0.000 claims description 2
- 239000000126 substance Substances 0.000 abstract description 5
- 239000003129 oil well Substances 0.000 abstract description 4
- 239000007864 aqueous solution Substances 0.000 abstract description 3
- 229920003169 water-soluble polymer Polymers 0.000 abstract description 3
- 239000000654 additive Substances 0.000 abstract description 2
- 238000013329 compounding Methods 0.000 abstract 1
- 125000001165 hydrophobic group Chemical group 0.000 abstract 1
- 239000000693 micelle Substances 0.000 abstract 1
- -1 amine salt Chemical class 0.000 description 9
- 239000003292 glue Substances 0.000 description 6
- 239000007788 liquid Substances 0.000 description 6
- 238000011156 evaluation Methods 0.000 description 5
- 238000006243 chemical reaction Methods 0.000 description 4
- 239000011435 rock Substances 0.000 description 4
- 239000013535 sea water Substances 0.000 description 4
- 239000003795 chemical substances by application Substances 0.000 description 3
- 238000002474 experimental method Methods 0.000 description 3
- 239000007789 gas Substances 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- ZRALSGWEFCBTJO-UHFFFAOYSA-N Guanidine Chemical compound NC(N)=N ZRALSGWEFCBTJO-UHFFFAOYSA-N 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 238000004140 cleaning Methods 0.000 description 2
- 239000002131 composite material Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000035699 permeability Effects 0.000 description 2
- 238000005096 rolling process Methods 0.000 description 2
- 229920002134 Carboxymethyl cellulose Polymers 0.000 description 1
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 1
- 241000361919 Metaphire sieboldi Species 0.000 description 1
- CHJJGSNFBQVOTG-UHFFFAOYSA-N N-methyl-guanidine Natural products CNC(N)=N CHJJGSNFBQVOTG-UHFFFAOYSA-N 0.000 description 1
- 239000008186 active pharmaceutical agent Substances 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 239000001768 carboxy methyl cellulose Substances 0.000 description 1
- 235000010948 carboxy methyl cellulose Nutrition 0.000 description 1
- 239000008112 carboxymethyl-cellulose Substances 0.000 description 1
- 239000004927 clay Substances 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 230000018044 dehydration Effects 0.000 description 1
- 238000006297 dehydration reaction Methods 0.000 description 1
- SWSQBOPZIKWTGO-UHFFFAOYSA-N dimethylaminoamidine Natural products CN(C)C(N)=N SWSQBOPZIKWTGO-UHFFFAOYSA-N 0.000 description 1
- 238000009472 formulation Methods 0.000 description 1
- 229920006158 high molecular weight polymer Polymers 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 229920002401 polyacrylamide Polymers 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
Landscapes
- Addition Polymer Or Copolymer, Post-Treatments, Or Chemical Modifications (AREA)
Abstract
The invention relates to a drilling fluid tackifier favorable for protecting oil-gas layers, which belongs to the technical field of oil-field drilling-fluid additives. The tackifier is obtained by mixing and preparing 5 to 95 parts of quadripolymer and 95 to 5 parts of bis-quaternary ammonium salt, wherein the quadripolymer is obtained by compounding three types of vinyl monomer and one type of hydrophobic monomer. The drilling fluid tackifier is a low molecular weight polymer and forms earthworm-shaped or long round rod-shaped micellar solution in aqueous solution through molecular association; when micelle concentration exceeds a critical value, space grid structure is formed among molecules and has strong suspending capability; gel can automatically break when meeting oil-gas, so the pollution of drilling fluid to oil layers can be removed without chemical gel breakers. The tackifier solves the problem that the prior water-soluble polymer tackifier for drilling fluid cannot thoroughly break gel. Compared with conventional drilling fluid tackifiers, the tackifier of the invention also contains long-carbon-chain hydrophobic groups besides hydrophilic groups, and can reduce the surface tension of drilling fluid, effectively prevent water locking and increase the productivity of oil wells.
Description
Technical field:
The present invention relates to a kind of drilling fluid tackifier that is conducive to protect hydrocarbon zone, belong to oil field drilling fluids additive technology field.
Background technology:
Conventional water-base drilling fluid adopts water-soluble polymer usually at present, and is formulated as tackifier such as hydro-polyacrylamide, carboxymethyl cellulose, modification guanidine glue etc.There is the problem that can not thoroughly break glue in these water-base drilling fluids in the completion later stage, in a single day polymer is squeezed into the stratum and very easily is adsorbed, is trapped in the hole, causes oily stream to be obstructed, and cause oil well productivity to descend.For this problem, at present conventional solution is to adopt chemical gel breaker thoroughly break glue, is in a single day adsorbed, is trapped in the hole by the stratum to prevent the water-soluble polymer in the water base drilling fluid, causes the be obstructed generation of situation of oily stream.But its drawback of this solution is that chemical gel breaker is generally oxygenant, all has unsafe factor in transportation and the use procedure, can't satisfy the requirement of engineering of drilling safety operation.
Summary of the invention:
The object of the invention is to: provide a kind of by tetrapolymer with diquaternary amine salt is composite forms; in the aqueous solution, form micellar solution; when micellar concentration surpasses threshold value; intermolecular formation space grid structure; thereby soltion viscosity is increased considerably, and have stronger suspending power, run into oil gas and can automatically break glue; protect to greatest extent hydrocarbon zone, improve oil well productivity.Thoroughly solve the drilling fluid tackifier that is conducive to protect hydrocarbon zone that existing drilling liquid water soluble macromolecular tackifier can not thoroughly break the glue problem.
The present invention realizes above-mentioned purpose by following technical solution:
A kind of drilling fluid tackifier that is conducive to protect hydrocarbon zone is characterized in that: it is made of the component of following weight part:
5～95 parts of tetrapolymers
95～5 parts of diquaternary amine salt;
Described tetrapolymer is polymerized by three kinds of vinyl monomers and a kind of hydrophobic monomer, and the quality proportioning of three kinds of vinyl monomers and a kind of hydrophobic monomer is: 20～30: 30～20: 47～45: 3～5;
Described three kinds of vinyl monomers are any three kinds in acrylamide, vinylformic acid, 2-acrylamide-2-methylpro panesulfonic acid, sodium p styrene sulfonate, N,N-DMAA, sodium allylsulfonate, methylene-succinic acid, the fumaric acid;
Described hydrophobic monomer is any one in 2-acrylamido dodecane sulfonic acid, N-dodecyl acrylamide, N-hexadecyl acrylamide, the single toxilic acid hexadecyl of N-acid amides, the single toxilic acid octadecyl of the N-acid amides;
Described diquaternary amine salt is: N, N '-two (tetradecyl dimethyl)-1,3-dibrominated propane-diammonium salt, N, N '-two (hexadecyldimethyl benzyl ammonium)-1,2-dibrominated second di-ammonium salts, N, N '-two (dodecyl dimethyl)-1,2-dibrominated second di-ammonium salts, N, N '-two (dodecyl dimethyl)-1,3-dibrominated propane-diammonium salt, N, N '-two (hexadecyldimethyl benzyl ammonium)-1, any one in the 3-dibrominated propane-diammonium salt.
Above-mentioned be conducive to protect the preparation method of the drilling fluid tackifier of hydrocarbon zone to be:
(1), produce tetrapolymer:
Getting 300 ml deionized water pours in the clean wide-necked bottle, add 5 gram sodium hydroxide, stirring is dissolved sodium hydroxide fully, then be 20～30: 30～20 according to mass ratio successively: 47～45: 3～5 proportioning is got acrylamide, vinylformic acid, the 2-acrylamide-2-methylpro panesulfonic acid, sodium p styrene sulfonate, N, the N-DMAA, sodium allylsulfonate, methylene-succinic acid, any three kinds of raw materials and 2-acrylamido dodecane sulfonic acid in the fumaric acid, N-dodecyl acrylamide, N-hexadecyl acrylamide, the single toxilic acid hexadecyl of N-acid amides, any one raw material in the single toxilic acid octadecyl of the N-acid amides, making four kinds of total quality of monomer is 100 grams, join in the wide-necked bottle, stir, four kinds of monomers are dissolved fully till.Regulate the pH value of mixed solution 4～6 with 10% sodium hydroxide solution again, logical nitrogen is after 30 minutes at ambient temperature, Potassium Persulphate and 0.2～0.4 gram S-WAT with 0.4～0.8 gram carry out polyreaction as initiator, after the question response time reaches 6 hours, polyreaction is finished, generate low-molecular weight polymer, then spray-dried, pulverize, cross 40 mesh sieves and namely get tetrapolymer, for subsequent use;
(2), produce drilling fluid tackifier:
Tetrapolymer is mixed by said ratio and diquaternary amine salt, cross 40 mesh sieves after pulverizing, be drilling fluid tackifier product of the present invention.
The present invention's beneficial effect compared with prior art is:
1, this product is low-molecular weight polymer by the polymkeric substance of extraordinary vinyl monomer with diquaternary amine salt is composite forms, and forms micellar solution by molecular association in the aqueous solution, plays tackify and proposes the effect of cutting, and its micella mainly is earthworm shape or oval bar-shaped; Because the hydrophobic association effect, when micellar concentration surpasses threshold value, intermolecular formation space grid structure, thus soltion viscosity is increased considerably and have certain elasticity and stronger suspending power, satisfying the requirement of engineering of drilling operation,
2, running into oil gas when going into operation can break glue automatically, does not need chemical gel breaker, just can remove drilling fluid to the pollution of oil reservoir.The clay and the high-molecular weight polymer that adopt this drilling fluid tackifier to substitute in the conventional drilling liquid make up drilling fluid system, are conducive to protect hydrocarbon zone.
3, drilling fluid tackifier of the present invention is compared with conventional drilling liquid tackifier, except containing hydrophilic radical, also contains the hydrophobic grouping of long carbochain, can reduce the surface tension of drilling fluid, and the prevention of water lock improves oil well productivity effectively.
Embodiment:
Below in conjunction with specific embodiment the present invention is further described.
Embodiment 1:
Vinyl monomer is got vinylformic acid, sodium p styrene sulfonate, 2-acrylamide-2-methylpro panesulfonic acid; Hydrophobic monomer is got the single toxilic acid hexadecyl of N-acid amides; Diquaternary amine salt is got N, N '-two (hexadecyldimethyl benzyl ammonium)-1,3-dibrominated propane-diammonium salt.
(1), produce tetrapolymer:
In the reaction vessel of cleaning, add successively an amount of 300 milliliters deionized water, 5 gram sodium hydroxide stir, get successively vinylformic acid 28 grams, sodium p styrene sulfonate 22 grams, 2-acrylamide-2-methylpro panesulfonic acid 47 grams, the single toxilic acid hexadecyl of N-acid amides 3 grams, join in the wide-necked bottle, stir, till monomer is dissolved fully, regulate the pH value of above-mentioned mixed solution 4 with 10% sodium hydroxide solution again, logical nitrogen is after 30 minutes at ambient temperature, carry out polyreaction with 0.4 gram Potassium Persulphate and 0.2 gram S-WAT as initiator, behind the confined reaction 6 hours, generate low-molecular weight polymer, then spray-dried, pulverize, cross 40 mesh sieves and namely get tetrapolymer, for subsequent use;
(2), produce drilling fluid tackifier:
Get 50 parts of weight parts of synthetic tetrapolymer and N, N '-two (hexadecyldimethyl benzyl ammonium)-1,50 parts of weight parts of 3-dibrominated propane-diammonium salt mix, and cross 40 mesh sieves after pulverizing, and namely make drilling fluid tackifier product of the present invention.
Embodiment 2:
Vinyl monomer is got acrylamide, N,N-DMAA, sodium allylsulfonate; Hydrophobic monomer is got N-dodecyl acrylamide; Diquaternary amine salt is got N, N '-two (dodecyl dimethyl)-1,2-dibrominated second di-ammonium salts.
(1), produce tetrapolymer:
In the reaction vessel of cleaning, add successively an amount of 300 deionized water, 5 gram sodium hydroxide stir, get successively acrylamide 23 grams, N, N-DMAA 27 grams, sodium allylsulfonate 46 grams, N-dodecyl acrylamide 4 grams join in the wide-necked bottle, stir, till monomer is dissolved fully, sodium hydroxide solution with 10% is regulated the pH value of mixed solution 5, logical nitrogen is after 30 minutes at ambient temperature, carry out polyreaction with 0.6 gram Potassium Persulphate and 0.3 gram S-WAT as initiator, behind the confined reaction 6 hours, generate low-molecular weight polymer, then spray-dried, pulverize, cross 40 mesh sieves and namely get tetrapolymer, for subsequent use;
(2), produce drilling fluid tackifier:
Get 80 parts of weight parts of synthetic tetrapolymer and N, N '-two (dodecyl dimethyl)-1,20 parts of weight parts of 2-dibrominated second di-ammonium salts mix, and cross 40 mesh sieves after pulverizing, and namely make drilling fluid tackifier product of the present invention.
This is conducive to protect the beneficial effect of the drilling fluid tackifier of hydrocarbon zone for further proof, and the performance of this drilling fluid tackifier has been carried out Lab-evaluation, and its concrete outcome is as follows:
1, the performance evaluation of drilling fluid tackifier:
Lab-evaluation the tackify situations of different dosage tackifier in seawater, experimental result such as table 1:
The tackify characteristic of the different dosage tackifier of table 1 in seawater
| Dosage | AV (mPa·s) | PV (mPa·s) | YP(Pa) | Ф6/Ф3 |
| 0.2％ | 10 | 6 | 4 | 2/1 |
| 0.5％ | 18 | 12 | 6 | 4/3 |
| 0.8％ | 30 | 16 | 14 | 10/9 |
| 1.0％ | 35 | 19 | 16 | 12/11 |
Experimental data shows, tackifier of the present invention all have preferably Efficient Adhesive Promotion in seawater, owing to the intermicellar mutual association of molecule forms network structure, thereby have higher yield value, are conducive to the rock of taking of Multilateral Wells.
2, the water-base drilling fluid fundamental property is estimated:
Take tackifier of the present invention as the core processing agent, the water-base drilling fluid system formulation of structure is as follows:
Seawater+0.15%NaCO
3+ 0.3%NaOH+1.0%～1.5% tackifier+2% fluid loss agent FL+3% polymeric alcohol JLX+3%KCl+5% plugging agent QWY (200 order).
Table 2 water-based drilling liquid system fundamental property
| Experiment condition | AV mPa.s | PV mPa.s | YP Pa | YP/ PV | Ф6/ Ф3 | FL API ml | FL HTHP ml |
| Before rolling | 33 | 14 | 19 | 1.36 | 12/10 | ||
| After rolling | 36 | 17 | 19 | 1.12 | 14/12 | 4.8 | 10 |
Aging condition: 100 ℃ * 16h.
Can find out from above experimental result, the water-base drilling fluid of structure has good rheological and good dehydration building capacity, can satisfy the oil gas drilling requirement.
5, water-base drilling fluid reservoir protection performance evaluation
Assessment process is carried out according to China National Petroleum industry standard SY/T6540-2002 " damage of drilling fluid and completion fluid oil reservoir indoor evaluation method ", and the dynamic filter press of employing High Temperature High Pressure is simulated under the drilling condition and High Temperature High Pressure rock core Flow Meter is estimated the reservoir protection performance of drilling fluid.Table 3 experimental result shows: two core permeability recovery values show that all more than 90% the water-based drilling liquid system that is made up by tackifier of the present invention has preferably reservoir protection performance.
Table 3 water-based drilling liquid system rock core flowing experiment result
| Rock core number | 2984 | 2875 |
| Ko，10 -3μm 2 | 85.8 | 96.4 |
| K 1，10 -3μm 2 | 78.5 | 91.1 |
| Permeability resume figure Krd, % | 91.5 | 94.5 |
Annotate: it is 100 ℃ of temperature, pressure 3.5MPa, time 125min that drilling fluid dynamically pollutes experiment condition.
Claims (2)
1. drilling fluid tackifier that is conducive to protect hydrocarbon zone, it is characterized in that: it is made of the component of following weight part:
5～95 parts of tetrapolymers
95～5 parts of bi-quaternary ammonium salts;
Described tetrapolymer is polymerized by three kinds of vinyl monomers and a kind of hydrophobic monomer, and the mass ratio of three kinds of vinyl monomers and a kind of hydrophobic monomer is 20～30: 30～20: 47～45: 3～5;
Above-mentioned be conducive to protect the preparation method of the drilling fluid tackifier of hydrocarbon zone to be:
(1), produce tetrapolymer:
Getting 300 ml deionized water pours in the clean wide-necked bottle, the sodium hydroxide that adds 5 grams, stirring is dissolved sodium hydroxide fully, then be 20～30: 30～20 according to mass ratio successively: 47～45: 3～5 proportioning is got acrylamide, vinylformic acid, the 2-acrylamide-2-methylpro panesulfonic acid, sodium p styrene sulfonate, N, the N-DMAA, sodium allylsulfonate, methylene-succinic acid, any three kinds of raw materials and 2-acrylamido dodecane sulfonic acid in the fumaric acid, N-dodecyl acrylamide, N-hexadecyl acrylamide, the single toxilic acid hexadecyl of N-acid amides, in the single toxilic acid octadecyl of the N-acid amides any one, making four kinds of total quality of monomer is 100 grams, join in the wide-necked bottle, stir, four kinds of monomers are dissolved fully till; Regulate the pH value of mixed solution 4～6 with 10% sodium hydroxide solution again, logical nitrogen is after 30 minutes at ambient temperature, Potassium Persulphate and 0.2～0.4 gram S-WAT with 0.4～0.8 gram carry out polyreaction as initiator, after the question response time reaches 6 hours, polyreaction is finished, generate low-molecular weight polymer, then spray-dried, pulverize, cross 40 mesh sieves and namely get tetrapolymer, for subsequent use;
(2), produce drilling fluid tackifier:
Tetrapolymer is mixed by said ratio and bi-quaternary ammonium salt, cross 40 mesh sieves after pulverizing, be the drilling fluid tackifier product.
2. the drilling fluid tackifier that is conducive to protect hydrocarbon zone according to claim 1; it is characterized in that: described bi-quaternary ammonium salt is: N; N '-two (tetradecyl dimethyl)-1; 3-dibrominated propane-diammonium salt; N; N '-two (hexadecyldimethyl benzyl ammonium)-1; 2-dibrominated second di-ammonium salts; N; N '-two (dodecyl dimethyl)-1; 2-dibrominated second di-ammonium salts; N; N '-two (dodecyl dimethyl)-1; 3-dibrominated propane-diammonium salt; N, N '-two (hexadecyldimethyl benzyl ammonium)-1, any one in the 3-dibrominated propane-diammonium salt.
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| CN102558425B (en) * | 2010-12-08 | 2014-03-12 | 中国海洋石油总公司 | Tackifier, drilling fluid containing tackifier, and stock solution of drilling fluid |
| CN102516967B (en) * | 2011-12-02 | 2013-08-07 | 中国石油天然气集团公司 | Alkali/surfactant/polymer (ASP) flooding calcium-silicon-barium scale inhibitor and preparation method thereof |
| CN115947887B (en) * | 2021-10-08 | 2024-02-13 | 中国石油化工股份有限公司 | Tackifier for drilling fluid and preparation method and application thereof |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1528853A (en) * | 2003-10-09 | 2004-09-15 | 西南石油学院 | Cation dual surface active agent capable of using displacement agent |
| CN101429425A (en) * | 2007-11-07 | 2009-05-13 | 中国石化集团中原石油勘探局钻井工程技术研究院 | Process for preparing vinyl sulphonate polymer drilling fluid finishing agent |
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1528853A (en) * | 2003-10-09 | 2004-09-15 | 西南石油学院 | Cation dual surface active agent capable of using displacement agent |
| CN101429425A (en) * | 2007-11-07 | 2009-05-13 | 中国石化集团中原石油勘探局钻井工程技术研究院 | Process for preparing vinyl sulphonate polymer drilling fluid finishing agent |
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Effective date of registration: 20210427 Address after: 434000 No. 155 East Jiangjin Road, Hubei, Jingzhou Patentee after: Hubei Oilfield Chemical Industry Technology Research Institute Co.,Ltd. Address before: 434000 No. 39 Causeway Road, Jingzhou Development Zone, Hubei, China Patentee before: HUBEI HANC NEW-TECHNOLOGY Co.,Ltd. |
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Denomination of invention: A drilling fluid viscosity increasing agent beneficial for protecting oil and gas reservoirs Effective date of registration: 20231016 Granted publication date: 20130109 Pledgee: Industrial and Commercial Bank of China Limited Jingzhou Branch Pledgor: Hubei Oilfield Chemical Industry Technology Research Institute Co.,Ltd. Registration number: Y2023980061003 |