CN102453480A - Clean thickening acid for acid fracturing of carbonate reservoir - Google Patents
Clean thickening acid for acid fracturing of carbonate reservoir Download PDFInfo
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- CN102453480A CN102453480A CN2010105221854A CN201010522185A CN102453480A CN 102453480 A CN102453480 A CN 102453480A CN 2010105221854 A CN2010105221854 A CN 2010105221854A CN 201010522185 A CN201010522185 A CN 201010522185A CN 102453480 A CN102453480 A CN 102453480A
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- 239000002253 acid Substances 0.000 title claims abstract description 111
- BVKZGUZCCUSVTD-UHFFFAOYSA-L Carbonate Chemical compound [O-]C([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-L 0.000 title claims abstract description 24
- 230000008719 thickening Effects 0.000 title abstract 3
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 claims abstract description 38
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 24
- -1 iron ion Chemical class 0.000 claims abstract description 23
- KRKNYBCHXYNGOX-UHFFFAOYSA-N citric acid group Chemical group C(CC(O)(C(=O)O)CC(=O)O)(=O)O KRKNYBCHXYNGOX-UHFFFAOYSA-N 0.000 claims abstract description 22
- ABBQHOQBGMUPJH-UHFFFAOYSA-M Sodium salicylate Chemical compound [Na+].OC1=CC=CC=C1C([O-])=O ABBQHOQBGMUPJH-UHFFFAOYSA-M 0.000 claims abstract description 21
- 239000003381 stabilizer Substances 0.000 claims abstract description 19
- LZZYPRNAOMGNLH-UHFFFAOYSA-M Cetrimonium bromide Chemical compound [Br-].CCCCCCCCCCCCCCCC[N+](C)(C)C LZZYPRNAOMGNLH-UHFFFAOYSA-M 0.000 claims abstract description 15
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 claims description 20
- 238000004140 cleaning Methods 0.000 claims description 18
- 238000003756 stirring Methods 0.000 claims description 15
- 238000002360 preparation method Methods 0.000 claims description 11
- 229920002503 polyoxyethylene-polyoxypropylene Polymers 0.000 claims description 9
- 229910052799 carbon Inorganic materials 0.000 claims description 4
- 150000001875 compounds Chemical class 0.000 claims description 3
- 238000005303 weighing Methods 0.000 claims description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Substances [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 abstract description 17
- 230000006378 damage Effects 0.000 abstract description 4
- 238000005530 etching Methods 0.000 abstract description 3
- 229910052742 iron Inorganic materials 0.000 abstract description 3
- 230000020477 pH reduction Effects 0.000 abstract description 2
- 239000003208 petroleum Substances 0.000 abstract description 2
- 230000000979 retarding effect Effects 0.000 abstract 2
- 229910052739 hydrogen Inorganic materials 0.000 abstract 1
- 239000001257 hydrogen Substances 0.000 abstract 1
- 230000002035 prolonged effect Effects 0.000 abstract 1
- 239000010430 carbonatite Substances 0.000 description 18
- 239000003921 oil Substances 0.000 description 16
- 239000000243 solution Substances 0.000 description 16
- 239000002994 raw material Substances 0.000 description 9
- 239000011435 rock Substances 0.000 description 9
- 239000000126 substance Substances 0.000 description 9
- 230000035699 permeability Effects 0.000 description 8
- 230000000694 effects Effects 0.000 description 7
- 238000002474 experimental method Methods 0.000 description 7
- 239000007788 liquid Substances 0.000 description 7
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 6
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 5
- 230000007797 corrosion Effects 0.000 description 5
- 238000005260 corrosion Methods 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 5
- 238000004519 manufacturing process Methods 0.000 description 4
- UHOVQNZJYSORNB-UHFFFAOYSA-N Benzene Chemical compound C1=CC=CC=C1 UHOVQNZJYSORNB-UHFFFAOYSA-N 0.000 description 3
- 239000013543 active substance Substances 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 3
- 238000000605 extraction Methods 0.000 description 3
- 239000007789 gas Substances 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 239000003345 natural gas Substances 0.000 description 3
- HEDRZPFGACZZDS-UHFFFAOYSA-N Chloroform Chemical compound ClC(Cl)Cl HEDRZPFGACZZDS-UHFFFAOYSA-N 0.000 description 2
- 241000282326 Felis catus Species 0.000 description 2
- PEDCQBHIVMGVHV-UHFFFAOYSA-N Glycerine Chemical compound OCC(O)CO PEDCQBHIVMGVHV-UHFFFAOYSA-N 0.000 description 2
- 208000027418 Wounds and injury Diseases 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000007334 copolymerization reaction Methods 0.000 description 2
- 239000003292 glue Substances 0.000 description 2
- 239000003112 inhibitor Substances 0.000 description 2
- 230000002401 inhibitory effect Effects 0.000 description 2
- 230000005764 inhibitory process Effects 0.000 description 2
- 208000014674 injury Diseases 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- 230000003245 working effect Effects 0.000 description 2
- 239000004215 Carbon black (E152) Substances 0.000 description 1
- 241000628997 Flos Species 0.000 description 1
- 241000669298 Pseudaulacaspis pentagona Species 0.000 description 1
- 239000007864 aqueous solution Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 125000002091 cationic group Chemical group 0.000 description 1
- 239000013522 chelant Substances 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 239000010779 crude oil Substances 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000001934 delay Effects 0.000 description 1
- 230000003111 delayed effect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 239000000839 emulsion Substances 0.000 description 1
- 244000144992 flock Species 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 125000002485 formyl group Chemical class [H]C(*)=O 0.000 description 1
- 239000003349 gelling agent Substances 0.000 description 1
- 235000011187 glycerol Nutrition 0.000 description 1
- 229930195733 hydrocarbon Natural products 0.000 description 1
- 150000002430 hydrocarbons Chemical group 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-M hydroxide Chemical compound [OH-] XLYOFNOQVPJJNP-UHFFFAOYSA-M 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000008267 milk Substances 0.000 description 1
- 210000004080 milk Anatomy 0.000 description 1
- 235000013336 milk Nutrition 0.000 description 1
- 239000003129 oil well Substances 0.000 description 1
- 230000003204 osmotic effect Effects 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 239000003348 petrochemical agent Substances 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 238000007639 printing Methods 0.000 description 1
- 230000035484 reaction time Effects 0.000 description 1
- 239000003340 retarding agent Substances 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
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- Detergent Compositions (AREA)
- Cosmetics (AREA)
Abstract
Clean thickening acid for acid fracturing of a carbonate reservoir is applied to the technical field of acidification and acid fracturing of a petroleum carbonate reservoir. The weight percentages of the components are as follows: cetyl trimethylammonium bromide: 3-7%; sodium ortho-hydroxybenzoate: 0.3-0.7%; hydrochloric acid: 15-28%; the iron ion stabilizer is citric acid, CX-301 or TW-1, citric acid: 0.125 to 0.25; CX-301: 0.05-0.1%, TW-1: 0.3-0.5%; bis-imidazoline quaternary ammonium salts: 0.2-0.25%; the balance of water. The clean thickening acid has excellent retarding performance, the retarding rate can reach 42-56%, the viscosity of fresh acid is 25-40 mPa.S, and the viscosity of acid liquor rises when the carbonate reservoir is subjected to acid fracturing. When the concentration of hydrogen ions is reduced to PH value more than or equal to 2, the viscosity of the acid liquor is increased to form viscoelastic gel, the permeation resistance of the acid liquor in a high permeation layer is increased, and the length of acid etching cracks is prolonged. The reacted residual acid gel can automatically break gel, has no residue, is easy to flow back and has little damage to the stratum.
Description
Technical field
The invention belongs to petroleum industry and use the chemical technical field, relate in particular in a kind of oil, the Natural gas extraction, the acidifying and the acid fracturing of carbonate reservoir split technical field.Be a kind of low injury, real-time tackify, the slow adjustable cleaning gelled acid of rate.
Background technology
In the hydrocarbon-bearing pool stratum, carbonate reservoir occupies quite great proportion.The oil of this reservoir, gas can't form higher production capacity owing to low permeability.In oil, Natural gas extraction, it is one of effective measure of carbonate reservoir well production increment that acid fracturing splits technology.The low-permeability carbonate reservoirs acid fracturing splits effect of increasing production and depends primarily on the long and fracture flow capacity of acid etching seam.But because in the conventional acidifying mode, hydrochloric acid with can rapid reaction after carbonatite contact, near the carbonate formation can only etching oil reservoir pit shaft, the oil well bottom is linked up apart from weak point, can not form higher fracture flow capacity.
In order to solve this difficult problem, the colleague attempts the gelled acid that development can be slow both at home and abroad, but all adopts polymkeric substance as the multiviscosisty retarding agent mostly.Nineteen eighty-three, U.S.'s Karen Phillips company developed a kind of polymkeric substance---DSGA, after in its adding acid, had formed a kind of gel acid (also claiming gelled acid) that delays the hydrochlorate reaction times.This acid can reduce on the stratum leak-off, delayed response time, makes its can be darker farther communication stratum, makes oil reservoir that higher production capacity arranged and popular.China introduces this product in nineteen ninety-five, and uses in oil fields such as long celebrating, Tarim Basins.But owing to costing an arm and a leg of acidproof polymkeric substance, the price of allotting gel acid with this product is also expensive, and the acid solution of allotting also has a lot of oiliness suspended substances to float over top.
The carbonate formation in domestic part oil field almost every mouthful of well all needs acid fracturing.For the minimizing expense, the SEPIGEL 305 aqua that more domestic producers just will be used for drilling well originally is used for acidifying, because this product must add about 10%, and becomes floss at 70 ℃, resistance to elevated temperatures is very poor, can not adapt to the oil field deep well needs.So domestic have company to use copolymerization technique again, with the product of SEPIGEL 305 and cationic copolymerization as acid liquor gellant.This product increases than the heat resistance of aqua SEPIGEL 305; But solubility in acid is poor, needs to process with lightweight oil and tensio-active agent and multipolymer the milk sap use of suspension, and the liquid of allotting is also inhomogeneous; One deck oily suspended substance is arranged; Frictional resistance is high when injecting well with fracturing truck, and this product also is prone to aldehyde crosslinked, can cause stopping up the stratum and influences the oil gas well productivity.
Split the deficiency with acid system to existing hyposmosis Carbonate Reservoir acid fracturing, comprehensive Carbonate Reservoir acid fracturing splits the requirement of technology to acid solution, and we research and develop fuel-displaced, well acid fracturing with low injury, tackify, the slow adjustable cleaning gelled acid of rate system in real time.
Summary of the invention
The objective of the invention is: provide in a kind of oil, the Natural gas extraction, the acidifying of carbonate reservoir and acid fracturing are with cleaning gelled acid and preparation method thereof.This kind cleaning gelled acid, bright acid and residual acid all have certain viscosity, can improve rate of permeation, effectively prolong acid-etched fracture length, realize the deep penetration of acid fluid system.And the acid solution corrosion inhibiting ability is strong, can effectively prolong the work-ing life of equipment and tubing string.
Carbonatite acid fracturing provided by the present invention with cleaning gelled acid technical scheme is:
One, the carbonatite acid fracturing is used the raw material of cleaning gelled acid:
Raw material comprises:
1, cetyl trimethylammonium bromide (industrial goods)
Molecular formula: C
16H
33(CH
3)
3NBr
Structural formula:
Character: yellow thick liquid is a kind of cats product, and water soluble is slightly soluble in ethanol.With positively charged ion, nonionic, amphoterics excellent compatibility is arranged, chemicalstability is good, heat-resisting, fast light, withstand voltage, strong alkali-acid resistance;
Purposes: emulsion pore forming material, tensio-active agent;
Factory: Urumchi, Xinjiang Ke Ruier company.
2, salicylic acid sodium (industrial goods)
Molecular formula: C
7H
5NaO
3
Structural formula:
Character: 200 ℃ of fusing points.White scale or powder.Soluble in water and glycerine (1: 5) can be dissolved in 95% ethanol, is dissolved in ether, chloroform and benzene hardly.The aqueous solution is subacidity (pH=5-6);
Purposes: acvator;
Factory: Urumchi, Xinjiang Ke Ruier company, the photochemical factory in Yixing City Shen.
3, hydrochloric acid (concentration 36～38%) (industrial goods)
4, Fe stabilizer (Hydrocerol A, CX-301, TW-1)
Purposes: the iron ion in the chelate solution, avoid forming in the solution ironic hydroxide flocks;
Factory: Hydrocerol A: Hunan Dongting Citric Acid Chemicals Co., Ltd.; CX-301 high temperature iron ion stabilizer: the ultra new science and technology in Xi'an Development Co., Ltd; The TW-1 Fe stabilizer: Petrotechnik Ltd. is raised in sky, Weifang.
5, bi-imidazoline quaternary ammonium salt (industrial goods)
" the synthetic and corrosion inhibition research of bi-imidazoline quaternary ammonium salt " Li Zhiyuan etc. is published in 2004 the 03rd phases of " corrosion and protection " periodical, and " the fld acidifying is estimated with synthetic the reaching of inhibiter bi-imidazoline quaternary ammonium salt " Pan Chengsong etc. is published in " the bi-imidazoline quaternary ammonium salt technology and the market study report " of " Speciality Petrochemicals progress " periodical o. 11th in 2008.
Molecular formula: C
10H
18N
4
Structural formula:
Character: brown liquid, cats product, active matter content are 70% ± 2, water-soluble and low-carbon alcohol, good heat-resistant stability is met heat and is not decomposed;
Purposes: acidification high temperature inhibiter;
Factory: Qinhuangdao triumph chemical industry ltd, Dongying section insult the chemical plant.
6, N, N-di-sec-butyl-p-phenyl enediamine (industrial goods)
Molecular formula: C
14H
24N
2
Structural formula:
Character: reddish-brown liquid, density 0.942, specific refractory power 1.539;
Purposes: oxidation inhibitor, inhibitor;
Factory: the Nanjing profit reaches chemical industry ltd.
7, TEPA polyoxyethylene polyoxypropylene ether (industrial goods)
Liu Cheng chief editor tensio-active agent application manual one book, Chemical Industry Press, date of publication: the 1st edition the 1st printing May in 1992, the 629th page.
Trade(brand)name: AP-221 (P-227)
Character: weak yellow liquid, density 0.934;
Purposes: crude oil demulsifier;
Factory: Liaoyang petrochemical plant, Liaoyuan, Jilin petrochemical plant, Shashi, Hubei petrochemical industry, Xi'an petrochemical plant, new city secondary clock mountain petrochemical plant.
8, water.
The carbonatite acid fracturing uses each weight percentages of components of the raw material of gelled acid to be:
1, cetyl trimethylammonium bromide: 3～7%;
2, salicylic acid sodium: 0.3～0.7%;
3, hydrochloric acid: 15～28%;
4, Fe stabilizer is Hydrocerol A, CX-301 or TW-1, Hydrocerol A: 0.125～0.25; CX-301:0.05～0.1%, TW-1:0.3～0.5%; Only add wherein a kind of Fe stabilizer;
5, bi-imidazoline quaternary ammonium salt: 0.2～0.25%;
6, all the other are water; Each weight percentages of components sum is 100%.
The preferred ingredients ratio is:
1, cetyl trimethylammonium bromide: 5～7%;
2, salicylic acid sodium: 0.5～0.7%;
3, concentration is 36～38% hydrochloric acid: 20～25%;
4, Fe stabilizer is Hydrocerol A, CX-301 or TW-1, Hydrocerol A: 0.2～0.25%, and CX-301:0.05～0.1%, TW-1:0.3～0.5%; Only add wherein a kind of Fe stabilizer;
5, bi-imidazoline quaternary ammonium salt: 0.22～0.25%.
6, all the other are water; Each weight percentages of components sum is 100%.
Carbonate oil reservoir acid fracturing can also comprise with the cleaning gelled acid:
7, TEPA polyoxyethylene polyoxypropylene ether: 0～0.3%;
8, N, N-di-sec-butyl-p-phenyl enediamine: 0～0.06%;
Two, the carbonatite acid fracturing is with the preparation method of gelled acid:
Major equipment:
The container, graduated cylinder, transfer pipet, day equality that have whisking appliance
Carbonate oil reservoir acid fracturing is with cleaning the gelled acid preparation method:
A, in container a, add to calculate the water of required weight;
B, in container b, add salicylic acid sodium, the water compound concentration is that 10% salicylic acid sodium water solution is subsequent use among the extracting container a;
C, in container a, add hydrochloric acid in proportion, be made into hydrochloric acid soln.Take by weighing Fe stabilizer then in proportion and add in the acid solution, stir.Get cetyl trimethylammonium bromide more in proportion, add in the solution, stir;
Solution in D, the continuous stirred vessel a, and with among the adding of the salicylic acid sodium solution among the container b container a, stir;
E, last, with bi-imidazoline quaternary ammonium salt, TEPA polyoxyethylene polyoxypropylene ether and N, the N-di-sec-butyl-p-phenyl enediamine adds among the container a successively, stirs while adding, and after stirring, obtains carbonate oil reservoir acid fracturing with the cleaning gelled acid.
The technician of field conduct acid fracturing can use, and is not described in detail.
The invention has the beneficial effects as follows: the slow excellent property of this cleaning gelled acid, slow rate can reach 42～56%, and its bright acid itself has certain viscosity, and (25～40mPa.S), when the Carbonate Reservoir acid fracturing, sour rock speed of response ratio is with concentration salt slow acid.And along with the carrying out of sour rock reaction, Sorensen value reduces, and acid liquid viscosity rises gradually.When Sorensen value is reduced to PH >=2; Acid liquid viscosity increases and forms viscoelastic gel; Thereby increased the osmotic resistance of acid solution, can realize the sour low permeability layer that continues to penetrate and turn to other high pollution in the acid fracturing process, can effectively prolong acid-etched fracture length to the deep at most permeable zone.And reacted residual acid gel is met the broken automatically glue of oil, gas, water, and viscosity only has 5.9mPa.S behind the broken glue, and does not have residue, is prone to the row of returning, and is little to formation damage.Inhibiter in this cleaning gelled acid adopts efficient bi-imidazoline quaternary ammonium salt inhibiter, and corrosion inhibiting ability is strong, and corrosion inhibition rate can reach 99%, can effectively prolong the work-ing life of equipment and tubing string.After the rock core acidifying experiment, rate of permeation improves 5～14 times.This gelled acid preparation is simple, easy to use.
Embodiment
Embodiment 1: the carbonatite acid fracturing uses each weight percentages of components of the raw material of gelled acid to be:
1, cetyl trimethylammonium bromide: 3%;
2, salicylic acid sodium: 0.3%;
3, concentration is 38% hydrochloric acid: 15%;
4, Fe stabilizer adopts Hydrocerol A: 0.15%;
5, bi-imidazoline quaternary ammonium salt: 0.2%;
6, TEPA polyoxyethylene polyoxypropylene ether: 0.25%
7, N, N-di-sec-butyl-p-phenyl enediamine: 0.05%
8, all the other are water; Each weight percentages of components sum is 100%.
The carbonatite acid fracturing is with the preparation method of gelled acid:
A, in container a, add to calculate the water of required weight;
B, in container b, add salicylic acid sodium, the water compound concentration is that 10% salicylic acid sodium water solution is subsequent use among the extracting container a;
C, in container a, add hydrochloric acid in proportion, be made into hydrochloric acid soln.Take by weighing Fe stabilizer then in proportion and add in the acid solution, stir.Get cetyl trimethylammonium bromide more in proportion, add in the solution, stir;
Solution in D, the continuous stirred vessel a, and with among the adding of the salicylic acid sodium solution among the container b container a, stir;
E, last, with bi-imidazoline quaternary ammonium salt, TEPA polyoxyethylene polyoxypropylene ether and N, the N-di-sec-butyl-p-phenyl enediamine adds among the container a successively, stirs while adding, and after stirring, obtains carbonate oil reservoir acid fracturing with the cleaning gelled acid.
Effect: the carbonatite acid fracturing reaches 42% with the slow rate of gelled acid.Through rock core acidifying experiment, core permeability improves 5.6 times.
Embodiment 2: the carbonatite acid fracturing uses each weight percentages of components of the raw material of gelled acid to be:
1, cetyl trimethylammonium bromide (industrial goods): 4%;
2, salicylic acid sodium (industrial goods): 0.4%;
3, hydrochloric acid (industrial goods): 20%;
4, Fe stabilizer adopts CX-301:0.1%;
5, bi-imidazoline quaternary ammonium salt (industrial goods): 0.2%;
6, TEPA polyoxyethylene polyoxypropylene ether (industrial goods): 0.2%
7, N, N-di-sec-butyl-p-phenyl enediamine (industrial goods): 0.04%
8, all the other are water; Each weight percentages of components sum is 100%.
The preparation method is identical with embodiment 1, but adds the weight ratio difference.
Effect: the carbonatite acid fracturing reaches 48% with the slow rate of gelled acid.Through rock core acidifying experiment, core permeability improves 7.2 times.
Embodiment 3: the carbonatite acid fracturing uses each weight percentages of components of the raw material of gelled acid to be:
1, cetyl trimethylammonium bromide: 5%;
2, salicylic acid sodium: 0.5%;
3, hydrochloric acid: 22%;
4, Fe stabilizer adopts Hydrocerol A: 0.2%;
5, bi-imidazoline quaternary ammonium salt: 0.25%;
6, TEPA polyoxyethylene polyoxypropylene ether: 0.1%;
7, N, N-di-sec-butyl-p-phenyl enediamine: 0.02%;
8, all the other are water; Each weight percentages of components sum is 100%.
The preparation method is identical with embodiment 1, but adds the weight ratio difference.
Effect: the carbonatite acid fracturing reaches 52% with the slow rate of gelled acid.Through rock core acidifying experiment, core permeability improves 9.6 times.
Embodiment 4: the carbonatite acid fracturing uses each weight percentages of components of the raw material of gelled acid to be:
1, cetyl trimethylammonium bromide (industrial goods): 6%;
2, salicylic acid sodium (industrial goods): 0.6%;
3, hydrochloric acid (industrial goods): 25%;
4, Fe stabilizer adopts TW-1:0.5%;
5, bi-imidazoline quaternary ammonium salt (industrial goods): 0.23%;
6, all the other are water; Each weight percentages of components sum is 100%.
The preparation method is identical with embodiment 1, but adds the weight ratio difference.
Effect: the carbonatite acid fracturing reaches 56% with the slow rate of gelled acid.Through rock core acidifying experiment, core permeability improves 12.5 times.
Embodiment 5: the carbonatite acid fracturing uses each weight percentages of components of the raw material of gelled acid to be:
1, cetyl trimethylammonium bromide (industrial goods): 6%;
2, salicylic acid sodium (industrial goods): 0.6%;
3, hydrochloric acid (industrial goods): 28%;
4, Fe stabilizer adopts CX-301:0.08%;
5, bi-imidazoline quaternary ammonium salt (industrial goods): 0.21%;
6, all the other are water; Each weight percentages of components sum is 100%.
The preparation method is identical with embodiment 1, but adds the weight ratio difference.
Effect: the carbonatite acid fracturing reaches 56% with the slow rate of gelled acid.Through rock core acidifying experiment, core permeability improves 14.7 times.
Embodiment 6: the carbonatite acid fracturing uses each weight percentages of components of the raw material of gelled acid to be:
1, cetyl trimethylammonium bromide: 6%;
2, salicylic acid sodium: 0.6%;
3, hydrochloric acid: 25%;
4, Fe stabilizer adopts Hydrocerol A: 0.25%;
5, bi-imidazoline quaternary ammonium salt: 0.25%;
6, all the other are water; Each weight percentages of components sum is 100%.
The preparation method is identical with embodiment 1, but adds the weight ratio difference.
Effect: the carbonatite acid fracturing reaches 56% with the slow rate of gelled acid.Through rock core acidifying experiment, core permeability improves 13.8 times.
Claims (4)
1. a Carbonate Reservoir acid fracturing is with the cleaning gelled acid, and it is characterized in that: each weight percentages of components is:
Cetyl trimethylammonium bromide: 3～7%;
Salicylic acid sodium: 0.3～0.7%;
Hydrochloric acid: 15～28%;
Fe stabilizer is Hydrocerol A, CX-301 or TW-1, Hydrocerol A: 0.125～0.25; CX-301:0.05～0.1%, TW-1:0.3～0.5%;
Bi-imidazoline quaternary ammonium salt: 0.2～0.25%;
All the other are water; Each weight percentages of components sum is 100%.
2. carbonate oil reservoir acid fracturing according to claim 1 is characterized in that cetyl trimethylammonium bromide: 5～7% with the cleaning gelled acid;
Salicylic acid sodium: 0.5～0.7%;
Concentration is 36～38% hydrochloric acid: 20～25%;
Fe stabilizer is Hydrocerol A, CX-301 or TW-1, Hydrocerol A: 0.2～0.25%, and CX-301:0.05～0.1%, TW-1:0.3～0.5%;
Bi-imidazoline quaternary ammonium salt: 0.22～0.25%;
All the other are water; Each weight percentages of components sum is 100%.
3. carbonate oil reservoir acid fracturing according to claim 1 and 2 is characterized in that also comprising with the cleaning gelled acid:
TEPA polyoxyethylene polyoxypropylene ether: 0～0.3%;
N, N-di-sec-butyl-p-phenyl enediamine: 0～0.06%.
4. carbonate oil reservoir acid fracturing according to claim 3 is characterized in that with the cleaning gelled acid preparation method comprises following operation steps:
A, in container a, add to calculate the water of required weight;
B, in container b, add salicylic acid sodium, the water compound concentration is that 10% salicylic acid sodium water solution is subsequent use among the extracting container a;
C, in container a, add hydrochloric acid in proportion, be made into hydrochloric acid soln; Take by weighing Fe stabilizer then in proportion and add in the acid solution, stir; Get cetyl trimethylammonium bromide more in proportion, add in the solution, stir;
Solution in D, the continuous stirred vessel a, and with among the adding of the salicylic acid sodium solution among the container b container a, stir;
E, last, with bi-imidazoline quaternary ammonium salt, TEPA polyoxyethylene polyoxypropylene ether and N, the N-di-sec-butyl-p-phenyl enediamine adds among the container a successively, stirs while adding, and after stirring, obtains carbonate oil reservoir acid fracturing with the cleaning gelled acid.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010522185 CN102453480B (en) | 2010-10-22 | 2010-10-22 | Clean viscous acid for acid fracturing of carbonate reservoir |
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| CN 201010522185 CN102453480B (en) | 2010-10-22 | 2010-10-22 | Clean viscous acid for acid fracturing of carbonate reservoir |
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| Publication Number | Publication Date |
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| CN102453480A true CN102453480A (en) | 2012-05-16 |
| CN102453480B CN102453480B (en) | 2013-05-01 |
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|---|---|---|---|
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| CN103215027A (en) * | 2012-01-18 | 2013-07-24 | 中国石油天然气股份有限公司 | Acidic surfactant fracturing fluid system |
| CN104357041A (en) * | 2014-11-12 | 2015-02-18 | 中国石油天然气股份有限公司 | Suspension acid for gas field acid fracturing and preparation method thereof |
| CN104861957A (en) * | 2015-05-08 | 2015-08-26 | 中国石油集团川庆钻探工程有限公司长庆井下技术作业公司 | Recoverable instant thickening acid |
| WO2016179742A1 (en) * | 2015-05-08 | 2016-11-17 | 中国石油集团川庆钻探工程有限公司长庆井下技术作业公司 | Recoverable instant thickening acid |
| CN106147733A (en) * | 2015-04-02 | 2016-11-23 | 中国石油天然气股份有限公司 | Water plugging composition and preparation method and application thereof |
| CN106967402A (en) * | 2017-03-16 | 2017-07-21 | 中国石油化工股份有限公司 | A kind of acidification blocking remover and its construction method suitable for deep volcanic rock gas reservoir |
| CN107216867A (en) * | 2017-06-14 | 2017-09-29 | 陕西延长石油(集团)有限责任公司研究院 | A kind of low viscous drop resistance slippery water acid solution for Carbonate Reservoir |
| US9932517B1 (en) | 2017-04-06 | 2018-04-03 | China University Of Petroleum (East China) | Polymer and preparation method thereof, and viscosified acid fluid |
| CN107987816A (en) * | 2017-11-27 | 2018-05-04 | 延长油田股份有限公司 | A kind of layer dredge method and selective acidizing additive |
| CN108102633A (en) * | 2017-11-17 | 2018-06-01 | 中国石油天然气股份有限公司 | Viscoelastic acid-based fracturing fluid and preparation method thereof |
| CN108611082A (en) * | 2016-12-13 | 2018-10-02 | 中国石油天然气股份有限公司 | Clean fracturing fluid and preparation method thereof |
| CN109456751A (en) * | 2018-12-20 | 2019-03-12 | 西南石油大学 | A kind of Low Damage viscous acid and its preparation method and application |
| CN109554174A (en) * | 2019-01-09 | 2019-04-02 | 西南石油大学 | Tempered spline and preparation method thereof for low-permeability carbonate reservoirs acidification |
| CN109722234A (en) * | 2017-10-31 | 2019-05-07 | 中国石油天然气股份有限公司 | Acidic fracturing fluid and preparation method thereof |
| US10876043B2 (en) | 2018-04-28 | 2020-12-29 | Petrochina Company Limited | Chelating agent for reservoir acidification and stimulating injection and its preparation method and application |
| AU2018418035B2 (en) * | 2018-05-10 | 2021-08-05 | China University Of Mining And Technology | Water retention method for promoting self-healing of mining fractures by chemically softening carbonatite |
| CN113671148A (en) * | 2020-05-14 | 2021-11-19 | 中国石油天然气股份有限公司 | Experimental test method for effective length of acid-etched crack |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101613622A (en) * | 2009-07-29 | 2009-12-30 | 中国石油化工集团公司 | A kind of composite inhibiter and its production and use |
-
2010
- 2010-10-22 CN CN 201010522185 patent/CN102453480B/en active Active
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101613622A (en) * | 2009-07-29 | 2009-12-30 | 中国石油化工集团公司 | A kind of composite inhibiter and its production and use |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103215027B (en) * | 2012-01-18 | 2015-09-23 | 中国石油天然气股份有限公司 | Acidic surfactant fracturing fluid system |
| CN103215027A (en) * | 2012-01-18 | 2013-07-24 | 中国石油天然气股份有限公司 | Acidic surfactant fracturing fluid system |
| CN104357041B (en) * | 2014-11-12 | 2017-06-13 | 中国石油天然气股份有限公司 | Suspension acid for gas field acid fracturing and preparation method thereof |
| CN104357041A (en) * | 2014-11-12 | 2015-02-18 | 中国石油天然气股份有限公司 | Suspension acid for gas field acid fracturing and preparation method thereof |
| CN106147733A (en) * | 2015-04-02 | 2016-11-23 | 中国石油天然气股份有限公司 | Water plugging composition and preparation method and application thereof |
| CN106147733B (en) * | 2015-04-02 | 2019-03-12 | 中国石油天然气股份有限公司 | Water plugging composition and preparation method and application thereof |
| CN104861957A (en) * | 2015-05-08 | 2015-08-26 | 中国石油集团川庆钻探工程有限公司长庆井下技术作业公司 | Recoverable instant thickening acid |
| WO2016179742A1 (en) * | 2015-05-08 | 2016-11-17 | 中国石油集团川庆钻探工程有限公司长庆井下技术作业公司 | Recoverable instant thickening acid |
| CN104861957B (en) * | 2015-05-08 | 2017-07-25 | 中国石油集团川庆钻探工程有限公司长庆井下技术作业公司 | A kind of recyclable instant viscous acid |
| CN108611082A (en) * | 2016-12-13 | 2018-10-02 | 中国石油天然气股份有限公司 | Clean fracturing fluid and preparation method thereof |
| CN106967402A (en) * | 2017-03-16 | 2017-07-21 | 中国石油化工股份有限公司 | A kind of acidification blocking remover and its construction method suitable for deep volcanic rock gas reservoir |
| US9932517B1 (en) | 2017-04-06 | 2018-04-03 | China University Of Petroleum (East China) | Polymer and preparation method thereof, and viscosified acid fluid |
| CN107216867A (en) * | 2017-06-14 | 2017-09-29 | 陕西延长石油(集团)有限责任公司研究院 | A kind of low viscous drop resistance slippery water acid solution for Carbonate Reservoir |
| CN109722234A (en) * | 2017-10-31 | 2019-05-07 | 中国石油天然气股份有限公司 | Acidic fracturing fluid and preparation method thereof |
| CN108102633A (en) * | 2017-11-17 | 2018-06-01 | 中国石油天然气股份有限公司 | Viscoelastic acid-based fracturing fluid and preparation method thereof |
| CN108102633B (en) * | 2017-11-17 | 2020-10-09 | 中国石油天然气股份有限公司 | Viscoelastic acid-based fracturing fluid and preparation method thereof |
| CN107987816A (en) * | 2017-11-27 | 2018-05-04 | 延长油田股份有限公司 | A kind of layer dredge method and selective acidizing additive |
| US10876043B2 (en) | 2018-04-28 | 2020-12-29 | Petrochina Company Limited | Chelating agent for reservoir acidification and stimulating injection and its preparation method and application |
| AU2018418035B2 (en) * | 2018-05-10 | 2021-08-05 | China University Of Mining And Technology | Water retention method for promoting self-healing of mining fractures by chemically softening carbonatite |
| CN109456751A (en) * | 2018-12-20 | 2019-03-12 | 西南石油大学 | A kind of Low Damage viscous acid and its preparation method and application |
| CN109456751B (en) * | 2018-12-20 | 2022-01-25 | 西南石油大学 | Low-damage thickening acid and preparation method and application thereof |
| CN109554174A (en) * | 2019-01-09 | 2019-04-02 | 西南石油大学 | Tempered spline and preparation method thereof for low-permeability carbonate reservoirs acidification |
| CN113671148A (en) * | 2020-05-14 | 2021-11-19 | 中国石油天然气股份有限公司 | Experimental test method for effective length of acid-etched crack |
| CN113671148B (en) * | 2020-05-14 | 2024-05-28 | 中国石油天然气股份有限公司 | Experimental test method for effective length of acid etching crack |
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