CN102453480B - Clean viscous acid for acid fracturing of carbonate reservoir - Google Patents
Clean viscous acid for acid fracturing of carbonate reservoir Download PDFInfo
- Publication number
- CN102453480B CN102453480B CN 201010522185 CN201010522185A CN102453480B CN 102453480 B CN102453480 B CN 102453480B CN 201010522185 CN201010522185 CN 201010522185 CN 201010522185 A CN201010522185 A CN 201010522185A CN 102453480 B CN102453480 B CN 102453480B
- Authority
- CN
- China
- Prior art keywords
- acid
- fracturing
- percent
- container
- carbonate reservoir
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Landscapes
- Detergent Compositions (AREA)
- Cosmetics (AREA)
Abstract
The invention discloses a clean viscous acid for acid fracturing of a carbonate reservoir, which is applied to the technical fields of acidification and acid fracturing of petroleum carbonate reservoirs. The clean viscous acid consists of the following components in percentage by weight: 3-7 percent of hexadecyl trimethyl ammonium bromide, 0.3-0.7 percent of sodium salicylate, 15-28 percent of hydrochloric acid, 0.125-0.25 percent of citric acid or 0.05-0.1 percent of CX-301 or 0.3-0.5 percent of TW-1 serving as an iron ion stabilizing agent, 0.2-0.25 percent of a diimidazoline quaternary ammonium salt and the balance of water. The clean viscous acid has high retardative property, the retarding rate can reach 42-56 percent, the fresh acid viscosity is 25-40 mPa.S, and the acid liquor viscosity rises during acid fracturing of the carbonate reservoir. When the hydrogen ion concentration falls till the pH is more than or equal to 2, the acid liquor viscosity rises for forming viscoelastic gel, the permeation resistance of an acid liquor in a high permeation layer is increased, and the length of an acid etching crack is prolonged. Reacted residual acid gel can undergo gel breaking automatically, is free from residues, is easy for discharging, and has small damage to stratums.
Description
Technical field
The invention belongs to petroleum industry chemical technical field, relate in particular in a kind of oil, the Natural gas extraction, acidifying and the acid fracturing of carbonate reservoir split technical field.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 sizable 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 mostly all adopts polymkeric substance as the multiviscosisty retarding agent.Nineteen eighty-three, U.S.'s Karen Phillips company developed a kind of polymkeric substance---DSGA, had formed a kind of gel acid (also claiming gelled acid) that delays the hydrochlorate reaction times after in its adding acid.This acid can reduce on the stratum leak-off, delayed response time, can darker farther communication stratum, and make oil reservoir that higher production capacity be arranged and popular.China introduces this product in nineteen ninety-five, and uses in oil fields such as long celebrating, Tarim Basins.But because acidproof polymkeric substance is expensive, 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 Some Domestic oil field almost every mouthful of well all needs acid fracturing.For cost reduction, the polyacrylamide 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 again company to use copolymerization technique, with the product of polyacrylamide and cationic copolymerization as acid liquor gellant.This product increases than the heat resistance of aqua polyacrylamide, but solubility in acid is poor, need to make with lightweight oil and tensio-active agent and multipolymer the milk sap use of suspension, the liquid of allotting is also inhomogeneous, one deck oily suspended substance is arranged, frictional resistance is high with in the fracturing truck Injection Well time, this product also easily and aldehyde crosslinked, can cause stopping up the stratum and affect Oil ﹠ Gas Productivity.
Split the deficiency of using acid system for existing hyposmosis fracturing of carbonate reservoir, comprehensive fracturing of carbonate reservoir splits technology to the requirement of acid solution, and we research and develop fuel-displaced, well acid fracturing injury, real-time tackify, the slow adjustable cleaning gelled acid of the rate system of hanging down.
Summary of the invention
The objective of the invention is: the acidifying of carbonate reservoir and clean viscous acid for acid fracturing and preparation method thereof are provided in a kind of oil, the Natural gas extraction.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, effectively the work-ing life of extension device and tubing string.
Carbonate Acid Fracturing provided by the present invention with cleaning gelled acid technical scheme is:
One, the Carbonate Acid Fracturing 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 good compatibleness is arranged, chemical stability is good, heat-resisting, fast light, withstand voltage, strong alkali-acid resistance;
Purposes: emulsion pore forming material, tensio-active agent;
Factory: Xinjiang Urumqi 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 hardly ether, chloroform and benzene.The aqueous solution is subacidity (pH=5-6);
Purposes: activator;
Factory: Xinjiang Urumqi Ke Ruier company, the photochemical factory in Yixing City Shen.
3, hydrochloric acid (concentration 36～38%) (industrial goods)
4, Fe stabilizer (citric acid, CX-301, TW-1)
Purposes: the iron ion in the chelate solution, avoid forming in the solution ironic hydroxide flocks;
Factory: citric acid: Hunan Dongting Citric Acid Chemicals Co., Ltd.; CX-301 high temperature iron ion stabilizer: the super 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 " corrosion and protection " periodical the 03rd phase in 2004, and " the oil-gas field acidifying is estimated with synthetic the reaching of inhibiter bi-imidazoline quaternary ammonium salt " Pan Chengsong etc. is published in " 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 company limited, 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, antioxidant;
Factory: the Nanjing profit reaches chemical industry company limited.
7, tetraethylene pentamine 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.
Carbonate Acid Fracturing with each weight percentages of components of the raw material of gelled acid is:
1, cetyl trimethylammonium bromide: 3～7%;
2, salicylic acid sodium: 0.3～0.7%;
3, hydrochloric acid: 15～28%;
4, Fe stabilizer is citric acid, CX-301 or TW-1, citric acid: 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%.
Preferred ratio of component 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 citric acid, CX-301 or TW-1, citric acid: 0.2～0.25%, 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: 0.22～0.25%.
6, all the other are water; Each weight percentages of components sum is 100%.
Carbonate oil reservoir clean viscous acid for acid fracturing can also comprise:
7, tetraethylene pentamine polyoxyethylene polyoxypropylene ether: 0～0.3%;
8, N, N-di-sec-butyl-p-phenyl enediamine: 0～0.06%;
Two, the Carbonate Acid Fracturing preparation method of gelled acid:
Major equipment:
Container, graduated cylinder, transfer pipet, day equality with agitator
Carbonate oil reservoir clean viscous acid for acid fracturing preparation method:
A, in container a, add to calculate the water of required weight;
B, add salicylic acid sodium in container b, the water compound concentration is that 10% salicylic acid sodium water solution is for subsequent use among the extracting container a;
C, in container a, add in proportion hydrochloric acid, be made into hydrochloric acid soln.Then take by weighing in proportion Fe stabilizer and add in the acid solution, stir.Get in proportion again cetyl trimethylammonium bromide, 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, tetraethylene pentamine 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 clean viscous acid for acid fracturing.
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 fracturing of carbonate reservoir, sour rock speed of response ratio is with concentration salt slow acid.And along with the carrying out of sour rock reaction, hydrogen ion concentration reduces, and acid liquid viscosity rises gradually.When hydrogen ion concentration is down to PH 〉=2, acid liquid viscosity increases and forms viscoelastic gel, thereby increased the osmotic resistance of acid solution at most permeable zone, can realize the sour low permeability layer that continues to penetrate and turn to the deep other high pollution in the acid fracturing process, can effectively prolong acid-etched fracture length.And reacted residual acid gel is met automatically broken glue of oil, gas, water, and viscosity only has 5.9mPa.S behind the broken glue, and without residue, easily the row of returning is little to formation damage.Inhibiter in this cleaning gelled acid adopts efficient bi-imidazoline quaternary ammonium salt corrosion inhibitor, and corrosion inhibiting ability is strong, and corrosion inhibition rate can reach 99%, effectively the work-ing life of extension device 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: Carbonate Acid Fracturing with each weight percentages of components of the raw material of gelled acid is:
1, cetyl trimethylammonium bromide: 3%;
2, salicylic acid sodium: 0.3%;
3, concentration is 38% hydrochloric acid: 15%;
4, Fe stabilizer adopts citric acid: 0.15%;
5, bi-imidazoline quaternary ammonium salt: 0.2%;
6, tetraethylene pentamine 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 Carbonate Acid Fracturing preparation method of gelled acid:
A, in container a, add to calculate the water of required weight;
B, add salicylic acid sodium in container b, the water compound concentration is that 10% salicylic acid sodium water solution is for subsequent use among the extracting container a;
C, in container a, add in proportion hydrochloric acid, be made into hydrochloric acid soln.Then take by weighing in proportion Fe stabilizer and add in the acid solution, stir.Get in proportion again cetyl trimethylammonium bromide, 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, tetraethylene pentamine 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 clean viscous acid for acid fracturing.
Effect: the Carbonate Acid Fracturing slow rate 42% of gelled acid.Through rock core acidifying experiment, core permeability improves 5.6 times.
Embodiment 2: Carbonate Acid Fracturing with each weight percentages of components of the raw material of gelled acid is:
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, tetraethylene pentamine 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 Carbonate Acid Fracturing slow rate 48% of gelled acid.Through rock core acidifying experiment, core permeability improves 7.2 times.
Embodiment 3: Carbonate Acid Fracturing with each weight percentages of components of the raw material of gelled acid is:
1, cetyl trimethylammonium bromide: 5%;
2, salicylic acid sodium: 0.5%;
3, hydrochloric acid: 22%;
4, Fe stabilizer adopts citric acid: 0.2%;
5, bi-imidazoline quaternary ammonium salt: 0.25%;
6, tetraethylene pentamine 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 Carbonate Acid Fracturing slow rate 52% of gelled acid.Through rock core acidifying experiment, core permeability improves 9.6 times.
Embodiment 4: Carbonate Acid Fracturing with each weight percentages of components of the raw material of gelled acid is:
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 Carbonate Acid Fracturing slow rate 56% of gelled acid.Through rock core acidifying experiment, core permeability improves 12.5 times.
Embodiment 5: Carbonate Acid Fracturing with each weight percentages of components of the raw material of gelled acid is:
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 Carbonate Acid Fracturing slow rate 56% of gelled acid.Through rock core acidifying experiment, core permeability improves 14.7 times.
Embodiment 6: Carbonate Acid Fracturing with each weight percentages of components of the raw material of gelled acid is:
1, cetyl trimethylammonium bromide: 6%;
2, salicylic acid sodium: 0.6%;
3, hydrochloric acid: 25%;
4, Fe stabilizer adopts citric acid: 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 Carbonate Acid Fracturing slow rate 56% of gelled acid.Through rock core acidifying experiment, core permeability improves 13.8 times.
Claims (4)
1. clean viscous acid for acid fracturing of carbonate reservoir, 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 citric acid, CX-301 or TW-1, citric acid: 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. clean viscous acid for acid fracturing of carbonate reservoir according to claim 1 is characterized in that cetyl trimethylammonium bromide: 5～7%;
Salicylic acid sodium: 0.5～0.7%;
Concentration is 36～38% hydrochloric acid: 20～25%;
Fe stabilizer is citric acid, CX-301 or TW-1, citric acid: 0.2～0.25%, 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. clean viscous acid for acid fracturing of carbonate reservoir according to claim 1 and 2 characterized by further comprising:
Tetraethylene pentamine polyoxyethylene polyoxypropylene ether: 0～0.3%;
N, N-di-sec-butyl-p-phenyl enediamine: 0～0.06%.
4. clean viscous acid for acid fracturing of carbonate reservoir according to claim 3 is characterized in that the preparation method comprises following operation steps:
A, in container a, add to calculate the water of required weight;
B, add salicylic acid sodium in container b, the water compound concentration is that 10% salicylic acid sodium water solution is for subsequent use among the extracting container a;
C, in container a, add in proportion hydrochloric acid, be made into hydrochloric acid soln; Then take by weighing in proportion Fe stabilizer and add in the acid solution, stir; Get in proportion again cetyl trimethylammonium bromide, 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, tetraethylene pentamine 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 clean viscous acid for acid fracturing of carbonate reservoir.
Priority Applications (1)
| 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 |
Applications Claiming Priority (1)
| 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 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102453480A CN102453480A (en) | 2012-05-16 |
| CN102453480B true CN102453480B (en) | 2013-05-01 |
Family
ID=46037186
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201010522185 Active CN102453480B (en) | 2010-10-22 | 2010-10-22 | Clean viscous acid for acid fracturing of carbonate reservoir |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102453480B (en) |
Families Citing this family (17)
| 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 |
| 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 |
| 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 |
| 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 |
| CA2984811C (en) * | 2015-05-08 | 2018-10-23 | China National Petroleum Corporation Chuanqing Drilling Engineering Company Limited Changqing Downhole Technology Company | Recoverable instant thickening acid and its reusing method |
| 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 |
| CN106947457A (en) | 2017-04-06 | 2017-07-14 | 中国石油大学(华东) | A kind of polymer acid liquor thickener |
| 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 |
| 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 |
| CN108559480B (en) | 2018-04-28 | 2021-01-29 | 中国石油天然气股份有限公司 | Chelating agent for acidizing and injection-increasing construction of reservoir stratum and preparation method and application thereof |
| CN108590717B (en) * | 2018-05-10 | 2019-11-26 | 中国矿业大学 | The water-retaining method of chemical tendering carbonate rock promotion mining induced fissure selfreparing |
| 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 |
| 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 |
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 |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102453480A (en) | 2012-05-16 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102453480B (en) | Clean viscous acid for acid fracturing of carbonate reservoir | |
| CN102939354A (en) | Surfactant-less alkaline-polymer formulations for recovering reactive crude oil | |
| CN101328798B (en) | Method for exploiting thick oil | |
| CN101805597B (en) | Solid corrosion and scale inhibitor for oil field | |
| CN100513512C (en) | Corrosion-inhibition scale-inhibition paraffin-removal viscosity reducer and preparation method thereof | |
| CN102762688A (en) | Process of using hard brine at high alkalinity for enhanced oil recovery (eor) applications | |
| CN103865513B (en) | A kind of surfactant self-priming is combined shale hydrofrac fluid and preparation method and application | |
| RU2011144863A (en) | VISCOELASTIC SURFACE-ACTIVE SUBSTANCES AND METHODS FOR PRODUCING AND USING THEM | |
| EP2964716A1 (en) | Branched viscoelastic surfactant for high-temperature acidizing | |
| CN109609110B (en) | CO (carbon monoxide)2Corrosion and scale inhibitor for oil displacement, preparation method and use method thereof | |
| CN108018559B (en) | A kind of Compositional type corrosion inhibitor for oil field and preparation method thereof | |
| CN101838527A (en) | Corrosion inhibition foaming agent for increasing yield of oil and natural gas | |
| WO2014137495A1 (en) | Cationic viscoelastic surfactant with non-cationic corrosion inhibitor and organic anion for acidizing | |
| CN103911139B (en) | Capsule parcel solid hydrochloric acid preparation method | |
| CN108531156B (en) | Thickened oil dispersion oil production auxiliary agent suitable for offshore oil field | |
| CN105542732B (en) | Self-generated foam micelle acid solution for water injection well | |
| CN101781767A (en) | Preparation method of solid corrosion and scale inhibiting rod for oil field | |
| CN105298458A (en) | Method for relieving downward lag of polymer flooding production well sucker rod | |
| CN105542738A (en) | Microemulsion corrosion inhibitor and preparation method thereof | |
| CN101570687B (en) | Oil field water injection resistance reducing agent and application thereof | |
| CN102559167A (en) | Novel preparation method of schiff base oil well acidification corrosion inhibitor and application of preparation method | |
| CN103951593B (en) | Warm clean fracturing fluid viscosifying agent synthetic method and application thereof in one | |
| CN105130829A (en) | Preparation method of high-efficiency high-temperature acidizing slow-released agent | |
| CN100526416C (en) | Thick oil emulsifying viscosity reducer and preparation method thereof | |
| CN104119850A (en) | Corrosion inhibitor used in saline medium, and preparation method thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |