CN1205299C - Composite multifunctional chemical unblocking agent - Google Patents
Composite multifunctional chemical unblocking agent Download PDFInfo
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- CN1205299C CN1205299C CN 03129868 CN03129868A CN1205299C CN 1205299 C CN1205299 C CN 1205299C CN 03129868 CN03129868 CN 03129868 CN 03129868 A CN03129868 A CN 03129868A CN 1205299 C CN1205299 C CN 1205299C
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Abstract
The present invention relates to a composite multifunctional chemical blocking remover which is composed of an organic multifunctional blocking remover, an inorganic multifunctional blocking remover and a composite synergistic agent. The main components of the present invention comprise aromatic hydrocarbon organic solvents of C7 to C10, a polyoxyethylene ether surfactant, an oil-soluble water dispersion polyether demulsifying agent, a T penetrating agent, a polyether wetting agent, a mutual solvent, an insoluble scale converter, organic/inorganic composite acid, a cation polymer clay stabilizer, a water-soluble polyether demulsifying agent, a ferric ion stabilizer, a polyether wetting improver, a corrosion auxiliary agent, a speed reduction corrosion inhibitor, a cation polymer sand stabilizer, etc. A water solution containing 50 to 100% of organic multifunctional blocking remover, a water solution containing 5 to 35% of inorganic multifunctional blocking remover and a water solution containing 25 to 35% of composite synergistic agent are injected into oil and water wells according to the use method of a usual blocking remover to treat the oil and water wells, and respective effects and the mutual synergistic action of the water solutions are exerted. The blocking remover has an excellent speed reduction effect which is as 10 times as the speed reduction effect of the conventional earth acid.
Description
Technical field
The invention belongs to chemicals, the agent of particularly a kind of composite multifunction chemical plugging removal.
Background technology
Chemical plugging removal is one of important measures of oil well production increasing, intensified injection of wells, and the deep is handled, improved plugging removal effect is the important topic of chemical plugging removal Study on Process.All there is limitation in various degree in conventional chemical plugging removal Technology, studies show that, chemical plugging removal not only will effectively be removed oil reservoir and stop up because of the complexity that a variety of causes causes, and reservoir produces secondary sedimentation after will preventing de-plugging, destroy ma and the obstruction injury that causes and other multiple injury etc. as susceptibility injury, the excessive corrosion in rock ore deposit, the plugging removal effect of competence exertion the best.At present, there are problems such as the nearly excessive corrosion in well oil reservoir rock ore deposit, deep poor processing effect and secondary sedimentation in conventional acidification to dispel block, has seriously influenced the acidification to dispel block effect.
Summary of the invention
In order to solve deficiency of the prior art, the present invention has developed the agent of a kind of composite multifunction chemical plugging removal, organic and inorganic complicated stopping state at oil well and well designs, and it is by having machine multifunctional unblocking agent (following can abbreviate BHJ-A as), inorganic multifunctional unblocking agent (following can abbreviate BHJ-B as) and composite synergist (following can abbreviate BHJ-C as) to form.
Concrete component and content following (following ratio all is weight percentage):
BHJ-A has the machine multifunctional unblocking agent:
Carbon 7～10 aromatic hydrocarbon organic solvent: 65～80%
Polyethenoxy ether class tensio-active agent: 1～10%
Oil soluble water-dispersion polyethers emulsion splitter: 1～5%
The T permeate agent; 1～5%
Polyethers wetting agent: 1～5%
Mutual solvent: 5～10%
There is the preparation method of machine multifunctional unblocking agent to be: under 10-50 ℃ and condition of normal pressure, in stirred pot, to add carbon 7～10 aromatic hydrocarbon organic solvent, polyethenoxy ether class tensio-active agent in proportion successively, oil soluble water-dispersion polyethers emulsion splitter, the T permeate agent, polyethers wetting agent, mutual solvent.Stirred 1-3 hour, the back got final product in aging 10-15 hour.
BHJ-B inorganic multifunctional unblocking agent:
30% technical hydrochloric acid: 15～45%;
40～50% fluoroboric acid: 35～65%;
Indissoluble dirt transforming agent (sulfate scale complexing dispersion agent): 1～5%;
Cationic polymers class clay stabilizer: 1～5%;
Water-soluble poly ethers emulsion splitter: 1～5%;
Slow inhibiter: 5～10%;
Fe stabilizer: 1～6%;
Polyethers wetting agent activator: 1～5%;
The preparation method of inorganic multifunctional unblocking agent is: under 10-50 ℃ and condition of normal pressure, add slow inhibiter in proportion successively in stirred pot, Fe stabilizer, acid solution, the wetting activator of polyethers, cationic polymers class sand stabilization agent.Stirred 1-4 hour, the back got final product in aging 10-15 hour.
The BHJ-C composite synergist:
30% technical hydrochloric acid: 45～70%;
98% industrial acetic: 15～45%;
Slow inhibiter: 5～10%;
The wetting activator of polyethers: 1～5%;
Cationic polymers class sand stabilization agent (oil reservoir skeleton stabilizer): 1～5%;
Fe stabilizer (anti-secondary sedimentation agent): 1～6%;
The preparation method of composite synergist is: under room temperature and condition of normal pressure, add slow inhibiter, Fe stabilizer in proportion successively in stirred pot, efficient corrosion agent, the wetting activator of polyethers, cationic polymers class sand stabilization agent, the efficient cleanup additive of FC-, efficient corrosion agent.Stirred 1-4 hour, the back got final product in aging 10-15 hour.
Wherein,
Carbon 7～10 aromatic hydrocarbon organic solvent comprise carbon 7 aromatic hydrocarbon, carbon 8 aromatic hydrocarbon, carbon 9 aromatic hydrocarbon and carbon 10 aromatic hydrocarbon; The polyethenoxy ether class tensio-active agent comprises Nonyl pheno (15) ether, Nonyl pheno (10) ether etc.;
Oil soluble water-dispersion polyethers emulsion splitter comprises the oil soluble water-dispersion polyethers emulsion splitter BH-01 of Bohai petroleum oil production engineering service company, BH-04 and BH-09 etc.; This emulsion splitter is sold on market.
The T permeate agent comprises polyoxyethylated alkyl alcohol-8, polyoxyethylated alkyl alcohol-20 etc.;
The polyethers wetting agent comprises polyxyethylated toluene phenolic ether-45, polyxyethylated toluene phenolic ether-2, polyxyethylated alcohol-10, polyxyethylated alcohol-7, polyxyethylated alcohol-8 etc.;
Mutual solvent comprises ethylene glycol monobutyl ether, Diethylene Glycol butyl ether etc.;
Indissoluble dirt transforming agent comprises fluoroboric acid, hydrofluoric acid, diethylene triamine pentacetic acid (DTPA), organic polyamine complexing agent etc.;
Cationic polymers class clay stabilizer comprises polyamine class and polyquaternary amine etc.;
Water-soluble poly ethers emulsion splitter comprises the Bohai Sea emulsion splitter BH-02 of Bohai petroleum oil production engineering service company, BH-12, BH-169, BX-1 etc.; This emulsion splitter is sold on market.
Fe stabilizer comprises SODIUM ISOVITAMIN C, EDTA tetra-na salt and nitrilotriacetic acid etc.;
The wetting activator of polyethers comprises polyethenoxy alkylphenols-4, polyethenoxy alkylphenols-10, and polyoxyethylene-1,
1-dialkyl group propine alcohol ether and polyethenoxy alkylphenols-7 etc.;
The corrosion auxiliary agent comprises polyoxyethylated alkyl alcohol-20, polyoxyethylated alkyl alcohol-15;
Slow inhibiter comprises the slow inhibiter of amphoteric imidazoline class, Virahol and methyl alcohol etc.; Cationic polymers class sand stabilization agent comprises two (polyoxyethylene groups) alkyl ammomium chlorides and positively charged ion polyacrylamide etc.;
Above-mentioned three doses of working concentrations in application are:
The machine multifunctional unblocking agent is arranged: 50～100% aqueous solution;
Inorganic multifunctional unblocking agent: 25～35% aqueous solution;
Composite synergist: 25～35% aqueous solution.
Using method is according to the using method of common unblocking agent.Can be that three doses are the order of BHJ-A/BHJ-B/BHJ-C by the design segments plug structure and inject the handling oil well in the concentration range of afore mentioned rules, bring into play its effect and synergism mutually separately, reach best plugging removal effect.
The present invention has significant effect, is in particular in:
1, the slow effect of serial acidification blocking remover that the present invention developed is good, is 10 times of regular mud acid;
2, the serial acidification blocking remover that the present invention developed is to organic/inorganic dirt corrosion rate height, and the integrative blockage relieving performance is good, and has certain indissoluble dirt conversion capability, and is very effective to the plug removal in oil and water well operation;
3, the serial acidification blocking remover over-all properties that the present invention developed is good, can effectively protect oil reservoir, reduces the secondary injury to oil reservoir;
4, the on-the-spot preparation of the acidification blocking remover of being developed is simple, and other treatment agent needn't be added in the scene, only needs thin up to become design concentration to use.
5, this Technology be particularly suitable for reservoir clay content height, loose cementation, be easy to shake out, acid-sensitive, water sensitivity sandstone oil reservoir deep chemical plugging removal.
For this reason, we have researched and developed the composite multifunction unblocking agent, can solve above-mentioned technological difficulties well, are used widely on the oil and water well in a plurality of oil fields, the Bohai Sea, have obtained significant increasing yield and injection effect.
Embodiment
Embodiment 1:
(1) BHJ-A has the machine multifunctional unblocking agent:
Carbon 9 aromatic hydrocarbon: 70%
Nonyl pheno (15) ether: 5%
Bohai petroleum emulsion splitter BH-01:2%
Polyoxyethylated alkyl alcohol-8:3%
Polyoxyethylated alkyl alcohol-10:5%
Ethylene glycol monobutyl ether: 8%
Polyethenoxy alkylphenols-7:7%;
(2) BHJ-B inorganic multifunctional unblocking agent:
30% technical hydrochloric acid: 20%
40% fluoroboric acid: 60%;
Diethylene triamine pentacetic acid (DTPA): 4%
Bohai petroleum BX-1 emulsion splitter: 3%
The slow inhibiter of amphoteric imidazoline class: 6%
Poly-quaternary amine: 3%
SODIUM ISOVITAMIN C: 3%
Polyoxyethylated alkyl alcohol-8:1%;
(3) BHJ-C composite multifunction synergistic agent:
30% technical hydrochloric acid: 60%
98% industrial acetic: 20%;
The slow inhibiter of amphoteric imidazoline class: 6%;
Polyoxyethylated alkyl alcohol-8:3%;
Cationic PAM: 5%;
SODIUM ISOVITAMIN C: 6%.
Embodiment 2:
(1) BHJ-A has the machine multifunctional unblocking agent:
Carbon 8 aromatic hydrocarbon: 75%
Nonyl pheno (10) ether: 8%
Bohai petroleum emulsion splitter BH-09:1%
Polyoxyethylated alkyl alcohol-20:3%
Polyoxyethylated alkyl alcohol-7:4%
Ethylene glycol monobutyl ether: 6%
Polyethenoxy alkylphenols-7:4%
BHJ-B inorganic multifunctional unblocking agent:
30% technical hydrochloric acid: 25%
50% fluoroboric acid: 55%;
The slow inhibiter of amphoteric imidazoline class: 6%;
Organic polyamine complexing agent: 4%
Bohai petroleum BH-12 emulsion splitter: 3%
Cationic polyacrylamide: 3%
Nitrilotriacetic acid: 3%
Polyoxyethylated alkyl alcohol-8:1%.
(2) BHJ-C composite multifunction synergistic agent:
30% technical hydrochloric acid: 50%
98% industrial acetic: 35%;
The slow inhibiter of amphoteric imidazoline class: 6%;
Polyoxyethylated alkyl alcohol-8:4%;
Cationic PAM: 2%;
Nitrilotriacetic acid: 3%.
Embodiment 3
(1) BHJ-A has the machine multifunctional unblocking agent:
Carbon 10 aromatic hydrocarbon: 65%
Nonyl pheno (10) ether: 10%
Polyxyethylated phenol formaldehyde resin (BH-01): 2%
Polyoxyethylated alkyl alcohol-20:8%
Polyoxyethylated alkyl alcohol-8:5%
Diethylene Glycol butyl ether: 10%
(2) BHJ-B inorganic multifunctional unblocking agent.
30% technical hydrochloric acid: 33%
45% fluoroboric acid: 38%;
The slow inhibiter of amphoteric imidazoline class: 6%;
Organic polyamine complexing agent: 4%
Bohai petroleum BH-12 emulsion splitter: 5%
Cationic polyacrylamide: 3%
Nitrilotriacetic acid: 6%
Polyoxyethylated alkyl alcohol-8:5%.
(3) BHJ-C composite multifunction synergistic agent:
30% technical hydrochloric acid: 45%
98% industrial acetic: 40%;
The slow inhibiter of amphoteric imidazoline class: 6%;
Polyoxyethylated alkyl alcohol-8:4%;
Cationic PAM: 2%;
Nitrilotriacetic acid: 3%.
Embodiment 4
(1) BHJ-A has the machine multifunctional unblocking agent:
Carbon 7 aromatic hydrocarbon: 80%
Nonyl pheno (10) ether: 1%
Polyxyethylated phenol formaldehyde resin (BH-01): 5%
Polyoxyethylated alkyl alcohol-20:5%
Polyoxyethylated alkyl alcohol-8:4%
Diethylene Glycol butyl ether: 5%
(2) BHJ-B inorganic multifunctional unblocking agent:
30% technical hydrochloric acid: 15%
43% fluoroboric acid: 65%;
The slow inhibiter of amphoteric imidazoline class: 10%;
Organic polyamine complexing agent: 3%
Bohai petroleum BH-12 emulsion splitter: 1%
Cationic polyacrylamide: 3%
Nitrilotriacetic acid: 1%
Polyoxyethylated alkyl alcohol-8:2%.
(3) BHJ-C composite synergist:
30% technical hydrochloric acid: 70%
98% industrial acetic: 15%;
The slow inhibiter of amphoteric imidazoline class: 5%;
Polyoxyethylated alkyl alcohol-8:5%;
Cationic PAM: 3%;
Nitrilotriacetic acid: 2%.
Embodiment 5
(1) BHJ-A has the machine multifunctional unblocking agent:
Carbon 9 aromatic hydrocarbon: 80%
Nonyl pheno (10) ether: 10%
Polyxyethylated phenol formaldehyde resin (BH-01): 3%
Polyoxyethylated alkyl alcohol-20:1%
Polyoxyethylated alkyl alcohol-8:1%
Diethylene Glycol butyl ether: 5%
(2) BHJ-B inorganic multifunctional unblocking agent:
30% technical hydrochloric acid: 45%
48% fluoroboric acid: 35%;
The slow inhibiter of amphoteric imidazoline class: 5%;
Organic polyamine complexing agent: 5%
Bohai petroleum BH-12 emulsion splitter: 1%
Cationic polyacrylamide: 3%
Nitrilotriacetic acid: 1%
Polyoxyethylated alkyl alcohol-8:5%.
(3) BHJ-C composite synergist:
30% technical hydrochloric acid: 40%
98% industrial acetic: 45%;
The slow inhibiter of amphoteric imidazoline class: 10%;
Polyoxyethylated alkyl alcohol-8:1%;
Cationic PAM: 1%;
Nitrilotriacetic acid: 3%.
Construction process only needs to inject BHJ-A respectively according to the design working concentration the machine multifunctional unblocking agent, BHJ-B inorganic multifunctional unblocking agent, and BHJ-C composite multifunction synergistic agent gets final product.
Claims (3)
1. composite multifunction chemical plugging removal agent, it is by being made up of machine multifunctional unblocking agent, inorganic multifunctional unblocking agent and composite synergist: concrete component and content are as follows, and following ratio all is weight percentage:
(1) the machine multifunctional unblocking agent is arranged:
Carbon 7～10 aromatic hydrocarbon organic solvent: 65～80%
Polyethenoxy ether class tensio-active agent: 1～10%
Oil soluble water-dispersion polyethers emulsion splitter: 1～5%
T permeate agent: 1～5%
Polyethers wetting agent: 1～5%
Mutual solvent: 5～10%
(2) inorganic multifunctional unblocking agent:
30% technical hydrochloric acid: 15～45%;
40～50% fluoroboric acid: 35～65%;
Indissoluble dirt transforming agent: 1～5%;
Cationic polymers class clay stabilizer: 1～5%;
Water-soluble poly ethers emulsion splitter: 1～5%;
Slow inhibiter: 5～10%;
Fe stabilizer: 1～6%;
Polyethers wetting agent activator: 1～5%;
(3) composite synergist:
30% technical hydrochloric acid: 45～70%;
98% industrial acetic: 15～45%;
Slow inhibiter: 5～10%;
The wetting activator of polyethers: 1～5%;
Cationic polymers class sand stabilization agent: 1～5%;
Fe stabilizer: 1～6%;
Wherein:
Above-mentioned oil soluble water-dispersion polyethers emulsion splitter is the oil soluble water-dispersion polyethers emulsion splitter BH-01 of Bohai petroleum oil production engineering service company, BH-04 or BH-09;
Above-mentioned T permeate agent is polyoxyethylated alkyl alcohol-8 or polyoxyethylated alkyl alcohol-20;
Above-mentioned polyethers wetting agent is polyxyethylated toluene phenolic ether-45, polyxyethylated toluene phenolic ether-2, polyxyethylated alcohol-10, polyxyethylated alcohol-7 or polyxyethylated alcohol-8;
Above-mentioned indissoluble dirt transforming agent is a fluoroboric acid, hydrofluoric acid, diethylene triamine pentacetic acid (DTPA) or organic polyamine complexing agent;
Above-mentioned mutual solvent is ethylene glycol monobutyl ether or Diethylene Glycol butyl ether;
Above-mentioned cationic polymers class clay stabilizer is polyamine class or polyquaternary amine;
Above-mentioned water-soluble poly ethers emulsion splitter is the Bohai Sea emulsion splitter BH-02 of Bohai petroleum oil production engineering service company, BH-12, BH-169 or BX-1;
The wetting activator of above-mentioned polyethers is a polyethenoxy alkylphenols-4, polyethenoxy alkylphenols-10, polyoxyethylene-1,1-dialkyl group propine alcohol ether or polyethenoxy alkylphenols-7;
Above-mentioned slow inhibiter is the slow inhibiter of amphoteric imidazoline class, Virahol or methyl alcohol;
Above-mentioned cationic polymers class sand stabilization agent is two (polyoxyethylene groups) alkyl ammomium chloride or cationic polyacrylamides.
2. composite multifunction chemical plugging removal as claimed in claim 1 agent is characterized in that describedly having the working concentration of machine multifunctional unblocking agent, inorganic multifunctional unblocking agent and composite synergist to be:
The machine multifunctional unblocking agent is arranged: 50～100% aqueous solution;
Inorganic multifunctional unblocking agent: 25～35% aqueous solution;
Composite synergist: 25～35% aqueous solution.
3. composite multifunction chemical plugging removal agent according to claim 1 is characterized in that described polyethenoxy ether class tensio-active agent is Nonyl pheno (15) ether or Nonyl pheno (10) ether.
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| CN 03129868 CN1205299C (en) | 2003-05-21 | 2003-05-21 | Composite multifunctional chemical unblocking agent |
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| CN 03129868 CN1205299C (en) | 2003-05-21 | 2003-05-21 | Composite multifunctional chemical unblocking agent |
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| CN1205299C true CN1205299C (en) | 2005-06-08 |
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- 2003-05-21 CN CN 03129868 patent/CN1205299C/en not_active Expired - Fee Related
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| Publication number | Publication date |
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| CN1458221A (en) | 2003-11-26 |
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