CN107868660A - A kind of emulsification acid solution of oil-gas reservoir acidifying and preparation method thereof - Google Patents
A kind of emulsification acid solution of oil-gas reservoir acidifying and preparation method thereof Download PDFInfo
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- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K8/00—Compositions for drilling of boreholes or wells; Compositions for treating boreholes or wells, e.g. for completion or for remedial operations
- C09K8/60—Compositions for stimulating production by acting on the underground formation
- C09K8/62—Compositions for forming crevices or fractures
- C09K8/72—Eroding chemicals, e.g. acids
- C09K8/74—Eroding chemicals, e.g. acids combined with additives added for specific purposes
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Abstract
The present invention relates to a kind of emulsification acid solution of oil-gas reservoir acidifying and preparation method thereof, the emulsification acid solution includes oil phase and sour phase, and the oil phase includes diesel oil and emulsifying agent, and the acid mutually includes corrosion inhibiter, ferrous stability, cleanup additive, anti -sludge agent and acid.The emulsification acid solution of the oil-gas reservoir acidifying of the present invention can apply in medium and high temperature carbonate rock, limestone reservoir acid stimulation measure, with low frictional resistance, effectively slow down acid-rock reaction speed, filtrate loss controllability, acid solution deep penetration can effectively be realized, distal end reservoir is linked up, reaches the purpose of deep acidizing transformation.
Description
Technical field
The present invention relates to technical field of petroleum extraction, more particularly, to the emulsification acid solution and its system of a kind of oil-gas reservoir acidifying
Preparation Method.
Background technology
Drilling well, after completion due to the influence of the operations such as mud, well cementation, mud contamination, the cement of pit shaft annex can be caused
Slurry pollution, compacting pollution etc., majority of case needs to carry out acidizing treatment, to release near wellbore zone pollution, obtains natural production capacity.
Meanwhile for old well, as exploitation enters the middle and later periods, near wellbore zone is present due to producing entrained formation rock particle near
Well area results in blockage, and development difficulty is increasing, therefore acid stimulation is an effective measures.But existing acidifying work
Liquid generally existing acid-rock reaction excessive velocities, the characteristics of frictional resistance is big, and leak-off is serious, acid-rock reaction is dense more than 15-30 minute acid solutions
Degree is reduced to 5%, loses acid solution activity, it is difficult to realizes acidifying deep penetration transformation.
The content of the invention
It is an object of the invention to provide a kind of emulsification acid solution of oil-gas reservoir acidifying and preparation method thereof, solves prior art
In be used for the problem of acid liquid reaction excessive velocities of acid-rock reaction, frictional resistance are big and leak-off is serious.
The technical proposal for solving the technical problem of the invention is：A kind of emulsification acid solution of oil-gas reservoir acidifying, comprising
Oil phase and sour phase, the oil phase include diesel oil and emulsifying agent, and the acid is mutually comprising corrosion inhibiter, ferrous stability, cleanup additive, anti-
Slag agent and acid.
In the emulsification acid solution of the present invention, in the oil phase, the volume parts of diesel oil are 92-95 parts, the body of emulsifying agent
Product number is 5-8 parts.
In the emulsification acid solution of the present invention, the emulsifying agent includes DBSA, enuatrol and diesel oil；Described
In emulsifying agent, using diesel oil as solvent, the mass volume ratio shared by DBSA is 20%-55%, shared by enuatrol
Mass volume ratio is 5%-15%.
In the emulsification acid solution of the present invention, in the sour phase, the volume parts of corrosion inhibiter are 0.5-2 parts, and iron ion is steady
The number for determining agent is 0.5-1.5 parts, and the number of cleanup additive is 0.5-1.5 parts, and the number of anti -sludge agent is 0.5-1.5 parts, sour part
Number is 45-61.5 parts.
In the emulsification acid solution of the present invention, the corrosion inhibiter includes oxyquinoline, benzyl chloride and water；In the corrosion inhibiter
In, using water as solvent, the mass volume ratio shared by oxyquinoline is 20%-45%, and the mass volume ratio shared by benzyl chloride is
5%-15%.
In the emulsification acid solution of the present invention, the ferrous stability is disodium ethylene diamine tetraacetate.
In the emulsification acid solution of the present invention, the cleanup additive includes polyether polyols alcohol and water；In the cleanup additive, with water
For solvent, the mass volume ratio shared by PPG is 15%-20%.
In the emulsification acid solution of the present invention, the anti -sludge agent includes ethylene glycol monobutyl ether and water；In the anti -sludge agent, with
Water is solvent, and the mass volume ratio shared by ethylene glycol monobutyl ether is 25%-40%.
In the emulsification acid solution of the present invention, the volume ratio of the oil phase and sour phase is 20：80~40：60.
Present invention also offers the preparation method of above-mentioned emulsification acid solution, comprise the following steps：
S1, diesel oil and emulsifying agent are sufficiently mixed oil phase is made, by corrosion inhibiter, ferrous stability, cleanup additive, anti -sludge agent
It is sufficiently mixed with acid with water and sour phase is made, it is standby；
S2, high-speed stirred more than 30 seconds under the rotating speed more than 5000 revs/min by oil phase and acid phase, obtain emulsifying acid solution.
Implement emulsification acid solution of oil-gas reservoir acidifying of the present invention and preparation method thereof, have the advantages that：This hair
The emulsification acid solution of bright oil-gas reservoir acidifying can apply in medium and high temperature carbonate rock, limestone reservoir acid stimulation measure, tool
There is low frictional resistance, effectively slow down acid-rock reaction speed, filtrate loss controllability, can effectively realize acid solution deep penetration, link up distal end reservoir,
Reach the purpose of deep acidizing transformation.
Embodiment
With reference to embodiment, emulsification acid solution of oil-gas reservoir acidifying of the present invention and preparation method thereof is made furtherly
It is bright：
The technical problem to be solved by the invention is to provide a kind of low frictional resistance of oil-gas reservoir acidifying, efficiently slow oil
Acid emulsifier acid solution is wrapped, the flow conductivity of acid-etched fracture and the penetration range of acid solution can be effectively improved, while there is certain drop
Leak-off acts on.
The emulsification acid solution of the oil-gas reservoir acidifying of the present invention includes oil phase and sour phase, and wherein oil phase includes diesel oil and emulsification
Agent, acid mutually include corrosion inhibiter, ferrous stability, cleanup additive, anti -sludge agent and acid.Diesel oil is preferably No. 0 diesel oil, the impurity of diesel oil
Fewer, obtained emulsification acid solution effect is better, can also be other types of diesel oil etc. in other embodiments.
The volume ratio of oil phase and sour phase is preferably 20：80~40：60, more preferably 30：70.
Wherein, in oil phase, based on 100 parts of volume, the volume parts of diesel oil are 92-95 parts, the volume parts of emulsifying agent
For 5-8 parts.Emulsifying agent includes DBSA, enuatrol and diesel oil；In emulsifying agent, using diesel oil as solvent, that is, bavin is used
Oil prepares emulsifying agent, and the mass volume ratio shared by DBSA is 20%-55%, the mass volume ratio shared by enuatrol
For 5%-15%.
In sour phase, based on 100 parts of volume, the volume parts of corrosion inhibiter are 0.5-2 parts, and the number of ferrous stability is
0.5-1.5 parts, the number of cleanup additive is 0.5-1.5 parts, and the number of anti -sludge agent is 0.5-1.5 parts, and sour number is 45-61.5
Part, surplus is water.
Corrosion inhibiter in sour phase includes oxyquinoline, benzyl chloride and water；In corrosion inhibiter, using water as solvent, i.e., matched somebody with somebody with water
Corrosion inhibiter processed, the mass volume ratio shared by oxyquinoline are 20%-45%, and the mass volume ratio shared by benzyl chloride is 5%-
15%.
Ferrous stability in sour phase is disodium ethylene diamine tetraacetate.
Cleanup additive in sour phase includes polyether polyols alcohol and water；In cleanup additive, using water as solvent, i.e., the row of helping is prepared with water
Agent, the mass volume ratio shared by PPG are 15%-20%.PPG can be polyether triol or PPOX
Glycol etc..
Anti -sludge agent in sour phase includes ethylene glycol monobutyl ether and water；In anti -sludge agent, using water as solvent, i.e., prepared with water anti-
Slag agent, the mass volume ratio shared by ethylene glycol monobutyl ether are 25%-40%.
Acid in sour phase can be the hydrochloric acid of concentrated hydrochloric acid or concentrated nitric acid, preferably concentrated hydrochloric acid, i.e. concentration 31%, refer to industry
Hydrochloric acid, HCl gases is soluble in water, and the concentration of saturation hydrochloric acid solution is 31%.
The preparation method of above-mentioned emulsification acid solution comprises the following steps：
S1, diesel oil and emulsifying agent are sufficiently mixed according to proportioning oil phase is made, by corrosion inhibiter, ferrous stability, the row of helping
Agent, anti -sludge agent and acid are sufficiently mixed according to proportioning with water and sour phase are made, standby；
S2, by oil phase and acid mutually according to proportioning under the rotating speed more than 5000 revs/min high-speed stirred more than 30 seconds, obtain breast
Change acid solution.Preferably, mixing speed is 10000-12000 revs/min, mixing time 2-4min.
The present invention is a kind of a kind of acid emulsification acid solution of oily bag acid type being used in oil-gas reservoir acid stimulation measure, less than ground
On the premise of layer fracture pressure, the acid solution is squeezed into by stratum by ground high pressure pumping-in equipment, it is anti-that sour rock occurs with formation rock
Should, acid solution corrosion stratum, corrosion earthworm hole is formed, so as to reach increase reservoir permeability, draining (gas) passage, be finally reached volume increase
Purpose.The emulsification acid solution has the characteristics of low frictional resistance, low leak-off, because the emulsification acid solution is oily bag acid type emulsification acid solution, with
Tradition acidifying liquid phase ratio, has the advantages of slowing down acid-rock reaction speed well, and acid solution can penetrate distal strata rock, and
Acid solution activity is kept, realizes the deep penetrating purpose of acid solution.The emulsification acid solution is particularly suitable for use in Temperature Deep reservoir, and it is anti-to solve sour rock
Answer the problem of excessive velocities.
The present invention oil-gas reservoir acidifying emulsification acid solution, each liquid particles outer layer is oil phase, when with rock contact
When, the physical reactions that are demulsified first, then acid-rock reaction occurs with rock, it can effectively reduce acid-rock reaction speed；Meanwhile
Its viscosity is far above water, has the effect of certain filtrate reducing.Emulsifying agent in oily foreign minister is changing the same of oleic acid interfacial tension effect
When, certain reduction surface tension effects can be played, therefore, the emulsification acid solution has the characteristics of low frictional resistance.
The emulsification acid fluid system of the present invention enough effectively reduces for a kind of efficiently slow acid fluid system, its oily bag yogurt shape liquid energy
Acid-rock reaction speed, slow rate reaches more than 65% compared with comparable sodium hydrochloric acid, is particularly suitable for high temperature carbonate rock, ash
Rock Reservoir Acidization well stimulation.
The present invention emulsification acid fluid system, have certain filtrate reducing effect, can effectively reduce acid solution in formation pore, split
Leak-off in seam, is effectively increased fluid efficiency.
The emulsification acid fluid system of the present invention, has low friction performance, reaches 60% relative to common acid fluid system resistance-reducing yield
More than, friction drag can be effectively reduced for deep-well, ultradeep well acidizing treatment, reduces well head pressure.
Illustrate below by specific embodiment.
Embodiment 1：
Prepare 100mL emulsification acid solutions：30mL oil phases, wherein 28mL diesel oil are individually prepared, 2mL emulsifying agents, is sufficiently mixed,
It is standby；Individually prepare 70mL acid phases, wherein 42.96mL 31% concentrated hydrochloric acid, 0.8mL corrosion inhibiter, 0.65mL ethylenediamine tetra-acetic acids
Disodium, 0.65mL cleanup additives, 0.65mL anti -sludge agents, 24.29mL water；3min is stirred at 11000 revs/min, is sufficiently mixed 30mL oil
Mutually with 70mL acid phases, 100mL oil bags acid type emulsification acid solution is finally configured to.Wherein, emulsifying agent is using diesel oil as solvent, in diesel oil
The DBSA and 10% enuatrol that mass volume ratio is 35% are added, emulsifying agent is made；Corrosion inhibiter is using water to be molten
Agent, oxyquinoline and 10% benzyl chloride that mass volume ratio is 35% are added in water, corrosion inhibiter is made；Cleanup additive using water as
Solvent, the PPG that mass volume ratio is 18% is added in water, cleanup additive is made；Anti -sludge agent is using water as solvent, in water
It is middle to add the ethylene glycol monobutyl ether that mass volume ratio is 35%, anti -sludge agent is made.
Engineering Projects：
Middle East GA-14 wells, directional well, oil well is developed, construct well section 2794.3m~2815.6m, uses embodiment 1
Emulsify acid solution, infusion acid solution 170m3, operational discharge capacity 1.4-3.5m3/ min, operation pressure 21.43MPa~8.24MPa, after acidifying
Daily output 4500-5500bbl/day.
Embodiment 2：
Prepare 100mL emulsification acid solutions：Individually preparation 30mL oil phases, wherein 27.6mL diesel oil, 2.4mL emulsifying agents, fully
Mixing, it is standby；Individually prepare 70mL acid phases, wherein 42.96mL 31% concentrated hydrochloric acid, 0.35mL corrosion inhibiter, 0.35mL ethylenediamines
Tetraacethyl disodium, 0.35mL cleanup additives, 0.35mL anti -sludge agents, 25.64mL water；4min is stirred at 10000 revs/min, is sufficiently mixed
30mL oil phases and 70mL acid phases, finally it is configured to 100mL oil bags acid type emulsification acid solution.Wherein, emulsifying agent is using diesel oil as solvent,
The DBSA and 5% enuatrol that mass volume ratio is 20% are added in diesel oil, emulsifying agent is made；Corrosion inhibiter is with water
For solvent, oxyquinoline and 5% benzyl chloride that mass volume ratio is 20% are added in water, corrosion inhibiter is made；Cleanup additive with
Water is solvent, and the PPG that mass volume ratio is 15% is added in water, cleanup additive is made；Anti -sludge agent using water as solvent,
The ethylene glycol monobutyl ether that mass volume ratio is 25% is added in water, anti -sludge agent is made.
Engineering Projects：
Middle East GA-18 wells, directional well, oil well is developed, construct well section 2461.2m~2493.6m, uses embodiment 2
Emulsification acid solution, infusion acid solution 220m3, operational discharge capacity 1.2-3.5m3/ min, operation pressure 21.11MPa~7.85MPa, acidifying
Daily output 5500-6000bbl/day afterwards.
Embodiment 3：
Prepare 100mL emulsification acid solutions：Individually preparation 30mL oil phases, wherein 28.5mL diesel oil, 1.5mL emulsifying agents, fully
Mixing, it is standby；Individually prepare 70mL acid phases, wherein 42.96mL 31% concentrated hydrochloric acid, 1.4mL corrosion inhibiter, 1.05mL ethylenediamine tetraacetics
Acetic acid disodium, 1.05mL cleanup additives, 1.05mL anti -sludge agents, 22.49mL water；2min is stirred at 12000 revs/min, is sufficiently mixed
30mL oil phases and 70mL acid phases, finally it is configured to 100mL oil bags acid type emulsification acid solution.Wherein, emulsifying agent is using diesel oil as solvent,
The DBSA and 15% enuatrol that mass volume ratio is 55% are added in diesel oil, emulsifying agent is made；Corrosion inhibiter with
Water is solvent, and oxyquinoline and 15% benzyl chloride that mass volume ratio is 45% are added in water, corrosion inhibiter is made；Cleanup additive
Using water as solvent, the PPG that mass volume ratio is 20% is added in water, cleanup additive is made；Anti -sludge agent is using water to be molten
Agent, the ethylene glycol monobutyl ether that mass volume ratio is 40% is added in water, anti -sludge agent is made.
Engineering Projects：
Middle East GA-18 wells, directional well, oil well is developed, construct well section 2461.2m~2493.6m, uses embodiment 3
Emulsification acid solution, infusion acid solution 220m3, operational discharge capacity 1.24-3.2m3/ min, operation pressure 22.56MPa~7.12MPa, acidifying
Daily output 5700-6100bbl/day afterwards.
Embodiment 4：
Prepare 100mL emulsification acid solutions：20mL oil phases, wherein 19mL diesel oil are individually prepared, 1mL emulsifying agents, is sufficiently mixed,
It is standby；Individually prepare 80mL acid phases, wherein 49.2mL 31% concentrated hydrochloric acid, 1.6mL corrosion inhibiter, 1.2mL ethylenediamine tetra-acetic acids two
Sodium, 1.2mL cleanup additives, 1.2mL anti -sludge agents, 25.6mL water；15000 revs/min stir 3min, be sufficiently mixed 20mL oil phases and
80mL acid phases, finally it is configured to 100mL oil bags acid type emulsification acid solution.Wherein, emulsifying agent adds using diesel oil as solvent in diesel oil
Mass volume ratio is 35% DBSA and 10% enuatrol, and emulsifying agent is made；Corrosion inhibiter using water as solvent,
The oxyquinoline and 10% benzyl chloride that mass volume ratio is 35% are added in water, corrosion inhibiter is made；Cleanup additive using water as solvent,
The PPG that mass volume ratio is 18% is added in water, cleanup additive is made；Anti -sludge agent adds using water as solvent in water
Mass volume ratio is 35% ethylene glycol monobutyl ether, and anti -sludge agent is made.
Engineering Projects：
Middle East GA-14 wells, directional well, oil well is developed, construct well section 2794.3m~2815.6m, uses embodiment 4
Emulsify acid solution, infusion acid solution 170m3, operational discharge capacity 1.5-3.4m3/ min, operation pressure 21.88MPa~8.32MPa, after acidifying
Daily output 5000-5500bbl/day.
Embodiment 5：
Prepare 100mL emulsification acid solutions：Individually preparation 20mL oil phases, wherein 18.4mL diesel oil, 1.6mL emulsifying agents, fully
Mixing, it is standby；Individually prepare 80mL acid phases, wherein 49.2mL 31% concentrated hydrochloric acid, 0.4mL corrosion inhibiter, 0.4mL ethylenediamine tetrems
Acid disodium, 0.4mL cleanup additives, 0.4mL anti -sludge agents, 29.2mL water；3min is stirred at 14000 revs/min, is sufficiently mixed 20mL oil phases
With 80mL acid phases, 100mL oil bags acid type emulsification acid solution is finally configured to.Wherein, emulsifying agent adds using diesel oil as solvent in diesel oil
Enter the DBSA and 10% enuatrol that mass volume ratio is 35%, emulsifying agent is made；Corrosion inhibiter using water as solvent,
The oxyquinoline and 10% benzyl chloride that mass volume ratio is 35% are added in water, corrosion inhibiter is made；Cleanup additive is using water to be molten
Agent, the PPG that mass volume ratio is 18% is added in water, cleanup additive is made；Anti -sludge agent is using water as solvent, in water
The ethylene glycol monobutyl ether that mass volume ratio is 35% is added, anti -sludge agent is made.
Engineering Projects：
Middle East GA-14 wells, directional well, oil well is developed, construct well section 2794.3m~2815.6m, uses embodiment 5
Emulsify acid solution, infusion acid solution 170m3, operational discharge capacity 1.5-3.5m3/ min, operation pressure 20.96MPa~8.02MPa, after acidifying
Daily output 5500-6000bbl/day.
Embodiment 6：
Prepare 100mL emulsification acid solutions：40mL oil phases, wherein 38mL diesel oil are individually prepared, 2mL emulsifying agents, is sufficiently mixed,
It is standby；Individually preparation 60mL acid phases, wherein 27mL 31% concentrated hydrochloric acid, 0.3mL corrosion inhibiter, 0.3mL disodium ethylene diamine tetraacetates,
0.3mL cleanup additives, 0.3mL anti -sludge agents, 31.8mL water；4min is stirred at 11000 revs/min, is sufficiently mixed 40mL oil phases and 60mL
Sour phase, finally it is configured to 100mL oil bags acid type emulsification acid solution.Wherein, emulsifying agent adds quality using diesel oil as solvent in diesel oil
Volume ratio is 20% DBSA and 5% enuatrol, and emulsifying agent is made；Corrosion inhibiter is using water as solvent, in water
The oxyquinoline and 5% benzyl chloride that mass volume ratio is 20% are added, corrosion inhibiter is made；Cleanup additive is using water as solvent, in water
It is middle to add the PPG that mass volume ratio is 15%, cleanup additive is made；Anti -sludge agent adds quality using water as solvent in water
Volume ratio is 25% ethylene glycol monobutyl ether, and anti -sludge agent is made.
Engineering Projects：
Middle East GA-18 wells, directional well, oil well is developed, construct well section 2461.2m~2493.6m, uses embodiment 6
Emulsification acid solution, infusion acid solution 220m3, operational discharge capacity 1.3-3.6m3/ min, operation pressure 21.35MPa~7.65MPa, acidifying
Daily output 5300-6000bbl/day afterwards.
Embodiment 7：
Prepare 100mL emulsification acid solutions：Individually preparation 40mL oil phases, wherein 36.8mL diesel oil, 3.2mL emulsifying agents, fully
Mixing, it is standby；Individually prepare 60mL acid phases, wherein 27mL 31% concentrated hydrochloric acid, 1.2mL corrosion inhibiter, 0.9mL ethylenediamine tetra-acetic acids
Disodium, 0.9mL cleanup additives, 0.9mL anti -sludge agents, 29.1mL water；11000 revs/min stir 4min, be sufficiently mixed 40mL oil phases and
60mL acid phases, finally it is configured to 100mL oil bags acid type emulsification acid solution.Wherein, emulsifying agent adds using diesel oil as solvent in diesel oil
Mass volume ratio is 20% DBSA and 5% enuatrol, and emulsifying agent is made；Corrosion inhibiter using water as solvent,
The oxyquinoline and 5% benzyl chloride that mass volume ratio is 20% are added in water, corrosion inhibiter is made；Cleanup additive using water as solvent,
The PPG that mass volume ratio is 15% is added in water, cleanup additive is made；Anti -sludge agent adds using water as solvent in water
Mass volume ratio is 25% ethylene glycol monobutyl ether, and anti -sludge agent is made.
Engineering Projects：
Middle East GA-18 wells, directional well, oil well is developed, construct well section 2461.2m~2493.6m, uses embodiment 7
Emulsification acid solution, infusion acid solution 220m3, operational discharge capacity 1.2-3.6m3/ min, operation pressure 21.77MPa~8.05MPa, acidifying
Daily output 5500-5800bbl/day afterwards.
Embodiment 8：
Prepare 100mL emulsification acid solutions：30mL oil phases, wherein 28mL diesel oil are individually prepared, 2mL emulsifying agents, is sufficiently mixed,
It is standby；Individually preparation 70mL acid phases, wherein 42.96mL concentrated nitric acid, 0.8mL corrosion inhibiter, 0.65mL disodium ethylene diamine tetraacetates,
0.65mL cleanup additives, 0.65mL anti -sludge agents, 24.29mL water；11000 revs/min stir 3min, be sufficiently mixed 30mL oil phases and
70mL acid phases, finally it is configured to 100mL oil bags acid type emulsification acid solution.Wherein, emulsifying agent adds using diesel oil as solvent in diesel oil
Mass volume ratio is 35% DBSA and 10% enuatrol, and emulsifying agent is made；Corrosion inhibiter using water as solvent,
The oxyquinoline and 10% benzyl chloride that mass volume ratio is 35% are added in water, corrosion inhibiter is made；Cleanup additive using water as solvent,
The PPG that mass volume ratio is 18% is added in water, cleanup additive is made；Anti -sludge agent adds using water as solvent in water
Mass volume ratio is 35% ethylene glycol monobutyl ether, and anti -sludge agent is made.
Engineering Projects：
Middle East GA-14 wells, directional well, oil well is developed, construct well section 2794.3m~2815.6m, uses embodiment 1
Emulsify acid solution, infusion acid solution 170m3, operational discharge capacity 1.2-3.3m3/ min, operation pressure 21.98MPa~8.53MPa, after acidifying
Daily output 4800-5500bbl/day.
It should be appreciated that for those of ordinary skills, can according to the above description be improved or converted,
All these improvement or conversion should all belong within the appended desired protection domain of the present invention.
Claims (10)
- A kind of 1. emulsification acid solution of oil-gas reservoir acidifying, it is characterised in that comprising oil phase and sour phase, the oil phase include diesel oil and Emulsifying agent, the acid mutually include corrosion inhibiter, ferrous stability, cleanup additive, anti -sludge agent and acid.
- 2. emulsification acid solution according to claim 1, it is characterised in that in the oil phase, the volume parts of diesel oil are 92- 95 parts, the volume parts of emulsifying agent are 5-8 parts.
- 3. emulsification acid solution according to claim 2, it is characterised in that the emulsifying agent includes DBSA, oil Sour sodium and diesel oil；In the emulsifying agent, using diesel oil as solvent, the mass volume ratio shared by DBSA is 20%- 55%, the mass volume ratio shared by enuatrol is 5%-15%.
- 4. emulsification acid solution according to claim 1, it is characterised in that in the sour phase, the volume parts of corrosion inhibiter are 0.5-2 parts, the number of ferrous stability is 0.5-1.5 parts, and the number of cleanup additive is 0.5-1.5 parts, and the number of anti -sludge agent is 0.5-1.5 parts, sour number are 45-61.5 parts.
- 5. emulsification acid solution according to claim 4, it is characterised in that the corrosion inhibiter include oxyquinoline, benzyl chloride and Water；In the corrosion inhibiter, using water as solvent, the mass volume ratio shared by oxyquinoline is 20%-45%, shared by benzyl chloride Mass volume ratio is 5%-15%.
- 6. emulsification acid solution according to claim 4, it is characterised in that the ferrous stability is ethylenediamine tetra-acetic acid two Sodium.
- 7. emulsification acid solution according to claim 4, it is characterised in that the cleanup additive includes polyether polyols alcohol and water； In the cleanup additive, using water as solvent, the mass volume ratio shared by PPG is 15%-20%.
- 8. emulsification acid solution according to claim 4, it is characterised in that the anti -sludge agent includes ethylene glycol monobutyl ether and water； In the anti -sludge agent, using water as solvent, the mass volume ratio shared by ethylene glycol monobutyl ether is 25%-40%.
- 9. according to the emulsification acid solution described in claim 1-8 any claims, it is characterised in that the oil phase and the body of sour phase Product is than being 20：80~40：60.
- A kind of 10. preparation method of the emulsification acid solution in claim 1-9 described in any claim, it is characterised in that including Following steps：S1, diesel oil and emulsifying agent are sufficiently mixed oil phase is made, by corrosion inhibiter, ferrous stability, cleanup additive, anti -sludge agent and acid It is sufficiently mixed with water and sour phase is made, it is standby；S2, high-speed stirred more than 30 seconds under the rotating speed more than 5000 revs/min by oil phase and acid phase, obtain emulsifying acid solution.
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| CN109135717A (en) * | 2018-08-22 | 2019-01-04 | 中国石油天然气股份有限公司 | A kind of low viscosity, emulsified acid of low frictional resistance and the preparation method and application thereof |
| CN110643344A (en) * | 2018-06-26 | 2020-01-03 | 中国石油化工股份有限公司 | Double-retarding emulsifying self-generated acid and preparation method thereof |
| CN110846017A (en) * | 2019-11-13 | 2020-02-28 | 深圳市百勤石油技术有限公司 | Acidic clean fracturing fluid for acidizing fracturing production increasing measures of oil and gas reservoir |
| CN115109578A (en) * | 2022-05-12 | 2022-09-27 | 陕西宏丰石油工程技术有限公司 | Emulsified acid liquid for acidification of oil and gas reservoir and production method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110643344A (en) * | 2018-06-26 | 2020-01-03 | 中国石油化工股份有限公司 | Double-retarding emulsifying self-generated acid and preparation method thereof |
| CN110643344B (en) * | 2018-06-26 | 2021-11-02 | 中国石油化工股份有限公司 | Double-retarding emulsifying self-generated acid and preparation method thereof |
| CN109135716A (en) * | 2018-08-22 | 2019-01-04 | 中国石油天然气股份有限公司 | A kind of viscous acid, mix acid liquor system and the method for reducing emulsified acid frictional resistance |
| CN109135717A (en) * | 2018-08-22 | 2019-01-04 | 中国石油天然气股份有限公司 | A kind of low viscosity, emulsified acid of low frictional resistance and the preparation method and application thereof |
| CN110846017A (en) * | 2019-11-13 | 2020-02-28 | 深圳市百勤石油技术有限公司 | Acidic clean fracturing fluid for acidizing fracturing production increasing measures of oil and gas reservoir |
| CN115109578A (en) * | 2022-05-12 | 2022-09-27 | 陕西宏丰石油工程技术有限公司 | Emulsified acid liquid for acidification of oil and gas reservoir and production method thereof |
| CN115109578B (en) * | 2022-05-12 | 2023-07-18 | 陕西宏丰石油工程技术有限公司 | Emulsified acid liquid for acidizing oil and gas reservoir and production method thereof |
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