CN106318364A - Compound gel breaker and preparing method thereof - Google Patents
Compound gel breaker and preparing method thereof Download PDFInfo
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- CN106318364A CN106318364A CN201610709791.4A CN201610709791A CN106318364A CN 106318364 A CN106318364 A CN 106318364A CN 201610709791 A CN201610709791 A CN 201610709791A CN 106318364 A CN106318364 A CN 106318364A
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- 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
- C09K8/66—Compositions based on water or polar solvents
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- 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
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- C09K8/86—Compositions based on water or polar solvents containing organic compounds
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- C09K8/60—Compositions for stimulating production by acting on the underground formation
- C09K8/84—Compositions based on water or polar solvents
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Abstract
The invention relates to processing technology field on oil field fracturing return liquid, particularly relates to a compound gel breaker and preparing method thereof. The composite gel breaker consists of, by weight, the following components: 10-15 parts of persulfide chemical gel breaker, 6-10 parts of cellulose glycoside bond specific hydrolase biological gel breaker, 1-3 parts of polyol compound initiator, 80-100 parts of deionized water. The persulfide chemical gel breaker consists of ammonium persulfate, potassium persulfate and ammonium sodium sulfate, the quality ratio is 1:2 - 3:2 - 3; polyol compound initiator comprises diethanolamine, triethanolamine and methyl diethanolamine, the quality ratio is 1:2 - 3:1 - 2. The invention has the advantages of high gel breaking speed and high gel breaking water yield, letting the water, oil and suspended substance easy to be separated, and improves the treatment effect of the subsequent flocculation, sedimentation and filtration process for fracturing return liquid. Therefore, the invention can be widely applied in the technical field of the fracturing return liquid gel breaking treatment.
Description
Technical field
The present invention relates to oil field compression fracture and return the processing technology field of discharge opeing, be combined gel breaker and preparation thereof particularly to one
Method.
Technical background
Pressure break is one of major measure of well production increment, and pressing crack construction process utilizes high-pressure pump group by high viscosity fracturing fluid
Press-in stratum, makes seam and brings proppant in, after pressing crack construction terminates, pressure break breaking glue solution, does not breaks glue fracturing fluid thoroughly and residue
Original gelatin (base fluid) returns to ground from pit shaft.This part returns discharge opeing complicated component, due to containing after breaking gel and the melon that do not breaks glue
Glue/frozen glue, high molecular polymer and petroleum-type, iron ion etc., cause returning discharge opeing viscosity height, emulsifying seriously, have impact on pressure break and return
During the process such as discharge opeing flocculation, sedimentation, the diffusion of medicament, causes response time length, poor processing effect, therefore, and fracturing outlet liquid
Before carrying out subsequent treatment, must first carry out brokenly glue and process.
Gel breaker chief destructive thickening agent molecular chain structure so that it is viscosity reduction, aquation, it is achieved broken glue.Mainly there are heating power, machine
The approach such as tool, chemistry, biology.Conventional is biological and chemical method, and chemical method mainly uses potassium peroxydisulfate, Ammonium Persulfate 98.5 etc. to aoxidize
Agent, during temperature height, peroxide is decomposed into high mars free radical, destroys polymer backbone conformation, reaches brokenly glue purpose.Temperature is more
Height, oxidant reactivity is the strongest, but when temperature is less than 50 DEG C, oxidant breaks glue effect and is decreased obviously.Enzyme gel breaker
Being a kind of environmental type gel breaker, have clear improvement to reducing broken glue residue, but it is slow to there is broken glue speed, broken glue is the most thorough
The end, do not reach the requirement of rapid break.
Summary of the invention
The present invention is directed to existing fracturing outlet liquid and break the problem that glue process exists, it is provided that a kind of compound gel breaker and preparation thereof
Method, in gel breaker, biological enzyme glycosidic bond breaks to form small molecular sugar, and initiator therein is by reducing chain-breaking reaction
Activation energy, while making chemical gel breaker disconnect main chain under cryogenic, also disconnects side chain, reaches thoroughly to break the purpose of glue.
Thus improve the follow-up flocculation of fracturing outlet liquid, sedimentation and the treatment effect of filtration treatment technique.
The invention provides a kind of compound gel breaker, compound gel breaker described by weight is composed of the following components: mistake
Sulfide chemical gel breaker 10～15, cellulose glycoside bond specific hydrolase enzyme biology gel breaker 6～10, multicomponent alcoholics compound
Initiator 1～3, deionized water 80～100.
Preferably, described compound gel breaker is the most composed of the following components: persulfide chemical gel breaker 12, fibre
Dimension element glycoside bond specific hydrolase enzyme biology gel breaker 8, multicomponent alcoholics compound initiator 2, deionized water 90.
Wherein, described persulfide chemical gel breaker is made up of Ammonium persulfate., potassium peroxydisulfate and Ammonium persulfate. sodium, quality
Ratio is 1:2～3:2～3；Described multicomponent alcoholics compound initiator is by diethanolamine, triethanolamine and methyl diethanolamine
Composition, mass ratio is 1:2～3:1～2.
The preparation method of above-mentioned compound gel breaker, specifically includes following steps:
(1) being slowly added in deionized water by persulfide chemical gel breaker, heat while stirring, stir speed (S.S.) is 60
～80 revs/min, heating-up temperature is 30～35 DEG C, is warming up to 35～40 DEG C after constant temperature 2～3h, naturally cools to after constant temperature 2～3h
Room temperature, obtains persulfide solution；
(2) adding in above-mentioned persulfide solution by cellulose glycoside bond specific hydrolase enzyme biology gel breaker, limit is stirred
Limit is heated, and stir speed (S.S.) is 80～100 revs/min, and heating-up temperature is 40～45 DEG C, naturally cools to room temperature, room after constant temperature 3～5h
After temperature cooling 8～10h, heating while stirring, stir speed (S.S.) is 150～200 revs/min, and heating-up temperature is 50～60 DEG C, constant temperature 3
～after 5h, naturally cool to room temperature, obtain mixed solution；
(3) being added in above-mentioned mixed solution by multicomponent alcoholics compound initiator, heat while stirring, stir speed (S.S.) is
200～300 revs/min, heating-up temperature is 50～60 DEG C, is cooled to 30～40 DEG C after constant temperature 2～4h, constant temperature 3～5h natural cooling
To room temperature, obtain product.
` preferably, the preparation method of described compound gel breaker, specifically include following steps:
(1) being slowly added in deionized water by persulfide chemical gel breaker, heat while stirring, stir speed (S.S.) is 70
Rev/min, heating-up temperature is 32 DEG C, is warming up to 38 DEG C, naturally cools to room temperature, obtain over cure after constant temperature 2.5h after constant temperature 2.5h
Thing solution；
(2) adding in above-mentioned persulfide solution by cellulose glycoside bond specific hydrolase enzyme biology gel breaker, limit is stirred
Limit is heated, and stir speed (S.S.) is 90 revs/min, and heating-up temperature is 42 DEG C, naturally cools to room temperature after constant temperature 4h, after room temperature cooling 9h,
Heating while stirring, stir speed (S.S.) is 180 revs/min, and heating-up temperature is 55 DEG C, naturally cools to room temperature, mixed after constant temperature 4h
Close solution；
(3) being added in above-mentioned mixed solution by multicomponent alcoholics compound initiator, heat while stirring, stir speed (S.S.) is
250 revs/min, heating-up temperature is 55 DEG C, is cooled to 35 DEG C after constant temperature 3h, and constant temperature 4h naturally cools to room temperature, obtains product.
The present invention has the advantage that and beneficial effect compared with prior art:
(1) compound gel breaker breaks glue speed soon under cryogenic, and fracturing outlet liquid viscosity can be made in 30min to reduce by 90%
Above.
(2) compound gel breaker uses chemical gel breaker to combine with biological gel breaker, can make the plastic in fracturing outlet liquid
Molecular backbone and side chain all rupture, it is achieved thoroughly break glue.
(3) broken glue water rate is high, makes water, petroleum-type, float etc. be easily isolated, the raising follow-up flocculation of fracturing outlet liquid,
The treatment effect of the techniques such as sedimentation, filtration.
Detailed description of the invention
Below in conjunction with specific embodiment, technical scheme is further described:
Embodiment 1
Precise raw material (kg):
(1) persulfide chemical gel breaker
Ammonium persulfate. 2, potassium peroxydisulfate 4 and Ammonium persulfate. sodium 4；
(2) cellulose glycoside bond specific hydrolase enzyme 6
(3) multicomponent alcoholics compound initiator
Diethanolamine 0.2, triethanolamine 0.6 and methyl diethanolamine 0.2
(4) deionized water 80
Preparation method:
(1) Ammonium persulfate. 2kg, potassium peroxydisulfate 4kg and Ammonium persulfate. sodium 4kg are slowly added in deionized water 80kg,
Heating while stirring, stir speed (S.S.) is 60 revs/min, and heating-up temperature is 30 DEG C, is warming up to 35 DEG C after constant temperature 2h, natural after constant temperature 2h
It is cooled to room temperature, obtains persulfide solution；
(2) cellulose glycoside bond specific hydrolase enzyme biology gel breaker 6kg is added in above-mentioned persulfide solution, while stir
Mixing limit heating, stir speed (S.S.) is 80 revs/min, and heating-up temperature is 40 DEG C, naturally cools to room temperature, room temperature cooling 8h after constant temperature 3h
After, heating while stirring, stir speed (S.S.) is 150 revs/min, and heating-up temperature is 50 DEG C, naturally cools to room temperature, obtain after constant temperature 3h
Mixed solution；
(3) diethanolamine 0.2kg, triethanolamine 0.6kg and methyl diethanolamine 0.2kg are added above-mentioned mixed solution
In, heating while stirring, stir speed (S.S.) is 200 revs/min, and heating-up temperature is 50 DEG C, is cooled to 30 DEG C after constant temperature 2h, and constant temperature 3h is certainly
So it is cooled to room temperature, obtains product A1。
Embodiment 2
Precise raw material (kg):
(1) persulfide chemical gel breaker
Ammonium persulfate. 2, potassium peroxydisulfate 5 and Ammonium persulfate. sodium 4；
(2) cellulose glycoside bond specific hydrolase enzyme 7
(3) multicomponent alcoholics compound initiator
Diethanolamine 0.3, triethanolamine 0.6 and methyl diethanolamine 0.6
(4) deionized water 85
Preparation method:
(1) Ammonium persulfate. 2kg, potassium peroxydisulfate 5kg and Ammonium persulfate. sodium 4kg are slowly added in deionized water 85kg,
Heating while stirring, stir speed (S.S.) is 65 revs/min, and heating-up temperature is 31 DEG C, naturally cools to room temperature, obtained after constant temperature 2.2h
Sulfide solution；
(2) cellulose glycoside bond specific hydrolase enzyme biology gel breaker 7kg is added in above-mentioned persulfide solution, while stir
Mixing limit heating, stir speed (S.S.) is 85 revs/min, and heating-up temperature is 41 DEG C, naturally cools to room temperature after constant temperature 3.5h, and room temperature cools down
After 8.5h, heating while stirring, stir speed (S.S.) is 160 revs/min, and heating-up temperature is 52 DEG C, naturally cools to room after constant temperature 3.5h
Temperature, obtains mixed solution；
(3) diethanolamine 0.3kg, triethanolamine 0.6kg and methyl diethanolamine 0.6kg are added above-mentioned mixed solution
In, heating while stirring, stir speed (S.S.) is 220 revs/min, and heating-up temperature is 53 DEG C, is cooled to 33 DEG C, constant temperature after constant temperature 2.5h
3.5h naturally cools to room temperature, obtains product A2。
Embodiment 3
Precise raw material (kg):
(1) persulfide chemical gel breaker
Ammonium persulfate. 2, potassium peroxydisulfate 4 and Ammonium persulfate. sodium 6；
(2) cellulose glycoside bond specific hydrolase enzyme 8
(3) multicomponent alcoholics compound initiator
Diethanolamine 0.5, triethanolamine 1.0 and methyl diethanolamine 0.5
(4) deionized water 90
Preparation method:
(1) Ammonium persulfate. 2kg, potassium peroxydisulfate 4kg and Ammonium persulfate. sodium 6kg are slowly added in deionized water 90kg,
Heating while stirring, stir speed (S.S.) is 70 revs/min, and heating-up temperature is 32 DEG C, is warming up to 38 DEG C, after constant temperature 2.5h after constant temperature 2.5h
Naturally cool to room temperature, obtain persulfide solution；
(2) cellulose glycoside bond specific hydrolase enzyme biology gel breaker 8kg is added in above-mentioned persulfide solution, while stir
Mixing limit heating, stir speed (S.S.) is 90 revs/min, and heating-up temperature is 42 DEG C, naturally cools to room temperature, room temperature cooling 9h after constant temperature 4h
After, heating while stirring, stir speed (S.S.) is 180 revs/min, and heating-up temperature is 55 DEG C, naturally cools to room temperature, obtain after constant temperature 4h
Mixed solution；
(3) diethanolamine 0.5kg, triethanolamine 1.0kg and methyl diethanolamine 0.5kg are added above-mentioned mixed solution
In, heating while stirring, stir speed (S.S.) is 250 revs/min, and heating-up temperature is 55 DEG C, is cooled to 35 DEG C after constant temperature 3h, and constant temperature 4h is certainly
So it is cooled to room temperature, obtains product A3。
Embodiment 4
Precise raw material (kg):
(1) persulfide chemical gel breaker
Ammonium persulfate. 2.0, potassium peroxydisulfate 5.0 and Ammonium persulfate. sodium 6.0；
(2) cellulose glycoside bond specific hydrolase enzyme 8.5
(3) multicomponent alcoholics compound initiator
Diethanolamine 0.5, triethanolamine 1.2 and methyl diethanolamine 0.8
(4) deionized water 92
Preparation method:
(1) Ammonium persulfate. 2.0kg, potassium peroxydisulfate 5.0kg and Ammonium persulfate. sodium 6.0kg are slowly added into deionized water
In 92kg, heating while stirring, stir speed (S.S.) is 75 revs/min, and heating-up temperature is 33 DEG C, is warming up to 39 DEG C after constant temperature 2.6h, permanent
Naturally cool to room temperature after temperature 2.7h, obtain persulfide solution；
(2) cellulose glycoside bond specific hydrolase enzyme biology gel breaker 8.5kg is added in above-mentioned persulfide solution, limit
The heating of stirring limit, stir speed (S.S.) is 95 revs/min, and heating-up temperature is 43 DEG C, naturally cools to room temperature after constant temperature 4.2h, and room temperature cools down
After 9.3h, heating while stirring, stir speed (S.S.) is 185 revs/min, and heating-up temperature is 56 DEG C, naturally cools to room after constant temperature 4.5h
Temperature, obtains mixed solution；
(3) diethanolamine 0.5kg, triethanolamine 1.2kg and methyl diethanolamine 0.8kg are added above-mentioned mixed solution
In, heating while stirring, stir speed (S.S.) is 260 revs/min, and heating-up temperature is 56 DEG C, is cooled to 37 DEG C, constant temperature after constant temperature 3.4h
4.2h naturally cools to room temperature, obtains product A4。
Embodiment 5
Precise raw material (kg):
(1) persulfide chemical gel breaker
Ammonium persulfate. 2.5, potassium peroxydisulfate 6.0 and Ammonium persulfate. sodium 5.5；
(2) cellulose glycoside bond specific hydrolase enzyme 9
(3) multicomponent alcoholics compound initiator
Diethanolamine 0.5, triethanolamine 1.5 and methyl diethanolamine 0.8
(4) deionized water 96
Preparation method:
(1) Ammonium persulfate. 2.5kg, potassium peroxydisulfate 6.0kg and Ammonium persulfate. sodium 5.5kg are slowly added into deionized water
In 96kg, heating while stirring, stir speed (S.S.) is 78 revs/min, and heating-up temperature is 34 DEG C, is warming up to 39 DEG C after constant temperature 2.8h, permanent
Naturally cool to room temperature after temperature 2.8h, obtain persulfide solution；
(2) cellulose glycoside bond specific hydrolase enzyme biology gel breaker 9kg is added in above-mentioned persulfide solution, while stir
Mixing limit heating, stir speed (S.S.) is 98 revs/min, and heating-up temperature is 44 DEG C, naturally cools to room temperature after constant temperature 4.8h, and room temperature cools down
After 9.6h, heating while stirring, stir speed (S.S.) is 190 revs/min, and heating-up temperature is 58 DEG C, naturally cools to room after constant temperature 4.8h
Temperature, obtains mixed solution；
(3) diethanolamine 0.5kg, triethanolamine 1.5kg and methyl diethanolamine 0.8kg are added above-mentioned mixed solution
In, heating while stirring, stir speed (S.S.) is 290 revs/min, and heating-up temperature is 58 DEG C, is cooled to 39 DEG C, constant temperature after constant temperature 3.6h
4.6h naturally cools to room temperature, obtains product A5。
Embodiment 6
Precise raw material (kg):
(1) persulfide chemical gel breaker
Ammonium persulfate. 3, potassium peroxydisulfate 6 and Ammonium persulfate. sodium 6；
(2) cellulose glycoside bond specific hydrolase enzyme 10
(3) multicomponent alcoholics compound initiator
Diethanolamine 0.5, triethanolamine 1.5 and methyl diethanolamine 1.0
(4) deionized water 100
Preparation method:
(1) Ammonium persulfate. 3kg, potassium peroxydisulfate 6kg and Ammonium persulfate. sodium 6kg are slowly added in deionized water 100kg,
Heating while stirring, stir speed (S.S.) is 80 revs/min, and heating-up temperature is 35 DEG C, is warming up to 40 DEG C after constant temperature 3h, natural after constant temperature 3h
It is cooled to room temperature, obtains persulfide solution；
(2) cellulose glycoside bond specific hydrolase enzyme biology gel breaker 10kg is added in above-mentioned persulfide solution, limit
The heating of stirring limit, stir speed (S.S.) is 100 revs/min, and heating-up temperature is 45 DEG C, naturally cools to room temperature after constant temperature 5h, and room temperature cools down
After 10h, heating while stirring, stir speed (S.S.) is 200 revs/min, and heating-up temperature is 60 DEG C, naturally cools to room temperature after constant temperature 5h,
Obtain mixed solution；
(3) diethanolamine 0.5kg, triethanolamine 1.5kg and methyl diethanolamine 1.0kg are added above-mentioned mixed solution
In, heating while stirring, stir speed (S.S.) is 300 revs/min, and heating-up temperature is 60 DEG C, is cooled to 40 DEG C after constant temperature 4h, and constant temperature 5h is certainly
So it is cooled to room temperature, obtains product A6。
Embodiment 7
Certain oilfield M12Fracturing outlet liquid, this returns discharge opeing initial viscosity 55.0mPa.s.Take this fracturing outlet liquid to add respectively
Entering above-mentioned prepared compound gel breaker, the weight of compound gel breaker shared part by weight in fracturing outlet liquid is 5.0%, experiment
It is at 30 DEG C, 35 DEG C, broken colloidality energy under the conditions of 40 DEG C.Found out by the experimental result of table 1～3, when raising along with temperature, break glue
Between extend, fracturing outlet liquid viscosity reduces, and broken glue effect is more preferable.Under the conditions of 40 DEG C, during broken glue time 30min, pressure break returns row
Fluid viscosity is down to below 2mPa.s, and viscosity break ratio, more than 96.0%, fully meets follow-up solidifying, filtration treatment requirement, it is possible to achieve pressure
Split the effective process returning discharge opeing.
At 1 30 DEG C of table, compound gel breaker breaks glue performance test
At 2 35 DEG C of table, compound gel breaker breaks glue performance test
At 3 40 DEG C of table, compound gel breaker breaks glue performance test
Embodiment 8
Certain oilfield N31Fracturing outlet liquid, this returns discharge opeing initial viscosity 52.3mPa.s.Take this fracturing outlet liquid to add respectively
Entering above-mentioned prepared compound gel breaker, the weight of compound gel breaker shared part by weight in fracturing outlet liquid is 5.0%, experiment
It is at 30 DEG C, 35 DEG C, broken colloidality energy under the conditions of 40 DEG C.Found out by the experimental result of table 4-6, when raising along with temperature, break glue
Between extend, fracturing outlet liquid viscosity reduces, and broken glue effect is more preferable.Under the conditions of 40 DEG C, during broken glue time 30min, pressure break returns row
Fluid viscosity is down to below 1.5mPa.s, and viscosity break ratio, more than 97.0%, fully meets follow-up solidifying, filtration treatment requirement, it is possible to achieve
Effective process of fracturing outlet liquid.
At 4 30 DEG C of table, compound gel breaker breaks glue performance test
At 5 35 DEG C of table, compound gel breaker breaks glue performance test
At 6 40 DEG C of table, compound gel breaker breaks glue performance test
Claims (5)
1. a compound gel breaker, it is characterised in that described compound gel breaker is the most composed of the following components: over cure
Thing chemical gel breaker 10～15, cellulose glycoside bond specific hydrolase enzyme biology gel breaker 6～10, multicomponent alcoholics compound cause
Agent 1～3, deionized water 80～100；
The preparation method of described compound gel breaker, specifically includes following steps:
(1) being slowly added in deionized water by persulfide chemical gel breaker, heat while stirring, stir speed (S.S.) is 60～80
Rev/min, heating-up temperature is 30～35 DEG C, is warming up to 35～40 DEG C after constant temperature 2～3h, naturally cools to room temperature after constant temperature 2～3h,
Obtain persulfide solution；
(2) cellulose glycoside bond specific hydrolase enzyme biology gel breaker is added in above-mentioned persulfide solution, add while stirring
Heat, stir speed (S.S.) is 80～100 revs/min, and heating-up temperature is 40～45 DEG C, naturally cools to room temperature after constant temperature 3～5h, and room temperature is cold
But after 8～10h, heating while stirring, stir speed (S.S.) is 150～200 revs/min, and heating-up temperature is 50～60 DEG C, constant temperature 3～5h
After naturally cool to room temperature, obtain mixed solution；
(3) multicomponent alcoholics compound initiator is added in above-mentioned mixed solution, heats while stirring, stir speed (S.S.) be 200～
300 revs/min, heating-up temperature is 50～60 DEG C, is cooled to 30～40 DEG C after constant temperature 2～4h, and constant temperature 3～5h naturally cools to room
Temperature, obtains product.
Compound gel breaker the most according to claim 1, it is characterised in that described gel breaker is by weight by following components
Composition: persulfide chemical gel breaker 12, cellulose glycoside bond specific hydrolase enzyme biology gel breaker 8, multicomponent alcoholics compound
Initiator 2, deionized water 90.
Compound gel breaker the most according to claim 1 and 2, it is characterised in that described persulfide chemical gel breaker by
Ammonium persulfate., potassium peroxydisulfate and Ammonium persulfate. sodium composition, mass ratio is 1:2～3:2～3.
Compound gel breaker the most according to claim 3, it is characterised in that described multicomponent alcoholics compound initiator is by two
Ethanolamine, triethanolamine and methyl diethanolamine composition, mass ratio is 1:2～3:1～2.
Compound gel breaker the most according to claim 1, it is characterised in that the preparation method of described compound gel breaker, tool
Body comprises the following steps:
(1) persulfide chemical gel breaker being slowly added in deionized water, heat while stirring, stir speed (S.S.) is 70 turns/
Point, heating-up temperature is 32 DEG C, is warming up to 38 DEG C, naturally cools to room temperature, obtain persulfide after constant temperature 2.5h after constant temperature 2.5h
Solution；
(2) cellulose glycoside bond specific hydrolase enzyme biology gel breaker is added in above-mentioned persulfide solution, add while stirring
Heat, stir speed (S.S.) is 90 revs/min, and heating-up temperature is 42 DEG C, naturally cools to room temperature, after room temperature cooling 9h, while stir after constant temperature 4h
Mixing limit heating, stir speed (S.S.) is 180 revs/min, and heating-up temperature is 55 DEG C, naturally cools to room temperature after constant temperature 4h, obtains mixing molten
Liquid；
(3) multicomponent alcoholics compound initiator being added in above-mentioned mixed solution, heat while stirring, stir speed (S.S.) is 250 turns/
Point, heating-up temperature is 55 DEG C, is cooled to 35 DEG C after constant temperature 3h, and constant temperature 4h naturally cools to room temperature, obtains product.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107338041A (en) * | 2017-08-31 | 2017-11-10 | 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 fracturing fluid gel breaker of Oil/gas Well and application method |
| CN115746821A (en) * | 2022-11-30 | 2023-03-07 | 德蓝(海南)未来之水有限公司 | Fracturing flowback fluid gel breaker and preparation method thereof |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101993688A (en) * | 2009-08-24 | 2011-03-30 | 中国石油天然气股份有限公司 | Low damage fracturing fluid system |
| CN102161536A (en) * | 2010-07-27 | 2011-08-24 | 王兵 | Advanced treatment method for fracturing flow-back fluid |
| CN102286275A (en) * | 2011-07-12 | 2011-12-21 | 西安石油大学 | Biological enzyme pressing crack gum breaker and application thereof |
| CN103721647A (en) * | 2012-10-11 | 2014-04-16 | 李洁 | Polymer preparation technology for petroleum technology gel breaking treatment |
| CN105565449A (en) * | 2014-10-11 | 2016-05-11 | 中国石油化工股份有限公司 | Pretreatment method of flown back fracturing fluid |
-
2016
- 2016-08-23 CN CN201610709791.4A patent/CN106318364A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101993688A (en) * | 2009-08-24 | 2011-03-30 | 中国石油天然气股份有限公司 | Low damage fracturing fluid system |
| CN102161536A (en) * | 2010-07-27 | 2011-08-24 | 王兵 | Advanced treatment method for fracturing flow-back fluid |
| CN102286275A (en) * | 2011-07-12 | 2011-12-21 | 西安石油大学 | Biological enzyme pressing crack gum breaker and application thereof |
| CN103721647A (en) * | 2012-10-11 | 2014-04-16 | 李洁 | Polymer preparation technology for petroleum technology gel breaking treatment |
| CN105565449A (en) * | 2014-10-11 | 2016-05-11 | 中国石油化工股份有限公司 | Pretreatment method of flown back fracturing fluid |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107338041A (en) * | 2017-08-31 | 2017-11-10 | 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 fracturing fluid gel breaker of Oil/gas Well and application method |
| CN115746821A (en) * | 2022-11-30 | 2023-03-07 | 德蓝(海南)未来之水有限公司 | Fracturing flowback fluid gel breaker and preparation method thereof |
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Application publication date: 20170111 |