CN106893574A - A kind of pressure break slow release type biological enzyme breaker and preparation method thereof - Google Patents
A kind of pressure break slow release type biological enzyme breaker and preparation method thereof Download PDFInfo
- Publication number
- CN106893574A CN106893574A CN201710094658.7A CN201710094658A CN106893574A CN 106893574 A CN106893574 A CN 106893574A CN 201710094658 A CN201710094658 A CN 201710094658A CN 106893574 A CN106893574 A CN 106893574A
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- slow release
- release type
- type biological
- biological enzyme
- pressure break
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- C—CHEMISTRY; METALLURGY
- 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
- C09K8/66—Compositions based on water or polar solvents
- C09K8/68—Compositions based on water or polar solvents containing organic compounds
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- C—CHEMISTRY; METALLURGY
- 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
- C09K2208/00—Aspects relating to compositions of drilling or well treatment fluids
- C09K2208/24—Bacteria or enzyme containing gel breakers
Abstract
A kind of pressure break slow release type biological enzyme breaker and preparation method thereof, belongs to oil natural recovery technical field, galactomannans enzyme liquid body, sodium bentonite and beta cyclodextrin is stirred and is mixed, and forms the first mixed liquor；Polyethylene glycol 1500, absolute ethyl alcohol and OTAC are stirred and is mixed, form the second mixed liquor；After the first mixed liquor is mixed with the second mixed liquor again, through drying, pressure break slow release type biological enzyme breaker is obtained.It is convenient material drawing of the present invention, simple to operate, easy, and can effectively avoid the activity of biology enzyme from suffering damage, the enzyme product for taking the method to prepare can be by slowly releasing biology enzyme, and realization delays brokenly the effect of glue.
Description
Technical field
The invention belongs to oil natural recovery technical field, more particularly to realize that working substance is slow in water-based fracturing construction
The technology of preparing of the biological enzyme breaker of release.
Background technology
With the increasingly depleted of conventional gas and oil resource, the exploitation of unconventional petroleum resources is increasingly paid attention to by the mankind,
Fracturing reform is the exploitation most important technological means of unconventional petroleum resources.Fracturing fluid is the most important working solution of pressing crack construction,
The need for reservoir reconstruction, it is desirable to which it keeps viscosity higher in pumping procedure, so as to realize that sand is stitched and taken to making for stabilization.
After construction terminates, it is desirable to which high-viscosity fracturing fluid gel realizes rapidly broken glue, can the thorough row of returning ground, reduction is to reservoir
Injury.
Most currently used gel breaker is ammonium persulfate and encapsulated ammonium persulfate, and these gel breakers can be fine
Ground meets more than the 65 DEG C technical needs of the fracturing liquid rubber-breaking of reservoir, but below 65 DEG C, the reaction speed of ammonium persulfate is big
To reduce, it is impossible to meet broken glue needs, therefore, in less than 65 DEG C of reservoirs, biology enzyme often is used as gel breaker, however, with
The same using the problem in ammonium persulfate, the biological enzyme breaker of addition can cause the mistake of fracturing fluid gel viscosity too early or excessively
Degree loss, causes fracturing fluid sand fallout sand plug or the not enough problem of width generation capacity, and uses breaker concentration too low, occurs again
Broken glue is not thorough, and cull is detained in reservoir, the problem for causing operation to injure.For ammonium persulfate class gel breaker, people employ
Encapsulated technology, delays the release time of gel breaker, realizes the broken glue of stabilization, and for biological enzyme breaker, existing market
On be still single fluid product, it is impossible to meet the technical need of effectively control fracturing fluid gel broken glue time.
The content of the invention
In order to realize time delay release and the delayed breaking down of fracturing fluid of biological enzyme breaker, pressure break work is better met
The need for industry, present invention aim at a kind of pressure break slow release type biological enzyme breaker of offer.
Pressure break of the invention slow release type biological enzyme breaker is by galactomannans enzyme liquid body, sodium bentonite, 18
Alkyl trimethyl ammonium chloride, beta-schardinger dextrin, polyethylene glycol 1500 and absolute ethyl alcohol composition.
Tests prove that, using slow release type biological enzyme breaker of the present invention, break glue reaction uniformly, the broken glue time is controllable, very
The need for meeting pressing crack construction well.
Further, galactomannans enzyme liquid body of the present invention, sodium bentonite, octadecyl trimethyl chlorination
Ammonium, beta-schardinger dextrin, polyethylene glycol 1500 and absolute ethyl alcohol account for 10~30%, the 1.0 of slow release type biological enzyme breaker gross weight respectively
~3.0%, 5.0~10.0%, 1.5~4.5%, 10~20.0% and 32.5~72.5%.
The present invention is by changing galactomannans enzyme liquid body and sodium bentonite, beta-schardinger dextrin, polyethylene glycol, anhydrous second
The ratio of alcohol, can form the slow release type biological enzyme solid pharmaceutical preparation of various ratios, the life of obtained slow release type biological enzyme and liquid
Thing enzyme is compared, and gel breaking capacity quite, but can be effectively to delay brokenly the glue time, extend time 150min~250min, can
Ensure the performance of fracturing fluid in pressing crack construction process, the effectively broken glue of fracturing fluid can be realized again.
Another object of the present invention is to provide the preparation method of above pressure break slow release type biological enzyme breaker.
Preparation method of the present invention is：Galactomannans enzyme liquid body, sodium bentonite and beta-schardinger dextrin are stirred and is mixed, shape
Into the first mixed liquor；Polyethylene glycol 1500, absolute ethyl alcohol and OTAC are stirred and is mixed, formed second and mix
Close liquid；After the first mixed liquor is mixed with the second mixed liquor again, through drying, pressure break slow release type biological enzyme breaker is obtained.
The method for preparing sustained release enzyme proposed by the present invention, it is convenient material drawing, simple to operate, easy, and can effectively keep away
The activity for exempting from biology enzyme is suffered damage, and the enzyme product for taking the method to prepare can be realized by slowly releasing biology enzyme
Delay brokenly the effect of glue.
Further, in order to the slow release type biological enzyme solid pharmaceutical preparation of various ratios, obtained slow release type biological can be formed
Compared with the biology enzyme of liquid, gel breaking capacity quite, but can be effectively to delay brokenly the glue time to enzyme, and extension time 150min~
250min, both can guarantee that the performance of fracturing fluid in pressing crack construction process, and the effectively broken glue of fracturing fluid can be realized again, of the present invention
Galactomannans enzyme liquid body, sodium bentonite, OTAC, beta-schardinger dextrin, polyethylene glycol 1500 and nothing
The quality that feeds intake of water-ethanol account for respectively slow release type biological enzyme breaker gross weight 10~30%, 1.0~3.0%, 5.0~10.0%,
1.5~4.5%, 10~20.0% and 32.5~72.5%.
Specific embodiment
First, preparation technology：
Distinguish each raw material of device according to following mass ratios：
Unit is in following table：kg
Galactomannans enzyme liquid body is the biological enzyme breaker of onsite application.
The preparation method of each example is above：
After by galactomannans enzyme liquid body, sodium bentonite, beta-schardinger dextrin stirring mixing, as A liquid.
By polyethylene glycol 1500, absolute ethyl alcohol, OTAC（1831）After stirring mixing, as B liquid.
A, B liquid are mixed, is sufficiently stirred for, finally dried, that is, slow release type biological enzyme breaker is obtained.
2nd, contrast should be able to：
Directly to use biological enzyme breaker as reference examples, the slow release of slow release type biological enzyme breaker in the contrast present invention
Energy.
The preparation of fracturing fluid base fluid：By 0.30% hydroxypropyl guar gum（Beijing-Kunming natural plant gum factory, first level flour）It is in rotating speed
In the mixed tune device of 5000rpm, in adding distilled water, after stirring 10min, 30 DEG C of water-baths 4 hours.
The preparation of frozen glue：The borax soln of 1.0% concentration is prepared as crosslinking agent, by fracturing fluid base fluid and crosslinking agent according to
Volume ratio 100：5.0 ratio mixing, glass bar stirring is until form the frozen glue that can be hung.
Be separately added into frozen glue to above-mentioned preparation 0.01% according to the present invention prepare slow release type biological enzyme breaker and
Reference examples biology enzyme breaker, is respectively placed in 50 DEG C of water-baths, periodically takes out and determines fracturing fluid gel viscosity（It is viscous in Fann35
Under the conditions of degree meter 100rpm）, to be put back in water-bath rapidly after test, viscosity is designated as less than 5mPa.s, stop recording after Gel Breakdown
Viscosity.
It is not difficult to find out by comparing with reference examples, break glue rapidly using the fracturing fluid gel of reference examples, viscosity declines soon, breaks
Glue process is difficult to control, and uses the slow release type biological enzyme breaker of present invention preparation, and broken glue reaction is uniform, and breaking the glue time can
Control, the need for meeting pressing crack construction well.
Claims (4)
1. a kind of pressure break slow release type biological enzyme breaker, it is characterised in that by galactomannans enzyme liquid body, sodium bentonite,
OTAC, beta-schardinger dextrin, polyethylene glycol 1500 and absolute ethyl alcohol composition.
2. pressure break slow release type biological enzyme breaker according to claim 1, it is characterised in that the galactomannans enzyme
Liquid, sodium bentonite, OTAC, beta-schardinger dextrin, polyethylene glycol 1500 and absolute ethyl alcohol account for slow respectively
Release 10~30%, 1.0~3.0%, 5.0~10.0%, 1.5~4.5%, 10~20.0% and of type biology enzyme breaker gross weight
32.5~72.5%.
3. the pressure break as claimed in claim 1 preparation method of slow release type biological enzyme breaker, it is characterised in that by galactomannan
The stirring mixing of dextranase liquid, sodium bentonite and beta-schardinger dextrin, forms the first mixed liquor；By polyethylene glycol 1500, anhydrous second
Alcohol and OTAC stirring mixing, form the second mixed liquor；The first mixed liquor is mixed with the second mixed liquor again
After conjunction, through drying, pressure break slow release type biological enzyme breaker is obtained.
4. the pressure break preparation method of slow release type biological enzyme breaker according to claim 3, it is characterised in that the gala
Mannase liquid, sodium bentonite, OTAC, beta-schardinger dextrin, polyethylene glycol 1500 and anhydrous second
The quality that feeds intake of alcohol accounts for 10~30%, 1.0~3.0%, 5.0~10.0%, the 1.5 of slow release type biological enzyme breaker gross weight respectively
~4.5%, 10~20.0% and 32.5~72.5%.
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| CN201710094658.7A CN106893574B (en) | 2017-02-22 | 2017-02-22 | A kind of pressure break slow release type biological enzyme breaker and preparation method thereof |
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| CN106893574B CN106893574B (en) | 2019-08-16 |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107573920A (en) * | 2017-10-18 | 2018-01-12 | 中国石油化工股份有限公司 | A kind of biology enzyme capsule breaker and preparation method thereof |
| CN108300450A (en) * | 2018-03-30 | 2018-07-20 | 王建东 | A kind of preparation method of the special gel breaker of aqueous fracturing fluid |
| CN108611083A (en) * | 2018-05-08 | 2018-10-02 | 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 clean fracturing fluid biological enzyme breaker and preparation method thereof |
| CN109722236A (en) * | 2018-08-27 | 2019-05-07 | 中国石油天然气股份有限公司 | Biological enzyme spansule gel breaker and preparation method thereof |
| CN112480901A (en) * | 2020-12-17 | 2021-03-12 | 齐鲁工业大学 | Double-embedded biological enzyme sustained-release gel breaker and preparation method thereof |
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| US5226479A (en) * | 1992-01-09 | 1993-07-13 | The Western Company Of North America | Fracturing fluid having a delayed enzyme breaker |
| CN102690645A (en) * | 2012-06-08 | 2012-09-26 | 中国海洋石油总公司 | Sustained-release gel-breaking type fracturing propping agent and preparation method thereof |
| CN103740690A (en) * | 2014-01-02 | 2014-04-23 | 山西大学 | Method for concentrating, stabilizing and separating liquid enzyme |
| CN103911140A (en) * | 2013-01-09 | 2014-07-09 | 中国石油化工股份有限公司 | Combined-type fracturing fluid bio-enzyme gel breaker and application method thereof |
| CN104673560A (en) * | 2015-03-25 | 2015-06-03 | 山西勇宁记科技有限公司 | Granule based on biological enzyme composition as well as preparation method and application thereof |
| CN104789204A (en) * | 2014-01-20 | 2015-07-22 | 中国石油化工股份有限公司 | Bio-enzyme gel breaker, and applications thereof |
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Patent Citations (6)
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| US5226479A (en) * | 1992-01-09 | 1993-07-13 | The Western Company Of North America | Fracturing fluid having a delayed enzyme breaker |
| CN102690645A (en) * | 2012-06-08 | 2012-09-26 | 中国海洋石油总公司 | Sustained-release gel-breaking type fracturing propping agent and preparation method thereof |
| CN103911140A (en) * | 2013-01-09 | 2014-07-09 | 中国石油化工股份有限公司 | Combined-type fracturing fluid bio-enzyme gel breaker and application method thereof |
| CN103740690A (en) * | 2014-01-02 | 2014-04-23 | 山西大学 | Method for concentrating, stabilizing and separating liquid enzyme |
| CN104789204A (en) * | 2014-01-20 | 2015-07-22 | 中国石油化工股份有限公司 | Bio-enzyme gel breaker, and applications thereof |
| CN104673560A (en) * | 2015-03-25 | 2015-06-03 | 山西勇宁记科技有限公司 | Granule based on biological enzyme composition as well as preparation method and application thereof |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107573920A (en) * | 2017-10-18 | 2018-01-12 | 中国石油化工股份有限公司 | A kind of biology enzyme capsule breaker and preparation method thereof |
| CN108300450A (en) * | 2018-03-30 | 2018-07-20 | 王建东 | A kind of preparation method of the special gel breaker of aqueous fracturing fluid |
| CN108611083A (en) * | 2018-05-08 | 2018-10-02 | 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 clean fracturing fluid biological enzyme breaker and preparation method thereof |
| CN108611083B (en) * | 2018-05-08 | 2020-11-13 | 中国石油天然气集团有限公司 | Biological enzyme gel breaker for clean fracturing fluid and preparation method thereof |
| CN109722236A (en) * | 2018-08-27 | 2019-05-07 | 中国石油天然气股份有限公司 | Biological enzyme spansule gel breaker and preparation method thereof |
| CN112480901A (en) * | 2020-12-17 | 2021-03-12 | 齐鲁工业大学 | Double-embedded biological enzyme sustained-release gel breaker and preparation method thereof |
| CN112480901B (en) * | 2020-12-17 | 2022-09-30 | 齐鲁工业大学 | Double-embedded biological enzyme sustained-release gel breaker and preparation method thereof |
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| CN106893574B (en) | 2019-08-16 |
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