CN106893574B - 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
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- CN106893574B CN106893574B CN201710094658.7A CN201710094658A CN106893574B CN 106893574 B CN106893574 B CN 106893574B CN 201710094658 A CN201710094658 A CN 201710094658A CN 106893574 B CN106893574 B CN 106893574B
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- biological enzyme
- slow release
- release type
- type biological
- mixed liquor
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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 petroleum natural recovery technical field, and galactomannans enzyme solution body, sodium bentonite and beta-cyclodextrin are stirred, and forms the first mixed liquor；Polyethylene glycol 1500, dehydrated alcohol and octadecyltrimethylammonium chloride are stirred, the second mixed liquor is formed；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.Present invention materials are convenient, easy to operate, easy, and can effectively avoid the activity of biological enzyme from being damaged, and the enzyme product for taking this method to prepare can realize the effect for delaying brokenly glue by slowly releasing biological enzyme.
Description
Technical field
The invention belongs to petroleum natural recovery technical fields, in particular to realize that effective substance is slow in water-based fracturing construction
The technology of preparing of the biological enzyme breaker of release.
Background technique
It is increasingly depleted with conventional gas and oil resource, the exploitation of unconventional petroleum resources increasingly by the attention of 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,
According to the needs of reservoir reconstruction, it is desirable that it keeps higher viscosity in pumping procedure, to realize stable seam and take sand.
After construction, it is desirable that highly viscous fracturing fluid gel realizes rapidly broken glue, can the thorough row of returning ground, reduction is to reservoir
Injury.
Currently most used gel breaker is ammonium persulfate and encapsulated ammonium persulfate, these gel breakers can be fine
Ground meets the technical need of 65 DEG C or more the fracturing liquid rubber-breakings of reservoir, but at 65 DEG C hereinafter, the reaction speed of ammonium persulfate is big
For reduction, glue needs are unable to satisfy brokenly, therefore, in lower than 65 DEG C reservoirs, are often used biological enzyme as gel breaker, however, with
The same using the problems in ammonium persulfate, too early or the excessive biology enzyme breaker that adds will cause the mistake of fracturing fluid gel viscosity
Degree loss causes the problem of fracturing fluid sand fallout sand plug or width generation capacity deficiency, and uses breaker concentration too low, and will appear
The problem of broken glue is not thorough, and residue glue is detained in reservoir, and operation is caused to injure.For ammonium persulfate class gel breaker, people are used
Encapsulated technology delays the release time of gel breaker, realizes stable broken glue, and for biological enzyme breaker, existing market
On still be single liquid product, be unable to satisfy effectively control fracturing fluid gel gel breaking time technical need.
Summary of the invention
In order to realize that the delay of biological enzyme breaker discharges the delayed breaking down with fracturing fluid, pressure break work is better met
The needs of industry, it is an object of that present invention to provide a kind of pressure break slow release type biological enzyme breakers.
Pressure break of the invention is with slow release type biological enzyme breaker by galactomannans enzyme solution body, sodium bentonite, 18
Alkyl trimethyl ammonium chloride, beta-cyclodextrin, polyethylene glycol 1500 and dehydrated alcohol composition.
Tests prove that breaking glue reaction uniformly, gel breaking time is controllable, very using slow release type biological enzyme breaker of the present invention
The needs of pressing crack construction are met well.
Further, galactomannans enzyme solution body of the present invention, sodium bentonite, octadecyl trimethyl chlorination
Ammonium, beta-cyclodextrin, polyethylene glycol 1500 and dehydrated alcohol account for 10~30%, the 1.0 of slow release type biological enzyme breaker total 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 solution body and sodium bentonite, beta-cyclodextrin, polyethylene glycol, anhydrous second
The ratio of alcohol can form the slow release type biological enzyme solid pharmaceutical preparation of a variety of ratios, the life of slow release type biological enzyme and liquid obtained
Object enzyme is compared, and gel breaking capacity is suitable, but can effectively delay gel breaking time, extends time 150min~250min, can
Guarantee the performance of fracturing fluid in pressing crack construction process, and is able to achieve effective broken glue of fracturing fluid.
Another object of the present invention is to provide the preparation method of the above pressure break slow release type biological enzyme breaker.
Preparation method of the present invention is: galactomannans enzyme solution body, sodium bentonite and beta-cyclodextrin being stirred, shape
At the first mixed liquor；Polyethylene glycol 1500, dehydrated alcohol and octadecyltrimethylammonium chloride are stirred, it is mixed to form second
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 of preparation sustained release enzyme proposed by the present invention, it is convenient, easy to operate, easy to draw materials, and can effectively keep away
The activity for exempting from biological enzyme is damaged, and the enzyme product for taking this method to prepare can be realized by slowly releasing biological enzyme
Delay brokenly the effect of glue.
Further, in order to the slow release type biological enzyme solid pharmaceutical preparations of a variety of ratios, slow release type biological obtained can be formed
For enzyme compared with the biological enzyme of liquid, gel breaking capacity is suitable, but can effectively delay gel breaking time, and extension time 150min~
250min, not only can guarantee the performance of fracturing fluid in pressing crack construction process, but also be able to achieve effective broken glue of fracturing fluid, of the present invention
Galactomannans enzyme solution body, sodium bentonite, octadecyltrimethylammonium chloride, beta-cyclodextrin, polyethylene glycol 1500 and nothing
The quality that feeds intake of water-ethanol account for respectively slow release type biological enzyme breaker total 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
One, preparation process:
Each raw material of device is distinguished according to following mass ratios:
Unit in following table are as follows: kg
Galactomannans enzyme solution body is the biological enzyme breaker that scene uses.
The preparation method of above each example is:
After galactomannans enzyme solution body, sodium bentonite, beta-cyclodextrin are stirred, as A liquid.
After polyethylene glycol 1500, dehydrated alcohol, octadecyltrimethylammonium chloride (1831) are stirred, as B liquid.
A, B liquid are mixed, are sufficiently stirred, finally dries, obtains slow release type biological enzyme breaker.
Two, comparison should be able to:
Directly to use biological enzyme breaker as reference examples, the sustained release of slow release type biological enzyme breaker in the present invention is compared
Performance.
The preparation of fracturing fluid base fluid: the hydroxypropyl guar gum (Beijing-Kunming natural plant gum factory, first level flour) by 0.30% is in revolving speed
In the mixed tune device of 5000rpm, add in distilled water, stir 10min after, 30 DEG C water-bath 4 hours.
The preparation of frozen glue: preparing the borax soln of 1.0% concentration as crosslinking agent, by fracturing fluid base fluid and crosslinking agent according to
The ratio of volume ratio 100:5.0 mixes, and glass bar stirring is until form the frozen glue that can be hung.
Be separately added into the frozen glue of above-mentioned preparation 0.01% according to slow release type biological enzyme breaker prepared by the present invention and
Reference examples biology enzyme breaker is respectively placed in 50 DEG C of water-baths, and it is (viscous in Fann35 periodically to take out measurement fracturing fluid gel viscosity
Under the conditions of degree meter 100rpm), it is put back in water-bath rapidly after test, viscosity is denoted as less than 5mPa.s after Gel Breakdown, is stopped recording
Viscosity.
By being not difficult to find out compared with reference examples, rapid using the broken glue of the fracturing fluid gel of reference examples, viscosity decline is fast, breaks
Glue process is not easy to control, and uses slow release type biological enzyme breaker prepared by the present invention, breaks glue reaction uniformly, gel breaking time can
Control, meets the needs of pressing crack construction well.
Claims (2)
1. a kind of pressure break preparation method of slow release type biological enzyme breaker, it is characterised in that by galactomannans enzyme solution body,
Sodium bentonite and beta-cyclodextrin are stirred, and form the first mixed liquor；By polyethylene glycol 1500, dehydrated alcohol and octadecyl
Trimethyl ammonium chloride is stirred, and forms the second mixed liquor；After the first mixed liquor is mixed with the second mixed liquor again, through drying,
Obtain pressure break slow release type biological enzyme breaker.
2. the preparation method of pressure break slow release type biological enzyme breaker according to claim 1, it is characterised in that the gala
Mannase liquid, sodium bentonite, octadecyltrimethylammonium chloride, beta-cyclodextrin, 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 total weight respectively
~4.5%, 10~20.0% and 32.5~72.5%.
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| Application Number | Priority Date | Filing Date | Title |
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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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| 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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| CN106893574A CN106893574A (en) | 2017-06-27 |
| CN106893574B true CN106893574B (en) | 2019-08-16 |
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Families Citing this family (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 |
| 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 |
| 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 |
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 |
| 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 |
-
2017
- 2017-02-22 CN CN201710094658.7A patent/CN106893574B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
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