CN101942983A - Process for performing well completion by utilizing biological completion fluid - Google Patents
Process for performing well completion by utilizing biological completion fluid Download PDFInfo
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- CN101942983A CN101942983A CN 201010272716 CN201010272716A CN101942983A CN 101942983 A CN101942983 A CN 101942983A CN 201010272716 CN201010272716 CN 201010272716 CN 201010272716 A CN201010272716 A CN 201010272716A CN 101942983 A CN101942983 A CN 101942983A
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Abstract
The invention discloses a process for performing well completion by utilizing biological completion fluid, which comprises the following steps of: preparing biological enzyme aqueous solution; preparing biological acid aqueous solution; sequentially squeezing or mixing and squeezing the biological enzyme aqueous solution and the biological acid aqueous solution into a well by using a tubing high-pressure water jet device after perforation; and finally closing the well for 24 to 72 hours, washing boreholes after pressure diffusion, and performing a cyclic filling and sand prevention process. As de-plugging and scale formation prevention are combined and physical measures and chemical measures are combined, the process has the advantage of fulfilling the aims of effectively improving the permeability around the well, the production efficiency of an oil well, the yield and the recovery ratio at the premise of protecting oil pools.
Description
Technical field
The present invention relates to carry out in the oil field development technology of completion, particularly a kind of technology of utilizing biological completion fluid to carry out completion.
Background technology
Different according to producing zone with the mode of communicating and the shaft bottom form of structure of well, completion method can be divided into: modes such as barefoot completion, perforation completion, liner-type well completion, gravel pack completion, because the injury of drill in fluid and the restriction on stratum itself cause a lot of brought in wells to fall flat.Except the drilling well factor, many times be because completion is not taked suitable manner, cause operation efficient low, very uneconomical, some wells are owing to pollution even become dried-up well.
Present water based completion liquid is mainly the polymer glue of no solid phase clear brine completion fluid and no solid phase, and its key component is a water-soluble polymer, clay stabilizer, inorganic salts, NaOH, bactericide.Though these completion fluid systems can be accomplished the low infringement of reservoir by a large amount of work, technical data reaches the requirement of reservoir protection, but it can not remove and overcome the former infringement that has been subjected to of reservoir: as absorption, delay and the attached collection of various big molecule inorganic agents in reservoir; Be incompatible between various operation liquid, the formation water; Be incompatible between various operation liquid and the reservoir mineral: perforation is difficult to resolve the in-depth formation damage that causes except that liquid phase, inorganic agent; Solid phase on perforation is difficult to remove between the hole is vertically stopped up; Again go into operation after barefoot completion or the workover treatment, oil stream self is difficult to remove in-depth formation damage; Under simulation reservoir temperature, pressure and formation water condition, various working fluids can make reservoir core permeability impairment degree reach 30% to 50%, can not be further improve reservoir, reach the purpose of oil well production increasing.
Before the current domestic operation, major measure is to take to add some oil reservoir protection liquid, and the part oil well is taked conventional pickling measure, and technology also exists some restraining factors.We on individual well operation efficient often differ several times even 10 times with going together abroad, and the exploitation through the same oil district that is everlasting exists very big gap.
Seek a kind of raising completion quality, the well-completing process that improves completion volume increase and operation efficient has become everybody common recognition.
Summary of the invention
In order to overcome the defective of above-mentioned prior art; the object of the present invention is to provide a kind of technology of utilizing biological completion fluid to carry out completion; de-plugging is combined with pre-antiscale matter formation; physics is combined with chemical; under the prerequisite of oil reservoir protection, reach the nearly well permeability of effective raising, improve the efficient that brings in; improve production capacity, improve the purpose of recovery ratio.
In order to achieve the above object, technical scheme of the present invention is achieved in that
A kind of technology of utilizing biological completion fluid to carry out completion may further comprise the steps:
Step 1: biology enzyme and water are mixed with the biology enzyme aqueous solution of 2-10% according to mass ratio, and biology enzyme is that the BOVEE bioactivator by the marine alga glycolipid of the NOWEE complex enzyme of the hemicellulase of the protease of 10-30 part, 15-35 part, 10-30 part, 5-15 part and 15-35 part mixes;
Step 2: bionic acid and water are mixed with the bionic acid aqueous solution of 7.5-15% according to mass ratio, and described bionic acid is the acid that utilizes bioprocess technology to refine, the tartaric acid that produces as fermentation;
Step 3: behind perforation, with following oil pipe band high-voltage water jet device the biology enzyme aqueous solution and the bionic acid aqueous solution are clamp-oned in the well successively or after mixing, the cumulative volume of two kinds of liquid is calculated as follows:
In the formula: V---total consumption, m
3
r
i---the treatment radius of i interval, m selects 1.5 herein;
h
i---the thickness of i interval, m;
Φ
i---the effecive porosity of i interval, decimal;
Wherein, the volume ratio of the bionic acid aqueous solution and the biology enzyme aqueous solution is 1: (0.5-3);
Step 4: closing well 24-72h, diffusion pressure afterflush borehole carries out the flow pack sand-preventing process then.
The present invention improves the oil gas well capacity in conjunction with environmental protection biology enzyme, the new completion fluid of this biological oil volume increase high-tech of bionic acid as biological completion fluid harmless or that infringement is lighter.New completion fluid treatment process is de-plugging to be formed with pre-antiscale matter combine, and physics is combined with chemical, under the prerequisite of oil reservoir protection, reaches the nearly well permeability of effective raising, improves the efficient that brings in, and improves production capacity, improves the purpose of recovery ratio.
Briefly, the biology enzyme bionic acid science and technology with environmental protection injures viscosity reduction de-plugging elimination with drilling fluid exactly, the protection oil reservoir; eliminate all kinds of oil reservoir restraining factors, improve the degree that is communicated with of oil gas and well, the raising permeability; improve production capacity, technology can prevent the deposition once more of dirt, prolongs productive life.
The biology enzyme completion technique has and prevents to pollute, and removes and stops up, and eliminates injury, guarantees the advantage of volume increase, embodies the environmental protection de-plugging, and the safety volume increase improves the high-tech feature of recovery ratio, meets the thinking of the Scientific Outlook on Development.
Utilize high-voltage water jet device will stop up cleaning by the high-pressure physics effect and carry out well, pore throat is more cleaned, oil stream is more unimpeded, and operation efficient is higher, and output is bigger.
Well-completing process of the present invention compared with prior art has following advantage:
1. physics is combined with chemical, polymer, organic-inorganic stop up to be removed thoroughly.
2. de-plugging forms with pre-antiscale matter and combines, and oil reservoir protects, and can not cause other formation damage.
3. rock wettability is good, and the oil-sand separating rate is fast.
4. there is not corrosion, environmental protection, safety.
5. biological completion fluid has lower surface tension, can eliminate the water lock.
6. easy and simple to handle, volume increase obviously.
The specific embodiment
Embodiment one
Present embodiment may further comprise the steps:
Step 1: biology enzyme and water are mixed with 10% the biology enzyme aqueous solution according to mass ratio, and biology enzyme is to be mixed by 10 parts protease, 15 parts hemicellulase, 30 parts NOWEE complex enzyme, 10 parts marine alga glycolipid and 35 parts BOVEE bioactivator;
Step 2: bionic acid and water are mixed with 7.5% the bionic acid aqueous solution according to mass ratio, and described bionic acid is the acid that utilizes bioprocess technology to refine, the tartaric acid that produces as fermentation;
Step 3: behind perforation, with following oil pipe band high-voltage water jet device the biology enzyme aqueous solution and the bionic acid aqueous solution are clamp-oned in the well successively or after mixing, the cumulative volume of two kinds of liquid is calculated as follows:
In the formula: V---total consumption, m
3
r
i---the treatment radius of i interval, m selects 1.5 herein;
h
i---the thickness of i interval, m;
Φ
i---the effecive porosity of i interval, decimal;
Wherein, the volume ratio of the bionic acid aqueous solution and the biology enzyme aqueous solution is 1: 0.5;
Step 4: closing well 72h, diffusion pressure afterflush borehole carries out the flow pack sand-preventing process then.
Construction well target zone is a shop epimere 4
5Sand body, effective thickness is more than 4m.Reservoir is meandering stream positive rhythm deposition sand body, bury shallow, a little less than the rock diagenesis, loose cementation, rerum natura is better, average pore 32.9%, mean permeability 1847 * 10
-3μ m
2This well is the bore hole sieve tube completion, the outer not well cementation of pipe.Polymer plugging after not going into operation, and carries out completion according to the scheme of present embodiment, goes into operation oil production 30.1t/d, moisture 40.1% 6 days.
Embodiment two
Present embodiment may further comprise the steps:
Step 1: biology enzyme and water are mixed with 5% the biology enzyme aqueous solution according to mass ratio, and biology enzyme is to be mixed by 20 parts protease, 25 parts hemicellulase, 20 parts NOWEE complex enzyme, 5 parts marine alga glycolipid and 30 parts BOVEE bioactivator;
Step 2: bionic acid and water are mixed with 10% the bionic acid aqueous solution according to mass ratio, and described bionic acid is the acid that utilizes bioprocess technology to refine, the tartaric acid that produces as fermentation;
Step 3: behind perforation, with following oil pipe band high-voltage water jet device the biology enzyme aqueous solution and the bionic acid aqueous solution are clamp-oned in the well successively or after mixing, the cumulative volume of two kinds of liquid is calculated as follows:
In the formula: V---total consumption, m
3
r
i---the treatment radius of i interval, m selects 1.5 herein;
h
i---the thickness of i interval, m;
Φ
i---the effecive porosity of i interval, decimal;
Wherein, the volume ratio of the bionic acid aqueous solution and the biology enzyme aqueous solution is 1: 2;
Step 4: closing well 48h, diffusion pressure afterflush borehole carries out the flow pack sand-preventing process then.
MAN lekhwair zone AHB-131 well, extended horizontal depth 136ft, average pore 16%, permeability 16-168md.Take starch base mud, completion is used the PROCESS FOR TREATMENT starch slurry system of this embodiment, and completion is satisfactory for result, aerogenesis 20,000 m
3/ d, produce oil 36t/d.
Embodiment three
Present embodiment may further comprise the steps:
Step 1: biology enzyme and water are mixed with 2% the biology enzyme aqueous solution according to mass ratio, and biology enzyme is to be mixed by 30 parts protease, 35 parts hemicellulase, 10 parts NOWEE complex enzyme, 10 parts marine alga glycolipid and 15 parts BOVEE bioactivator;
Step 2: bionic acid and water are mixed with 15% the bionic acid aqueous solution according to mass ratio, and described bionic acid is the acid that utilizes bioprocess technology to refine, the tartaric acid that produces as fermentation;
Step 3: behind perforation, with following oil pipe band high-voltage water jet device the biology enzyme aqueous solution and the bionic acid aqueous solution are clamp-oned in the well successively or after mixing, the cumulative volume of two kinds of liquid is calculated as follows:
In the formula: V---total consumption, m
3
r
i---the treatment radius of i interval, m selects 1.5 herein;
h
i---the thickness of i interval, m;
Φ
i---the effecive porosity of i interval, decimal.
Wherein, the volume ratio of the bionic acid aqueous solution and the biology enzyme aqueous solution is 1: 3;
Step 4: closing well 24h, diffusion pressure afterflush borehole carries out the flow pack sand-preventing process then.
Sandstone oil reservoir, mean permeability 228md bores dark 3360m, horizontal segment 228m, the bore hole sieve tube completion uses this technology to handle operation oil production 116m before going into operation
3/ d, aerogenesis 7000m
3/ d.
Embodiment four
Present embodiment may further comprise the steps:
Step 1: biology enzyme and water are mixed with 5% the biology enzyme aqueous solution according to mass ratio, and biology enzyme is to be mixed by 20 parts protease, 30 parts hemicellulase, 20 parts NOWEE complex enzyme, 10 parts marine alga glycolipid and 20 parts BOVEE bioactivator;
Step 2: bionic acid and water are mixed with 7.5% the bionic acid aqueous solution according to mass ratio, and described bionic acid is the acid that utilizes bioprocess technology to refine, the tartaric acid that produces as fermentation;
Step 3: behind perforation, with following oil pipe band high-voltage water jet device the biology enzyme aqueous solution and the bionic acid aqueous solution are clamp-oned in the well successively or after mixing, the cumulative volume of two kinds of liquid is calculated as follows:
In the formula: V---total consumption, m
3
r
i---the treatment radius of i interval, m selects 1.5 herein;
h
i---the thickness of i interval, m;
Φ
i---the effecive porosity of i interval, decimal;
Wherein, the volume ratio of the bionic acid aqueous solution and the biology enzyme aqueous solution is 1: 2;
Step 4: closing well 48h, diffusion pressure afterflush borehole carries out the flow pack sand-preventing process then.
The zone, Erdos, low porosity and low permeability, reservoir properties is poor, and gas-bearing formation is contaminated easily, pollutes the back and is difficult to recover.Main borehole finishing drilling well depth 4006m, vertical depth 2882m, horizontal segment length 900m, horizontal movement 1250m.This well drills two sections coal seam accumulative total 41m, mud stone 195.66m, and well keeps stablizing unimpeded, and employed no clay floats the pearl drilling fluid system.Take the PROCESS FOR TREATMENT barefoot interval of this embodiment, go into operation successfully, individual well is joined product and is reached 50,000 m
3/ d.
Embodiment five
Present embodiment may further comprise the steps:
Step 1: biology enzyme and water are mixed with 8% the biology enzyme aqueous solution according to mass ratio, and biology enzyme is to be mixed by 25 parts protease, 20 parts hemicellulase, 20 parts NOWEE complex enzyme, 5 parts marine alga glycolipid and 20 parts BOVEE bioactivator;
Step 2: bionic acid and water are mixed with 10% the bionic acid aqueous solution according to mass ratio, and described bionic acid is the acid that utilizes bioprocess technology to refine, the tartaric acid that produces as fermentation;
Step 3: behind perforation, with following oil pipe band high-voltage water jet device the biology enzyme aqueous solution and the bionic acid aqueous solution are clamp-oned in the well successively or after mixing, the cumulative volume of two kinds of liquid is calculated as follows:
In the formula: V---total consumption, m
3
r
i---the treatment radius of i interval, m selects 1.5 herein;
h
i---the thickness of i interval, m;
Φ
i---the effecive porosity of i interval, decimal;
Wherein, the volume ratio of the bionic acid aqueous solution and the biology enzyme aqueous solution is 1: 2;
Step 4: closing well 72h, diffusion pressure afterflush borehole carries out the flow pack sand-preventing process then.
The somewhere hangs the unsuccessful back of accurate sand screen sand control blowing operation and changes electric pump, and oil pressure is zero, and the fluid closing well does not add up fluid 69m
3Analyze former because oil layer pollution, pressure reduction changes and results in blockage.Use present embodiment technology to handle operation oil production 103m
3/ d, aerogenesis 20000m
3/ d.
Embodiment six
Present embodiment may further comprise the steps:
Step 1: biology enzyme and water are mixed with 5% the biology enzyme aqueous solution according to mass ratio, and biology enzyme is to be mixed by 25 parts protease, 18 parts hemicellulase, 12 parts NOWEE complex enzyme, 10 parts marine alga glycolipid and 35 parts BOVEE bioactivator;
Step 2: bionic acid and water are mixed with 7.5% the bionic acid aqueous solution according to mass ratio, and described bionic acid is the acid that utilizes bioprocess technology to refine, the tartaric acid that produces as fermentation;
Step 3: behind perforation, with following oil pipe band high-voltage water jet device the biology enzyme aqueous solution and the bionic acid aqueous solution are clamp-oned in the well successively or after mixing, the cumulative volume of two kinds of liquid is calculated as follows:
In the formula: V---total consumption, m
3
r
i---the treatment radius of i interval, m selects 1.5 herein;
h
i---the thickness of i interval, m;
Φ
i---the effecive porosity of i interval, decimal;
Wherein, the volume ratio of the bionic acid aqueous solution and the biology enzyme aqueous solution is 1: 3;
Step 4: closing well 48h, diffusion pressure afterflush borehole carries out technologies such as flow pack sand control then.
Use the well of this PROCESS FOR TREATMENT, expected volume improves more than 25% on year-on-year basis, and economic benefit obtained extraordinary effect than 1: 50.
Claims (7)
1. a technology of utilizing biological completion fluid to carry out completion is characterized in that, may further comprise the steps:
Step 1: biology enzyme and water are mixed with the biology enzyme aqueous solution of 2-10% according to mass ratio, and biology enzyme is that the BOVEE bioactivator by the marine alga glycolipid of the NOWEE complex enzyme of the hemicellulase of the protease of 10-30 part, 15-35 part, 10-30 part, 5-15 part and 15-35 part mixes;
Step 2: bionic acid and water are mixed with the bionic acid aqueous solution of 7.5-15% according to mass ratio, and described bionic acid is the acid that utilizes bioprocess technology to refine;
Step 3: behind perforation, with following oil pipe band high-voltage water jet device the biology enzyme aqueous solution and the bionic acid aqueous solution are clamp-oned in the well successively or after mixing, the cumulative volume of two kinds of liquid is calculated as follows:
In the formula: V---total consumption, m
3
r
i---the treatment radius of i interval, m selects 1.5 herein;
h
i---the thickness of i interval, m;
Φ
i---the effecive porosity of i interval, decimal;
Wherein, the volume ratio of the bionic acid aqueous solution and the biology enzyme aqueous solution is 1: (0.5-3);
Step 4: closing well 24-72h, diffusion pressure afterflush borehole carries out the flow pack sand-preventing process then.
2. a kind of technology of utilizing biological completion fluid to carry out completion according to claim 1 is characterized in that, may further comprise the steps:
Step 1: biology enzyme and water are mixed with 10% the biology enzyme aqueous solution according to mass ratio, and biology enzyme is to be mixed by 10 parts protease, 15 parts hemicellulase, 30 parts NOWEE complex enzyme, 10 parts marine alga glycolipid and 35 parts BOVEE bioactivator;
Step 2: bionic acid and water is mixed with 7.5% the bionic acid aqueous solution according to mass ratio;
Step 3: behind perforation, with following oil pipe band high-voltage water jet device the biology enzyme aqueous solution and the bionic acid aqueous solution are clamp-oned in the well successively or after mixing, the cumulative volume of two kinds of liquid is calculated as follows:
In the formula: V---total consumption, m
3
r
i---the treatment radius of i interval, m selects 1.5 herein;
h
i---the thickness of i interval, m;
Φ
i---the effecive porosity of i interval, decimal.
Wherein, the volume ratio of the bionic acid aqueous solution and the biology enzyme aqueous solution is 1: 0.5;
Step 4: closing well 72h, diffusion pressure afterflush borehole carries out the flow pack sand-preventing process then.
3. a kind of technology of utilizing biological completion fluid to carry out completion according to claim 1 is characterized in that, may further comprise the steps:
Step 1: biology enzyme and water are mixed with 5% the biology enzyme aqueous solution according to mass ratio, and biology enzyme is to be mixed by 20 parts protease, 25 parts hemicellulase, 20 parts NOWEE complex enzyme, 5 parts marine alga glycolipid and 30 parts BOVEE bioactivator;
Step 2: bionic acid and water is mixed with 10% the bionic acid aqueous solution according to mass ratio;
Step 3: behind perforation, with following oil pipe band high-voltage water jet device the biology enzyme aqueous solution and the bionic acid aqueous solution are clamp-oned in the well successively or after mixing, the cumulative volume of two kinds of liquid is calculated as follows:
In the formula: V---total consumption, m
3
r
i---the treatment radius of i interval, m selects 1.5 herein;
h
i---the thickness of i interval, m;
Φ
i---the effecive porosity of i interval, decimal;
Wherein, the volume ratio of the bionic acid aqueous solution and the biology enzyme aqueous solution is 1: 2;
Step 4: closing well 48h, diffusion pressure afterflush borehole carries out the flow pack sand-preventing process then.
4. a kind of technology of utilizing biological completion fluid to carry out completion according to claim 1 is characterized in that, may further comprise the steps:
Step 1: biology enzyme and water are mixed with 2% the biology enzyme aqueous solution according to mass ratio, and biology enzyme is to be mixed by 30 parts protease, 35 parts hemicellulase, 10 parts NOWEE complex enzyme, 10 parts marine alga glycolipid and 15 parts BOVEE bioactivator;
Step 2: bionic acid and water is mixed with 15% the bionic acid aqueous solution according to mass ratio;
Step 3: behind perforation, with following oil pipe band high-voltage water jet device the biology enzyme aqueous solution and the bionic acid aqueous solution are clamp-oned in the well successively or after mixing, the cumulative volume of two kinds of liquid is calculated as follows:
In the formula: V---total consumption, m
3
r
i---the treatment radius of i interval, m selects 1.5 herein;
h
i---the thickness of i interval, m;
Φ
i---the effecive porosity of i interval, decimal;
Wherein, the volume ratio of the bionic acid aqueous solution and the biology enzyme aqueous solution is 1: 3;
Step 4: closing well 24h, diffusion pressure afterflush borehole carries out the flow pack sand-preventing process then.
5. a kind of technology of utilizing biological completion fluid to carry out completion according to claim 1 is characterized in that, may further comprise the steps:
Step 1: biology enzyme and water are mixed with 5% the biology enzyme aqueous solution according to mass ratio, and biology enzyme is to be mixed by 20 parts protease, 30 parts hemicellulase, 20 parts NOWEE complex enzyme, 10 parts marine alga glycolipid and 20 parts BOVEE bioactivator;
Step 2: bionic acid and water is mixed with 7.5% the bionic acid aqueous solution according to mass ratio;
Step 3: behind perforation, following oil pipe band high-voltage water jet device is clamp-oned the biology enzyme aqueous solution and the bionic acid aqueous solution in the well successively or after mixing, and the cumulative volume of two kinds of liquid is calculated as follows:
In the formula: V---total consumption, m
3
r
i---the treatment radius of i interval, m selects 1.5 herein;
h
i---the thickness of i interval, m;
Φ
i---the effecive porosity of i interval, decimal;
Wherein, the volume ratio of the bionic acid aqueous solution and the biology enzyme aqueous solution is 1: 2;
Step 4: closing well 48h, diffusion pressure afterflush borehole carries out the flow pack sand-preventing process then.
6. a kind of technology of utilizing biological completion fluid to carry out completion according to claim 1 is characterized in that, may further comprise the steps:
Step 1: biology enzyme and water are mixed with 8% the biology enzyme aqueous solution according to mass ratio, and biology enzyme is to be mixed by 25 parts protease, 20 parts hemicellulase, 20 parts NOWEE complex enzyme, 5 parts marine alga glycolipid and 20 parts BOVEE bioactivator;
Step 2: bionic acid and water is mixed with 10% the bionic acid aqueous solution according to mass ratio;
Step 3: behind perforation, with following oil pipe band high-voltage water jet device the biology enzyme aqueous solution and the bionic acid aqueous solution are clamp-oned in the well successively or after mixing, the cumulative volume of two kinds of liquid is calculated as follows:
In the formula: V---total consumption, m
3
r
i---the treatment radius of i interval, m selects 1.5 herein;
h
i---the thickness of i interval, m;
Φ
i---the effecive porosity of i interval, decimal;
Wherein, the volume ratio of the bionic acid aqueous solution and the biology enzyme aqueous solution is 1: 2;
Step 4: closing well 72h, diffusion pressure afterflush borehole carries out the flow pack sand-preventing process then.
7. a kind of technology of utilizing biological completion fluid to carry out completion according to claim 1 is characterized in that, may further comprise the steps:
Step 1: biology enzyme and water are mixed with 5% the biology enzyme aqueous solution according to mass ratio, and biology enzyme is to be mixed by 25 parts protease, 18 parts hemicellulase, 12 parts NOWEE complex enzyme, 10 parts marine alga glycolipid and 35 parts BOVEE bioactivator;
Step 2: bionic acid and water is mixed with 7.5% the bionic acid aqueous solution according to mass ratio;
Step 3: behind perforation, with following oil pipe band high-voltage water jet device the biology enzyme aqueous solution and the bionic acid aqueous solution are clamp-oned in the well successively or after mixing, the cumulative volume of two kinds of liquid is calculated as follows:
In the formula: V---total consumption, m
3
r
i---the treatment radius of i interval, m selects 1.5 herein;
h
i---the thickness of i interval, m;
Φ
i---the effecive porosity of i interval, decimal;
Wherein, the volume ratio of the bionic acid aqueous solution and the biology enzyme aqueous solution is 1: 3;
Step 4: closing well 48h, diffusion pressure afterflush borehole carries out the flow pack sand-preventing process then.
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|---|---|---|---|
| CN 201010272716 CN101942983A (en) | 2010-09-03 | 2010-09-03 | Process for performing well completion by utilizing biological completion fluid |
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|---|---|---|---|
| CN 201010272716 CN101942983A (en) | 2010-09-03 | 2010-09-03 | Process for performing well completion by utilizing biological completion fluid |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102278092A (en) * | 2011-07-12 | 2011-12-14 | 西安石油大学 | Biological enzyme blocking removal process for blocking of inorganic scaling contained in strata |
| CN102304355A (en) * | 2011-07-12 | 2012-01-04 | 西安石油大学 | Bio-enzyme well completion agent and application thereof |
| CN102305050A (en) * | 2011-07-12 | 2012-01-04 | 西安石油大学 | SUN-W100 biological enzyme well completion production increasing process for well completion plugging removal of oil field |
| CN102383763A (en) * | 2011-07-12 | 2012-03-21 | 西安石油大学 | Bio-enzyme unblocking process for stratum blocking without inorganic scale |
| CN107090285A (en) * | 2017-05-17 | 2017-08-25 | 广西品位生物科技有限公司 | A kind of horizontal well biology yield increasing solution |
| CN115806811A (en) * | 2021-09-13 | 2023-03-17 | 中石化石油工程技术服务有限公司 | Blocking remover for drilling fluid based on biological acid-biological enzyme cross-linked compound microemulsion as well as preparation method and use method of blocking remover |
-
2010
- 2010-09-03 CN CN 201010272716 patent/CN101942983A/en active Pending
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102278092A (en) * | 2011-07-12 | 2011-12-14 | 西安石油大学 | Biological enzyme blocking removal process for blocking of inorganic scaling contained in strata |
| CN102304355A (en) * | 2011-07-12 | 2012-01-04 | 西安石油大学 | Bio-enzyme well completion agent and application thereof |
| CN102305050A (en) * | 2011-07-12 | 2012-01-04 | 西安石油大学 | SUN-W100 biological enzyme well completion production increasing process for well completion plugging removal of oil field |
| CN102383763A (en) * | 2011-07-12 | 2012-03-21 | 西安石油大学 | Bio-enzyme unblocking process for stratum blocking without inorganic scale |
| CN102278092B (en) * | 2011-07-12 | 2014-05-28 | 西安石油大学 | Biological enzyme blocking removal process for blocking of inorganic scaling contained in strata |
| CN107090285A (en) * | 2017-05-17 | 2017-08-25 | 广西品位生物科技有限公司 | A kind of horizontal well biology yield increasing solution |
| CN115806811A (en) * | 2021-09-13 | 2023-03-17 | 中石化石油工程技术服务有限公司 | Blocking remover for drilling fluid based on biological acid-biological enzyme cross-linked compound microemulsion as well as preparation method and use method of blocking remover |
| CN115806811B (en) * | 2021-09-13 | 2024-03-15 | 中石化石油工程技术服务有限公司 | Blocking remover for drilling fluid based on biological acid-biological enzyme cross-linked composite microemulsion, and preparation method and use method thereof |
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Application publication date: 20110112 |