CN105567200A - Method for preparing biological gel profile control agent - Google Patents
Method for preparing biological gel profile control agent Download PDFInfo
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- CN105567200A CN105567200A CN201610120185.9A CN201610120185A CN105567200A CN 105567200 A CN105567200 A CN 105567200A CN 201610120185 A CN201610120185 A CN 201610120185A CN 105567200 A CN105567200 A CN 105567200A
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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
- C09K8/50—Compositions for plastering borehole walls, i.e. compositions for temporary consolidation of borehole walls
- C09K8/504—Compositions based on water or polar solvents
- C09K8/506—Compositions based on water or polar solvents containing organic compounds
- C09K8/508—Compositions based on water or polar solvents containing organic compounds macromolecular compounds
- C09K8/514—Compositions based on water or polar solvents containing organic compounds macromolecular compounds of natural origin, e.g. polysaccharides, cellulose
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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
- C09K8/50—Compositions for plastering borehole walls, i.e. compositions for temporary consolidation of borehole walls
- C09K8/516—Compositions for plastering borehole walls, i.e. compositions for temporary consolidation of borehole walls characterised by their form or by the form of their components, e.g. encapsulated material
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Abstract
The invention discloses a method for preparing a biological gel profile control agent and belongs to the field of profile control agents. The method comprises the steps of mixing soybean acid-soluble protein and a soybean polysaccharide solution so as to prepare gel, then, mixing the gel with gelatin, adding a cross-linker, an initiator, a gelation promoting agent and the like into the mixture, carrying out a mixed reaction so as to prepare a gel profile control agent, and finally, carrying out drying treatment, packaging and storing, thereby preparing the biological gel profile control agent. The gel profile control agent prepared by the method can be naturally degraded, does not pollute environment, does not damage strata, is free of forbidden medicines and is used for improving the oil reservoir permeability during oil production so as to increase oil recovery rate.
Description
Technical field
The invention discloses a kind of preparation method of xanthan gel amendment, belong to amendment field.
Background technology
Profile Control in Injection Well technology is that oil-field development enters the main steady oily water control technique measure of of high water cut rate.For some the specific type oil reservoirs dropping into exploitation in recent years, as LOW PERMEABILITY RESERVOIR, ultralow permeable reservoir, high-temperature oil reservoir, progressively enters high water cut rate after waterflooding.Existing profile control method is adopted for this kind of oil reservoir, is difficult to meet the profile control requirement carried out in oil field.But after the exploitation of oil field long-term injecting water, oil bearing reservoir physical property is caused to have a very large change, the particularly generation of Thief zone, stratum with big pore passage, make the comparatively original permeability raising of flooded strata mean permeability, current only advance along most permeable zone in the earth formation, seldom enter middle low permeability layer, namely there is fingering phenomenon, cause water drive swept volume coefficient to decline thus, waterflooding effect is deteriorated, and well water rises very soon, the rate of oil and gas recovery declines.Therefore, in order to eliminate or reduce the harm of injecting water fingering water logging and causing, improve waterflood efficiency, the most frequently used technical measures inject chemical agent in water injection well, chemical agent solidifies or expands and forms physics tamper afterwards, reduce the rate of permeation of most permeable zone band, force injection water to turn to, increase the displacement of reservoir oil effect to low water cut section.And the effect of the amendment used in petroleum industry is exactly improve oil well output, reduce moisture, and improve water drive swept volume, increase workable reserve.Current effective method is all use chemical agent, is namely resulted in blockage to water layer by chemical means, this kind of chemical agent wide in variety, and development is fast, Be very effective.By its ponding to oil reservoir and water layer.But life-time service contaminate environment, infringement stratum.
Summary of the invention
The technical problem that the present invention mainly solves: water layer is resulted in blockage for the chemical means used at present, this kind of chemical agent wide in variety, development is fast, Be very effective, to the ponding of oil reservoir and water layer, but life-time service, non-degradable, contaminate environment, the problem on infringement stratum, provide a kind of preparation method of xanthan gel amendment, the present invention is by acid-soluble for soybean albumen and the mixing of soybean polysaccharide solution, make gel, again gel is mixed with gelatin, add linking agent wherein, initiator, the hybrid reactions such as short jelly, obtained gel profile control agent, finally carry out drying treatment, packing and storing, the gel profile control agent that the present invention prepares can natural degradation, free from environmental pollution, do not damage stratum, not containing prohibitive materials, petroleum reservoir rate of permeation is improved in oil production process, improve oil recovery.
In order to solve the problems of the technologies described above, the technical solution adopted in the present invention is:
(1) measuring 35 ~ 40mL mass concentration is that the acid-soluble protein solution of 20mg/L soybean is in 250mL there-necked flask, mechanical stirring 1 ~ 2h, water-bath is put into after stirring, set temperature is leave standstill 10 ~ 12h at 35 ~ 40 DEG C, after leaving standstill, the material in there-necked flask is poured in separating centrifuge, be separated 15 ~ 20min at 8500 ~ 9000r/min rotating speed, collect supernatant liquor, for subsequent use;
(2) measuring 50 ~ 60mL mass concentration is 35mg/L soybean polysaccharide solution, 3:1 mixes with above-mentioned supernatant liquor by volume, stir to obtain mixed solution, mixed solution pH value is regulated to be 3.8 ~ 4.0 with massfraction 5% hydrochloric acid, mechanical stirring 2 ~ 3h, after stirring terminates, mixed solution is put into high pressure homogenizer, high-pressure homogeneous process 3 ~ 5min under 55 ~ 60MPa, the stirred in water bath heating 1 ~ 2h of 80 ~ 85 DEG C is put into again after process, gelating soln is obtained after heating, gelating soln pH value is regulated to be 3.5 ~ 4.5, and sodium-chlor is added in solution after adjustment, record till sodium chloride concentration reaches 0.1mol/L, gelating soln is put into refrigerator and leave standstill storage 8 ~ 10h at 0 ~ 5 DEG C,
(3) gelating soln after above-mentioned preservation is taken out, mix with gelatin by liquid-solid mass ratio 3:1, after mixing, 1:8 adds distilled water mixing in mass ratio again, system total mass 5 ~ 8%2-acrylamide-2-methylpro panesulfonic acid, 0.02 ~ 0.04%N is added again respectively after mixing, N-methylene-bisacrylamide, 0.1 ~ 0.3% dicumyl peroxide, pass into nitrogen while stirring, total mass 0.01 ~ 0.1% ammonium persulphate is added after stirring 15 ~ 20min, put into water-bath constant temperature stirring reaction 3 ~ 4h at 50 ~ 80 DEG C, after reaction terminates, obtain gel profile control agent;
(4) take out after above-mentioned gel profile control agent being cooled to room temperature, shredded into block, gel piece after shredding is joined in acetone by solid-to-liquid ratio 1:10 and soaks 6 ~ 8h, after soaking, take out dry 10 ~ 12h in the vacuum drying oven of placement 75 ~ 85 DEG C, crushed after being dried, to pack.
Application method of the present invention: after product Injection Well construction the present invention prepared, intake profile makes moderate progress degree, after well construction, in identical diurnal injection situation, water injection pressure rises to 5.7 ~ 6.2MPa from 4.8 original ~ 5.0MPa, oil recovery reaches 59.6 ~ 65.2%, the water-intake rate of gel particle reaches 850 ~ 880g/g, use rear water injection profile to improve, serve shutoff current predominant pathway, expand the object injecting swept volume, and there is good economic benefit.
The invention has the beneficial effects as follows:
(1) gel profile control agent for preparing of the present invention can natural degradation, free from environmental pollution, does not damage stratum, not containing prohibitive materials;
(2) preparation technology of the present invention is simple, easy to use, improves petroleum reservoir rate of permeation in oil production process, improves oil recovery.
Embodiment
First measuring 35 ~ 40mL mass concentration is that the acid-soluble protein solution of 20mg/L soybean is in 250mL there-necked flask, mechanical stirring 1 ~ 2h, water-bath is put into after stirring, set temperature is leave standstill 10 ~ 12h at 35 ~ 40 DEG C, after leaving standstill, the material in there-necked flask is poured in separating centrifuge, be separated 15 ~ 20min at 8500 ~ 9000r/min rotating speed, collect supernatant liquor, for subsequent use, measuring 50 ~ 60mL mass concentration is 35mg/L soybean polysaccharide solution, 3:1 mixes with above-mentioned supernatant liquor by volume, stir to obtain mixed solution, mixed solution pH value is regulated to be 3.8 ~ 4.0 with massfraction 5% hydrochloric acid, mechanical stirring 2 ~ 3h, after stirring terminates, mixed solution is put into high pressure homogenizer, high-pressure homogeneous process 3 ~ 5min under 55 ~ 60MPa, the stirred in water bath heating 1 ~ 2h of 80 ~ 85 DEG C is put into again after process, gelating soln is obtained after heating, gelating soln pH value is regulated to be 3.5 ~ 4.5, and sodium-chlor is added in solution after adjustment, record till sodium chloride concentration reaches 0.1mol/L, gelating soln is put into refrigerator and leave standstill storage 8 ~ 10h at 0 ~ 5 DEG C, gelating soln after preserving is taken out, mix with gelatin by liquid-solid mass ratio 3:1, after mixing, 1:8 adds distilled water mixing in mass ratio again, system total mass 5 ~ 8%2-acrylamide-2-methylpro panesulfonic acid, 0.02 ~ 0.04%N is added again respectively after mixing, N-methylene-bisacrylamide, 0.1 ~ 0.3% dicumyl peroxide, pass into nitrogen while stirring, total mass 0.01 ~ 0.1% ammonium persulphate is added after stirring 15 ~ 20min, put into water-bath constant temperature stirring reaction 3 ~ 4h at 50 ~ 80 DEG C, after reaction terminates, obtain gel profile control agent, take out after gel profile control agent being cooled to room temperature, shredded into block, gel piece after shredding is joined in acetone by solid-to-liquid ratio 1:10 and soaks 6 ~ 8h, after soaking, take out dry 10 ~ 12h in the vacuum drying oven of placement 75 ~ 85 DEG C, crushed after being dried, to pack.
Example 1
First measuring 35mL mass concentration is that the acid-soluble protein solution of 20mg/L soybean is in 250mL there-necked flask, mechanical stirring 1h, water-bath is put into after stirring, set temperature is leave standstill 10h at 35 DEG C, after leaving standstill, the material in there-necked flask is poured in separating centrifuge, be separated 15min at 8500r/min rotating speed, collect supernatant liquor, for subsequent use, measuring 50mL mass concentration is 35mg/L soybean polysaccharide solution, 3:1 mixes with above-mentioned supernatant liquor by volume, stir to obtain mixed solution, mixed solution pH value is regulated to be 3.8 with massfraction 5% hydrochloric acid, mechanical stirring 2h, after stirring terminates, mixed solution is put into high pressure homogenizer, high-pressure homogeneous process 3min under 55MPa, the stirred in water bath heating 1h of 80 DEG C is put into again after process, gelating soln is obtained after heating, gelating soln pH value is regulated to be 3.5, and sodium-chlor is added in solution after adjustment, record till sodium chloride concentration reaches 0.1mol/L, gelating soln is put into refrigerator at 0 DEG C, leave standstill storage 8h, gelating soln after preserving is taken out, mix with gelatin by liquid-solid mass ratio 3:1, after mixing, 1:8 adds distilled water mixing in mass ratio again, system total mass 5%2-acrylamide-2-methylpro panesulfonic acid, 0.02%N is added again respectively after mixing, N-methylene-bisacrylamide, 0.1% dicumyl peroxide, pass into nitrogen while stirring, adds total mass 0.01% ammonium persulphate after stirring 15min, put into water-bath constant temperature stirring reaction 3h at 50 DEG C, after reaction terminates, obtain gel profile control agent, take out after gel profile control agent being cooled to room temperature, shredded into block, the gel piece after shredding is joined in acetone by solid-to-liquid ratio 1:10 and soaks 6h, after soaking, take out dry 10h in the vacuum drying oven of placement 75 DEG C, crushed after being dried, to pack.
After product Injection Well construction the present invention prepared, intake profile makes moderate progress degree, after well construction, in identical diurnal injection situation, water injection pressure rises to 5.7MPa from original 4.8MPa, oil recovery reaches 59.6%, the water-intake rate of gel particle reaches 850g/g, use rear water injection profile to improve, serve shutoff current predominant pathway, expand the object injecting swept volume, and there is good economic benefit.
Example 2
First measuring 38mL mass concentration is that the acid-soluble protein solution of 20mg/L soybean is in 250mL there-necked flask, mechanical stirring 1.5h, water-bath is put into after stirring, set temperature is leave standstill 11h at 37 DEG C, after leaving standstill, the material in there-necked flask is poured in separating centrifuge, be separated 17min at 8700r/min rotating speed, collect supernatant liquor, for subsequent use, measuring 55mL mass concentration is 35mg/L soybean polysaccharide solution, 3:1 mixes with above-mentioned supernatant liquor by volume, stir to obtain mixed solution, mixed solution pH value is regulated to be 3.9 with massfraction 5% hydrochloric acid, mechanical stirring 2.5h, after stirring terminates, mixed solution is put into high pressure homogenizer, high-pressure homogeneous process 4min under 57MPa, the stirred in water bath heating 1.5h of 83 DEG C is put into again after process, gelating soln is obtained after heating, gelating soln pH value is regulated to be 4.0, and sodium-chlor is added in solution after adjustment, record till sodium chloride concentration reaches 0.1mol/L, gelating soln is put into refrigerator at 3 DEG C, leave standstill storage 9h, gelating soln after preserving is taken out, mix with gelatin by liquid-solid mass ratio 3:1, after mixing, 1:8 adds distilled water mixing in mass ratio again, system total mass 6%2-acrylamide-2-methylpro panesulfonic acid, 0.03%N is added again respectively after mixing, N-methylene-bisacrylamide, 0.2% dicumyl peroxide, pass into nitrogen while stirring, adds total mass 0.05% ammonium persulphate after stirring 17min, put into water-bath constant temperature stirring reaction 3.5h at 65 DEG C, after reaction terminates, obtain gel profile control agent, take out after gel profile control agent being cooled to room temperature, shredded into block, the gel piece after shredding is joined in acetone by solid-to-liquid ratio 1:10 and soaks 7h, after soaking, take out dry 11h in the vacuum drying oven of placement 80 DEG C, crushed after being dried, to pack.
After product Injection Well construction the present invention prepared, intake profile makes moderate progress degree, after well construction, in identical diurnal injection situation, water injection pressure rises to 6.0MPa from original 4.9MPa, oil recovery reaches 632%, the water-intake rate of gel particle reaches 870g/g, use rear water injection profile to improve, serve shutoff current predominant pathway, expand the object injecting swept volume, and there is good economic benefit.
Example 3
First measuring 40mL mass concentration is that the acid-soluble protein solution of 20mg/L soybean is in 250mL there-necked flask, mechanical stirring 2h, water-bath is put into after stirring, set temperature is leave standstill 12h at 40 DEG C, after leaving standstill, the material in there-necked flask is poured in separating centrifuge, be separated 20min at 9000r/min rotating speed, collect supernatant liquor, for subsequent use, measuring 60mL mass concentration is 35mg/L soybean polysaccharide solution, 3:1 mixes with above-mentioned supernatant liquor by volume, stir to obtain mixed solution, mixed solution pH value is regulated to be 4.0 with massfraction 5% hydrochloric acid, mechanical stirring 3h, after stirring terminates, mixed solution is put into high pressure homogenizer, high-pressure homogeneous process 5min under 60MPa, the stirred in water bath heating 2h of 85 DEG C is put into again after process, gelating soln is obtained after heating, gelating soln pH value is regulated to be 4.5, and sodium-chlor is added in solution after adjustment, record till sodium chloride concentration reaches 0.1mol/L, gelating soln is put into refrigerator at 5 DEG C, leave standstill storage 10h, gelating soln after preserving is taken out, mix with gelatin by liquid-solid mass ratio 3:1, after mixing, 1:8 adds distilled water mixing in mass ratio again, system total mass 8%2-acrylamide-2-methylpro panesulfonic acid, 0.04%N is added again respectively after mixing, N-methylene-bisacrylamide, 0.3% dicumyl peroxide, pass into nitrogen while stirring, adds total mass 0.1% ammonium persulphate after stirring 20min, put into water-bath constant temperature stirring reaction 4h at 80 DEG C, after reaction terminates, obtain gel profile control agent, take out after gel profile control agent being cooled to room temperature, shredded into block, the gel piece after shredding is joined in acetone by solid-to-liquid ratio 1:10 and soaks 6 ~ 8h, after soaking, take out dry 12h in the vacuum drying oven of placement 85 DEG C, crushed after being dried, to pack.
After product Injection Well construction the present invention prepared, intake profile makes moderate progress degree, after well construction, in identical diurnal injection situation, water injection pressure rises to 6.2MPa from original 5.0MPa, oil recovery reaches 65.2%, the water-intake rate of gel particle reaches 880g/g, use rear water injection profile to improve, serve shutoff current predominant pathway, expand the object injecting swept volume, and there is good economic benefit.
Claims (1)
1. a preparation method for xanthan gel amendment, is characterized in that concrete preparation process is:
(1) measuring 35 ~ 40mL mass concentration is that the acid-soluble protein solution of 20mg/L soybean is in 250mL there-necked flask, mechanical stirring 1 ~ 2h, water-bath is put into after stirring, set temperature is leave standstill 10 ~ 12h at 35 ~ 40 DEG C, after leaving standstill, the material in there-necked flask is poured in separating centrifuge, be separated 15 ~ 20min at 8500 ~ 9000r/min rotating speed, collect supernatant liquor, for subsequent use;
(2) measuring 50 ~ 60mL mass concentration is 35mg/L soybean polysaccharide solution, 3:1 mixes with above-mentioned supernatant liquor by volume, stir to obtain mixed solution, mixed solution pH value is regulated to be 3.8 ~ 4.0 with massfraction 5% hydrochloric acid, mechanical stirring 2 ~ 3h, after stirring terminates, mixed solution is put into high pressure homogenizer, high-pressure homogeneous process 3 ~ 5min under 55 ~ 60MPa, the stirred in water bath heating 1 ~ 2h of 80 ~ 85 DEG C is put into again after process, gelating soln is obtained after heating, gelating soln pH value is regulated to be 3.5 ~ 4.5, and sodium-chlor is added in solution after adjustment, record till sodium chloride concentration reaches 0.1mol/L, gelating soln is put into refrigerator and leave standstill storage 8 ~ 10h at 0 ~ 5 DEG C,
(3) gelating soln after above-mentioned preservation is taken out, mix with gelatin by liquid-solid mass ratio 3:1, after mixing, 1:8 adds distilled water mixing in mass ratio again, system total mass 5 ~ 8%2-acrylamide-2-methylpro panesulfonic acid, 0.02 ~ 0.04%N is added again respectively after mixing, N-methylene-bisacrylamide, 0.1 ~ 0.3% dicumyl peroxide, pass into nitrogen while stirring, total mass 0.01 ~ 0.1% ammonium persulphate is added after stirring 15 ~ 20min, put into water-bath constant temperature stirring reaction 3 ~ 4h at 50 ~ 80 DEG C, after reaction terminates, obtain gel profile control agent;
(4) take out after above-mentioned gel profile control agent being cooled to room temperature, shredded into block, gel piece after shredding is joined in acetone by solid-to-liquid ratio 1:10 and soaks 6 ~ 8h, after soaking, take out dry 10 ~ 12h in the vacuum drying oven of placement 75 ~ 85 DEG C, crushed after being dried, to pack.
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| CN201610120185.9A CN105567200B (en) | 2016-03-03 | 2016-03-03 | A kind of preparation method of biogel profile control agent |
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| CN201610120185.9A CN105567200B (en) | 2016-03-03 | 2016-03-03 | A kind of preparation method of biogel profile control agent |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106590557A (en) * | 2016-11-23 | 2017-04-26 | 中国石油集团长城钻探工程有限公司 | Gel plugging agent for plugging fluid channeling big channel of medium-temperature oil reservoir and preparation method thereof |
| CN107468710A (en) * | 2017-09-25 | 2017-12-15 | 东阿阿胶股份有限公司 | A kind of preparation method of high-quality donkey-hide gelatin |
| CN110485974A (en) * | 2019-04-19 | 2019-11-22 | 中国石油天然气股份有限公司 | A kind of Profile Control in Injection Well method |
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| CN104872498A (en) * | 2015-05-15 | 2015-09-02 | 华南理工大学 | Vegetable protein/soybean polysaccharide nano-emulsion and preparation method thereof |
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| CN1290714A (en) * | 2000-11-09 | 2001-04-11 | 徐月平 | High hydroscopicity resin specially for oil field and agriculture |
| US20120024529A1 (en) * | 2010-07-29 | 2012-02-02 | Van Zanten Ryan | Stimuli-Responsive High Viscosity Pill |
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| CN106590557A (en) * | 2016-11-23 | 2017-04-26 | 中国石油集团长城钻探工程有限公司 | Gel plugging agent for plugging fluid channeling big channel of medium-temperature oil reservoir and preparation method thereof |
| CN107468710A (en) * | 2017-09-25 | 2017-12-15 | 东阿阿胶股份有限公司 | A kind of preparation method of high-quality donkey-hide gelatin |
| CN107468710B (en) * | 2017-09-25 | 2020-11-13 | 东阿阿胶股份有限公司 | Preparation method of high-quality donkey-hide gelatin |
| CN110485974A (en) * | 2019-04-19 | 2019-11-22 | 中国石油天然气股份有限公司 | A kind of Profile Control in Injection Well method |
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Effective date of registration: 20180327 Address after: No. 8 Road, Xindu Xindu District of Chengdu city of Sichuan Province in 610599 Applicant after: Southwest Petroleum University Applicant after: China Petroleum University (East China) Address before: 213155 Changjiang Road in Jiangsu province Changzhou City New District No. 90 (Benny biochemical pharmacy) Applicant before: Chou Yingchao |
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