CN108342189A - A kind of environment-friendly type oil extraction in oil field compound and its application based on biological polyoses - Google Patents
A kind of environment-friendly type oil extraction in oil field compound and its application based on biological polyoses Download PDFInfo
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- CN108342189A CN108342189A CN201711229643.3A CN201711229643A CN108342189A CN 108342189 A CN108342189 A CN 108342189A CN 201711229643 A CN201711229643 A CN 201711229643A CN 108342189 A CN108342189 A CN 108342189A
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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
- C09K8/58—Compositions for enhanced recovery methods for obtaining hydrocarbons, i.e. for improving the mobility of the oil, e.g. displacing fluids
- C09K8/588—Compositions for enhanced recovery methods for obtaining hydrocarbons, i.e. for improving the mobility of the oil, e.g. displacing fluids characterised by the use of specific polymers
Abstract
The invention belongs to oil exploitation industry technical fields, and in particular to a kind of oil extraction in oil field compound and its application.Environment-friendly type oil extraction in oil field compound of the present invention, including following components and mass fraction：Scleroglucan 20~50%, welan gum 20~40%, xanthans 5~20%, curdlan 5~15%, polyacrylamide 0~10%, succinic acid 1~10% and sodium sulfite 1~10%.Compound of the present invention has high temperature resistant salt-tolerant trait outstanding, is ideal environment-friendly type, heatproof, the auxiliary agent of resistance to high salt oil production, meets the development and application requirement of current oil recovery industry, has good application value and foreground.
Description
Technical field
The invention belongs to oil exploitation industry technical fields, and in particular to a kind of oil extraction in oil field based on biological polyoses is with again
Close object and its application.
Background technology
Currently, domestic many water controlled fields all have been enter into the middle and later periods.The period is due to the anisotropism of reservoir and unfavorable
Mobility ratio, so that the stratum after water drive is remained a large amount of remaining oil, common manifestation is well water height, low output, opens
The deficiency in economic performance adopted.At the same time, international and domestic market increases the demand of oil year by year again.In order to ensure oil field
Contradiction between stable yields, volume increase and solution oil production rate and the market demand, the demand of various oil recovery auxiliary agents steeply rise.
In recent years, with the fast development of economic society, the gradual reinforcement of environmental protection consciousness and dynamics, with polyphosphazene polymer
The application for closing the chemical recovery auxiliary agent that object polyacrylamide is representative is limited year by year, and using xanthans, guar gum, sesbania gum as generation
The research of the biopolymer of table is increasingly becoming hot spot with application.Using guar gum and sesbania gum as the plant high score of representative
For sub- polymer due to being limited to the conditions such as weather, region, yield is poor with stability, promotes and applies limited notable；Xanthan
The biopolymer that glue, welan gum, scleroglucan, curdlan etc. are synthesized by microbial metabolism, according to now with skill
Art reports that they have different application characteristics, but the defect for having its present in terms of tertiary oil production in oil field：Scleroglucan and
Curdlan heat-resistant salt-resistant is good, but usage amount is high, and application cost is high, it is difficult to promote；Xanthans application cost is low
But heat-resistant salt-resistant is bad, using limited；Although welan gum usage amount is low, heat-resistant salt-resistant is preferable, due to the limit of production efficiency
System, application cost is also higher, therefore only relies on single or two kinds of biopolymers organic double compounds and be difficult to meet oil field three
The secondary integration requirement recovered the oil for related auxiliaries material.
Invention content
To solve the above-mentioned problems, the present invention provides a kind of environment-friendly type oil extraction in oil field based on biopolymer
With compound, with high temperature resistant, resistance to high salt, wide adaptation range, oil recovery factor significant advantage outstanding is improved, be a kind of use
The good auxiliary agent of oil recovery factor is improved in oil field.
To achieve the above object, the present invention provides the following technical solutions：
The first aspect of the present invention provides a kind of environment-friendly type oil extraction in oil field compound, including following components and quality point
Number：
The second aspect of the present invention provides a kind of environment-friendly type oil extraction in oil field and compound is used to be helped under the high temperature conditions as recovering the oil
The application of agent.
Third aspect of the present invention provides a kind of environment-friendly type oil extraction in oil field and compound is used to be helped under high salt conditions as recovering the oil
The application of agent.
The present invention with scleroglucan and welan gum it is compound based on tackifier, it is auxiliary that xanthans with polyacrylamide is complex as you
It is filling tackifier to help reinforcing tackifier, curdlan, and for succinic acid as supporting ＆ stablizing agent, inorganic salts sodium sulfite is that antioxygen is steady
Determine agent；Each component interaction of the present invention, can play synergistic effect.
Compared with the prior art, technical scheme of the present invention has the advantages that：
(1) oil recovery made from organic assembling of the present invention by several functions substance is up to 130 with compound temperature tolerance
℃；
(2) oil recovery made from organic assembling of the present invention by several functions substance is up to 150 with compound salt tolerance,
000ppm；
(3) basket displacement of reservoir oil simulated experiment the result shows that, the present invention is based on the oil extraction in oil field of biopolymer use
Compound can significantly improve the displacement efficiency of displacement of reservoir oil fluid, to improve crude oil in-place oil whole recovery ratio, be one
The novel efficient oil displacing material of kind.
Specific implementation mode
It is noted that described further below be all exemplary, it is intended to provide further instruction to the present invention.Unless another
It indicates, all technical and scientific terms used herein has usual with general technical staff of the technical field of the invention
The identical meanings of understanding.
It should be noted that term used herein above is merely to describe specific implementation mode, and be not intended to restricted root
According to exemplary embodiments of the present invention.As used herein, unless the context clearly indicates otherwise, otherwise singulative
It is also intended to include plural form, additionally, it should be understood that, when in the present specification using term "comprising" and/or " packet
Include " when, indicate existing characteristics, step, operation, component and/or combination thereof.
In order to overcome the biopolymer mentioned in background technology to exist in the application as chemical recovery auxiliary agent
Defect, the first aspect of the present invention provides a kind of environment-friendly type oil extraction in oil field compound, including following components and quality point
Number：
In currently preferred technical solution, the environment-friendly type oil extraction in oil field compound, including following components and matter
Measure score：
In currently preferred technical solution, the scleroglucan molecular weight is 105~106Da：
In currently preferred technical solution, the molecular weight of the welan gum is 105~106Da。
In currently preferred technical solution, the Molecular Weight of Xanthan Gum is 106~107Da：
In currently preferred technical solution, the Molecular Weight for Polyacrylamide is 106~107Da。
In currently preferred technical solution, the curdlan molecular weight is 104~105Da。
The present invention by different molecular weight (high, normal, basic small), have different activities group (- OH ,-COOH,>C=O, [SO3
]2-、-NH2Deng) substance formd based on biopolymer (scleroglucan, welan gum, xanthan by organic assembling
Glue, curdlan) oil extraction in oil field compound, compared with the prior art have high temperature resistant outstanding, it is resistance to it is with high salt, dosage is low,
Environmentally protective biodegradable series of characteristics, meet very much current oil field for oil recovery auxiliary agent performance, cost, dosage,
Many requirements such as environmental protection have significant progress.
The second aspect of the present invention provides a kind of environment-friendly type oil extraction in oil field and compound is used to be helped under the high temperature conditions as recovering the oil
The application of agent.
Third aspect of the present invention provides a kind of environment-friendly type oil extraction in oil field and compound is used to be helped under high salt conditions as recovering the oil
The application of agent.
In currently preferred technical solution, the use concentration range of oil recovery compound is 500~5,000ppm.
In order to enable those skilled in the art can clearly understand technical scheme of the present invention, below with reference to tool
The embodiment of the body technical solution that the present invention will be described in detail.
A kind of environment-friendly type oil extraction in oil field compound based on biopolymer of embodiment 1
The environment-friendly type oil extraction in oil field compound, is made of following components and mass fraction：
The scleroglucan molecular weight is 105~106Da；The molecular weight of the welan gum is 105~106Da；The xanthan
Xanthan molecule amount is 106~107Da；The Molecular Weight for Polyacrylamide is 106~107Da；The curdlan molecular weight is 104~
105Da。
The preparation method of the environment-friendly type oil extraction in oil field compound is：Scleroglucan 350g, welan gum are weighed respectively
350g, xanthans 50g, curdlan 70g, polyacrylamide 20g, succinic acid 80g, sodium sulfite 80g are uniformly mixed, and must be based on
The environment-friendly type oil extraction in oil field compound 1000g of biopolymer, is sealed up for safekeeping spare.
A kind of environment-friendly type oil extraction in oil field compound based on biopolymer of embodiment 2
The environment-friendly type oil extraction in oil field compound, is made of following components and mass fraction：
The scleroglucan molecular weight is 105~106Da；The molecular weight of the welan gum is 105~106Da；The xanthan
Xanthan molecule amount is 106~107Da；The Molecular Weight for Polyacrylamide is 106~107Da；The curdlan molecular weight is 104~
105Da。
The preparation method of the environment-friendly type oil extraction in oil field compound is：Scleroglucan 500g, welan gum are weighed respectively
200g, xanthans 100g, curdlan 100g, polyacrylamide 80g, succinic acid 10g, sodium sulfite 10g are uniformly mixed, and obtain base
In the environment-friendly type oil extraction in oil field compound 1000g of biopolymer, seal up for safekeeping spare.
A kind of environment-friendly type oil extraction in oil field compound based on biopolymer of embodiment 3
The environment-friendly type oil extraction in oil field compound, is made of following components and mass fraction：
The scleroglucan molecular weight is 105~106Da；The molecular weight of the welan gum is 105~106Da；The xanthan
Xanthan molecule amount is 106~107Da；The Molecular Weight for Polyacrylamide is 106~107Da；The curdlan molecular weight is 104~
105Da。
Scleroglucan 200g, welan gum 200g, xanthans 200g, curdlan 150g, polyacrylamide are weighed respectively
50g, succinic acid 100g, sodium sulfite 100g are uniformly mixed, and are obtained the environment-friendly type oil extraction in oil field based on biopolymer and are used
Compound 1000g is sealed up for safekeeping spare.
Environment-friendly type oil extraction in oil field compound of the test example 1 based on biopolymer and its constituent temperature tolerance
It can compare
Scleroglucan, welan gum, xanthans, polyacrylamide, compound point described in curdlan and embodiment 1 are taken respectively
It is not configured to the aqueous solution of 3,000ppm, fully uses Brookfield DV2-T viscosmeters (62# rotors, 60r/ after dissolving
Min), measure respectively each solution 25 DEG C of initial viscosity and 130 DEG C stand heat preservation for 24 hours the viscosity after postcooling to 25 DEG C (see
Table 1).
1 compound of table is compared with its constituent heat resistance (one)
As shown in Table 1, each single component of scleroglucan, welan gum, xanthans, polyacrylamide is after being heated to 130 DEG C
Viscosity declines 2.65%, 29.34%, 37.18% and 18.01% respectively, and curdlan viscosity increases；And the present invention is implemented
Compound viscosity described in example 1 improves 8.64%.
Gained in scleroglucan, welan gum, xanthans, polyacrylamide, curdlan and embodiment 1 is taken to be configured to respectively
3,000ppm aqueous solution fully uses Brookfield DV2-T viscosmeters (62# rotors, 60r/min) after dissolving, surveys respectively
Viscosity (be shown in Table 2) of fixed each solution under the conditions of after 25 DEG C of initial viscosity and 95 DEG C stand heat preservation 72h at 95 DEG C.
2 compound of table is compared with its constituent heat resistance (two)
As shown in Table 2, each single component of scleroglucan, welan gum, xanthans, polyacrylamide sticks after being heated to 95 DEG C
Degree declines 0.66%%, 14.18%, 25.96% and 29.81% respectively, and curdlan viscosity increases；And the present invention is implemented
Compound viscosity described in example 1 improves 13.58%.
Environment-friendly type oil extraction in oil field compound of the test example 2 based on biopolymer and its constituent salt tolerance
It can compare
Take that scleroglucan, welan gum, xanthans, polyacrylamide, compound is matched described in curdlan and embodiment 1 respectively
It is configured to the solution of 3,000ppm with the water of salinity 150,000ppm, fully uses Brookfield DV2-T viscositys after dissolving
It counts (62# rotors, 60r/min), measures viscosity (be shown in Table 3) of each solution at 25 DEG C respectively.
3 compound of table is compared with its constituent salt resistant character
As shown in Table 3, scleroglucan, welan gum, xanthans, polyacrylamide are in salinity 150,000ppm aqueous solutions
Viscosity has dropped 1.32%, 28.61%, 34.94% and 53.42% respectively compared with initial viscosity；And the embodiment of the present invention 1
Compound viscosity has dropped 6.79%.
By with above-mentioned experimental result it is found that the present invention environment-friendly type oil extraction in oil field compound compared with its each component,
There is advantage more outstanding in terms of temperature tolerance, condition of high temperature viscosity and salt tolerance, can be shown by compounding the compound formed
The defect for making up each independent component is write, wherein significantly improving with the viscosity of (95 DEG C) at high operating temperatures especially and (rising 13.58%)
For most significant feature, illustrate that compound of the present invention is a kind of resistance to oilfield oil extraction additive with high salt of innovative high temperature resistant, has very wide
Wealthy field use foreground.
3 basket displacement object mould oil displacement experiment of test example
Basket displacement test is carried out with compound using the environment-friendly type oil extraction in oil field described in embodiment 2, by compound -2
It is configured to the displacement of reservoir oil fluid of concentration 2200ppm with oil field mock water (salinity 70,000ppm), rock core is carried out under the conditions of 98 DEG C
The pipe displacement of reservoir oil is control with oil field with single simulation water drive, carries out the quasi- water drive in moulding oil field first and then carries out displacement using compound -2,
It the results are shown in Table 4.
4 compound of table is compared with water drive basket displacement test
By the above rock core displacement test result it is found that the environment-friendly type oil using the present invention based on biopolymer
Oil recovery compound in field carries out rock core displacement under the conditions of simulation oil field stratum high-temperature (98 DEG C), (70,000ppm) with high salt, drives
It is all remarkably higher than single water drive for efficiency, the total recovery percent of reserves of crude oil, compared with single water drive, averagely improves displacement efficiency
16.65%；The total recovery percent of reserves of crude oil averagely improves 18.48%, it is seen that environment-friendly type oil extraction in oil field of the present invention is a kind of with compound
The significant oil displacement assistant of application effect under high temperature, high salt conditions.
In short, oil extraction in oil field of the present invention is ideal environment-friendly type, heatproof, the auxiliary agent of resistance to high salt oil production, symbol with compound
The development and application requirement of oil recovery industry before being fated has good application value and foreground.
Claims (10)
1. a kind of environment-friendly type oil extraction in oil field compound, which is characterized in that including following components and mass fraction：
2. environment-friendly type oil extraction in oil field compound according to claim 1, which is characterized in that including following components and mass fraction：
3. environment-friendly type oil extraction in oil field compound according to claim 1 or claim 2, which is characterized in that the scleroglucan molecule
Amount is 105~106Da。
4. environment-friendly type oil extraction in oil field compound according to claim 1 or claim 2, which is characterized in that the molecule of the welan gum
Amount is 105~106Da。
5. environment-friendly type oil extraction in oil field compound according to claim 1 or claim 2, which is characterized in that the Molecular Weight of Xanthan Gum
It is 106~107Da。
6. environment-friendly type oil extraction in oil field compound according to claim 1 or claim 2, which is characterized in that the polyacrylamide point
Son amount is 106~107Da。
7. environment-friendly type oil extraction in oil field compound according to claim 1 or claim 2, which is characterized in that the curdlan molecule
Amount is 104~105Da。
8. environment-friendly type oil extraction in oil field according to claim 1 or claim 2 uses compound answering as oil recovery auxiliary agent under the high temperature conditions
With.
9. environment-friendly type oil extraction in oil field according to claim 1 or claim 2 uses compound answering as oil recovery auxiliary agent under high salt conditions
With.
10. applying according to claim 8 or claim 9, which is characterized in that the use concentration range of the compound is 500~5,
000ppm。
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Cited By (6)
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| CN110066651A (en) * | 2019-04-30 | 2019-07-30 | 中国石油大学(华东) | Biological oil displacement agent Weilan gum and its oil displacement system |
| CN110511731A (en) * | 2019-08-22 | 2019-11-29 | 山东省食品发酵工业研究设计院 | A kind of environment-friendly type oil field profile control agent and its preparation method and application |
| CN110563855A (en) * | 2019-10-12 | 2019-12-13 | 山东省食品发酵工业研究设计院 | Synthesis method of self-assembled nanoparticle material-octadecanoyl octadecanoic acid pullulan polysaccharide ester |
| CN110684518A (en) * | 2019-10-22 | 2020-01-14 | 中国石油化工股份有限公司 | Biological polysaccharide movable gel for oil displacement and preparation method thereof |
| CN110699059A (en) * | 2019-10-22 | 2020-01-17 | 中国石油化工股份有限公司 | Biological polysaccharide gel for oil displacement and preparation method and application thereof |
| CN113845894A (en) * | 2021-09-01 | 2021-12-28 | 山东省食品发酵工业研究设计院 | Temperature-resistant polymer based on low-pyruvate-group xanthan gum and application thereof |
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| CN110066651A (en) * | 2019-04-30 | 2019-07-30 | 中国石油大学(华东) | Biological oil displacement agent Weilan gum and its oil displacement system |
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| CN110511731A (en) * | 2019-08-22 | 2019-11-29 | 山东省食品发酵工业研究设计院 | A kind of environment-friendly type oil field profile control agent and its preparation method and application |
| CN110563855A (en) * | 2019-10-12 | 2019-12-13 | 山东省食品发酵工业研究设计院 | Synthesis method of self-assembled nanoparticle material-octadecanoyl octadecanoic acid pullulan polysaccharide ester |
| CN110684518A (en) * | 2019-10-22 | 2020-01-14 | 中国石油化工股份有限公司 | Biological polysaccharide movable gel for oil displacement and preparation method thereof |
| CN110699059A (en) * | 2019-10-22 | 2020-01-17 | 中国石油化工股份有限公司 | Biological polysaccharide gel for oil displacement and preparation method and application thereof |
| CN113845894A (en) * | 2021-09-01 | 2021-12-28 | 山东省食品发酵工业研究设计院 | Temperature-resistant polymer based on low-pyruvate-group xanthan gum and application thereof |
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