CN108251092A - Lipopeptid/petroleum sulfonate weak base composition oil displacement agent - Google Patents
Lipopeptid/petroleum sulfonate weak base composition oil displacement agent Download PDFInfo
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- CN108251092A CN108251092A CN201711459328.XA CN201711459328A CN108251092A CN 108251092 A CN108251092 A CN 108251092A CN 201711459328 A CN201711459328 A CN 201711459328A CN 108251092 A CN108251092 A CN 108251092A
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- Prior art keywords
- oil displacement
- lipopeptid
- weak base
- petroleum sulfonate
- displacement agent
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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
- C09K8/584—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 surfactants
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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
Abstract
The present invention relates to a kind of lipopeptid/petroleum sulfonate weak base composition oil displacement agents.Mainly solving the problems, such as existing oil displacement agent, there are oil displacement system cost high recovery rate is low.The lipopeptid/petroleum sulfonate weak base composition oil displacement agent, component and proportioning are as follows by weight percentage：Its component and proportioning are as follows by weight percentage：Petroleum sulfonate 0.15%-0.25%, polymer 1.1-2.2%, weak base are 0.9%-1.2%, lipopeptid 0.15%-0.25%, and surplus is water；The content of each component accounts for the weight percent of oil displacement agent total weight for each component weight.The lipopeptid/petroleum sulfonate weak base composition oil displacement agent system formulation natural core, which improves recovery ratio, can reach more than 18%, hoisting system problem caused by extraction well fouling can preferably be alleviated simultaneously, the difficulty for reducing Ground Processing System reduce the cost of oil displacement system.
Description
Technical field
The present invention relates to a kind of inorganic agent in oil extraction in oil field technical field, especially a kind of lipopeptid/petroleum sulfonate weak base
Composition oil displacement agent.
Background technology
At present, often there are strong base ternary system and weak base ternary system in oil field with oil displacement system.Strong base ternary system is by weight
Alkylbenzenesulfonate, polymer, sodium hydroxide composition, weak base ternary system is by petroleum sulfonate, polymer, sodium carbonate group
Into.Existing weak base ternary system oil displacement system is of high cost, while hoisting system caused by producing well fouling is serious, increases ground
The difficulty of processing system.
Invention content
The invention reside in existing oil displacement agent present in background technology is overcome, there are oil displacement system cost high recovery rate is low
Problem, and a kind of lipopeptid/petroleum sulfonate weak base composition oil displacement agent is provided.The lipopeptid/petroleum sulfonate weak base composition drives
Finish system formulation natural core improve recovery ratio can reach more than 19%, while can preferably alleviate extraction well fouling cause
Hoisting system problem, reduce the difficulty of Ground Processing System, reduce the cost of oil displacement system.
The present invention solves the problems, such as that it can reach by following technical solution：The lipopeptid/petroleum sulfonate weak base composition the displacement of reservoir oil
Agent, component and proportioning are as follows by weight percentage：It is petroleum sulfonate 0.15%-0.25%, polymer 1.1-2.2%, weak
Alkali is 0.9% -1.2%, lipopeptid 0.15% -0.25%, and surplus is water；The content of each component accounts for drive for each component weight
The weight percent of finish total weight.
The polymer is molecular weight for 16,000,000 or 19,000,000 or 25,000,000 polymer, system viscosity 25 --- 35mPa.s；
The weight percent 1.8-2.2% of 16,000,000 polydispersity polymer, the weight percent of 19,000,000 polydispersity polymers
The weight percent 1.1-1.4% of 1.4-1.8%, 25,000,000 polydispersity polymers；The ratio of the petroleum sulfonate and lipopeptid is
1：1；The weak base is sodium carbonate；The polymer is polyacrylamide；The petroleum sulfonate is petroleum sodium sulfonate.
The lipopeptid/petroleum sulfonate weak base composition oil displacement agent, surfactant lipopeptid give full play to two kinds with petroleum sulfonate
The electrical property feature of surfactant and the complementary characteristic of molecular structure, when lipopeptid and petroleum sulfonate ratio are 1:When 1, displacement of reservoir oil body
The interfacial tension of system is best, and it is maximum that interfacial tension reduces amplitude；Wherein sodium carbonate plays maintenance oil displacement system in oil displacement system
The effect of electrolyte concentration balance, certain salinity is provided for ternary system so that interfacial tension is maintained in ultralow range；
It interacts between four kinds of medicaments, collaboration contribution is final so that the property retention of ternary system is in the state of preferably.The body
System's formula makes natural core improve recovery ratio and reaches more than 19% (up to 20%).It can preferably alleviate extraction well simultaneously
Hoisting system problem caused by fouling, the difficulty for reducing Ground Processing System.
It is of the invention to be had the advantages that compared with above-mentioned background technology：The lipopeptid/petroleum sulfonate weak base composition
Oil displacement agent reaches more than 19%, with single mahogany acid when system viscosity is 35mPa.s in natural core raising recovery ratio
Salt weak base ternary system is compared, and recovery ratio improves nearly 1 percentage point, while reduces weak base ternary system petroleum sulfonate surface
The dosage of activating agent saves more than 4% oil displacement system medicament expense, while expands surfactant oil displacement and carry out source range.
Description of the drawings：
1 petroleum sulfonate alkalescent system interfacial activity of attached drawing；
2 petroleum sulfonates of attached drawing/lipopeptid alkalescent system interfacial activity figure；
3 compound system absorption property interfacial tension change curve of attached drawing；
4 compound system of attached drawing dilutes different multiples interfacial tension change curve.
Specific embodiment：
Below in conjunction with specific embodiment, the invention will be further described：
Embodiment 1：
Weigh petroleum sodium sulfonate 0.2%, lipopeptid 0.2%, 16,000,000 molecular weight polyacrylamides 2.2%, sodium carbonate 1.2%,
Surplus is water, and the content of each component accounts for the weight percent of corrosion inhibiter total weight, mixed preparing cost for each component weight
Invention product lipopeptid/petroleum sulfonate weak base composition oil displacement agent.
Comparative example 1
Petroleum sodium sulfonate 0.3%, 16,000,000 molecular weight polyacrylamides 2.2%, sodium carbonate 1.2% are weighed, surplus is mixed for water
Conjunction is configured to mahogany acid salt system oil displacement agent.
Comparative example 2
16,000,000 molecular weight polyacrylamides 2.2% are taken, water 87.8% is hybridly prepared into polymeric system oil displacement agent.
The oil displacement agent prepared in above-described embodiment 1, comparative example 1-2 is added to natural core, when system viscosity is 35mPa.s
1 is shown in Table in natural core oil displacement experiment tables of data (viscosity 35mPa.s)；It measures petroleum sulfonate alkalescent system interfacial activity and sees figure
1, petroleum sulfonate/lipopeptid alkalescent system interfacial activity Fig. 2；Compound system absorption property interfacial tension change curve is shown in Fig. 3；
1 natural core oil displacement experiment tables of data (viscosity 35mPa.s) of table
(1) it is 1 according to petroleum sulfonate/lipopeptid surfactant concentration ratio:1, detection compounding alkalescent system interfacial activity.From
As it can be seen that compared with single petroleum sulfonate weak base ternary system, petroleum sulfonate/lipopeptid compounds weak base body by active figure Fig. 1, Fig. 2
System has wider interfacial activity, occurs 10 in certain regional extent-4The ultralow interfacial tension of the mN/m orders of magnitude.
(2) as seen from Figure 3,0.4%S (S stones:S fat=1:1)+1.2%Na2CO3The compound ligand of ten thousand molecular weight of+2.2%P1600
It is that absorption property is slightly better than single petroleum sulfonate weak base ternary system, absorption number reaches 4 absorption.At adsorption process interface
Tension is slightly below single petroleum sulfonate weak base ternary system.
(3) 0.4%S (S stones:S fat=1:1)+1.2%Na2CO3The compound system of ten thousand molecular weight of+2.2%P1600 dilutes 11 times,
Interfacial tension stills remain in 10-3The mN/m orders of magnitude illustrate that compound system has preferable dilution property.Compound system dilution is different
Multiple interfacial tension change curve is shown in Fig. 4.
(4) 0.4%S (S stones:S fat=1:1)+1.2%Na2CO3The compound system of ten thousand molecular weight of+2.2%P1600, before and after shearing
Interfacial tension still was able to reach 10 in 90 days interfacial tensions-3The mN/m orders of magnitude, 90 days viscosity retention ratios of compound system can reach
More than 70%.Compound system interfacial tension stability data statistic is shown in Table 2；Compound system viscosity stabilization performance data statistics
Table is shown in Table 3.
2 compound system interfacial tension stability data statistic of table
3 compound system viscosity stabilization performance data statistic of table
It can be seen that lipopeptid of the present invention/petroleum sulfonate weak base composition oil displacement agent, when system viscosity is 35mPa.s
Natural core improves recovery ratio and reaches more than 19%, and compared with single petroleum sulfonate weak base ternary system, recovery ratio improves 1
Percentage point, while the dosage of weak base ternary system petroleum sulfonate surfactant is reduced, save oil displacement system medicament expense
More than 4%, while expand surfactant oil displacement and carry out source range.
Claims (6)
1. a kind of lipopeptid/petroleum sulfonate weak base composition oil displacement agent, it is characterised in that：Its component and proportioning are by weight percentage
It is as follows：Petroleum sulfonate 0.15%-0.25%, polymer 1.1-2.2%, weak base is 0.9%-1.2%, lipopeptid 0.15%-
0.25%, surplus is water；The content of each component accounts for the weight percent of oil displacement agent total weight for each component weight.
2. a kind of lipopeptid according to claim 1/petroleum sulfonate weak base composition oil displacement agent, it is characterised in that：It is described
Polymer is molecular weight for 16,000,000 or 19,000,000 or 25,000,000 polyacrylamides, system viscosity 25 --- 35mPa.s.
3. a kind of lipopeptid according to claim 2/petroleum sulfonate weak base composition oil displacement agent, it is characterised in that： 1600
The weight of the weight percent 1.8-2.2% of ten thousand molecular weight polyacrylamide polymer, 19,000,000 molecular weight polyacrylamide polymer
Measure the weight percent 1.1-1.4% of percentage 1.4-1.8%, 25,000,000 molecular weight polyacrylamide polymer.
4. a kind of lipopeptid according to claim 1/petroleum sulfonate weak base composition oil displacement agent, it is characterised in that：It is described
The ratio of petroleum sulfonate and lipopeptid is 1：1.
5. a kind of lipopeptid according to claim 1/petroleum sulfonate weak base composition oil displacement agent, it is characterised in that：It is described
Weak base is sodium carbonate.
6. a kind of lipopeptid according to claim 1/petroleum sulfonate weak base composition oil displacement agent, it is characterised in that：It is described
Petroleum sulfonate is petroleum sodium sulfonate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711459328.XA CN108251092A (en) | 2017-12-28 | 2017-12-28 | Lipopeptid/petroleum sulfonate weak base composition oil displacement agent |
Applications Claiming Priority (1)
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|---|---|---|---|
| CN201711459328.XA CN108251092A (en) | 2017-12-28 | 2017-12-28 | Lipopeptid/petroleum sulfonate weak base composition oil displacement agent |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111763245A (en) * | 2019-04-02 | 2020-10-13 | 中国石油天然气股份有限公司 | Sodium dodecyl sulfonate-bacitracin compound and composite oil displacement agent |
| CN113565480A (en) * | 2021-06-15 | 2021-10-29 | 大庆油田有限责任公司 | Lipopeptide-containing composite oil displacement agent and use method thereof |
| CN114836188A (en) * | 2022-04-21 | 2022-08-02 | 大庆华理生物技术股份有限公司 | Biological compound oil displacement system and application thereof |
| CN115232610A (en) * | 2021-04-23 | 2022-10-25 | 中国石油天然气股份有限公司 | Surfactant compound system, preparation method and application thereof |
| CN116410724A (en) * | 2021-12-31 | 2023-07-11 | 中国石油天然气股份有限公司 | Oil displacement agent and preparation method and application thereof |
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| US20020056405A1 (en) * | 2000-05-12 | 2002-05-16 | Ligno Tech Usa, Inc. | Set retarders for foamed cements |
Non-Patent Citations (2)
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| 佟智博: ""生物表面活性剂的复配性能评价及渗流规律研究"", 《中国优秀硕士学位论文全文数据库，工程科技Ⅰ辑》 * |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111763245A (en) * | 2019-04-02 | 2020-10-13 | 中国石油天然气股份有限公司 | Sodium dodecyl sulfonate-bacitracin compound and composite oil displacement agent |
| CN111763245B (en) * | 2019-04-02 | 2022-05-10 | 中国石油天然气股份有限公司 | Sodium dodecyl sulfonate-bacitracin compound and composite oil displacement agent |
| CN115232610A (en) * | 2021-04-23 | 2022-10-25 | 中国石油天然气股份有限公司 | Surfactant compound system, preparation method and application thereof |
| CN113565480A (en) * | 2021-06-15 | 2021-10-29 | 大庆油田有限责任公司 | Lipopeptide-containing composite oil displacement agent and use method thereof |
| CN116410724A (en) * | 2021-12-31 | 2023-07-11 | 中国石油天然气股份有限公司 | Oil displacement agent and preparation method and application thereof |
| CN114836188A (en) * | 2022-04-21 | 2022-08-02 | 大庆华理生物技术股份有限公司 | Biological compound oil displacement system and application thereof |
| CN114836188B (en) * | 2022-04-21 | 2023-11-07 | 大庆华理生物技术股份有限公司 | Biological composite oil displacement system and application thereof |
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Application publication date: 20180706 |