Efficiency Evaluation of Low Salinity Water Flooding(LSWF)in
发布时间:2024-03-15 19:08
碳酸盐岩油藏通常是裂缝性、油湿性的,是所含原油储量最高(超过60%)的油藏类型。在过去的十数年间,由于低盐度水驱相较其他提高采收率技术具有经济低廉、生态友好等特征,其被认为是一种逐渐发展起来的二采或三采阶段的提高采收率技术。不幸的是,LSWF本质上仍然是一个模糊的概念,其关键机理虽然经过了激烈的争论和试验,但仍然没有得到普遍认同。更有趣的事实是,与砂岩油藏相比,人们对低盐度水驱在碳酸盐岩油藏中的作用的明确机理的研究较少,甚至不太了解。本文的目的是提出一个实验设计,以实验尺度下评估低盐度水驱在碳酸盐岩地层的有效性。明确限定了使用人造碳酸盐岩岩心和切片进行岩心驱油和接触角测量实验。此外,本研究仅限于用将地层水稀释得到的一系列盐水来确定最佳盐度,并试图指出低盐度水驱效应背后的基本机理。本研究共进行了18次实验,包括12次岩心驱油和6次接触角测量实验。此外,本研究还用了来自中东碳酸盐岩储层的死原油样品和八种合成盐水(FW、2FW、10FW、20FW、50FW、100FW、200FW和500FW)和一种蒸馏水。岩心驱油实验旨在通过评价采收率的增加值来评价碳酸盐岩中低盐度水驱的有效性,并试图通过油...
【文章页数】:80 页
【学位级别】:硕士
【文章目录】:
摘要
ABSTRACT
Chapter1 Introduction
1.1 Research Background
1.2 Problem Statement
1.3 Motivation and Significance of the Study
1.4 Research Objectives
1.4.1 General Objectives
1.5 Scope,Limitations and Implications of the Study
Chapter2 Literature Review
2.1 Overview of Crude Oil/Brine/Rock(COBR)System
2.2 Influence of Temperature,Surfactants and Potential Determining Ions(PDIs)on LSWF Effect
2.3 Influence of Brine Dilution(Lessening the Ionic strength/Salinity)on LSWF Effect
2.4 Influence of Carbonate Rock Type and Mineralogy on LSWF Effect
2.5 Proposed LSWF Mechanisms on Carbonate Rocks
Chapter3 Experimental Materials
3.1Cores
3.2 Core Cleaning,Preparation and Handling Procedure
3.3 Core plug Properties
3.4 Crude Oil
3.5 Brine Solutions
Chapter4 Methodology
4.1 Core Flooding Experiments
4.1.1 Core Flooding Experimental Setup
4.1.2 Core Flooding Experimental Procedure
4.2 Oil/Water Relative Permeability Measurements
4.3 Contact Angle Measurements
4.3.1 Contact Angle Measurement Setup
4.3.2 Contact Angle Measurement Procedure
Chapter5 Results and Discussion
5.1 Core Flooding Experimental Results
5.2 Contact Angle Measurements Results
Chapter6 Conclusion and Recommendations
REFERENCES
ACKNOWLEDGEMENT
本文编号:3928731
【文章页数】:80 页
【学位级别】:硕士
【文章目录】:
摘要
ABSTRACT
Chapter1 Introduction
1.1 Research Background
1.2 Problem Statement
1.3 Motivation and Significance of the Study
1.4 Research Objectives
1.4.1 General Objectives
1.5 Scope,Limitations and Implications of the Study
Chapter2 Literature Review
2.1 Overview of Crude Oil/Brine/Rock(COBR)System
2.2 Influence of Temperature,Surfactants and Potential Determining Ions(PDIs)on LSWF Effect
2.3 Influence of Brine Dilution(Lessening the Ionic strength/Salinity)on LSWF Effect
2.4 Influence of Carbonate Rock Type and Mineralogy on LSWF Effect
2.5 Proposed LSWF Mechanisms on Carbonate Rocks
Chapter3 Experimental Materials
3.1Cores
3.2 Core Cleaning,Preparation and Handling Procedure
3.3 Core plug Properties
3.4 Crude Oil
3.5 Brine Solutions
Chapter4 Methodology
4.1 Core Flooding Experiments
4.1.1 Core Flooding Experimental Setup
4.1.2 Core Flooding Experimental Procedure
4.2 Oil/Water Relative Permeability Measurements
4.3 Contact Angle Measurements
4.3.1 Contact Angle Measurement Setup
4.3.2 Contact Angle Measurement Procedure
Chapter5 Results and Discussion
5.1 Core Flooding Experimental Results
5.2 Contact Angle Measurements Results
Chapter6 Conclusion and Recommendations
REFERENCES
ACKNOWLEDGEMENT
本文编号:3928731
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