摘要
低渗透油藏,指地层渗透率较低的油藏,通常渗透率小于0.1mD。这类油藏储层孔隙度低、孔隙连通性差,使得油井在注入钻井液的过程中容易发生漏失现象。此外,低渗透油藏地层岩石力学性质较差,易发生漏失、溢流等问题,钻井液在防漏堵漏过程中起到了关键作用。其参数设计合理与否直接影响到整个防漏堵漏工艺的有效性。主要的影响因素包括钻井液的粘度、密度、流变性能以及过滤性能等。通过对这些参数进行详细分析和优化,可以提高防漏堵漏钻井液的性能和效果。本文主要针对油田低渗透油藏防漏堵漏钻井液技术进行了深入分析。通过研究不同类型的低渗透油藏特性及钻井液的各种参数,分析了防漏堵漏钻井液技术在低渗透油藏中的应用优势。在此基础上,提出了一些改进措施和建议,以期为油田低渗透油藏的钻井作业提供参考和指导。
Low permeability oil reservoir refers to an oil reservoir with low formation permeability and with a permeability less than 0.1mD.This type of reservoir has low porosity and poor pore connectivity,making it easy for oil wells to experience leakage during the injection of drillingfluid.In addition,the rock mechanics properties of low-permeability reservoirs are poor,making them prone to problems such as leakage and overflow.Drillingfluid plays a crucial role in the process of preventing and plugging leaks.The rationality of its parameter design directly affects the effectiveness of the entire leak prevention and plugging process.The main influencing factors include the viscosity,density,rheological properties,and filtration performance of drilling fluid.By analyzing and optimizing these parameters in detail,the performance and effectiveness of leak prevention and plugging drillingfluid can be improved.This article mainly focuses on the in-depth analysis of drillingfluid technology for leak prevention and plugging in low-permeability oil reservoirs in oilfields.By studying the characteristics of different types of low-permeability reservoirs and various parameters of drilling fluids,the application advantages of leak prevention and plugging drilling fluid technology in low-permeability reservoirs were analyzed.On this basis,some improvement measures and suggestions were proposed to provide reference and guidance for drilling operations in low-permeability oil reservoirs in the oilfield.
作者
何斌
He Bin(Tanggu Operation Company,Oilfield Chemistry Division,CNOOC Oilfield Services Co.,Ltd.,Tianjin 300452)
出处
《石化技术》
CAS
2024年第5期114-116,共3页
Petrochemical Industry Technology
关键词
低渗透油藏
防漏堵漏钻井液
技术分析
Low permeability oil reservoir
Leak proof and plugging drillingfluid
Technical analysis
作者简介
何斌,男,甘肃省天水市人,中级工程师,研究方向:油气田化学。
