摘要
随着各油田对油气资源勘探开发综合效益的日益重视和钻井工艺技术的不断提高,利用水平井开发油气藏的规模不断扩大,水平井技术得到长足发展。水平井地质导向技术是直接关系到水平井成功与否的关键技术。结合涠洲油田地质特点,通过实例分析,介绍了油层着陆和水平井地质导向过程中的地层对比法、井身轨迹跟踪图法、随钻测井(LWD)地质导向法等技术方法,通过结合精确地质模型的建立、随钻过程中围岩储层的识别及现场录井等技术,摸索出水平井着陆与水平段钻进的主要技术流程与导向原则,提出了钻头位置、地层倾角及地层视厚度的判定方法;并在此基础上,完成了地质导向监测系统的构建,实现了油田地质、钻井、录井实时数据的资源共享,保证了水平井精确中靶及最大限度地钻遇储集层,并对地质导向过程中遇到的问题进行总结。
With paying more attention on comprehensive benefits of oil and gas resources exploration and development and continuous improvement of drilling technology in each oilfield,the scale of horizontal well development in oil and gas reservoirs has been expanding and the technology of horizontal well has been made rapid progress.Geosteering is the key technology,which is directly related to the success of the horizontal well.According to the geological characteristics of Weizhou oilfield,the paper introduces the application of oil-oriented landing and geological stratigraphic correlation method,well tracking chart method,LWD geosteering method in the process of the horizontal well drilling by the analysis of the actual case.By combining accurate geologic modeling,identifying surrounding reservoir while drilling and logging technology,the main technical process and the geosteering principle of the horizontal well landing and horizontal interval drilling have been summarized,and the judging methods of drilling bit position,strata dip,and apparent formation thickness have been presented.Moreover,the construction of geosteering monitor system is built,and resource sharing of real-time data of oil field geology,well drilling and well logging is realized,and the accuracy of horizontal well target is ensured.The problems encountered during the process of the geosteering are summed up.
出处
《中外能源》
CAS
2011年第9期43-46,共4页
Sino-Global Energy
关键词
水平井
地质导向
地层对比
LWD导向
靶点
horizontal well
geosteering
stratigraphic correlation
LWD geosteering
target
