天津地热钻孔中奥陶系各组分层划分的方法探讨
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摘要
针对地热钻孔地层划分的困难,本文分析了天津地区奥陶系层型剖面标志特征和分层界线,论述了岩屑录井的要求和奥陶系的录井特征及测井曲线识别特征。通过研究地层岩性与测井曲线的对应关系,建立了奥陶系各组地球物理测井的物性标志特征。依据区域地层特征和沉积旋回理论,结合岩屑录井,辅以地球物理测井,可以大致划分出天津市奥陶系各组分层界线。
Aming at solving the difficulties of the stratigraphic division for geothermal drilling, this paper analyzes the sign features of the stratotype section and layered boundary, discusses the requirements,characteristics and identification of cutting loggings for the Ordovician system in Tianjin. Meanwhile, based on the study of the relationship between the lithology and logging curve, this paper established the physical nature of the geophysical well logging signal feature. According to the regional stratigraphic characteristics and sedimentary cycle theory, combining with the cutting loggings and geophysical loggings, the paper roughly proposes the boundary of each stratum of the Ordovician in Tianjin.
Aming at solving the difficulties of the stratigraphic division for geothermal drilling, this paper analyzes the sign features of the stratotype section and layered boundary, discusses the requirements,characteristics and identification of cutting loggings for the Ordovician system in Tianjin. Meanwhile, based on the study of the relationship between the lithology and logging curve, this paper established the physical nature of the geophysical well logging signal feature. According to the regional stratigraphic characteristics and sedimentary cycle theory, combining with the cutting loggings and geophysical loggings, the paper roughly proposes the boundary of each stratum of the Ordovician in Tianjin.
引文
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[5]崔树清,王福生,董双波.钻井地质[M].天津:天津大学出版社,2008.
[6]纪友亮.油气田地下地质学[M].上海:同济大学出版社.2007.
[7]柯柏林.水井钻探岩屑地质编录方法探讨[J].城市地质,2007,2(4):33-36.
[8]江国胜,赵苏民,李虎,等.天津市奥陶系热储赋水规律研究[R].天津地热勘查开发设计院.2015.
[9]刘传虎.潜山油气藏概论[M].北京:石油工业出版社,2006.
[10]洪有密.测井原理与综合解释[M].北京:石油大学出版社,1992.