Logging Evaluation of Low Resistivity Reservoir in Triassic, Tahe Oilfield
详细信息
- 责任者：Zhang Haiyan (Research Institute of Exploration and Development ; Northwest Oilfield Company ; SINOPEC ; Urumqi 830011 ; China) ; Wang Dongliang
- 刊名：Fault-Block Oil and Gas Fields
- 出版年：2010
- 卷期：17(4)
- 关键词：低阻油气藏 ; low resistivity reservoir ; 地球物理测井 ; geophysical logging ; 塔里木盆地 ; Tarim Basin
- 页码：p.513-516
- 图表：2 illus., 5 refs.
- 分类号：1003
- issnNo：ISSN1005-8907
- isbnNo：CN41-1219/TE
摘要
The genesis of oil and gas reservoir is analyzed in Triassic of Tahe Oilfield based on the data analysis of core, formation water and NMR experiment. The authors discover that iron pyrites is locally distributed and the content is less. Therefore, the possibility that the conductivity of iron pyrites leads to low resistivity reservoir can be excluded. High salinity of formation water, fine lithology, high irreducible water saturation, additional conduction of clay and small trap range of reservoir lithology are the main reasons of low resistivity reservoir form. Therefore, the low resistivity reservoir can be identified through the method of resistivity combining with lithology factor, pore structure factor and resistivity value and resistivity invasion. The series parameter models, such as average pore throat radius, cation exchange calculation and saturation, are obtained by the analysis of core data and NMR experiment data.