UNDERSTANDING OF VISCOUS OIL RESERVOIR OF LOW RESISTIVITY IN FENGCHENG AREA OF KARAMAY OILFIELD

Abstract

Abstract: A Comprehensive study of geologic characteristics of low-resistivity viscous oil reservoir in Well Zhongjian 3 in Fengcheng area showed that low-resistivity viscous oil formation is mostly composed of sandstone with high clay content, and mudstone interbedded with sandstone with low clay content, in which sandstone with low clay content is oil bearing/production formation. Due to increase in irreducible water saturation resulting from high clay content in full earing/production formation Due to increase in irreducible water saturation resulting from high clay content in full scale viscous oil interval predominated by montmorillonite clay mineral as well as its higher salinity, low-resistivity presentation occur in well. In order that well log interpretations match weli. Saturation standards of moderate-and high-resistivity oil-bearing zones can't be only followed, the geologic charaeteristics and well log information must be analysed simultaneously.

Key words: Well Zhongjian 3 in Fengcheng area, Low-resistivity viscous oil, Well log interpretation, Irreducible water saturation, Clay mineral, Formation water salinity

Guo Hongbo. UNDERSTANDING OF VISCOUS OIL RESERVOIR OF LOW RESISTIVITY IN FENGCHENG AREA OF KARAMAY OILFIELD[J]. Xinjiang Petroleum Geology, 1994, 15(2): 179-183.

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UNDERSTANDING OF VISCOUS OIL RESERVOIR OF LOW RESISTIVITY IN FENGCHENG AREA OF KARAMAY OILFIELD

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