密闭取心井油水饱和度校正方法

谭锋奇; 杨长春; 李洪奇; 杨新平; 王仕莉

doi:10.3799/dqkx.2013.059

Volume 38 Issue 3

May 2013

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Article Navigation > Earth Science > 2013 > 38(3): 592-598

TAN Feng-qi, YANG Chang-chun, LI Hong-qi, YANG Xin-ping, WANG Shi-li, 2013. Study on Oil-Water Saturation Correction from Sealed Core Wells. Earth Science, 38(3): 592-598. doi: 10.3799/dqkx.2013.059

Citation:

TAN Feng-qi, YANG Chang-chun, LI Hong-qi, YANG Xin-ping, WANG Shi-li, 2013. Study on Oil-Water Saturation Correction from Sealed Core Wells. Earth Science, 38(3): 592-598. doi: 10.3799/dqkx.2013.059

TAN Feng-qi, YANG Chang-chun, LI Hong-qi, YANG Xin-ping, WANG Shi-li, 2013. Study on Oil-Water Saturation Correction from Sealed Core Wells. Earth Science, 38(3): 592-598. doi: 10.3799/dqkx.2013.059

Citation:

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Study on Oil-Water Saturation Correction from Sealed Core Wells

doi: 10.3799/dqkx.2013.059

1.
College of Geophysics and Information Engineering, China University of Petroleum, Beijing 102249, China
2.
Institute of Geology and Geophysics, Chinese Academy of Sciences, Beijing100029, China
3.
Research Institute of Petroleum Exploration and Development, Xinjiang Oilfield Company, PetroChina, Karamay834000, China

Received Date: 2012-08-19
Publish Date: 2013-05-15

Abstract

Abstract

The analysis of oil-water saturation from sealed core wells is important data for evaluation of oil-bearing property of reservoirs. However, the oil-water saturation values from core measuring in laboratory usually deviate from true situation of original formation condition, so these data must be corrected before using. In this paper, the Kexia Group reservoir of First-Middle block in Karamay oilfield is selected as the study object. Firstly, based on the theoretical mode of oil-water saturation the relationship between oil-water saturation under original formation condition and oil-water saturation of sealed core analysis are studied according to the concept of oil-water remaining rate, and then the linear relationship of oil-water saturation values of sealed core analysis and oil-water remaining rate are determined. Based on the slope and intercept of above linear relationship the oil and water loss percentage in total loss of oil-water saturation are respectively established by use of mathematical statistics and mathematical processing methods. Finally, the saturation data can be effectively corrected by oil and water loss percentage. The above-mentioned method is applied to oil-water saturation correction in Kexia Group reservoir and achieves good application results. The using of corrected saturation data greatly improves correlation between core oil-bearing and reservoir electricity and corrected data can better reflect the oil-bearing situation of original formation, then provides accurate basic data for the saturation formula determination and remaining oil evaluation.
- sealed core well,
- saturation correction,
- remaining rate,
- linear relationship,
- mathematical processing,
- geophysics

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References(33)

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Study on Oil-Water Saturation Correction from Sealed Core Wells

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