Technique and preliminary application of field analysis of water content for continental shale cores

JIA Mengyao; BAO Yunjie; LI Zhiming; LENG Junying; LIU Wangwei; HE Jinyi; LU Longfei; LI Maowen

doi:10.11781/sysydz202402420

Volume 46 Issue 2

Mar. 2024

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JIA Mengyao, BAO Yunjie, LI Zhiming, LENG Junying, LIU Wangwei, HE Jinyi, LU Longfei, LI Maowen. Technique and preliminary application of field analysis of water content for continental shale cores[J]. PETROLEUM GEOLOGY & EXPERIMENT, 2024, 46(2): 420-427. doi: 10.11781/sysydz202402420

Citation:

JIA Mengyao, BAO Yunjie, LI Zhiming, LENG Junying, LIU Wangwei, HE Jinyi, LU Longfei, LI Maowen. Technique and preliminary application of field analysis of water content for continental shale cores[J]. PETROLEUM GEOLOGY & EXPERIMENT, 2024, 46(2): 420-427. doi: 10.11781/sysydz202402420

Citation:

JIA Mengyao, BAO Yunjie, LI Zhiming, LENG Junying, LIU Wangwei, HE Jinyi, LU Longfei, LI Maowen. Technique and preliminary application of field analysis of water content for continental shale cores[J]. PETROLEUM GEOLOGY & EXPERIMENT, 2024, 46(2): 420-427. doi: 10.11781/sysydz202402420

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Technique and preliminary application of field analysis of water content for continental shale cores

doi: 10.11781/sysydz202402420

JIA Mengyao^{1, 2, 3, 4
,},
BAO Yunjie^{1, 2, 3, 4
,
,},
LI Zhiming^{1, 2, 3, 4},
LENG Junying^{1, 2, 3, 4},
LIU Wangwei^{1, 2, 3, 4},
HE Jinyi^{1, 2, 3, 4},
LU Longfei^{1, 2, 3, 4},
LI Maowen^{3, 5}

1.
Wuxi Research Institute of Petroleum Geology, SINOPEC, Wuxi, Jiangsu 214126, China
2.
SINOPEC Key Laboratory of Petroleum Accumulation Mechanisms, Wuxi, Jiangsu 214126, China
3.
State Key Laboratory of Shale Oil and Gas Enrichment Mechanisms and Efficient Development, Wuxi, Jiangsu 214126, China
4.
State Energy Center for Shale Oil Research and Development, Wuxi, Jiangsu 214126, China
5.
SINOPEC Petroleum Exploration and Production Research Institute, Beijing 102206, China

Received Date: 2023-04-24
Rev Recd Date: 2024-02-20
Publish Date: 2024-03-28

Abstract

Abstract

Fluid analysis of continental shale layers plays a crucial role in evaluating shale oil layer selection. Given the current state of technologies of fluid characterization for continental shale layers and well-site requirements, a rapid method for testing water content of rock sample was developed in this study which uses microwave and is ideal for well site. After removing drilling fluid from the core surface, rock samples are promptly collected and crushed into particles using a mill. These granular samples are then placed in the sample cups of a microwave water content tester. Within 2 seconds, mass percentage data for the rock water sample can be obtained, with an average absolute error of ±0.15%. Initial application studies demonstrate promising prospects for moisture detection data in rock samples. Firstly, the water detection results can be used to calculate the pore space occupied by water in the sample's pore system, enabling quick determination of the sample's apparent porosity when combined with well site pyrolysis data. Secondly, the apparent oil saturation and apparent water saturation of core samples can be calculated based on rock sample density and pyrolysis data, facilitating rapid evaluation of rock sample fluids at the well site. This method eliminates the washing and drying processes for rock samples, reduces analysis time, and consequently enhanced the experimental techniques for core porosity and fluid analysis at well sites.
- core water content,
- apparent oil saturation,
- apparent water saturation,
- apparent porosity,
- continental shale,
- well site analysis technology

All authors disclose no relevant conflict of interests.
The study was designed by JIA Mengyao and BAO Yunjie. The experimental operation was completed by JIA Mengyao, BAO Yunjie, LENG Junying, LIU Wangwei and HE Jinyi. The manuscript was drafted and revised by JIA Mengyao, BAO Yunjie, LI Zhiming, LENG Junying, LIU Wangwei, HE Jinyi, LU Longfei and LI Maowen. All the authors have read the last version of paper and consented for submission.

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References(40)

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Technique and preliminary application of field analysis of water content for continental shale cores

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Technique and preliminary application of field analysis of water content for continental shale cores

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