Maturity limit of sweet spot area for continental matrix type shale oil: a case study of lower Es3 and upper Es4 sub-members in Dongying Sag, Bohai Bay Basin

LI Zhiming; SUN Zhongliang; LI Maowen; CAO Tingting; QIAN Menhui; MA Xiaoxiao; LIU Peng; Bao Yunjie; JIANG Qigui; TAO Guoliang; ZHANG Jun; RUI Xiaoqing

doi:10.11781/sysydz202105767

Volume 43 Issue 5

Sep. 2021

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Article Navigation > PETROLEUM GEOLOGY & EXPERIMENT > 2021 > 43(5): 767-775

LI Zhiming, SUN Zhongliang, LI Maowen, CAO Tingting, QIAN Menhui, MA Xiaoxiao, LIU Peng, Bao Yunjie, JIANG Qigui, TAO Guoliang, ZHANG Jun, RUI Xiaoqing. Maturity limit of sweet spot area for continental matrix type shale oil: a case study of lower Es3 and upper Es4 sub-members in Dongying Sag, Bohai Bay Basin[J]. PETROLEUM GEOLOGY & EXPERIMENT, 2021, 43(5): 767-775. doi: 10.11781/sysydz202105767

Citation:

LI Zhiming, SUN Zhongliang, LI Maowen, CAO Tingting, QIAN Menhui, MA Xiaoxiao, LIU Peng, Bao Yunjie, JIANG Qigui, TAO Guoliang, ZHANG Jun, RUI Xiaoqing. Maturity limit of sweet spot area for continental matrix type shale oil: a case study of lower Es₃ and upper Es₄ sub-members in Dongying Sag, Bohai Bay Basin[J]. PETROLEUM GEOLOGY & EXPERIMENT, 2021, 43(5): 767-775. doi: 10.11781/sysydz202105767

Citation:

LI Zhiming, SUN Zhongliang, LI Maowen, CAO Tingting, QIAN Menhui, MA Xiaoxiao, LIU Peng, Bao Yunjie, JIANG Qigui, TAO Guoliang, ZHANG Jun, RUI Xiaoqing. Maturity limit of sweet spot area for continental matrix type shale oil: a case study of lower Es₃ and upper Es₄ sub-members in Dongying Sag, Bohai Bay Basin[J]. PETROLEUM GEOLOGY & EXPERIMENT, 2021, 43(5): 767-775. doi: 10.11781/sysydz202105767

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Maturity limit of sweet spot area for continental matrix type shale oil: a case study of lower Es₃ and upper Es₄ sub-members in Dongying Sag, Bohai Bay Basin

doi: 10.11781/sysydz202105767

LI Zhiming^{1, 2, 3
,},
SUN Zhongliang^{1, 2, 3},
LI Maowen^{1, 2, 3},
CAO Tingting^{1, 2, 3},
QIAN Menhui^{1, 2, 3},
MA Xiaoxiao⁴,
LIU Peng^{1, 2, 3},
Bao Yunjie^{1, 2, 3},
JIANG Qigui^{1, 2, 3},
TAO Guoliang^{1, 2, 3},
ZHANG Jun^{1, 2, 3},
RUI Xiaoqing^{1, 2, 3}

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

Received Date: 2021-07-03
Rev Recd Date: 2021-08-31
Publish Date: 2021-09-28

Abstract

Abstract

The matrix type shale oil will become the main contributer for increasing shale oil reserves and production in China. Maturity is an important factor for the controlling to the distribution of sweet spot area for matrix type shale oil. The vitrinite reflectance suppression ranges of continental organic rich shale with different organic matter type were analyzed, and the maturity limit of sweet spot area for continental matrix type shale oil was discussed taking the lower Es₃ (third member of Shahejie Formation) and upper Es₄ (fourth member of Shahejie Formation) sub-members of the Dongying Sag as a case study. The vitrinite reflectance suppression ranges of continental organic rich shale are positively correlated to organic matter types. The actual maturity (EqVR_o) of organic matter rich shale of the lower Es₃ in subsags of Dongying Sag was mainly at the range of 0.69%-1.05%, and that of the upper Es₄ is mainly at the range of 0.74%-1.20%. Combining with the analysis of geological and engineering sweet spot conditions, the EqVR_o of organic matter rich shale of both two sub-members range 0.74%-1.20%. The deeper areas of four sub-sags in the Dongying Sag all have favorable prospecting of commercial development for matrix type shale oil in the lower Es₃ and upper Es₄ sub-members.
- organic-rich shale,
- vitrinite reflectance,
- maturity limit,
- matrix type shale oil,
- sweet spot area,
- lower Es₃ and upper Es₄ sub-members,
- Dongying Sag,
- Bohai Bay Basin

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References(34)

References

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Maturity limit of sweet spot area for continental matrix type shale oil: a case study of lower Es₃ and upper Es₄ sub-members in Dongying Sag, Bohai Bay Basin

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Maturity limit of sweet spot area for continental matrix type shale oil: a case study of lower Es3 and upper Es4 sub-members in Dongying Sag, Bohai Bay Basin

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Maturity limit of sweet spot area for continental matrix type shale oil: a case study of lower Es₃ and upper Es₄ sub-members in Dongying Sag, Bohai Bay Basin