Influencing factors for breakthrough pressure of carbonate caprocks

ZHANG Lu; GUO Jianying; LIN Tong; XIE Zengye; YANG Chunlong; DONG Caiyuan; GUO Zeqing; HAO Aisheng

doi:10.11781/sysydz202103461

Volume 43 Issue 3

May 2021

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Article Navigation > PETROLEUM GEOLOGY & EXPERIMENT > 2021 > 43(3): 461-467

ZHANG Lu, GUO Jianying, LIN Tong, XIE Zengye, YANG Chunlong, DONG Caiyuan, GUO Zeqing, HAO Aisheng. Influencing factors for breakthrough pressure of carbonate caprocks[J]. PETROLEUM GEOLOGY & EXPERIMENT, 2021, 43(3): 461-467. doi: 10.11781/sysydz202103461

Citation:

ZHANG Lu, GUO Jianying, LIN Tong, XIE Zengye, YANG Chunlong, DONG Caiyuan, GUO Zeqing, HAO Aisheng. Influencing factors for breakthrough pressure of carbonate caprocks[J]. PETROLEUM GEOLOGY & EXPERIMENT, 2021, 43(3): 461-467. doi: 10.11781/sysydz202103461

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Influencing factors for breakthrough pressure of carbonate caprocks

doi: 10.11781/sysydz202103461

ZHANG Lu^{1, 2
,},
GUO Jianying^{1, 2},
LIN Tong¹,
XIE Zengye^{1, 2},
YANG Chunlong^{1, 2},
DONG Caiyuan^{1, 2},
GUO Zeqing^{1, 2},
HAO Aisheng^{1, 2}

1.
PetroChina Research Institute of Petroleum Exploration & Development, Beijing 100083, China
2.
CNPC Key Laboratory of Gas Reservoir Formation and Development, Langfang, Hebei 065007, China

Received Date: 2020-05-28
Rev Recd Date: 2021-03-22
Publish Date: 2021-05-28

Abstract

Abstract

In addition to traditional gypsum salt rocks and shale rocks, many studies have confirmed that carbonate rocks also work as oil and gas seals. Breakthrough pressure is a characteristic parameter for the evaluation of the sealing ability of cap rocks. Different lithology types and lengths of carbonate rocks were subjected to breakthrough pressure measurement experiments at different temperatures, results showed that lithology, permeability and fracture development have obvious effects to rock characteristics. At the same temperature, sample length does not have a good correlation with breakthrough pressure, however, at different temperatures, the breakthrough pressure of most samples gradually decreases with the increase of temperature. Therefore, formation temperature has a non-negligible effect on the sealing ability of cap rocks. It is a key factor that needs to be considered for the evaluation of the sealing capacity of cap rocks. The carbonate rock with a high argillaceous content has better sealing capacity under high geothermal conditions.
- high temperature,
- carbonate rock,
- breakthrough pressure,
- influencing factors

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References(29)

References

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Influencing factors for breakthrough pressure of carbonate caprocks

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