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Deep marine shale gas (3500–4500 m) and ultradeep marine carbonate oil and gas (≥ 6000 m) are among the most important development areas for China's future oil and gas resources. Some key problems related to the safety and efficient drilling and completion of marine oil and gas wells are addressed in this paper: (1) a prediction method for pore pressure in deep marine reservoirs; (2) a method to solve the problems of low penetration rates and high drilling costs; (3) a method to maintain wellbore sealing integrity under cyclic loading to simulate staged fracturing; (4) a wellbore stability control method; and (5) how to carry out efficient hydraulic fracturing. To focus on the efficient drilling and completion of oil and gas wells in ultradeep shale and carbonate formations, we carried out research to solve the aforementioned problems and share our results in this paper.

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Advances in Drilling and Completion for Deep Marine Reservoirs

  • 章节

  • 出版模式：

    开放获取

  • 发表日期：

    2026年

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  • Yijin Zeng,
  • Gensheng Li,
  • Bing Hou,
  • Huaizhong Shi,
  • Mao Sheng,
  • Daqi Li,
  • Junhai Chen,
  • Rengguang Liu,
  • Yang Xia,
  • Shiming Wei,
  • Wenhao He,
  • Yayun Zhang

摘要

Deep marine shale gas (3500–4500 m) and ultradeep marine carbonate oil and gas (≥ 6000 m) are among the most important development areas for China's future oil and gas resources. Some key problems related to the safety and efficient drilling and completion of marine oil and gas wells are addressed in this paper: (1) a prediction method for pore pressure in deep marine reservoirs; (2) a method to solve the problems of low penetration rates and high drilling costs; (3) a method to maintain wellbore sealing integrity under cyclic loading to simulate staged fracturing; (4) a wellbore stability control method; and (5) how to carry out efficient hydraulic fracturing. To focus on the efficient drilling and completion of oil and gas wells in ultradeep shale and carbonate formations, we carried out research to solve the aforementioned problems and share our results in this paper.