Zhaowei Chen is Director of the Research Department of Geomechanics for Well Drilling and Completion, Engineering of CNPC Engineering Technology R & D Co., Ltd. He is mainly engaged in the research of geomechanics for unconventional oil and gas wells and deep and ultra-deep wells. He was awarded one second-prize of the CNPC Scientific and Technological Progress Award (ranking first) and one second-prize of the CNPC Basic Research Award (ranking first) of CNPC, and three second-prizes of the Scientific and Technological Progress Award (ranking the first) of CNPC Engineering Technology R & D Co., Ltd. Xiang Degui, former senior engineer at CNPC Engineering Technology R&D Company (now retired), specialized in directional drilling and casing damage prevention for complex oil and gas wells. During his distinguished career, he led/participated in over 10 national and provincial-level research projects, published 15 technical papers, was granted 9 invention patents, and received 5 research awards.Qing Zhao is the head of the drilling technology research institute, CNPC Engineering Technology R&D Company Limited. He is mainly engaged in the research and management of new technologies in deep and ultra-deep well drilling & completion engineering. He has led and participated in over 10 national and provincial/ministerial-level research projects. He has published more than 60 papers, authorized more than 30 registered patents, and received more than 10 R&D awards in this field.Peng Tan is a senior engineer at CNPC Engineering Technology R&D Company Limited. He obtained the “Young Elite Scientists Sponsorship Program” of the China Association for Science and Technology and the “Youth Science and Technology Talent Training Program” of CNPC in 2022 and 2023. He has published more than 30 papers as the first/corresponding author, authorized 13 registered patents, and received 5 R&D awards in this field.

• Introduction.- Causes and Mechanisms of Casing Deformation.- Types and Forming Conditions of Fluid Channels.- Assessment and Prediction of Fault/Fracture Slip Risk.- Quantitative Analysis Technique of Fault Slippage and Casing Deformation.- Casing Deformation Early Warning Technology.- Casing Deformation Control Technology.- Casing Deformation Prevention Technology.

Zhaowei Chen is Director of the Research Department of Geomechanics for Well Drilling and Completion, Engineering of CNPC Engineering Technology R & D Co., Ltd. He is mainly engaged in the research of geomechanics for unconventional oil and gas wells and deep and ultra-deep wells. He was awarded one second-prize of the CNPC Scientific and Technological Progress Award (ranking first) and one second-prize of the CNPC Basic Research Award (ranking first) of CNPC, and three second-prizes of the Scientific and Technological Progress Award (ranking the first) of CNPC Engineering Technology R & D Co., Ltd. Xiang Degui, former senior engineer at CNPC Engineering Technology R&D Company (now retired), specialized in directional drilling and casing damage prevention for complex oil and gas wells. During his distinguished career, he led/participated in over 10 national and provincial-level research projects, published 15 technical papers, was granted 9 invention patents, and received 5 research awards.Qing Zhao is the head of the drilling technology research institute, CNPC Engineering Technology R&D Company Limited. He is mainly engaged in the research and management of new technologies in deep and ultra-deep well drilling & completion engineering. He has led and participated in over 10 national and provincial/ministerial-level research projects. He has published more than 60 papers, authorized more than 30 registered patents, and received more than 10 R&D awards in this field.Peng Tan is a senior engineer at CNPC Engineering Technology R&D Company Limited. He obtained the “Young Elite Scientists Sponsorship Program” of the China Association for Science and Technology and the “Youth Science and Technology Talent Training Program” of CNPC in 2022 and 2023. He has published more than 30 papers as the first/corresponding author, authorized 13 registered patents, and received 5 R&D awards in this field.

• Introduction.- Causes and Mechanisms of Casing Deformation.- Types and Forming Conditions of Fluid Channels.- Assessment and Prediction of Fault/Fracture Slip Risk.- Quantitative Analysis Technique of Fault Slippage and Casing Deformation.- Casing Deformation Early Warning Technology.- Casing Deformation Control Technology.- Casing Deformation Prevention Technology.