Results 21 to 30 of about 504,172 (167)

Minimizing Drill-String-Induced Wellbore Instability

, 2023
Objective/Scope: Every year the petroleum industry spends more than an estimated $6 billion in mitigating wellbore instabilities that account for nearly half of the drilling-related NPT (non-productive time).
DAS, SOUKAT KUMAR, Albahrani, Hussain, Finkbeiner, Thomas, Bathija, Arpita Pal   +3 more
core   +1 more source

Analysis of the Influence of Downhole Drill String Vibration on Wellbore Stability

Machines, 2023
Most studies related to aspects of wellbore stability, such as wellbore breakage, block dropping, and wellbore expansion, revolve around the physicochemical interaction between drilling fluid and surrounding rock, but relevant studies show that drill ...
Yonggang Shan, Qilong Xue, Jin Wang, Yafeng Li, Chong Wang   +4 more
doaj   +1 more source

Study on the Evolution Law of Wellbore Stability Interface during Drilling of Offshore Gas Hydrate Reservoirs

Energies, 2023
The study of wellbore stability in offshore gas hydrate reservoirs is an important basis for the large-scale exploitation of natural gas hydrate resources.
Xuefeng Li, Baojiang Sun, Baojin Ma, Hao Li, Huaqing Liu, Dejun Cai, Xiansi Wang, Xiangpeng Li   +7 more
doaj   +1 more source

Study on the dynamic mechanism of wellbore instability in deep fractured formations

Petroleum
Due to the presence of highly discrete rock blocks and extensively developed natural fractures in fractured formations, frequent losses of drilling fluid and wellbore instability incidents occur during the drilling process.
Shuxin Dong, Yang Xia, Jian Xiang, Yan Jin, Yunhu Lu   +4 more
doaj   +1 more source

Large‐scale experiments of the borehole instability on shale formation influenced by drill pipe rotation

Energy Science & Engineering, 2019
Wellbore instability happens mostly in the shale formation. Early researches have studied thoroughly on the physicochemical and mechanical mechanism that causes instability.
Yuanwei Sun, Meng Meng, Xiaodong Dai, Yuanfang Cheng, Yanli Wang, Shuxin Dong, Yongchao Hao, Guowei Peng   +7 more
doaj   +1 more source

A review of the shale wellbore stability mechanism based on mechanical–chemical coupling theories

Petroleum, 2015
Wellbore instability in hard brittle shale is a critical topic related to the effective exploitation of shale gas resources. This review first introduces the physical–chemical coupling theories applied in shale wellbore stability research, including ...
Qiangui Zhang, Wenyu Jia, Xiangyu Fan, Yongchang Liang, Yang Yang   +4 more
doaj   +1 more source

Application of Catastrophic Theory to Predict Wellbore Instability in Drilling

, 2010
Wellbore collapsing and formation leak off in drilling are all resulted from wellbore instability. So, researches on wellbore instability mechanism and its critical conditions can provide theoretical foundation on which is based to prevent wellbore ...
Jianjun Zhang, Juan Jin, Zhaowei Liu, Liancheng Wang, Fenqin Ling, Xianwei Meng, Junfeng Shi, Yuzhang Liu   +7 more
core   +1 more source

Effect of Drilling Fluid Invasion on Natural Gas Hydrate Near-Well Reservoirs Drilling in a Horizontal Well

Energies, 2021
Horizontal wells can significantly improve the gas production and are expected to be an efficient exploitation method for the industrialization of natural gas hydrates (NGHs) in the future.
Qibing Wang, Ren Wang, Jiaxin Sun, Jinsheng Sun, Cheng Lu, Kaihe Lv, Jintang Wang, Jianlong Wang, Jie Yang, Yuanzhi Qu   +9 more
doaj   +1 more source

Wellbore Stabilization Technology of “Fluid-Solid-Chemical Coupling” in Continental Shale Oil—A Case Study of Shale Oil in Block GL

Energies, 2022
During the oil shale drilling in Group Q of Block GL, the shale is prone to hydration, deterioration, sidewall exfoliation and frequent collapse, which affects the efficient exploration and development of shale oil.
Xin Ai, Mian Chen
doaj   +1 more source

Occurrence of severe slugging in oil production lines and mitigation methods: A numerical simulation approach using ALFAsim®

The Canadian Journal of Chemical Engineering, EarlyView.
Abstract Severe slugging represents a major challenge in offshore production systems, potentially compromising operational stability and the integrity of installations. Although established simulators such as OLGA® are widely used for its analysis, there is a gap in the literature regarding the application of the one‐dimensional simulator ALFAsim® for ...
Wayne Gabriel Nóbrega Firme, Tony Herbert Freire de Andrade, Phillipe Augusto Sales, Ricardo Soares Gomez, João Alves de Lima   +4 more
wiley   +1 more source