Results 91 to 100 of about 34,329 (209)

Theoretical Analysis of the Vertical Stability of a Floating and Sinking Drilled Wellbore Using Vertical Elastic Supports

Applied Sciences
This study addresses the calculation of vertical stability for shaft walls during floating and sinking processes in deep vertical shaft drilling in Western China.
Zhiwei Zhang, Hua Cheng, Xiaoyun Wang, Bao Xie, Mingrui Sun   +4 more
doaj   +1 more source

Borehole stability on Yme

, 2007
Master's thesis in Petroleum ...
openaire   +1 more source

Development and application of high-performance drilling hole protection materials

Scientific Reports
The instability and collapse of the extraction borehole seriously affects the gas extraction effect, and it is of great significance to study the efficient borehole protection technology to improve the stability of the borehole and ensure the gas ...
Xuebo Zhang, Yuhang Wang, Jianliang Gao, Linxiu Han, Xinhui Ge, Ming Yang, Shengcheng Wang   +6 more
doaj   +1 more source

Research on unwrapping and stitching methods for borehole images

Gong-kuang zidonghua
Generating panoramic borehole wall images and "virtual cores" through image unwrapping and stitching is the basis for quantitative analysis of geological structures and is also an urgent need in borehole investigation.
DENG Libo, WANG Xiaolong
doaj   +1 more source

Borehole Stability in Deep Bedding Formations [PDF]

Acta Geologica Sinica - English Edition, 2019
Z.Q. Wang, L.Q. Ding, J. Yang, B.L. Liu
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PADAMOT : project overview report [PDF]

, 2005
Background and relevance to radioactive waste management International consensus confirms that placing radioactive wastes and spent nuclear fuel deep underground in a geological repository is the generally preferred option for their long-term ...
Bath, A., Cortes, A., Degnan, P., Delgado, J., Haszeldine, S., Milodowski, A., Puigdomenech, I., Recreo, F., Silar, J., Torres, T., Tullborg, E.-L.   +10 more
core  

Borehole reinforcement based on polymer materials induced by liquid-gas phase transition in simulating lunar coring

International Journal of Mining Science and Technology
Lunar core samples are the key materials for accurately assessing and developing lunar resources. However, the difficulty of maintaining borehole stability in the lunar coring process limits the depth of lunar coring.
Dingqiang Mo, Tao Liu, Zhiyu Zhao, Liangyu Zhu, Dongsheng Yang, Yifan Wu, Cheng Lan, Wenchuan Jiang, Heping Xie   +8 more
doaj   +1 more source

Borehole Stability of Natural Gas Hydrate Reservoirs

Journal of Physics: Conference Series
Abstract The decomposition of natural gas hydrate (NGH) due to long-term drilling may decrease the strength of reservoirs and increase the borehole failure risk. Meanwhile, the creep properties of NGH reservoirs also may give rise to engineering problems including borehole shrinkage and jamming of drilling tools in the late stage of ...
Chuanliang Yan, Zhe Zhang, Yufa He, Zheng Tian, Yuanfang Cheng   +4 more
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Effect of pulse pressure on borehole stability during shear swirling flow vibration cementing. [PDF]

PLoS One, 2017
Cui Z, Ai C, Lv L, Yin F.
europepmc   +1 more source

Borehole stability in rock salt

, 2018
Rock salt is considered as important resource for storage , because it has special mechanical properties, as a consequence many effords are carried on to undestand the mechanical behaviour..On the other hand, the deformation of the rock salt is markedly time dependent.
openaire   +1 more source