Results 311 to 320 of about 5,119,526 (356)

Experimental research on the influence of working parameters on the drilling efficiency

Tunnelling and Underground Space Technology, 2020
Hongsheng Li, Songyong Liu, Huanhuan Chang   +2 more
semanticscholar   +1 more source

OIL AND GAS WELL DRILLING EFFICIENCY

This study presents data based on the results of innovative research on increasing the efficiency of drilling processes in oil and gas fields. The results of our study also provide a technical description of the results of the analysis of the efficiency of drilling oil and gas wells.
Batirova, Uldayxan, Karjaubaev, Marat, Khalmuratov, Bekzat, Abdullaev, Azamat   +3 more
openaire   +1 more source

Estimation of optimal drilling efficiency and rock strength by using controllable drilling parameters in rotary non-percussive drilling

, 2020
Feng Shangxin, Wang Yujie, Zhang Guolai, Zhao Yufei, Wang Shanyong, Cao Ruilang, Xiao Enshang   +6 more
semanticscholar   +1 more source

Efficiency evaluation of a percussive drill rig using rate-energy ratio based on rock drilling tests

Journal of Petroleum Science and Engineering, 2022
Q. Shen, Yujie Wang, Ruilang Cao, Yaoru Liu   +3 more
semanticscholar   +1 more source

Experimental study of the energy transfer efficiency and rock fragmentation characteristics in percussive drilling

Geothermics, 2022
Hengyu Song, Huaizhong Shi, Guangjie Yuan, Yan Xia, Jingcui Li, Tianen Liu   +5 more
semanticscholar   +1 more source

Incentive Drilling Contracts: A Logical Approach for Enhancement of Drilling Efficiency

SPE Drilling Engineering, 1992
Summary Incentive drilling contracts historically have been based on the footage and turnkey concepts. Because these concepts have not been used widely in the international and offshore arenas, this paper discusses other innovative approaches to incentive contracts. Case studies of recently completed or current international and offshore
openaire   +1 more source

Non-fullerene acceptors with branched side chains and improved molecular packing to exceed 18% efficiency in organic solar cells

Nature Energy, 2021
Chao Li, Huotian Zhang, Lei Zhu
exaly  

Study on drilling efficiency of drilling robot for seabed exploration

The Proceedings of JSME annual Conference on Robotics and Mechatronics (Robomec), 2020
Wataru TOYAMA, Keita ISAKA, Kazuki TSUMURA, Tomoki WATANABE, Manabu OKUI, Taro NAKAMURA, Hiroshi YOSHIDA   +6 more
openaire   +1 more source

Frequency analysis of multi-sources acoustic emission from high-velocity waterjet rock drilling and its indicator to drilling efficiency

International Journal of Rock Mechanics And Mining Sciences, 2019
M. Sheng, S. Tian, Bo Zhang, H. Ge
semanticscholar   +1 more source

Numerical simulation of the energy transfer efficiency and rock damage in axial-torsional coupled percussive drilling

, 2021
Hengyu Song, Huaizhong Shi, Gensheng Li, Chen Zhenliang, Xiaojing Li   +4 more
semanticscholar   +1 more source