Results 181 to 190 of about 265 (205)

Downhole motor specifically designed for directional air drilling

International Journal of Rock Mechanics and Mining Sciences & Geomechanics Abstracts, 1992
This paper reports on a positive displacement motor (PDM), designed specifically for use with air as the drilling medium, reduces the limitations of air drilling with mud motors. Much industry experience using mud motors for directional air drilling has been unsatisfactory.
openaire   +1 more source

Guide for Use of Direct Air-Rotary Drilling for Geoenvironmental Exploration and the Installation of Subsurface Water-Quality Monitoring Devices

2008
  +5 more sources

Bi-directional drilling of CFRPs: From principle to delamination suppression

Composites Part B: Engineering, 2023
Shiyu Cao, Hao Nan Li, Gangfeng Tan
exaly  

The optimization algorithm for application in directional drilling trajectories of energy field

Energy Reports, 2022
Jiwei Zhang
exaly  

Equivalent-input-disturbance-based robust control of drilling trajectory with weight-on-bit uncertainty in directional drilling

ISA Transactions, 2022
Zhen Cai, Xuzhi Lai, Chengda Lu
exaly  

Rheological Properties of Clay-Based Drilling Fluids and Evaluation of Their Hole-Cleaning Performances in Horizontal Directional Drilling

Journal of Pipeline Systems Engineering and Practice, 2020
Chao Kang, Ergun Kuru, Bayat Alireza
exaly  

Directional drilling positioning calculations

Journal of Natural Gas Science and Engineering, 2020
Tuna Eren, Vural Sander Suicmez
exaly  

Overview on vertical and directional drilling technologies for the exploration and exploitation of deep petroleum resources

Geomechanics and Geophysics for Geo-Energy and Geo-Resources, 2016
Tianshou Ma, Ping Chen, J Zhao
exaly  

Directional drilling in unstable environments

International Journal of Mining Science and Technology, 2014
Ting Ren
exaly  

Casing wear analysis helps verify the feasibility of gas drilling in directional wells

Journal of Natural Gas Science and Engineering, 2016
Qiang Zhang, Zhanghua Lian, Tiejun Lin   +2 more
exaly