Results 101 to 110 of about 14,048 (222)

Laboratory Experimental Study on Rock Breaking Efficiency and Stability of PDC Bit

Shiyou jixie, 2020
In order to evaluate the rock breaking efficiency and stability of the newly developed PDC bit in the target lithologic formation, and guide the optimization, improvement and efficient use of the newly developed PDC bit, full scale laboratory rock ...
Zhang Jiawei, Meng Zhao, Ji Guodong, Cui Meng, Wang Haige, Yang Xiongwen, Yu Lianjie   +6 more
doaj  

Rock Breaking Simulation and Optimization of PDC Bit for Jimsar Shale Formation

Shiyou jixie
Conventional planar-cutter PDC bit exhibits prominent problems in drilling， such as severe wear， frequent cutter breakage and short footage， resulting in low drilling efficiency and high cost. To improve the drilling speed and reduce the drilling cost in
Zang Chuanzhen
doaj   +1 more source

The Influence of Mixed Cutter Arrangement Parameters of PDC Bit on Rock Breaking

Shiyou jixie, 2020
To optimize the cutting structure of the mixed cutter arranged PDC bit and improve the rock breaking efficiency, an independent design test device was used to carry out the experimental research and numerical simulation on the influence of the cutter ...
Liu Zhong, Hu Wei, Yin Zhuo, Hou Huihui
doaj  

Study on the Bottom Hole Flow Field Analysis Platform of PDC Bit

Shiyou jixie, 2017
The conventional numerical simulation of hydraulic performance of the bottom hole flow field of PDC bit has the shortcomings like high threshold, time-consuming and repetitive work.
Kuang Yuchun, Wang Fang, Wei Lihong, Dong Zongzheng, Luo Jinwu   +4 more
doaj  

New Progress and Development Trends of PDC Bits in China and Abroad

Shiyou jixie
PDC bits have developed rapidly in recent years.The new progress of PDC bits used in oil and gas wells in China and abroad was reviewed,and CNPC's efforts in the research and application of new bits were introduced.Furthermore,the situation and ...
Hu Huaigang, Huang Hongchun, Wang Haige, Li Zhongming, Xi Chuanming, Wu Qiang, Liu Li   +6 more
doaj  

Experiment and Simulation of Self-excited Torkbuster

Shiyou jixie, 2017
The stick-slip vibration is a technical bottleneck restricting for PDC bit in efficient drilling deep hard formation. To reduce the stick-slip vibration of drill bit during drilling deep hard formations, a torkbuster has been introduced.
Ma Hongyan, Wang Hongbo, Wang Daning, Zhang Jingsong, Zhang Yanrui, Quan Hulin   +5 more
doaj  

Methods of Drilling Speed Promotion for Several Typical Difficult Drilling Formations

Shiyou jixie, 2016
Considering the low ROP and short service life of PDC bit in extra-hard, strong abrasion and soft and hard interlayered heterogeneous formation, new drilling tools and methods are needed to address the drilling speed promotion challenge in difficult ...
Tong Jinwang
doaj  

Prediction of formation abrasiveness under the action of a PDC bit based on the fractal dimension of a rock surface. [PDF]

Sci Rep
Wang C, Li S, Li Y, Hou L, Bai J, Feng Q, Liu Z.   +6 more
europepmc   +1 more source

The effects of gravity on rock fractures caused by PDC bits. [PDF]

Sci Rep
Zhang Q, Zhou Y, Su Y, Gong T, Li D, Tang Y.   +5 more
europepmc   +1 more source

Research on an intelligent drilling parameter optimization method using sliding window segmentation based on the hydraulic-mechanical specific energy model. [PDF]

PLoS One
Li W, Liu Y, Li X, Deng B, Zhao H, Zhu L, Zain U.   +6 more
europepmc   +1 more source