Results 121 to 130 of about 15,062 (254)

Numerical Simulation of Downhole Particle Flow in Horizontal Well with PDC Bit

Shiyou jixie, 2019
In the deep shale gas horizontal well drilling, the low cutting carrying efficiency often lead to the problem of bit ball. To address the problem, the CFD-DEM coupling method is used to simulate the horizontal well flow field between PDC bit and ...
Kuang Yuchun, Zhang Rui, Luo Jinwu, Zhu Guanghui   +3 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

PDC BITS APPLICATION IN THE FIELDS OF EASTERN AND WESTERN SIBERIA

, 2016
Vitaliy Zaitsev, A. A. Karpikov, Vladimir Osipov   +2 more
openalex   +1 more source

Cutter Load Distribution Analysis and Crown Shape Optimal Design of Complex Curved PDC Bit

, 2019
Pei Ju
openalex   +2 more sources

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  

Numerical simulation study on the optimization design of the crown shape of PDC drill bit [PDF]

, 2013
Pei Ju, Zhenquan Wang, Zhai Ying-hu, Dongyu Su, Yunchi Zhang, Zhaohui Cao   +5 more
openalex   +1 more source

Investigation of hydrodynamic parameters and modernization of PDC drill bit elements

, 2020
Ya. S. Biletskyi, Т. Ya. Shymko, І. Ya. Biletska, Mykola Seniushkovych, V. V. Mykhailiuk, Ruslan Deineha   +5 more
openalex   +2 more sources

Simulation and Experimental Investigations of Ultrasonic Assisted Drilling with Micro-Pdc Bit

, 2022
Congshan Zhang, Yan Zha, Ke Gao, Cong Zhang, Xiaoshu Lv, Xiaobo Xie   +5 more
openalex   +1 more source

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  

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