Results 111 to 120 of about 15,062 (254)

Study on rock breaking mechanism of PDC bit with rotating module

, 2020
Kuilin Huang, Yingxin Yang, Yang Liu, Yunpeng Zhong, Haitao Ren   +4 more
openalex   +1 more source

Experimental Study on Conglomerate Breaking Characteristics of Conical PDC Cutter

Shiyou jixie, 2021
In order to further improve the rock breaking efficiency and the adaptability of drilling hard and complex strata of PDC bit, a comprehensive test device of rock breaking by PDC cutter was developed. The test device was used to conduct experimental study
Xu Weiqiang, Shi Huaizhong, Cao Quan, Shi Xingxing, Hu Xihui, Xiong Chao, Chen Han   +6 more
doaj  

Impact of Rock Cuttings on Downhole Fluid Movement in Polycrystalline Diamond Compact (PDC) Bits, Computational Fluid Dynamics, Simulation, and Optimization of Hydraulic Structures

Fluids
The flow occurring at the bottom of a polycrystalline diamond compact (PDC) drill bit involves a complex process made up of drilling fluid and the drilled rock cuttings.
Lihong Wei, Jaime Honra
doaj   +1 more source

TESS Data Release Notes: Sector 18 DR25 [PDF]

This release note discusses the science data products produced by the Science Processing Operations Center at Ames Research Center from Sector 18 observations made with the TESS spacecraft and cameras as a means to document instrument performance and ...
Burke, Christopher J., Caldwell, Douglas A., Doty, John, Fausnaugh, Michael M., Jenkins, Jon M., Smith, Jeffrey C., Ting, Eric B., Twicken, Joseph D., Vanderspek, Roland, Villesenor, Joel S.   +9 more
core   +1 more source

Discretion, Due Process, and the Prison Discipline Committee [PDF]

, 1985
A revised version of this paper was published as: Schafer, N.E. (1986). "Discretion, Due Process and the Prison Discipline Committee." Criminal Justice Review 11(2): 37–46 (Fall 1986).
Schafer, N. E.
core  

Field Test of Torsion Impactorin Well Jinyue 7-1

Shiyou jixie, 2017
To address the issues of deep well drillingin China like low ROP and high cost, it is necessary to suppress the influence of "stick-slip vibration" on PDC bit.
Li Wei, Sun Wenfeng, Yan Tie, Chen Shichun, Li Yue   +4 more
doaj  

Log Skeletons: A Classification Approach to Process Discovery [PDF]

, 2018
To test the effectiveness of process discovery algorithms, a Process Discovery Contest (PDC) has been set up. This PDC uses a classification approach to measure this effectiveness: The better the discovered model can classify whether or not a new trace ...
de Carvalho, R. Medeiros, Verbeek, H. M. W.   +1 more
core   +1 more source

Optimizing Parameters of Two-Stage Pdc Bit in Deep Formation Applications

, 2023
Zhenliang Chen, Huaizhong Shi, Heqian Zhao, Zhongwei Huang, Wenhao He, Han Chen, Chao Yu, Bo Zhang   +7 more
openalex   +1 more source

TESS Data Release Notes: Sector 9 DR11 [PDF]

This release note discusses the science data products produced by the Science Processing Operations Center at Ames Research Center from Sector 9 observations made with the TESS spacecraft and cameras as a means to document instrument performance and data
Burke, Christopher J., Caldwell, Douglas A., Doty, John P., Fausnaugh, Michael M., Jenkins, Jon M., Smith, Jeffrey C., Ting, Eric B., Twicken, Joseph D., Vanderspek, Roland, Villesenor, Joel S.   +9 more
core   +1 more source

Selection and Optimization Design of PDC Bits Based on FEM Analysis for Drilling Long Horizontal Sections of Shale Formations [PDF]

, 2023
Lulin Kong, Zhaowei Wang, Haige Wang, Mingyue Cui, Chong Liang, Xiangwen Kong, Ping Wang   +6 more
openalex   +1 more source