Results 151 to 160 of about 431 (193)

Effects of the chamfer and materials on performance of PDC cutters

Journal of Petroleum Science and Engineering, 2021
Abstract Polycrystalline diamond compact (PDC) cutters play a key role in the performance of PDC bits in the oil & gas drilling. The study of single cutter on the rock-breaking mechanism is very important for PDC bits to deal with challenging formations, especially when the wells become increasingly longer and complex.
Fangyuan Shao, Wei Liu, Deli Gao
openaire   +1 more source

Advanced Coating to Mitigate PDC Cutter Thermal Degradation in PDC Bit Manufacturing

International Petroleum Technology Conference, 2022
Abstract Polycrystalline Diamond Compact (PDC) cutters on PDC drill bits are the primary cutting elements to shear and scrape the formations during drilling process. In the PDC drill bit manufacturing, PDC cutters are attached onto drill bit with silver-copper-zinc alloys by brazing process.
Jianhui Xu, Guodong David Zhan, Timothy E. Moellendick, Wenhui Jiang   +3 more
openaire   +1 more source

Rock Breaking Mechanism of Saddle PDC Cutters and Analysis of Mixed Cutter Layouts

Rock Mechanics and Rock Engineering
Tengfei Sun, Sun Tengfei
exaly   +2 more sources

Study on integrated effect of PDC double cutters

Journal of Petroleum Science and Engineering, 2019
Abstract This paper studies the integrated effect of double cutters on cutting rock. The rock being cut is subjected to hydrostatic pressure. Double cutters paralleled to each other and separated with a distance are advancing in the same direction and removing rock materials over constant depths of cut.
Pengju Chen, Meng Meng, Stefan Miska, Mengjiao Yu, Evren Ozbayoglu, Nicholas Takach   +5 more
openaire   +1 more source

Friction on PDC Cutters at High Normal Stress

Journal of Energy Resources Technology, 2002
The impact of frictional forces on the overall forces when drilling with a PDC bit has previously been implied by models and by single cutter and bit tests. This report describes new experiments to measure friction between three different bit surface materials and two different rocks over a wide range of normal stresses in up to four different fluids ...
John R. Smith, Jeffrey B. Lund, Robert K. Galloway   +2 more
openaire   +1 more source

Study on interaction between rocks and worn PDC'S cutter

International Journal of Rock Mechanics and Mining Sciences, 1997
Abstract This paper presents the results of a study investigating cutting response of a single worn PDC cutter with special attention on the friction on its wear flat which is badly understood in litterature. So, consider a cutter with horizontal wear flat fixed on a rotating bit with vertical axis.
H. Geoffroy, D. Nguyen Minh
openaire   +2 more sources

Curved Cutters Extend Range of Formations Drilled with PDC Bits

SPE/IADC Drilling Conference, 1989
ABSTRACT For the past few years the industry has been trying to extend the operating range of polycrystalline diamond compact (PDC) bits in terms of formations that can be drilled. Initially, the direction was uphole to the softer formations where the high standoff blade bits and large diameter PDC bits have proven economic.
R.H. Knowlton, R. Kester
openaire   +1 more source

PDC Bits Using Positive Rake Cutters

IADC/SPE Drilling Conference, 1990
ABSTRACT A radical new concept in bit technology has been developed for use in drilling the deep water shales of the Gulf of Mexico and the Mississippi Delta where both milltooth and conventional PDC bits have performed poorly. This new tool utilizes the following technical elements: Large diameter positive rake PDC cutters as the ...
openaire   +1 more source

PDC drill bit with rotating cutters

Construction of Oil and Gas Wells on Land and Sea, 2022
R.M. Bogomolov, G.S. Mozgovoy
openaire   +1 more source

PDC-Bit Evaluation by Cutter Instrumentation and Computer Simulation

Proceedings of SPE Annual Technical Conference and Exhibition, 1989
ABSTRACT A new tool for monitoring cutter performance is developed for selecting best PDC drilling conditions. The drilling efficiency of different PDC-bits can show great variations due to different drilling conditions and formations being drilled. Field tests are often unreliable for evaluation purpose because of limited
G. Homstvedt, A. Rødland
openaire   +1 more source