Results 271 to 280 of about 998,789 (338)

Effect of Cutter Shape on the Resistance of PDC Cutters Against Tip Impacts

SPE Journal, 2022
Summary Under harsh downhole conditions, the quasibrittle characteristics of polycrystalline diamond compact (PDC) cutters are a serious drawback, which readily causes the cutters’ premature failure under impact loads. Innovating 3D cutter shapes is an effective solution for optimizing the cutter’s interaction with the rock and improving
Jiusen Wei, Wei Liu, Deli Gao
openaire   +1 more source

Improved Drilling Performance in Asia Pacific Formations Through Digitally Augmented Design Process for Shaped Cutter Drill Bits

Day 4 Fri, March 25, 2022, 2022
The objective of this paper is to demonstrate the improved drilling performance achieved by operators in the Asia Pacific region by implementing shaped Polycrystalline diamond compact (PDC) cutter technology.
Stephen Duffy, Nick Wasuthalainunt, Chanikarn Wongnang   +2 more
semanticscholar   +1 more source

Using In-Bit Data Capturing Sensors to Identify and Reduce Dysfunctions Using a Higher Drilling Efficiency Shaped Cutter Solution

Day 1 Mon, October 31, 2022, 2022
Drilling oil wells with long laterals in extended reach reservoirs present one of the hardest challenges for drilling companies in the demanding environment especially given their propensity to high downhole vibrations causing many premature tool ...
R. Kouzaiha, Salem Sayyaleh, Ahmed Khalil, Ahmed Borayek, M. Reyad, Atheer Al Otaibi   +5 more
semanticscholar   +1 more source

Mechanism Analysis and Mathematical Modeling of Brittle Failure in Rock Cutting with a Single Sharp Cylinder-Shaped PDC Cutter

Social Science Research Network, 2023
The drilling efficiency of a polycrystalline diamond compact (PDC) bit plays a vital role in oil and gas exploration, which is greatly affected by the rock-cutting performance of a single PDC cutter. Although many research efforts have been put in, the
J. Wei, W. Liu, D. Gao
semanticscholar   +1 more source

INTRODUCING NEW VITREOUS CUTTER BLADE SHAPES

Retina, 2014
To assess the efficacy of novel vitreous cutter blades compared with the regular guillotine by means of particle image velocimetry. Tested blades included a regular blade (RB) and newer designs where a circular (hole blade [HB]) or a slit aperture (slit blade [SB]) had been opened proximal to the cutting edge.Twenty-three-gauge probes were immersed in ...
Rossi T, QUERZOLI, GIORGIO, Angelini G, Malvasi C, Iossa M, Placentino L, Ripandelli G.   +6 more
openaire   +3 more sources

Numerical Study on Rock-Breaking Mechanisms of Triangular-Shaped PDC Cutter

All Days, 2023
Conventional PDC cutter usually gets broken when drilling into deep formations due to high hardness and strong abrasion. To help solve such a problem, triangular-shaped PDC cutters have been developed and utilized in the design of hybrid-cutters PDC ...
Wenhao He, Li Xue, Runqing Zhang, Zhenliang Chen, Huaizhong Shi, Zhongwei Huang, Xiong Chao, Jinming Sun, Chengtao Hu   +8 more
semanticscholar   +1 more source

Experimental Study of Conglomerate-Breaking Characteristics of Axe-Shaped PDC Cutter

All Days, 2022
Conventional PDC cutters are prone to get broken when drilling through conglomerate formations and soft-hard interbedded heterogeneous layers, leading to serious fatigue wear, short bit life, and small bit footage.
Chen Zhenliang, Shi Huaizhong, Chen Han, W. Zhenquan, H. Zhongwei, Song Xianzhi   +5 more
semanticscholar   +1 more source

On the shape of backed-offmilling cutters

Flow, Turbulence and Combustion, 1949
Some general considerations are given about the shape of backed-off milling cutters. When the back-off curve is given, one of the three shapes of profile, wanted profile and shaving surface can be found, provided the other two are known. A formula is derived for the case where two of the three above mentioned figures are either straight or plane and ...
A. Michels, S. R. De Groot, C. A. Ten Seldam   +2 more
openaire   +1 more source

Discrete Element Study on Rock Failure Mechanism by Shaped PDC Cutter Under Formation Conditions with In-Situ Stress and Temperature

All Days, 2022
Polycrystalline diamond compact (PDC) bits have been widely used in drilling process due to their high efficiency and great reliability. To investigate rock failure mechanism and further improve the performance of PDC bits, a series of single cutter ...
Jianlin Yao, Bin Liu, Haiyan Zhu
semanticscholar   +1 more source

TURNING MODEL FOR SHAPED SURFACES WITH OPPOSITE CUTTERS

Fundamental and Applied Problems of Engineering and Technology, 2021
The analysis of the technological scheme of double–cutter shaped turning with opposed placement of cutters is carried out. An unstable form of oscillations of the cutter – workpiece system during turning is considered. Dependences are presented that allow estimating the magnitude of oscillations during processing and a number of experimental studies ...
openaire   +1 more source