, 2009 In the oil and gas industry, an underreamer is a tool used to extend and enlarge the diameter of a previously-drilled bore. The problem proposed to the Study Group is to obtain appropriate mathematical models of underreamer dynamics, in forms that will ...
Barton, David +8 more
core
Research on the method of dynamic PDC cutters distribution
IOP Conference Series: Earth and Environmental Science, 2021 Abstract PDC bit design, especially the design of the crown and cutters of PDC bit, is a relatively complex analysis process, which involves many factors such as the back-dip angle, cutting depth, cutting force, cutting power and other factors of PDC cutters.
Qi Peng +4 more
openaire +1 more source
Advanced Functional Materials, EarlyView.Cuttlebone‐inspired metamaterials exploit a septum‐wall architecture to achieve excellent mechanical and functional properties. This review classifies existing designs into direct biomimetic, honeycomb‐type, and strut‐type architectures, summarizes governing design principles, and presents a decoupled design framework for interpreting multiphysical ...
Xinwei Li, Zhendong Li
wiley +1 more source
A Geologic Si‐O‐C Pathway to Incorporate Carbon in Silicates
Geophysical Monograph Series, Page 47-54., 2020 This book is Open Access. A digital copy can be downloaded for free from Wiley Online Library.
Explores the behavior of carbon in minerals, melts, and fluids under extreme conditions
Carbon trapped in diamonds and carbonate-bearing rocks in subduction zones are examples of the continuing exchange of substantial carbon ...
Alexandra Navrotsky +2 more
wiley +1 more source
Study of the Cutter Design of PDC Drill Bits on Effect of Back Rake Angle and Size of the Cutter on Wear Rate [PDF]
, 2015 In the oil and gas industry, drilling is one of the most important aspects due to the economics and high demand. Reduction in drilling time is required to minimize the cost of operations.
Fauzi, Mohamad Azrin
core +2 more sources
Calibrated FEM modelling of rock cutting with PDC cutter [PDF]
MATEC Web of Conferences, 2018 Complexity of bit-rock interactions and formation fracture makes rock drilling a challenging task from modelling perspective. A finite element model is developed which can plausibly capture the rock fractures while it is capable of evaluating drilling forces for various values of Rate of Penetration (ROP), bit angular velocity and cutter configuration.
Yari, Nina +4 more
openaire +3 more sources
Crystal Engineering of Reticular Materials for Gas‐ and Liquid‐Phase Hydrocarbon Separation
Advanced Materials, EarlyView.Crystal engineering enables systematic study of structure/function relationships as exemplified by pore engineering of reticular sorbents, including porous coordination networks and covalent organic frameworks. This review assesses such studies applied across the full scope of industrially relevant hydrocarbon separations to provide insight into how ...
Xia Li +2 more
wiley +1 more source
Research on Cutting Load and Heat Generation Law of PDC Wearing Cutter
Shiyou jixie, 2021 At present, there is no further researches on the cutting load and heat generation of worn PDC cutter under different front rake angles and different wear grades. For this reason, single cutter cutting tests are used to verify the relevant performance of
Zhu Guanghui, Kuang Yuchun, Lin Wei
doaj
Results in Materials, 2021 An attempt was made to identify the sources of residual stress in polycrystalline diamond compact (PDC) cutters by X-ray diffraction (XRD) technique. PDC retains residual stress after sintering and this residual stress plays an important role for cutter ...
Debkumar Mukhopadhyay
doaj +1 more source
Strategies for Engaging Communities in Creating Physical Civic Technologies [PDF]
, 2018 Despite widespread interest in civic technologies, empowering neighbourhoods to take advantage of these technologies in their local area remains challenging.
Clarke, Loraine +3 more
core +3 more sources