Results 21 to 30 of about 181,748 (215)
Deepwater PDC Jetting Bit-Drilling Technology Based on Well Structure Slimming
Energies, 2023 Growing global energy demand and limited reserves of traditional energy resources are causing a growing energy shortage. In order to meet future energy needs, new energy resources must be continuously explored.
Weiguo Zhang +3 more
doaj +1 more source
Evaluation of the performance of coated and uncoated carbide tools in drilling thick CFRP/aluminium alloy stacks [PDF]
, 2013 This paper aims to establish the wear mechanisms of coated and uncoated tungsten carbide drills when drilling carbon fibre reinforced plastics (CFRP)/aluminium alloy (Al) stacks. During the drilling experiments, thrust forces were measured.
MONTOYA, Maxime +3 more
core +1 more source
Study on Opening Determining and Parameter Optimization of Booster Line for Deepwater Drilling
Shiyou jixie, 2021 During deepwater drilling, when drilling fluid returns from the casing annulus to the riser section, due to the sudden increase of the size of the riser section annulus, the velocity of the drilling fluid decreases and the cutting carrying efficiency ...
Liu Hexing +5 more
doaj
Investigation of jack-up leg extension for deep water operations
International Journal of Naval Architecture and Ocean Engineering, 2015 Since the first jack-up was built, jackups have become the most popular type of mobile offshore drilling unit (MODU) for offshore exploration and development purposes in shallow water.
Yousri M.A. Welaya +2 more
doaj +1 more source
Journal of Marine Science and Engineering, 2023 During deepwater drilling, the subsea wellhead will be subjected to dynamic loads transmitted from the marine environment, floating drilling platform, riser, and blowout preventer (BOP).
Jinduo Wang +4 more
doaj +1 more source
Measurement of laser absorptivity for operating parameters characteristic of laser drilling regime [PDF]
, 2008 Publisher version : http://iopscience.iop.org/0022-3727/41/15/155502/Laser drilling in the percussion regime is commonly used in the aircraft industry to drill sub-millimetre holes in metallic targets.
SCHNEIDER, Matthieu +3 more
core +1 more source
Refined Assessment on Vortex-induced Fatigue of Deepwater Subsea Wellhead
Shiyou jixie, 2022 Subsea wellhead is the key equipment for deepwater drilling and vortex-induced fatigue failure is prone to occur under the action of ocean current.Present research mainly focuses on the global vortex-induced fatigue analysis of deepwater drilling riser ...
Huang Yi +6 more
doaj
Shiyou jixie, 2022 For lack of deepwater drilling technology and theory, riseless mud recovery system(RMR)is difficult to meet practical requirements. Therefore, according to the double gradient drilling principle of RMR system, the control equation of bottom hole pressure
Zhang Jie +5 more
doaj
Applied Sciences, 2017 In deepwater oil and gas drilling, the high-molecular-weight encapsulator aggravates the thickening of the drilling fluid at low temperatures. Therefore, it is hard to manage the downhole pressure, and drilling fluid loss occurs.
Xin Zhao +5 more
doaj +1 more source
Geological Journal, EarlyView.This study reveals that the underexplored Benin Basin features a narrow shelf and steep slope, which promoted the development of multi‐phase, stacked channel‐lobe complexes. These gravity flow deposits, further enhanced by bottom current reworking, reveal a significant undiscovered Upper Cretaceous stratigraphic play with considerable petroleum ...
Liu Zuodong +4 more
wiley +1 more source