Results 21 to 30 of about 180,798 (213)

Research Status of Deepwater Drilling Fluid on Artificial Intelligence [PDF]

open access: yesE3S Web of Conferences, 2022
The potential benefits of creating intelligence are huge, Oil, as the world’s main energy material, is an important energy that relates to the national economy and people’s livelihood.
Sui Dianjie   +4 more
doaj   +1 more source

Induced drilling strains in glass fibre reinforced epoxy composites [PDF]

open access: yes, 2013
Residual strains induced by drilling of glass-fibre reinforced polymers (GFRP) were determined using a hybrid experimental-numerical methodology. Experimentally, a set of GFRP specimens were drilled under well-defined tensile (calibration) stresses ...
STIFFEL, J.-H.   +16 more
core   +1 more source

Analysis on Managed Pressure Response Time and Its Influential Factors in Deepwater Drilling

open access: yesShiyou jixie, 2023
In order to ensure the safety and efficiency of managed pressure drilling technology in deepwater, the characteristics and influential factors of managed pressure drilling response time in deepwater drilling were studied.Regarding the wellbore annulus ...
Tian Ye   +4 more
doaj  

Evaluating the Effect of New Gas Solubility and Bubble Point Pressure Models on PVT Parameters and Optimizing Injected Gas Rate in Gas-Lift Dual Gradient Drilling

open access: yesEnergies, 2022
Gas-lift dual gradient drilling (DGD) is a solution for the complex problems caused by narrow drilling windows in deepwater drilling. Investigations are lacking on using oil-based drilling fluid in DGD, which is the principal novel idea of the present ...
Naser Golsanami   +2 more
doaj   +1 more source

Deepwater Oil-Based Drilling Fluid Systembased on Grey Wolf Optimized BP neural network [PDF]

open access: yesE3S Web of Conferences, 2022
In this paper, a BP neural network model with 5-9-6 structure is constructed according to various fault gases and different fault types ofWater-based drilling fluid and synthetic-based drilling fluid.
Sui Dianjie   +4 more
doaj   +1 more source

Tool wear monitoring and hole surface quality during CFRP drilling [PDF]

open access: yes, 2014
The present investigation focuses on the evaluation of tool wear and surface integrity in the context of CFRP cutting. Series of drilling experiments were performed on CFRP plates using cemented carbide solid drills with the aim to investigate ...
RAMIREZ, Christophe   +3 more
core   +1 more source

Propagation characteristics of Doppler ultrasonic wave in gas–liquid two-phase flow in an offshore deepwater riser

open access: yesNatural Gas Industry B, 2021
During offshore deepwater drilling, the strata with abnormal pressure are often encountered and gas invasion and overflow occur easily. If they cannot be detected and controlled in time, blowout may happen and even get out of control, which will cause ...
Chunwei Gu   +8 more
doaj   +1 more source

Prediction of gas hydrate formation region in the wellbore of deepwater drilling

open access: yesPetroleum Exploration and Development, 2008
It is essential to consider the thermodynamics, temperature, and pressure conditions of gas hydrate formation in order to predict the gas hydrate formation region in the wellbore of deepwater drilling.
Zhi-yuan WANG   +3 more
doaj   +1 more source

Deepwater PDC Jetting Bit-Drilling Technology Based on Well Structure Slimming

open access: yesEnergies, 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]

open access: yes, 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

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