Results 11 to 20 of about 136,396 (361)

Numerical Simulation of Nonlinear Processes in the “Thruster—Downhole Motor—Bit” System While Extended Reach Well Drilling

open access: yesEnergies, 2023
The relevance of the application of hydraulic thruster technology is determined by the technological limitations of drilling both vertical and horizontal wells.
Andrey A. Kunshin   +4 more
doaj   +1 more source

Formulation and Environmental Impact Evaluation of Walnut and Soya Bean Oil Based Drilling Fluid [PDF]

open access: yes, 2016
One of the oil and gas hazard that associated with drilling operation is oil based drilling fluid and its associated cutting disposition. It is highly imperative for policy maker to propagate the use of environmental friendly oil based mud for drilling ...
Adesina, F. C.   +2 more
core   +1 more source

The experimental assessment and study of ubi kayu starch as fluid loss control agent in water based drilling fluids [PDF]

open access: yes, 2016
The efficiency of a drilling mud, particularly the additives is valued by standard measurement of specific characteristics of the formation. This study presents an investigation on ubi kayu starch as a fluid loss control agent in water-based drilling mud
Abdullah, Norhafizah, Samavati, Raheleh
core   +1 more source

Soluble pozzolanic materials from coal bottom ash as cement replacement material [PDF]

open access: yes, 2021
Nowadays, intensive research in production of highly reactive pozzolanic materials from industrial waste to replace cement is crucial. This action expected to increase industrial waste recycling rate and at the same time reduce extraction of non ...
Abd Wahab, Azrina   +3 more
core   +1 more source

Effect of Nitric Acid on the Low Fluorescing Performance of Drilling Fluid Lubricant Based Animal and Vegetable Oils

open access: yesJournal of Spectroscopy, 2013
After synthesis of mixed fatty acid triethanolamine ester surfactant based on animal and vegetable mixed oils, the reaction solution was added into 4% (wt/wt) liquid nitric acid or 9% (wt/wt) solid nitric acid as eliminating fluorescent agent continuing ...
Feng-shan Zhou   +6 more
doaj   +1 more source

Study on the Low-Temperature Rheology of Polar Drilling Fluid and Its Regulation Method

open access: yesGels, 2023
Drilling fluid is the blood of drilling engineering. In the polar drilling process, the ultra-low temperature environment puts high demands on the rheological performance of drilling fluids.
Ning Huang   +5 more
doaj   +1 more source

Research on the mixed-mode fracture damage characteristics of shale soaked in different drilling fluids

open access: yesGeomechanics and Geophysics for Geo-Energy and Geo-Resources, 2023
Drilling fluid is a vital component in drilling engineering and can be considered as the lifeblood of the drilling. It serves multiple functions such as cooling the drill bit, cleaning the wellbore, and maintaining wellbore stability.
Yu Suo   +4 more
doaj   +1 more source

Assessment of zonal isolation risk to changes in design parameters [PDF]

open access: yes, 2017
The Well Containment Screening Tool (WCST) focuses on well integrity evaluation after well control incident. The WCST favors a greater wall thickness and, hence, a narrower cementing annulus, potentially increasing the risk of cement loss.
Zhang, Huidong, active 21st century
core   +1 more source

Effects of lime on ester based drilling fluid [PDF]

open access: yes, 2011
Lime known as calcium hydroxide is one of the important components in invert emulsion drilling fluid. It has been used to activate the emulsifier. However, excessive lime has adverse effect on ester as it could accelerate hydrolysis of ester into its ...
Razali, Siti Zulaika   +5 more
core   +2 more sources

Drilling performance analysis of impregnated micro bit [PDF]

open access: yesMechanical Sciences, 2022
The cutting mechanical properties of impregnated diamond bit depend on the performance of its cutting elements. Aiming at the factors affecting the cutting element performance of impregnated diamond bit, the laboratory rock breaking experiment of ...
D. Song   +11 more
doaj   +1 more source

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