Evaluation and remediation techniques for barite sagging: a review

S Adjei, S Elkaktatny, YA Sokama-Neuyam… - Geoenergy Science and …, 2023 - Elsevier
Heavy-weight materials such as barite (BaSO 4) is used in mud formulations to increase
density. In deeper formations where a higher hydrostatic pressure of the mud column is …

High stability polymer gel for lost circulation control when drilling in fractured oil and gas formations

Y Bai, Y Zhu, J Sun, X Shang, J Wang - Geoenergy Science and …, 2023 - Elsevier
When drilling in fractured oil and gas formations, drilling fluid loss is prevalent, and polymer
gels are commonly utilized as lost circulation materials to plug fractures in loss zones. A high …

The suitability of eggshell for improving the performance of water-based drilling mud in a high-temperature well

AS Fadairo, O Oni - Geothermics, 2024 - Elsevier
The selection of water-based mud for drilling a high-temperature and high-pressure (HTHP)
well is the choice of many drilling mud engineers. This choice of mud is more attractive …

Fly ash as an additive for controlling sagging tendency in ilmenite densified water-based mud for a highly inclined high temperature well

O Oni, A Fadairo, W Gosnold, S Egenhoff - Geoenergy Science and …, 2023 - Elsevier
Sagging has a detrimental outturn on the drilling effectuation and increases the drilling risks.
Drilling deviated wells and wells with high pressures and temperatures has a greater impact …

Analysis of the impact of vermiculite on hematite-based cement systems

A Ahmed, S Adjei, S Elkatatny - ACS omega, 2023 - ACS Publications
Heavyweight oil-well cement systems are designed for isolating intervals and supporting the
casing at deeper depths where high temperatures and pressures are encountered. The …

Influence of perlite on the stability of filter cake in low-density drilling fluids system

J Al Jaberi, B Bageri, G Alzaidi, A Alruhaili - Geoenergy Science and …, 2024 - Elsevier
Enhancing drilling fluid performance in the oil and gas industry involves addressing various
criteria across technical, environmental, and economic aspects. Consequently, this study …

Preparation and characterization of phase change microcapsules for improving the applicable temperature and stability of high temperature resistant drilling fluids

P Guo, Z Qiu, Y Zhang, H Zhong, X Zhao, X Zang… - … Research and Design, 2024 - Elsevier
High temperature environment has many negative effects on the drilling fluid system. In
order to avoid or delay these negative effects, phase change materials (PLMs) microcapsule …

Exploration of an eco-friendly depressant 2-hydroxyphosphonylacetic acid for the flotation separation of barite from calcite

G Ai, S Yang, C Liu, W Xu - Colloids and Surfaces A: Physicochemical and …, 2024 - Elsevier
This work evaluated the 2-hydroxyphosphonylacetic acid (HPAA) as a depressant for calcite
in barite flotation when using sodium oleate (NaOl) as a collector. Micro-flotation results …

Investigation of the Impact of Vermiculite on the Properties of Barite-Based Oil Well Cement

A Ahmed, S Adjei, S Elkatatny, AR Adebayo - Arabian Journal for Science …, 2024 - Springer
In deep formations, it is important to support the casing and isolate the permeable zones by
designing cement systems with high density. Appropriate rheology, high strength, low …

Design of decolorization of methylene blue mixed synthetic wastewater via modified vermiculite using Taguchi method

S Dandil - Adsorption Science & Technology, 2024 - journals.sagepub.com
In this study, vermiculite was modified and used in the decolorization of wastewater
containing methylene blue. Taguchi experimental design method was applied to the …