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Open access Oct 2026

Development of a Solids-Free High-Density Oil-Based Drill-In Fluid with Enhanced Interfacial Stability and Reservoir Protection

To mitigate weighting-agent settlement, reservoir pore-throat plugging, and water-sensitivity damage during deep high-temperature drilling, a solids-free high-density oil-based drill-in fluid was developed using synthetic base oil as the continuous phase and potassium formate brine as the dispersed phase. Within the fo...

Ru-Shan Dai, Pan-Hong Yu, Long-Jing Tang et al. · 0 citations
Conference Oct 2026

Ultra-High Temperature Resistant and Environmentally Friendly Polymer Water-Based Drilling Fluid: Development, Performance Evaluation, and Field Application

Global oil and gas exploration is increasingly moving towards deeper formations. However, under the complex and harsh conditions of ultra-high temperature, high pressure, and salt-gypsum layers, the performance of conventional water-based drilling fluids deteriorates significantly, leading to frequent drilling incide...

Yuan-Wei Sun, Jin-Sheng Sun, Kai-He Lv et al. · 0 citations
Open access Sep 2026

Experimental screening of beneficiated Nteje clay–bentonite blends for water-based drilling fluid formulations

Reliance on imported bentonite for water-based drilling fluid formulation poses economic and supply-chain challenges in many developing oil-producing regions. This study experimentally screens the performance of beneficiated Nteje clay (NC3) as a partial replacement for foreign bentonite (FB) in water-based drilling fl...

L. I. Igbonekwu, J. Nwabanne, M. N. Abonyi et al. · 0 citations
Nov 2026

Kikar Gum in Water-Based Drilling Fluid: Rheology, Filtration, and Ranikot Shale Interaction

Water-based drilling fluids must provide enough rheological structure for solids transport while limiting filtrate invasion and interaction with reactive shale. This study evaluates locally sourced Kikar gum as a plant-derived additive in a barite-weighted water-based drilling fluid. Four Kikar-gum formulations (F1-F...

Mohib Khan, Saad Shahzad, S. M. Lalji et al. · 0 citations
Conference Oct 2026

Integrated Formulation Optimization and Core Flood Validation of Surfactant–Polymer Flooding in High-Temperature Anhydrite-Rich Dolomite Reservoirs

This study performs a laboratory investigation of the technical feasibility and formulation optimization of surfactant–polymer (SP) flooding in high-temperature, anhydrite-rich dolomite reservoirs containing high-sulfate formation brines. The objective is to develop thermally stable, scale-compatible chemical formula...

R. Barati, J. Tsau, H. Hagar et al. · 0 citations
Conference Oct 2026

Innovative High-Salinity Water Based Fracturing Fluid for High-Temperature Applications: Reducing Freshwater Demand at Lower Cost

Guar-based gel fluids are widely used in hydraulic-fracturing, because of salt resistance and high viscosity performance. To save freshwater usage, high salinity water was used as base brine for guar gel formulation. Different guar gum and guar derivatives including HPG and CMHPG were evaluated, in terms of molecular...

Zi-Yuan Qi, R. Kalgaonkar, Q. Sahu · 0 citations

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