Experimental Investigation into a Novel Supersaturated Saline Drilling Fluid Available in Anhydrite Formation: A Case study of Missan Oilfields, Iraq

Xu, Lin; Huang, Xin; You, Fei; Xu, Jianchun; Xu, Mengque; Gao, Jun; Huang, Meilan

doi:10.1007/s13369-020-04911-x

Cited by 4 publications

(3 citation statements)

References 15 publications

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“…The application and optimization of the supersaturated drilling fluid cause prominent improvement in the rheology of the drilling fluid that is suitable for the drilling operated in anhydrate formations. 131 Another research group from China also utilized a mixture of NaCl, KCl, and NaCOOH for the synthesis of a thermally stable drilling fluid with better fluid loss control. The plugging agents and the shale inhibitor chemical cause slight change in key features of the high-density brine-based drilling fluid.…”

Section: High-density Brines As Drilling Fluidsmentioning

confidence: 99%

“…The application of supersaturated saline drilling fluid was done by the utilization of a mixture of NaCl, KCl, and NaCOOH with the concentrations varying by 6%, 8%, and 30%, respectively. The application and optimization of the supersaturated drilling fluid cause prominent improvement in the rheology of the drilling fluid that is suitable for the drilling operated in anhydrate formations . Another research group from China also utilized a mixture of NaCl, KCl, and NaCOOH for the synthesis of a thermally stable drilling fluid with better fluid loss control.…”

Section: Oilfield Applications Of High-density Brinementioning

confidence: 99%

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Application of High-Density Brines in Drilling and Completion Fluids: Current Insights and Future Perspectives

Rana,

Murtaza,

Raza

et al. 2024

Energy Fuels

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Fluids for drilling and completion operations are essential components in the oil and gas industry. With the advancement of drilling technology, effective drilling fluid for harsh drilling operations is still challenging to exploit hydrocarbons. One of the prominent developments in this area is the application of high-density brines. The high-density brines have shown the capacity to tackle complicated harsh geological conditions. This review paper gives a detailed review of the properties, formulation, application, and importance of high-density brines in drilling and completion processes. The factors affecting the salient features of high-density brines, such as chemical composition, temperature, pH, and pressure, are discussed. Furthermore, the paper investigates the application of high-density brines in the oil and gas industry as drilling fluids, where they play a crucial role in wellbore stability, formation fluid control, and cuttings transport. In addition, this review highlights emerging trends and research to improve the performance of high-density brines. Finally, the review discusses current challenges and outlook, environmental concerns, economic feasibility, and compatibility with wellbore materials. The current ample review serves as beneficial literature for research scientists, engineers, and industry experts looking for a massive knowledge of high-density brines and their diverse applications.

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Section: High-density Brines As Drilling Fluidsmentioning

confidence: 99%

Section: Oilfield Applications Of High-density Brinementioning

confidence: 99%

Application of High-Density Brines in Drilling and Completion Fluids: Current Insights and Future Perspectives

Rana,

Murtaza,

Raza

et al. 2024

Energy Fuels

View full text Add to dashboard Cite

show abstract

“…It is difficult to control and adjust rheological properties and filtration properties. In addition, the drilling fluid cannot effectively inhibit hydration and dispersion of clay in the formation at high temperatures, which may lead to hole shrinkage, stuck bit, bit balling and even drilling failure [7].…”

Section: Introductionmentioning

confidence: 99%

Performance and mechanism of new silicone polymer as filtrate reducer with inhibitory effect for water-based drilling fluid

Ban¹,

Xu²,

Zeng³

et al. 2022

Eng. Res. Express

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An organic silicon filtrate reducer (AATN) with inhibitory effect, which can resist temperature up to 180℃, was synthesized by using acrylamide (AM), vinyl trimethoxysilane (A-171), allyltrimethylammonium chloride (TM) and N-vinyl pyrrolidone (NVP) as monomers. AATN can effectively reduce the filtration loss of drilling fluid and inhibit the hydration expansion and hydration dispersion of the clay, which was beneficial to wellbore stability. Experimental results showed that the API filtration loss (FLAPI) of the drilling fluid containing 2 wt% AATN was only 7.8mL. The siloxane groups of AATN were hydrolyzed in aqueous solution to generate Si-OH bonds, which can react with Si-OH bonds on hydrated clay surface to form a strong chemical adsorption. It was conducive to maintaining the dispersion of clay particles in the drilling fluid. The stable grid structure was formed by AATN and clay particles to reduce mud cake permeability, which can reduce the damage of drilling fluid filtrates to borehole stability. In addition, AATN can adsorb on the surface of sodium bentonite, thus forming a hydrophobic adsorption film on its surface, which effectively enveloped bentonite and inhibited the hydration expansion of bentonite.

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Drill-In Fluid Optimization for Formation Damage Control Considering Salt Dissolution in Saline-Lacustrine Reservoirs

Tan,

Yang,

You

et al. 2023

SPE Journal

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Summary Salt dissolution induced by drill-in fluid loss is a frequent occurrence in saline-lacustrine reservoirs, which can potentially result in serious formation damage. In light of this, an experimental study was conducted to investigate the salt mineral dissolution and dynamic damage in the rock samples collected from a saline-lacustrine carbonate reservoir and the response of pore-fracture structures using the in-situ drill-in fluids. The study further involved analyzing the formation-damage-control (FDC) ability of the in-situ drill-in fluids. The results indicated that although salt dissolution significantly increased the pore size of the tight matrix and the width of natural fractures, improving the conductivity of seepage channels, the increase in pore-fracture size may have greatly aggravated the drill-in fluid loss during the process. The continuous serious filtrate loss, lower pressure-bearing capacity of the plugging zone, and lower permeability recovery rate (PRR) of rock indicated poor FDC performance of in-situ brine drilling fluids for the salt-dissolved core samples. The FDC performance of drill-in fluids for saline-lacustrine carbonate reservoirs was optimized based on the response of reservoir pore-fracture structure to salt dissolution and the theory of slightly underbalanced activity. The experimental results showed that the optimized drill-in fluids had better FDC ability, with an average PRR increase of 14.04%. Field application indicated that the optimized drill-in fluids reduced the drill-in fluid loss by 76.48%, shortened the drilling cycle by 45.20%, and increased the initial production capacity per well by 7.70%. This study can provide insightful guidance to optimize the FDC performance of drill-in fluids for saline-lacustrine hydrocarbon reservoirs during drilling.

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Experimental Investigation into a Novel Supersaturated Saline Drilling Fluid Available in Anhydrite Formation: A Case study of Missan Oilfields, Iraq

Cited by 4 publications

References 15 publications

Application of High-Density Brines in Drilling and Completion Fluids: Current Insights and Future Perspectives

Application of High-Density Brines in Drilling and Completion Fluids: Current Insights and Future Perspectives

Performance and mechanism of new silicone polymer as filtrate reducer with inhibitory effect for water-based drilling fluid

Drill-In Fluid Optimization for Formation Damage Control Considering Salt Dissolution in Saline-Lacustrine Reservoirs

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