Development of novel inhibitive water-based drilling muds for oil and gas field applications

Yalman, Emine; Federer-Kovacs, Gabriella; Depçi̇, Tolga; Khalaf, Hani Al; Aylıkçı, V.; Aydın, Mustafa Goktan

doi:10.1016/j.petrol.2021.109907

Cited by 10 publications

(4 citation statements)

References 41 publications

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“…When drilling mud is flowing to the bottom of the borehole during the drilling operation, fluid loss from the mud happens [4]. A water-based drilling fluid that is affordable and environmentally benign that can address these problems while drilling the well is therefore greatly needed [5].…”

Section: Introductionmentioning

confidence: 99%

The Effect of Temperature on Filtration Loss and Mud Cake on The Concentration of Corn Starch Using the KCl-Polymer Sludge System

Fira,

Lestari,

Samura

et al. 2023

Journal of Earth Energy Science, Engineering, and Technology

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Drilling mud is a type of fluid that can help smoothing a drilling. The function of the drilling mud in the drilling process is to lift the drilling cutting. In this laboratory research, corn starch was used as a substitute for starch to reduce filtration loss. Corn starch is made by cleaning, drying, grinding, and sieving. The purpose of this research is to make mud with the addition of corn starch. its effect on filtration loss and mud cake at two temperature conditions. In this study the use of corn starch to be mixed into the mud with concentrations of 3 grams, 5 grams, 7 grams, 9 grams, and 11 grams. Accordingly, it can be seen which mud composition complies with the standard drilling mud specifications. Laboratory test results showed that the addition of corn starch additives caused a decrease in filtration loss for each difference in concentration and temperature. With the addition of 11 grams of corn starch, filtration loss decreased from 6.2 ml to 4.4 ml at 80°F, and it decreased from 5.2 ml to 3.9 ml at 200°F. In addition, corn starch additives cause the thickness of the mud cake formed to decrease. At a temperature of 80 oF the thickness of the mud cake decreased from 0.76 mm to 0.46 mm, while at a temperature of 200 oF it decreased from 0.62 to 0.42 mm. Based on the research results, corn starch additives and temperature influence changes in filtration loss and mud cake.

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Section: Introductionmentioning

confidence: 99%

The Effect of Temperature on Filtration Loss and Mud Cake on The Concentration of Corn Starch Using the KCl-Polymer Sludge System

Fira,

Lestari,

Samura

et al. 2023

Journal of Earth Energy Science, Engineering, and Technology

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“…Drilling fluids are primarily divided into oil-alkaline and water-alkaline. Th kaline can withstand high temperatures [15], exhibit good lubrication, possess st hibitory properties [16], and have the ability to resist salt and calcium contaminatio can effectively reduce damage to oil and gas reservoirs. Therefore, during the phase, oil-alkaline drilling fluids are superior to water-alkaline [17].…”

Section: Introductionmentioning

confidence: 99%

Study on the Properties Changes of Reversible Invert Emulsion during the Process from O/W to W/O with Alkali

Liu,

Li,

et al. 2023

Molecules

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The reversible emulsion drilling fluid system combines the advantages of both oil-based and water-based drilling fluids, which can achieve ideal results in different stages of drilling and completion, and the system can be reused to effectively reduce costs. However, the research on reversible emulsions mainly focuses on the development of new reversible emulsifiers, while the specific phase transformation mechanism of reversible emulsion systems is still unclear. In this paper, a stable reversible emulsion was prepared using the reversible emulsifier DMOB as a raw material, and the reversible emulsion performance of the alkali response from the O/W emulsion phase to the W/O emulsion was studied. The microstructure of reversible emulsions was studied by a microscope, a cryogenic transmission electron microscopy, and a laser particle size analyzer. The changes in macroscopic properties of reversible emulsions in the process of alkali conversion were studied by pH, conductivity, demulsification voltage, static stability, viscosity, rheology, and other indicators, and the conversion mechanism of reversible emulsions from O/W emulsion ⟶ bicontinuous structure ⟶ O/W/O emulsion ⟶ W/O emulsion was clarified. The details are as follows: in the first stage, when the amount of NaOH ≤ 0.43 vol.%, the overall particle size of the emulsion decreases first and then increases with the increase in NaOH dosage. In the second stage, when the amount of NaOH was 0.45 vol.%, a double continuous structure was formed inside the emulsion. In the third stage, when the amount of NaOH is 0.48 vol.%, the O/W/O emulsion is formed, and with the increase in stirring time, the internal oil droplets gradually accumulate and are discharged from the water droplets, and finally, the W/O emulsion is formed. In the fourth stage, when the dosage of 0.50 vol.% ≤ NaOH ≤ 5.00 vol.%, the W/O emulsion was formed, and with the increase of NaOH dosage, the structure and compactness between water droplets increased first and then decreased. In the whole process, with the increase in the amount of NaOH solution, the total particle size of the emulsion first decreased and then increased.

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“…In the downhole environment, mud cake formation depends on the well’s HTHP environment . However, in the downhole environment, HTHP environment, the mud cake formed by dynamic filtration of drilling fluid and the rotational speed of the flushing fluid in the well will affect the final mud cake flushing efficiency.…”

Section: Introductionmentioning

confidence: 99%

“…In the downhole environment, mud cake formation depends on the well's HTHP environment. 30 However, in the downhole environment, HTHP environment, the mud cake formed by dynamic filtration of drilling fluid and the rotational speed of the flushing fluid in the well will affect the final mud cake flushing efficiency. When flushing the mud cake, the rheological characteristics of the fluid determine the wall shear rate on the well wall, 31 simulate the formation of mud cake in the wellbore under HTHP; based on the principle of equal wall shear rate, the flushing efficiency under different annular gaps and displacement is simulated.…”

Section: Introductionmentioning

confidence: 99%

Novel Evaluation Method for Flushing Efficiency Based on the Principle of Wall Shear Rate Equality under High Temperature and High Pressure

Yuan

Yang

et al. 2022

ACS Omega

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An excellent flushing efficiency evaluation device is indispensable for studying the cementing flushing fluid. However, the existing flushing efficiency evaluation device cannot simulate the formation and flushing process of the downhole mud cake. Therefore, this paper proposes a novel flushing efficiency evaluation device that can simulate the formation and flushing of downhole mud cakes. The rotational speed of the device during flushing and the rotor’s diameter is deduced based on the principle of equal wall shear rate. The evaluation device and method can be used to quantitatively evaluate the flushing efficiency of the flushing liquid on the mud cake under high temperatures and high pressures. This device analyzed the effects of the annular gap, temperature, construction displacement, and flushing fluids on flushing efficiency. The results show that the smaller the annular gap, the higher the temperature, the larger the displacement, the higher the scouring efficiency, and the higher the shear bond strength. Fiber flushing has the dual function of mechanical and chemical flushing, so its flushing efficiency is 14.75% higher than that of heavy flushing fluid at 10 min. The surfactant in the emulsified rinse leads to a sudden increase in rinse efficiency in the middle and late stages. The reduced flushing efficiency of the flushing fluid is due to the reduced ζ potential.

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Development of novel inhibitive water-based drilling muds for oil and gas field applications

Cited by 10 publications

References 41 publications

The Effect of Temperature on Filtration Loss and Mud Cake on The Concentration of Corn Starch Using the KCl-Polymer Sludge System

The Effect of Temperature on Filtration Loss and Mud Cake on The Concentration of Corn Starch Using the KCl-Polymer Sludge System

Study on the Properties Changes of Reversible Invert Emulsion during the Process from O/W to W/O with Alkali

Novel Evaluation Method for Flushing Efficiency Based on the Principle of Wall Shear Rate Equality under High Temperature and High Pressure

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