Development Process and Field Applications of a New Ester-Based Mud System for ERD Wells on Australia's Northwest Shelf

Eckhout, Daniel; Dolan, S.P.; Gogan, Ray; Ledgister, Hanjo; Mowat, Carol; Tipton, P.; Ewen, Bruce; Dye, Williams

doi:10.2118/62791-ms

Cited by 17 publications

(8 citation statements)

References 9 publications

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“…and ester-based drilling fluids (EBDF). According to this study, OLBDF possesses a much less 6 rpm reading than EBDF (Eckhout et al 2000). Furthermore, OLBDF exhibited a lower yield point compared to the EBDF with similar density.…”

Section: Hole Cleaningmentioning

confidence: 64%

“…The base oil's kinematic viscosity can indicate the drilling fluid ability to carry cuttings and other drilling solids to the surface while it is pumpable (Burrows et al 2001). Low viscosity synthetic oils lead to better pumpability, reduction in the viscous drag and less cost for total drilling fluid (Eckhout et al 2000;Dawson RB 1995), (Talalay et al 2015). It is also an indication of the needed volume of the ester to formulate the SBDF.…”

Section: Kinematic Viscositymentioning

confidence: 99%

“…These low values of electrical stability indicates weak emulsion stability of drilling fluids (Growcock, Ellis, and Schmidt 1994). Consequently, the ester can be utilized in drilling fluids with minimal lime content at temperatures around 300°F (Eckhout et al 2000;Goncalves JT, De Oliveira MF 2007;Sulaimon, Adeyemi, and Rahimi 2017;Amin et al 2010;Peresich, Burrell, and Prentice 1991).…”

Section: Low Hydrolytic Stabilitymentioning

confidence: 99%

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Review of synthesis, characteristics and technical challenges of biodiesel based drilling fluids

Aboulrous

Haddad

Rafati

et al. 2022

Journal of Cleaner Production

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Section: Hole Cleaningmentioning

confidence: 64%

Section: Kinematic Viscositymentioning

confidence: 99%

Section: Low Hydrolytic Stabilitymentioning

confidence: 99%

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Review of synthesis, characteristics and technical challenges of biodiesel based drilling fluids

Aboulrous

Haddad

Rafati

et al. 2022

Journal of Cleaner Production

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“…As the hot roll temperature increases, the lubrication performance of MEO-21 becomes better, and Δf can reach 89.56% at 180 °C hot rolling. Therefore, MEO-21 can be used as the base oil in the subsequent lubricant formulation process; before selecting a base oil, some key properties need to be checked, and some important properties are kinematic viscosity, temperature stability, and hydrolytic stability [ 26 ].…”

Section: Resultsmentioning

confidence: 99%

One-Step Process of Mixed Oleic Acid Esters and Its High Temperature Lubrication Properties in Bentonite Gelling Suspension

Bao

Ma²,

Zhou³

2022

Gels

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In recent years, with the increase in requirements for horizontal wells, ultra-high depth wells, small wells and branching wells, it has become increasingly important to deal with the conflict between drilling safety and bottomhole friction. In order to meet the requirements of complex boreholes and deepwater drilling processes, it is crucial to improve the performance of ester-based lubricants. Oleic acid esters are relatively stable and have high lubricity at low temperature, however, these can be hydrolyzed at high temperature. However, the structure of carboxylic acids and alcohols can significantly affect the performance of synthetic esters. In order to solve the problem of balancing the high-temperature performance and low temperature performance of oleic acid esters with different structures, we propose a new oleic acid esterification process. After mixing methanol and ethylene glycol, it is reacted with oleic acid, and the mixed oleate prepared is named MEO-21, and the optimal esterification conditions are obtained as follows: the reaction time is 3 h, the reaction temperature is 150 °C, and concentrated sulfuric acid is the catalyst. MEO-21 not only achieves an extreme pressure lubrication coefficient reduction rate (Δf) of 86.57% at room temperature, but maintains a stable performance after hot rolling at high temperatures. Hot rolling at 150 °C for 16 h, Δf was 85.25%, hot rolling at 180 °C for 16 h, Δf was 89.56%. MEO-21 was used as a base oil with other industrial by-product oils to compound and produce a high-temperature-resistant lubricant that was named L-541, L-541′s Δf was 90.39% at room temperature. L-541 was hot-rolling at 120 °C, 150 °C and 180 °C for 16 h, the Δf was stabled at 89%.

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“…The advantages of (O/W) emulsion-based muds over water-based muds are excellent rheological and filtration properties, thermal stability as well as high tolerance to solids, salts and acid-gas contamination (Aloh et al 2014; Edited by Yan-Hua Sun Jha et al 2013). Moreover, the lower density of an O/W mud makes it attractive for underbalanced drilling operations (Eckhout et al 2000), since it reduces the risk of exceeding the formation fracture pressure (Yue and Ma 2008). Diesel (O/W) emulsion drilling muds are widely used in drilling operations primarily due to their viscosity profile and low flammability (Nelson et al 1984).…”

Section: Introductionmentioning

confidence: 99%

A novel oil-in-water drilling mud formulated with extracts from Indian mango seed oil

Kumar¹,

Thakur²,

Kumar³

et al. 2019

Pet. Sci.

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Drilling muds with less environmental impact are highly desired over conventional diesel-based mud systems, especially in light of the emerging strict environmental laws. In this article, a novel oil-in-water (O/W) emulsion drilling fluid formulated with a methyl ester extracted from Indian mango seed oil was evaluated. The effect of the weight percent of different constituents of the emulsion/suspension including the oil phase, bentonite, and polyanionic cellulose polymer on the rheology and the fluid loss was examined. The methyl ester oil phase/mud system displayed superior physical, chemical, rheological and filtration properties relative to the diesel and the mango seed oil. Eco-toxicity of the methyl ester and diesel (O/W) emulsion mud systems was assessed using the acute lethal concentration test. The Indian mango methyl ester (O/W) emulsion mud displayed much less impact on fish population. Flow characteristics collected from the flow model at 85 °C suggested excellent shear thinning behavior of the Indian mango methyl ester (IMME) (O/W) emulsion mud. Moreover, the IMME (O/W) emulsion displayed strong pseudoplastic behavior, an attractive feature in a drilling mud, with increasing clay content and polymer concentration. The methyl ester mud was thermally stable over a wide range of the constituent concentrations. Furthermore, a particle size analysis revealed that engineered drilling muds targeting suspension of particles with certain size range can be formulated by changing the volume fraction of the methyl ester in the mud system.

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Development Process and Field Applications of a New Ester-Based Mud System for ERD Wells on Australia's Northwest Shelf

Cited by 17 publications

References 9 publications

Review of synthesis, characteristics and technical challenges of biodiesel based drilling fluids

Review of synthesis, characteristics and technical challenges of biodiesel based drilling fluids

One-Step Process of Mixed Oleic Acid Esters and Its High Temperature Lubrication Properties in Bentonite Gelling Suspension

A novel oil-in-water drilling mud formulated with extracts from Indian mango seed oil

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