Rheological study on the invert emulsion fluids with organoclay at high aged temperatures

Geng, Tie; Qiu, Zhengsong; Zhao, Caiyun; Zhang, Li; Zhao, Xin

doi:10.1016/j.colsurfa.2019.04.056

Cited by 15 publications

(7 citation statements)

References 38 publications

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“…W niektórych krajach stosowanie do wiercenia płuczek olejowodyspersyjnych jest ograniczone lub zakazane z uwagi na możliwość zanieczyszczenia gleby i wód gruntowych warstw wodonośnych (Jones et al, 2006;Rojas et al, 2007;Karimi et al, 2009;Amani, 2012;Kulkarni i Jamison, 2015;Luster et al, 2015;Elkatatny, 2019;Geng et al, 2019;Paswan et al, 2020).…”

Section: Wstępunclassified

Odwracalne ciecze emulsyjne o wysokim stężeniu fazy wewnętrznej (HIPR)

Błaż¹,

Badawczy²

2021

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Invert muds are the most commonly used oil-based drilling muds. The oil to water phase ratio in invert drilling muds ranges from 65/35 up to 90/10, with the most common ones ranging from 70/30 to 80/20. At these oil to water phase ratios, the drilling mud is characterized with high stability and appropriate rheological and structural parameters allowing to adjust drilling mud density in a wide range. One of the disadvantages of invert muds is their cost (due to oil content) and environmental problems associated with waste and management of oily drill cuttings. Taking into account the properties of oil-based muds, the article presents laboratory tests aimed at developing the composition of an invert mud with a limited oil phase content and high internal phase ratio (HIPR). Drilling muds with an o/w ratio less or equal to 50/50 vary from conventional inversion muds in terms of their composition and properties. Due to the higher concentration of the dispersed inner phase, muds have reduced stability and high rheological and structural parameters. Maintaining the appropriate rheological and structural parameters of the drilling mud and its high stability is possible only through the use of appropriate chemicals adapted to the emulsion system with a specific oil to water phase ratio. In the drilling muds of this type it is also possible, due to the higher concentration of the internal phase, to partially adjust the density of the mud with the water phase, such as salt solutions, thus limiting the solids content (weighting agents) in the mud. The developed mud system should be more economical, have a reduced toxicity, while maintaining the operational advantages of invert mud. These types of muds can be used during the drilling of reactive shale formations, salt layers, gypsum and anhydrite layers, as well as for drilling productive horizons and for reconstruction works carried out in oil and gas wells.

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Section: Wstępunclassified

Odwracalne ciecze emulsyjne o wysokim stężeniu fazy wewnętrznej (HIPR)

Błaż¹,

Badawczy²

2021

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“…The conducted research contributes to the development of chemical compounds such as esters, polyalphaolefins, ethers and acetyls, linear alkylbenzene (LAB), linear alpha-olefine (LAO) and internal (isomeric) olefin. Among the presented chemical compounds, the esters and chemical compounds from the olefin group have the greatest application in drilling fluid technology [11][12][13][14][15][16].…”

Section: Introductionmentioning

confidence: 99%

Invert Drilling Fluids with High Internal Phase Content

et al. 2021

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One of the most important tasks when drilling a borehole is to select the appropriate type of drilling fluid and adjust its properties to the borehole’s conditions. This ensures the safe and effective exploitation of the borehole. Many types of drilling fluids are used to drill holes for crude oil and natural gas. Most often, mainly due to cost and environmental constraints, water-based muds are used. On the other hand, invert drilling fluids are used for drilling holes in difficult geological conditions. The ratio of the oil phase to the water phase in invert drilling fluids the most common ratio being from 70/30 to 90/10. One of the disadvantages of invert drilling fluids is their cost (due to the oil content) and environmental problems related to waste and the management of oily cuttings. This article presents tests of invert drilling fluids with Oil-Water Ratio (OWR) 50/50 to 20/80 which can be used for drilling HPHT wells. The invert drilling fluids properties were examined and their resistance to temperature and pressure was assessed. Their effect on the permeability of reservoir rocks was also determined. The developed invert drilling fluids are characterized by high electrical stability ES above 300 V, and stable rheological parameters and low filtration. Due to the reduced content of the oil, the developed drilling fluid system is more economical and has limited toxicity.

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“…Hermoso et al (2015) proved that for low organoclay concentration added in oil-drilling mud, the yield stress varies linearly with organoclay concentration and for a higher concentration of organoclay, the yield stress varies according to a power law. Geng et al (2019) studied the influence of three different organoclay such as the organosepiolite, organo-hectorite and organo-montmorillonite on rheological properties and microstructure of oil-drilling muds. It has been demonstrated that the organo-hectorite is more effective to improve the rheological properties of invert emulsion at high temperature than organo-sepiolite and organo-montmorillonite.…”

Section: Introductionmentioning

confidence: 99%

Impact of organophilic clay on rheological properties of gasoil-based drilling muds

Bergane

Hammadi

2020

J Petrol Explor Prod Technol

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In this study, the impact of VG69 organophilic clay on the rheological properties of gasoil-based drilling muds (invert emulsions) was investigated. The flow curves of gasoil-based drilling muds as a function of the dose of VG69 organophilic clay were analyzed by the Casson model. The addition of VG69 organophilic clay with a quantity range between 0 and 5 g in gasoil-based drilling muds induces an increase in the yield stress and the viscosity at an infinite shear rate of drilling muds. It is also proven that the addition of VG69 organophilic clay leads to an increase in the viscoelastic and thixotropic properties of the drilling muds. The study of the stability of gasoil-based drilling muds by centrifugation showed that for a quantity of VG69 organophilic clay lower than 3 g, the stability of the drilling muds increases and for a quantity of VG69 organophilic clay higher than 3 g, their stability decreases. The results obtained showed that the addition of 3 g of VG69 organophilic clay to the gasoil-based drilling mud increased the yield stress by 230%, the viscosity at an infinite shear rate by 3.4% and it improved the mud stability by 70%.

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Rheological study on the invert emulsion fluids with organoclay at high aged temperatures

Cited by 15 publications

References 38 publications

Odwracalne ciecze emulsyjne o wysokim stężeniu fazy wewnętrznej (HIPR)

Odwracalne ciecze emulsyjne o wysokim stężeniu fazy wewnętrznej (HIPR)

Invert Drilling Fluids with High Internal Phase Content

Impact of organophilic clay on rheological properties of gasoil-based drilling muds

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