Novel Formulation of Environmentally Friendly Oil Based Drilling Mud

Fadairo, Adesina; Falode, Olugbenga; Ako, C. T.; Adeyemi, Abiodun; Ameloko, A.

doi:10.5772/51236

Cited by 19 publications

(14 citation statements)

References 8 publications

(2 reference statements)

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“…Its primary use is to conduct rock cuttings within the well. The drilling mud must be designed such that it can transport the cuttings to surface while circulating, suspend the cuttings when the rig pump is off (not circulating) and drop the cuttings out of suspension at the surface (Fadairo et al, 2012).…”

Section: Drilling and Drill-in Fluidsmentioning

confidence: 99%

“…An optimum drilling fluid according to Fadairo et al, (2012) is one which removes the rock cuttings from the bottom of the borehole and transports them to the surface, hold cuttings and weight materials in suspension when circulation is stopped and also maintains pressure. The optimum drilling fluid also does this at minimum handling cost and bearing in mind the Health, Safety, Environment (HSE) policy.…”

Section: Drilling and Drill-in Fluidsmentioning

confidence: 99%

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Impact Of Reversible Invert Emulsion Drilling Fluid Rheology On Productivity

et al. 2015

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Drilling muds are multi-component fluid systems designed to perform several functions during drilling operation and as a drill-in fluid under varying conditions of temperature and pressure. The use of conventional oil-base mud for drilling can bring with it an associated trade-off in formation damage. For a drilling engineer, oil-base muds control reactive shales, improve penetration rates and enhance overall drilling efficiency. For a reservoir engineer, the oil-wet state of the wellbore and filtercake may present a skin challenge. Reservoir productivity impairment resulting from using oil-base mud takes many forms. It may relate to plugging of completion equipment and gravel packs by poorly displaced oil-wet filtercake. Due to this oil-wet state, oil mud filtercakes and other oil-wet materials deposited during the drilling process are not easily dispersed or removed by cleanup chemicals. Emulsions composed of non-dispersed oil mud and displacement fluids often remain within the wellbore. During production operation, the flow from thereservoir can mobilize these oil-wet materials, plugging completion equipment and pore space. This may significantly impair well performance regardless of its design purpose. The most obvious solution for avoiding oil mud related productivity impairment would be to drill the formation with water-base mud. However, drilling engineers often use oil-base muds to minimize risk and efficiently reach extended drilling targets. The problems associated with oil-mud filtercake cleanup and change over operation during completion operations has prompt this study. Operators and service companies develop and apply novel technologies to improve drilling efficiency and maximize hydrocarbon recovery. This paper presents a review on the principle behind formulation and development of reversible mud with nano additives that will eliminate the hard choice that the drilling engineers have to choose between improving drilling performance and decreasing the risk of completion impairment; they can have both requirements in a single mud system.

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Section: Drilling and Drill-in Fluidsmentioning

confidence: 99%

Section: Drilling and Drill-in Fluidsmentioning

confidence: 99%

Impact Of Reversible Invert Emulsion Drilling Fluid Rheology On Productivity

et al. 2015

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“…The United States Environmental Protection Agency (EPA) and other communities have imposed strict regulations on diesel oils usage as drilling fluid especially in offshore wells for marine life protection. This restriction encouraged the use of synthetic-based drilling fluids as an alternative (Fadairo et al, 2012). Synthetic-based drilling fluids (free from aromatic hydrocarbons), are technically superior and ecologically safe for reducing the environmental problems associated with oil-based drilling fluid.…”

Section: Introductionmentioning

confidence: 99%

Synthesis and Optimization of 2-ethylhexyl Ester as Base Oil for Drilling Fluid Formulation

Jassim

Yunus

Rashid

et al. 2015

Chemical Engineering Communications

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A stable ester was synthesized to overcome the ester hydrolysis problem during the drilling of oil or gas wells using a conventional ester-based drilling fluid. The thermal and hydrolytic stability of the produced ester was high owing to the transesterification method employed in this study. The reaction was performed using 2-ethylhexanol and methyl laureate esters in the presence of sodium methoxide as a catalyst. In order to obtain the optimum synthesis conditions, a response surface methodology (RSM) was appraised based on the central composite design (CCD). The optimum conditions were determined as follows: 0.6 wt.% catalyst, 70 o C reaction temperature, 1:1.5 molar ratio and 11.5 min of reaction time. The results of 77 wt.% 2-ethylhexyl ester illustrated a high agreement between the experimental and RSM models. The reaction product contained 77 wt.% 2-ethylhexyl ester and 23% 2-ethylhexanol. The kinematic viscosity was 5 mm 2 /sec @ 40°C and 1.5 mm 2 /sec @ 100°C; the specific gravity was 0.854, flash point was 170°C and pour point was -7°C. The produced product showed similar properties to Downloaded by [New York University] at 03:09 03 June 2015 2the available commercial prouct. However, it was observed that the mud formulation using the synthesized base oil had superior rheological properties at 121°C.

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“…Oil based muds formulated with diesel oil have proven to be effective in drilling troublesome and high saline shale formations despite being expensive and unfriendly to the environment (Fadairo et al, 2012). This has prompted oil and gas industry stakeholders to carryout research aimed at formulating environmentally friendly oil based mud solutions which can serve as alternatives to the industry standard diesel oil based mud.…”

Section: Introductionmentioning

confidence: 99%

Performance evaluation of oil based drilling fluid formulated with castor oil

Udeagbara¹,

Okereke²,

Kerunwa³

et al. 2021

J. Petroleum Gas Eng.

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Oil based muds formulated from diesel oil have proven to be quite expensive and environmentally unfriendly. This current study focused on investigating the suitability of castor oil in formulating oil based muds. The experiment in this work was conducted at different temperature conditions ranging from 40 to 80°C. The density and specific gravity of castor oil based mud were found experimentally to be 0.3 ppg and 0.4 higher than the density and specific gravity of diesel oil based mud, respectively. Plastic viscosity and gel strength of castor oil based mud were found to be 2 cp and 2 lb/100 , respectively found to be less than those obtained for diesel oil based mud (15 cp and 4 lb/100 , respectively) indicating the ability of castor oil in enhancing rate of penetration and efficient in hole cleaning. Results also show that a thinner filter cake was obtained for castor oil based mud in comparison to diesel muds. This shows that with castor oil based mud, undesirable effects such as differential sticking, loss circulation and poor primary cement jobs are minimized. The result from toxicity test also implied that the drilling mud formulated with castor oil can be easily disposed with less post drilling treatment. In conclusion, oil based mud formulated with castor oil can be used as an alternative to diesel oil based mud for drilling operations because its properties show that it can effectively perform its functions as a drilling fluid. It is also environmentally friendly.

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Novel Formulation of Environmentally Friendly Oil Based Drilling Mud

Cited by 19 publications

References 8 publications

Impact Of Reversible Invert Emulsion Drilling Fluid Rheology On Productivity

Impact Of Reversible Invert Emulsion Drilling Fluid Rheology On Productivity

Synthesis and Optimization of 2-ethylhexyl Ester as Base Oil for Drilling Fluid Formulation

Performance evaluation of oil based drilling fluid formulated with castor oil

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