Hole cleaning and drilling fluid sweeps in horizontal and deviated wells: Comprehensive review

Mahmoud, Husameldin; Hamza, Ahmed; Nasser, Mustafa S.; Hussein, Ibnelwaleed A.; Ahmed, Ramadan; Karami, Hamidreza

doi:10.1016/j.petrol.2019.106748

Cited by 85 publications

(34 citation statements)

References 41 publications

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“…When compared with conventional drilling methods, the horizontal well has more advantages in improving well production and reducing costs. Horizontal well technology has broad application prospects in oil and gas reservoir exploration and development [3][4][5][6][7].…”

Section: Introductionmentioning

confidence: 99%

“…Inadequate hole cleaning can cause downhole safety accidents, such as pipes becoming stuck, premature bit wear, slow rate of penetration (ROP), formation fracturing, excessive torque and drag on the drillstring, as well as difficulties in logging and cementing. Inadequate removal of drill cuttings is a primary challenge in horizontal well drilling and may increase the cost and risk of drilling while increasing the non-productive time (NPT) [3,[8][9][10][11][12][13][14]. Therefore, it is essential to effectively alleviate inadequate hole cleaning during horizontal well drilling.…”

Section: Introductionmentioning

confidence: 99%

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Numerical Simulation of Effective Hole Cleaning by Using an Innovative Elliptical Drillpipe in Horizontal Wellbore

Yan

Sun

2022

Energies

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In the drilling of horizontal wells, the drill cuttings tend to settle down on the low side of the annulus due to gravity and form a stationary bed, which results in hole cleaning problems. In this paper, a novel type of drillpipe with an elliptical shape was proposed to alleviate inadequate hole cleaning during the drilling of horizontal wells. A three-dimensional computational fluid dynamic (CFD) Eulerian-Eulerian approach with the Realizable k-ɛ turbulence model was developed to predict the solid–liquid two-phase flow in the annular space. Numerical examples were given to investigate the influence of different parameters on cuttings’ transport behavior, and the elliptical drillpipe was compared with the circular drillpipe. The annular cuttings concentration, annular pressure drop, and hole cleaning efficiency were evaluated. The numerical results clarify the potential of the elliptical drillpipe to enhance the hole cleaning efficiency without significantly increasing the annular pressure drop. Due to the swirl flow and secondary flow caused by the rotation of the curvature wall, the swaying phenomenon of drill cuttings’ distribution along the rotation direction of drillpipe was observed and enhanced the cuttings transport ability. Using the elliptical drillpipe as a joint-type tool can improve hole cleaning performance. Under the optimum conditions applied in this study, the hole cleaning efficiency increased by nearly 18%.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Numerical Simulation of Effective Hole Cleaning by Using an Innovative Elliptical Drillpipe in Horizontal Wellbore

Yan

Sun

2022

Energies

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“…Eles desempenham um papel crucial nas operações de perfuração de poços de petróleo. Os fluidos de perfuração são categorizados em três tipos com base no fluido de base usado, ou seja, fluido de perfuração à base de água, à base de óleo e à base de gás (Mahmoud et al, 2019). Os fluidos de perfuração base água são preferíveis porque são mais baratos, ecológicos e capazes de mitigar problemas de controle de poço (Al-Khdheeawi & Mahdi, 2019).…”

Section: Introductionunclassified

Formulação de fluidos aquosos para a perfuração de poços onshore / Aqueous fluid formulation for onshore well drilling

Nóbrega¹,

Gomes²,

Silva³

2022

BJDV

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Devido aos grandes desafios encontrados na perfuração de poços e a preocupação cada vez maior com o meio ambiente, é necessário desenvolver fluidos de perfuração com propriedades adequadas, capacidade de atender todas as exigências da perfuração, de menor impacto ambiental possível. O impacto do fluido ao meio ambiente está diretamente relacionado à sua base, se é óleo, água ou ar. Este trabalho teve como principal objetivo desenvolver fluidos aquosos com baixo teor de sólidos e propriedades reológicas adequadas à perfuração de poços de petróleo onshore. Os fluidos elaborados foram compostos de bentonita industrializada, e alguns aditivos. As curvas de fluxo de ambos os fluidos, apresentaram um perfil característico do modelo de Ostwald de Waale, correspondente a um fluido com comportamento pseudoplástico. Essa característica é muito importante para fluidos de perfuração, já que fluidos pseudoplásticos apresentam uma redução na viscosidade com o aumento da vazão (taxa de cisalhamento), facilitando assim o escoamento durante a perfuração.

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“…Drilling is accomplished with the use of a drilling bit connected to a long string of drill pipe. By applying weight and rotation on the bit, the bit crushes the rock into small fragments, the cuttings [11,12]. Drilling fluid is circulated from the surface, through the drill pipe to the bit face; it lifts the generated cuttings and brings them to the surface, where separation equipment removes the cuttings from the drilling fluid, which is circulated, with the help of powerful pumps, back to the wellbore [11,13].…”

Section: Introductionmentioning

confidence: 99%

Introducing a Rheology Model for Non-Newtonian Drilling Fluids

et al. 2021

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An API standard drilling fluid was investigated from laminar to turbulent flow conditions using an in-house-built viscometer at speeds from 200 to 1600 RPM. A power-based method was applied to obtain the apparent viscosity and the shear stress of the water-based drilling mud (WBM) in the annulus of the viscometer. Then, a MATLAB optimization program was developed to obtain model parameters for five rheology models integrated in a generalized Herschel-Bulkley-Extended (HBE) model and two widely used 4-parameter models in drilling industry. It is found that the Bingham, Cross, and HBE rheology models have precisely matched the WBM measurements in the viscometer. A generalized Reynolds number was applied to determine the Darcy friction factor although the PL (power law model) and the HB (Herschel-Bulkley model) exhibited a nonrealistic negative shift from the laminar friction factor.

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Hole cleaning and drilling fluid sweeps in horizontal and deviated wells: Comprehensive review

Cited by 85 publications

References 41 publications

Numerical Simulation of Effective Hole Cleaning by Using an Innovative Elliptical Drillpipe in Horizontal Wellbore

Numerical Simulation of Effective Hole Cleaning by Using an Innovative Elliptical Drillpipe in Horizontal Wellbore

Formulação de fluidos aquosos para a perfuração de poços onshore / Aqueous fluid formulation for onshore well drilling

Introducing a Rheology Model for Non-Newtonian Drilling Fluids

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