A model on dual string drilling: on the road to deep waters

Thakar, Vivek; Nambiar, Sachin; Shah, Manan; Sircar, Anirbid

doi:10.1007/s40808-018-0457-6

Cited by 12 publications

(2 citation statements)

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“…To make the mathematical formulation of the relationships representing constraints on the properties of the drilling fluid, which are summarized in table (1), we simplify the relationship by choosing the most common case of drilling wells (laminar flow in the annulus and turbulent flow pipe), because the relationship can be formulated in the form of first-order linear mathematical equations for each constraint on the properties of the drilling fluid (see (5)…”

Section: Selection Of a Well Clean Programmentioning

confidence: 99%

“…It is widely acknowledged that laying together a well-organized program is important. It is based on a series of interrelated recommendations arising from a thorough examination of the substance of the phenomena that accompany the well cleaning activity [1][2][3]. Such recommendations, however, are stated in the form of mathematical relations, such as models, which indicate the legality of modifying a coefficient or in connection to influencing elements.…”

Section: Introductionmentioning

confidence: 99%

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Estimation of optimal lifting capacity in annulus

Ismai

Terzi

Al-bayati

2022

PEN

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The optimum drilling of oil and gas wells are achieved by reduce costs and time, which will be accomplished with an optimal hydraulic cleaning program. Drilling fluid characteristics, drilling parameters, and well geometrics are regarded as major categories for achieving an optimal hydraulic program based on depth, penetration rate, and flow rate. This study was used a set of equations that related directly and indirectly to estimate the optimal cleaning efficiency in annulus. The procedure is applied here using actual data from an Iraqi oil field to determine the limitation of all parameters that affect the lifting capacity. Cutting transform was regarded as a major element of the well cleaning program as a result of constraints such as avoiding high surge pressure during lifting pipes, high swab pressure when downloading pipes, and fluid loss during rotation. An increase in annular space indicates a decrease in the capacity of drilling fluid to lift cuttings to the surface and an increase in dynamic shear stress. Also, an increase in cutting size, which has a direct relationship with penetration rate that can be effect for cleaning efficacy in annulus.

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Section: Selection Of a Well Clean Programmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%