Pressure Losses of Non-Newtonian Fluids in Drilling Operations

Demirdal, Barkim; Cunha, José C.

doi:10.2523/108711-ms

Cited by 1 publication

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“…High plastic viscosity and yield point may cause excessive circulating pressure loss. Precise estimation of circulating pressure loss is essential in drilling and well completion operations to control formation pressures and optimize drilling and completion fluids hydraulic programs [2]. Increase of Equivalent Circulating Density (ECD) may result in the fractured of formation, or it may result in that the needed pump pressure for circulation out of its rated pressure.…”

Section: Introductionmentioning

confidence: 99%

Study and Application of Permitted Yield Point Control Boundary of Drilling Fluid

Yao¹,

Jiang²,

Li³

et al. 2014

TOPEJ

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To consider the needs for drilling and the principles of carry and suspend formation cuttings, the permitted yield point control boundary model of drilling fluid was derived using solid-liquid dynamics under certain given assumptions. Corresponding calculation software was developed in c#. The results show that: Any one of the drilling fluid density, pump discharge, plastic viscosity and drilling fluid pump cylinder bore increases would result in the permitted yield point control boundary which turned out to be narrow. Drilling fluid pump discharge is the main cause of the decrease in the upper range of the permitted yield point control boundary. While drilling fluid density is the main cause of the decrease in the lower range. Application had shown the practicality and accuracy of this model in Tarim oil field KS8 well.

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Section: Introductionmentioning

confidence: 99%