"Bulletin of the Association of Drilling Contractors" №2, 2019

COMPARATIVE HYDRAULIC ANALYSIS OF WELL WASHING WHEN COILED TUBING DRILLING WITH ELECTRODRILL AND PDM

Emirov Z.A. – Master of Science in Petroleum Engineering, Gubkin Russian State University of Oil and Gas (National Research University), emirov.z.a@gmail.com
Gelfgat M.Ya. – Candidate of Technical Sciences, Professor of the Gubkin Russian State University of Oil and Gas (National Research University), mikhailgelfgat@gmail.com



Key words: coiled tubing, coiled tubing drilling, electric downhole motor, electrodrill, electrodrilling, hydraulic analysis, well washing.

This article presents the comparative hydraulic analysis of well washing when coiled tubing drilling. The analysis considers electric drilling with the presence of a power cable inside the coiled tubing and drilling with positive displacement motor (PDM). The graphs of pressure distribution along the wellbore with horizontal completion where presented and the conclusions made.




 

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