Optimizing Synthetic Oil Based Fluids for Milling Operations in Deepwater Wells

Abstract

TX 75083-3836, U.S.A., fax 01-972-952-9435. AbstractThis paper deals with the adaptation of synthetic drilling fluid for use in milling operations in offshore wells. Main topics covered include: a discussion on the fundamentals of solids transport highlighting the critical aspects of transporting iron particles in offshore wells; a computer simulation task, based on solids transport mechanistic models, to define minimum requirements for fluid flow rates and rheological properties; an extensive experimental work comparing the carrying capacity of water and synthetic based fluids and; the process of field implementation concentrating on well succeeded experiences in the offshore fields operated by PETROBRAS.

Synthesis of a Dendrimer as Rheological Modifier for Deep-Water Drilling Fluids and Study of its Interaction with Organo-Clay at Different Temperatures

“…The main difference between OBM and SBM is the type of base oil. The former mainly includes diesel and mineral oil while the other one mainly consists of synthetic esters, linear alpha olefins, gas oil, etc [1][2]. Compared with water-based drilling fluids, OBM/SBM show excellent abilities of inhibition, lubricity, and reservoir protection, which makes them a great advantage in deep-water drilling.…”