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ZnO–clay nanocomposites for enhance drilling at HTHP conditions
Author(s) -
Abdo J.,
Zaier R.,
Hassan E.,
ALSharji H.,
AlShabibi A.
Publication year - 2014
Publication title -
surface and interface analysis
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.52
H-Index - 90
eISSN - 1096-9918
pISSN - 0142-2421
DOI - 10.1002/sia.5454
Subject(s) - drilling fluid , rheology , nanocomposite , bentonite , materials science , drilling , organoclay , scanning electron microscope , composite material , viscosity , chemical engineering , metallurgy , engineering
Zinc oxide (ZnO) has received lot of attention as a nanostructured material because of unique properties rendering it for various applications. Severe drilling problems like pipe sticking, formation damage and high torque and drag are common in extended reach hydrocarbon wells that limit the performance of drilling operations. Bentonite (MMT) is commonly used as a rheology modifier, and attapulgite (ATP) has good Fann viscosity for use in drilling fluids, but both clays face the limitations of flocculation and instability at high temperature and pressure conditions (HTHP). ZnO–clay nanocomposites were formed by incorporating nano‐ZnO in nano‐modified MMT and ATP to maintain remarkable colloidal dispersion and superior rheology, thus enabling homogeneous drilling fluid recipes. ZnO–clay nanocomposites were characterized using scanning electron microscopy and X‐ray diffraction. After successive laboratory investigations, drilling fluid compositions of certain proportions of water and MMT in the presence of ZnO–clay nanocomposite yielded perfect stability at high temperatures and pressure, i.e. stable drilling fluid rheology at HTHP conditions. The best‐recorded results are reported in this paper, and the properties focused here are the plastic viscosity and yield point. Copyright © 2014 John Wiley & Sons, Ltd.