Performance of nanoparticles as fluid loss additives in polymer-clay drilling fluids

As oil discoveries become deeper and hostile, there is a need to improve the existing drilling fluids or to design a new ones which is more environmentally friendly with zero impact on the environment. Polymers and bentonite have been used as viscosifier and fluid loss control in drilling fluids and...

Full description

Saved in:

Bibliographic Details
Main Author:	Hera, Elisabet Sabu
Format:	Thesis
Language:	English
Published:	2014
Subjects:	Q Science (General) TP Chemical technology
Online Access:	http://eprints.utm.my/id/eprint/99332/1/ElisabetSabuHeraMSChE2014.pdf
Tags:	Add Tag No Tags, Be the first to tag this record!

id	my-utm-ep.99332
record_format	uketd_dc
spelling	my-utm-ep.993322023-02-22T08:23:07Z Performance of nanoparticles as fluid loss additives in polymer-clay drilling fluids 2014 Hera, Elisabet Sabu Q Science (General) TP Chemical technology As oil discoveries become deeper and hostile, there is a need to improve the existing drilling fluids or to design a new ones which is more environmentally friendly with zero impact on the environment. Polymers and bentonite have been used as viscosifier and fluid loss control in drilling fluids and also can be used in almost any type of water and as a suspending agent. The applications of nanoparticles in drilling fluids is mainly to form a thin layer of non-erodible and impermeable nanoparticles membrane around the wellbore which prevents common problems like clay swelling, spurt loss and mud loss due to the circulation. The nanoparticles have high surface to volume ratio, therefore for any application the quantity of nanoparticles required will be less and hence there is cost advantage. In this study, the performance of nanosilica and multi walled carbon nanotubes (MWCNT) as fluid loss additives in polymer-clay mud were investigated at HPHT conditions with varying nanoparticles concentration and temperature. Before aging, plastic viscosity, yield point and gel strength of mud with nanoparticles shows an increasing trend as the concentration of nanoparticles increased from 0.01g to 1g. Mud with nanosilica gives the highest filtrate loss of 12ml and mudcake thickness of 10.24inch at 1g concentration and 300°F.Whereas, mud with MWCNT shows a decreasing trend in filtrate loss and mudcake thickness as nanoparticles concentration increased. However, filtrate loss for mud with nanoparticles is still high as compared to control mud. The finding shows that xanthan gum containing 1g MWCNT gives 4.9ml filtrate loss and mudcake thickness of 4.48inch at 200°F. After aging, plastic viscosity, yield point and gel strength of mud containing nanoparticles decrease significantly especially for 1g of nanosilica and 0.01g MWCNT. Filtrate loss and mudcake thickness also increased when the mud is exposed to temperature above 250°F. As a conclusion, xanthan gum with MWCNT gives a promising result in terms of rheological performance and form a thin, stable and uniform mudcake. 2014 Thesis http://eprints.utm.my/id/eprint/99332/ http://eprints.utm.my/id/eprint/99332/1/ElisabetSabuHeraMSChE2014.pdf application/pdf en public http://dms.library.utm.my:8080/vital/access/manager/Repository/vital:147919 masters Universiti Teknologi Malaysia, Faculty of Engineering - School of Chemical & Energy Engineering Faculty of Engineering - School of Chemical & Energy Engineering
institution	Universiti Teknologi Malaysia
collection	UTM Institutional Repository
language	English
topic	Q Science (General) TP Chemical technology
spellingShingle	Q Science (General) TP Chemical technology Hera, Elisabet Sabu Performance of nanoparticles as fluid loss additives in polymer-clay drilling fluids
description	As oil discoveries become deeper and hostile, there is a need to improve the existing drilling fluids or to design a new ones which is more environmentally friendly with zero impact on the environment. Polymers and bentonite have been used as viscosifier and fluid loss control in drilling fluids and also can be used in almost any type of water and as a suspending agent. The applications of nanoparticles in drilling fluids is mainly to form a thin layer of non-erodible and impermeable nanoparticles membrane around the wellbore which prevents common problems like clay swelling, spurt loss and mud loss due to the circulation. The nanoparticles have high surface to volume ratio, therefore for any application the quantity of nanoparticles required will be less and hence there is cost advantage. In this study, the performance of nanosilica and multi walled carbon nanotubes (MWCNT) as fluid loss additives in polymer-clay mud were investigated at HPHT conditions with varying nanoparticles concentration and temperature. Before aging, plastic viscosity, yield point and gel strength of mud with nanoparticles shows an increasing trend as the concentration of nanoparticles increased from 0.01g to 1g. Mud with nanosilica gives the highest filtrate loss of 12ml and mudcake thickness of 10.24inch at 1g concentration and 300°F.Whereas, mud with MWCNT shows a decreasing trend in filtrate loss and mudcake thickness as nanoparticles concentration increased. However, filtrate loss for mud with nanoparticles is still high as compared to control mud. The finding shows that xanthan gum containing 1g MWCNT gives 4.9ml filtrate loss and mudcake thickness of 4.48inch at 200°F. After aging, plastic viscosity, yield point and gel strength of mud containing nanoparticles decrease significantly especially for 1g of nanosilica and 0.01g MWCNT. Filtrate loss and mudcake thickness also increased when the mud is exposed to temperature above 250°F. As a conclusion, xanthan gum with MWCNT gives a promising result in terms of rheological performance and form a thin, stable and uniform mudcake.
format	Thesis
qualification_level	Master's degree
author	Hera, Elisabet Sabu
author_facet	Hera, Elisabet Sabu
author_sort	Hera, Elisabet Sabu
title	Performance of nanoparticles as fluid loss additives in polymer-clay drilling fluids
title_short	Performance of nanoparticles as fluid loss additives in polymer-clay drilling fluids
title_full	Performance of nanoparticles as fluid loss additives in polymer-clay drilling fluids
title_fullStr	Performance of nanoparticles as fluid loss additives in polymer-clay drilling fluids
title_full_unstemmed	Performance of nanoparticles as fluid loss additives in polymer-clay drilling fluids
title_sort	performance of nanoparticles as fluid loss additives in polymer-clay drilling fluids
granting_institution	Universiti Teknologi Malaysia, Faculty of Engineering - School of Chemical & Energy Engineering
granting_department	Faculty of Engineering - School of Chemical & Energy Engineering
publishDate	2014
url	http://eprints.utm.my/id/eprint/99332/1/ElisabetSabuHeraMSChE2014.pdf
_version_	1776100591266693120

Performance of nanoparticles as fluid loss additives in polymer-clay drilling fluids

Similar Items