Welcome To UTPedia

We would like to introduce you, the new knowledge repository product called UTPedia. The UTP Electronic and Digital Intellectual Asset. It stores digitized version of thesis, dissertation, final year project reports and past year examination questions.

Browse content of UTPedia using Year, Subject, Department and Author and Search for required document using Searching facilities included in UTPedia. UTPedia with full text are accessible for all registered users, whereas only the physical information and metadata can be retrieved by public users. UTPedia collaborating and connecting peoples with university’s intellectual works from anywhere.

Disclaimer - Universiti Teknologi PETRONAS shall not be liable for any loss or damage caused by the usage of any information obtained from this web site.Best viewed using Mozilla Firefox 3 or IE 7 with resolution 1024 x 768.

EXPERIMENTAL STUDY ON OIL WELL CEMENT RESISTANCE TOWARDS HYDROCHCLORIC ACID ATTACK

KAH KHENG, LIM (2010) EXPERIMENTAL STUDY ON OIL WELL CEMENT RESISTANCE TOWARDS HYDROCHCLORIC ACID ATTACK. Universiti Teknologi Petronas. (Unpublished)

[img] PDF
Download (3485Kb)

Abstract

Hydrochloric acid (HCI) and Hydrofluoric acid (HF) are used in acidizing treatment to stimulate oil and gas production. It is proven that these acids had successfully increased the oil well production worldwide. However, on the other hand, it has been observed that several oil wells, after submitted to acidizing operations, exhibited zonal intercommunication problems. This is attributed to the occurrence of reactions between the hardened cement slurry in the annulus and the acid. The indication of cement deterioration is the motivation of an extensive experimental program to study the involved mechanisms. The objectives of this study are to investigate the effect of curing temperature and pressure towards the compressive strength and acid resistance towards Class G oilwell cement. Various concentration of HCI solution is exposed to cement cube samples under different curing condition for the analysis of samples of hardened cement slurries (2-inch cement cube), aiming the verification of changes in chemical compositions due to acid attack. Also, the tests are conducted on the analysis of the acid solutions, aiming the identification and quantification of the elements liberated from the cement into the acid solutions. The techniques of X-ray fluorescence (XRF) , Scanning Electron Microscopy (SEM) and equipment compressive strength tester are to be used for this purpose. Based on the results, the depth of the acid attack and the influence of the acid solution composition and of the cement chemical composition on the degree of acid attack are to be evaluated. In previous study, it is observed that HCI will react with calcium oxide forming calcium chloride and water. The higher the curing temperature and pressure, the stronger the compressive strength of the sample of cement slurries, leading to the stronger acid attack resistance. This study will enable a better comprehension of the process of acid attack on cement, and consequently a reduction of this problem in the field will be obtained.

Item Type: Final Year Project
Academic Subject : Academic Department - Chemical Engineering - Environment
Subject: T Technology > TP Chemical technology
Divisions: Engineering > Chemical
Depositing User: Users 2053 not found.
Date Deposited: 22 Oct 2013 11:56
Last Modified: 25 Jan 2017 09:42
URI: http://utpedia.utp.edu.my/id/eprint/9368

Actions (login required)

View Item View Item

Document Downloads

More statistics for this item...