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Wireline Pore Pressure Estimation Study in Carbonate Setting: Case Study on the Eastern Central Luconia Province, Sarawak

Abu Bakar, Azwa Jannah (2007) Wireline Pore Pressure Estimation Study in Carbonate Setting: Case Study on the Eastern Central Luconia Province, Sarawak. Masters thesis, Universiti Teknologi Petronas.

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Abstract

The pore pressure prediction of clastic sediments usmg traditional methods, such as Eaton and Miller have been widely used in the oil and gas industry, especially when the excess pressure is related to the disequilibrium compaction. These traditional methods rely on the association of porosity with pressure buildup. Porosity or compaction trend is generally predictable for the clastics. However, the compaction trend is not so obvious in carbonate due to diagenesis and dissolution occurring in the carbonates. Three methods involving two different equations from Eaton and Miller, using sonic and resistivity curves, were tested to see whether these methods can be applied to the carbonate environment. The three methods are, the 'pore pressure Miller's equation using NCT calculated from the Miller's equation', the second method are the 'Eaton's pore pressure equation using the visualized freehand drawn NCT on resistivity curve' and the third method is the 'pore pressure calculation using the visualized freehand drawn NCT using the Sonic curve'. From the analysis the best method that can be used was the Eaton method on sonic curves. In the second phase of the analysis, the pressure contribution factor was tested using the basin modeling. Results from the modeling indicated that both thermal and fluid flow as minor pressure contributors in addition to the disequilibrium compaction from sedimentary loading.

Item Type: Thesis (Masters)
Academic Subject : Academic Department - Petroleum Geosciences - Petroleum Engineering - Reservoir characterization and well testing - Well test design and analysis
Subject: T Technology > T Technology (General)
Divisions: Geoscience and Petroleum Engineering
Depositing User: Users 2053 not found.
Date Deposited: 30 Sep 2013 16:55
Last Modified: 25 Jan 2017 09:45
URI: http://utpedia.utp.edu.my/id/eprint/8054

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