SCALES AND CHARACTERISTICS OF HETEROGENEITY IN SANDSTONE RESERVOIRS (AIRPORT ROAD, MIRI, SARAWAK)

• Main Author: MOHAMMAD, NURUL FATHIAH
• Format: Final Year Project
• Language: English
• Published: 2011
• Subjects: T Technology (General)
• Online Access: http://utpedia.utp.edu.my/id/eprint/27401/1/full%20final%20dessertation_merged.pdf; http://utpedia.utp.edu.my/id/eprint/27401/

Heterogeneity in a hydrocarbon reservoir is referred to non-uniform, nonlinear spatial distribution of rock properties. Characterizing rock permeability and its special distribution in a heterogenous reservoir is a problem with no direct and known solution. This project focused on characterization of porosity and permeability of the sandstone reservoir of Miri Airport Road Formation. This objective is achieved by examining some of the petrophysical properties and rock physics samples (such as porosity and permeability). Outcrop belonging to the hydrocarbon bearing Miri formation of Miri Airport Road is roughly 551cm in thickness. The study area consists of six (6) distinctive facies (facies A, B, C, D, E and F). Each facies are differes in thickness, facies internal structure, grain size, porosity and permeability. Different grain sizes, facies internal structure, flow barriers, presence of shale contents play significant effect to porosity and permeability which makes the reservoir heterogenous. Among thses six (6) layers, the best sandstone for reservoir is layer A because it has a net-to-gross thickness of 23%, porosity value of 26.06% and permeability value of 76.58 mD.