eprintid: 2992
rev_number: 2
eprint_status: archive
userid: 1
dir: disk0/00/00/29/92
datestamp: 2023-11-09 15:51:15
lastmod: 2023-11-09 15:51:15
status_changed: 2023-11-09 15:44:44
type: conference_item
metadata_visibility: show
creators_name: Padmanabhan, E.
title: Perturbation of homogeneous thermal conductivity distribution in some carbonates by stylolites
ispublished: pub
keywords: Conductivity anomalies; Conductivity distributions; Conductivity estimation; Gas productions; High degree of variability; High density; Homogeneous distribution; Hydrocarbon resources; Low density; Malaysia; Spatial variations; Stylolite; Thermal maturation, Carbonate minerals; Fracture; Hydrocarbons; Petroleum engineering; Petroleum reservoir evaluation, Thermal conductivity
note: cited By 0; Conference of International Petroleum Technology Conference 2012, IPTC 2012 ; Conference Date: 7 February 2012 Through 9 February 2012; Conference Code:89836
abstract: Stylolites are partings within rocks that exhibit complex mutual column and socket interdigitization. These features can exhibit pronounced roughness on several scales. Stylolites, under deep-burial conditions, could permit circulation of undersaturated fluids and become reservoirs allowing also deep commercial gas production. However, the impact of stylolites on variations in thermal conductivity in carbonates is not well-known. This study was undertaken to investigate the heterogeneity in thermal conductivity in a variety of carbonate specimens containing different types of stylolites. A total of 9 carbonate samples from Turki were used in this study. These sampes were imported into Malaysia by a local factory. The stylolites were classified into three types. Type 1 (sharp-peak) has well defined and high density (4 amplitudes per cm) fractures. Type 2 (simple wave-like) is intermediate whereas type 3 (sutured) has poorly defined and low density (< 1 amplitude per cm) fractures. The thermal conductivity of type 2 (mean = 3.30 W m -1K -1) was the highest and that of type 3 (mean = 1.35 W m -1K -1) was lowest. Similar trends were recorded for non-stylolitic faces of the three carbonates specimens mentioned above. Faces with stylolites showed a high degree of variability in terms of thermal conductivity when estimated at various points. Surfaces with stylolites tend to show different thermal conductivity values than non-stylolitic faces. The reduction in porosity, type of stylolite and a possible effect of different orientation of the carbonate minerals in the stylolites, appears to perturb the homogeneous distribution of thermal conductivity in these carbonates. The study indicates that thermal conductivity estimation is point-dependant. The perturbations created by the stylolites would result in spatial variations in thermal conductivity with possible implications of differences in thermal maturation of hydrocarbon resources at the micro-site levels. Copyright 2011, International Petroleum Technology Conference.
date: 2012
official_url: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84861322919&partnerID=40&md5=76312dc17086067a9803c93fcff2cff3
full_text_status: none
publication: Society of Petroleum Engineers - International Petroleum Technology Conference 2012, IPTC 2012
volume: 1
place_of_pub: Bangkok
pagerange: 169-175
refereed: TRUE
isbn: 9781618396594
citation:   Padmanabhan, E.  (2012) Perturbation of homogeneous thermal conductivity distribution in some carbonates by stylolites.  In: UNSPECIFIED.