Well log analysis of Thin reservoir zones and source rock maturity in Sansai oil field, Fang Basin, Thailand | |
| Author | Jirawat Suppithayakorn |
| Call Number | AIT Thesis no.GE-17-13 |
| Subject(s) | Logging--Thailand Reservoir--Thailand |
| Note | A thesis submitted in partial fulfillment of the requirements for the degree of Master of Engineering in Geotechnical Earth Resources Engineering with area of specialization in Geosystem Exploration and Petroleum GeoengineeringResources Engineering with Area of Specialization in Geosystem Exploration and Petroleum Geoengineering, School of Engineering and Technology |
| Publisher | Asian Institute of Technology |
| Series Statement | Thesis;no. GE-17-13 |
| Abstract | Covering an area of 600 km2 the oldest oil field of Thailand, Fang oil field has been operating since 1921 under the Defense Energy Department (DED) of the Royal Thai Government and divided into 3 sub-basins, Huai Pa Sang, Huai Ngu and Pa Ngew in North, Central and South respectively. This thesis selected Sansai oil field in central Fang as the study area and choose well number FA-SS-37-05 and FA-SS-37-07 to interpretation. The purpose of this study is to perform the well log analysis technique and find out more reservoirs, in particular the thin bed which are increasingly needed to sustain the production. Three main work in this study included: (i) Quick look analysis of well logging data from two well, FA-SS-37-05 and FA-SS-37-07 to identify the shale and sand zones, (ii) Cross-plots to identify lithology and fluid of the reservoir zones, and (iii) to apply the ΔLogR method to determine the TOC of the source rock layers in two analysis well The main results of the first work are known that the sand layers number 62 in well, FA-SS-37-05 at depth 3558.5-3888 feet and sand layers number 59 in well, FA-SS-37-07 at depth 4880.0-4095.0 feet could be a good thin reservoir, because it is high value of resistivity, permeability and hydrocarbon saturation. The results of second analysis are cross plots to identify lithological and fluid by using elastic parameters in hydrocarbon zones of well number FA-SS-37-05 and FA-SS-37-07 provided range of elastic parameters as follow; Vp/Vs provided range around 1.5-2.0, AIp(g/cc. km/s) provided range around 2.0 - 4.0, AIs(g/cc. km/s) provided range around 1.0-2.8, λρ(Gpa.g/cc) provided range around 0.2-10.0 and Mρ(Gpa.g/cc) provided range around 3.5-10.0. The results of final analysis are TOC estimation. It can estimate the value of total organics carbon throughout the bore hole by using relationship between resistivity and sonic logging curve. Furthermore, when put the values of ΔlogR and TOC in level of maturity template, it will allow to know the level of maturity in each hole. From well number FA-SS-37-05 has range of LOM around 8-10 and from well number FA-SS-37-07 have two ranges of LOM are around 5-8 and 9.5- 12. |
| Year | 2018 |
| Corresponding Series Added Entry | Asian Institute of Technology. Thesis;no. GE-17-13 |
| Type | Thesis |
| School | School of Engineering and Technology (SET) |
| Department | Department of Civil and Infrastucture Engineering (DCIE) |
| Academic Program/FoS | Geotechnical Engineering (GE) |
| Chairperson(s) | Pham, Huy Giao; |
| Examination Committee(s) | Noppadol Phien-wej;Chao, Kuo Chieh;Pinan Dawkrajai; |
| Scholarship Donor(s) | Royal Thai Government Fellowship; |
| Degree | Thesis (M.Eng.) - Asian Institute of Technology, 2018 |