Classification and petrophysical characterization of carbonate reservoir rocks in the Red River Basin | |
| Author | Ta Thi Hoa |
| Call Number | AIT Thesis no.GE-16-15 |
| Subject(s) | Carbonate rocks Carbonate reservoirs--Evaluation Petroleum--Geology |
| Note | A thesis submitted in partial fulfillment of the requirements for the degree of Master of Engineering in Geotechnical and Earth Resources Engineering with Area of Specialization in Geo-exploration and Petroleum Geoengineering, School of Engineering and Technology |
| Publisher | Asian Institute of Technology |
| Series Statement | Thesis ; no. GE-16-15 |
| Abstract | This study performs an integrated method using thin section andwell log data to determine rock fabrics and their relationship with rock pore systemin the Pre-Tertiary carbonate basementof well RR01, Northern Red River Basinand Miocene carbonate reservoirsof well RR02, Southern Red River Basin. By carrying out thin section analysis, mineral components and pore types of carbonate rocks were estimated, creating a basis for carbonate classification and grouping samples into different petrophysical classes. Zoning, mineral identification and porosity estimation were then conducted based on the combination of different log curves, including GammaRay (GR), Photoelectric factor (PEF), Neutronporosity (NPHI), Density (RHOB) and Sonic (DT).In well RR01, five zoneswere determined in the interval of300m-thick carbonate basement, in which three zones were recognized as limestone and two zones were identified as dolostone. Corresponding to thesecarbonate types, fourtypes of rock fabricwere found, including grainstone, grain-dominated packstone, mud-dominated packstone and wackstone.In well RR02, carbonate reservoir was mostly made up by limestoneandcould bedivided into two zones with lowerzoneaffected by dolomitization. Four types of rock fabricswere diagnosed along nearly 90m-thick carbonate reservoir, namely,grainstone, grain-dominated packstone, wackstone and boundstone. According to Lucia’s(1995)classification, twomain pore typeswere found correspondingto each identified carbonate fabric, including interparticle and vuggy pores. The vug was further subdivided into separate-vug and touching vug. For both wells, the interparticle and touching vug porosity were estimatedin range of 1.2 –6.5%and0.15 –11.6%, respectively,for wellRR01and variedfrom 5.9% to 10%and 2.9% -21.5%, respectively,for well RR02.Noteworthy finding was the fracture porosity calculated by 2D and 3D resistivity models in well RR01thatfittedquite well to the fracture porosity estimated from thin section analysis. The resultsof this study were compared to the result of well A,HR structure (Chung, 2015). There are some similarities found in carbonate basement of well RR01 and well A, including fabricsand pore types. |
| Year | 2017 |
| Corresponding Series Added Entry | Asian Institute of Technology. Thesis ; no. GE-16-15 |
| 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;Lieu Kim Phuong; |
| Scholarship Donor(s) | AITCV Silver Anniversary Scholarships; |
| Degree | Thesis (M. Eng.) - Asian Institute of Technology, 2017 |