Evaluation of shale gas potential in the Lower Cretaceous Sembar Formation, the Southern Indus Basin, Pakistan | |
| Author | Sahir, Nosheen |
| Call Number | AIT Diss. no.GE-16-01 |
| Subject(s) | Shale gas. Petroleum. Petroleum--Analysis. |
| Note | A dissertation submitted in partial fulfillment of the requirements for 2 the degree of Doctor of Philosophy 3 in Geotechnical and Earth Resources Engineering 4 with area of specialization in Geosystem Exploration and Petroleum Geoengineering, School of Engineering and Technology |
| Publisher | Asian Institute of Technology |
| Series Statement | Dissertation ; no. GE-16-01 |
| Abstract | This dissertation is related to shale gas assessment , the Southern Indus Basin, Pakistan. I t is structured in a total of 5 chapters as seen in table of content s . The main work s and outputs of the dissertation are summarized in the following: The Lower Indus Basin of Pakistan is reported to conta in significant recoverable resources of shale oil . Until now no research has been done to estimate the shale gas potential in the southern part of the Lower Indus Basin called the Southern Indus Basin. In this study, an integrated approach was proposed and applied for the Southern Indus Basin, combining source rock screening (SRS), petroleum system modeling (PSM) and volumetric calculations to evaluate potential of shale gas of the Lower Cretaceous Sembar Formation, an organic rich rock interpreted to have sourced main conventional oil and gas accumulations . The study was conducted based on the data taken from the public domain of petroleum industry in Pakistan, including vertical well sections, well logs, seismic sections, regional geological sections, base maps, and geochemical data. The Source Rock Screening (SRS) method was used to assess whether the source rock has adequate organic matter and thermal maturity to generate hydrocarbon. Firstly, the ΔLogR technique was applied based on results of well log a nalysis and petroleum system modeling to find out such key geochemical parameters as Level of Organic Metamorphism (LOM), Effective Heating Time (t eff ), Total Organic Carbon (TOC), g enerated hydrocarbon parameter (S 2 ) and original Hydrogen Index (HI o ) etc. , which would be further used in source rock evaluation based on the Rock Eval ® Pyrolysis data. Petroleum System Modeling (PSM) involved developing a model using Petro Mod 1 - D software to explain the burial history, thermal maturity, comparative retention capacity, remaining kerogen, formation pressure and the remaining volume of the hydrocarbon (oil and gas) in shales of the Sembar Formation. Boundary conditions for the South ern Indus B asin regarding Paleo Water Depth , Sediment Water Interface Temperature and Heat Flow were defined . Three different kinetic schemes for Type II and Type III kerogen as Waples_et_al (1992), Burnham and Sweeny (1989) and Behar_et_al (1997) were sel ected and applied to investigate the suitable kerogen type... |
| Year | 2017 |
| Corresponding Series Added Entry | Asian Institute of Technology. Dissertation ; no. GE-16-01 |
| Type | Dissertation |
| 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 ;Duc Hoang Nguyen ; |
| Scholarship Donor(s) | Higher Education Commission (HEC), Pakistan ;Asian Institute of Technology Fellowship; |
| Degree | Thesis (Ph. D.) - Asian Institute of Technology, 2017 |