| Author | Thanakorn Rattanawai |
| Call Number | AIT Thesis no.GE-09-11 |
| Subject(s) | Gas reservoirs--Thailand, Gulf of
|
| Note | A thesis submitted in partial fulfillment of the requirements for the degree of Master of Engineering in Geosystem Exploration and Petroleum Geoengineering, School of Engineering and Technology |
| Publisher | Asian Institute of Technology |
| Series Statement | Thesis ; no. GE-09-11 |
| Abstract | Based on drive mechanism, there are two types of gas reservoir: depletion-drive and water-drive. Depletion-drive gas reservoirs illustrate recovery about 80- 90% whereas recovery factor from water-drive reservoirs varies between 30-70% depending on aquifer strength and well location. As water encroach gas reservoirs, capillary effects mainly cause water to move erratically where the water trail forms the encirclement around some bubble of gas. Such gas in the enclosure becomes unrecoverable. Basically, a gas reservoir derives producing mechanism from the expansion of gas itself. When water influx occurs, gas expansion is restricted because of aquifer pressure. In general, the stronger the aquifer strength, the more the amount of residual gas is left in place. This study focuses on enhancing the recovery of gas in a water-drive gas reservoir. The methods of improving gas recovery for water-drive gas reservoir are I) accelerated gas production and 2) planned water production. A reservoir model was constructed to represent typical reservoir in the Pattani Basin, Gulf of Thailand. Reservoir simulation was performed by using Eclipse 100 software in order to determine the best production strategy. For accelerated gas production, the effect of aquifer strength, effect of well location, and effect of k,'/kh ratio and dip angle of the reservoir are considered. For planned water production technique, water production rate in a well drilled at the gas/water contact is adjusted until obtaining optimal gas recovery |
| Year | 2010 |
| Corresponding Series Added Entry | Asian Institute of Technology. Thesis ; no. GE-09-11 |
| 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;Suwat Athichanagorn; |
| Examination Committee(s) | Noppadol Phien-wej; |
| Scholarship Donor(s) | RTG Fellowship; |
| Degree | Thesis (M.Eng.) - Asian Institute of Technology, 2009 |