Enhancing hydrocarbon production from gas-condensate reservoirs via water injection | |
| Author | Usa Chankhiao |
| Call Number | AIT Thesis no.OTM-10-03 |
| Subject(s) | Gas condensate reservoirs Gas reservoirs |
| Note | A thesis submitted in partial fulfillment of the requirements for the degree of Master of Engineering in Offshore Technology and Management, School of Engineering and Technology |
| Publisher | Asian Institute of Technology |
| Series Statement | Thesis ; no. OTM-10-03 |
| Abstract | Reservoir gas can condense to become a liquid when reservoir pressure falls below dew point pressure. This liquid will remain in the formation, and then reduce the productivity and deliverability of wells due to blockage problem. It is an important cause of low condensate recovery. An alternative approach of improving the recovery is water injection. This technique allows enhancing production by keeping reservoir pressure above the dew point. This paper investigates the feasibility of water injection in a gas-condensate reservoir. A compositional reservoir simulator was used for the reservoir simulation. The optimal hydrocarbon production and effect of aquifer strength, permeability and dipping of reservoir structure, with different water injection rates were studied. The simulation results show that water injection does effectively maintain the reservoir pressure above the dew point because of preventing condensate dropout. However, it has some restriction of over injection, resulting in low gas recovery. Furthermore, the results were achieved by increasing hydrocarbon recovery at the increasing water injection rates especially, for the reservoir without aquifer system and for the reservoir that has more dip. However, it does not have a different hydrocarbon production for the different permeability. In economic term water injection project should be invested because of high rate of return from increasing hydrocarbon recovery. Nevertheless, limitations of costs and product prices are the important items that need to be considered because of sensitivity effect. |
| Year | 2010 |
| Corresponding Series Added Entry | Asian Institute of Technology. Thesis ; no. OTM-10-03 |
| Type | Thesis |
| School | School of Engineering and Technology (SET) |
| Department | Department of Civil and Infrastucture Engineering (DCIE) |
| Academic Program/FoS | Offshore Technology and Management (OTM) |
| Chairperson(s) | Chiu, Gregory L.F. |
| Examination Committee(s) | Suwat Athichanagorn;Thitisak Boonpramote |
| Scholarship Donor(s) | RTG Fellowship |
| Degree | Thesis (M.Eng.) - Asian Institute of Technology, 2010 |