STUDY ON INCREASING PRODUCTION AND POTENTIAL OF KHORAT SAND GAS USING FRACTURING AND COMPUTER SIMULATION

Phanuphong  Gaewmood; Kriangkrai  Trisarn

Authors

Phanuphong Gaewmood School of Geotechnology, Institute of Engineering, Suranaree University of Technology Isan, Nakhon Ratchasiam, 30000, Thailand.
Kriangkrai Trisarn School of Geotechnology, Institute of Engineering, Suranaree University of Technology Isan, Nakhon Ratchasiam, 30000, Thailand.

Keywords:

Gas fields reserve, hydraulic fracture, production efficiency, reservoir simulation, petroleum economics

Abstract

The objectives of this research are to 1) evaluate the potential and risks in the petroleum reserve of a gas field using SPE/AAPG/WPG basis and Monte Carlo Method, 2) study of hydraulic fracturing (HF)and simulation model using computer program, evaluate production efficiency 3) study the development of gas reservoir in tight sand and compare the gas flow rate before and after hydraulic fracturing by using PKN model, and 4) evaluate risks in investment for hydraulic fracturing method and petroleum production using a computer program. The study is based on 6 US$/MMBTU of natural gas prices. The assessment indicated the most likely probability to find the small gas field with the reserve of 150 Bcf (billion cu.ft.). The Khorat sand gas fields, will need to be fracked with HF when the IRR is less than 10%. In the NE Thailand and Thai III, before HF the Khorat sand gas field starts production of 11 MMSCF/day and lasts for the first year then declines to end at 5.2 MMSCF/day in the 20th year with the total production of 55.82 MMMSCF, IRR of 4.11%. After 1500 barrels of fluid HF, the gas field starts production of 25 MMSCF/day and lasts to 1 year then declines to end at 5.5 MMSCF/day with the recovery of 93.14 MMMSCF, IRR of 24.23%.

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