| Abstract |
Modified Isochronal Test (MIT), commonly used in oil and gas well testing, was employed in highly two' phase (H>2400 kJ/kg) and dry geothermal wells of the Southern Negros Geothermal Production Field (SNGPF/,V alencia,P hilippinesf,o fesf its applicability as an alternative means of obtaining the bore output curues or well deliverability. Iesf resu/fs were in good agreement with the conventional back pressure method called Medium Term Discharge MfD) fesf. ln both testing methods, well flows were measured using the James Lrp Pressure Method. Test duration is the key difference between the two techniques. MTD method normally requires 30-60 days to conduct while the MIT technique can accomplish the same obiective within a week, thus, allowing immediate utilization of the well for revenue purposes. ln SNGPF, deliverability or bore output curve of well NJ-6D was obtained in seven days using the MIT method,s ignificantlyr educingf esf durationb y -B0o/o.I his translatesf o huge cosf savingso f about US$ 190,000. For dry well BL-3D, the deliverability curue was obtained within five days. A similar application was a/so conducted on two dry wells in the Kamojang field in West Java, lndonesia with affirmative results. |