The Value of Permanent Downhole Pressure Surveillance in the Amherstia/Parang Field, Offshore Trinidad

摘要

The following are the benefits of having the PDHG data in the Amherstia/Parang Field:rn1. The cost, risk and operational disruption associated with obtaining downhole pressures by wireline are removed and continuous, high quality bottom hole pressure data is obtained.rn2. Reservoir drive mechanism can be inferred by comparison of volumes calculated by material balance and from seismic mapping. This is important to distinguish pressure support from aquifer or fault seepage.rn3. Pressure transient analysis can give a third means of calculating gas in place and can give direct evidence of water movement by changes in boundaries with time.rn4. PDHG data gives a quick and efficient means of monitoring how well performance changes with time.rn5. The PDHG data has been fundamental in generating a reliable field deliverability forecast for the Amherstia/Parang field.