Pressure-Pressure Deconvolution Analysis of Multiwell Interference and Interval Pressure Transient Tests

摘要

Following the introduction of pressure-rate (p-r) deconvolution techniques in 1960s, they have been investigated continually during the last two decades. Now most p-r deconvolution techniques are stable and have been used increasingly for analysis of pressure transient tests. A successful p-r deconvolution can transform a multirate pressure transient response to an equivalent constant-rate drawdown response for the entire test duration. It can help identify/confirm interpreted reservoir models and eliminates multirate superposition effects. However, the flow rate is usually not directly and continuously measured in conventional pressure-transient well tests, although it is measured reasonably accurately during interval pressure transient tests (IPTT) conducted by wireline formation testers (WFTs). Nevertheless, large uncertainties or errors associated with inaccurate rate data usually hinder the successful use ofp-r deconvolution methods