Recent Advances in Production Performance Analyses of Unconventional Reservoirs

Poe, Bobby D.¹
(1)DCS - HQ, Schlumberger, Houston, TX.

This technical presentation consists of a summary of the more recent advances in well production performance analyses that are used to characterize the formation properties and well completion effectiveness in unconventional reservoirs. Among the various topics to be presented at the workshop are (a) the state-of-the-art transient decline curve analyses that have been most recently developed to enable formation and well completion effectiveness characterization using only very early transient flow production data (prior to the onset of drainage area boundary effects) and (b) the extension of the Selective Inflow Performance (SIP) analysis for multilayer commingled reservoir systems using multi-rate production log measurements. Other industry-accepted well performance evaluation techniques for unconventional reservoirs such as rate-transient decline curve analyses and diagnostic techniques will also be discussed in the workshop presentation.

The formation and well completion effectiveness evaluation techniques presented in the workshop will include the practical and reliable analyses that have been found to provide quantitative estimates of the effective permeability, fracture half-length, fracture conductivity, skin effect, and reservoir effective drainage area in single or multilayer unconventional reservoirs. Field examples will be presented to illustrate to application of each of these interpretation techniques for the characterization of unconventional reservoirs.

AAPG Search and Discovery Article #90135©2011 AAPG International Conference and Exhibition, Milan, Italy, 23-26 October 2011.