QUALITY METRICS FOR TIGHT OIL RESERVOIRS

摘要

Techniques for calculating metrics for reservoir quality based on light oil and total organic carbon in tight oil reservoirs are described. The techniques include calculating quantities of light oil and total organic carbon from logging data and generating therefrom a continuous log for reservoir quality metric. Additionally new reservoir quality indices are presented that more accurately predict reservoir quality in tight oil plays.

主权项

1. A method of calculating values indicating quality of a hydrocarbon-bearing reservoir formation penetrated by a borehole, the method comprising:
receiving reservoir log measurement data acquired from logging measurements made in situ at a plurality of depths within the borehole of the formation; for each of the plurality of depths, calculating a light hydrocarbon value based at least in part on said reservoir log measurement data at that depth, the light hydrocarbon value indicating quantity of light hydrocarbon at that depth; and for each of the plurality of depths, calculating a quantitative reservoir quality value indicating potential for producing hydrocarbons from the formation at that depth, wherein each of said calculated reservoir quality values is based at least in part on said calculated light hydrocarbon value at that depth.