Formation treatment evaluation

摘要

Measuring a parameter characteristic of a formation in an oil well with a device configured to generate a sensing field within a volume of the formation and cause a flow through the volume in the presence of the sensing field. The device also comprises sensors responsive to changes in the volume, which indicate existent amounts of fluid, such as hydrocarbon and water saturations and irreducible hydrocarbon and water saturations. Measurements may be made before the flow affects the measuring volume and after onset of the flow through the measuring volume.

主权项

1. A tool for evaluating an enhanced oil recovery treatment applied to a subterranean formation, comprising:
a sensing device configured to generate a sensing field within a measuring volume of the formation; a flow generating device configured to cause a flow through the measuring volume; means for applying the enhanced oil recovery treatment to a sealed portion of the subterranean formation; an array of sensors responsive to changes in the sensing field, wherein responses of the array of sensors are indicative of an amount of constituent fluid phases in the measuring volume; and a first pair of packers configured to isolate a zone of the subterranean formation, wherein the array of sensors is integrated into the pair of packers.