Method for monitoring the hydraulic fracturing of a subsurface f

Details Method for monitoring the hydraulic fracturing of a subsurface f Method for monitoring the hydraulic fracturing of a subsurface f

1988-09-06

1990-05-22

Novosad, Stephen J.

Wells

Processes

Nuclear energy or radioactivity for treating

73152, 166250, 166280, E21B 43267, E21B 4900

Patent

active

049269402

ABSTRACT:
A method for monitoring the hydraulic fracturing of a subsurface formation. The formation is fractured with a fracturing fluid or a proppant containing a characteristic element of the formation which emits delayed gamma rays when activated with neutrons. The formation is activation logged before and after such fracturing. The difference in the logs is a measure of the extent of travel of the fracturing fluid or extent of deposition of the proppant within the fractured formation.

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