Patterson + Sheridan, LLP
Identification of proppant in subterranean fracture zones using a ratio of capture to inelastic gamma rays
Methods are provided for determining the location and height of a fracture in a subterranean formation using pulsed neutron capture (PNC) logging tools. The methods include obtaining a pre-fracture data set, hydraulically fracturing the formation with a slurry that includes a liquid and a proppant in which at least a portion of the proppant is tagged with a thermal neutron absorbing material, obtaining a post-fracture data set, comparing the pre-fracture data set and the post-fracture data set to determine the location of the proppant, and correlating the location of the proppant to a depth measurement of the borehole to determine the location and height of the propped fracture.
CARBO Ceramics Inc.
E E
E21B E21B
inventional inventional
Robert Harry D. Xiaogang Qianmei (Jeremy)
Duenckel Smith, Jr. Han Zhang