A NEW BOREHOLE GAMMA RAY IMAGING METHOD TO DETERMINE HYDRAULIC FRACTURE USING GD NEUTRON TRACER LOGGING

摘要

Hydraulic fracturing plays an important role in improving productivity of unconventional reservoir. Gaining insight about the hydraulic fracture system, both intersecting and around the borehole, is crucial and can often help determine the economic success of a well and reservoir. At present, isotope tracer logging technology is one of the effective means to evaluate fracturing. The traditional radioactive (R/A) tracer technology can evaluate the fracture height and position, but it involves environmental, safety and regulatory issues. In addition, the non-radioactive tracer technology can locate proppants placement, but geometrical form or orientation of the fracture cannot be obtained.