Method for monitoring the hydraulic fracturing of a subsurface formation
This patent describes a method for monitoring the hydraulic fracturing of a subsurface formation of interest. It comprises: logging a subsurface formation through a measurement of delayed gamma rays from the neutron activation of a characteristic element of the formation, injecting a fracturing fluid into the formation to hydraulically create a fracture within the formation, injecting a proppant into the fracture containing the element which emits delayed gamma rays in response to neutron activation, logging the proppant containing the fractured formation through a measurement of delayed gamma rays from the neutron activation of the proppant containing fractured formation, and identifying the extent of proppant deposition within the fractured formation from the difference in the delayed gamma ray measurements of the formation before and after the proppant injection.
- Assignee:
- Mobil Oil Corp., New York, NY (USA)
- Patent Number(s):
- US 4926940; A
- Application Number:
- PPN: US 7-240308A
- OSTI ID:
- 6744584
- Resource Relation:
- Patent File Date: 6 Sep 1988
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
03 NATURAL GAS
NATURAL GAS WELLS
HYDRAULIC FRACTURING
OIL WELLS
ENHANCED RECOVERY
GAMMA DETECTION
MONITORING
PROPPING AGENTS
WELL STIMULATION
COMMINUTION
DETECTION
FRACTURING
RADIATION DETECTION
RECOVERY
STIMULATION
WELLS
020300* - Petroleum- Drilling & Production
030300 - Natural Gas- Drilling
Production
& Processing