Study of fracture pressurization as a result of explosive detonation
This paper describes a number of model tests conducted in plexiglas models to investigate the phenomenon of fracture pressurization. The models were examined with high speed photography while being subjected to explosive loading. At the same time pressure transducers were used to record the pressure in the borehole as a function of time and also along the path of the propagating fracture to measure the pressure at various locations along the fracture as a function of time. Both propellants and explosives were used to charge the borehole. Air as well as fluid filled boreholes were needed to provide a variety of pressure rise rates. On some tests eddy current displacement gauges measured crack opening displacements as a function of time. As a final check high speed photographs taken during the event were used to visually ascertain the location of the fracture at any given time. 6 references, 10 figures.
- Research Organization:
- Maryland Univ., College Park (USA). Dept. of Mechanical Engineering; Los Alamos National Laboratory (LANL), Los Alamos, NM (United States)
- DOE Contract Number:
- W-7405-ENG-36
- OSTI ID:
- 6666149
- Report Number(s):
- LA-UR-84-2437; CONF-840633-16; ON: DE84015541
- Resource Relation:
- Conference: 25. US symposium on rock mechanics, Evanston, IL, USA, 25 Jun 1984; Other Information: Portions are illegible in microfiche products
- Country of Publication:
- United States
- Language:
- English
Similar Records
Model investigation of borehole pressure distribution
Model studies of well stimulation using propellant charges
Related Subjects
03 NATURAL GAS
PLEXIGLAS
CRACK PROPAGATION
EXPLOSIVE FRACTURING
BOREHOLES
CHEMICAL EXPLOSIVES
DETONATIONS
EXPERIMENTAL DATA
FRACTURES
PHOTOGRAPHY
PRESSURE MEASUREMENT
PRESSURIZING
PROPELLANTS
CAVITIES
COMMINUTION
DATA
ESTERS
EXPLOSIVES
FAILURES
FRACTURING
INFORMATION
MATERIALS
NUMERICAL DATA
ORGANIC COMPOUNDS
ORGANIC POLYMERS
PETROCHEMICALS
PETROLEUM PRODUCTS
PLASTICS
POLYACRYLATES
POLYMERS
POLYVINYLS
SYNTHETIC MATERIALS
580300* - Mineralogy
Petrology
& Rock Mechanics- (-1989)
030900 - Natural Gas- Artificial Stimulation
Plowshare- (-1989)