Multiple fracturing experiments: propellant and borehole considerations

Conference · Fri Jan 01 04:00:00 EST 1982

OSTI ID:5300239

Cuderman, J F

The technology for multiple fracturing of a wellbore, using progressively burning propellants, is being developed to enhance natural gas recovery. Multiple fracturing appears especially attractive for stimulating naturally fractured reservoirs such as Devonian shales where it is expected to effectively intersect existing fractures and connect them to a wellbore. Previous experiments and modeling efforts defined pressure risetimes required for multiple fracturing as a function of borehole diameter, but identified only a weak dependence on peak pressure attained. Typically, from four to eight equally spaced major fractures occur as a function of pressure risetime and in situ stress orientation. The present experiments address propellant and rock response considerations required to achieve the desired pressure risetimes for reliable multiple fracturing.

• Research Organization: Sandia National Labs., Albuquerque, NM (USA)
• DOE Contract Number: AC04-76DP00789
• OSTI ID: 5300239
• Report Number(s): SAND-81-2224C; CONF-820524-5; ON: DE82008179
• Country of Publication: United States
• Language: English

Related Subjects

03 NATURAL GAS
030900* -- Natural Gas-- Artificial Stimulation
Plowshare-- (-1989)
BITUMINOUS MATERIALS
BLACK SHALES
BOREHOLES
CARBONACEOUS MATERIALS
CAVITIES
CHATTANOOGA FORMATION
COMMINUTION
DATA
DEVONIAN PERIOD
DIMENSIONS
ENERGY SOURCES
EXPERIMENTAL DATA
FOSSIL FUELS
FRACTURING
FUELS
GEOLOGIC AGES
GEOLOGIC DEPOSITS
GEOLOGIC FORMATIONS
INFORMATION
MATERIALS
MINERAL RESOURCES
NATURAL GAS DEPOSITS
NUMERICAL DATA
OIL SHALES
PALEOZOIC ERA
PRESSURE MEASUREMENT
PROPELLANTS
RELIABILITY
RESOURCES
TIME DEPENDENCE