Multiple fracturing experiments: propellant and borehole considerations

Conference · Fri Jan 01 00:00:00 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
• Resource Relation: Conference: Unconventional gas recovery symposium, Pittsburg, PA, USA, 16 May 1982; Other Information: Portions of document are illegible
• Country of Publication: United States
• Language: English

Related Subjects

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