Multiwell experiment

Conference · Tue Jan 01 00:00:00 EST 1985

OSTI ID:6356194

Sattler, A R; Warpinski, N R; Lorenz, J C; Hart, C M; Branagan, P T

The Multiwell Experiment is a research-oriented field laboratory. Its overall objectives are to characterize lenticular, low-permeability gas reservoirs and to develop technology for their production. This field laboratory has been established at a site in the east-central Piceance basin, Colorado. Here the Mesaverde formation lies at a depth of 4000 to 8250 ft. This interval contains different, distinct reservoir types depending upon their depositional environments. These different zones serve as the focus of the various testing and stimulation programs. Field work began in late 1981 and is scheduled through mid-1988. One key to the Multiwell Experiment is three closely spaced wells. Core, log, well testing, and well-to-well seismic data are providing a far better definition of the geological setting than has been available previously. The closely spaced wells also allow interference and tracer tests to obtain in situ reservoir parameters. The vertical variation of in situ stress throughout the intervals of interest is being measured. A series of stimulation experiments is being conducted in one well and the other two wells are being used as observation wells for improved fracture diagnostics and well testing. Another key to achieving the Multiwell Experiment objectives is the synergism resulting from a broad spectrum of activities: geophysical surveys, sedimentological studies, core and log analyses, well testing, in situ stress determination, stimulation, fracture diagnostics, and reservoir analyses. The results from the various activities will define the reservoir and the hydraulic fracture. These, in turn, define the net pay stimulated: the intersection of a hydraulic fracture of known geometry with a reservoir of known morphology and properties. Accomplishments of the past year are listed. 4 refs.

• Research Organization: Sandia National Labs., Albuquerque, NM (USA)
• DOE Contract Number: AC04-76DP00789
• OSTI ID: 6356194
• Report Number(s): SAND-85-2396C; CONF-8511111-4; ON: DE86003240
• Resource Relation: Conference: Unconventional gas recovery contractors' meeting, Morgantown, WV, USA, 18 Nov 1985
• Country of Publication: United States
• Language: English

Related Subjects

03 NATURAL GAS
NATURAL GAS DEPOSITS
EVALUATION
EXPLOITATION
FRACTURING
NATURAL GAS WELLS
TESTING
WELL LOGGING
PICEANCE CREEK BASIN
TECTONICS
SANDSTONES
PERMEABILITY
DRILL CORES
FRACTURE MECHANICS
GEOPHYSICAL SURVEYS
HYDRAULIC FRACTURING
RESEARCH PROGRAMS
SEISMIC SURVEYS
STRESSES
WELL SPACING
WELL STIMULATION
COMMINUTION
GEOLOGIC DEPOSITS
MECHANICS
MINERAL RESOURCES
RESOURCES
ROCKS
SEDIMENTARY ROCKS
STIMULATION
SURVEYS
WELLS
030900* - Natural Gas- Artificial Stimulation
Plowshare- (-1989)
030200 - Natural Gas- Reserves
Geology
& Exploration