New techniques for acquisition of high-quality seismic data in southern Sacramento basin, California

Conference · Fri Jan 01 04:00:00 EST 1988

OSTI ID:6921082

Bertagne, A J; Vuillermoz, C; Delzer, R

The southern Sacramento basin is typified by relatively flat topography, numerous navigation channels, and extensive peat deposits. Seismic data acquired in the area have generally been poor, due probably to attenuation of seismic energy by the peat and static problems caused by lateral velocity variations within the peat. In an attempt to obtain higher quality data, a test line was shot using a new field approach. The peat was penetrated using shothole drills and a seismic source/receiver assembly was placed in each hole beneath the peat layer. The source consisted of dynamite and the receiver of a single low-cost disposable hydrophone. Thus, shooting and recording were conducted beneath the problematic peat layer. The line was acquired using an end-on spread, with energy being recorded at a given location until the location became a shotpoint and the hydrophone was destroyed. A geophone was planted at the surface at each location, thereby allowing a conventional line to be simultaneously recorded.

• OSTI ID: 6921082
• Report Number(s): CONF-880301-
• Country of Publication: United States
• Language: English

Related Subjects

02 PETROLEUM
020200* -- Petroleum-- Reserves
Geology
& Exploration
03 NATURAL GAS
030200 -- Natural Gas-- Reserves
Geology
& Exploration
ATTENUATION
CALIFORNIA
CONTROL
DATA ACQUISITION SYSTEMS
ENERGY SOURCES
EXPLORATION
FEDERAL REGION IX
FOSSIL FUELS
FUELS
GEOLOGIC DEPOSITS
GEOLOGIC STRUCTURES
GEOPHYSICAL SURVEYS
GEOPHYSICS
MAPPING
MEASURING INSTRUMENTS
MINERAL RESOURCES
NATURAL GAS DEPOSITS
NORTH AMERICA
ORGANIC MATTER
PEAT
PETROLEUM DEPOSITS
QUALITY CONTROL
RESOURCES
SEDIMENTARY BASINS
SEISMIC ARRAYS
SEISMIC DETECTORS
SEISMIC SURVEYS
SEISMIC WAVES
SURVEYS
USA