Using 3D seismic and attribute analysis to track fluid movement in the subsurface

Conference · Tue Dec 31 04:00:00 EST 1996

OSTI ID:413508

Luheshi, M N; Aluvihare, S G; Evans, J

In 1993, there was a well control incident while drilling a prospect offshore Vietnam. This incident necessitated the implementation of an extensive seismic monitoring program. It became rapidly apparent that conventional high resolution seismic techniques for identifying and monitoring gas in the subsurface were in adequate due to loss of signal power through the system. This problem drove the need for an innovative approach to acquiring a Medium Resolution 3D survey. This had two important characteristics, namely, significantly higher bandwidth than conventional 3D data and also having the penetration necessary in order to image the target reservoir, through a disturbed overburden. This paper describes the technology used in acquiring and processing the data, as this has relevance to use of this type of acquisition for conventional reservoir description purposes. It also describes the attribute analysis developed to compare multiple vintages of seismic in order to be able to track fluid movement in the subsurface. The enhanced resolution achieved has relevance to enabling better reservoir characterization in general. The attribute analysis is an example of how these types of data can then be conditioned in order to allow tracking of fluid in the subsurface, in appropriate situations.

• OSTI ID: 413508
• Report Number(s): CONF-960525--
• Country of Publication: United States
• Language: English

Related Subjects

03 NATURAL GAS
DATA
DATA ACQUISITION
DATA ANALYSIS
GAS SATURATION
GEOLOGIC MODELS
LITHOLOGY
MASS TRANSFER
MONITORING
NATURAL GAS DEPOSITS
RESERVOIR FLUIDS
ROCK MECHANICS
SEISMIC SURVEYS