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Title: First arrival time surface, estimation of statics

The problem of obtaining surface consistent statics using first arrival refractions has several phases. To begin with, the first arrivals must be picked in some reasonable, consistent fashion. Next, appropriate techniques must be used to solve for surface-consistent statics. Finally, the interpreter must be provided with an evaluation of the quality of the estimated statics. First arrival refractions are part of reflection seismic data. Early seismic reflection work used first arrival refractions for weathering static corrections. With the advent of the common midpoint (CMP) method, first arrivals lost their predominance in statics to correlation techniques within CMP gathers. However, the increasing use of a large number of receivers and a small group interval has made first arrival statics more reliable. In addition, recent work has helped to revitalize interest in the use of first arrival refractions for surface-consistent static corrections.
Authors:
;
Publication Date:
OSTI Identifier:
7152900
Resource Type:
Journal Article
Resource Relation:
Journal Name: Oil Gas J.; (United States); Journal Volume: 81:36
Research Org:
Seismograph Service Corp., Tulsa, OK
Country of Publication:
United States
Language:
English
Subject:
02 PETROLEUM; 03 NATURAL GAS; NATURAL GAS DEPOSITS; SEISMIC SURVEYS; PETROLEUM DEPOSITS; SEISMIC WAVES; REFLECTION; REFRACTION; CALCULATION METHODS; CORRELATIONS; PHASE VELOCITY; TIME DEPENDENCE; WEATHERING; GEOLOGIC DEPOSITS; GEOPHYSICAL SURVEYS; MINERAL RESOURCES; RESOURCES; SURVEYS; VELOCITY 020200* -- Petroleum-- Reserves, Geology, & Exploration; 030200 -- Natural Gas-- Reserves, Geology, & Exploration