Method for fast slant stack of seismic data

Patent · Tue Oct 18 00:00:00 EDT 1988

OSTI ID:6544936

Howard, M S

This patent desribes a method for fast slant stack of seismic data, comprising the steps of: inputting selected seismic data in the form of a plurality of spatially related traces having known offset chi and time t; defining a sampling grid of slope rho for the range O to t/ chi in terms of rho/sub eta/ = (1/2)/sup eta/ t/ chi wherein slope rho is a variable value that changes with the value of eta through a progression of eta data iterations; evaluating first slant stacks of successive pairs of 2/sup 1/ traces through time t for slopes O and 1/2 /chi to establish basic interpolation weights of 1 and 1/2:1/2 relative to the sampling grid; merging data from adjoining groups of 2/sup 1/ slant stack traces into groups of 2/sup 2/ slant stack traces having a sampling grid that is summed from the basic interpolation weights of 1 and 1/2:1/2; repeating the merging step for successive adjoining groups of 2/sup 2/ through 2/sup eta/ slant stack traces through a total n interactions whereupon sufficient refinement of the sampling grid is attained; and outputting a rho - tau display of the selected seismic data.

• Assignee: Conoco Inc., Ponca City, OK
• Patent Number(s): US 4779238
• OSTI ID: 6544936
• 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
99 GENERAL AND MISCELLANEOUS
990220 -- Computers
Computerized Models
& Computer Programs-- (1987-1989)
COMMUNICATIONS
COMPUTERS
DATA PROCESSING
DATA TRANSMISSION
EXPLORATION
GEOLOGIC DEPOSITS
GEOPHYSICAL SURVEYS
INTERPOLATION
MINERAL RESOURCES
NATURAL GAS DEPOSITS
NUMERICAL SOLUTION
PETROLEUM DEPOSITS
PROCESSING
RESOURCES
SEISMIC SURVEYS
SURVEYS