Overview

 

Flow set-up

The HotShot user interface is both powerful and easy to use.

Processing sequences and parameters are defined in free-format 'keyword=value(s)' files. This design makes such files easy to read - for example

All 150+ routines are fully re-entrant (i.e. can be invoked any number of times within a flow), and this allows processing sequences to be highly complex - for example

Processing can be done in batch mode, via macros, or interactively.

The batch mode option allows processing flows to be defined in parameter files using any text-editor. These flows can then be queued-up and run in sequence.

The macro option accesses a pre-defined (readily expandable) library of 'replaceable parameter' flows. As such, it provides a convenient way to run standard tests, and to standardise the processing for an entire project.

The interactive option lets you type the names of the routines you want to call. All their keywords and default values are then generated automatically. It's just a matter of over-typing any values you want to alter in an interactive manner, and then pressing the 'execute' key.

 

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Input-Output

 

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Limits

HotShot is designed to run on any PC under W95 or later.

Most of the processing limits are variable, memory being split according to the flow's complexity. A few limits are fixed. Here are some examples:

  • Shots per line

Marine: no limit. Land: 10000

  • Channels per shot

Marine: no limit. Land: 2048

  • Sort keys

Any number of header names

  • Sort fold

No limit

  • Trace length

No limit

  • Sampling interval

Any (floating-point) value

  • v-t pairs per velocity function

40

  • Velocity functions per line

No limit

  • Decon operators per function

5

  • Decon functions per line

No limit

  • Filters per function

10

  • Filter functions per line

No limit

  • Processing steps per flow

200

Traces are processed and stored as 32-bit f.p.
Trace headers are processed and stored as 64-bit f.p. (which gives 15 digit accuracy)

Seismic files may, in practice, be of any size (there's no 2 Gbyte limit).

 

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Graphics

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