README.md

pyzgy

Convenience wrapper around Schlumberger's OpenZGY Python package which enables reading of ZGY files with a syntax familiar to users of segyio.

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Installation

Requires openzgy package from Schlumberger, which is (for now) bundled here under Apache v2.0 license

• Wheels from PyPI: pip install pyzgy
• Source from Github: git clone https://github.com/equinor/pyzgy.git

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Usage

Use segyio-like interface to read ZGY files

import pyzgy
with pyzgy.open("in.zgy")) as zgyfile:
    il_slice = zgyfile.iline[zgyfile.ilines[LINE_IDX]]
    xl_slice = zgyfile.xline[LINE_NUMBER]
    zslice = zgyfile.depth_slice[SLICE_IDX]
    trace = zgyfile.trace[TRACE_IDX]
    trace_header = zgyfile.header[TRACE_IDX]
    text_file_header = zgyfile.text[0]

Read a ZGY file with underlying functions

from pyzgy.accessors import SeismicReader
with SeismicReader("in.zgy") as reader:
    inline_slice = reader.read_inline_number(LINE_NUMBER)
    crossline_slice = reader.read_crossline(LINE_IDX)
    z_slice = reader.read_zslice_coord(SLICE_COORD)
    sub_vol = reader.read_subvolume(min_il=min_il, max_il=max_il,
                                    min_xl=min_xl, max_xl=max_xl,
                                    min_z=min_z, max_z=max_z)