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The AAPG/Datapages Combined Publications Database
AAPG Bulletin
Abstract
Volume:
Issue:
First Page:
Last Page:
Title: Geological
Data
Obtained from Well Logs: ABSTRACT
Author(s):
Article Type:
Abstract:
Integration of electronic machines for the efficient recording, computing, and plotting of exploration data
has reduced the time, cost, and number of errors inherent in the manipulation of
data
.
The data
processing system discussed encompasses all the phases of
data
recording, computing, and plotting. However,
data
recording still limits the machine approach because most manual methods are too slow and prone to error.
Jersey Production Research Company has developed and put into operation a digitizer, which is a desk-sized instrument designed to transfer basic stratigraphic data
and their respective depths from well log overlays to punch cards. This unit has been incorporated into the machine system for processing
geological
data
. The use of the digitizer reduces by one-half the time necessary for
data
tabulation, and increases the accuracy and efficiency of machine processing. The digitizer allows for the preservation of vertical positions (depths) for a maximum of 40 variables on one overlay. These variables, including lithologic features, oil shows, and (or) fluid contents, porosity ranges, and formation tops, are computed and plotted prior to the preparation of stratigraphic maps.
A specially designed computer
program provides the necessary link between the digitizer and the IBM 650; it processes the
data
and computes thicknesses, subsea depths, ratios, and percentages in a form suitable for machine plotting of exploration maps. For subsequent studies involving correlation changes, the basic
geological
data
, which are stored on cards, can be retrieved and reworked without retabulation.
The final step in the machine system is cross-sectioning, plotting, and contouring
the computed
data
for visual presentation.
Savings in time and cost can not be estimated accurately, but they are more than sufficient to make geological
data
processing practical. The chief benefit of machine processing of exploration
data
is that it provides the geologist with
data
quality and several courses of investigation previously considered infeasible.
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