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The AAPG/Datapages Combined Publications Database
AAPG Bulletin
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Methods of surveying to determine the amount and direction of deviation from the vertical have been adopted in the Gulf Coast district during the last 18 months.
The amount of deviation is determined by using acid bottles or clinometers; of direction, by using a clinometer in combination with a magnetic compass, or by using the oriented drill-pipe method. The results of these last two methods are in approximate agreement.
The productive zone on the flanks of salt domes is so narrow that the position of the bottom of all wells should be known. Many operators survey all wells and correct those which are exceedingly crooked.
Well surveys aid the geologist to interpret correctly the complicated geologic structure, and to make new locations more accurately.
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