SEEPAGE-INDUCED ANOMALIES, 'FALSE' ANOMALIES, AND IMPLICATIONS FOR ELECTRICAL PROSPECTING.

Dorothy Z. Oehler, Ben K Sternberg

Research output: Contribution to journalArticle

27 Citations (Scopus)

Abstract

Two detailed case studies have been made of shallow electrical anomalies. In one study (Ashland field, Oklahoma), the anomalies are shown to be related to vertical seepage from a hydrocarbon reservoir; in the other (Salt Draw prospect, Texas), the anomalies are shown to be 'false' anomalies and unrelated to any deeper hydrocarbons. The results also suggest that seepage-induced pyrite and marcasite are likely to form only over hydrocarbon reservoirs where at least two geologic conditions are met: some hydrocarbons from the reservoir can seep to the near surface, and the near-surface section contains porous, iron-bearing host rocks. Study conclusions are combined with those drawn from 40 other electrical surveys to develop a strategy for using shallow-investigation electrical techniques in the search for petroleum which is discussed in the paper. Refs.

Original languageEnglish (US)
Pages (from-to)1121-1145
Number of pages25
JournalAAPG Bulletin
Volume68
Issue number9
StatePublished - Sep 1984
Externally publishedYes

Fingerprint

Seepage
Hydrocarbons
seepage
anomaly
hydrocarbon reservoir
Bearings (structural)
hydrocarbon
marcasite
Pyrites
Petroleum
host rock
pyrite
Iron
Crude oil
Salts
Rocks
petroleum
salt
iron

ASJC Scopus subject areas

  • Earth and Planetary Sciences (miscellaneous)
  • Energy Engineering and Power Technology
  • Fuel Technology

Cite this

SEEPAGE-INDUCED ANOMALIES, 'FALSE' ANOMALIES, AND IMPLICATIONS FOR ELECTRICAL PROSPECTING. / Oehler, Dorothy Z.; Sternberg, Ben K.

In: AAPG Bulletin, Vol. 68, No. 9, 09.1984, p. 1121-1145.

Research output: Contribution to journalArticle

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