Late diagenetic indicators of buried oil and gas

Donovan, Terrence J.; Dalziel, Mary C.

doi:10.3133/ofr77817

Cited by 26 publications

(13 citation statements)

References 79 publications

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“…Both observations strongly suggest a cause and effect relationship. Donovan and coworkers (Donovan et al, 1974;Donovan and Dalziel, 1977;and Henry and Donovan, 1978) found the same patterns over other oil fields in the southern Anadarko Basin (Fox-Graham, Wheeler, and Velma fields) and over other oil fields in New Mexico, Texas, and California. In all these publications, "oxidized hydrocarbons" were called upon to provide the CO2 with isotopically light carbon found in the carbonate cements.…”

Section: Conventional Hc-deposit Trap Sealsmentioning

confidence: 74%

Implications of hydrocarbons in carbonaceous metamorphic and hydrothermal ore-deposit rocks as related to the hydrolytic disproportionation of organic matter

Price¹,

DeWitt²,

Desborough³

1998

Open-File Report

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Section: Conventional Hc-deposit Trap Sealsmentioning

confidence: 74%

Implications of hydrocarbons in carbonaceous metamorphic and hydrothermal ore-deposit rocks as related to the hydrolytic disproportionation of organic matter

Price¹,

DeWitt²,

Desborough³

1998

Open-File Report

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“…. Kilomerer.s Although we have no detailed documentation, we suggest (Donovan and Dalziel, 1977) Seven major soil associations have been mapped in the Garza region ( fig. 18).…”

Section: The Test Sitesmentioning

confidence: 87%

Late diagenetic indicators of buried oil and gas: II, Direct detection experiment at Cement and Garza oil fields, Oklahoma and Texas, using enhanced LANDSAT I and II images

Donovan

Termain²,

Henry³

1979

Open-File Report

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The Cement oil field, Oklahoma, was a test site for an experiment designed to evaluate LANDSAT's capability to detect an alteration zone in surface rocks caused by hydrocarbon microseepage. Loss of iron and impregnation of sandstone by carbonate cements and replacement of gypsum by calcite are the major alteration phenomena at Cement. The bedrock alterations are partially masked by unaltered overlying beds, thick soils, and dense natural and cultivated vegetation. Interpreters biased by detailed ground truth were able to map the alteration zone subjectively using a magnified, filtered, and sinusoidally stretched LANDSAT composite image; other interpreters, unbiased by ground truth data, could not duplicate that interpretation. Similar techniques were applied at a secondary test site (Garza oil field, Texas), where similar alterations in surface rocks occur. Enhanced LANDSAT images resolved the alteration zone to a biased interpreter and some individual altered outcrops could be mapped using higher resolution SKYLAB color and conventional black and white aerial photographs suggesting repeat experiments with LANDSAT C and D.

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“…Carbon dioxide concentrations in groundwater form carbonic acid that can react with clay minerals (calcium silicates, for example) as shown in Figure 6 to create secondary calcium carbonate mineralization and silicification (SO2) (Kartsev et al, 1959, 294-295;Donovan et al, 1974;Donovan and Dalziel, 1977). This can result in rendering the near-surface materials more dense and resistant to erosion.…”

Section: Effects Of Carbon Dioxidementioning

confidence: 95%

Tests of Australian aerial radiometric data for use in petroleum reconnaissance

Saunders¹,

Branch²,

Thompson³

1994

GEOPHYSICS

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Recon Exploration Pty. Ltd. has successfully completed initial testing of a new method for processing and interpretation of AGSO’s (Australian Geological Survey Organization, formerly Bureau of Mineral Resources) aerial gamma‐ray spectrometer data for petroleum exploration in the Canning Basin, Western Australia and the Otway Basin, Victoria. Count‐rate data for potassium and uranium were normalized to the thorium count rate for each sample to suppress unwanted effects of variations in surface lithology or soil type, soil moisture, vegetation cover, and counting geometry. The Canning Basin test area included five producing oil fields. All except one clearly exhibit significant and characteristic radiometric anomalies which include negative normalized potassium and more positive normalized uranium values. The Otway Basin test areas included PPL-1 commercial gas production which is associated with a group of significant radiometric anomalies similar to those in the Canning Basin. These results are similar to extensive ongoing tests in the U.S. and are explained in terms of well‐understood geological, geochemical, and geophysical models. Based on 69 wells in the three test areas, it is estimated that the chance of encountering hydrocarbons (economic production or shows) in wells within the radiometrically favorable zones is about 2.6 times greater than outside the favorable areas.

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Late diagenetic indicators of buried oil and gas

Cited by 26 publications

References 79 publications

Implications of hydrocarbons in carbonaceous metamorphic and hydrothermal ore-deposit rocks as related to the hydrolytic disproportionation of organic matter

Implications of hydrocarbons in carbonaceous metamorphic and hydrothermal ore-deposit rocks as related to the hydrolytic disproportionation of organic matter

Late diagenetic indicators of buried oil and gas: II, Direct detection experiment at Cement and Garza oil fields, Oklahoma and Texas, using enhanced LANDSAT I and II images

Tests of Australian aerial radiometric data for use in petroleum reconnaissance

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