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Eldorado Oil and Gas Field

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Contents

Introduction

Scope of report

Field work

Acknowledgments

Geography

Culture

Physiography

Drainage

Water supply

History

Stratigraphy

General features

Unexposed rocks

Pre-Cambrian rocks

Cambrian and Ordovician rocks

Mississippian rocks

General consideration

Stapleton oil zone

Pennsylvanian rocks

Cherokee shale and Marmaton formation

Kansas City formation

Lansing formation

Douglas formation

Shawnee formation

Wabaunsee formation

Permian rocks

Council Grove formation

Chase formation

Exposed rocks

Introductory statement

Permian rocks

Chase formation

Florence flint member

Fort Riley limestone member

Doyle shale member

General consideration

Lower shale bed

Towanda limestone bed

Upper shale bed

Winfield limestone

Marion formation

General consideration

Enterprise (?) shale member

Herington (?) limestone member

Pearl (?) shale member

Quaternary deposits

Structure

Regional structure

Relationship of surface structure to oil and gas accumulation

Structure of Eldorado district

Structure of surface rocks

Eldorado anticline and Walnut syncline

Shumway dome

Boyer dome

Oil Hill dome

Chesney dome

Wilson dome

Robinson dome

Chelsea dome

Hammond syncline

Bishop syncline

Fowler syncline

Bancroft syncline

Hegberg syncline

Theta syncline

Dunkle syncline

Ramsey syncline

Lincoln syncline

Structure of underground rocks

Oil and Gas Sands

General statement

Shallow oil sands

General consideration

550-foot sand

Stray sand

660-foot sand

General statement

Areal distribution

Thickness

Structure

Production

Gas "sands"

Distribution of gas

Structure

Production

Total field production

Initial open-flow capacities

Decline in rock pressure and open-flow volume

Life of gas production

Deep oil sands

Boyer "sand"

Stokes "sand"

Stapleton oil zone

Resume of stratigraphic significance

Structure

Shumway dome

Bishop syncline

Fowler syncline

Boyer dome

Koogler nose

Bancroft syncline

Oil Hill dome

Hegberg syncline

Chesney dome

Theta syncline

Sec. 15, T. 25 S., R. 5 E

Wilson dome

Robinson dome

The Sluss-Smock Pool

Location and extent

Stratigraphy

Structure

Surface rocks

Oil pay

Chelsea Dome: Promising oil territory inadequately tested

Origin of the Eldorado Anticline and of other types of structure found in the northern part of Midcontinent oil and gas fields

Introductory statement

Origin of the en echelon faults

Origin of anticlinal folds

Origin of the buried "granite ridge" of Kansas

Summary of conclusions for origin of Midcontinent types of structure

Original Source of Oil and Gas

Character of the Oil

Character of the Natural Gas

Heating value

Helium content

The Water Problem

General considerations

Eldorado waters

Technological Features

General statement

Outlining of desirable acreage

Leasing

Spacing and drilling of wells

Oil producing

Emulsion treatment

Refineries and pipe lines

References

Plates


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Kansas Geological Survey, Geology
Placed on web July 28, 2017; originally published 1921.
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The URL for this page is http://www.kgs.ku.edu/Publications/Bulletins/7/01_contents.html