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St. Petersburg Coastal and Marine Science Center

St. Petersburg Coastal and Marine Science Center > Subsidence and Wetland Loss Related to Fluid Energy Production

Probable Production Induced Subsidence, Fault Reactivation, and Wetland Loss in the Gulf Coast Region

Presentation by Robert A. Morton

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"Probable Production Induced Subsidence, Fault Reactivation, and Wetland Loss in the Gulf Coast Region" summarizes the significant results of a U.S. Geological Survey study conducted recently in Louisiana and Texas. The study results and their implications with regard to coastal restoration were presented to government agencies, academicians, consultants, and the general public in Lafayette, Baton Rouge, and New Orleans, Louisiana the week of April 7, 2003. Additional information and supporting documents can be found at http://coastal.er.usgs.gov/gc-subsidence/.

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Table of Contents:

Title slide

Scientific objectives

Objectives continued

Environmental applications

Evidence of induced subsidence and fault reactivation

Evidence continued

Conceptual diagram showing possible effects of petroleum production

Field surveying methods

Cocodrie tide gauge

Sediment coring

Texas location map

Field production summaries

Port Neches Field map

Port Neches water depths and core locations

Port Neches core correlations

Texas location map

Photo of faults at Caplen Field

Caplen Field map

Caplen Field water depths and core locations

Caplen Field core correlations

Texas location map

Clam Lake map

Aerial photo of Clam Lake fault

Clam Lake topographic profile

Wetlands photo of Clam Lake fault

Louisiana location map

Louisiana data sets

Field production summaries

Annual production Valentine

BHP Valentine

Annual production Houma

Annual production Lirette

Annual production Lapeyrouse

BHP Lapeyrouse

Pressure gradient decline Lapeyrouse

Madison Bay core

Houma tide gauge

Relative sea-level rise at tide gauges

NGS relevel data 1965 - 1982

Accelerated subsidence at Valentine Field

NGS relevel data 1966 - 1993

Average geological and historical rates of subsidence for the Terrebonne delta plain region near Madison Bay

Annual production Lapeyrouse

Delta plain wetland loss

Conclusions

Conclusions continued

Related Research Project:

Subsidence and Wetland Loss Related to Fluid Energy Production, Gulf Coast Basin
USGS Coastal & Marine Geology Program

Related Link:

Energy Resource Program
USGS

St. Petersburg Coastal and Marine Science Center > Subsidence and Wetland Loss Related to Fluid Energy Production

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