Volume and accessibility of entrained (solution) methane in deep geopressured reservoirs - tertiary formations of the Texas Gulf Coast. Final report

Technical Report · Wed Oct 01 04:00:00 EDT 1980

DOI:https://doi.org/10.2172/5282675· OSTI ID:5282675

Gregory, A R; Dodge, M M; Posey, J S; Morton, R A

The objective of this project was to appraise the total volume of in-place methane dissolved in formation waters of deep sandstone reservoirs of the onshore Texas Gulf Coast within the stratigraphic section extending from the base of significant hydrocarbon production (8000 ft)* to the deepest significant sandstone occurrence. The area of investigation is about 50,000 mi/sup 2/. Factors that determine the total methane resource are reservoir bulk volume, porosity, and methane solubility; the latter is controlled by the temperature, pressure, and salinity of formation waters. Regional assessment of the volume and the distribution of potential sandstone reservoirs was made from a data base of 880 electrical well logs, from which a grid of 24 dip cross sections and 4 strike cross sections was constructed. Solution methane content in each of nine formations or divisions of formations was determined for each subdivision. The distribution of solution methane in the Gulf Coast was described on the basis of five reservoir models. Each model was characterized by depositional environment, reservoir continuity, porosity, permeability, and methane solubility.

• Research Organization: Texas Univ., Austin (USA). Bureau of Economic Geology
• DOE Contract Number: AC08-78ET11397
• OSTI ID: 5282675
• Report Number(s): DOE/ET/11397-1; ON: DE82008140
• Country of Publication: United States
• Language: English

Related Subjects

03 NATURAL GAS
030100 -- Natural Gas-- Reserves-- (-1989)
15 GEOTHERMAL ENERGY
150101* -- Geothermal Energy-- Resources & Availability-- USA-- (-1989)
ALKANES
AVAILABILITY
DISTRIBUTION
ENERGY SYSTEMS
ENGINEERING
ENTRAINMENT
FEDERAL REGION VI
GEOLOGIC MODELS
GEOLOGIC STRUCTURES
GEOLOGY
GEOPRESSURED SYSTEMS
GULF COAST
Geothermal Legacy
HYDROCARBONS
INVENTORIES
METHANE
NORTH AMERICA
ORGANIC COMPOUNDS
PERMEABILITY
POROSITY
RECOVERY
REGIONAL ANALYSIS
RESERVOIR ENGINEERING
RESOURCE ASSESSMENT
ROCKS
SANDSTONES
SEDIMENTARY ROCKS
SHALES
SOLUBILITY
TEXAS
USA
VOLUME