2975 K
64 pp.
 
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TitleOil Recovery Enhancement from Fractured, Low Permeability Reservoirs. [Carbonated Water]
Author(s)Poston, S. W.
Publication Date1991
Report NumberDOE/BC/14444-14
Unique IdentifierACC0260
Other NumbersLegacy ID: DE93012803; OSTI ID: 6868664; OSTI ID: 10146380
Research OrgTexas A and M University, College Station, TX (United States)
Contract NoFG22-89BC14444
Sponsoring OrgUS Department of Energy (USDOE), Washington, DC (United States)
Subject02 Petroleum; 58 Geosciences; Geologic Fractures; Mapping; Oil Wells; Waterflooding; Bench-Scale Experiments; Carbon Dioxide Injection; Computerized Tomography; Drill Cores; Enhanced Recovery; Fractured Reservoirs; Numerical Data; Petroleum; Progress Report; Seismic Surveys; Texas; Well Logging; Data; Developed Countries; Diagnostic Techniques; Document Types; Energy Sources; Fluid Injection; Fossil Fuels; Fuels; Geologic Structures; Geophysical Surveys; Information; Miscible-Phase Displacement; North America; Surveys; Tomography; USA; Wells
Related Web PagesNon-medical Uses of Computed Tomography and Nuclear Magnetic Resonance
AbstractThe results of the investigative efforts for this jointly funded DOE-State of Texas research project achieved during the 1990-1991 year may be summarized as follows: Geological Characterization - Detailed maps of the development and hierarchical nature the fracture system exhibited by Austin Chalk outcrops were prepared. The results of these efforts were directly applied to the development of production decline type curves applicable to a dual-fracture-matrix flow system. Analysis of production records obtained from Austin Chalk operators illustrated the utility of these type curves to determine relative fracture/matrix contributions and extent. Well-log response in Austin Chalk wells has been shown to be a reliable indicator of organic maturity. Shear-wave splitting concepts were used to estimate fracture orientations from Vertical Seismic Profile, VSP data. Several programs were written to facilitate analysis of the data. The results of these efforts indicated fractures could be detected with VSP seismic methods. Development of the EOR Imbibition Process - Laboratory displacement as well as Magnetic Resonance Imaging, MRI and Computed Tomography, CT imaging studies have shown the carbonated water-imbibition displacement process significantly accelerates and increases recovery from oil saturated, low permeability rocks. Field Tests - Two operators amenable to conducting a carbonated water flood test on an Austin Chalk well have been identified. Feasibility studies are presently underway.
2975 K
64 pp.
 
View Document 
  


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