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Languages : en
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Book Description
Oil Recovery Enhancement from Fractured, Low Permeability Reservoirs. Quarterly Technical Progress Report, July 1, 1991-September 30, 1991
Author: Oil Recovery Enhancement from Fractured, Low Permeability Reservoirs. Annual Report, October 1, 1991--September 31, 1992
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Languages : en
Pages : 51
Book Description
The results of the investigative efforts for this jointly funded DOE-State of Texas research project achieved during the 1991-1992 year are summarized. Progress is described in: (i) geological characterization, (ii) development of the EOR imbibition process, (iii) transfer of technology, and (iv) field tests.
Oil Recovery Enhancement from Fractured, Low Permeability Reservoirs. Annual Report 1990-1991, Part 1
Author: Oil Recovery Enhancement from Fractured, Low Permeability Reservoirs. Part 2, Annual Report, October 1, 1990-September 31, 1991
Author: Energy Research Abstracts
Author: Oil Recovery Enhancement from Fractured, Low Permeability Reservoirs. Annual Report, October 1, 1990--September 31, 1991, Annex 4
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Languages : en
Pages : 62
Book Description
The 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.
Oil Recovery Enhancement from Fractured, Low Permeability Reservoirs. [Quarterly] Report, January 1, 1993--March 31, 1993
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Languages : en
Pages : 6
Book Description
Progress reports are presented for the following: Subtask l-- interpreting and predicting fractures; Subtask 2--relating recovery to well-log signatures; and Subtask 4--mathematical modeling. Some of the highlights are as follows; substantial improvement in the determination of the orientation of the fractures has been obtained when source imbalances are corrected; further improvement is achieved when the down-hole geophones are assumed to be in the direction of the sources and their coupling variations corrected; petrographic analysis of microseams was conducted on 16 thin sections to determine the gross composition and relationship of seams to microfractures; the semi-analytical model was used to describe the laboratory imbibition oil recovery behavior by plain water and carbonated waterflood at 70°F, 110°F and 150°F; and the compositional, dual-porosity numerical model (COMABS) was used to describe the laboratory imbibition oil recovery from a chalk core.
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