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Petrophysical parameters estimated from visual descriptions of carbonate rocks: A field classification of carbonate pore space
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835058 LOCATING THE FROZEN-UNFROZEN INTERFACE IN SOILS USING TYME-DCMAIN P~IEC~MEN~Y. TECHNICAL NOTE Baker, T H W; Davis, J L; Hayhoe, H N Can Geotech J, VIg, ~ , Nov 1982 , P511-517 Time-domain reflect~metry (TDR) has been used to locate the frozen-unfrozen interface in freezing soils both in the laboratory ani in the field, correlations of TDR results with other techniques were found to be excellent. The TDR technique was able to locate the interface to within 0.Scm in the laboratory and to within 2.4cm in the field.
835057
DESIGN OF A LOADED FILTER AND MULTI-LAYERED SAND COLUMN Tanaka, T; Kira, H; Hasegawa, T Soils Found, V22, NS, Sept 1982, P92-I08 The seepage failure problem of a multilaysred sand column caused by a vertically upward seepage f i b is consid~'ed. The critical state chart for seepage failure of a 5-1ayered col~nn is obtained using a new method. This chart is then used in the design of a loaded filter to avoid seepage failure.
835061 ORIGINS OF CLAYS CONTROLLING PERMEABILITY IN TIGHT GAS SANDS Wilson, M D J Pet Technol, V34, N12, Dec 1982, P2871-2876 The low permeabilities of Cretaceous and Paleocene tight gas sands in Wyoming and Colorado are related to the Presence of high-surfacearea authigenic clays. An understanding of the origins of these clays can significantly improve exploration techniques. 835062 ~MPIRICAL EqJATIONS FOR ESTIMATING TWO-PHASE RELATIVE F~%MEABILITY IN CONSC~IDATED ROCK Honarpour, M; Koederltz, L F; Harvey, A H J Pet Technol, V34, NI2, Dec 1982, F2905-2908 The equations were developed from the use of linear regression analysis techniques on a large set of laboratca-y data. 835063 ELECTRICAL ANALOGY OF HYDRAULIC FLOW THROUGH ROCK FRACTURE Sundaram, P N; Frink, D Geotech Test J, V6, NI, March 1983, P3-9 Electrical analogy is used to study the influence of contact areas on the hydraulic flow through rock fractures. The investigation has shown that in the case of radial flow the location of contact zones, as well as the total contact ~rea, influences the flow rate. It is also demonstrated that when injection tests are conducted in boreholes, where the fracture close to the borehole is partially plugged by loose particles or other debris, the flow rate may be substantially underestimated. Auth.
Permeability and capillarity 835o58
RELATIONSHIPS B ~ N SATURATED HYDRAULIC CONDUCTIVITY AND SOME PHYSICAL AND CHEMICAL PROPERTIES Henlry, M J; Paterson, B A Grouni Water, V20, NS, Sept-Oct 1982, P60~-605 Regression analyses were used in c~der to determine empirical relationships between measured saturated hydraulic conluctivities (K sat) and the physical anl chemical parameters of the soil. It is concluded that these l~rameters alone are inaVg~opriate for estimating the hydraulic couductivities aud that other factcrs, such as ~ u c t u r e , may exert a greater control on K sat.
835059
PERMEABILITY OF D~P-SEA CLAYS: NORTHWESq~RN ATLANTIC Cl~key, E C; Silva, A J Marine Geotechnol, %"5, NI, 1982, P1-26 PermeabiLity characteristics of deep-sea sediments were investigated. The coefficients of permeability were directly measured in laboratory tests, aud were also calculated using consolidation test data aud the theory of one dimensional consolidation (2 methods). Of the 2 methods employing the consolidation theory, the square root of time method 8greed more with the measured value. The permeability coefficient measurements dlff~ed aPl~reciably from values predicted by the Koze~-Carman theory, and modifications to the theory are proposed.
835o60
Compressibility, swelling and consolidation see
835064
also: 835193, 83519~, 835198, 835303
PAT±'~S OF SOIL DRYING AND MOISTURE DEFICIT IN THE VICINITY OF TREES ON CLAY SOILS Biddle, P G Geotechnique, V33, N2, June 19@3, PI07-126 The pattern of soil moisture changes in the vicinity of different trees on different clay soils was investigated. It was found that poplars have m~ch greater effects than the other tree species investigated. Clay type was found to make little difference to the pattern of moisture deficit, but permeability a~d amount of shrinkage, with the associated risk of structural dnmqge, deperded on the clay characteristics. It is concluded that soil type should be assessed prier to design and building and that on very high shrinkage clay an increase in foundation depth to l.Sm would accommodate most tree planting designs.
835065 INFLUENCE OF VEGETATION ON MOISTURE AND VOLUME ~.'±'~OFHYSICAL PARAM~'i'~_~SESTIMATED FROM VISUAL DESCRIPI~ONS OF CARBONATE ROCKS: A FIELD CLASSIFICATION OF CARBONATE PORE SPACE Lucia, F J J Pet Technol, V35, N3, March 1983, I:'629-637 A classification of carbonate porosity is presented. Interparticle porosity is classified accc~'di~g to particle size and the dense or porous appearance of the interpartlcle area. V ~ Ixrosity is classified according to the type of intercommection.
CHANGES Ravir~, I Geotechnique, V33, N2, June 1983, P151"158 Reviews the process of moisture depletion in the field and the influence of the presence of vegetation on the mature of soll moisture changes and the associated soil volume changes, especially shrinkage cracking.
835058 LOCATING THE FROZEN-UNFROZEN INTERFACE IN SOILS USING TYME-DCMAIN P~IEC~MEN~Y. TECHNICAL NOTE Baker, T H W; Davis, J L; Hayhoe, H N Can Geotech J, VIg, ~ , Nov 1982 , P511-517 Time-domain reflect~metry (TDR) has been used to locate the frozen-unfrozen interface in freezing soils both in the laboratory ani in the field, correlations of TDR results with other techniques were found to be excellent. The TDR technique was able to locate the interface to within 0.Scm in the laboratory and to within 2.4cm in the field.
835057
DESIGN OF A LOADED FILTER AND MULTI-LAYERED SAND COLUMN Tanaka, T; Kira, H; Hasegawa, T Soils Found, V22, NS, Sept 1982, P92-I08 The seepage failure problem of a multilaysred sand column caused by a vertically upward seepage f i b is consid~'ed. The critical state chart for seepage failure of a 5-1ayered col~nn is obtained using a new method. This chart is then used in the design of a loaded filter to avoid seepage failure.
835061 ORIGINS OF CLAYS CONTROLLING PERMEABILITY IN TIGHT GAS SANDS Wilson, M D J Pet Technol, V34, N12, Dec 1982, P2871-2876 The low permeabilities of Cretaceous and Paleocene tight gas sands in Wyoming and Colorado are related to the Presence of high-surfacearea authigenic clays. An understanding of the origins of these clays can significantly improve exploration techniques. 835062 ~MPIRICAL EqJATIONS FOR ESTIMATING TWO-PHASE RELATIVE F~%MEABILITY IN CONSC~IDATED ROCK Honarpour, M; Koederltz, L F; Harvey, A H J Pet Technol, V34, NI2, Dec 1982, F2905-2908 The equations were developed from the use of linear regression analysis techniques on a large set of laboratca-y data. 835063 ELECTRICAL ANALOGY OF HYDRAULIC FLOW THROUGH ROCK FRACTURE Sundaram, P N; Frink, D Geotech Test J, V6, NI, March 1983, P3-9 Electrical analogy is used to study the influence of contact areas on the hydraulic flow through rock fractures. The investigation has shown that in the case of radial flow the location of contact zones, as well as the total contact ~rea, influences the flow rate. It is also demonstrated that when injection tests are conducted in boreholes, where the fracture close to the borehole is partially plugged by loose particles or other debris, the flow rate may be substantially underestimated. Auth.
Permeability and capillarity 835o58
RELATIONSHIPS B ~ N SATURATED HYDRAULIC CONDUCTIVITY AND SOME PHYSICAL AND CHEMICAL PROPERTIES Henlry, M J; Paterson, B A Grouni Water, V20, NS, Sept-Oct 1982, P60~-605 Regression analyses were used in c~der to determine empirical relationships between measured saturated hydraulic conluctivities (K sat) and the physical anl chemical parameters of the soil. It is concluded that these l~rameters alone are inaVg~opriate for estimating the hydraulic couductivities aud that other factcrs, such as ~ u c t u r e , may exert a greater control on K sat.
835059
PERMEABILITY OF D~P-SEA CLAYS: NORTHWESq~RN ATLANTIC Cl~key, E C; Silva, A J Marine Geotechnol, %"5, NI, 1982, P1-26 PermeabiLity characteristics of deep-sea sediments were investigated. The coefficients of permeability were directly measured in laboratory tests, aud were also calculated using consolidation test data aud the theory of one dimensional consolidation (2 methods). Of the 2 methods employing the consolidation theory, the square root of time method 8greed more with the measured value. The permeability coefficient measurements dlff~ed aPl~reciably from values predicted by the Koze~-Carman theory, and modifications to the theory are proposed.
835o60
Compressibility, swelling and consolidation see
835064
also: 835193, 83519~, 835198, 835303
PAT±'~S OF SOIL DRYING AND MOISTURE DEFICIT IN THE VICINITY OF TREES ON CLAY SOILS Biddle, P G Geotechnique, V33, N2, June 19@3, PI07-126 The pattern of soil moisture changes in the vicinity of different trees on different clay soils was investigated. It was found that poplars have m~ch greater effects than the other tree species investigated. Clay type was found to make little difference to the pattern of moisture deficit, but permeability a~d amount of shrinkage, with the associated risk of structural dnmqge, deperded on the clay characteristics. It is concluded that soil type should be assessed prier to design and building and that on very high shrinkage clay an increase in foundation depth to l.Sm would accommodate most tree planting designs.
835065 INFLUENCE OF VEGETATION ON MOISTURE AND VOLUME ~.'±'~OFHYSICAL PARAM~'i'~_~SESTIMATED FROM VISUAL DESCRIPI~ONS OF CARBONATE ROCKS: A FIELD CLASSIFICATION OF CARBONATE PORE SPACE Lucia, F J J Pet Technol, V35, N3, March 1983, I:'629-637 A classification of carbonate porosity is presented. Interparticle porosity is classified accc~'di~g to particle size and the dense or porous appearance of the interpartlcle area. V ~ Ixrosity is classified according to the type of intercommection.
CHANGES Ravir~, I Geotechnique, V33, N2, June 1983, P151"158 Reviews the process of moisture depletion in the field and the influence of the presence of vegetation on the mature of soll moisture changes and the associated soil volume changes, especially shrinkage cracking.