GEOPHYSICAL METHODS AND APPLICATIONS

The following table shows the logging services offered by BBI-GmbH, Gommern, Germany:

SERVICE
(product code)
DESCRIPTION
Gamma Ray Log
(GR)
Measurement of the gamma radiation of rocks for lithology description in particular for characterisation of sand, clay and silt
Caliper Log
(CAL)
Determination of the borehole caliper; determination of the gravel pack volume; identification of pebbles and boulders; control of coarse-grained sands and plastic clays
Focused Electrolog
(FEL, BFEL)
High-resolution focused resistivity log to determine formation resistivity porosity and water table
Long- and short spacing Resistivity Log
(ES 16/64")
Deep resistivity log to determine formation resistivity porosity and water table
Gamma-Gamma-Density Log
(GG, RRK)
  • Dual detector log to determine formation density; characterisation of lithology
  • Mono detector to analyse casing anulus
Fluid Density Log
(FD)
Measurement of borehole fluid density
Pulsed Neutron Lifetime Log
(INN)
Dual detector neutron logging instrument for determination of porosity, lithology and water saturation
Salinity Log
(SAL)
Determination of the borehole fluid resistivity; analysis of ground water dynamics; determination of fluid flow into the formation of the borehole
Temperature Log
(TMP)
Determination of the borehole fluid temperature in order to correct the borehole fluid resistivity; analysis of ground water dynamics
Casin Colar Locator
(CCL)
Determination of the depth of casing joints
Flowmeter
(FLOW)
Determination of flow rates of borehole fluids in cased- and openhole completed boreholes
Sample Log
(PROB)
Taking of liquid and gaseous samples from predefined depth
Susceptibility Log
(SUZ)
Measurement of susceptibility of the surrounding rock or metallic objects in the borehole
Final depth
(ETB)
Determination of final depth of boreholesby geophon measuring, particularly by larger depths
Borehole deviation
(BA)
Determination of the course of the borehole continuously, devided into azimuth and inclination, computing of horizontal and vertical projections and of whole deviation in x- and y-direction

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