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Spontaneous potential log, commonly called the self potential log or SP log, is a passive measurement taken by oil industry well loggers to characterise rock formation properties. The log works by measuring small electric potentials (measured in millivolts) between depths with in the borehole and a grounded electrode at the surface.
As established earlier, static SP is defined as follow: SSP = −K log (R mfe /R we) Static SP (SSP) can be obtained directly from the SP curve if the bed is clean, thick, porous, permeable, and only moderately invaded. When these conditions are not met, the recorded SP will need to be corrected. Various correction charts are available for this ...
The upper cluster has two roughly parallel curvy plots using S&P 500 Monthly $ MAXIMUM values for the upper line and $ MINIMUM values for the lower line 1/1950 to latest on chart. The upper cluster has 2 straight lines a Best Fit Upper, and Best Fit Lower, which in effect represent one line with thickness or separation, value see chart legend.
This lists the singles that reached number one on the Spanish PROMUSICAE sales and airplay charts in 2023. Total sales correspond to the data sent by regular contributors to sales volumes and by digital distributors.
Pages for logged out editors learn more. ... This is a list of the number-one singles on the PROMUSICAE Top 20 Physical Singles chart in 2005. [1] [2] Issue date ...
Pages for logged out editors learn more. ... Printable version; In other projects ... This is a list of the Spanish PROMUSICAE Top 20 Singles number-ones of 1998. [1 ...
Pages for logged out editors learn more. Contributions; Talk; ... This is a list of number-one hits in Spain by year from the chart compiled weekly by PROMUSICAE. [1 ...
Issue Date Song Artist 2 January "Zombie" Ororo: 9 January 16 January 23 January "Dancing with Tears in My Eyes" Cabballero 30 January "Zombie" Ororo 6 February 13 February "No More I Love You's"