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A caliper log is a well logging tool that provides a continuous measurement of the size and shape of a borehole along its depth [1] and is commonly used in hydrocarbon exploration. The measurements that are recorded can be an important indicator of wash-outs, cave ins or shale swelling in the borehole, which can affect the results of other well ...
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.
During such drilling, data is acquired from the drilling rig sensors for a range of purposes such as: decision-support to monitor and manage the smooth operation of drilling; to make detailed records (or well log) of the geologic formations penetrated by a borehole; to generate operations statistics and performance benchmarks such that ...
Well logging, also known as borehole logging is the practice of making a detailed record (a well log) of the geologic formations penetrated by a borehole.The log may be based either on visual inspection of samples brought to the surface (geological logs) or on physical measurements made by instruments lowered into the hole (geophysical logs).
Download QR code; Print/export ... Measurement while drilling ... Template documentation. See also This page was last edited on 30 March ...
QGIS well log and timeseries visualisation plugin Oslandia, Orano and CEA: GPLv2 or later: Cross-platform: Python: Interfaces with QGIS: OpenGeoPlotter Mineral exploration drill hole data visualization and cross section generator, strip logs, stereonet GPL: Cross-platform: Python: Open source PyQt5 app catered to the exploration industry
The well site is the front line of well log quality control. Only while the equipment is on-site and the well bore is open is it possible to investigate in-situ formations, and, if necessary, influence decisions which can result in better, higher data quality. If the problem is detected it can be readily addressed by the personnel around. [4]
If the pores are partially filled with gas or oil, which are resistant to the passage of electric current, the bulk formation resistance is higher than for water filled pores. For the sake of a convenient comparison from measurement to measurement, the electrical logging tools measure the resistance of a cubic meter of formation.