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Schlumberger (Wenner) Wenner alpha; Wenner beta; Wenner gamma; Pole-pole; Dipole-dipole; Pole-dipole; Equatorial dipole-dipole; Resistivity. Resistivity measurement of bulk materials is a frequent application of electrode arrays. The figure shows a Wenner array, one of the possible ways of achieving this.
Casing is a large diameter pipe that is assembled and inserted into a recently drilled section of a borehole.Similar to the bones of a spine protecting the spinal cord, casing is set inside the drilled borehole to protect and support the wellstream.
Conrad developed the Schlumberger array, which was a technique for prospecting for metal ore deposits, and the brothers adapted that surface technique to subsurface applications. On September 5, 1927, a crew working for Schlumberger lowered an electric sonde or tool down a well in Pechelbronn, Alsace, France creating the first well log.
Schlumbergera is a small genus of cacti with six to nine species found in the coastal mountains of south-eastern Brazil.These plants grow on trees or rocks in habitats that are generally shady with high humidity, and can be quite different in appearance from their desert-dwelling cousins.
An anticline is an area of the subsurface where the strata have been pushed into forming a domed shape. If there is a layer of impermeable rock present in this dome shape, then hydrocarbons can accumulate at the crest until the anticline is filled to the spill point - the highest point where hydrocarbons can escape the anticline.
The formation evaluation gamma ray log is a record of the variation with depth of the natural radioactivity of earth materials in a wellbore. Measurement of natural emission of gamma rays in oil and gas wells are useful because shales and sandstones typically have different gamma ray levels.
A perforation in the context of oil wells refers to a hole punched in the casing or liner of an oil well to connect it to the reservoir.Creating a channel between the pay zone and the wellbore to cause oil and gas to flow to the wellbore easily.
Common usage. Turnkey refers to something that is ready for immediate use, generally used in the sale or supply of goods or services. The word is a reference to the fact that the customer, upon receiving the product, just needs to turn the ignition key to make it operational, or that the key just needs to be turned over to the customer.