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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).
Production at Elm Coulee has more than doubled the oil output of the state of Montana, from around 40,000 barrels per day (6,400 m 3 /d) in 2000 to almost 100,000 barrels per day (16,000 m 3 /d) in 2006. However, Montana production fell again starting in 2007, down to some 70,000 barrels per day (11,000 m 3 /d) in mid-2009. [9] [10]
Cat Creek Oil Field (1921) The Cat Creek Oil Field is located near the community of Cat Creek in Petroleum and Garfield counties in the U.S. state of Montana.The geological terminology used by Bowen, the geologist, to define the geological structure of Cat Creek in 1914 was Cat Creek Anticline.
There are at least 45 named oil fields in Montana according to the U.S. Geological Survey, Board of Geographic Names. The USGS defines oil field as: "Area where petroleum is or was removed from the Earth." [1] An oil field is a region with an abundance of oil wells extracting petroleum (crude oil) from below ground.
Ludowici Well, Ludowici, Georgia; Maka Yusota, Savage, Minnesota; McConnell Springs Park, Lexington, Kentucky; Olympia Brewery, Olympia, Washington (see Olympia Brewing Company#Use of artesian water) Polk Theater well, Lakeland, Florida; possibly used in the loop of the first air conditioning system in America; Pryor Avenue Iron Well, Milwaukee ...
Borehole imaging logs are logging and data-processing methods used to produce two-dimensional, centimeter-scale images of a borehole wall and the rocks that make it up. These tools are limited to the open-hole environment.
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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.