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USE OF NATURAL LOW-LEVEL RADIOACTIVITY OF RAW MATERIALS TO EVALUATE GRAVEL PACK AND CEMENT PLACEMENT IN WELLS
USE OF NATURAL LOW-LEVEL RADIOACTIVITY OF RAW MATERIALS TO EVALUATE GRAVEL PACK AND CEMENT PLACEMENT IN WELLS
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机译:利用天然低水平放射性评估井中的碎石堆积和水泥沉积
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摘要
Methods for logging a well utilizing natural radioactivity originating from clay based particulates are disclosed. The methods can include utilizing a gravel pack slurry containing a liquid and gravel pack particles to hydraulically place the particles into a gravel pack zone of a borehole penetrating a subterranean formation and obtaining a post gravel pack data set by lowering into the borehole traversing the subterranean formation a gamma ray detector and detecting gamma rays resulting from a native radioactivity of the gravel pack particles. The methods can further include using the post gravel pack data set to determine a location of the gravel pack particles and correlating the location of the gravel-pack particles to a depth measurement of the borehole to determine the location, height, and/or percent fill of gravel-pack particles placed in the gravel pack zone of the borehole.
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