Drilling a geothermal well consists of a succession of steps of drilling and well casing construction until the top of the resource is reached. Drilling costs are highly dependent upon resource characteristics. Other economic parameters may, however, also influence the total cost of drilling.
This article offers a brief overview of the five primary manufacturing processes of steel tubular product. It is useful to review the major manufacturing processes of these materials and relate them to their primary purposes, as well as their potential for use as water well casing.
Sometime back, I was a geothermal site inspector for a college. My job was to oversee and document all the geothermal holes drilled, closed loops installed, grouting of the holes and the testing of the loops …
Saipan is an island located in the Western Pacific and is part of the Commonwealth of the Northern Mariana Islands. Here, the Commonwealth Utilities Corporation, in association with the United States Geological Survey, has been busy developing a plentiful and sustainable water supply for its inhabitants that meets the Federal Clean Water Act.
A multi-faceted, baseline experimental study was conducted to support the development of improved drag cutters for advanced drill bits. A wide range of behavior was observed, and analyses of the test results assessed the relative merits of the variables, allowing identification of features contributing to improved cutter performance in hard-rock drilling applications.
There are as many ways and reasons to put a hole in the ground as there are variations in geology. Although many drilling contractors will never use all the tools that are available, it often is interesting to see how our colleagues working in other applications do their jobs.
Regardless of purpose, almost all water wells must be provided with a means of protecting the borehole and provision made for the entrance of water from surrounding aquifers. This article discusses casing and screen materials in common use in the word today. It also sets forth the factors to be considered in their choice.
We had some real bad storms when we were living in southern Georgia. One storm knocked a baby squirrel out of the tree in front of our shop. The boys and myself wrapped him up in a towel and took him home …
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