Peculiarities of drilling and sampling during exploration of phosphorite-bearing deposits of Estonian SSR
Authors:
Abstract
Drilling for phosphorite exploration in the ESSR is characterized by the lack of a reliable method for obtaining cores of shell sandstones composing the phosphorite-bearing strata. A typical geologic section of Estonian phosphate deposits is as follows ...
Область исследования:
(Archived) Without section
Funding:
None
References
- Amelin B.A., Vasiliev V.D., Glinsky E.S. New methods of non-metallic fastening of boreholes. L., Nedra, 1964.
- Kudryashov B.B., Chistyakov V.K. Principles of Calculation of Drilling Parameters with Simultaneous Freezing of Passable Rocks. Journal of Mining Institute, 1969, vol. 57, iss. 2.
- Vorotintsev V.T. Double Core Pipes. Ugletekhizdat, 1953.
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