propping of fracture

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Hydraulic fracturing — is fractures formation in gas , oil , water saturated and other rocks under the pressure of the fed fluid. The operation is performed in a well in order to increase extraction rates by means of the multi hole drainage system made as a result of… … Glossary of Oil and Gas
Masturbation — Onanism redirects here. For the Biblical origin of the term onanism , see Onan. Gustav Klimt s Woman seated with thighs apart (1916) … Wikipedia

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