Subject: Для проверки и замечаний oil Oil based drilling fluid utilization and re-injection of drilling cuttings into the well for offshore semisubmersible drilling installations.Re-injection of drilling cuttings into the well is the most applicable and economical technique for drilling cuttings disposal. Drilling cuttings are moved away through annulus or tubing into the main horizon (stratum) usually made of sand or clay shale – at the shoe level of 13 3/8” casing pipe. It is possible to inject drilling cuttings at the rate equal to rate of drilling cuttings build-up (in accordance with a mechanical ROP – rate of penetration). It is essential to have in the well free annular space В, i.e. the wells should not be cemented up to the casing shoe 13 3/8”; the well must be in reasonable condition taking into account the loads that will be applied under technology. версия: |
на масляной основе = на НЕФТЯНОЙ основе подъемную трубу = НКТ |
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