Drill and casing pipes for drilling oil and gas wells in the expanse of water of seas and oceans

摘要

drilling and casing pipes u0434u043bu00a0 u0431u0443u0440u0435u043du0438u00a0 gas and u043du0435u0444u0442u00a0u043du044bu0445 wells in the water areas of the seabed and the ocean floor with drilling and casing pipes, the ends of which u043du0430u0440u0435u0437u0430u043du0430 u043eu0442u043bu0438u0447u0430u044eu0449u0438u0435u0441u00a0 groove, so that the outside of the casing pipes are installed u0431u0443u0440u0438u043bu044cu043du043eu0439 and cylinders with the outer pipe with a diameter of 1.0 mm, and 50000 plug filled with, for example,gaseous nitrogen or an inert gas under pressure from 0.0001 to 500 mpa, the cylinders are located along the length of u0431u0443u0440u0438u043bu044cu043du043eu0439 and casing pipe, upper and lower u0447u0430u0441u0442u00a0u0445 there are s and the casing pipes, or in the upper and lower u0447u0430u0441u0442u00a0u0445 u0431u0443u0440u0438u043bu044cu043du043eu0439 and casing pipes, or in the upper, middle and lower u0447u0430u0441u0442u00a0u0445 u0431u0443u0440u0438u043bu044cu043du043eu0439 and casing pipeor cylinders 1 to 500 are length of each u0431u0443u0440u0438u043bu044cu043du043eu0439 and casing pipes in u0440u0430u0441u0441u0442u043eu00a0u043du0438u0438 0.0001 - 1000 meters.