Published February 2014
On service time increasing of offshore oil field hydro-technical structure
F.K. HasanovAs a result of scientific-research works, it was established that the zones of platform construction elements periodical smash and platform squares are much more underwent corrosion processes. Corrosion rate in these locations composes 0.4 mm per year. It is not accidental that in particular these zones often need overhauls. A new techology, on the basis of which in the zones of platform elements periodical smash and platforms squares, where corrosion reached up to 30 %, a monolith iron-concrete supporting structure, that leads to the increase of service life for more 20 years and decrease overhaul charges almost for two times, is offered. If the supporting structure corrosion rate reaches to 30 % and more (at the depth to 7m), as an alternative combined iron-concrete construction is suggested. According to this variant platform service time is calculated for 35-40 years, and the overhaul charges less for 1.9 times. Also application of combined iron-concrete construction during platform squares overhaul is suggested. To increase corrosion protection and mechanical steadiness of zones of constructions periodical smash, composite covers were offered for the first time.
