Problems of deep well construction

Oil and gas wells are high-value fundamental structures designed to be a reliable object of relevant works for a significant period of time. The bore wells act as a connecting channel between productive formations and surface equipment. Above all, they must be characterized by air-tightness, strength, reliability and durability. However, under real-life conditions, the drilled wellbore is not such a channel due to the compound action of the following factors: poor ground condition.