Improvement of the well cementing technology, increasing the reliability of the annule isolation and preserving the permeability of the reservoir

The article presents measures to improve the quality of cementing production string high-performance wells. relevance proposed technological solutions is substantiated. results experimental studies installation simulating processes occurring during thickening cement slurry under action gravitational forces are presented. An algorithm for creating overpressure on wellhead fastening proposed. compositions process fluids described, which increase reliability annular space isolation and preserve permeability reservoir, provide main data their laboratory studies. For string, composition expanding has been developed procedure its preparation established. solution low water separation high sedimentation resistance; adjustable rheological parameters. Cement stone characterized by gas strength properties.