METHOD FOR FINISHING WELL Russian patent published in 1996 - IPC

FIELD: well drilling. SUBSTANCE: solution being neutral to filtration properties of productive stratum is pump in the well. Solution comprising (% by weight) 0.08 - 1.0 polymer of acryl line, 0.8 - 3.0 carbonate-weighting compound, the balance being water, is used. Explosion perforators are used for the purpose of this. Then before descending development string is equipped with plugs of acid destructible material. Development string is descended. This is cemented. They are waiting for cement solidification. Then secondary stratum opening is carried out. This is done by pumping acid in the development string. In so doing plugs are destructed and carbonate weighting compound is dissolved in the productive stratum. Besides polyacrulamide is used as polymer of acryl line. EFFECT: higher efficiency.