| 摘要 |
FIELD: oil and gas industry, particularly methods or devices for cementing, for plugging holes, crevices, or the like. ^ SUBSTANCE: method involves delivering plugging composition with cement packed in light-weight containers in lost-circulation zone in separate portions via drill string by liquid column; unloading light-weight containers and forcing thereof in reservoir by rotation along with drill string reciprocation; repeating above operations after each portion delivery into well. Before each container portion delivery into water- and oil-permeable reservoir interval the containers are held in water to initiate cement hardening in plugging composition. Containers are delivered in aqueous medium by simultaneous water and container supply in drill string. After each container portion delivery termination liquid supply into drill string is finished. Said containers are produced of water-permeable fabric. Lower drill string end has clutch-like shoe. ^ EFFECT: increased efficiency. ^ 2 tbl |
