| 摘要 |
FIELD: oil and gas industry.SUBSTANCE: invention refers to oil and gas industry, and namely to repair methods of wells subject to water circulation behind the string due to disturbance of integrity of cement stone. After preliminary pumping of curable solution of resin to the space behind the string, simultaneous pumping of curable resin solution and cement solution is performed; at that, selection of resin and pumping mode of curable solution of the chosen resin and cement solution shall be made in the ratio of 75:25 vol. %, which provides formation of strong cement-resin stone. In addition, tubing layout includes a packer. Simultaneous pumping of curable resin and cement solution is performed along two concentric tubing columns. As resin, acetone-formaldehyde resin curable with a curing compound with alkali pH is used.EFFECT: improving the effectiveness of the well repair method owing to preventing formation of weak plugging stone in the mixing zone.3 cl, 1 dwg |
