WAY TO EXECUTE CHAMBERING-BLASTING OPERATIONS IN WELLS ( VARIANTS ) Russian patent published in 2003 - IPC

FIELD: oil and gas industry. SUBSTANCE: way includes positioning of chambering-basting equipment and damping members in interval of productive bed to reduce effect of blast on downhole equipment, casing string and layer of cement stone in string clearance located away from point of blast. While conducting chambering-blasting operations in wells with sunk tubing string damping members are placed in lower part of tubing string and they come in the form of rigid rings put on outer surface of tubing string in number determined by analytical expression. In accordance with second variant damping members are positioned on pipe placed on one or both sides of chambering-blasting equipment in number also found by analytical expression. EFFECT: reduced harmful effect of blast on downhole equipment, casing string and cement stone located off point of blast. 3 cl, 3 dwg