Extension of Effective Field Development Period by Means of Repeated Bringing into Development of Underlying Production

Efficiency of comprehensive approach to organization and implementation of GTM may be estimated by changing of technological parameters of wells operation. Due to the high technological success of insulation of gas and water flow breaks from overlying beds during transfer to underlying strata (25 well-operations), over 240 thousands tons of oil were produced additionally in Saratov, Orenburg regions and Western Siberia in 2006-2007. Success of insulating works on top intervals of stratum with subsequent transfer to underlying facility depends to a large extent on the following factors: • Insulation intervals and perforation determination accuracy by means of NPM research results; • Selection of squeeze cementing technology; • Selection of backfill composition formula and amount of cement; • Selection of well-killing fluid; • Quality of perforating works.