Study and application of cementation slurry in Suligegas field separate layer fracturing well section

In view of gas channeling in the course of fracture construction in Sulige Gas Field, a gas channeling prevention and high strength cementation slurry has been researched to the enterprise by experiment optimized latex and cement additives. Experiment in lab shows that the slurry has low free fluid and good rheological property, the flexural strength increased about ten percents, the maximum compressive strength reach 29.5 MPa in 48 hours, It has passed through 3 wells test, the first interface merit factor of one hundred percent and the second interface merit factor more than 94%.The construction pressure is normal, gas channeling is not appeared, meet the stratification of Changqing gas field fracturing of annular cement stone integrity requirements.