低渗致密砂岩气田压裂改造技术

Fracture Reconstraction Technique in Tight and Low Permeability Sandstone Gas-field

针对文23气田储层低孔、低渗、水敏等地质特点,通过室内实验配制出一种与储层配伍性好、具有较好的防膨效果、易返排的压裂液体系,并通过优选支撑剂和压裂方式,形成了比较完整的压裂技术。现场应用取得了较好效果。

In consideration of the geologic characteristics of low porosity, low permeability and water sensitivity in reservoirs of Wen 23 Gas-field, through a laboratory experiment, a fracturing system of good compatibility with the reservoirs, a good expansion preventing effect, easy to be flowing back is prepared, more integral fracturing techniques are created through optimal selection of proppant and fracturing ways, good effect of field application is achieved.