Abstract:

It is difficult to obtain more reserve to increase well capacity and make a considerable profit due to such problems that exist in the tight clastic gas reservoir of Xinchang gas field as complex production performance, low recovery rate and short stablproduction time. According to lab research and pilot test, fracturing reservoir technology is applicable in tight clastic gas reservoir, which can remarkably improve gas production. In this paper an improved new fracturing reservoir mathematical model ipresented for tight gas reservoir of low permeability by takin both low non-Darcy flow and high non-Darcy flow into account. Based on the model above, a fracturing reservoir plahas been worked out for upper Shaximiao Group reservoir in thpilot area of Xinchang gas field.

Key words: fracturing reservoir, production performance, tight clastic gas reservoir, natural fracture, Xinchang gas field