STAGED FRACTURING TECHNOLOGY IN LONG LATERAL SEGMENT OF TIGHT CONDENSATE GAS RESERVOIR

The distribution of deep tight condensate gas reservoir in Dongpu sag of Zhongyuan oilfield is wide, the reservoir is characterized by long sandstone and mudstone alternate layer, thick single sand layer, tight lithology and poor reservoir physical property. The development effect of the reservoir using conventional fracturing technology is poor, multilayer and multiple sections fracturing are the core technology of this kind reservoir development. In order to promote development of tight gas reservoir, through optimizing fracturing design, researching reservoir protection technology, and introducing multilayer fracturing completion system, the staged fracturing technology was used successfully in horizontal well with long horizontal section, and the fracturing technology could be also used for straight well and directional well. The fracturing technology changed the development mode of zone-by-zone fracturing, and effectively developed the deep and tight condensate gas reservoir.