低渗致密气藏压裂增产技术

Fracturing technique for low permeability and tight gas reservoir

刘兆江

Liu Zhaojiang

吐哈油田分公司鲁克沁采油厂，新疆 鄯善 838202

(Lukeqin Oil Production Plant, Tuha Oilfield Company, CNPC, Shanshan 838202, China).

红台气田属于低孔特低渗致密气藏，气井的自然产能很低，常规加砂压裂改造方法不能达到理想的增产效果。为了实现难动用储量的有效开发，通过压裂工艺技术的研究，形成了一套适合红台气田储层特征的压裂改造技术。现场应用32井次，施工成功率得到了进一步提高，压裂液返排率较高，对地层伤害小，增产效果明显，为红台气田的产能建设提供了有力的技术保障。

Hongtai Gas Field is a low porosity,extra low permeability,low productivity and tight gas field. The conventional hydraulic fracturing hasn’t achieved the expectation goal. In order to realize the effective development,a series of techniques of hydraulic fracturing and reforming suitable to Hongtai Gas Field are developed after researching fracturing technique. These techniques are applied on site for 32 wells. The success rate of the hydraulic fracturing improves and the flowback of the fracturing fluid is high. The damage of the fracturing fluid to the gas zone is small and the effect of stimulation treatment is obvious,which can provide an important technical guarantee to productivity construction of Hongtai Gas Field.