南襄盆地泌阳凹陷陆相页岩储层压裂技术研究与应用

Study and application of fracturing techniques for continental shale reservoir in Biyang depression of Nanxiang basin

页岩气作为三大非常规油气资源之一,资源量十分丰富,近期研究认为南襄盆地泌阳凹陷具备页岩油气成藏条件。针对泌阳凹陷陆相页岩储层的地质特征,开展了陆相页岩储层压裂技术研究,以A1井为例,通过对射孔工艺、压裂液体系、施工参数及压裂工艺技术的优化与研究,形成了适合泌阳凹陷陆相页岩储层的压裂技术。该压裂技术在泌阳A1井现场实施,获得日产4.68m^3的工业油流,从而使泌阳凹陷成为我国首个取得陆相页岩油突破的地区。该技术的成功应用对河南油田及国内陆相页岩储层压裂改造具有重要的指导意义。

Shale gas is one of three unconventional oil and gas resources. Resources are abundant.Recent study suggests that there are conditions of shale oil and gas formation in Biyang depression of Nanxiang basin.According to the geological characteristics of continental shale reservoir in Biyang depression,study of fracturing techniques for continental shale reservoir is performed.Al well,for instance,by studying the perforation technology,fracturing fluid systems, construction parameters,fracturing procedures optimization and research,it is established fracturing technology to suit continental shale reservoir.By implementation in Al well, commercial oil flows 4.68 m3/d can be obtained,thus turning Biyang depression into obtaining continental shale regions in china firstly.The successful application of this technique has great meaning for fracturing continental shale reservoir for Henan oilfield and domestic continental shale reservoir fracturing reformation.