塔河油田托甫台地区奥陶系油藏深度酸压技术应用  

APPLICATION OF ACID FRACTURING TO ORDOVICIAN RESERVOIR IN TUOFUTAI AREA,TAHE OILFIELD

作　　者：黄燕飞[1] 

机构地区：[1]中国石化西北油田分公司工程技术研究院

出　　处：《天然气勘探与开发》2010年第1期68-71,共4页Natural Gas Exploration and Development

摘　　要：塔河油田托甫台地区奥陶系油藏位于油田西南部,油藏构造位置属塔里木盆地沙雅隆起中段阿克库勒凸起南部,是塔河油田的西南外扩区域,远离主体区块,与主体区块相比,地层深度、压力及井温都有较大变化,同时油水关系复杂,对储层改造的针对性要求很高。为了提高液体效率和油层处理强度,建议打水泥塞封堵下部储层,酸压上部主力油层,并通过技术方案的优化,采用压裂液+变粘酸酸压工艺,提高酸蚀裂缝长度与酸液穿透深度。而变粘酸具有低摩阻、低滤失、缓速性能,以及酸液的转向作用,增强了酸蚀裂缝的沟通能力。Ordovician reservoir in Tuofutai area is located at southwestern Tahe oilfield. Structurally, it lies to the south of Akekule rise in the middle of the Shays uplift, Tarim Basin, which externally extends to southwest Tahe oilfield and far away from main block. Its formation depth, pressure and well temperature vary greatly. Meanwhile, the water-and-oil relationship is complicated. In order to increase fluid efficiency and stimulation intensity, it is proposed to plug the lower reservoir with cement plug and to acid fracture the upper primary pay-zone. Through optimizing technology, the acid-etched fracture length and acid penetration depth are increased by fracturing fluid and acid fracturing with viscosified acid. The fractures connectivity may be enhanced by viscosified acid with properties such as low friction, low filtration, retarding performance and acid fluid diverting.

关 键 词：塔河油田 托甫台 深度酸压 变粘酸 

分 类 号：P618.13[天文地球—矿床学]