论文部分内容阅读
合水地区致密油储量丰富,但储层物性差,渗透率小于0.3mD,地层压力系数低,常规压裂手段无法满足高效开发的要求;并且其储层发育天然裂缝,油井沿裂缝水窜、水淹现象较严重,注水开发有局限性。近年来,水平井体积压裂工艺技术的成功运用使得致密油气藏获得成功开发。本文阐述了水力泵送桥塞压裂工艺在合水致密油区的成功应用,评价了其应用效果,提高了压裂的效率,尤其适用于地处林缘区地形局限的合水油田,满足了长水平段水平井体积压裂准自然能量开发的要求,为进一步规模开发致密油积累了实践经验。
Heshui area is rich in tight oil reserves, but poor reservoir properties, permeability less than 0.3mD, formation pressure coefficient is low, conventional fracturing means can not meet the requirements of efficient development; and the development of natural reservoir fractures, wells along the water channeling, Water flooding is more serious, waterflooding has limitations. In recent years, the successful application of horizontal well volume fracturing technology has enabled the successful development of tight reservoirs. This paper describes the successful application of the hydraulic pump bridge plugging fracturing technology in the tight oil zone of the combined water, evaluates its application effect and improves the efficiency of fracturing, especially for the Heshui oilfield located in the marginal zone of the marginal zone The requirement of quasi-natural energy volume fracturing in long horizontal horizontal wells has accumulated practical experience for the further development of tight oil.