【摘要】 安塞油田属于特低渗透油藏,油层经压裂方可出油。研究压裂缝形态,对于最大限度地挖潜油层潜力以及提高油井单井产能,具有重要的意义。本文通过井下微地震、地面微地震、正交偶极声波测井及数值模拟等四种监测方式对比,重点剖析了压裂缝缝高的特点。认为压裂缝缝高随着缝长的延伸呈衰减规律,近井地带缝高为15 m~20 m,油层内部缝高为5 m~10 m,至缝长的末端,缝高值较小,直至衰减为0 m。针对这一现象,可以采取混合水体积压裂和单砂体补孔压裂措施,改善油藏开发效果。更多还原

【Abstract】 Ansai oilfield is an extra low permeability reservoir, the reservoir by fracturing can be out of oil. Study on the fracture morphology has important significance to maximum excavate reservoir potential and improve the oil production of single well. By comparing the underground microseismic, ground microseismic, cross dipole acoustic logging and numerical simulation, this article analyzes the characteristics of fracturing height. Think of fracturing height is attenuation with the extend of crack length. The fracturing height near wellbore is15 m~20 m, the reservoir internal is 5 m~10 m, the end of fracturing length is smaller, until the attenuation of 0 m. In view of this phenomenon, we can adopt the mixed water volume fracture and single sandbody reperforating fracture to improve the effect of reservoir development.更多还原