大庆油田葡南地区葡萄花油层裂缝定量预测

Quantitative prediction of fracture of Putaohua reservoir in Punan area of Daqing Oilfield

应用单井交叉式多极子阵列声波测井、岩心的差应变和声发射地应力测试资料对葡南地区的构造应力场进行了定量研究,并应用3DMove软件对该区储层裂缝进行了定量研究。古应力场研究表明,该区燕山晚期的构造应力场为近E—W向水平挤压应力为主,平均最大主应力值为58.4MPa;喜马拉雅期的构造应力场为NNE—SSW方向水平挤压应力,平均最大主应力值为48.1MPa;葡萄花油层现今最大水平地应力的范围在24～37MPa之间,最小水平地应力的范围在21.1～28.7MPa之间,最大主应力方向分别为NEE—SWW向。3DMove的裂缝预测和开启性研究表明,研究区裂缝发育呈近南北向条带状分布,裂缝主要分布在Pu381井—Ao356-67—Ao402-61一带、Ao344-14井区、M701井区、M6井区、M403-M405井区,裂缝发育方向以NNE、NWW两组;NE方向发育的裂缝开启性好于其他方向的裂缝;Pu381井区、Ao402-61井区及M403-M405井区以南区域裂缝开启性最好。预测的结果与实钻结果吻合较好。

Using data of single-well cross multi-pole sub-array acoustic logging,differential strain of core and acoustic-emitted ground stress test to carry out quantitative study of structural stress field in Punan area,and using 3D move software to carry out the quantitative study of fracture of reservoir in that area.It is shown by the study of palaeostress field that the structural stress field in the Later Yanshan period in the area mainly is near E-W horizontal compressive stress,and maximum dominant stress in ...