王立军;吕波;吴锋;邵振军;杨敏;

• 1:大庆石油学院提高采收率教育部重点实验室,大庆石油学院提高采收率教育部重点实验室,大庆油田有限责任公司第七采油厂,大庆油田有限责任公司第四采油厂,中国石油塔里木油田分公司勘探开发研究院 黑龙江大庆163318,黑龙江大庆163318,黑龙江大庆163517,黑龙江大庆163511,新疆库尔勒841000

摘要：

运用既考虑地层因数,又考虑地层孔隙压力、岩石抗张强度及上覆岩压力计算地层破裂压力的计算模型,对葡北二断块套损区注水井的地层破裂压力进行了预测.结果表明,该方法计算注水井地层破裂压力与实际测得的地层破裂压力差异较小,并优于矿场普遍采用的只考虑上覆岩压力计算地层破裂压力的方法;同时在计算过程中,还提出了在缺少密度测井曲线的情况下,经过反演得到计算上覆岩压的方法,应用实例证明该方法可行.

关键词： 注水井;套损;地层破裂压力;密度测井;抗张强度

Abstract: The calculation model has been applied in which not only formation factors but also formation pressure, the rock tensile strength and overburdened pressure are considered, the formation fracture pressure of water injection wells is predicted in casing damage area of No.2 Block of Pubei. The result indicates that the formation fracture pressure, calculated by the above mentioned method, is similar to the real prediction results, and this method is preferable to the conventional one that only considers the overburdened pressure on the field. Furthermore, in the calculating process, the overburden pressure is inversely worked out as well when there is no density logging curves. The above mentioned method is testified to be feasible.

Keywords: water injection well; casing damage; fracture pressure; density logging; tensile strength

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参考文献：

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