油页岩层岩性特征及地应力与套损关系研究

在油田开发过程中,套管损坏的研究是一个重要问题。油页岩层是发生大面积套损的主要岩层。研究该岩层套损发生机理及影响因素显得尤为重要。通过开展油页岩层的岩性研究、岩体地应力方向研究,并应用测井解释成果确定套管损坏方位,指出了套损与地应力的关系并阐明了油页岩层的套管损坏机理。研究结果为油页岩部位套损井治理及预防提供了理论上的参考依据。

the Study of Relationship between Lithology Features and Geostress of Oil Shale Layer and Casing Damage

During the oil field development, casing damage is one of the major trouble. Because there is casing damage in the oil shale layer of many wells. It is particularly important for us to study the mechanisms and influencing factors about the casing damage of this layer. By conducting the study of oil shale lithology and the direction of geostress,determining the position by applying the interpretation results of well logging, we pointed out the relationship between casing damage and geostress and expounded the mechanism of the casing damage in oil shale layer. The research result provides the theoretical reference for controling and prevention the casings from damaging in oil shale layer.