膨胀波纹管在大牛地气田定向井段的应用

发布时间：2018-06-22 01:19

本文选题：膨胀波纹管 + 膨胀试验　；参考：《石油钻探技术》2017年02期

【摘要】：为了将Φ149.2mm膨胀波纹管用于封隔大牛地气田定向井段易坍塌地层,采用有限元模拟和室内试验相结合的方法,分析了膨胀波纹管的外径、最大等效应力和最大等效塑性应变随井眼条件和膨胀压力变化的规律。室内研究结果表明,Φ149.2mm膨胀波纹管满足大牛地气田定向井段应用的要求。Φ149.2mm膨胀波纹管在大牛地气田PG22井和DPT-112井进行了应用,成功封隔了定向井段煤层和泥岩互层等复杂地层。其中,PG22井中封隔段长为109.00m,井斜角59.72°~73.69°。膨胀波纹管在大牛地气田定向井段的成功应用,表明膨胀波纹管具备封隔大斜度井中复杂地层的能力,为提高井下作业安全提供了一种新的技术手段。
[Abstract]:In order to use 桅 149.2mm expansion bellows in the collapsing formation of directional well section in spacer Daniudi gas field, the external diameter of expansion corrugated pipe is analyzed by combining finite element simulation and laboratory test. The variation of maximum equivalent stress and plastic strain with borehole condition and expansion pressure. The results of laboratory study show that 桅 149.2mm expansion bellows can meet the requirements of directional well application in Daniudi gas field. 桅 149.2mm expansion bellows have been applied in PG22 well and DPT-112 well of Daniudi gas field, which have successfully sealed the complex formations such as directional coal seam and mudstone interbed. Among them, the length of the middle sealing section in well GuanPG22 is 109.00 m, and the angle of the well is 59.72 掳(73.69 掳). The successful application of expansion bellows in directional wells in Daniudi gas field shows that the expansion bellows have the ability to seal complex formations in large deviated wells and provide a new technical means for improving the safety of downhole operations.
【作者单位】：中国地质大学(北京)工程技术学院;中国石化石油工程技术研究院;
【基金】：中国石化科技攻关项目“塔河油田深部复杂层段侧钻技术研究”(编号:P12072)部分研究内容
【分类号】：TE243

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