高压异常地层局部双层组合套管的设计与应用  

Design and Application of Local Double-layer Pattern Casing of Surpressure Formation

作　　者：李学忠[1] 刘积松[1] 董事尔[2] 

机构地区：[1]中原石油勘探局,河南省濮阳市457001 [2]西南石油学院

出　　处：《断块油气田》1997年第5期42-46,共5页Fault-Block Oil & Gas Field

摘　　要：中原油田的套管损坏问题，在全国各油田中是较为严重的，影响了中原油田稳定的战略目标。为此，中原石油勘探局与西南石油学院合作，开展了近1a多的联合攻关研究，在盐层高压的形成机理、超高压地层套管外挤力计算、局部双层组合套管的设计及套管寿命预测方法研究等方面，理论上获得重大突破。本文详细介绍了局部双层套管的强度理论、方案设计与优选、经济效益评估及施工工艺。结果表明，局部双层组合套管是解决中原油田盐层套管变形的最优方案。Casing failure in Zhongyuan Oil Field is very severe and influences the strategic object of stable oil production in Zhongyuan Oil Field. Over one year,both Zhongyuan Petroleum Exploration Bureau and Southwest Petroleum Institute have analyzed cooperetively this subject from the mechanism of salt-stratum surpressure formation,study of outer collapsing strength of casing in surpressure formation to the design of local double-layer combined casing and forecasting procedure of casing life,and achieve a preliminary solution in theory. The paper presents in detail the strength theory of local double-layer casing,its optimum design,economic effect evaluation and construction technique. It shows that local double-layer pattern casing is the optimizing method to solve casing failure in Zhongyuan Oil Field.

关 键 词：高压 套管 地层 抗压强度 双层组合套管 设计 

分 类 号：TE931.202[石油与天然气工程—石油机械设备]