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首页> 外文会议>IADC/SPE International Drilling Conference and Exhibition >A Practical Methodology to Assess Casing Integrity and Service Life withSalt Collapse Loads in Unconventional Developments
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A Practical Methodology to Assess Casing Integrity and Service Life withSalt Collapse Loads in Unconventional Developments

机译：一种评估套管完整性和使用寿命的实用方法，在非常规发展中占据了折叠载荷

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摘要

Damage from salt stress is always an unwelcome occurrence in oil and gas wells; particularly inunconventional wells where productive longevity and slim cost to benefit margins are at risk. Many studieshave been conducted that offer fixes in the form of pat algorithms or universal design modifications. Theauthors believe that each field or well offers unique challenges. This paper will outline successful methodsfor estimating salt creep rate, estimates of damage from salt for a casing scheme and field conditions. Theseare used to determine the economic-driven optimum well designs and production practices for addressingsalt damage in both new wells and those already damaged. Further studies may allow these methods to beused in many other fields and wells. It is important to ascertain the local load paradigm for a specific field-development. To this end thespecific pipe manufacturing data was reviewed for as-built conditions. Also, the regional salt movementenvironment and salt creep rate were determined through review of field data from existing wells withissues. Standard casing design analysis was applied to determine the non-salt loading, temperature andpressure environments, and to eliminate non-salt loading as sole cause of damage. A first pass survey madeof the well population was conducted with several applied stress analytical methods such as Hackney forcombined salt and non-salt loads up to yield. A second pass on critical wells was performed with a finiteelement analysis (FEA) matched against published studies.
机译：盐胁迫的损伤总是油气井的不受欢迎存在;特别是在富有成效的良好井中，益于利润率的舒适性井有风险。许多研究都进行了以Pat算法或通用设计修改的形式提供修复。 Theauthors认为每个领域或良好都提供独特的挑战。本文将概述成功的方法来估算盐蠕变率，盐脉冲损伤的含量造成套管方案和现场条件。该目，用于确定经济驱动的最佳井设计和生产实践，用于解决这两种新井的损坏和已经损坏的良好损坏。进一步的研究可以允许这些方法在许多其他领域和井中被融合。要确定特定现场开发的本地负载范例非常重要。为此，对此结识的管道制造数据进行了综述。此外，区域盐运动环境和盐蠕变率是通过从现有井中的现场数据的审查来确定。施用标准套管设计分析以确定非盐负荷，温度和压力环境，并消除非盐负载作为唯一损坏原因。制造了井种制造的第一次传递调查，其中几种施加的应力分析方法，如哈克尼·替换盐和非盐负荷，以产生。对关键孔的第二次通过与符合公布的研究匹配的有限元分析（FEA）进行。

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