Equivalent external casing pressure in rheological strata

doi:10.7623/syxb201204025

Editorial office of ACTA PETROLEI SINICA ›› 2012, Vol. 33 ›› Issue (4): 702-705.DOI: 10.7623/syxb201204025

• Petroleum Exploration • Previous Articles Next Articles

Equivalent external casing pressure in rheological strata

CHEN Zhaowei 1,2

Received:2011-11-23 Revised:2012-06-26 Online:2012-07-25 Published:2012-08-01

流变性地层套管等效外挤力

陈朝伟　1,2

1　中国石油集团钻井工程技术研究院　北京　100195；　2　中国石油塔里木油田公司　新疆库尔勒　841000

通讯作者: 陈朝伟
作者简介:陈朝伟，男，1979年7月生，2007年获北京大学固体地球物理学专业博士学位，现为中国石油集团钻井工程技术研究院高级工程师，主要从事石油工程岩石力学研究。
基金资助:
国家重大科技专项“钻井工程设计和工艺软件”（2011ZX05021-006）资助。

Abstract

Abstract:

In order to provide a theoretical basis for the casing design of rheological strata,we examined three models of equivalent external casing pressure,one is from the current standard and the other two are the viscoelastic fluid model and viscoelastic solid model,respectively. Based on the calculation results of field example by these three models,we concluded that compared with the real data of case studies,the model from current standard and the viscoelastic fluid model gave the equivalent external pressure considerably lower,while the equivalent external pressure derived from the viscoelastic solid model fitted the actual field situation very well.

Key words: rheological property, casing deformation, casing strength calibration, crustal stress, equivalent external pressure

摘要：

为给流变性地层套管设计提供理论依据，讨论了3种套管等效外挤力模型，其一是现行标准中的模型，另外两个分别是黏弹性流体模型和黏弹性固体模型。利用具体实例对这3个模型的比较分析结果表明，现行标准和黏弹性流体等效外挤力模型计算结果偏小，而黏弹性固体等效外挤力模型与现场实际情况符合较好。

关键词: 流变性, 套管变形, 套管强度校核, 地应力, 等效外挤力

CHEN Zhaowei. Equivalent external casing pressure in rheological strata[J]. Editorial office of ACTA PETROLEI SINICA, 2012, 33(4): 702-705.

陈朝伟. 流变性地层套管等效外挤力[J]. 石油学报, 2012, 33(4): 702-705.

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Equivalent external casing pressure in rheological strata

流变性地层套管等效外挤力

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