Failure behaviour wellbore cement in the presence of water and supercritical CO2

被引：28

作者：

Liteanu, Emilia ^{[1
]}

Spiers, Christopher J. ^{[1
]}

Peach, Colin J. ^{[1
]}

机构：

[1] Univ Utrecht, Fac Geosci, HPT Lab, NL-3584 CD Utrecht, Netherlands

来源：

GREENHOUSE GAS CONTROL TECHNOLOGIES 9 | 2009年 / 1卷 / 01期

关键词：

Wellbore integrity; CO2; storage; cement; failure envelope; STRENGTH;

D O I：

10.1016/j.egypro.2009.02.149

中图分类号：

TE [石油、天然气工业]; TK [能源与动力工程];

学科分类号：

0807 ; 0820 ;

摘要：

The presence of numerous abandoned wells in depleted oil and gas reservoirs might provide leakage paths thus compromising the integrity of long-term CO2 storage. However little data is available on the effect of CO2-saturated solutions on the failure behaviour of wellbore cement. Therefore, we performed triaxial compression experiments to study the effect of CO2 on the failure behaviour of Portland cement at reservoir conditions (T= 80 degrees C, Pc = 1.5 to 30 MPa). Weakening of the cement was observed due to injection of aqueous fluid, whereas addition of CO2 did not further reduce the mechanical strength of the material. (C) 2008 Elsevier Ltd. All rights reserved

引用

页码：3553 / 3560

页数：8

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