REDUCTION OF GAS AND WATER PERMEABILITIES USING GELS

被引：50

作者：

SERIGHT, RS

机构：

来源：

SPE PRODUCTION & FACILITIES | 1995年 / 10卷 / 02期

关键词：

D O I：

10.2118/25855-PA

中图分类号：

TE [石油、天然气工业];

学科分类号：

0820 ;

摘要：

We investigated how different types of gels reduce permeability to water and gases in porous rock. Five types of gels were studied, including (1) a ''weak'' resorcinol-formaldehyde gel, (2) a ''strong'' resorcinol-formaldehyde gel, (3) a Cr(III)-xanthan gel, (4) a Cr(III)-acetate-HPAM gel, and (5) a colloidal-silica gel. For all gels, extensive coreflood experiments were performed to assess the permeability-reduction characteristics and the stability to repeated water-alternating-gas (WAG) cycles. Studies were performed at pressures up to 1,500 psi using either nitrogen or carbon dioxide as the compressed gas. We developed a coreflood apparatus with an inline high-pressure spectrophotometer that allowed tracer studies to be performed without depressurizing the core. We noted several analogies between the results reported here and those observed during a parallel study of the effects of gel on oil and water permeabilities.

引用

页码：103 / 108

页数：6