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首页> 外文会议>SPE/DOE symposium on improved oil recovery >Water shutoff in extremely hostile environment: an experimental approach in geologically complex, gas condensate reservoirs using cross-linked gels
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Water shutoff in extremely hostile environment: an experimental approach in geologically complex, gas condensate reservoirs using cross-linked gels

机译：在极端不利环境中的堵水：使用交联凝胶在地质复杂的天然气凝析气藏中进行实验的方法

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摘要

Based on case history and laboratory research, this paper documents the efforts made to date to solve the problem of excess water production in the large gas condensate fields located in the southwestern part of Pannonian Bsin-Croatia. According to laboratory studies, a polymer-gel system could be an applicable method to shut off water productionin reservoirs characterized as extremely hostile (ultra-high downhole temperature, geologically compex payzone and sour gas, rich with CO_2). Phenol-formaldehyde crosslinked gels appear to be the most promising for use under such harsh conditions. Long-term stability during in vitro tests, and selective rock permeability reduction during in vitro tests, and selective rock permeability reduction during core flooding tests have been achieved at 180 degree. The problem of retarding the gelation time at reservoir conditions has to be further investigated prior to performing the water shutoff treatment on a candidate gas condensate production well.
机译：基于案例历史和实验室研究，本文记录了迄今为止为解决位于Pannonian Bsin-Croatia西南部的大型凝析气田中过量产水问题而做出的努力。根据实验室研究，聚合物-凝胶系统可能是一种可用于关闭储集层的水生产方法，该储集层具有极强的敌意性（井下温度超高，地质上复杂的成矿带和酸性气体，富含CO_2）。在如此恶劣的条件下，酚醛甲醛交联凝胶似乎是最有前途的。体外测试的长期稳定性，体外测试的选择性岩石渗透率降低以及岩心驱替测试的选择性岩石渗透率降低已达到180度。在储层条件下延迟胶凝时间的问题必须在对候选凝析气生产井进行堵水处理之前进一步研究。

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