Performance Evaluation and Field Application of a Self-Suspending Proppant
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摘要: 为解决常规压裂液存在的压裂施工配液流程复杂、冻胶残渣对地层伤害大的问题，以陶粒砂、速溶液体改造剂和高分子聚合物为原料制备了自悬浮支撑剂，对其综合性能进行了室内试验评价，并研究形成了自悬浮支撑剂施工工艺。通过室内评价试验可知，自悬浮支撑剂悬浮形成时间短，具有良好的悬浮稳定性能、耐温耐剪切性能、破胶性能和低伤害特性。自悬浮支撑剂在5口井的清水压裂中进行了现场应用，简化了压裂施工流程，施工成功率100%。其中，X-1井压裂施工顺利，压裂后的日产油量是采用常规压裂液的邻井X-2井的2倍多，增产效果显著。室内试验与现场应用结果表明，自悬浮支撑剂能够达到简化施工流程、降低对储层的伤害和提高油气产量的目的，具有良好的推广应用前景。Abstract: When conventional fracturing fluid is used for fracturing,the fluid preparation process is complex,and the formation damage caused by gel residue is serious.In order to solve these problems,a self-suspending proppant has been developed with ceramic sand,instant solution modifier and polymer,and evaluated its comprehensive performance,by which the operation technology of self-suspending proppant was developed.The evaluation results showed that the proppant had such characteristics as short suspending forming time,good suspension stability,temperature and shear resistance,good gel breaking performance and low damage.The field application of the proppant was conducted in well X-1 of an oilfield,the fracturing occurred smoothly,the preparing time of fracturing fluid was short.Significantly,the post-fracturing daily oil production was 2 times higher than that of the offset well X-2 which was stimulated with the conventional fracturing,with remarkable effect in production increase.The results of lab and field tests showed that the self-suspending proppant can achieve the purposes of simplifying fluid preparing process,reducing reservoir damage and raising oil and gas production,with good prospect of popularization and application.
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Keywords:
- fracturing fluid /
- self-suspending proppant /
- performance test /
- field application
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