CAJ | 학술논문

对于天然微裂缝比较发育，液体漏失严重的低渗透碳酸盐岩储层，酸液有效作用距离主要是受酸液滤失控制，但是由于酸的反应特性，酸液滤失相对于压裂液来说复杂得多，迄今为止尚未建立完善的酸液滤失模型，使得在制定施工方案时，难以科学确定酸压施工酸液用量。文章介绍了一种酸液动态滤失实验研究方法，分析了酸液滤失特征，通过对滤失实验数据的分析与处理，确定出"酸蚀蚓孔"形成时间，将其作为酸压施工注酸时间的参考值，从而避开复杂的酸液滤失计算，合理确定实施酸压作业的用酸量。将实验研究结果与现场酸压施工分析对比，结果证明具有较好的吻合性。
대우천연미렬봉비교발육，액체루실엄중적저삼투탄산염암저층，산액유효작용거리주요시수산액려실공제，단시유우산적반응특성，산액려실상대우압렬액래설복잡득다，흘금위지상미건립완선적산액려실모형，사득재제정시공방안시，난이과학학정산압시공산액용량。문장개소료일충산액동태려실실험연구방법，분석료산액려실특정，통과대려실실험수거적분석여처리，학정출"산식인공"형성시간，장기작위산압시공주산시간적삼고치，종이피개복잡적산액려실계산，합리학정실시산압작업적용산량。장실험연구결과여현장산압시공분석대비，결과증명구유교호적문합성。
The effective action radius of acidizing fluid is mainly controlled by its filter loss for the low-permeability carbonate reservoirs with relatively developed microfractures and serious fluid loss. However, the filter loss of acidizing fluid is much complex as compared with the fracturing fluid due to its specific reaction property,and a perfect model of the filter loss of acidizing fluid is not set up yet to this day, making the acid volume difficult to determine scientifically in drawing up an operation plan. In this paper,an experimental method for the dynamic filter loss of acidizing fluid is presented,the characteristics of the filter loss of acidizing fluid are analyzed and the forming time of "acid etched wormhole" is determined and taken as a reference to the acid-injected time in acidizing and fracturing operations through analysis and processing of the filter loss experiment data. Thus, the acid volume for acidizing and fracturing operations can be rationally determined, avoiding complex calculation for acidizing fluid loss. Through a comparative analysis of the experimental results with the site operation,it is proved that the results are well coincident.