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针对大厚段砂砾岩储层的水力压裂新方法
A novel technology of hydraulic fracturing for massive glutenite reservoirs
卢 聪 马 莅 郭建春
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作者单位:“油气藏地质及开发工程”国家重点实验室·西南石油大学
中文关键字: 大厚段储层 水力压裂 支撑剂 沉降输送 支撑裂缝形态
英文关键字:Massive reservoir; Hydraulic fracturing; Proppant; Settlement transport; Morphology of propped fracture
中文摘要:    针对砂砾岩大厚储层的开发,传统的笼统压裂经常导致支撑剂铺置效率低,产量递减快等问题。综合考虑支撑剂沉降平衡高度以及停泵后支撑剂运动对支撑剂输送的影响,建立支撑剂沉降运移模型,分析影响支撑剂铺置的主要因素,提出了一种新型的水力压裂技术。结果表明:①射孔位置和支撑剂密度是影响支撑裂缝形态以及支撑剂铺置形态的主要因素;②通过对大厚储层中的某一层段集中射孔可以调整支撑裂缝形态;③采用不同密度支撑剂,按照不同的加入顺序,可以调整支撑剂在大厚储层中的铺置剖面。结论认为:该技术可用于提高常规整体压裂方法中支撑剂的铺置效率。
英文摘要:    Traditional fracturing methods to develop some massive glutenite reservoirs may lead to low efficiency of proppant placement and high rate of production decline. So, one model of proppant settlement transport was established, which takes comprehensive consideration on the influence of settlement equilibrium height and proppant motion after pump stop on its transport. Furthermore, the main factors affecting proppant placement were analyzed, and a novel technology of hydraulic fracturing was proposed. Results
show that (1) both perforation position and proppant density are the main factors affecting the morphology of propped fracture and the placement form of proppant; (2) the morphology can be adjusted by conducting the centralized perforation in one certain interval of massive reservoirs; and (3) the proppant placement profile in these reservoirs can be adjusted by sequential adding proppant with different density. It's concluded that this technology can be used to improve the efficiency of proppant placement for those conventional fracturing methods.
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国内统一连续出版物号:CN51-1159/TE |国内发行代码: |国际标准出版物号:ISSN1673-3177 |国际发行代码:
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