摘要
四川盆地涪陵页岩气田属国家级页岩气示范区,是全球除北美以外最大的商业开发页岩气田,基于"井工厂"模式下的压裂工艺已得到了广泛应用,但如何有效评价同平台多井次间的"井工厂"压裂效果及此模式下的缝网展布规律仍需进一步研究。为此,通过利用地面及井中微地震联合监测技术,对焦页4X平台"井工厂"压裂裂缝进行实时监测,初步了解了涪陵页岩气田焦石坝区块"井工厂"压裂模式下的人工裂缝几何尺寸、展布方向;同时利用联合微地震技术的综合解释成果,结合压裂SRV预测图版,对井工厂压裂工况下的压裂参数进行了重新认识,准确了解到涪陵气田页岩气"井工厂拉链式"压裂过程中的人工裂缝展布情况。该项研究成果对后期压裂参数的优化具有重要的指导意义。
The Fuling shale gas field in the Sichuan Basin, as a national shale gas demonstration area, is the largest commercially devel- oped shale gas field in the world except those in North America. The fracturing technology in the mode of ＂well factory＂ has been applied widely in the gas field, but it is necessary to perform further investigation on the way to evaluate effectively the fracturing effect of multi- well platform ＂well factory＂ and the distribution laws of its induced fracture networks. In this paper, the fractures induced by the ＂well factory＂ at the Jiaoye 4X platform were real-time monitored by a surface-downhole combined microseismic monitoring technology. The geometric size and extension direction of artificial fractures induced in the model of ＂well factory＂ fracturing in the Jiaoshiba block of Fuling Shale Gas Field were preliminarily understood. Moreover, the fracturing parameters under the mode of ＂well factory＂ were rec- ognized by using the comprehensive interpretation results of surface-downhole combined microseismic monitoring technology, together with the SR V fracturing prediction chart. Eventually, the distribution laws of artificial fractures during the ＂well-factory-zipper＂ fracturing in the Fuling Shale Gas Field were clarified definitely. This paper provides guidance for the optimization of fracturing parameters at the later stage.
出处
《天然气工业》
EI
CAS
CSCD
北大核心
2016年第10期56-62,共7页
Natural Gas Industry
基金
中国石油化工股份有限公司重点科技项目"涪陵区块页岩气层改造技术研究"(编号:P14092)
中国石油化工股份有限公司重点科技项目"涪陵区块页岩油气有效开发技术研究"(编号:P13053)
关键词
四川盆地
涪陵页岩气田
井工厂
压裂(岩石)
地面微地震
井中微地震
SRV预测
人工裂缝
Sichuan Basin
Fuling shale gas field
Well factory
Fracturing （rock）
Surface microseismic
Downhole microseismic
SRV prediction
Artificial fracture
