井中微地震监测技术应用效果分析--以庄288区块为例

Application Effect Analysis of Borehole Microseismic Monitoring Technology-Taking Zhuang 288 Block as an Example

鄂尔多斯盆地庄288区块水平井自然产能较低,油藏开采难度大,为了实现油藏经济有效开发,重点改善储层渗透率,扩大泄流面积和渗流通道,需要对油井进行压裂施工改造。为精准评价其压裂效果,综合考虑仪器监测范围、经济价值和布设场地等方面因素,最终采用井中微地震监测技术。通过对庄288油藏F1和F2水平井压裂效果评价,准确刻画出压裂裂缝空间展布特征,并对后续水平井水力压裂的实时调整,结合生产资料分析,实时调整压裂后的水平井,提高了整体缝网的复杂程度,增强了油藏中流体的流动能力,采收率明显提高,研究成果为庄288区块油藏水平井的后续开发提供理论依据。

The natural productivity of horizontal wells in Zhuang 288 block of Ordos Basin is low,so it is difficult to develop the reservoir.In order to realize the economic and effective development of the reservoir,it is necessary to improve the reservoir permeability and expand the drainage area and seepage channel.In order to accurately evaluate the fracturing effect,considering the monitoring range,economic value and layout site of the instrument,the borehole microseismic monitoring technology is finally adopted.In this paper,through the evaluation of fracturing effect of F1 and F2 horizontal wells in Zhuang 288 reservoir,the space distribution characteristics of fracturing fractures are accurately depicted,and the real-time adjustment of hydraulic fracturing of subsequent horizontal wells is combined with the analysis of production data.The real-time adjustment of fractured horizontal wells improves the complexity of the overall fracture network,enhances the fluid flow ability of the reservoir,and significantly improves the oil recovery.The research results provide a theoretical basis for the follow-up development of horizontal wells in Zhuang 288 block.