摘要
水平井压裂段返排率是压裂效果评价的重要指标,目前各段返排分析主要采用示踪剂法,但示踪剂在储层中的分布范围、浓度变化、不均衡取样可能是该方法较大的误差来源。针对此问题,利用原始地温、水平井返排阶段某一时间节点的地温和施工井各段压裂液注入量、单井返排总量反向建模推算出压后初期理论地温,成功实现了水平井各压裂段返排率的估算,为评价储层压裂改造效果增添了一种新方法。
The flowback rate of horizontal well fracturing stage is an important index to evaluate fracturing effect.At present,tracer method is mainly used for flowback analysis of each stage,but the distribution range,concentration change and unbalanced sampling of tracer in the reservoir may be the major sources of error in this method.In this paper,the initial theoretical ground temperature after pressure is calculated by using the reverse modeling of the original ground temperature,the ground temperature of a certain node at a certain time in the horizontal well flowback stage,and the total flowback amount of a single well.The flowback rate of each fracturing stage of the horizontal well is successfully estimated,which adds a new method for evaluating the effect of reservoir fracturing reform.
作者
陈川
张贝贝
张文婷
张史彤
Chen Chuan;Zhang Beibei;Zhang Wenting;Zhang Shitong(Sichuan Andong Oil and Gas Engineering Technology Service Co.,LTD.,Suining 629000;Andong Geological Engineering Technology Institute(Beijing)Co.,LTD.,Beijing 100000)
出处
《石化技术》
CAS
2024年第8期83-85,共3页
Petrochemical Industry Technology
关键词
水平井
光纤监测
压裂
返排率
Horizontal well
Optical fiber monitoring
Fracturing
Flow back rate
