微地震监测技术在暂堵压裂工艺中的应用  

Application of micro-seismic fracturing monitoring technology in temporary plugging and reoriented fracturing

作　　者：刘建升[1] 杨永刚[1] 张红岗[1] 李晓明[1] 南茜 海金龙[1] 

机构地区：[1]中国石油长庆油田分公司第三采油厂,宁夏银川750006

出　　处：《石油化工应用》2016年第8期68-73,共6页Petrochemical Industry Application

摘　　要：暂堵压裂工艺在三叠系油藏的推广试验已取得实际成效,但各实施区块尚未针对性开展井下裂缝监测以明确压裂裂缝是否转向,导致该工艺的实施缺乏一定的技术支持和依据。对此,2015年在具有代表性的D1油藏实施井中微地震裂缝监测5口,笔者通过对测试资料的分析,详细描述了压裂过程中裂缝产状、形态、走向等裂缝参数,明确了通过暂堵压裂工艺能够实现裂缝转向、开启地层微裂缝,验证了通过控制堵剂投加时机来优化主向缝延伸规模的设想,最后对升压幅度、泵注程序等工艺参数针对性的提出了优化方向。该研究成果使暂堵压裂工艺在三叠系油藏的设计思路得到实践证实,对同类油藏暂堵压裂设计及现场实施具有较好的指导意义。Temporary plugging and fracturing technology has achieved practical results in the Triassic reservoirs, but has not yet targeted implementation underground fracture monitoring to verify fracture shift, resulting in the lack of technical support and basis for the implementation of the process. In this regard, micro-seismic fracture monitoring was carried out 5well-times in D1 reservoir in 2015. Through the analysis of testing data, the author describes the fracture parameters detailedly, such as occurrence, shape, direction and etc, which cleared temporary plugging fracturing can realize the fracture orientation and open the formation micro cracks. Finally, the author put forward optimization direction of the pressor amplitude and pumping program. The results of this research make the design of temporary plugging fracturing technology have been proved by practice in the Triassic reservoirs, which has good directive significance to the field implementation of similar reservoirs.

关 键 词：暂堵压裂 微地震监测 工艺参数 裂缝形态 

分 类 号：TE357[石油与天然气工程—油气田开发工程]