致密油直井大规模压裂井卡管柱原因分析及对策研究  

Analysis and Countermeasures of Pipe String Stuck in Tight-oil Large Scale Fracturing Vertical Wells

作　　者：许红丽 Xu Hongli(No.1 Oil Production Plant of Daqing Oilfield Limited Company)

机构地区：[1]大庆油田有限责任公司第一采油厂

出　　处：《采油工程》2024年第3期6-10,89-90,共7页Oil Production Engineering

摘　　要：压裂时管柱遇卡无法顺利起出导致延误油水井及时排液投产,影响压裂措施效果。如采用大修作业处理将延长作业时间、增加作业成本。因此,针对致密油直井大规模压裂管柱遇卡这一问题,开展原因分析及治理措施研究。对X、Y等4个区块部分施工井进行大数据统计分析,识别出压裂遇卡井特征因素,同时对已遇卡管柱井修井结果进行剖析,明确出砂卡井主要原因。通过对压裂工具质量、地层参数、压裂支撑剂、现场施工质量控制4方面进行统计分析,确定压裂封隔器性能和级数是影响压裂管柱安全起出的主要因素,并提出了优化压裂工艺及工具的同时要做好压裂前后的施工管理工作,有效降低压裂卡管柱井比例,避免影响压裂效果,为油田压裂井安全高效施工提供技术支持。During the course of hydraulic fracturing,if the pipe string gets stuck and can't be pulled out smoothly,it will delay the drainage and production in producers and injectors,affecting the effectiveness of fracturing.If workover operation is carried out,it will prolong the operation time and increase the operation cost.Therefore,in order to solve the problem of pipe string stuck in tight-oil large-scale fracturing vertical wells,the analysis and countermeasures research were carried out,and big data statistical analysis was conducted on some operation wells in X,Yand other two blocks,so as to identify the characteristic factors in the pipe string stuck wells during fracturing operation.At the same time,the analysis of the workover results for the pipe string stuck wells was conducted to identify the main reasons of the sand producing stuck wells.Statistical analysis was conducted on four aspects,including the quality of fracturing tools,formation parameters,fracturing proppants,and on-site operation quality control.It has been determined that the performance and stage of the fracturing packers are the main factors affecting the safe pulling of the fracturing string.It was proposed to optimize the fracturing process and tools while ensuring the proper operation management before and after fracturing.This new technology effectively reduces the proportion of pipe string stuck in fracturing wells,avoids the impact on fracturing effectiveness,and provides the technical support for safe and efficient operation for fracturing wells in oilfield.

关 键 词：压裂 封隔器 卡管柱 致密油 暂堵 

分 类 号：TE358[石油与天然气工程—油气田开发工程]