大规模压裂水平井压裂液返排方法探讨  

Discussed on Flow-Back Method for Fracturing Fluid of Large-Scale Fracturing Horizontal Well

作　　者：宋微立[1] 

机构地区：[1]大庆油田有限责任公司勘探事业部,黑龙江大庆163453

出　　处：《油气井测试》2013年第4期37-39,76,共3页Well Testing

摘　　要：水力压裂是油、气藏增产最有效的措施之一,压裂液的返排与增产效果关系密切。低渗透油层超长水平井多级压裂,压裂液用量大,采用单一油嘴控制放喷返排,已经不能满足精细施工的需要。针对大规模压裂水平井的压裂液返排,建立了不同油嘴下压力对应产量和临界流量的计算公式,采用系列尺寸的油嘴控制压后放喷,达到提高一次返排率、提高压后产能、防止支撑剂回流的目的。Hydraulic fracturing in oil and gas reservoiris one of the most effective measures to increase production,fracturing fluid flow-back and closely related to increase yield.Horizontal Wells in low permeability reservoir super-long multi-stage fracturing,fracturing fluid amount is big,controlled by a single nozzle choke flow-back,already cannot satisfy the needs of delicate construction.Based on largescale fracturing of horizontal well fracturing fluid flow-back,set up under different nozzle pressure corresponding to the yield and the calculation formula of the critical flow rate,the choke,after a series of the size of the nozzle control pressure to improve after a flowback rate,improve the purpose of production capacity,to prevent the backflow of proppant.

关 键 词：油嘴 压裂液 返排 控制放喷 

分 类 号：TE357[石油与天然气工程—油气田开发工程]