丛式井钻头距邻井井筒距离的计算模型  

Calculation Model of Cluster Well Drilling Bit-Adjacent Well Distance

作　　者：刘刚[1] 刘华亮[1] 何保生 耿站力 刘鹏涛[1] 

机构地区：[1]中国石油大学(华东)石油工程学院 [2]中海油研究总院开发研究院

出　　处：《石油机械》2013年第10期46-50,共5页China Petroleum Machinery

基　　金："十一五"国家科技重大专项"海上油田丛式井网整体加密及综合调整技术"之子课题"定向井防碰地面监测及预警系统研究"(2008ZX05024-004-006);"十二五"国家科技重大专项"海上油田丛式井网整体加密及综合调整技术"之子课题"海上油田丛式井网整体加密调整多平台钻井趋近井筒监测方法研究"(2011ZX05024-002-010)

摘　　要：根据振动弹性波的球面扩散和吸收衰减理论,结合振动波在地层和套管中的传播特性,在一定假设的基础上,建立了基于振动信号检测钻头距邻井井筒距离的计算模型。分析认为,在浅层井段,当井斜角和方位角变化不大时,PDC钻头和牙轮钻头距邻井井筒距离模型具有相同的形式。利用江苏油田陈3-105井实时采集的数据对所建PDC钻头距邻井井筒距离的计算模型进行验证。结果表明,对于井间距离在10 m之内的监测井段,所建模型可较准确地预测钻头趋近趋势。According to the theory of spherical diffusion and absorptive attenuation of vibration elastic wave, the calculation model based on vibration signal inspection bit-adjacent well distance was derived and established on the basis of some hypothesis referring to the transmission characteristic of vibration waves in formation and casing. The established model thinks that in shallow layer well-section, when hole angle and azimuth angle are not large, the models for PDC bit and roller bit-adjacent well distance have the same form. The real-time data collected in Well 3 - 105 of Chen in Jiangsu Oilfield was used to verify the calculation model of PDC bit-adjacent well distance. The verification shows that as for the monitoring well-section with less than 10 m inter-well distance, the established model can precisely predict the bit＇s approaching trend.

关 键 词：丛式井 防碰 井筒距离 振动波 球面扩散 吸收衰减 计算模型 

分 类 号：TE243[石油与天然气工程—油气井工程]