石油钻采工艺2016，Vol.38Issue(4)：422-426,5.DOI:10.13639/j.odpt.2016.04.003
基于点源的救援井探测模型分析与仿真
Analysis and simulation of relief well detection model based on point source
摘要
Abstract
Drilling relief well is an effective way to control blowout at present. To study electromagnetic detection for relief wells, by using well-ground current injection method, the relief well detection model based on point source has been built, finite element software has been used to analyze impacts of electrode arrangement, current size, the distance between blowout well and electrode, and casing length on density of aggregation current on casing in the well with incident. The research results show installation of ground electrodes on casing may facilitate current aggregation on casing of well with incident; the longer the distance between electrode and casing, the lower the density of aggregation current will be, in addition, the in-flow current and density of aggregation current on casing are in linear relationship; density of aggregation current increases with increase of casing length, but amplitude of such increase decreases with the increase of casing length. Relevant researches have verified effectiveness and applicability of the model for aggregation current on casing in wells with incident. The research results can provide a theoretical basis for developing tools detecting connectivity with the relief well.关键词
救援井/事故井套管/点电流源/汇聚电流密度/有限元软件Key words
relief well/casing in well with incident/point power source/aggregation current density/finite element software分类
能源科技引用本文复制引用
贾惠芹,刘容,刘美,李峰飞..基于点源的救援井探测模型分析与仿真[J].石油钻采工艺,2016,38(4):422-426,5.基金项目
国家科技重大专项“深水钻完井技术”（编号2011ZX05026-001）的部分内容。陕西省工业科技攻关项目“非接触式过套管剩余油探测技术研究”（编号2016GY-177）。 （）
