井口水平移位优化新方法  

OPTIMIZATION METHOD OF WELLHEAD HORIZONTAL SHIFT

作　　者：陈岩[1] 王新海[1] 白登相[2] 余纲[2] 王彦秋[2] 李若竹[2] 张磊[2] 

机构地区：[1]长江大学油气资源与勘探技术教育部重点实验室 [2]塔里木油田公司

出　　处：《钻采工艺》2016年第1期16-18,6-7,共3页Drilling & Production Technology

基　　金：国家重大专项"低渗;特低渗油藏相对高产富集区地质控制因素研究"(2011ZX05013);国家重大专项"低渗透油气田高效开发钻井技术"课题四"低渗油气田储层保护技术"(2011ZX05022-004);长大青年基金:(2015cqn77)"裂缝性砂岩气藏裂缝对渗透率与表皮系数作用机理研究"

摘　　要：在钻井过程中,地质中靶对石油开发意义重大。为了提高钻井中靶成功率,首先利用统计学方法确定井口偏移方向,找出自然漂移规律,其次根据已完钻井地质靶点和实际井口位置分布情况,将"实际井口位置和移位之后的位置之差的平方和最小"条件作为确定井口移位的指标(目标函数),建立了井口水平移位优化数学规划模型,并利用拟牛顿算法对模型进行了求解。以哈拉哈塘为例分析表明,所建立的模型及拟牛顿求解方法能够优选出井口在水平方向的位移,可有效解决待钻井地质中靶问题,对实际钻井和井口选址有一定的指导意义。During drilling,target of geology for oil development is very important. In order to improve the success rate of the drilling of the target,the first is to use statistical methods to determine the offset direction of wellhead and identify natural drift law. Secondly,based on geological target of well drilled and the actual location distribution of the wellhead,taking 'the minimum sum of the squares of the difference between actual well locations and the position shifted'as the condition indicators for determining the displacement Iguchi( objective function),to establish the level of the wellhead shift optimization mathematical programming model,which is solved by using quasi- Newton algorithm model. In case of Halahatang,analysis showed that the model and the quasi- Newton method can preferred the wellhead shift in horizontal direction,can be an effective solution to the problem of target geological well drilling,which has a certain guiding significance to drilling and well placement.

关 键 词：井口移位 地质中靶 拟牛顿法 

分 类 号：TE242[石油与天然气工程—油气井工程]