摘要
针对渤海油田随钻着陆过程中气油界面识别困难的问题,通过对大量录井资料的研究,形成了一套识别气油界面的气测录井方法。首先通过气测重组分变化趋势初步识别气油界面,然后用气测比率参数趋势法验证确认,最后选择合适的着陆点位置,地质导向水平井着陆。该技术方法2015-2016年在渤海油田7口水平井进行的应用表明,可为水平井随钻着陆决策提供有效的方法和依据,成功避免了水平井二次着陆,平均每口井节约作业时间12h,7口井共降本近百万元,取得了较好的经济效益。
Aiming at the difficulty of identifying gas-oil interface in landing while drilling Bohai Oilfield,a set of gas logging methods for identifying gas-oil interface was formed by studying a the large amount of mud logging data.First,the oilgas interface is identified by the change trend of gas logging heavy component.Then the trend method of gas logging ratio parameter is used to verify and validate.Finally,the appropriate landing point is selected and the geosteering horizontal well lands.The application of this technique in 7horizontal wells of Bohai Oilfield in 2015-2016 showed that it can provide effective methods and bases for the horizontal well landing decision while drilling and successfully avoiding the secondary landing of horizontal wells.The average operation time of each well saves 12 h,a total of nearly one million yuan was reduced for 7 wells,and good economic benefits have been obtained.
出处
《录井工程》
2017年第1期21-23,28,共4页
Mud Logging Engineering
关键词
气测录井
气油界面
随钻着陆
地质导向
gas logging
gas-oil interface
landing while drilling
geosteering
