公开(公告)号：US5571962A

公开(公告)日：1996-11-05

申请号：US106368

申请日：1993-08-13

申请人： Daniel T. Georgi ,  Homer A. Robertson ,  Mark S. Franks

发明人： Daniel T. Georgi ,  Homer A. Robertson ,  Mark S. Franks

IPC分类号： E21B21/06 ,  E21B47/04 ,  E21B49/00

CPC分类号： E21B49/005 ,  E21B21/065 ,  E21B47/04

摘要： A method and apparatus for identifying cuttings from a wellbore is disclosed. The cuttings can be identified by measuring emissions such as alpha, beta, or gamma particles which emanate from the cuttings. A continuous wellbore profile of the alpha or beta emissions can be constructed by measuring the emissions from cuttings taken from different locations in the wellbore, and by documenting such emissions. The effects of cuttings dispersion caused by differing particle sizes can be reduced by collecting cuttings of an intermediate size for analysis. The profile of the intermediate size cuttings can be compared with a well log to identify the original elevation of the cuttings within the wellbore.

摘要翻译： 公开了一种用于从井眼识别切屑的方法和设备。 可以通过测量排放物来识别切屑，例如从切屑发出的α，β或γ粒子。 可以通过测量从井眼不同位置取得的切屑的排放量以及通过记录这种排放来构建α或β排放的连续井筒剖面。 通过收集用于分析的中等尺寸的切屑可以减少由不同粒径引起的切屑分散的影响。 可以将中等尺寸切屑的轮廓与井测井进行比较，以确定井眼内的切屑的原始高程。