公开(公告)号：US3858037A

公开(公告)日：1974-12-31

申请号：US32461973

申请日：1973-01-18

申请人： SCHLUMBERGER TECHNOLOGY CORP

发明人： MOORE D ,  TITTMAN J

IPC分类号： G01V5/12 ,  G01T1/16

CPC分类号： G01V5/12

摘要： A specific embodiment of the invention provides a technique for identifying the mineral composition of an earth formation masked by a barite mudcake. The gamma radiation intensities on both sides of the K absorption limit for the barium in the mudcake are contracted with a normalized gamma radiation spectrum of the formation. The contrast indicates the nature of the mineral composition and some characteristics of the mudcake.

摘要翻译： 本发明的具体实施方案提供了用于鉴定被重晶石泥饼掩蔽的地层的矿物组成的技术。 泥饼中钡的K吸收极限两侧的伽马辐射强度与地层的归一化伽马辐射光谱收缩。 对比表明矿物组成的性质和泥饼的一些特征。