CBMT测井数值模拟及水泥环第二界面成像  

Numerical simulation of CBMT logging and imaging of the second interface

作　　者：钱玉萍[1] 王文文 林龙生[1] 张宏伟 侯振学[1] 成家杰[1] QIAN Yuping;WANG Wenwen;LIN Longsheng;ZHANG Hongwei;HOU Zhenxue;CHENG Jiajie(Oilfield Technology Department,China Oilfield Services Limited,Langfang 065201,China;China United Coalbed Methane Co.,Ltd.,Beijing 100016,China)

机构地区：[1]中海油田服务股份有限公司油田技术事业部,廊坊065201 [2]中联煤层气有限责任公司,北京100016

出　　处：《应用声学》2021年第4期562-568,共7页Journal of Applied Acoustics

摘　　要：目前针对第一界面的固井质量评价技术已经很成熟,但第二界面固井质量评价仍存在很多问题。该文在中海油服自主研发的扇区水泥胶结成像测井仪器CBMT基础上,采用反褶积等算法,对数值模拟的CBMT仪器贴井壁测量的全波波形进行水泥环第二界面成像处理,并分析第一界面、第二界面不同胶结情况下的成像效果。通过成像分析得出,在水泥环第一界面胶结良好时,可以对水泥环第二界面胶结状况较好的成像;在水泥环第一界面胶结差时,是很难对水泥环第二界面胶结状况进行评价的。At present,the cementing quality evaluation technology for the first interface is very mature,but there are still many problems in the cementing quality evaluation for the second interface.In this paper,based on the instrument CBMT(Cement bond mappting tool)developed by COSL,using deconvolution and other algorithms,the second interface imaging processing is carried out on the full waveform of numerical simulation,and the imaging effects of the first interface and the second interface under different cementing conditions are analyzed.Through imaging analysis,it is concluded that when the first interface of the cement ring is well cemented,the second interface of the cement ring can be well imaged.It is difficult to evaluate the cementing condition of the second interface of cement ring when the first interface of cement ring is poorly cemented.

关 键 词：油气井声学检测 固井质量 水泥环胶结 正演计算 

分 类 号：TE19[石油与天然气工程—油气勘探]