针对传统声波测井井下仪器声源没有指向性或无法控制声波信号辐射指向性的不足,研制了方位声波测井仪(AABT,Azimuthally Acoustic Bond Tool)。该仪器能够实现定向测量,评价第Ⅰ界面和第Ⅱ界面的固井质量情况,并具有较好的周向分辨特性...针对传统声波测井井下仪器声源没有指向性或无法控制声波信号辐射指向性的不足,研制了方位声波测井仪(AABT,Azimuthally Acoustic Bond Tool)。该仪器能够实现定向测量,评价第Ⅰ界面和第Ⅱ界面的固井质量情况,并具有较好的周向分辨特性,其周向分辨能力可达40°,具有好的一致性和准确性。该仪器与单极子、偶极子和四极子等声波测井声源相比,真正实现了周向扫描测量,在固井质量评价、非均质地层评价、定向射孔、定向钻井和井间地层评价等方面有良好的应用前景。介绍了AABT测井仪的电子系统设计方案。仪器由发射电子线路短节、主测控电子线路短节和声系组成。对仪器电子系统的主要构成模块、各部分的主要功能和关键技术进行了比较详细的分析,并给出了初步的现场试验结果。展开更多
We developed a novel cement evaluation logging tool,named the azimuthally acoustic bond tool（AABT）,which uses a phased-arc array transmitter with azimuthal detection capability.We combined numerical simulations and ...We developed a novel cement evaluation logging tool,named the azimuthally acoustic bond tool（AABT）,which uses a phased-arc array transmitter with azimuthal detection capability.We combined numerical simulations and field tests to verify the AABT tool.The numerical simulation results showed that the radiation direction of the subarray corresponding to the maximum amplitude of the first arrival matches the azimuth of the channeling when it is behind the casing.With larger channeling size in the circumferential direction,the amplitude difference of the casing wave at different azimuths becomes more evident.The test results showed that the AABT can accurately locate the casing collars and evaluate the cement bond quality with azimuthal resolution at the casing-cement interface,and can visualize the size,depth,and azimuth of channeling.In the case of good casingcement bonding,the AABT can further evaluate the cement bond quality at the cementformation interface with azimuthal resolution by using the amplitude map and the velocity of the formation wave.展开更多
文摘针对传统声波测井井下仪器声源没有指向性或无法控制声波信号辐射指向性的不足,研制了方位声波测井仪(AABT,Azimuthally Acoustic Bond Tool)。该仪器能够实现定向测量,评价第Ⅰ界面和第Ⅱ界面的固井质量情况,并具有较好的周向分辨特性,其周向分辨能力可达40°,具有好的一致性和准确性。该仪器与单极子、偶极子和四极子等声波测井声源相比,真正实现了周向扫描测量,在固井质量评价、非均质地层评价、定向射孔、定向钻井和井间地层评价等方面有良好的应用前景。介绍了AABT测井仪的电子系统设计方案。仪器由发射电子线路短节、主测控电子线路短节和声系组成。对仪器电子系统的主要构成模块、各部分的主要功能和关键技术进行了比较详细的分析,并给出了初步的现场试验结果。
基金supported by the National Natural Science Foundation of China(Nos.11204380,11374371,61102102,and11134011)National Science and Technology Major Project(No.2011ZX05020-009)+1 种基金China National Petroleum Corporation(Nos.2014B-4011,2014D-4105,and 2014A-3912)PetroChina Innovation Foundation(No.2014D-5006-0307)
文摘We developed a novel cement evaluation logging tool,named the azimuthally acoustic bond tool（AABT）,which uses a phased-arc array transmitter with azimuthal detection capability.We combined numerical simulations and field tests to verify the AABT tool.The numerical simulation results showed that the radiation direction of the subarray corresponding to the maximum amplitude of the first arrival matches the azimuth of the channeling when it is behind the casing.With larger channeling size in the circumferential direction,the amplitude difference of the casing wave at different azimuths becomes more evident.The test results showed that the AABT can accurately locate the casing collars and evaluate the cement bond quality with azimuthal resolution at the casing-cement interface,and can visualize the size,depth,and azimuth of channeling.In the case of good casingcement bonding,the AABT can further evaluate the cement bond quality at the cementformation interface with azimuthal resolution by using the amplitude map and the velocity of the formation wave.
