CAJ | 학술논문

淮北某煤矿采区三维地震勘探地质条件极为复杂,区内褶皱、断层构造发育,常规叠后时间偏移处理很难准确成像,给后期资料解释工作带来不利影响.针对这一问题,采用叠前时间偏移技术,结合煤田地震勘探特点,对影响叠前偏移处理质量的关键步骤(预处理、静校正、叠前去噪、时间域速度模型建立)进行了研究,取得了显著效果.利用叠前偏移数据体解释,最终圆满完成了地质任务.本文通过应用实例,说明了煤田地震勘探资料处理利用叠前时间偏移技术对复杂构造成像效果较好,信噪比提高,断点解释更可靠.
회북모매광채구삼유지진감탐지질조건겁위복잡,구내습추、단층구조발육,상규첩후시간편이처리흔난준학성상,급후기자료해석공작대래불리영향.침대저일문제,채용첩전시간편이기술,결합매전지진감탐특점,대영향첩전편이처리질량적관건보취(예처리、정교정、첩전거조、시간역속도모형건립)진행료연구,취득료현저효과.이용첩전편이수거체해석,최종원만완성료지질임무.본문통과응용실례,설명료매전지진감탐자료처리이용첩전시간편이기술대복잡구조성상효과교호,신조비제고,단점해석경가고.
The geological conditions of 3D seismic exploration of a coal mine in Huaibei is complex,SO conventional poststaek time migration is difficult to get true images,that can bring adverse effects to seismic data interpretation. Using prestack time migration technology,combined with characteristics of coal field seismic exploration,we have stutied the key steps(pretreatment,static correction,prestack seismic data denoising,built velocity model of time domain)which impact quality of prestack time migration,and achieved remarkable results.Using pre-stack migration data to interpret,we have successfully completed the task of the geological task finally.The practical application shows that using pre-stack time migration technology is beneficial to complex structure imaging,can improve signal to noise ratio,and make it more reliable to interpret fault-points.