Abstract:As constraint seismic processing while drilling (CSPWD) utilizes surface seismic for hydrocarbon production,it poses new challenges to data preparation timeliness and quality. Based on the analysis of CSPWD requirements and seismic data archiving,we propose in this paper an approach for seismic data archiving,data preparation,and quality control. The proposed seismic data preparation involves 3 types of migration datums,i.e. depth-domain common mid-point (CMP) datum,smoothed surface datum,and uniform datum. Data archiving strategy considers data preparation timeliness,data storage economy,and data generality which means that archived data can be directly processed not only by Kirchoff prestack time migration (PSTM) and prestack depth migration (PSDM),but also by reverse time migration (RTM) with common shot-point gather sorting. The proposed quality control includes also trace headers plotting,conversion,and comparison for CMP gather headers,stack verification,and migration verification for gather and velocity quality. The proposed approach is applied to a CSPWD operation in an oilfield,western China. The results show the proposed approach can not only satisfy data preparation timeliness,but also guarantee gather and velocity volume quality.
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Sun Jiaqing, Hu Shuhua, Wang Xiaowei, Liu Weiming, Wang Jing, Ling Yue. Data preparation and quality control for constraint seismic processing while drilling. OGP, 2017, 52(3): 618-627.
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