摘要
吐哈盆地经过十几年大规模地震勘探,大多数显形圈闭(幅度较大、地震剖面上明显见到)均已被发现和钻探,隐蔽圈闭及裂缝性油藏已逐渐成为油气勘探开发的主要目标。从近几年国际地震勘探的发展看,宽方位角三维(全三维)地震在寻找裂隙、岩性和隐蔽型油气田方面见到了较好效果,成为寻找隐蔽圈闭的有效勘探方法。宽方位角三维地震处理技术比常规地震资料处理技术有以下主要特点:①在地震成像上,宽方位角采集比窄方位角具有更高的空间成像分辨率;②在储层信息提取上,宽方位角采集比窄方位角信息更丰富、更准确。因此,开展宽方位角三维观测系统采集、处理具有重大意义。
After large -scale seismic exploration has been undertaken for a decade in Tuha basin, the majority of found traps（ with high amplitude, seen obviously in seismic section）have been discovered and drilled. Subtle trap and fracture reservoir gradually become the main target of the oil and gas exploration and development. By reviewing the development of international seismic survey in recent years, wide azimuth three - dimensional （ full three - dimensional） seismic takes good effects in searching for fracture and lithologic and subtle oil - gas field, and become an effective exploration method to seek subtle trap. Compared to conventional seismic data processing technique, wide azimuth three - dimensional seismic process technique has following features, first, spatial image resolution of wide azimuth is higher than that of narrow azimuth ; second, gathering information by wide azimuth is richer and more accurate than by narrow azimuth. Gathering and processing of wide azimuth three - dimensional observation system is of significance. As for actual width azimuth three - dimensional data in Shengbei in 2003, processing technique and its results of width azimuth three - dimensional seismic data are analyzed and studied.
出处
《吐哈油气》
2005年第4期320-325,共6页
Tuha Oil & Gas
关键词
宽方位角
面元
三维地震采集
宽方位角资料处理
wide azimuth
unit of area
three -dimensional seismic gathering
wide azimuth data processing
