大港油田油气开发区三维地震二次采集部署方法探讨

The secondary acquisition of 3-D seismic survey in oil-gas production area

东方地球物理勘探公司研究院大港分院,天津大港 300280

Dagang Branch, Bgp Geophysical Research Institute, CNPC, Tianjin 300280, China

在勘探成熟区仍赋存大量的油气资源,但此类地区的地震资料往往是多年度、不同仪器采集的,资料品质相差较大,不能满足深入勘探开发的要求。因此,需要结合各开发区的具体评价结果,在整体部署、分期实施等原则下对开发区进行高精度三维二次采集。针对这一问题,从5个方面对开发区的地震部署方法进行了阐述:①各油气开发区资源潜力的分析;②各开发区地震资料的评价;③开发区三维二次采集部署原则的制定;④采集区块的确定和采集要求的提出;⑤采集的实施。

There is plenty of oil and gas in old oilfields. The quality of seismic data is not good enough to meet demand of research because of different acquiring time and instruments in these areas. So it is very necessary to acquire seismic data for second time on the base of detailed research. The article present seismic deployment from the five aspects following: ① analyze source potential of development area; ② valuate seismic data of each development area; ③ determine deployment principle of second acquisition 3-D seismic; ④ determine acquisition area and demand ; ⑤ actualize to acquisition. These results of a-nalysis can be basic data for later research and provide proof for later seismic deployment of oilfield.