廊固凹陷凤河营潜山带地震采集方法研究
摘要
冀中坳陷的勘探程度高,目前绝大多数中浅层构造目标已基本落实,而且已经进入滚动开发的中、后期阶段,油气储量和产量呈现不可逆转的递减,迫使中浅层构造勘探工作逐步走入低谷,制约了油田公司的健康发展。相对而言,深潜山及其内幕的勘探程度相对较低,且具有很大的勘探潜力,是目前主要的勘探领域。但该领域现有的大多数地震资料都存在信噪比低、成像差、归位不准确等问题。因此,以凤河营潜山带为目标靶区,针对目标靶区的地震地质条件,开展覆盖次数、接收线距、道密度及观测系统均匀度等地震采集方法研究,取得了良好的效果,地震资料品质有了显著提高,而且总结了一套适合于冀中坳陷深潜山及内幕勘探的地震采集方法,为今后在类似区域进行地震采集提供了有利依据。
Exploration degree is high in Jizhong Depression. Currently, most of the structural targets in the middle and shallow layers have been located and brought under progressive development in the medium and later stages. The oil and gas reserves and production are inevitably on the decline, making exploration of the structures in the middle and shallow layers more and more difficult and affecting a healthy development of the company. Comparably speaking, exploration degree is relatively low in deep buried hill and its inner curtain, where there is a great potential for exploration. They are the main exploration fields at the present time. However, most of the current seismic data about this field have the problems of low signal-noise ratio, poor imaging and inaccuracy. Therefore, the study is focused on the target zone of Fengheying buried hill and the seismic geological conditions in the target zone. Good results have been achieved in study of the seismic acquisition method, such as times of fold, receiving line interval, channel density and geometry of uniformity. With the quality of seismic data remarkably improved, a set of seismic acquisition method has been summarized to facilitate exploration of deep buried hill and its inner curtain in Jizhong Depression so as to provide favorable basis for seismic data acquisition in the similar areas.
Exploration degree is high in Jizhong Depression. Currently, most of the structural targets in the middle and shallow layers have been located and brought under progressive development in the medium and later stages. The oil and gas reserves and production are inevitably on the decline, making exploration of the structures in the middle and shallow layers more and more difficult and affecting a healthy development of the company. Comparably speaking, exploration degree is relatively low in deep buried hill and its inner curtain, where there is a great potential for exploration. They are the main exploration fields at the present time. However, most of the current seismic data about this field have the problems of low signal-noise ratio, poor imaging and inaccuracy. Therefore, the study is focused on the target zone of Fengheying buried hill and the seismic geological conditions in the target zone. Good results have been achieved in study of the seismic acquisition method, such as times of fold, receiving line interval, channel density and geometry of uniformity. With the quality of seismic data remarkably improved, a set of seismic acquisition method has been summarized to facilitate exploration of deep buried hill and its inner curtain in Jizhong Depression so as to provide favorable basis for seismic data acquisition in the similar areas.
引文
[1]苟华伟.塔里木盆地和渤海湾盆地潜山圈闭对比分析[J].石油实验地质,1996,18(3):229～235.
[2]赵贤正,等.华北探区断陷洼槽区油气藏形成与分布[J].中国石油勘探,2008,13(2):1～8.
[3]陆基孟.地震勘探原理[M].北京:石油工业出版社,1986.
[4]屠世杰.高精度三维地震勘探中的炮密度、道密度选择——YA高精度三维勘探实例[J].石油地球物理勘探,2010,45(6):926～935.
[5]王喜双,谢文导,邓志文,等.高密度空间采样地震技术发展与展望[J].中国石油勘探,2007,12(1):49～55.
[6]Bai Xuming.The control point’s uniformity analysis in near-surface structure investigation.SEG2010Expanded Abstracts,2010.
[2]赵贤正,等.华北探区断陷洼槽区油气藏形成与分布[J].中国石油勘探,2008,13(2):1～8.
[3]陆基孟.地震勘探原理[M].北京:石油工业出版社,1986.
[4]屠世杰.高精度三维地震勘探中的炮密度、道密度选择——YA高精度三维勘探实例[J].石油地球物理勘探,2010,45(6):926～935.
[5]王喜双,谢文导,邓志文,等.高密度空间采样地震技术发展与展望[J].中国石油勘探,2007,12(1):49～55.
[6]Bai Xuming.The control point’s uniformity analysis in near-surface structure investigation.SEG2010Expanded Abstracts,2010.
版权所有：© 2023 中国地质图书馆 中国地质调查局地学文献中心