鄂尔多斯盆地黄土山地全数字地震勘探技术攻关与效果
|
摘要
近几年来针对鄂尔多斯盆地东部较薄黄土山地地区地貌特征,因地制宜开展了地震勘探,采用了沟中弯线和黄土山地直测线地震勘探技术,取得了一定的勘探效果。为了更进一步刻画砂体分布,预测有效储层,落实有效的岩性地层圈闭,2007年和2008年在鄂尔多斯盆地东部黄土山区开展了全数字地震攻关试验。一是以小道距、长排列、高密度、高覆盖、数字检波器单点接收的地震采集技术;二是以高保真、高信噪比、保持动力学特征的地震数据处理技术;三是以高精度地层层序为指导,叠前、叠后地震属性分析与储层预测技术。3项技术的有机结合提高了储层预测的精度,为盆地东部天然气勘探开发提供了技术保障。
Considering the geomorphic feature of the loess area in eastern Ordos Basin where the reservoir is relatively thin,seismic exploration was conducted to suit local conditions in recent years.The straight line method and the crooked line method in valleys were applied,and some exploration results were achieved.To further characterize the distribution of sand bodies,forecast the effective reservoir,and to carry out effective lithological stratigraphic traps,full digital seismic research was launched in loess area of eastern Ordos Basin in 2007 and 2008.First is the seismic acquisition technology characterized by small group,long arrangement,high density,high coverage,and digital geophone single-point reception.Second is the seismic data processing technology characterized by high fidelity and high signal-to-noise ratio to maintain dynamic characteristics.Third is prestack and poststack seismic attribute analysis and reservoir predicting technology which is guided by high-precision stratigraphic sequence.The combination of the three technologies improves the accuracy of reservoir prediction and provides technological support for natural gas exploration and development in the east of the basin.
Considering the geomorphic feature of the loess area in eastern Ordos Basin where the reservoir is relatively thin,seismic exploration was conducted to suit local conditions in recent years.The straight line method and the crooked line method in valleys were applied,and some exploration results were achieved.To further characterize the distribution of sand bodies,forecast the effective reservoir,and to carry out effective lithological stratigraphic traps,full digital seismic research was launched in loess area of eastern Ordos Basin in 2007 and 2008.First is the seismic acquisition technology characterized by small group,long arrangement,high density,high coverage,and digital geophone single-point reception.Second is the seismic data processing technology characterized by high fidelity and high signal-to-noise ratio to maintain dynamic characteristics.Third is prestack and poststack seismic attribute analysis and reservoir predicting technology which is guided by high-precision stratigraphic sequence.The combination of the three technologies improves the accuracy of reservoir prediction and provides technological support for natural gas exploration and development in the east of the basin.
引文
肖国强,全数字地震勘探技术试验成果报告,2007。
[1]朱国华.碎屑岩储集层孔隙的形成、演化和预测[J].沉积学报,1992,10(3):121～130.
[2]寿建峰,朱国华,张惠良,等.中国北方含油气盆地中、新生界碎屑岩储层特征与评价[J].中国石油勘探,2004,9(5):31～39.
[3]张越迁,张年富.准噶尔大型叠合盆地油气富集规律[J].中国石油勘探,2006,11(1):59～64.
[4]罗志立,李景明,李小军,等.中国前陆盆地特征及含油气远景分析[J].中国石油勘探,2004,9(2):1～11.
[1]朱国华.碎屑岩储集层孔隙的形成、演化和预测[J].沉积学报,1992,10(3):121～130.
[2]寿建峰,朱国华,张惠良,等.中国北方含油气盆地中、新生界碎屑岩储层特征与评价[J].中国石油勘探,2004,9(5):31～39.
[3]张越迁,张年富.准噶尔大型叠合盆地油气富集规律[J].中国石油勘探,2006,11(1):59～64.
[4]罗志立,李景明,李小军,等.中国前陆盆地特征及含油气远景分析[J].中国石油勘探,2004,9(2):1～11.
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