准噶尔盆地春光区块砂泥岩压实曲线分析及其在砂体识别中的应用
|
摘要
准噶尔盆地春光区块新近系沙湾组埋藏浅,砂泥岩速度随埋深的增加变化幅度大,砂体在地震上的响应也随着深度的变化而有所不同,不同深度砂体的识别方法不一致。砂泥岩压实曲线可很好地描述速度差随深度的变化情况,有助于了解不同深度段波阻抗的变化情况及砂体类型,再结合合成记录和波形分析,即可了解不同深度的砂体在地震剖面上的显示,从而进行砂体识别。该方法在研究区块应用较好,砂体识别效果显著。
The Shawan Formation of the Paleogene is buried shallow in Chunguang Oilfield in Zhunger Basin, The velocities of sand-shale changes sharply with the increasing buried depth, the behavior of the sand body also change along with the depth change on the seismic section, so the different identification methods are used to identify the sand bodies which are at different depths. The compaction curves of sand-shale can be used to describe the changes of the velocity vs depth. It is helpful to understand the changes of the wave impedance and the types of the sand body in different depths. The sand bodies can be identified by understanding the sand bodies in different depth displayed on the seismic section combined with the synthetic seismogram and waveform analysis. A good result has been obtained in sand body identification in Chunguang Oilfiled.
The Shawan Formation of the Paleogene is buried shallow in Chunguang Oilfield in Zhunger Basin, The velocities of sand-shale changes sharply with the increasing buried depth, the behavior of the sand body also change along with the depth change on the seismic section, so the different identification methods are used to identify the sand bodies which are at different depths. The compaction curves of sand-shale can be used to describe the changes of the velocity vs depth. It is helpful to understand the changes of the wave impedance and the types of the sand body in different depths. The sand bodies can be identified by understanding the sand bodies in different depth displayed on the seismic section combined with the synthetic seismogram and waveform analysis. A good result has been obtained in sand body identification in Chunguang Oilfiled.
引文
[1]汪彩云.地震技术在车排子地区岩性油藏勘探中的应用[J].勘探地球物理进展,2009,32(4):280-285
[2]马中高.成岩作用和岩石结构对砂岩弹性速度的影响[J].石油学报,2008,29(1):58-63
[3]N.A.安斯蒂著,牛毓荃译.北京:石油工业出版社,1989
[4]马沛东.准噶尔盆地车排子地区上第三系砂体识别方法[J].石油探,2006,45(5):487-491
[2]马中高.成岩作用和岩石结构对砂岩弹性速度的影响[J].石油学报,2008,29(1):58-63
[3]N.A.安斯蒂著,牛毓荃译.北京:石油工业出版社,1989
[4]马沛东.准噶尔盆地车排子地区上第三系砂体识别方法[J].石油探,2006,45(5):487-491
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