Sequence-based lithofacies and paleogeography mapping of Paleogene in Lvda area, Liaodongwan Basin

  • WANG Bingjie ,
  • HE Sheng ,
  • NI June ,
  • FANG Du
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  • State Key Laboratory of Oil and Gas Reservoir Geology and Exploitation,Chengdu University of Technology, Chengdu 610059, China

Online published: 2008-03-15

Abstract

According to the data of cores, logging and some seismic data, under the guidance of the theory of highresolution sequence stratigraphy, the Paleogene is divided into two super long-term sequence cycles, 6 long-term sequence cycles, 18 middle-term sequence cycles and some dozens of short-term sequence cycles. Based on interfaces and structure characteristics, by selecting the rising and falling base-level phases of each long-term sequence cycle as the isochronous mapping unit, the sequence-based lithofacies and paleogeography maps are drawn. The evolution rule is deduced: during the phase of LSC2 and LSC3, the primary depositional environments are shallow lake and sublacustrine turbidite fan; sublacustrine turbidite fan and delta are developed during the phase of LSC4; and during the phase of LSC5 and LSC6, delta and shallowlake become prevalent. Frombottomto top, shallowlake, sublacustrine turbidite fan and delta depositional configuration formed, and the sand body extended, which can provide basis for forecasting reservoir sand body.

Cite this article

WANG Bingjie , HE Sheng , NI June , FANG Du . Sequence-based lithofacies and paleogeography mapping of Paleogene in Lvda area, Liaodongwan Basin[J]. Lithologic Reservoirs, 2008 , 20(1) : 39 -46 . DOI: 10.3969/j.issn.1673-8926.2008.01.007

References

[ 1] 田景春, 陈洪德, 覃建雄, 等.层序- 岩相古地理图及其编制[ J] .地球科学与环境学报, 2004, 26( 1) : 6- 12.
[ 2] 张翔, 田景春, 刘家铎, 等.高分辨率层序地层在岩相古地理编图中的应用[ J] .西南石油学院学报, 2005, 27( 6) : 1- 5.
[ 3] 徐长贵, 许效松, 丘东洲, 等.辽东湾地区辽西凹陷中南部古近系构造格架与层序地层格架及古地理分析[ J] .古地理学报,2005, 7( 4) : 449- 459.
[ 4] 夏斌, 刘朝露, 陈根文.渤海湾盆地中新生代构造演化与构造样式[ J] .天然气工业, 2006, 26( 12) : 57- 62.
[ 5] 郑荣才, 尹世民, 彭军.基准面旋回结构与叠加样式[ J] .沉积学报, 2000, 18( 3) : 369- 375.
[ 6] 郑荣才, 文华国, 韩永林, 等.鄂尔多斯盆地白豹地区长6 油层组湖底滑塌浊积扇沉积特征及其研究意义[ J] .成都理工大学学报( 自然科学版) , 2006, 33( 6) : 566- 575.
[ 7] 郑荣才, 耿威, 周刚, 等.鄂尔多斯盆地白豹地区长6 砂岩成岩作用与成岩相研究[ J] .岩性油气藏, 2007, 19( 2) : 1- 8.
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