Near-Surface Structure and Static Correction Method for Lu-9 Well Area in Junggar Basin
详细信息
- 责任者：Wu Qiang (Supervision Company ; Xinjiang Oilfield Company ; PetroChina ; Karamay 834000 ; China) ; Zhao Feng
- 刊名：Xinjiang Petroleum Geology
- 出版年：2013
- 卷期：34(1)
- 关键词：地震勘探 ; seismic exploration ; 静校正 ; static correction ; 准噶尔盆地 ; Junggar Basin
- 页码：p.95-97
- 图表：illus., 1 table, 6 refs.
- 分类号：1600
- issnNo：ISSN1001-3873
- isbnNo：CN65-1107/TE
摘要
The vertical and lateral variation of surface or near-surface structures is one of important factors of causing different wave lengths static correction problem.The surface of Lu-9 well area in Junggar basin is covered by desert and characterized by varied reliefs and typical aeolian sediments.Under the uncemented dune is the early exposed ancient lakebed where cemented or semi-cemented sand-shale interbed is distributed and characterized by aqueous origin.In the past the traditional surface structure investigation method could not be used to get accurate depth and velocity parameters of the surface and/or near-surface structures,resulting in that the long wavelength static correction should be made for the seismic data available.This paper presents the method for such correction of seismic data from this well area.The analysis,comparison and result show that such a correction can not only be used to obtain the data as required,but also develop the model for near-surface depth vs.velocity,so as to continuously determine the vertical and lateral velocity variations of strata above the top of high velocity layers and provide basis for the near-surface structural researches.
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