天然气地质学

川东长兴组物礁分布控制因素及地震识别技术

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  • (1.西南油气田分公司重庆气矿,重庆 400021; 2.成都物探研究中心,四川 成都 610212)
毕长春(1973-),男,重庆垫江人,工程师,硕士,主要从事天然气勘探地质研究.E-mail:bicc@petrochina.com.cn.

收稿日期: 2007-03-30

  修回日期: 2007-06-08

  网络出版日期: 2007-08-20

GEOLOGICAL CONTROL FACTORS OF CHANGXING ORGANIC REEF DISTRIBUTION span AND SEISMIC PREDICTION TECHNIQUES, EAST SICHUAN BASIN

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  • (1.Chongqing Department of PetroChina Southwest Oil and Gas Field Company, Chongqing 400021, China; 2.Chengdu Geophysical Research Center, Geophysical Exploration Company, SPA, Chengdu 610212, China)

Received date: 2007-03-30

  Revised date: 2007-06-08

  Online published: 2007-08-20

摘要

四川盆地东部地区龙潭末期形成的“开江—梁平”海槽古地貌与长兴期的持续海侵背景共同控制了该区长兴组生物礁的生长形态及分布规模,而“开江—梁平”海槽东西两侧的台缘相带为生物礁分布的有利相带。通过二维、三维地震剖面,结合长兴组顶部的反射形态和长兴组顶部与底部反射时差等特性,识别出了长兴末期“海槽—前缘斜坡—岩隆—台地”相带,且生物礁主要分布在地震岩隆相带中,认为三维地震资料中的振幅切片和相干体切片技术,可以精细“雕刻”生物礁形态和分布特征。

本文引用格式

毕长春, 李联新, 梅燕, 张延充, 何诚 . 川东长兴组物礁分布控制因素及地震识别技术[J]. 天然气地球科学, 2007 , 18(4) : 509 -513 . DOI: 10.11764/j.issn.1672-1926.2007.04.509

Abstract

The organic reef formation and distributed scale are controlled by the Kaijiang Liangping” trough palaeogeomorphology formed at the end of Longtan” perioand sustained sea transgression during the “Changxing period in the eastern part of Sichuan Basin. The platform margin facies on both sides of the “Kaijiang Liangping” trough are the favorable regions of organic reef growth. Different facies of “trough foreslope buildup platform” at the “Changxing” period are identified using 2D and 3D seismic profiles in combination with the reflected shapes of the stratigraphic top of Changxing Formation and the time diffe rence between top and bottom in the Changxing Formation strata. The organic reefs are mainly distributed in the rock crown of the seismic profiles. The shape of organic reefs and their distribution can be predicted and carved by using techniques of amplitude slice and coherent slice in the 3D seismic profiles. Based on the techniques above, the expected results have been achieved in the gas fields of Wubaiti and Gaofengchang.

参考文献

 
1]王一刚,文应初,张帆,等.川东地区上二叠统长兴组生物礁分布规律[J ].天然气工业,1998,18(6):10-15.
2]  B r 库兹涅佐夫.礁地质学及礁的含油气性 [M ].李建温译.北京:石油工业出版社1978.
3]  魏国齐,刘德来,张林,等.四川盆地天然气分布规律与有利勘探领域[J].天然气地球科学,2005,16(4):437-442.  
4]  陈中强.二叠纪末期的全球淹没事件[J].岩相古地理,1995,15(3):34-39.
5]  王兴致,张帆,马青,等.四川盆地东部晚二叠世—早三叠世飞仙关期礁滩特征与海平面变化[J].沉积学报,2002,20(2):249-253.
6]  蔡刚,孙东,裴明利,等.相干体技术及其在油气勘探中的应用[J].天然气地球科学,2006,17(4):510-513.
7]   Marfurt K J, Farmer R L, Bahorich M S. 3-D seismic attri-butes using a semblance-based coherency algorithm[J].Geo physics, 1998, 63(4):1150-1165.
8]付雷.相干体技术在三维地震资料中的运用[J].世界地质,2006,19(3):15-17.
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