塔中西部奥陶系桑塔木组底界灰岩段的识别及沉积学意义

韩杰,江杰，潘文庆，孙东，张敏，李丹丹

doi:10.11764/j.issn.1672-1926.2014.04.490

天然气地球科学 >

2014 , Vol. 25 >Issue 4: 490 - 497

DOI: https://doi.org/10.11764/j.issn.1672-1926.2014.04.490

天然气地质学

塔中西部奥陶系桑塔木组底界灰岩段的识别及沉积学意义

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1.中国石油塔里木油田分公司勘探开发研究院,新疆库尔勒 841000；
2.中国石油勘探开发研究院西北分院,甘肃兰州 730020

韩杰 (1979-)，男，湖北武汉人，高级工程师.主要从事油藏综合研究.E-mail:gshanjie@163.com.

收稿日期: 2013-01-15

修回日期: 2013-08-27

网络出版日期: 2014-04-10

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Identification of Limestone Formation below Sangtamu Group of Ordovician andIts Sedimentary Meaning in Western Tazhong

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1.Tarim Oilfield Company,PetroChina,Korla 841000,China; 2.Northwest Branch,PetroChina Research Institute of Petroleum Exploration & Development,Lanzhou 730020,China

Received date: 2013-01-15

Revised date: 2013-08-27

Online published: 2014-04-10

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摘要

长期以来，塔中西部上奥陶统艾家山阶桑塔木组与下伏良里塔格组分界线主要是泥岩与灰岩的分界线。在古生物地层格架下，结合岩性、电性、古地貌和地震反射特征，指出在局部地区桑塔木组底部存在大套灰岩分布区，分为条带状分布和斑团状分布，代表良里塔格组沉积期的古地貌高地，也即代表良里塔格组高能相带的分布区，具有较强的沉积环境指示意义。基于这一新方法识别出塔中西部Z15井区良里塔格组高能相带的分布，分为台内群滩和台缘丘滩复合体。

关键词： 塔中Ⅰ号气田; 奥陶系; 分界线; 丘滩复合体; 高能相带; 沉积环境

本文引用格式

韩杰,江杰，潘文庆，孙东，张敏，李丹丹 . 塔中西部奥陶系桑塔木组底界灰岩段的识别及沉积学意义[J]. 天然气地球科学, 2014 , 25(4) : 490 -497 . DOI: 10.11764/j.issn.1672-1926.2014.04.490

Abstract

Sangtamu Group in Aijiashan Stratum of Upper Ordovician in western Tazhong has obvious boundary line with the below Lianglitage Group,which is the boundary of clay stone and limestone.On the base of palaeontology stratum framework and combining the lithology,electric property,geomorphic feature and seismic reflection characteristics,lots of limestone distribute at the bottom of the Sangtamu Group in the form of banded and porphyritic shape in some area.They are the identification of palaeogeomorphology highland in Lianglitage Group depositional stage and also the high energy face belt distribution feature.It is of great instruction meaning for the study of sedimentary environment.The new method is used in this article to recognize high energy face belt distribution of Lianglitage Group in Western Z15 well.The high energy face belt can be divided into berg strand in inner stage and berg stand composite in stage edge.

Key words： Tazhong 1 Gasfield; Ordovician; Boundary line; Berg stand composite; High energy face belt

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