鄂尔多斯盆地DND气田马家沟组马五段小层划分探析

doi:10.3969/j.issn.1672-9803.2024.01.018

录井工程 ›› 2024, Vol. 35 ›› Issue (1): 112-118.doi: 10.3969/j.issn.1672-9803.2024.01.018

鄂尔多斯盆地DND气田马家沟组马五段小层划分探析

申荣荣^①,②, 赵永刚^①,②, 唐明远^③, 阴旭航^①,②, 杜家满^①,②, 于明航^①,②

①西安石油大学地球科学与工程学院;
②西安石油大学陕西省油气成藏地质学重点实验室;
③中国石化华北油气分公司勘探开发研究院

收稿日期:2024-01-11 出版日期:2024-03-25 发布日期:2024-04-09
通讯作者: 赵永刚 1976年生,教授,西安石油大学硕士生导师,研究方向为沉积学与储层地质。通信地址：710065 陕西省西安市雁塔区西安石油大学电子二路18号。电话：13636809726。E-mail：yg_zhao@126.com
作者简介:申荣荣 1998年生,西安石油大学矿物学、岩石学、矿床学专业在读硕士研究生,研究方向为储层地质学。通信地址：710065 陕西省西安市雁塔区西安石油大学电子二路18号。电话：18762068662。E-mail：1925771704@qq.com
基金资助:
国家自然科学基金项目“烃源岩早期产物对致密油充注聚集的控制机理研究”（编号：42072185）; 中国石油化工股份有限公司华北油气分公司项目“大牛地气田马家沟组古岩溶水系统研究”（编号：34550008-21-ZC0609-0017）

Exploration and analysis of subdivision in member 5 of Majiagou Formation of DND gas field in Ordos Basin

SHEN Rongrong^①,②, ZHAO Yonggang^①,②, TANG Mingyuan^③, YIN Xuhang^①,②, DU Jiaman^①,②, YU Minghang^①,②

①School of Geosciences and Engineering, Xi'an Shiyou University, Xi'an, Shaanxi 710065, China;
②Shaanxi Provincial Key Laboratory of Petroleum Accumulation Geology, Xi 'an Shiyou University, Xi'an, Shaanxi 710065, China;
③Exploration & Development Research Institute of Sinopec North China Oil and Gas Branch, Zhengzhou, Henan 450000, China

Received:2024-01-11 Online:2024-03-25 Published:2024-04-09

摘要/Abstract

摘要： 鄂尔多斯盆地DND气田中奥陶统马家沟组自下而上划分为6段,其中马五段是该气田下古生界主要产气层,随着对DND气田马五段气藏的开发力度不断加大,马五₆-马五₁₀亚段的小层精细划分已日益迫切。为此在继承鄂尔多斯盆地中东部马五₁-马五₅亚段小层成熟划分方案的基础上,利用岩心、薄片、录井、测井资料针对研究区136口井的马五段尤其是马五₆、马五₇亚段进行亚段及小层的精细划分,寻找并确定标志层,利用对碳酸盐岩岩性敏感的光电吸收截面指数曲线区分石灰岩与白云岩地层,将自然伽马、自然电位、声波时差等多种测井响应结合识别碳酸盐岩岩性段。研究表明：目前可将马家沟组马五段划分出10个亚段和21个小层;马五₆亚段“四分”,厚度范围为4.6~13.3 m,平均值8.8 m;马五₇亚段“三分”,厚度范围为5.9~15.3 m,平均值9.8 m。马五₆、马五₇亚段小层精细划分在鄂尔多斯盆地尚属首次,将为DND气田及其他气田的马家沟组中组合气藏小层划分提供重要参考。

关键词: 马家沟组, 马五段, 马五₆亚段, 马五₇亚段, 小层精细划分, 鄂尔多斯盆地

Abstract: The Majiagou Formation of the Ordovician in the DND gas field of the Ordos Basin is divided into six members from bottom to top. Among them,the Ma 5 member is the main gas producing layer in the Lower Paleozoic of the gas field. With the increasing development efforts of the Ma 5 gas reservoir in the DND gas field, the fine division of small layers in the Ma 5₆-Ma 5₁₀ subzone has become increasingly urgent. On the basis of inheriting the subzone division plan of Ma 5₁-Ma 5₅ in the central and eastern part of the Ordos Basin,this article uses core,thin section,mud logging,and well logging data to finely divide the subzone and small layers of Ma 5,especially Ma 5₆ and Ma 5₇,in 136 wells in the study area. The main task is to search for and determine the marker layer by using the photoelectric absorption cross-section index curve sensitive to carbonate rock lithology to distinguish between limestone and dolomite formations. Multiple logging responses such as natural gamma, natural potential, and acoustic time difference are combined to identify carbonate rock lithology sections. Currently,the Majiagou Formation Ma 5 member can be divided into 10 sub sections and 21 small layers;The Ma 5₆ subzone is divided into four parts, with a thickness range of 4.6-13.3 m and an average thickness of 8.8 m;The Ma 5₇ subzone is divided into three parts,with a thickness range of 5.9-15.3 m and an average thickness of 9.8 m. The fine division of subzone in Ma 5₆ and Ma 5₇ is the first time in the Ordos Basin, which will provide important reference for the subdivision of combined gas reservoirs in the Majiagou Formation of DND and other gas fields.

Key words: Majiagou Formation, member 5 of Majiagou Formation, Ma 5₆ subzone, Ma 5₇ subzone, fine division of small layers, Ordos Basin

中图分类号:

TE132.1

申荣荣, 赵永刚, 唐明远, 阴旭航, 杜家满, 于明航. 鄂尔多斯盆地DND气田马家沟组马五段小层划分探析[J]. 录井工程, 2024, 35(1): 112-118.

SHEN Rongrong, ZHAO Yonggang, TANG Mingyuan, YIN Xuhang, DU Jiaman, YU Minghang. Exploration and analysis of subdivision in member 5 of Majiagou Formation of DND gas field in Ordos Basin[J]. Mud Logging Engineering, 2024, 35(1): 112-118.

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鄂尔多斯盆地DND气田马家沟组马五段小层划分探析

Exploration and analysis of subdivision in member 5 of Majiagou Formation of DND gas field in Ordos Basin

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