鄂尔多斯盆地中北部S井区盒8下亚段砂体刻画

doi:10.3969/j.issn.1672-9803.2024.01.022

录井工程 ›› 2024, Vol. 35 ›› Issue (1): 146-154.doi: 10.3969/j.issn.1672-9803.2024.01.022

• 地质研究 • 上一篇

鄂尔多斯盆地中北部S井区盒8下亚段砂体刻画

于明航^①,②, 赵永刚^①,②, 刘茂果^③, 阴旭航^①,②, 杜家满^①,②, 申荣荣^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中国石油长庆油田分公司第四采气厂

收稿日期:2023-10-26 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,西安石油大学地球科学与工程学院地质工程专业硕士生导师,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电子二路东段18号西安石油大学雁塔校区。电话：13636809726。E-mail：yg_zhao@126.com
作者简介:于明航 1995年生,西安石油大学地球科学与工程学院地质工程专业在读硕士,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电子二路东段18号西安石油大学雁塔校区。电话：18801379514。E-mail：875185844@qq.com
基金资助:
国家自然科学基金项目“泥质纹层对致密砂岩油藏中构造缝垂向扩展的抑制机理”（编号：42072185）; 中国石油天然气股份有限公司长庆油田分公司项目“苏东41-33区块剩余储量评价及稳产对策研究”（编号：2022-12699）

Sand body characterization of lower submember of He 8 Member in S well area of the central-northern Ordos Basin

YU Minghang^①,②, ZHAO Yonggang^①,②, LIU Maoguo^③, YIN Xuhang^①,②, DU Jiaman^①,②, SHEN Rongrong^①,②

①School of Earth Sciences and Engineering, Xi'an Shiyou University, Xi'an, Shaanxi 710065, China;
②Shaanxi Key Laboratory of Petroleum Accumulation Geology, Xi'an Shiyou University, Xi'an, Shaanxi 710065, China;
③No.4 Gas Production Plant of PetroChina Changqing Oilfield Company, Ordos, Inner Mongolia 017300, China

Received:2023-10-26 Online:2024-03-25 Published:2024-04-09

摘要/Abstract

摘要： 中二叠统下石盒子组盒8段是鄂尔多斯盆地中北部S井区的主力产气层位。由于产量最高的盒8下亚段储层物性差、非均质性强,加之砂体连续性和连通性不明确,已影响到S井区盒8下亚段储层精细评价和储量复算工作的开展。在前人研究成果的基础上,通过短期基准面旋回层序划分、测井砂体形态识别、单井控砂微相分析、连井砂体接触关系剖面分析和平面砂体厚度图编制等方法的结合,对研究区砂体进行刻画。研究结果表明：研究区盒8下亚段砂体主要分布于基准面上升半旋回的中、下部和完整的基准面旋回顶部;测井砂体形态以箱形和钟形为主;心滩和河道充填为主要控砂微相类型,切叠式的砂体垂向叠置、侧切式和替代式的砂体侧向接触显著提高了砂体的连通程度;盒8下亚段1小层、盒8下亚段2小层平面上砂体发育,微相控砂明显,砂带宽度5~8 km,砂体厚度集中在0~16 m,盒8下亚段1小层平均砂体厚度为9.2 m,盒8下亚段2小层平均砂体厚度为7.4 m。以上研究成果为持续开展储层精细评价和储量复算工作提供重要地质依据。

关键词: 砂体刻画, 砂体形态, 控砂微相, 垂向叠置, 侧向接触, 砂体厚度

Abstract: He 8 Member of the Middle Permian lower Shihezi Formation is a main gas-producing zone in S well area of the central-northern Ordos Basin. Due to the poor physical properties and strong heterogeneity of lower submember of He 8 Member, which has peak production, as well as unclear continuity and connectivity of the sand bodies, it has affected fine evaluation and reserve recalculation of the reservoirs in the lower submember of He 8 Member in S well area. On the basis of previous research results, the sand bodies in the study area are characterized by combining the methods of short-term base level cycle sequence division, well logging sand body morphology identification, single well sand controlling microfacies analysis, profile analysis of well-tie sand body contact relationships, and plane sand body thickness map drawing. The research results show that the sand bodies of the lower submember of He 8 Member in study area are mainly distributed in the middle and lower parts of the base level rising hemicycle and the top of the complete base level cycle. The well logging sand body morphologies are mainly box shape and bell shape. Channel bar and channel fill are the main types of sand controlling microfacies. The vertical superposition of cut superimposed sand bodies, and the lateral contacts of lateral tangential and substitutional types of sandbodies significantly improve the connectivity degree of the sand bodies. Sand bodies are developed on the plane of subzones 1 and 2 in the lower submember of He 8 Member, with obvious microfacies sand control. Sand belt width is 5-8 km. The thickness of sand bodies is concentrated in 0-16 m. The average sand body thickness of subzone 1 in the lower submember of He 8 Member is 9.2 m. The average sand body thickness of subzone 2 in the lower submember of He 8 Member is 7.4 m. The above research results provide important geologic bases for continuously carrying out the work of reservoir fine evaluation and reserve recalculation.

Key words: sand body characterization, sand body morphology, sand controlling microfacies, vertical superposition, lateral contact, sand body thickness

中图分类号:

TE132.1

于明航, 赵永刚, 刘茂果, 阴旭航, 杜家满, 申荣荣. 鄂尔多斯盆地中北部S井区盒8下亚段砂体刻画[J]. 录井工程, 2024, 35(1): 146-154.

YU Minghang, ZHAO Yonggang, LIU Maoguo, YIN Xuhang, DU Jiaman, SHEN Rongrong. Sand body characterization of lower submember of He 8 Member in S well area of the central-northern Ordos Basin[J]. Mud Logging Engineering, 2024, 35(1): 146-154.

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鄂尔多斯盆地中北部S井区盒8下亚段砂体刻画

Sand body characterization of lower submember of He 8 Member in S well area of the central-northern Ordos Basin

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