玛湖凹陷风城组二段页岩油层系伴生碱矿特征及沉积发育模式

doi:10.7657/XJPG20260102

新疆石油地质 ›› 2026, Vol. 47 ›› Issue (1): 11-19.doi: 10.7657/XJPG20260102

玛湖凹陷风城组二段页岩油层系伴生碱矿特征及沉积发育模式

黄立良¹^,²(), 邹阳², 杨勇强³(), 李广兴², 吴俊军², 姜振学¹, 刘新龙²

1.中国石油大学（北京）非常规油气科学技术研究院，北京 102249
2.中国石油新疆油田分公司勘探开发研究院，新疆克拉玛依 834000
3.中国石油大学（华东）地球科学与技术学院，山东青岛 266580

收稿日期:2025-09-12 出版日期:2026-02-01 发布日期:2026-01-23
通讯作者: 杨勇强 E-mail:hlil@petrochina.com.cn;yongqiangyang@upc.edu.cn
作者简介:黄立良（1979-），男，吉林榆树人，高级工程师，硕士，油气勘探，（Tel）0990-6877671（Email）hlil@petrochina.com.cn
基金资助:
中国石油前瞻性基础性技术攻关项目(2022DJ0108);中国石油新疆油田重点研发项目(2024XJZD01)

Characteristics and Development Model of Associated Alkaline Ore in the Shale Oil Reservoirs of the Second Member of Fengcheng Formation, Mahu Sag, Junggar Basin

HUANG Liliang¹^,²(), ZOU Yang², YANG Yongqiang³(), LI Guangxing², WU Junjun², JIANG Zhenxue¹, LIU Xinlong²

1. Unconventional Petroleum Research Institute, China University of Petroleum (Beijing), Beijing 102249, China
2. Research Institute of Exploration and Development, Xinjiang Oilfield Company, PetroChina, Karamay, Xinjiang 834000, China
3. School of Geosciences, China University of Petroleum (East China), Qingdao, Shandong 266580, China

Received:2025-09-12 Online:2026-02-01 Published:2026-01-23
Contact: YANG Yongqiang E-mail:hlil@petrochina.com.cn;yongqiangyang@upc.edu.cn

摘要/Abstract

摘要：

准噶尔盆地玛湖凹陷下二叠统风城组碱矿是重要的固体矿产资源。针对目前碱矿在基础研究中存在的诸如成因机制、沉积演化过程研究不足等问题，通过开展岩心精细描述、全岩X射线衍射分析、岩石薄片鉴定、扫描电镜分析、地球化学特征分析等，结合地球物理特征恢复了碱矿空间分布，建立了玛湖凹陷风城组碱矿的沉积发育模式。结果表明：碱矿主要由碳酸盐矿物组成，包括天然碱、苏打石、氯碳钠镁石、碳钠镁石、碳钠钙石等，深部火山热液活动为碱矿形成提供了物质基础；钠碳酸盐矿物的共生组合受水体盐度的严格控制，其测井响应具有大井径、高声波时差、高中子孔隙度、低电阻率、低密度和低自然伽马的特点，深侧向电阻率与浅侧向电阻率呈现明显的反向变化特征；碱矿在斜坡带和洼陷带均有分布，宏观产出状态差异较大；综合岩心沉积相序分析，建立了气候波动与幕式火山活动交替作用下的多源成碱模式。可为类似湖盆中碱矿的勘查和资源综合利用提供借鉴。

关键词: 准噶尔盆地, 玛湖凹陷, 下二叠统, 风城组, 页岩油, 碱矿, 碱湖沉积模式

Abstract:

The Lower Permian Fengcheng formation in the Mahu sag of the Junggar Basin hosts alkaline ore which represents an important type of solid mineral resources. The alkaline ore has been insufficiently studied with respect to genetic mechanism and sedimentary evolution process. This paper restores the spatial distribution of alkaline ore in the Fengcheng formation in the Mahu sag through detailed core description, whole-rock X-ray diffraction(XRD) analysis, rock thin section identification, scanning electron microscopy(SEM) analysis, and geochemical analysis, and considering the geophysical characteristics, and then establishes the development model of the alkaline ore. It is found that the alkaline ore in the Fengcheng formation is predominantly composed of carbonate minerals, including trona, nahcolite, northupite, eitelite, and shortite, and it was formed with the source supply by deep volcanic hydrothermal activities. The symbiotic combination of Na-carbonate minerals are constrained by formation water salinity, and the logging responses to the minerals are characterized by high CAL, high AC, high CNL, low RT, low DEN, and low GR values, with obviously opposite trends for RLLD and RLLS. The alkaline ore is distributed in both slope and depression zones, with significant differences in macroscopic occurrence states. Based on the analysis of sedimentary facies and sequence of core samples, a model of multi-source alkaline-ore development under the alternating effects of climate fluctuation and episodic volcanic activity was established. The study results provide valuable reference for the exploration and comprehensive utilization of alkaline ore in similar lake basins.

Key words: Junggar Basin, Mahu sag, Lower Permian, Fengcheng formation, shale oil, alkaline ore, alkaline-lake depositional model

中图分类号:

P618.13

黄立良, 邹阳, 杨勇强, 李广兴, 吴俊军, 姜振学, 刘新龙. 玛湖凹陷风城组二段页岩油层系伴生碱矿特征及沉积发育模式[J]. 新疆石油地质, 2026, 47(1): 11-19.

HUANG Liliang, ZOU Yang, YANG Yongqiang, LI Guangxing, WU Junjun, JIANG Zhenxue, LIU Xinlong. Characteristics and Development Model of Associated Alkaline Ore in the Shale Oil Reservoirs of the Second Member of Fengcheng Formation, Mahu Sag, Junggar Basin[J]. Xinjiang Petroleum Geology, 2026, 47(1): 11-19.

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玛湖凹陷风城组二段页岩油层系伴生碱矿特征及沉积发育模式

Characteristics and Development Model of Associated Alkaline Ore in the Shale Oil Reservoirs of the Second Member of Fengcheng Formation, Mahu Sag, Junggar Basin

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