准噶尔盆地陆梁地区侏罗系西山窑组钙质夹层成因及勘探意义

doi:10.12108/yxyqc.20250108

岩性油气藏 ›› 2025, Vol. 37 ›› Issue (1): 90–101.doi: 10.12108/yxyqc.20250108

准噶尔盆地陆梁地区侏罗系西山窑组钙质夹层成因及勘探意义

何岩¹, 许维娜¹, 党思思¹, 牟蕾¹, 林少玲², 雷章树²

1. 中国石油新疆油田公司, 新疆克拉玛依 834000;
2. 长江大学录井技术与工程研究院, 湖北荆州 430000

收稿日期:2024-08-25 修回日期:2024-09-20 出版日期:2025-01-01 发布日期:2025-01-04
第一作者:何岩（1989—），男，硕士，高级工程师，主要从事油气田开发研究工作。地址：（834000）新疆克拉玛依市准噶尔路32号新疆油田分公司勘探开发研究院。Email：cathy77@163.com。
通信作者: 林少玲（1999—），女，长江大学在读研究生，研究方向为储层表征与建模。Email:18819779662@163.com。
基金资助:
国家科技重大专项“深层油气资源经济评价方法与评价标准”（编号：2017ZX05008-006-004-002）和国家自然科学青年基金“冲积扇储层孔隙结构复杂模态成因机制及其分布模式”（编号：41502126）联合资助。

Genesis and exploration significance of calcareous intercalation of Jurassic Xishanyao Formation in Luliang area，Junggar Basin

HE Yan¹, XU Weina¹, DANG Sisi¹, MOU Lei¹, LIN Shaoling², LEI Zhangshu²

1. Research Institute of Exploration and Development, Xinjiang Oilfield Company, Karamay 834000, Xinjiang, China;
2. Institute of Mud Logging Technology and Engineering, Yangtze University, Jingzhou 434023, Hubei, China

Received:2024-08-25 Revised:2024-09-20 Online:2025-01-01 Published:2025-01-04

摘要/Abstract

摘要： 关于钙质夹层的研究对于油田开发中后期至关重要。基于岩心描述、铸体薄片、扫描电镜、常规测井、CT、XRD和生产动态等资料，利用层次结构分析法、多维互动储层构型表征方法、三维嵌入式夹层建模和油藏数值模拟等方法，对陆梁油田陆9井区侏罗系西山窑组钙质夹层发育特征、成因、分布模式及三维模型开展了研究。研究结果表明：①准噶尔盆地陆梁地区侏罗系西山窑组钙质夹层主要分布在致密中细砂岩中，是典型的物性夹层，具有特低孔、低渗、较明显的“三低两高”的测井响应等特征。②研究区水下分流河道丰富的沉积物供给以及在三角洲前缘生物碎屑矿化过程溶解的Ca²⁺和CO₃^2-离子转化为固态碳酸钙，为钙质夹层的形成奠定了物质基础；钙质夹层主要形成于成岩期，按照成因可划分为2类，一类发育于近泥岩地层的薄砂层中，为成岩演化胶结型；另一类发育于物性较好、连通性较好的河道砂体中—底部及河道叠置处，为次生孔隙充填胶结型。③研究区钙质夹层厚度为0.25～2.00 m，长为200～1 300 m，宽为100～900 m，平面分布较连续，在垂直物源方向变化较大，呈薄层透镜状。④钙质夹层对剩余油分布控制明显，易形成透镜状、条带状等形态的剩余油富集区，研究区剩余油主要分布于J₂x₄^1-3和J₂x₄^2-1小层。

关键词: 钙质夹层, 储层构型, 储层建模, 油藏数值模拟, 孔隙结构, 剩余油, 西山窑组, 侏罗系, 陆梁地区, 准噶尔盆地

Abstract: Based on core description，cast thin slice，scanning electron microscopy，conventional logging，CT， XRD，production dynamics and other data，the development characteristics，genesis，distribution pattern and 3D model of calcareous intercalation of Jurassic Xishanyao Formation in well 9 area of Luliang Oilfield are studied by means of hierarchical structure analysis，multi-dimensional interactive reservoir configuration characterization， 3D embedded intercalation modeling and reservoir numerical simulation. The results showed that：（1）The calcareous intercalations are mainly distributed in the densified medium and fine sandstone，and are typical physical intercalations. Its physical properties are characterized by extremely low porosity and low permeability，and it is a typical physical intercalation with“three low and two high”logging response characteristics.（2）The abundant sediment supply from underwater distributary channels and the mineralization process of bioclastic debris at the delta front，where dissolved Ca²⁺ and CO₃^2- are converted into solid calcium carbonate，provide the sedimentary material basis for the formation of calcareous layers. Calcareous layers primarily form during the diagenetic stage. Based on their genesis，they can be divided into two main types：one type is the cementation of thin sand layers within the proximity of mudstone formations，and those are calcareous cementation of diagenetic evolution；the other type develops in river channel sand bodies with good physical properties and connectivity，specifically at the base and overlapping areas of the channels，where secondary porosity is filled and cemented in pores. （3）It is mainly distributed of calcareous intercalation，with a thickness of about 0.25-2.00 m，a length of about 200-1 300 m and a width of about 100-900 m. The planar distribution is relatively continuous，and the direction of vertical material source varies greatly，and it is thin layer lenticular.（4）The calcareous interlayer has obvious control over the distribution of residual oil，forming residual oil-rich zones in the form of lenses and strips，etc. The residual oil in the study area is mainly distributed in J₂x₄^1-3 and J₂x₄^2-1 layers.

Key words: calcareous interlayer, reservoir architecture, reservoir modeling, reservoir numerical simulation, pore structure, residual oil, Xishanyao Formation, Jurassic, Luliang area, Junggar Basin

中图分类号:

TE121.3

何岩, 许维娜, 党思思, 牟蕾, 林少玲, 雷章树. 准噶尔盆地陆梁地区侏罗系西山窑组钙质夹层成因及勘探意义[J]. 岩性油气藏, 2025, 37(1): 90–101.

HE Yan, XU Weina, DANG Sisi, MOU Lei, LIN Shaoling, LEI Zhangshu. Genesis and exploration significance of calcareous intercalation of Jurassic Xishanyao Formation in Luliang area，Junggar Basin[J]. Lithologic Reservoirs, 2025, 37(1): 90–101.

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准噶尔盆地陆梁地区侏罗系西山窑组钙质夹层成因及勘探意义

Genesis and exploration significance of calcareous intercalation of Jurassic Xishanyao Formation in Luliang area，Junggar Basin

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