超深层碳酸盐岩储集层天然裂缝发育差异性——以塔里木盆地YUEM地区为例

doi:10.7657/XJPG20250203

摘要/Abstract

摘要：

针对塔里木盆地YUEM地区碳酸盐岩储集层天然裂缝发育差异性，综合露头、岩心、薄片、测井、地震与生产动态数据，采用裂缝参数统计、地震敏感属性分析、构造应力场数值模拟等，明确裂缝发育特征、形成期次、成因以及空间分布差异性。研究区共发育3期3类裂缝：成岩裂缝、构造裂缝以及复合裂缝，裂缝的发育受构造、沉积及岩溶三重耦合控制，断层斜列叠覆区、主分支断层相交处、断层端部、藻屑滩相带及溶洞顶底部，是裂缝有利发育区。

关键词: 塔里木盆地, 碳酸盐岩, 天然裂缝, 差异性, 构造, 沉积, 岩溶

Abstract:

The carbonate reservoirs in the YUEM area of Tarim Basin show differences in natural fracture development. Using the data of outcrop, core, thin section, logging, seismic, and production performance, the differences of natural fractures in development characteristics, formation periods, genesis, and spatial distribution were clarified through fracture parameter statistics, sensitivity analysis of seismic attributes, and numerical simulation of tectonic stress field. Three types of fractures, i.e. diagenetic fractures, tectonic fractures, and composite fractures, corresponding to three development periods are found in the study area. The development of these fractures is controlled by the coupling of tectonics, sedimentation, and karstification. Favorable fracture development zones are identified in oblique-overlap zones, intersections of major and secondary faults, fault tips, algal reef facies belts, and tops and bottoms of karst caves.

Key words: Tarim Basin, carbonate rock, natural fracture, difference, tectonics, sedimentation, karstification

中图分类号:

TE122.2

李辉, 宁亚鑫. 超深层碳酸盐岩储集层天然裂缝发育差异性——以塔里木盆地YUEM地区为例[J]. 新疆石油地质, 2025, 46(2): 144-153.

LI Hui, NING Yaxin. Differences in Natural Fracture Development in Ultra-Deep Carbonate Reservoirs: A Case Study of YUEM Area in Tarim Basin[J]. Xinjiang Petroleum Geology, 2025, 46(2): 144-153.

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与断层面距离/m	油井数/ 口	初期平均日产油量/t	初期日产油量大于30 t井占比/%	平均单井累计产油量/10⁴ t
<1 000	129	60.5	89	1.85
>1 000	72	41.1	11	0.84

井名	裂缝发育分区	累计产油量 /10⁴ t	累计产气量 /10⁸ m³
YUEM2-1井	裂缝密集发育区	10.70	0.46
YUEM5井	裂缝密集发育区	13.57	0.70
YUEM5-5井	裂缝密集发育区	9.68	0.47
YUEM6井	裂缝有利发育区	3.54	0.22
YUEM5-1井	裂缝有利发育区	5.94	0.25
YUEM2井	裂缝较发育区	1.61	0.01