塔河碳酸盐岩缝洞型油藏开发技术及攻关方向

doi:10.13809/j.cnki.cn32-1825/te.2020.02.001

摘要/Abstract

摘要：

碳酸盐岩缝洞型油藏是塔里木盆地勘探开发的主要油气藏类型之一,资源潜力大,前景广阔。近年来,中国石化西北油田分公司持续在塔里木盆地北部塔河油田开展碳酸盐岩缝洞型油藏勘探开发实践,在碳酸盐岩缝洞型油藏基础地质理论研究、缝洞体地震精细识别、高效开发、工程工艺等方面取得了多项认识和突破,逐步创建了较完善的碳酸盐岩油藏地质和油藏工程方法技术系列,并创新发展了多项相适应的工程工艺特色技术,实现了塔河油田碳酸盐岩油藏持续增储上产和高效开发,展现了良好的勘探开发前景,可为国内外同类油藏的勘探开发提供借鉴和参考。但如何持续效益开发碳酸盐岩缝洞型油藏,仍面临理论创新、工艺技术突破等问题和挑战,亟待开展缝洞结构描述、剩余油定量表征、井周储量动用以及稠油开采等技术的攻关突破,以期持续推动碳酸盐岩缝洞型油藏高效高质开发。

关键词: 塔河油田, 奥陶系, 碳酸盐岩, 缝洞型油藏, 缝洞识别, 油藏地质方法, 工程工艺技术

Abstract:

The fractured-vuggy carbonate reservoir is one of the main types of oil and gas reservoirs in Tarim Basin, which has great potential and broad prospect. In recent years, Sinopec Northwest Oilfield Company has continued the exploration and development for them, and has made many breakthroughs in the researches of basic geological theory of carbonate rock, seismic identification technology of fracture cavity body, and high-efficiency development engineering technology. And it has established a series of relatively perfect geological and reservoir engineering methods and technologies for carbonate reservoirs. It has realized the continuous increase of storage and production and efficient development of carbonate reservoir in Tahe oilfield, showing a good prospect of exploration and development, and also providing reference for the exploration and development of similar reservoirs at home and abroad. However, how to develop carbonate fracture-cavity reservoir sustainably also faces the problems and challenges such as theoretical innovation and technological breakthrough. It is urgent to tackle the key problems and make breakthroughs in fracture-cavity structure description, quantitative characterization of remaining oil, utilization of reserves around wells, and heavy oil recovery, so as to continuously promote high-efficiency and high-quality development of carbonate fracture-cavity reservoirs.

Key words: Tahe Oilfield, Ordovician, carbonate rock, fractured-vuggy reservoir, identification of fracture and vug, reservoir geological method, engineering technology

中图分类号:

TE344

胡文革. 塔河碳酸盐岩缝洞型油藏开发技术及攻关方向[J]. 油气藏评价与开发, 2020, 10(2): 1-10.

HU Wenge. Development technology and research direction of fractured-vuggy carbonate reservoirs in Tahe Oilfield[J]. Reservoir Evaluation and Development, 2020, 10(2): 1-10.

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序号	井号	改进容积法计算静态储量（N₁）/ 10⁴ t	体积雕刻法计算静态储量（N₂）/ 10⁴ t	动态储量（N₃）/ 10⁴ t
1	TK842	26.58	24.50	23.70
2	TK848	2.91	2.93	2.70
3	T811	68.90	55.20	53.40
4	TK839	10.45	10.60	10.00
5	TK846	15.30	13.60	12.40
6	TK674	11.20	9.80	9.00
7	TK675	49.40	35.80	33.80
8	TK405	8.20	7.10	6.50
9	T416	38.50	34.10	32.90
10	TK492	3.97	3.61	3.20
11	TK839	12.80	11.90	10.60
12	TK231	56.20	47.70	45.30

岩溶背景	油藏特点	井网构建	注入方式
风化壳	表层岩溶带、垂向渗滤岩溶带厚度大,断层控制地表河位置及规模	缝洞面积井网	大规模的周期气驱
古暗河	表层岩溶带、垂向渗滤、径流溶带发育,断层、古地貌控制地下河规模和走向	河道空间网状井网	气驱+水驱
断溶体	岩溶缝洞沿断裂走向分布,平面分段、纵向局部分隔	断裂带线状井网	气驱+水驱交替注入