多尺度多元约束的断控岩溶储集体建模

doi:10.7657/XJPG20240611

摘要/Abstract

摘要：

断控岩溶缝洞型油藏断裂系统发育，储集空间复杂，离散性和非均质性极强，油藏断裂系统建模困难。以断控岩溶储集体发育成因规律为指导，提出多尺度、多元约束相结合的方法建立断控岩溶储集体模型。依据断控岩溶成因，将储集体发育划分为4个阶段，以成熟阶段的储集体模式为指导，将断控岩溶储集体划分为溶洞相、溶蚀孔洞相和溶蚀裂缝相；采用蚂蚁体重采样、断距模型和裂缝参数表征的多元约束，建立裂缝发育概率体，采用基于目标的模拟算法，生成北西—南东向和北东—南西向2组小尺度裂缝，建立断控岩溶的裂缝模型，最大程度上体现断控岩溶裂缝发育特征，降低裂缝预测的不确定性，形成断控岩溶储集体预测新方法；2口井验证模型可靠性强，可支持后续开发研究。

关键词: 塔河油田, 碳酸盐岩, 缝洞型油藏, 断控岩溶, 地质建模, 裂缝表征

Abstract:

Fault-controlled karst fractured-vuggy reservoirs that are characterized by well-developed fault systems exhibit complex reservoir spaces with significant discreteness and heterogeneity, posing great challenges to fault system modeling and description. Guided by the developmental and genetic patterns of fault-controlled karst reservoirs, a multi-scale and multi-constraint geological model of fault-controlled karst reservoir was established. Depending on the genesis of fault-controlled karst, the development of these reservoirs was divided into four stages (Ⅰ-Ⅳ). Based on the reservoir model of Stage Ⅳ, the fault-controlled karst reservoirs were divided into karst cave facies, dissolution pore facies, and dissolution fracture facies. A fracture development probability cube was constructed with multiple constraints which include ant weight sampling, fault displacement model, and fracture parameter characterization, and two groups of small-scale fractures of NW-SE and NE-SW trending were generated by applying a goal-oriented simulation algorithm. A fracture model of fault-controlled karst was established to reflect the development characteristics of the fractures in fault-controlled karst to the greatest extent, for reducing the uncertainty in fracture prediction. Thus, a new method for predicting fractures in fault-controlled karst reservoirs was formed. The reliability of the proposed model has been validated by the application in two wells, which may support subsequent development research.

Key words: Tahe oilfield, carbonate rock, fractured-vuggy reservoir, fault-controlled karst, geological modeling, fracture characterization

中图分类号:

P618.13

李吉康, 曾清勇, 郭臣, 李青, 朱乐乐. 多尺度多元约束的断控岩溶储集体建模[J]. 新疆石油地质, 2024, 45(6): 719-724.

LI Jikang, ZENG Qingyong, GUO Chen, LI Qing, ZHU Lele. Multi-Scale and Multi-Constraint Geological Modeling of Fault-Controlled Karst Reservoirs[J]. Xinjiang Petroleum Geology, 2024, 45(6): 719-724.

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参考文献 19

[1]	李阳, 吴胜和, 侯加根, 等. 油气藏开发地质研究进展与展望[J]. 石油勘探与开发, 2017, 44(4):569-579. doi: 10.11698/PED.2017.04.10
	LI Yang, WU Shenghe, HOU Jiagen, et al. Progress and prospects of reservoir development geology[J]. Petroleum Exploration and Development, 2017, 44(4):569-579.
[2]	巫波, 杨文东, 吕晶, 等. 塔河油田缝洞型储集层类型综合识别[J]. 新疆石油地质, 2023, 44(2):238-244.
	WU Bo, YANG Wendong, LYU Jing, et al. Comprehensive identification of fractured-vuggy reservoirs in Tahe oilfield[J]. Xinjiang Petroleum Geology, 2023, 44(2):238-244.
[3]	邓光校, 胡文革, 王震. 碳酸盐岩缝洞储集体分尺度量化表征[J]. 新疆石油地质, 2021, 42(2):232-237.
	DENG Guangxiao, HU Wenge, WANG Zhen. Quantitative characterization of fractured-vuggy carbonate reservoirs[J]. Xinjiang Petroleum Geology, 2021, 42(2):232-237.
[4]	张骥跃, 康志宏, 陈华鑫, 等. 碳酸盐岩储集层岩溶洞穴垮塌的力学机制[J]. 新疆石油地质, 2023, 44(5):618-625.
	ZHANG Jiyue, KANG Zhihong, CHEN Huaxin, et al. Mechanical mechanism of karst cave collapse in carbonate reservoirs[J]. Xinjiang Petroleum Geology, 2023, 44(5):618-625.
[5]	胡文革. 塔里木盆地塔河油田潜山区古岩溶缝洞类型及其改造作用[J]. 石油与天然气地质, 2022, 43(1):43-53.
	HU Wenge. Paleokarst fractured-cavity types and their reconstruction in buried hill area,Tahe oilfield,Tarim basin[J]. Oil & Gas Geology, 2022, 43(1):43-53.
[6]	商晓飞, 段太忠, 张文彪, 等. 断控岩溶主控的缝洞型碳酸盐岩内部溶蚀相带表征:以塔河油田10区奥陶系油藏为例[J]. 石油学报, 2020, 41(3):329-341. doi: 10.7623/syxb202003007
	SHANG Xiaofei, DUAN Taizhong, ZHANG Wenbiao, et al. Characterization of dissolution facies belt in fracture-cavity carbonate rocks mainly controlled by fault-controlling karst:A case study of Ordovician reservoirs in the Block 10 of Tahe oilfield[J]. Acta Petrolei Sinica, 2020, 41(3):329-341. doi: 10.7623/syxb202003007
[7]	林庆富, 马颖忆. 随机建模技术在碳酸盐岩储集层中的应用[J]. 金陵科技学院学报, 2020, 36(2):41-46.
	LIN Qingfu, MA Yingyi. Application of stochastic simulation technique in carbonate reservoir[J]. Journal of Jinling Institute of Technology, 2020, 36(2):41-46.
[8]	吕心瑞, 韩东, 李红凯. 缝洞型油藏储集体分类建模方法研究[J]. 西南石油大学学报(自然科学版), 2018, 40(1):68-77.
	LYU Xinrui, HAN Dong, LI Hongkai. Study on the classification and modeling of fracture-vug oil deposits[J]. Journal of Southwest Petroleum University(Science & Technology Edition), 2018, 40(1):68-77.
[9]	何治亮, 孙建芳, 郭攀红, 等. 碳酸盐岩储集层知识库构建方法及其在缝洞型油藏地质建模中的应用[J]. 石油勘探与开发, 2021, 48(4):710-718. doi: 10.11698/PED.2021.04.04
	HE Zhiliang, SUN Jianfang, GUO Panhong, et al. Construction method of carbonate reservoir knowledge base and its application in fracture-cavity reservoir geological modeling[J]. Petroleum Exploration and Development, 2021, 48(4):710-718.
[10]	谢鹏飞, 侯加根, 汪彦, 等. 碳酸盐岩缝洞型储集层多元信息融合建模方法在塔河油田十二区奥陶系油藏的应用[J]. 中国石油大学学报(自然科学版), 2023, 47(3):1-14.
	XIE Pengfei, HOU Jiagen, WANG Yan, et al. Application of multi-information fusion modeling of fracture-vuggy reservoir in Ordovician reservoir of 12th block in Tahe oilfield[J]. Journal of China University of Petroleum(Edition of Natural Science), 2023, 47(3):1-14.
[11]	张文彪, 张亚雄, 段太忠, 等. 塔里木盆地塔河油田托甫台区奥陶系碳酸盐岩断溶体系层次建模方法[J]. 石油与天然气地质, 2022, 43(1):207-218.
	ZHANG Wenbiao, ZHANG Yaxiong, DUAN Taizhong, et al. Hierarchy modeling of the Ordovician fault-karst carbonate reservoir in Tuoputai area,Tahe oilfield,Tarim basin,NW China[J]. Oil & Gas Geology, 2022, 43(1):207-218.
[12]	KOUASSI A K F. 塔河油田A区奥陶系碳酸盐岩缝洞型储集层岩溶古地貌综合建模研究[D]. 武汉: 中国地质大学(武汉), 2023.
	KOUASSI A K F. Integrated modeling of karst palaeogeomorphology units in the fractured-vuggy Ordovician carbonate reservoir of Block A,Tahe oilfield,northern Tarim basin,China[D]. Wuhan: China University of Geosciences(Wuhan), 2023.
[13]	蒋超. 塔河油田典型缝洞单元多点地质统计学建模研究[D]. 北京: 中国石油大学(北京), 2022.
	JIANG Chao. Study on the multi-point geostatistical modeling of typical fracture-cavity units in Tahe oilfield[D]. Beijing: China University of Petroleum(Beijing), 2022.
[14]	邓晓娟, 李勇, 刘志良, 等. 多尺度缝洞型碳酸盐岩油藏不确定性建模方法[J]. 石油学报, 2018, 39(9):1051-1062. doi: 10.7623/syxb201809009
	DENG Xiaojuan, LI Yong, LIU Zhiliang, et al. Uncertainty modeling method of multi-scale fracture-cave carbonate reservoir[J]. Acta Petrolei Sinica, 2018, 39(9):1051-1062. doi: 10.7623/syxb201809009
[15]	胡向阳, 李阳, 权莲顺, 等. 碳酸盐岩缝洞型油藏三维地质建模方法:以塔河油田四区奥陶系油藏为例[J]. 石油与天然气地质, 2013, 34(3):383-387.
	HU Xiangyang, LI Yang, QUAN Lianshun, et al. Three-dimensional geological modeling of fractured-vuggy carbonate reservoirs:A case from the Ordovician reservoirs in Tahe-Ⅳ block,Tahe oilfield[J]. Oil & Gas Geology, 2013, 34(3):383-387.
[16]	张娟, 杨敏, 谢润成, 等. 塔里木盆地塔河油田4区和6区奥陶系小尺度缝洞储集体概率识别方法[J]. 石油与天然气地质, 2022, 43(1):219-228.
	ZHANG Juan, YANG Min, XIE Runcheng, et al. Probability-constrained identification of Ordovician small-scale fractured-vuggy reservoirs in Blocks 4-6,Tahe oilfield,Tarim basin[J]. Oil & Gas Geology, 2022, 43(1):219-228.
[17]	李阳, 侯加根, 李永强. 碳酸盐岩缝洞型储集体特征及分类分级地质建模[J]. 石油勘探与开发, 2016, 43(4):600-606. doi: 10.11698/PED.2016.04.12
	LI Yang, HOU Jiagen, LI Yongqiang. Features and hierarchical modeling of carbonate fracture-cavity reservoirs[J]. Petroleum Exploration and Development, 2016, 43(4):600-606.
[18]	李阳, 康志江, 薛兆杰, 等. 碳酸盐岩深层油气开发技术助推我国石油工业快速发展[J]. 石油科技论坛, 2021, 40(3):33-42.
	LI Yang, KANG Zhijiang, XUE Zhaojie, et al. Deep carbonate oil and gas development technology fuels China’s petroleum industrial development[J]. Petroleum Science and Technology Forum, 2021, 40(3):33-42.
[19]	侯加根, 胡向阳, 李阳, 等. 碳酸盐岩缝洞型油藏地质建模方法[M]. 北京: 中国石油大学出版社, 2017.
	HOU Jiagen, HU Xiangyang, LI Yang, et al. Geological modeling of paleokarst carbonate reservoirs[M]. Beijing: China University of Petroleum Press, 2017.