Z4变质岩潜山油藏裂缝特征及地震预测

doi:10.7657/XJPG20240502

新疆石油地质 ›› 2024, Vol. 45 ›› Issue (5): 516-521.doi: 10.7657/XJPG20240502

Z4变质岩潜山油藏裂缝特征及地震预测

丁圣¹(), 刘金华²(), 尚娅敏³, 彭湃⁴, 傅劲翔⁴

1.中石化石油物探技术研究院有限公司，南京 211103
2.西南石油大学地球科学与技术学院，成都 610500
3.中国石油新疆油田分公司采油二厂，新疆克拉玛依 834008
4.中国石油川庆钻探工程有限公司地质勘探开发研究院，成都 610051

收稿日期:2024-01-19 修回日期:2024-02-12 出版日期:2024-10-01 发布日期:2024-10-09
通讯作者: 刘金华（1981-），男，山东昌乐人，副教授，博士，油气开发地质，（Tel）15262248940（Email）499504140@qq.com
作者简介:丁圣（1978-），男，安徽潜山人，高级工程师，地震资料解释，（Tel）15949087531（Email）ds3108@126.com
基金资助:
国家自然科学基金企业创新发展联合基金项目(U23B6010)

Fracture Characteristics and Seismic Prediction of Z4 Metamorphic Buried-Hill Reservoir

DING Sheng¹(), LIU Jinhua²(), SHANG Yamin³, PENG Pai⁴, FU Jinxiang⁴

1. Geophysical Research Institute, Sinopec, Nanjing, Jiangsu 211103, China
2. School of Geosciences and Technology, Southwest Petroleum University, Chengdu, Sichuan 610500, China
3. No.2 Oil Production Plant, Xinjiang Oilfield Company, PetroChina, Karamay, Xinjiang 834008, China
4. Geological Exploration and Development Research Institute, Chuanqing Drilling Engineering Company Limited, CNPC, Chengdu, Sichuan 610051, China

Received:2024-01-19 Revised:2024-02-12 Online:2024-10-01 Published:2024-10-09

摘要/Abstract

摘要：

裂缝地震预测是裂缝型油藏评价的基础。变质岩潜山油藏具有裂缝类型多、不同部位裂缝发育程度差异大、裂缝非均质性强、预测难度大等特征，针对Z4变质岩潜山油藏开展裂缝特征及地震预测研究。Z4潜山油藏裂缝发育程度具有成层性，可分为4段：顶部风化-半充填裂缝段、上部网状裂缝发育段（发育程度高）、中部低角度裂缝发育段（发育程度中等）和下部高角度裂缝发育段（发育程度低）。提出了综合多尺度通用谱分解、倾角导向的本征值相干处理和迭代蚂蚁体分析的综合裂缝预测技术。将岩心上裂缝产状及发育程度与地震预测结果进行对比，结果显示吻合度较高，提出的多方法综合裂缝地震预测具有较高的准确性。

关键词: 东营凹陷, Z4潜山油藏, 变质岩, 裂缝特征, 地震预测, 蚂蚁体

Abstract:

Seismic prediction of fractures is the foundation of fractured reservoir evaluation. Metamorphic buried-hill reservoirs exhibit diverse fracture types, significant variations in fracture development at different reservoir parts, and difficulties in describing fracture heterogeneity. The Z4 metamorphic buried-hill reservoir was investigated for its fracture characteristics and seismic prediction. The development of fractures in the Z4 reservoir has layering characteristics and can be divided into four sections such as weathered-semi-filled fractures at the top, highly developed net-like fractures in the upper part, moderately developed low-angle fractures in the middle part, and poorly developed high-angle fractures at the bottom. A comprehensive fracture prediction technique was proposed, which integrates multi-scale general spectral decomposition, dip-oriented eigenvalue coherent processing, and iterative ant analysis. The fracture orientations and development revealed by cores were compared with the results of seismic prediction, suggesting a high consistency. It is believed that the multi-approach comprehensive fracture seismic prediction technology proposed in this study has high accuracy.

Key words: Dongying sag, Z4 buried-hill reservoir, metamorphic rock, fracture characteristic, seismic prediction, ant

中图分类号:

TE122

丁圣, 刘金华, 尚娅敏, 彭湃, 傅劲翔. Z4变质岩潜山油藏裂缝特征及地震预测[J]. 新疆石油地质, 2024, 45(5): 516-521.

DING Sheng, LIU Jinhua, SHANG Yamin, PENG Pai, FU Jinxiang. Fracture Characteristics and Seismic Prediction of Z4 Metamorphic Buried-Hill Reservoir[J]. Xinjiang Petroleum Geology, 2024, 45(5): 516-521.

图/表 5

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地层段	深度/ m	样品数/ 个	总孔隙度/%
地层段	深度/ m	样品数/ 个	最大值	最小值	平均值
1段、2段	1 533—1 605	46	15.5	0.3	4.49
3段	1 605—1 632	26	9.0	0.2	2.97
4段	1 632—1 700	6	11.0	1.6	3.45

Z4变质岩潜山油藏裂缝特征及地震预测

Fracture Characteristics and Seismic Prediction of Z4 Metamorphic Buried-Hill Reservoir

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