渤中凹陷深埋海相碳酸盐岩潜山地震储层预测技术研究
Research on seismic reservoir prediction technology for deeply buried marine carbonate rock buried hill in Bozhong Sag
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- 引用格式:
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王思权,刁俊才,秦德海,孙哲.渤中凹陷深埋海相碳酸盐岩潜山地震储层预测技术研究[J].天然气与石油,2025,43(2):81-89.doi:10.3969/j.issn.1006-5539.2025.02.011
WANG Siquan, DIAO Juncai, QIN Dehai, SUN Zhe.Research on seismic reservoir prediction technology for deeply buried marine carbonate rock buried hill in Bozhong Sag[J].Natural Gas and Oil,2025,43(2):81-89.doi:10.3969/j.issn.1006-5539.2025.02.011
- DOI:
- 10.3969/j.issn.1006-5539.2025.02.011
- 作者:
- 王思权 刁俊才 秦德海 孙哲
WANG Siquan, DIAO Juncai, QIN Dehai, SUN Zhe
- 作者单位:
- 中海石油(中国)有限公司天津分公司渤海石油研究院, 天津 300459
Bohai Oilfield Research Institute, CNOOC China Ltd., Tianjin Branch, Tianjin, 300459, China
- 关键词:
- 碳酸盐岩潜山;光滑反射强度滤波;储层敏感因子;叠前弹性参数反演
Carbonate rock buried hill; Smooth reflection intensity filtering; Reservoir sensitive factor; Pre-stack elastic parameter inversion
- 摘要:
- 渤中凹陷海相碳酸盐岩潜山裂缝、溶蚀孔系统发育,储层非均质性强。其中渤中凹陷的B构造地震资料信噪比低、优质储层地震响应特征不明显,致使碳酸盐岩潜山地震储层预测难度较大。针对这一问题,在常规裂缝检测的基础上,引入基于光滑反射强度滤波去噪技术,优选对潜山裂缝敏感的蚂蚁体属性开展裂缝预测,形成了高精度叠后裂缝检测技术;融合对裂缝、孔隙敏感的纵波速度和对岩性敏感的密度参数,建立了抗岩性干扰的新型碳酸盐岩储层敏感因子叠前反演技术。新技术较好地实现了低信噪比条件下的高精度叠后裂缝检测,提升了复杂岩性条件下叠前弹性参数对优质储层的识别精度。经渤海B构造的成功应用表明,新技术可实现碳酸盐岩优质储层的直接预测。研究成果可为相似碳酸盐岩潜山地震储层预测提供参考。
The marine carbonate rock buried hill fracture and dissolution pore system in Bozhong Sag is well-developed, resulting in strong reservoir heterogeneity. Due to the low signal-to-noise ratio of seismic data and the unclear seismic response characteristics of high-quality reservoirs in the B structure of Bozhong Sag, it is challenging to predict the seismic response of carbonate rock buried hill reservoirs. To address this issue, based on conventional fracture detection, this paper introduces a denoising technology based on smooth reflection intensity filtering and optimizes the ant body attributes sensitive to buried hill fractures to carry out fracture prediction, forming a high-precision post-stack fracture detection technology. At the same time, a new pre-stack inversion technology for carbonate reservoir sensitive factors with anti-lithologic interference is established by integrating P-wave velocities sensitive to fractures and pores with density parameters sensitive to lithology. High-precision post-stack fracture detection under low signal-to-noise ratio is realized, and the recognition accuracy of pre-stack elastic parameters for high-quality reservoirs under complex lithology conditions is improved. The successful application in the Bohai B structure shows that the developed seismic prediction technology for marine carbonate rock buried hill reservoirs can achieve direct prediction of high-quality carbonate rock reservoirs. The research findings can provide reference for seismic reservoir prediction in carbonate rock buried hill of the same nature.
