中国石油勘探 ›› 2025, Vol. 30 ›› Issue (2): 84-97.DOI: 10.3969/j.issn.1672-7703.2025.02.007

• 石油地质 • 上一篇    下一篇

蓬莱气田db1区震旦系灯影组四段深层碳酸盐岩储层分类预测

张飞1,张浪2,张连进1,刘微1,欧成华2,毛正林1,2,徐睿1,黄润峰2   

  1. 1 中国石油西南油气田公司;2 西南石油大学国家重点实验室
  • 出版日期:2025-03-14 发布日期:2025-03-14
  • 作者简介:张飞(1990-),男,湖北潜江人,博士,2018 年毕业于中国石油大学(北京),高级工程师,从事气田开发研究工作。地址:四川省成都市武侯区天府大道北段12 号,邮政编码:610095。
  • 基金资助:
    油气勘探开发国家科技重大专项资助“松辽盆地白垩系陆相页岩油勘探开发技术与集成示范”(2024ZD14049-004);四川科教联合基金重点项目“页岩储层天然裂缝跨视域表征与二氧化碳协同压驱控制机理研究”(2024NSFSC1960)

Classification and prediction of deep carbonate reservoirs in the fourth member of the Sinian Dengying Formation in db1 block, Penglai Gas Field

Zhang Fei1, Zhang Lang2, Zhang Lianjin1, Liu Wei1, Ou Chenghua2, Mao Zhenglin1,2, Xu Rui1, Huang Runfeng2   

  1. 1 PetroChina Southwest Oil & Gasfield Company; 2 State Key Laboratory of Oil and Gas Reservoir Geology and Exploitation, Southwest Petroleum University
  • Online:2025-03-14 Published:2025-03-14

摘要: 四川盆地蓬莱气田灯四段碳酸盐岩储层是中国陆上石油“十四五”增储上产的重点目标之一,年代古老,埋藏深,非均质性强,空间分布难以预测。为此,围绕蓬莱气田db1 区的地质、钻井、测井和地震特征,建立深层碳酸盐岩储层井震一体化分类预测技术,解析深层碳酸盐岩成储特征及储层分布模式,实施储层非均质分布的反演及预测,精细刻画储层空间分布的非均质性。结果表明:(1)蓬莱气田灯影组四段储层集中分布在上亚段,呈现出上下两套储层,上储层局部分布、下储层发育,仅一套储层发育等3 种构型模式;(2)储层分类预测成果显示,研究区好储层和中等储层厚度较小、分布零散,差储层厚度大、纵横向分布连片性较好,平面分布在ps106 井、db1 井、ps11 井及其邻近区域;(3)深层碳酸盐岩储层分类及分布预测的成功,在验证所建技术适用性与可靠性的同时,也为蓬莱及类似气田储层分布预测提供了有益借鉴。

关键词: 蓬莱气田, 深层碳酸盐储层, 储层预测, 井震一体化预测, 储层分布非均质性

Abstract: The carbonate reservoirs in the fourth member of Dengying Formation (Deng 4 member) in Penglai Gas Field, Sichuan Basin,
are one of the key targets for increasing reserves and production in onshore petroleum exploration during the 14th Five–Year Plan period. Due to the ancient age, great burial depth, and high heterogeneity, the reservoir spatial distribution prediction remains challenging. Based on geological, drilling, logging and seismic characteristics, a well–seismic integrated classification and prediction technology has been established for deep carbonate reservoirs in db1 block, Penglai Gas Field, which enables analyzing formation characteristics and distribution pattern of deep carbonate reservoirs, conducting inversion and prediction of heterogeneous reservoir distribution, and finely characterizing the heterogeneity of reservoir spatial distribution. The study results indicate that: (1) Deng 4 member reservoirs are concentrated in the upper sub-member, with three configuration patterns, i.e., dual upper and lower reservoirs, locally distributed upper reservoir and well-developed lower reservoir, and a single reservoir. (2) The good and medium reservoirs in the study area have a small thickness and sporadic distribution, while the poor reservoir has a great thickness and good continuity in both vertical and lateral directions, which is primarily distributed near wells ps106, db1, ps11, and adjacent areas. (3) The successful classification and prediction of deep carbonate reservoirs not only validate the applicability and reliability of the developed technology, but also provide valuable references for reservoir prediction in Penglai Gas Field and similar gas fields.

Key words: Penglai Gas Field, deep carbonate reservoir, reservoir prediction, well-seismic integrated prediction, heterogeneity of reservoir distribution

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