西加盆地Cardium组不同类型储层开发特征及潜力评价
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中国石化石油勘探开发研究院

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TE319

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中国石油化工股份有限公司科技部项目(P19020-1)


Development features and potential evaluation of different types of reservoirs of Cardium formation, western Canada basin
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Petroleum Exploration and Production Research Institute,SINOPEC

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    摘要:

    西加盆地Cardium组为浅海滨岸相沉积,沿岸泥质海底上沉积的砾岩和砂岩形成常规油气储层,砾岩周围的低渗透泥质砂岩形成非常规致密油储层。面对多资源类型伴生格局,为实现中石化海外区块的效益开发,首先根据岩心观测与实验测试,将Cardium组A段储层划分为三类;基于生产动态数据对比了不同类型储层的开发特征差异,并通过单井概念模型对地质认识进行了验证;最后评价了权益区块不同类型储层的开发潜力,并提出了相应的挖潜对策。结果表明:根据岩性差异可将Cardium组A段储层划分为I类砾岩储层、II类砾岩储层和III类致密砂岩储层。从I类到III类,储层物性逐渐变差,开发方式由直井开发向多级压裂水平井开发转变,产能主控因素逐渐复杂化。当前权益区内I、II类储层剩余潜力濒临极限,可通过老井加密补孔进一步挖潜;III类储层具备一定开发潜力,可通过部署批量水平井实现有效开发。

    Abstract:

    The sedimentary environment of Cardium formation in western Canada basin is the shallow sea coastal face. The conventional oil and gas reservoir was formed from the conglomerate and sandstone deposited on the coastal muddy seafloor. The unconventional tight oil reservoir was formed from the low-permeable argillaceous sandstone around the conglomerate. Faced with the coexistence of different types of resources and in order to realize the benefit development of SINOPEC oversea blocks, the member A of Cardium formation was firstly divided into three types according to the core observation and experiment test. The development features of different types of reservoirs were compared based on the production dynamic data and the geological knowledge was verified via single well theoretical models. Finally, the development potential of different types of reservoirs in the interest block were evaluated and the corresponding development strategies were put forward. The results show that the member A of Cardium formation can be classified into type I conglomerate reservoir, type Ⅱ conglomerate reservoir and type III tight sandstone reservoir according to the lithology differences. The reservoir physical properties gradually weakened and the productivity controlling factors complicated from type I to type Ⅲ, with a transition from vertical well development to multistage fracturing horizontal well development. Currently, type I and II reservoir in the interest block have a limited residual potential, which can be further released through reperforations on some old wells. Type III reservoir has a certain development potential, which can be effectively released through deployment of large numbers of horizontal wells.

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吴双,滕彬彬,项云飞,等. 西加盆地Cardium组不同类型储层开发特征及潜力评价[J]. 科学技术与工程, , ():

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  • 收稿日期:2023-08-16
  • 最后修改日期:2024-03-15
  • 录用日期:2024-03-21
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