石油学报 ›› 2024, Vol. 45 ›› Issue (9): 1399-1408.DOI: 10.7623/syxb202409007

• 油田开发 • 上一篇    

黄骅坳陷古近系细粒沉积区勘探开发认识技术迭代与页岩油增储上产成效

蒲秀刚, 柴公权, 许静, 时战楠, 韩文中, 官全胜, 刘学伟, 李昊东, 王栋, 董姜畅   

  1. 中国石油大港油田公司 天津 300280
  • 收稿日期:2024-04-01 修回日期:2024-07-11 发布日期:2024-10-10
  • 通讯作者: 许静,女,1986年2月生,2017年获西南石油大学硕士学位,现为中国石油大港油田公司高级工程师,主要从事页岩油油藏地质、油藏工程参数优化及开发方案编制相关研究工作。Email:xujing18@petrochina.com.cn
  • 作者简介:蒲秀刚,男,1968年12月生,2004年获中国矿业大学(北京)博士学位,现为中国石油大港油田公司教授级高级工程师,主要从事沉积学、储层地质学、油气地球化学及非常规油气勘探方面的研究与管理工作。Email:puxgang@petrochina.com.cn
  • 基金资助:
    中国石油天然气股份有限公司科技重大专项"陆相页岩油规模增储上产与勘探开发关键技术研究"(2023ZZ15YJ01)和国家重点研发计划项目"战略性资源开发区风险评估应用示范"(2022YFF0801204)资助。

Technological iteration and understandings of exploration and development as well as increase of shale oil reserves and production in Paleogene fine-grained sediments areas of Huanghua depression

Pu Xiugang, Chai Gongquan, Xu Jing, Shi Zhannan, Han Wenzhong, Guan Quansheng, Liu Xuewei, Li Haodong, Wang Dong, Dong Jiangchang   

  1. PetroChina Dagang Oilfield Company, Tianjin 300280, China
  • Received:2024-04-01 Revised:2024-07-11 Published:2024-10-10

摘要: 渤海湾盆地黄骅坳陷纹层型页岩油资源量为32.6×108t,是常规油资源量的1.2倍,勘探开发潜力巨大,但规模效益开发动用仍面临高产甜点层优选、复杂断块长水平段优快钻完井、均匀高效压裂改造、高效开采等多方面难题。为此,持续深化陆相纹层型页岩油"中源-高储-优保"富集条件认识,针对复杂断块陆相页岩油效益甜点评价和箱体优选、井网部署、优快钻完井、压裂改造和排采制度等方面进行了系统攻关,提出了"中高匹配"的页岩油富集规律及模式,总结形成可复制推广的多甜点"W"型立体开发布井、密切割高强度前置二氧化碳增能高效压裂、"焖井置换+高压钻塞+控压生产"高效排采等开发主体技术。迭代技术应用在沧东5号平台效益开发试验中取得了良好效果,5口试验井测试单井峰值日产量为39.6~122.3 t,截至2024年6月28日已连续自喷生产545~574 d,累积产油量为8.9×104t,建成中国首个10万吨级纹层型页岩油效益开发示范平台;进一步推广主体开发技术,歧口凹陷沙河街组三段首个先导试验平台(6号)建成投产,3口井已连续自喷生产222~225 d,累积产油量为1.64×104t。

关键词: 黄骅坳陷, 古近系, 陆相细粒区, 纹层型页岩, 页岩油, 效益勘探开发

Abstract: T he laminated shale oil resources in Huanghua depression of Bohai Bay Basin amount to 3.26 billion tons, which is 1.2 times the conventional oil resources, showing great potential for exploration and development; however, the large-scale efficient development and production still face many problems such as optimization of high-yield sweet spot layers, optimal fast drilling and well completion of long horizontal sections of complex fault blocks, uniform and efficient fracturing, and efficient mining methods. For this reason, it is essential to continuously deepen the understanding of the enrichment conditions of "medium resources-high reserves-optimal preservation" for continental laminated shale oil, achieve a systematic breakthrough in benefit evaluation of the shale oil sweet spots and box selection, well pattern arrangement, optimal fast drilling and well completion, fracturing transformation, and production system. of continental shale oil in complex fault blocks, and propose the shale oil enrichment law and model of "medium and high matching", which are summarized to form the replicable and promotable major development technologies, such as multi-sweet spot W-shaped three-dimensional development and well arrangement, dense-cutting high-strength pre-carbon dioxide energized and efficient fracturing, and highly efficient drainage and production mode of "well killing for replacement+high-pressure drilling and plugging+pressure-controlling production". The application of iterative technology has achieved good results in the beneficial development experiment of No. 5 platform in Cangdong sag. Among 5 test wells, the peak production of a single test well is 39.6-122.3 t/d, and up to June 28,2024, the self-flowing wells have produced oil continuously for 545-574 d, with a cumulative oil production of 8.9×104t. The first 100, 000 ton laminated shale oil beneficial development demonstration platform in China has been built; major development technologies have been promoted further, the first pilot test platform of No.6 block of Member 3 of Shahejie Formation in Qikou depression was built and put into operation, and three self-flowing wells have produced oil continuously for 222-225 d, with a cumulative oil production of 1.64×104t.

Key words: Huanghua depression, Paleogene, continental fine-grained area, laminated shale, shale oil, beneficial exploration and development

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