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中国石油勘探  2019, Vol. 24 Issue (2): 260-266    DOI: 10.3969/j.issn.1672-7703.2019.02.015
  工程技术 本期目录 | 过刊浏览 | 高级检索 |
三塘湖盆地致密油加密井体积压裂技术研究与实践
向洪1, 王志平2, 谌勇1, 刘智1, 窦睿1
1 中国石油吐哈油田公司工程技术研究院;
2 中国石油吐哈油田公司鲁克沁采油厂
Infill-well volume fracturing of tight oil reservoirs in Santanghu Basin
Xiang Hong1, Wang Zhiping2, Shen Yong1, Liu Zhi1, Dou Rui1
1 Research Institute of Engineering Technology, PetroChina Tuha Oilfield Company;
2 Lukeqin Oil Production Plant, PetroChina Tuha Oilfield Company
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摘要 三塘湖盆地马56区块致密油前期采取水平井体积压裂改造后,仍有大量的地质储量无法得到有效动用,整体采收率只有3%,各井间和缝间仍有大量剩余油可供挖潜。为了进一步提高区块致密油单井产量以及采收率,在研究和总结国内外致密油藏体积压裂效果的基础上,采取地质工程一体化攻关,针对性地提出了高密度布井+细分切割体积压裂的技术路线,即通过对井网及人工裂缝实施双加密的方式,实现井筒及裂缝对整个储层地质储量的"全覆盖",最大限度提高储层的动用程度。配套形成了井网加密、长水平段钻井、细分切割交错布缝、注水蓄能及低成本体积压裂5项关键技术。现场推广应用41口井,有效率达100%,平均单井日产油26.2t,累计产油量较前期基础井网提高39.7%,实现了效益开发,为区块致密油藏提高单井产量和采收率提供了技术支持。
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向洪
王志平
谌勇
刘智
窦睿
关键词 致密油藏加密井体积压裂马56区块采收率    
Abstract:In Block Ma 56 of the Santanghu Basin, a large quantity of tight oil in place remains unrecovered after stimulated by horizontal well volume fracturing, suggesting an overall recovery of only 3%. A considerable volume of remaining oil near wells and in fractures can be developed. In order to further improve the single-well productivity and recovery, the practices of volume fracturing of tight oil reservoirs around the world were reviewed. On this basis, a technology of densely-spaced wells + partitioned volume fracturing was proposed under the guidance of geological and engineering integration, that is, the densities of both well pattern and induced fractures are increased to ensure the wellbore and fracture system to cover all reserves in the reservoir, so that the reservoir productivity can be maximized. Moreover, five supporting techniques were developed, i.e. well infilling, long horizontal section drilling, partitioned and staggered fracture initiation, water injection, and low-cost volume fracturing. Application in 41 wells shows the effective rate is up to 100%, the average daily oil production per well is 26.2 tons, and the cumulative oil production increases by 39.7%. The technology is helpful to improving single-well productivity and recovery of tight reservoirs in Block Ma 56.
Key wordstight reservoir    infill well    volume fracturing    Block Ma 56    oil recovery
收稿日期: 2018-09-09      出版日期: 2019-03-15
ZTFLH:     
基金资助:中国石油天然气股份有限公司项目“吐哈油田密油储层改造技术现场试验”(2015CGCGZ007)。
引用本文:   
向洪, 王志平, 谌勇, 刘智, 窦睿. 三塘湖盆地致密油加密井体积压裂技术研究与实践[J]. 中国石油勘探, 2019, 24(2): 260-266.
Xiang Hong, Wang Zhiping, Shen Yong, Liu Zhi, Dou Rui. Infill-well volume fracturing of tight oil reservoirs in Santanghu Basin. China Petroleum Exploration, 2019, 24(2): 260-266.
链接本文:  
http://www.cped.cn/CN/10.3969/j.issn.1672-7703.2019.02.015      或      http://www.cped.cn/CN/Y2019/V24/I2/260
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