Research and Application of Retreatment Technology to Tap Remaining Oil in Chang Qing Low Permeability Oilfield
- Authors
- Zengzhi Wu (CNPC Chuanqing Drilling Engineering Co. Ltd., Drilling & Production Engineering Technology Research Institute) | Hongjiang Zou (CNPC Chuanqing Drilling Engineering Co. Ltd., Drilling & Production Engineering Technology Research Institute) | Yugong Wang (CNPC Chuanqing Drilling Engineering Co. Ltd., Drilling & Production Engineering Technology Research Institute) | Long Wu (CNPC Chuanqing Drilling Engineering Co. Ltd., Drilling & Production Engineering Technology Research Institute) | Yong Li (CNPC Chuanqing Drilling Engineering Co. Ltd., Drilling & Production Engineering Technology Research Institute) | Yang Xu (CNPC Chuanqing Drilling Engineering Co. Ltd., Drilling & Production Engineering Technology Research Institute) | Renfeng Wang (CNPC Chuanqing Drilling Engineering Co. Ltd., Drilling & Production Engineering Technology Research Institute) | QingCong Meng (CNPC Chuanqing Drilling Engineering Co. Ltd., Drilling & Production Engineering Technology Research Institute) | Wenxue Jiang (CNPC Chuanqing Drilling Engineering Co. Ltd., Drilling & Production Engineering Technology Research Institute) | Suoliang Wang (CNPC Chuanqing Drilling Engineering Co. Ltd., Drilling & Production Engineering Technology Research Institute) | Shan Li (CNPC Chuanqing Drilling Engineering Co. Ltd., Drilling & Production Engineering Technology Research Institute) | Dan Li (CNPC Chuanqing Drilling Engineering Co. Ltd., Drilling & Production Engineering Technology Research Institute)
- DOI
- https://doi.org/10.2523/IPTC-19404-MS
- Document ID
- IPTC-19404-MS
- Publisher
- International Petroleum Technology Conference
- Source
- International Petroleum Technology Conference, 26-28 March, Beijing, China
- Publication Date
- 2019
- Document Type
- Conference Paper
- Language
- English
- ISBN
- 978-1-61399-619-5
- Copyright
- 2019. International Petroleum Technology Conference
- Disciplines
- 4.3.4 Scale, 1.10 Drilling Equipment, 1.10 Drilling Equipment, 2 Well completion, 2.6 Acidizing
- Keywords
- Deep plugging, Retreatment, Remaining oil, Chang Qing Oilfield, Radial fracture network fracturing
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With the development of Chang Qing Oilfield, the following technical problems are faced: the increasing proportion of the low-production and low-efficiency wells, the worse production of pertinence and effectiveness in conventional retreatments and a large amount of remaining oil between wells and layers. In this case, the technique of radial fracture network fracturing and deep plugging has been proposed. Meanwhile, the matching products which include variable viscosity diverting acid, micro expansion high strength plugging agent and temporary plugging agent (oil soluble, water soluble and anti-scale) have been developed as well. Nowadays, the retreatment technology has been successfully tested and popularized in Chang Qing oilfield. Compared with the conventional retreatments, these two technologies have remarkable effect on increasing production and prospective application.
File Size | 1 MB | Number of Pages | 13 |