Technical status and countermeasures of drilling and completion technology for hard-to-recover reserves in Songliao Basin

doi:10.3969/j.issn.1672-7703.2022.05.012

Abstract

Abstract: Songliao Basin has abundant hard-to-recover reserves. The economic and effective utilization of this type of resources is a realistic way to improve the degree of energy self-sufficiency in China. The key indicators such as drilling cycle and horizontal section length of tight oil wells in Songliao Basin are much worse than those in North America, Sichuan and Chongqing region, and the intensive well construction mode has not been formed yet, which show a great potential of drilling speed and efficiency improvement. The geology and engineering integrated study is conducted to increase the drilling rate of reservoir; The intensive drilling and completion technology of multi well types such as large platform well group and long horizontal well is developed to significantly increase the drilling speed; The high-performance water-based drilling fluid technology for shale oil and supporting technology for thin-layer heavy oil development are researched to reduce the complexity in drilling operations; The integrated application of advanced and applicable technologies such as near bit geo-steering system and one trip drilling technology enables to greatly improve the drilling efficiency and single well production, as well as continuously reduce the drilling cycle and operation cost of hard-to-recover reserves in Songliao Basin. The improvement of supporting drilling and completion technology will provide strong support for the high-efficiency production of hard-to-recover reserves in Songliao Basin.

CLC Number:

TE22

Qiao Lei, Liu Yishan, Che Yang, Yang Zhenke, Han Jinliang. Technical status and countermeasures of drilling and completion technology for hard-to-recover reserves in Songliao Basin[J]. China Petroleum Exploration, 2022, 27(5): 130-137.

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