Abstract
There is no natural decline period for gas wells in the Sulige gas field, and the production declines when they are put into production. The method of stabilizing production in the gas field mainly relies on the input of new wells to make up for the decline in production of old wells. Therefore, it is the key issue to realize the long-term stable production of gas fields to accurately grasp the law of gas field decline and to clearly make up for the workload of production and construction. Based on the depletion decline theory, and assuming the same initial decline rate of production wells in different years, the calculation formula of the comprehensive decline rate in the stable production stage of the gas field is deduced, and the proportional relationship between the comprehensive decline rate and the initial decline rate is clarified. Chart of initial decline rate and stable production scale. The research results show that: in the stable production stage, the comprehensive decline rate of the gas field presents a steady trend of first decline and then rise, making up for the increase in the production and construction workload with the increase of the initial decline rate and production and construction scale. The calculation results using this method are close to the actual ones. The error is only 5%, which can accurately and quickly guide the deployment of the production capacity construction workload of similar gas fields.
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This paper was prepared for presentation at the 2022 International Field Exploration and Development Conference in Xi’an, China, 16–18 November 2022.
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Huo, Mh., Zheng, Ln., Liu, Pc., Yu, Zh. (2023). Calculation of Production Capacity Construction Workload in Sulige Gas Field Based on Comprehensive Decline Law. In: Lin, J. (eds) Proceedings of the International Field Exploration and Development Conference 2022. IFEDC 2022. Springer Series in Geomechanics and Geoengineering. Springer, Singapore. https://doi.org/10.1007/978-981-99-1964-2_483
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DOI: https://doi.org/10.1007/978-981-99-1964-2_483
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