Abstract
In recent years, with the continuous increase of exploration and development efforts, good natural gas resources have been discovered in southeast Ordos Basin, and a number of gas wells with high gas production have been drilled. Among them, the gas test open flow capacity of the Benxi Formation in Well S104 reached more than 100 × 104 m3/d, which shows the development potential of the Benxi formation sandstone reservoir. Tidal sand dam sedimentary microfacies is developed in the Benxi Formation, the sand bodies are small in scale and are elongated and discontinuous. The content of quartz in detritus is 98.9%, the pore types are mainly intergranular pores, the average porosity is 6.7%, the average permeability is 0.7 millidarcy, the reservoir physical property of Benxi formation is good, and the single well production is high. On the basis of geological research, combining with the data of production test and production performance of gas wells, then using dynamic analysis method, empirical method and RTA method in this paper, it is comprehensively proved that the rational production rate of vertical wells in the Benxi formation in the southeast of the basin is 1.3 × 104 m3/d in the first three years, with a decline rate of 34.8% in the first year, an average decline rate of 28.8% in the first three years, and a cumulative production of 2357 × 104 m3 in 15 years, as a result, effectively guiding the development of gas field.
Copyright 2022, IFEDC Organizing Committee.
This paper was prepared for presentation at the 2022 International Field Exploration and Development Conference in Xi’an, China, 16–18 November 2022.
This paper was selected for presentation by the IFEDC Committee following review of information contained in an abstract submitted by the author(s). Contents of the paper, as presented, have not been reviewed by the IFEDC Technical Team and are subject to correction by the author(s). The material does not necessarily reflect any position of the IFEDC Technical Committee its members. Papers presented at the Conference are subject to publication review by Professional Team of IFEDC Technical Committee. Electronic reproduction, distribution, or storage of any part of this paper for commercial purposes without the written consent of IFEDC Organizing Committee is prohibited. Permission to reproduce in print is restricted to an abstract of not more than 300 words; illustrations may not be copied. The abstract must contain conspicuous acknowledgment of IFEDC. Contact email: paper@ifedc.org.
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Du, Yf., Wei, Jy., Liu, C., Hu, Ww. (2023). Productivity Evaluation of Gas Wells in Sandstone Reservoirs of Benxi Formation in Southeast Ordos Basin. 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_106
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