Abstract
To calculate the in-situ stress of tight sandstone reservoir by density logging curve and DTL logging curve is a commonly technical measure in oilfield. However, the deficiency of density logging curve may be caused by the absence of density logging in the field testing, which makes it impossible to calculate the in-situ stress of tight sandstone reservoir. Based on this, taking the Wuqi Chang 6 reservoir in western Ordos Basin as the research object, we firstly use the DTL logging curve to reconstruct the density logging curve and verify the reconstructing density logging curve equation by RMSE and MAE. Secondly, we calculate the vertical stress and horizontal stress by density logging curve and Huang's model respectively. Finally, the accuracy of the calculation method is verified with the published reservoir stress data in the study area. This study can provide a new method and guidance for calculating the in-situ stress of tight sandstone reservoir when the density logging curve deficient in the 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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Acknowledgments
The project is supported by National Natural Science Foundation (Number 52074223). Youth Project of National Natural Science Foundation of China [Grant No. 52004219]. The Scientifc Research Program Funded by Shaanxi Provincial Education Department [Grant No. 20JS117]. The Natural Science Basic Research Program of Shaanxi [Grant No. 2020JQ-781].
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Su, Zz., Li, Tt., Bai, Mx., Zhan, J., Zhou, Zj., Wang, Xy. (2023). A Noval Calculation Method of In-Situ Stress in Tight Sandstone Reservoir When Density Logging Curve Deficient. 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_12
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DOI: https://doi.org/10.1007/978-981-99-1964-2_12
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