Abstract
In recent years, fine stratified water injection work has been carried out in Changqing oilfield. The number of injection wells has exceeded 10,000, and the injection rate is nearly 50%. Fine stratified water injection technology has become one of the key technologies for sustainable and stable production in Changqing. However, due to the influence of monitoring means and injection structure, it is difficult to evaluate the effect of stratified injection. According to the characteristics of Changqing low permeability reservoir, 12 evaluation parameters were selected based on the single sand body characterization results and understanding, combined with numerical simulation. By using grey relational analysis method, the quantitative evaluation criteria of fine stratified water injection in low permeability reservoir are established by calculating the correlation degree and weight coefficient, determining the classification limit of quantitative parameters and determining the evaluation system. The effect of fractional injection is divided into three levels, and the effect of fine layer injection is analyzed from macroscopic and microscopic aspects. The results show that stratified water injection can better improve the longitudinal water absorption, improve the water driving degree, and achieve the purpose of decreasing decline and enhancing recovery.
Copyright 2023, IFEDC Organizing Committee.
This paper was prepared for presentation at the 2023 International Field Exploration and Development Conference in Wuhan, China, 20–22 September 2023.
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.
Access this chapter
Tax calculation will be finalised at checkout
Purchases are for personal use only
References
Yan, H., Sun, W.: Identification and quantitative analysis of interlayer in underwater distributary channel sand body. J. Northwest Univ. (Nat. Sci. Edn.) 36(1), 133–136 (2006)
Feng, C., Bao, Z., Yang, L., et al.: Reservoir architecture and remaining oil distribution of underwater distributary channel in delta front. Petrol. Explor. Dev. 41(03), 323–329 (2014)
Gao, J., Wang, X., Luo, H., et al.: Single sand body identification and its application in oilfield development. **njiang Oil Gas. 13(03), 37-42 (2017)
Xue, L.A.N.: Fine characterization of single sand body in fluvial tight reservoir. Petrol. Knowl. 04, 38–39 (2019)
Reservoir architecture and fine characterization of remaining oil of Chang 3 Formation in Zhenbei Oilfield, Ordos Basin. Lithologic Reservoirs (06), 177–188 (2021)
Qu, M., Wu, Q., Zou, Y., Luo, G., Zhao, X., Chen, Z.: Characterization and application of single sand body in Jurassic edge and bottom water reservoir in J Oilfield. Petrochemical Appl. 40(06), 112–114 (2021)
Wang, X., Wang, W., Chen, S., et al.: Evaluation of stratified water injection in low permeability reservoir. Petrochemical Technol. 26(04), 304 (2019)
Gao, D., et al.: Evaluation of fine stratified water injection based on Lorentz curve model. Petrol. Explor. Dev. 42(6), 787–792 (2015)
Lu, X., Zhang, C., Li, C., Gou, Y.: Effect analysis of fine stratified water injection in Hu 154 block of Hujianshan Oilfield. Ground Water 35(2), 33–36 (2013)
Lin, Y., Li, L., Shang, K., Zhao, N.: Analysis of waterflooding in fine layers to improve development effect of Huwolmao Chang6 reservoir. Ind. Technol. (10), 101–102 (2015)
Ling, W., Kai, W., Qigui, Y., Yanqing, M., Gang, B.: Application and effect evaluation of fine stratified water injection technology in Dalugou Second Distric. Proc. 10th Ningxia Young Sci. Forum. 122–123 (2014)
Yu**, W., Wei, S., Chi, W., et al.: Reservoir comprehensive evaluation based on cluster analysis and grey correlation analysis: a case study of Chang 61 reservoir in Jiyuan area, Ordos Basin. Oil Gas Reservoir Eval. Dev. 8(1), 12–15 (2018)
Honglong, X., Jian, L., Cheng, Q., et al.: Application of grey correlation analysis method in reservoir evaluation of Shuanghe Oilfield. Oil Gas Reservoir Eval. Dev. 5(5), 17–21 (2015)
Dairong, Z.: Application of grey correlation analysis method to grade evaluation of remaining recoverable reserves. Fault-block Oil Gas Field 40(3), 354–356 (2013)
Kuang Jianchao, X., Guosheng, W.Y.: Application of grey correlation analysis to reservoir performance description. J. Mineral. Petrol. 02, 69–73 (2000)
Changqing Oilfield Company of petrochina Co., Ltd. Technical Specification for classification and Classification of development level of Different Types of reservoirs in Changqing Oilfield :Q/SY –2016. Changqing Oilfield Company, Petrochina Limited, **’an (2016)
Mingquan, Y., Haijun, W.: Profile control test and effect analysis of stratified water injection in bai153 district. China Petrol. Chem. Stand. Qual. 2, 183 (2013)
Chen, L.: Analysis and discussion on the effect of stratified water injection in waterflooding oilfield. China Petrol. Chem. Stand. Qual. 12, 124 (2012)
Guangdong, H., **g**g, H.: Study on stratified water injection technology of Triassic ultra-low permeability reservoir in Changqing Oilfield. Fault-block Oil Gas Field 15(2), 110–112 (2008)
Yu, L., Tang, H., Lv, D., et al. Study on the influence of heterogeneity on the sweep coefficient of water flooding area in Jiangsu Oilfield. J. Chongqing Univ. Sci. Technol. (Nat. Sci. Edn.), 13(3), 74–76 (2011)
Qiao, W., Long, C.: Feasibility study on reservoir heterogeneity and stratified water flooding. Coal Mine Modern 4, 128–130 (2014)
Fusheng, H., Yongsheng, Z.: Research on optimal classification simulation of subdivision water flooding in high water cut sandstone oilfield. Petrol. Geol. Oilfield Dev. Daqing 17(2), 30–31 (1998)
Wantao, L., Tian**g, H., Yongxing, Y., et al.: Numerical simulation and application of stratified waterflooding in ultra-low permeability reservoir. Complex Oil Reservoirs 4, 53–56 (2015)
Acknowledgments
The project is supported by National Science and Technology Project. Key technologies for improving the development effect of ultra-low permeability reservoirs (No. 2017ZX05013–004).
Author information
Authors and Affiliations
Corresponding author
Editor information
Editors and Affiliations
Ethics declarations
Conflict of Interests
The authors declare no conflict of interest.
Rights and permissions
Copyright information
© 2024 The Author(s), under exclusive license to Springer Nature Singapore Pte Ltd.
About this paper
Cite this paper
Wang, Sy., Li, Hc., Song, L., **g, W., Lu, Xj. (2024). Stratified Water Injection Effect Evaluation and Field Practice Based on Single Sand Body Understanding. In: Lin, J. (eds) Proceedings of the International Field Exploration and Development Conference 2023. IFEDC 2023. Springer Series in Geomechanics and Geoengineering. Springer, Singapore. https://doi.org/10.1007/978-981-97-0475-0_22
Download citation
DOI: https://doi.org/10.1007/978-981-97-0475-0_22
Published:
Publisher Name: Springer, Singapore
Print ISBN: 978-981-97-0474-3
Online ISBN: 978-981-97-0475-0
eBook Packages: EngineeringEngineering (R0)