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A Review of Inflow Performance Relationship of Conventional Reservoirs and Unconventional Reservoirs Read chapter Read first chapter

2024 | OriginalPaper | Chapter

Application of Modified Ethylene Glycol Fracturing Fluid in Strong Water Sensitive Formation

Authors : Yong-Chang Wang, Xian-Jun Wang, Qing-Guo Wang, Cun-Rong Li, Qing-Song Li

Published in: Proceedings of the International Field Exploration and Development Conference 2023

Publisher: Springer Nature Singapore

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Abstract

The reservoir of M Oilfield in SongLiao Basin has high clay mineral content (27.3% on average) and strong sensitivity (water sensitivity index 0.87–0.97), therefore, conventional water-based fracturing fluid can lead to serious formation damage and is difficult to meet the stimulation requirements.
In order to improve the stimulation effect of X layer, the modified ethylene glycol fracturing fluid was studied by using DMC and AMPS copolymer with good solubility as thickener and safe, environmental protection, stable performance modified ethylene glycol as solvent. The overall performance of fracturing fluid, compatibility with reservoir rock and the recycling performance of flowback fluid were carried out.
The experimental results show that the modified ethylene glycol fracturing fluid has good sand-carrying performance and gel breaking capacity, the shear viscosity of the fracturing fluid is 210.9 mPa.s after continuous shearing at 45 ℃ for 60 min, the viscosity of the gel breaking fluid is 3.86 mPa.s after 8 h at formation temperature, and the residue content is only 7.4 mg/L. It behaves the properties of low surface and interface tension, which has a surface tension of 24.7 mN/m and an interface tension of 1.17 mN/m, with a characteristics of low damage, strong sand carrying capacity and wide application range, and the flowback fluid can be reused with excellent crosslinking performance, which can meet the requirements of the stimulation of the X sensitive reservoir.
Modified ethylene glycol fracturing fluid has improved the effect of reservoir stimulation and achieved effective utilization of strong water sensitive reservoirs. 10 wells field tests were carried out with an average oil production of 4.8 t/d after fracturing, which has a good oil increase effect and providing a technical support for the reserve submission of Daqing Oilfield middle-shallow layer.

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Metadata
Title
Application of Modified Ethylene Glycol Fracturing Fluid in Strong Water Sensitive Formation
Authors
Yong-Chang Wang
Xian-Jun Wang
Qing-Guo Wang
Cun-Rong Li
Qing-Song Li
Copyright Year
2024
Publisher
Springer Nature Singapore
Book
Proceedings of the International Field Exploration and Development Conference 2023

Print ISBN: 978-981-9702-59-6

Electronic ISBN: 978-981-9702-60-2

Copyright Year: 2024

DOI
https://doi.org/10.1007/978-981-97-0260-2_93