Design of facile technology for the efficient removal of hydroxypropyl guar gum from fracturing fluid

With the increasing demand for energy, fracturing technology is widely used in oilfield operations over the last decades. Typically, fracturing fluids contain various additives such as cross linkers, thickeners and proppants, and so forth, which makes it possess the properties of considerably compli...

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Bibliographic Details
Published in:PloS one 2021-03, Vol.16 (3), p.e0247948
Main Authors: Xu, Shiliang, Cui, Mengke, Chen, Renjie, Qiu, Qiaoqing, Xie, Jiacai, Fan, Yuxin, Dai, Xiaohu, Dong, Bin
Format: Article
Language:English
Subjects:
Additives
Aeration
Authorship
Biocides
Biofiltration
Biological treatment
Chemical properties
Corrosion inhibitors
Crude oil
Desalination
Dissolved organic matter
Ecology and Environmental Sciences
Engineering
Engineering and Technology
Environmental science
Exploitation
Fluids
Fracturing
Guar
Guar gum
Hydraulic fracturing
Hydroxypropyl cellulose
Laboratories
Mechanical properties
Oil
Oil and gas fields
Oil exploration
Oil field equipment
Oil fields
Oil recovery
Oil wells
Petroleum production
Physical Sciences
Pollution control
Research and Analysis Methods
Reverse osmosis
Technology
Viscosity
Wastewater
Wastewater treatment
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Summary:With the increasing demand for energy, fracturing technology is widely used in oilfield operations over the last decades. Typically, fracturing fluids contain various additives such as cross linkers, thickeners and proppants, and so forth, which makes it possess the properties of considerably complicated components and difficult processing procedure. There are still some difficult points needing to be explored and resolved in the hydroxypropyl guar gum (HPG) removal process, e.g., high viscosity and removal of macromolecular organic compounds. Our works provided a facile and economical HPG removal technology for fracturing fluids by designing a series of processes including gel-breaking, coagulation and precipitation according to the diffusion double layer theory. After this treatment process, the fracturing fluid can meet the requirements of reinjection, and the whole process was environment friendly without secondary pollution characteristics. In this work, the fracturing fluid were characterized by scanning electron microscopy (SEM), Energy dispersive X-ray (EDX), X-ray diffraction (XRD) and Fourier transformed infrared (FTIR) spectroscopy technologies, etc. Further, the micro-stabilization and destabilization mechanisms of HPG in fracturing fluid were carefully investigated. This study maybe opens up new perspective for HPG removal technologies, exhibiting a low cost and strong applicability in both fundamental research and practical applications.
ISSN:1932-6203
1932-6203
DOI:10.1371/journal.pone.0247948