Synthesis and Properties of Modified Polymer Fracturing Fluid

doi:10.11944/j.issn.1000-0518.2018.11.170410

Chinese Journal of Applied Chemistry ›› 2018, Vol. 35 ›› Issue (11): 1295-1300.DOI: 10.11944/j.issn.1000-0518.2018.11.170410

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Synthesis and Properties of Modified Polymer Fracturing Fluid

LU Dali^a^*(),CHEN Yong^a,ZHANG Jun^b,YANG Xue^b

^aLaboratory of Oil and Gas Field Development,College of Engineering and Technology,Jingzhou,Hubei 434020,China
^bNational Engineering Laboratory for Oil and Gas Drilling Technology,Yangtze University,Wuhan 430100,China

Received:2017-11-15 Accepted:2018-03-22 Published:2018-10-31 Online:2018-10-31
Contact: LU Dali
Supported by:
Supported by the 2016 Scientific Research Project Guidance Project of the Hubei Provincial Education Department(No.B2016443)

Abstract

Abstract:

In order to improve the temperate and salt tolerance performance of water base fracturing fluid used in fracturing and reconstruction of oil field, acrylic acid(AA), acrylamide(AM), 2-acrylamide-2-methyl propane sulfonic acid(AMPS) and cationic hydrophobic long chain monomer(DS) were used as raw materials to prepare a modified hydrophobic polymer thickener(AAAD). A new fracturing fluid system was prepared using AAAD as the thickening agent, the complex of organic borates and sodium gluconate(GS-2) as the crosslinking agent. The system rheology and viscoelasticity, temperature resistance, salt resistance and gel breaking performance were evaluated. The results show that the fracturing fluid has good rheological properties at 150 ℃ with the shear rate of 170 s^-1. The gel can be broken within 4 h at 90 ℃ and the viscosity of the gel breaking liquid is 1.6 mPa·s when mass fraction of ammonium persulfate is 0.01%.

Key words: hydrophobic modified polymers, fracturing fluid, temperature resistance, rheological characteristic

LU Dali,CHEN Yong,ZHANG Jun,YANG Xue. Synthesis and Properties of Modified Polymer Fracturing Fluid[J]. Chinese Journal of Applied Chemistry, 2018, 35(11): 1295-1300.

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Synthesis and Properties of Modified Polymer Fracturing Fluid

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