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research-article

Experimental Investigation on Damage Mechanism of Guar Gum Fracturing Fluid to Low-Permeability Reservoir Based on Nuclear Magnetic Resonance

[+] Author and Article Information
Tiankui Guo

College of Petroleum Engineering, China University of Petroleum, Huadong 266580, China
guotiankui@126.com

Facheng Gong

College of Petroleum Engineering, China University of Petroleum, Huadong 266580, China
1174652484@qq.com

Xin Lin

CNPC Changqing Oilfield, Xi'an 710065, China
18754257325@163.com

Qiang Lin

College of Petroleum Engineering, China University of Petroleum, Huadong 266580, China
1120051400@qq.com

Xiaozhi Wang

College of Petroleum Engineering, China University of Petroleum, Huadong 266580, China
994532059@qq.com

1Corresponding author.

ASME doi:10.1115/1.4039324 History: Received November 10, 2017; Revised January 06, 2018

Abstract

The damage mechanism of fracturing fluids has always been the hot research topic in the development of low-permeability reservoir with hydraulic fracturing. At present, the research in this area is conducted mostly by the conventional core fluid flow test designed with industrial standards, less in the experiment operated from a micro perspective. Against the reservoir cores with different permeability, and based on the results of SEM, mercury injection experiment, and core fluid flow test, this paper uses the technology of nuclear magnetic resonance (NMR) to systematically analyze the degree and rule of water sensitivity, water block and solid-phase adsorption damage resulted from hydroxypropyl guar gum (HPG) and carboxymethyl guar gum (CMG) fracturing fluids, and proposes a comprehensive test method for evaluating the fracturing fluids damage to the reservoir. With the technology of NMR, the objective and accurate evaluation of various damages to reservoir resulted from fracturing fluids is realized, and the corresponding relation between damage mechanism and damage extent is established, which provides reference for research on improvement of fracturing fluid properties and reservoir protection measures.

Copyright (c) 2018 by ASME
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