ARTICLE
Experimental study on the flowback of a carboxymethyl hydroxypropyl guar gum fracturing fluid with good temperature resistance
1
Shal Gas Evaluation and Exploitation Key Laboratory of Sichuan Province, Chengdu, China
2
Shandong Institute of Petroleum and Chemical Technology, Dongying, China
Submission date: 2022-08-10
Final revision date: 2022-09-20
Acceptance date: 2022-10-23
Online publication date: 2022-11-25
Publication date: 2022-11-25
Journal of Theoretical and Applied Mechanics 2022;60(4):733-744
KEYWORDS
TOPICS
ABSTRACT
For unconventional oil and gas reservoirs such as shale oil and gas as well as tight oil and
gas, hydraulic fracturing generally enhances oil recovery. However, the flowback rate of the
residual fracturing fluid is low. The residual fracturing fluid in the fracture or the rock ma-
trix can reduce relative permeability of oil and gas, and the production rate will decrease.
Therefore, it is necessary to study the factors that affect the flowback rate of the fracturing
fluid. Most previous studies used the slot model, and viscous and capillary forces explain
stable discharge in porous media. The conclusions were only a primarily qualitative analysis.
The factors from experimental studies were not comprehensive, and they did not consider
the influence of gravity. There are few studies on unstable drainage in porous media un-
der different displacement directions. This paper presents a carboxymethyl hydroxypropyl
guar gum fracturing fluid with good temperature resistance, and a fracturing fluid flowback
experiment is carried on. The effects of the displacement direction, injection pressure, inter-
facial tension, fracturing fluid viscosity, and proppant wettability on the flowback rate are
analyzed. The research results can provide formulation of the on-site construction scheme.
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| eISSN: | 2543-6309 |
| ISSN: | 1429-2955 |
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