A Study of the Thin Film-Coated Swelling Retarding Particles in Fractured Carbonate Reservoirs for Water Plugging and Profile Control

T oilfield is the fractured-vuggy carbonate reservoir at a temperature of around 130 °C, with salinity of up to 22 × 104 mg/L. In order to solve the problem of the high water cut in the late development stage of T oilfield, we selected XN-T from 27 kinds of swelling retarding particles by testing th...

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Bibliographic Details
Published in:Energies (Basel) 2022-02, Vol.15 (3), p.1085
Main Authors: Li, Guojun, Fu, Meilong, Li, Xuejiao, Hu, Jiani
Format: Article
Language:English
Subjects:
Aging
carbonate oil reservoir
Coated particles
Coatings
Composite materials
Core flow
Fractured reservoirs
Infrared analysis
Infrared spectroscopy
injection parameter
Laboratories
Natural gas reserves
Oil and gas fields
Oil field equipment
Oil fields
Oil recovery
Oil reserves
Particle size
Permeability
Petroleum production
physical film coating
Polymers
profile control
Reservoirs
Retarding
Salinity
Spectrometry
Swelling
swelling retarding particles
Thin films
Water absorption
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Summary:T oilfield is the fractured-vuggy carbonate reservoir at a temperature of around 130 °C, with salinity of up to 22 × 104 mg/L. In order to solve the problem of the high water cut in the late development stage of T oilfield, we selected XN-T from 27 kinds of swelling retarding particles by testing their swelling capacity, and coated a thin film to improve its retarding swelling capacity. The mechanisms of strong water absorption and water-holding abilities of particles were analyzed by infrared spectrometry and SEM. In the core flow experiment, the plugging rate was found to be 98.42%. Finally, the injection parameters of the coated particles were optimized to maximize the water plugging and profile control ability, resulting in an optimal particle size of 0.4–0.6 mm and a mass fraction of 10%.
ISSN:1996-1073
1996-1073
DOI:10.3390/en15031085