Preparation and properties of an acid-resistant preformed particle gel for conformance control
Zhou B. Kang W. Yang H. Zhu T. Zhang H. Li X. Sarsenbekuly B. Sarsenbek T.
February 2021Elsevier B.V.
Journal of Petroleum Science and Engineering
2021#197
In order to solve the problem of poor acid-resistant of preformed particle gel (PPG) as conformance control material in reservoirs with supercritical CO2 flooding, acrylamide (AM), N,N′-methylene bisacrylamide (MBA) and dimethyldiallylammonium chloride (DMDAAC) were used to prepare an acid-resistant preformed particle gel (AR-PPG) by radical polymerization method. Fourier transform infrared spectroscopy (FTIR) and scanning electron microscopy (SEM) were used to analyze the structural property of AR-PPG. The swelling capability, viscoelasticity and shear resistance of AR-PPG in acid environment have been studied. The conformance control system with good dispersion stability was selected and its plugging behavior was studied. The results showed that the swelling ratio of AR-PPG in acid environment was 1.41. Compared with conventional PPG, AR-PPG displayed better swelling capability, shearing resistance and viscoelastic properties in acidic environment. In addition, the conformance control system with good dispersion was 1000 mg/L AR-PPG dispersed in 1000 mg/L cationic polyacrylamide (CPAM) solution. The plugging rate of this conformance control system could be 70.8% in the low permeability micro-fracture core after supercritical CO2 flooding. This work can provide an alternative material for plugging and conformance control in oilfields of supercritical CO2 flooding.
Acid-resistant , CO2 flooding reservoir , Conformance control , Preformed particle gel
Text of the article Перейти на текст статьи
Key Laboratory of Unconventional Oil & Gas Development (China University of Petroleum (East China)), Ministry of Education, Qingdao, 266580, China
School of Petroleum Engineering, China University of Petroleum (East China), Qingdao, 266580, China
Kazakh-British Technical University, Almaty, 050000, Kazakhstan
Khoja Akhmet Yassawi International Kazakh-Turkish University, Turkestan, 161200, Kazakhstan
Key Laboratory of Unconventional Oil & Gas Development (China University of Petroleum (East China))
School of Petroleum Engineering
Kazakh-British Technical University
Khoja Akhmet Yassawi International Kazakh-Turkish University
10 лет помогаем публиковать статьи Международный издатель
Книга Публикация научной статьи Волощук 2026 Book Publication of a scientific article 2026