STUDY OF POSSIBLE USING THE POLYMER SOLUTIONS AS AGENTS OF OIL DISPLACEMENT IN THE FIELDS WITH ABNORMALLY LOW RESERVOIR TEMPERATURES

• Main Authors: A. F. Fyodorova, E. Yu. Shitz, A. S. Portnyagin
• Other Authors: The Pennsylvania State University CiteSeerX Archives
• Format: Text
• Language: English
• Subjects: Paa; Yakutia
• Online Access: http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.542.930; http://www.ogbus.ru/eng/authors/Fyodorova/Fyodorova_2e.pdf

Rheological, structural and oil displacing properties of the solutions of polyacrylamide (PAA) and carboxymethylcellulose (CMC) are fully investigated in the conditions of abnormally low reservoir temperatures. Physico-chemical processes occurring at a contact of highly mineralized formation water with the polymer solutions of PAA and CMC, which are different in composition, in the pore space of the reservoir are studied. The possibility of increasing the efficiency of hydrodynamic influence on the reservoir in the conditions of the fields of the southwest Yakutia due to the use of displacing compounds on the water-soluble polymer base is established experimentally. At present more then 60 % of the recoverable oil reserves belong to the category of reserves, which are difficult for extraction. Oil reserves in such fields, with the acceptable technical and economic factors, can be developed only under the condition of using the physico-chemical methods of the influence on the oil reservoir [1]. Thereupon, the choice of the most efficient technological scheme of such influence, directed at the maximum reduction of the residual oil reserves, is of a particular urgency. In the world and domestic practice the pumping of margins of different