Synergistic Modes and Enhanced Oil Recovery Mechanism of CO2 Synergistic Huff and Puff
نویسندگان
چکیده
With the gradual declining of oil increment performance CO2 huff-and-puff wells, overall exchange rate shows a downward tendency. In this regard, synergistic technologies have been proposed to maintain excellent effect and extend technical life such wells. However, there is no specific research on mechanism mode huff puff in horizontal This study aims establish determine adaptability acting puff. Three modes are based peculiarity fault-block reservoir’s small oil-bearing area broken geological structure. We three typical models analyze influence different development factors with numerical simulation. Each factor’s sensitivity clarified, enhanced recovery (EOR) proposed. The evaluation results show that reservoir rhythm, inter-well passage, well spacing, high-position liquid production rate, middle-well extremely sensitive factors; stratum dip injection volume allocation scheme relationship structural isobaths insensitive. EOR includes gravity differentiation, supplementary formation energy, forming foam flooding, coupling reservoirs. implementation conditions two-well cooperative stimulation simplest. model suitable for thick layers positive rhythm large dip. single-well requires channeling between multi-well rows can control intermediate well’s fluid rate. Field application at C2X1 block good total 1280 t an average water-cut reduction 57.7%.
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ژورنال
عنوان ژورنال: Energies
سال: 2021
ISSN: ['1996-1073']
DOI: https://doi.org/10.3390/en14123454