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Energies 2016, 9(10), 783; doi:10.3390/en9100783

Experimental Study of the Feasibility of Air Flooding in an Ultra-Low Permeability Reservoir

1
College of Petroleum Engineering, Northeast Petroleum University, Daqing 163318, China
2
Hainan Fushan Petroleum Exploration and Development Company Limited, Haikou 570100, China
*
Author to whom correspondence should be addressed.
Academic Editor: Alireza Bahadori
Received: 7 August 2016 / Revised: 12 September 2016 / Accepted: 20 September 2016 / Published: 28 September 2016
(This article belongs to the Special Issue Oil and Gas Engineering)
View Full-Text   |   Download PDF [5973 KB, uploaded 28 September 2016]   |  

Abstract

The development effect of water flooding in an ultra-low permeability reservoir is poor due to its poor physical properties and high shale content, so an experimental study of air flooding which helps to complement energy production was carried out. Based on the Accelerating Rate Calorimeter experimental results, the crude oil of N block in L oilfield can undergo low-temperature oxidation reactions, which are the basic condition for air flooding. Three groups of experimental natural cylinder cores designed for oil displacement, water flooding and air flooding were used respectively, and the relationship between differential pressure, oil recovery, injection capacity with injection volume was investigated. It is observed that the recovery efficiency increased 2.58%, the injection-production pressure difference dropped 60% and the injection capability increased 60% in the experiment of shifting air flooding after water flooding to 75% moisture content, compared with water flooding alone. It has been shown in the results that the recovery efficiency improved sharply more than water flooding, the effect of depressurization and augmented injection was obvious, and the air displacement was thus validated. We suggest that other science and technology workers should perform further tests and verify this result through numerical simulation. View Full-Text
Keywords: air flooding; ARC; extra-low permeable reservoir; feasibility air flooding; ARC; extra-low permeable reservoir; feasibility
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MDPI and ACS Style

Qu, G.; Meng, Y.; Shen, A.; Guo, Y.; Liu, Y.; Tao, Y. Experimental Study of the Feasibility of Air Flooding in an Ultra-Low Permeability Reservoir. Energies 2016, 9, 783.

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