Exploration and Application of Geological Engineering Integrated Foam Drainage Technology in Tight Sandstone Gas Reservoirs
CCDC Geological Exploration Development Research Institute, Chendu 610051, China
| Abstract: | Tight sandstone gas reservoir has poor physical properties and great changes in gas and water distribution, foam drainage gas production technology is the key to realize economic development. Based on the geological characteristics of tight sandstone gas reservoir, comprehensively considering geological factors such as source rock and reservoir control, sand body structure, porosity, permeability, and combined with remaining recoverable reserves, dynamic and static evaluations, fluid accumulation characteristics, a refined well selection method has been formed and foam drainage technology has been established based on the concept of integrated geological-engineering. The on-site test results of the geological engineering integrated foam drainage technology show that the cumulative gas production increasen from 25 wells exceeds 100×104m3, with an effective rate of 96%. Geological engineering multi factor analysis shows that tight sandstone gas reservoirs with open-flow rate greater than 10×104m3/d, porosity between 6-10%, permeability between 0.5-1mD, and gas saturation between 50-60% have good production increase effects. The foam drainage technology based on the concept of geological engineering integration provides technical reserves for the scientific and effective exploration and development of tight sandstone gas reservoir, and helps to achieve the beneficial development of the reservoir. |
| Keywords: | Tight Sandstone Gas Reservoir; Foam Drainage; Geological Engineering Integrated; Sulige Gas Field |
| DOI: | 10.57237/j.se.2024.01.003 |
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Received: 24 December 2023
Accepted: 1 February 2024
Published Online: 4 February 2024
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