Abstract
H Oilfield is a complex fault field. Due to poor physical properties, it is still difficult to effectively inject wells after fracturing. In addition, the repeated fracturing effect has deteriorated year by year. Most of the blocks are generally low in production, and the oil recovery speed is less than 0.31 %. Since 2014, large-scale fracturing field tests have been carried out in H Oilfield. By analyzing the influence of various factors on fracturing effect, the grey correlation method was used to analyze the influence of various factors on oil production after fracturing. The results showed that the main factors influencing the fracturing effect in the test area were formation coefficient, porosity, oil saturation, amount of sand carrying fluid, amount of fracturing fluid, and amount of sand added. The research results can be used for reference and guidance to improve the development level of low-permeability oil fields.
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