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Abstract
This paper presents an integrated study on the superheated steam injection in the North КенкиÑк Field, Kazakhstan. The methodologies cover investigation of mechanisms of superheated steam in recovery, lab experiment, and numerical simulation. The study indicates that the injection of superheated steam can cause rock wettability conversion which is favorable to recovery. The higher the heat enthalpy, the larger the specific volume and latent heat of vaporization of superheated steam would result in the better production and economic performance. The study result was further conformed in the pilot test. Field fulfillment is optimized and scheduled. Key words: Superheated steam, shallow heavy oil reservoir, heatloss, reservoir simulation.
Highlights
Steam injection is an increasingly common method of extracting heavy crude oil
Because of high steam quality and specific heat enthalpy of superheated steam, under the condition of same quantity of steam injection, the effect of oil viscosity reduction is more evident, the effective time of the latent heat is longer by superheated steam injection, which can be seen from the larger steam chamber volume (Zhang et al, 2010)
The North Кенкияк oil field is composed of Block I and II, and the target zone for superheated steam injection is юII. 132 and 169 wells are deployed in Blocks I and II
Summary
This paper presents an integrated study on the superheated steam injection in the North Кенкияк Field, Kazakhstan. The methodologies cover investigation of mechanisms of superheated steam in recovery, lab experiment, and numerical simulation. The study indicates that the injection of superheated steam can cause rock wettability conversion which is favorable to recovery. The higher the heat enthalpy, the larger the specific volume and latent heat of vaporization of superheated steam would result in the better production and economic performance. The study result was further conformed in the pilot test.
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