doi:

DOI: 10.3724/SP.J.1249.2018.04368

Journal of Shenzhen University Science and Engineering (深圳大学学报理工版) 2018/35:4 PP.368-376

Inter-well oil recovery in horizontal-vertical composed well pattern


Abstract:
It is critical for developing oilfield and deploying composed well patterns efficiently to describe the function of horizontal well in composed well network and inter-well oil recovery efficiency quantitatively. Based on the composed well pattern in a practical oilfield,a novel fluid seepage model is developed. Using the conformal transformation, the flowing potential function and the flowing stream function in the well pattern are obtained. A novel concept of dimensionless recoverable area is proposed to quantify the oil recovery between producing and injection wells. The calculation results indicate that after deploying horizontal wells,the pressure drop between producing and injection wells is mitigated,which results in the enlargement of high-speed flowing region and the reduction of low-speed flowing region. This trend performs much more significant as the ratio of production rates between the opposite wells reduces. It can be drawn that inter-well production performance can be quantified by using the proposed novel method for the better deployment of composed well pattern.

Key words:oil and gas field development,horizontal well,composed well patterns,seepage field,conformal transformation,recoverable area,plane displacement rule

ReleaseDate:2018-07-26 10:51:02



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