Productivity prediction model and optimal configuration of herringbone multilateral well

Abstract

In order to accurately predict the productivity of herringbone multilateral well, a new productivity prediction model was founded. And based on this model, orthogonal test and multiple factor variance analysis were applied to study optimization design of herringbone multilateral well. According to the characteristics of herringbone multilateral well, by using pressure superposition and mirror image reflection theory, the coupled model of herringbone multilateral well was developed on the basis of a three-dimensional pseudo-pressure distribution model for horizontal wells. The model was formulated in consideration of friction loss, acceleration loss of the wellbore and mixed loss at the confluence of main wellbore and branched one. After mathematical simulation on productivity of the herringbone multilateral well with the coupled model, the effects of well configuration on productivity were analyzed. The results show that lateral number is the most important factor, length of main wellbore and length of branched wellbore are the secondary ones, angle between main and branched one has the least influence.

Keywords

herringbone multilateral well / wellbore pressure drop / productivity prediction / optimization design

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