关键词: 鱼骨型, 多分支井, 向井流动态关系, 产能, 数学模型

Abstract: It is imperative to develop inflow performance relationships of each type of multilateral wells because the number of multilateral well is rapidly increasing.In this paper the 3-D of pressure distribution in formation during the production of a herringbone multilateral well is derived based on that the 3-D steady flow in reservoir and the features of the flow in multilateral wellbores are fully considered.Thus a model of IPR for herringbone multilateral wells with considering pressure drops in the multilateral wellbores is developed.It provides a method and tool for calculating productivity and screening applications.It has been used to analyze the effect of some relevant parameters on productivity of a herringbone multilateral well.The studies showed that(1) for a homogeneous reservoir the productivity will decrease with the increase in multiple branches when the overall lengths of all branches is specified;and that(2) it is more effective for a heringbone multilateral well to drain the thin reservotrs.

Key words: Herringbone, Multilateral well, Inflow performance relationship, Productivity, Mathematical model