运用保角变换和等值渗流阻力推得分支水平井（有公共点或没有公共点）产能公式。
The productivity formulas of branch horizontal wells which have or not have common joint are derived by applying conformal transformation and isopleth map of percolation resistance force.
在水平井设计中，通常是先设计出水平段，然后再设计着陆点以上的井段。
In horizontal well planing, the horizontal interval is usually initially planed, and then followed the interval above the landing point.
针对水平井井眼具有一定曲率的特点，建立了抽油杆柱下部任意一点最小轴向力的计算方法。
In the light of characteristics that horizontal hole possesses a certain rate of curvature, the method of estimating minimum axial force at any point along a rod string is established.
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