کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1756183 | 1522881 | 2009 | 11 صفحه PDF | دانلود رایگان |
![عکس صفحه اول مقاله: A simplified analytical method for estimating the productivity of a horizontal well producing at constant rate or constant pressure A simplified analytical method for estimating the productivity of a horizontal well producing at constant rate or constant pressure](/preview/png/1756183.png)
In this work, we present an analytical method for estimating the productivity of an infinite-conductivity horizontal well in a closed, box-shaped reservoir producing at either a constant rate or a constant pressure. It is based on approximate analytical solutions for the 2D inflow performance of an infinite-conductivity fracture in a rectangular drainage area and the near-well pressure drop for flow to a circular well in a vertical cross-section of the reservoir. The method can accommodate reservoirs with arbitrary horizontal and vertical aspect ratios, off-center wells, permeability anisotropy and skin factors. Being simple and straightforward, the method can be readily implemented in a standard spreadsheet program. Well productivities for depletion at constant rate are always higher than at constant pressure. The difference can be as much as 22% for a fully penetrating well in a thin, isotropic reservoir.
Journal: Journal of Petroleum Science and Engineering - Volume 64, Issues 1–4, February 2009, Pages 77–87