顺北油气田断溶体油藏油井产能评价新方法

doi:10.7657/XJPG20210206

摘要/Abstract

摘要：

顺北油气田新型断溶体油藏高产能试点区块在油井产能认识方面存在2个问题：由于油井系统试井后地层压力波动明显,传统系统试井解释方法在顺北油气田不再适用;基于系统试井资料确定的油井产能指示曲线呈现非线性特征,因此,采油指数法也不适用于顺北油气田油井产能定量评价。为实现顺北油气田油井产能定量评价,基于系统试井阶段弹性产率的系统试井资料修正方法,提出了包括油井指数式产能方程、综合采油指数和产能划分标准的顺北油气田油井产能评价方法。通过实例井验证系统试井资料修正方法和产能评价方法适用于顺北油气田油井产能定量评价,为顺北油气田油井产能定量认识提供了理论依据。

关键词: 顺北油气田, 断溶体油藏, 系统试井, 产能评价, 采油指数法, 指数式产能方程, 非线性惯性阻力, 综合采油指数

Abstract:

There are two problems in the understanding of oil well productivity in the high-productivity pilot block of fault-karst reservoirs in Shunbei oil & gas field: First, the formation pressure fluctuates obviously after well testing, so the conventional method for well test interpretation is no longer applicable; second, the productivity index curve determined based on well test data is nonlinear, so the oil production index method is unsuitable for quantitatively evaluating the oil well productivity. In order to realize quantitative evaluation of the productivity of the oil wells in Shunbei oil & gas field, based on the correction to well test data for estimating the fluctuating productivity in the systematic well test stage, we proposed a new method for evaluating the productivity of the oil wells, which includes exponential productivity equation, comprehensive oil production index, and productivity division standard. Field application has proved the systematic well test data correction method and the productivity evaluation method are suitable for quantitatively evaluating the productivity of the oil wells in Shunbei oil & gas field, which provide a theoretical basis for the quantitative understanding of the productivity of the oil wells in Shunbei oil & gas field.

Key words: Shunbei oil & gas field, fault-karst reservoir, systematic well testing, productivity evaluation, oil production index method, exponential productivity equation, nonlinear inertial resistance, comprehensive oil production index

中图分类号:

TE344

胡文革. 顺北油气田断溶体油藏油井产能评价新方法[J]. 新疆石油地质, 2021, 42(2): 168-172.

HU Wenge. A New Method for Evaluating the Productivity of Oil Wells in Fault-Karst Reservoirs in Shunbei Oil & Gas Field[J]. Xinjiang Petroleum Geology, 2021, 42(2): 168-172.

图/表 5

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