具有变井储的双孔介质典型曲线的识别──以克拉玛依夏子街油田为例

夏子街油田属低渗透带气顶的断块饱和油藏，由于构造及油气水关系复杂，给生产井压力恢复曲线解释带来了很大的困难，以致不能准确地掌握地下油气水运动规律及油气藏的动态变化。为此，以常规试井分析方法为基础，依据双孔介质油气藏渗流理论，提出了具有复杂内外边界条件的双孔介质油气藏典型试井曲线的识别方法。对早期压力曲线出现的“驼峰”及不呈45°直线的问题，进行了分析验证，解决了此类油田长期存在的试井分析难题，为认识改造油气藏提供了可靠的依据。

RECOGNITION OF DUAL-POROSITY TYPICAL CURVE WITH VARIABLE WELLBORE STORAGE-AN Example from Xiazijie Oilfield.

The reservoir in Xiazijie oilfield is fault-block low permeability saturated reservoir with gas cap. The complex structare and oil-gas-water relationship make it diffcult to interpret the pressure buildup curve of oil well so that oil-gas-water flow pattens and reservoir performance can't be correctly understood. Based on pereolation theory of dual-porosity reservoir, this paper presented the recognition method of typical well testing curve of dual-porosity reservoir with complex boundary conditions. The "hump" and straight line with a slope less or more than 1 on early Pressure curve are analysed and vended. The problem of well testing analysis in this type of oilfield is thus solved.