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A New Method for Calculating the Characteristic Shape of the Water Ridge Under Horizontal Production Wells in Marine Sandstone Heavy Oil Reservoirs with Bottom Water
Chemistry and Technology of Fuels and Oils ( IF 0.6 ) Pub Date : 2021-09-21 , DOI: 10.1007/s10553-021-01294-z
Li Ke 1, 2 , Zhang Jinqing 1, 2 , Zhu Guojin 1, 2 , Zhou Wensheng 1, 2 , Wang Kai 1, 2 , Liang Haipeng 3
Affiliation  

The static and dynamic characteristics of a marine sandstone bottom-water heavy oil reservoir include low structural amplitude, small thickness, strong bottom water energy, high watercut rise speed, significant differences in the watercut change law of wells, etc. Due to the complexities of accurate description of the sweep range and ridge shape of high watercut production wells, the evaluation and prediction of the remaining oil distribution is problematic, as well as the feasibility of the adjustment wells. In this paper, we have studied the dynamic characteristics of the water ridge of horizontal production wells in marine sandstone bottom-water heavy oil reservoirs. First, based on the physical simulation experiments, we discuss the overall morphological characteristics of the water ridge after the bottom water rise and the changes caused by the influence of an interlayer, considering the effect of the horizontal production wells and natural water driving. Second, a new method is proposed for calculating the characteristic shape of the water ridge in the heavy oil reservoir in the presence of the bottom water. The new method can be used for quick and accurate calculations of a 3D water ridge shape under horizontal production wells in reservoirs, with or without interlayers. It can also facilitate the quantitative evaluation of the water ridge sweep range of production wells in the high watercut periods. The new method can be applied to predict the remaining oil distribution range and reserves and provide important technical background for development adjustment measures and potential tapping for this type of heavy oil reservoir.



中文翻译:

底水海相砂岩稠油油藏水平采油井下水脊特征形状计算新方法

海相砂岩底水稠油油藏具有构造振幅低、厚度小、底水能量强、含水上升速度快、油井含水变化规律差异显着等特点。高含水生产井波及范围和脊形的准确描述,剩余油分布的评估和预测存在问题,以及调整井的可行性。本文研究了海相砂岩底水稠油油藏水平生产井水脊的动态特征。首先,基于物理模拟实验,考虑水平生产井和天然水驱的影响,讨论了底水上升后水脊的整体形态特征以及夹层影响引起的变化。其次,提出了一种计算底水存在下稠油油藏水脊特征形状的新方法。新方法可用于快速准确计算油藏水平生产井下的 3D 水脊形状,无论是否有夹层。也有助于高含水期生产井水脊波及范围的定量评价。

更新日期:2021-09-22
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