块状底水稠油藏水平井部署界限模拟研究

Allocation threshold study for the horizontal well in block heavy oil reservoir
with edge and bottomwater

杨光璐

Yang Guanglu

辽河油田分公司勘探开发研究院，辽宁 盘锦 124010

Exploration & Development Research Institute, Liaohe Oilfield Company, CNPC, Panjin 124010, China

近年来，水平井技术在辽河油田的应用得到了较快发展，取得了较好的开发效果。对于不同类型的油藏，水平井的部署应具有不同的适用界限。利用数值模拟方法，对块状边底水特超稠油油藏吞吐水平井的部署界限进行了深入研究。研究结果表明：油藏底水能量大小、油水过渡带稠油氧化层是影响避水厚度的主要因素，同时给出了适合冷41块油藏特点的水平井部署设计方法。该项研究成果对其他类似油藏水平井部署具有较强的借鉴意义。

The horizontal well technology has developed rapidly in Liaohe Oilfield in recent years and good result has been achieved. Different kinds of reservoirs have different allocation threshold for horizontal wells. Using the numerical simulation method, in this paper, the allocation threshold of the horizontal well has been studied in block extra and super heavy oil reservoir with bottom water. The results show that bottom water energy and oxidized zone of heavy oil in oil-water transitional zone are the main factors which affect the water avoidance thickness. At the same time the design method for Block L41 has been provided in this paper. The study
will provide a valuable guideline for the similar reservoirs to allocate the horizontal wells.