特高含水砂岩油田水平井参数优化设计——以哈萨克斯坦K油田为例

Optimization of Design Research for Horizontal Well Parameter in Extra-high Water Sandy Oilfield—Kazakhstan K Oilfield

为了充分挖潜井间剩余油,提高储量动用程度,2012年开始在哈萨克斯坦K油田规模实施水平井。为了研究和评价应用水平井挖潜高含水油田剩余油潜力,应用地质、测井、油藏工程等多学科理论,优选层位,论证合理的水平段长度,分析水平井垂向位置以及合理产液量。在K油田剩余油丰度较高地区部署实施水平井38口。平均单井初期日产油17.9t,是同期直井的2倍以上,含水68.7%,低于全区平均含水20%,证实应用水平井技术开发高含水砂岩油田是可行的。

In order to dig the potential interwell remaining oil and improve the degree of producing reserves, horizontal wells in scale were applied in the K oilfield of kazakhstan from 2012. For studying and evaluating the remaining oil potential with applying horizontal well to dig high water oilfield, we used geology, well logging, reservoir engineering and many multidisciplinary theory to optimize horizon demonstrate reasonable horizontal length, analyze vertical location of horizontal well and rational liquid producing capacity. We implemented 38 horizontal wells in K oilfield which have high abundance remaining oil. The average daily oil production of single well reached 17.9 t and that was twice over the production of vertical wells, and water content was 68.7% and 20% lower than the whole area. It has proved that using the horizontal wells to develop high water content sandstone field is feasible.