复合热采技术在稠油油藏开发中的应用

Application of composite thermal recovery technology in heavy oil reservoir

金家油田地处于东营凹陷西南边缘斜坡带,油藏原油粘度高、敏感性强,常规蒸汽吞吐热采开发难以动用。针对强敏感性稠油的开发难点,提出了蒸汽、气体、降粘剂、粘土稳定剂复合热采工艺技术,通过研究各要素的作用机理,借助于多种因素的协同作用,形成了适合于此类油藏的复合采油技术,并采用数值模拟技术进行了复合热采工艺参数的优化。现场应用结果表明,复合热采工艺在金家油田获得了较好的开发效果,有效解决了该地区油藏开采难度大的问题。

Jinjia Oilfield is located in the southwest slope of Dongying Sag,where the reservoir has features of high vis-cosity of crude oil,strong sensitivity,and hard to recovery by the conventional steam stimulation recovery. Aiming at the de-velopment problems in the strong sensitivity heavy oil reservoir,a composite thermal recovery technology including steam, gas,viscosity reducer and anti - swelling agent has been put forward. Based on all key factors’mechanisms,the compound oil recovery technology was formed by means of synergistic effect of multiple factors. Using numerical simulation technolo-gy,the parameters of the technology were optimized. The field results showed that the technology has obtained good effect in Jinjia Oilfield and effectively solved the production problem in the region.