稠油老区直井火驱驱替特征与井网模式选择

doi:10.7623/syxb201708008

石油学报 ›› 2017, Vol. 38 ›› Issue (8): 935-946,972.DOI: 10.7623/syxb201708008

稠油老区直井火驱驱替特征与井网模式选择

关文龙¹, 张霞林¹, 席长丰¹, 王晓春¹, 杨凤祥², 施小荣², 李秋¹

1. 中国石油勘探开发研究院提高石油采收率国家重点实验室北京 100083;
2. 中国石油新疆油田公司勘探开发研究院新疆克拉玛依 834000

收稿日期:2017-03-15 修回日期:2017-05-15 出版日期:2017-08-25 发布日期:2017-09-02
通讯作者: 关文龙,男,1970年2月生,1991年获华中理工大学学士学位,2003年获石油大学(北京)博士学位,现为中国石油勘探开发研究院教授级高级工程师,主要从事稠油热采开发研究工作。Email:guanwl@petrochina.com.cn
作者简介:关文龙,男,1970年2月生,1991年获华中理工大学学士学位,2003年获石油大学(北京)博士学位,现为中国石油勘探开发研究院教授级高级工程师,主要从事稠油热采开发研究工作。Email:guanwl@petrochina.com.cn
基金资助:
国家重大科技专项"火烧驱油技术研究与应用"（2016ZX05012-002）资助。

Displacement characteristics and well pattern selection of vertical-well fire flooding in heavy oil reservoirs

Guan Wenlong¹, Zhang Xialin¹, Xi Changfeng¹, Wang Xiaochun¹, Yang Fengxiang², Shi Xiaorong², Li Qiu¹

1. PetroChina Research Institute of Petroleum Exploration and Development;State Key Laboratory of Enhanced Oil Recovery, Beijing 100083, China;
2. Exploration and Development Research Institute, PetroChina Xinjiang Oilfield Company, Xinjiang Karamay 834000, China

Received:2017-03-15 Revised:2017-05-15 Online:2017-08-25 Published:2017-09-02

摘要/Abstract

摘要：

伴随着直井火驱技术在新疆、辽河等注蒸汽稠油老区的成功试验和工业化应用，其提高采收率的潜力正得到广泛认同。通过室内实验、矿场试验和油藏工程等多种方法，系统研究了稠油老区直井火驱的驱替特征。室内实验和矿场取心资料证明，直井火驱具有较高的驱油效率，燃烧前缘波及范围内基本没有剩余油，可实现较高的平面波及系数和最终采收率，是一种后续无需再转换开发方式即可实现大幅度提高采收率的战略性接替技术。基于以上研究，全面论证了面积火驱和线性火驱两种井网模式的开发特点及各自优势，并将研究成果应用于新疆红浅火驱工业化试验方案设计中。研究表明，线性井网具有地面设施建设及管理容易、阶段管理井数少、配套工艺相对简单、燃烧前缘的目的性调控容易实现等优点，面积井网则在降低火驱阶段空气油比、提高油藏总的采油速度、减少地质及油藏管理风险等方面具有优势。火驱井网的选择应重点考虑地质、储层及流体物性、油价、油藏已开发程度等因素。红浅火驱工业化试验方案采用了新、老井组合下改进的线性井网模式，既吸取了线性井网先导试验的经验教训，也借鉴了面积井网的相关优点。

关键词: 稠油油藏, 火驱, 提高采收率, 井网, 矿场试验

Abstract:

With the successful pilot tests and follow-up industrial applications of vertical-well fire flooding technology in steam-injection heavy oil reservoirs in Xinjiang and Liaohe oilfield, the enhanced oil recovery potential of fire flooding has been gradually acknowledged. Displacement characteristics of vertical-well fire flooding in steam-injection heavy oil reservoirs have been systematically investigated using multiple approaches such as in-door experiment, mineral field test and reservoir engineering. Laboratory experiments and field coring data have revealed that the vertical-well fire flooding has significantly high flooding efficiency and roughly little residual oil in the combustion front wave and swept zone, and can achieve the high plane sweep coefficient and ultimate recovery. Vertical-well fire flooding is a strategic replacement technology without using subsequent retransform and development method to improve the recovery greatly. Based on the above research, the development characteristics and advantages of two well patterns, i.e., areal and linear fire flooding were comprehensively demonstrated, and the research achievement were applied in the industrial pilot planning of fire flooding in Hongqian block, Xinjiang. The research indicates that linear well pattern has the advantages such as easy surface construction and management, less wells under staged management, simple associated processes and being prone to combustion front for targeted control; areal well pattern has the advantages in reducing the air/oil ratio during fire flooding stage, accelerating the total recovery of reservoir and decreasing geological and reservoir management risks. To select the well patterns of fire flooding should focus on geology, reservoir and fluid properties, oil price, the reservoir recovery degree and other factors. An improved linear well pattern with a combination of newly drilled wells and previous wells was proposed for fire flooding industrial pilot in Hongqian block, which had not only learnt the experiences gained in the pilot test of linear well pattern, but also referred to the advantages of areal well pattern.

Key words: heavy oil reservoir, fire flooding, enhanced oil recovery, well pattern, mineral field test

中图分类号:

TE357.4

关文龙, 张霞林, 席长丰, 王晓春, 杨凤祥, 施小荣, 李秋. 稠油老区直井火驱驱替特征与井网模式选择[J]. 石油学报, 2017, 38(8): 935-946,972.

Guan Wenlong, Zhang Xialin, Xi Changfeng, Wang Xiaochun, Yang Fengxiang, Shi Xiaorong, Li Qiu. Displacement characteristics and well pattern selection of vertical-well fire flooding in heavy oil reservoirs[J]. Acta Petrolei Sinica, 2017, 38(8): 935-946,972.

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稠油老区直井火驱驱替特征与井网模式选择

Displacement characteristics and well pattern selection of vertical-well fire flooding in heavy oil reservoirs

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