河南油田化学驱面临挑战及对策

doi:10.13809/j.cnki.cn32-1825/te.2020.06.001

摘要/Abstract

摘要：

河南油田化学驱已形成油藏工程、驱油剂配方研发、地面工程设计等方面技术,在26个单元开展了化学驱工业化应用,油藏化学驱类型包括Ⅰ、Ⅱ类并探索了Ⅲ类油藏,技术方法涵盖了聚合物驱、复合驱、非均相驱等,化学驱已成为油田稳产或延缓产量递减的主体技术。随着优质资源的全面动用,目前面临着优质化学驱资源匮乏、化学驱项目效益下降、化学驱技术发展与创新的挑战。应对挑战的对策是做实基础工作,调整技术路线,强化技术攻关研究,深化注采工艺支撑和研发配套撬装化地面注聚系统,优选性价比高驱油剂,降低生产运行成本和地面投资,提升化学驱效果和效益,提高化学驱储量动用率,实现化学驱储量有序接替。

关键词: 化学驱, 现状, 面临挑战, 对策, 撬装化注聚系统, 化学驱效益, 储量动用率

Abstract:

The supporting technologies of chemical flooding such as reservoir engineering, flooding agent and surface engineering have been formed in Henan Oilfield. The industrial application has been carried out in 26 units and which include Class I and II reservoirs and develop towards Class Ⅲ reservoirs by chemical flooding. It experiences the application of polymer flooding, compound flooding and heterogeneous flooding, which becomes the main technologies for stabilizing production or delaying production decline. With the comprehensive utilization of high-quality resources, it is faced with the challenges of lack of high-quality chemical flooding resources, the decline of chemical flooding project benefits, and the development and innovation of chemical flooding technology. Therefore, the countermeasures are to ensure the foundation, adjust the technology route, strengthen the technical research, deepen the injection-production process support, research and develop the matching skid-mounted surface polymer injection system, optimize the oil displacement agent with high cost performance, reduce the investment, promote the efficiency of chemical flooding, and improve the utilization rate of chemical flooding reserves, so as to achieve the orderly connection of chemical flooding reserves

Key words: chemical flooding, status, face challenges, countermeasure, skid-mounted polymer injection system, chemical flooding benefits, reserve utilization rate

中图分类号:

TE357

张初阳,李长宏,卢军,李红. 河南油田化学驱面临挑战及对策[J]. 油气藏评价与开发, 2020, 10(6): 1-7.

ZHANG Chuyang,LI Changhong,LU Jun,LI Hong. Challenges and countermeasures of chemical flooding in Henan Oilfield[J]. Reservoir Evaluation and Development, 2020, 10(6): 1-7.

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分类	油藏温度/℃	地层原油黏度/ （mPa·s）	渗透率/ 10^-3um²	矿化度/ (mg·L^-1)	总储量		已动用		未动用
分类	油藏温度/℃	地层原油黏度/ （mPa·s）	渗透率/ 10^-3um²	矿化度/ (mg·L^-1)	储量/10⁴t	占比/%	储量/10⁴t	占比/%	储量/10⁴t	占比/%
Ⅰ	<70	≤1 000	>200	<10 000	7 275	41.5	5 328	61.6	2 131	24.0
Ⅱ	70~80	≤1 000	>200	<30 000	4 563	26.0	2 998	34.6	1 381	15.6
Ⅲ	80~95	≤1 000	>200	<100 000	3 876	22.1	327	3.8	3 549	40.0
Ⅴ	>95	≤1 000	>200		1 806	10.3			1 806	20.4
合计					17 519		8 653		8 866

区块	分项	总井数/ 口	产能工作量		井下工作量
区块	分项	总井数/ 口	新井/口	更新井/口	返层井/口	完善补孔井/口	套变修井/口	增注井/口
双河Ⅳ4层三元复合驱	注入井	13	1		7	1	5	8
双河Ⅳ4层三元复合驱	采油井	18	1	1	10	4	5
双河Ⅳ1-3层聚合物驱后非均相驱	注入井	26	3			2	16	12
双河Ⅳ1-3层聚合物驱后非均相驱	采油井	34	5		7	3
双河Ⅴ下层系三元复合驱	注入井	24	2		15	9	11	1
双河Ⅴ下层系三元复合驱	采油井	35	1		17	14	5