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

Abstract

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

CLC Number:

TE357

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.

Figures/Tables 8

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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

Challenges and countermeasures of chemical flooding in Henan Oilfield

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