低渗透M油藏CO2非混相驱主控机理及应用

doi:10.13809/j.cnki.cn32-1825/te.2020.03.010

Abstract

Abstract:

CO₂ immiscible flooding is a very important technology for low permeability reservoirs with strong heterogeneity, high miscibility pressure of crude oil or severe reservoir voidage. Firstly, the expansion experiments and MMP test of CO₂ injection are carried out, and the IFT and mole content of oil and gas phase of each block are tested by numerical simulation. And then, the dominant mechanism of CO₂ injection to recover reservoir energy and improve oil displacement efficiency in low permeability reservoir are revealed. Therefore, taking M Block with low-permeability as the research object, and based on 3D fine geological modeling, the numerical simulation is applied to optimize reservoir pressure, gas injection volume, gas injection velocity, shut-in gas-oil ratio and other parameters, and the optimal technical policy is formulated. Preferable recovery performance is obtained through field application. The results show that for the CO₂ immiscible flooding technology in low permeability reservoirs, dissolving and expanding oil phase by gas injection are the dominant mechanism for both recovering reservoir energy and improving oil displacement efficiency, besides, the latter still need to reduce the IFT and evaporate and extract the light components. This study provides a reference for the formulation of CO₂ immiscible continuous flooding scheme in other reservoirs of the same type.

Key words: low permeability reservoir, reservoir energy recovery, dominant EOR mechanisms, parameter optimization, field application

CLC Number:

TE345

JIN Zhongkang,WANG Zhilin,MAO Chaoqi. Dominant mechanism and application of CO₂ immiscible flooding in M block with low permeability[J].Reservoir Evaluation and Development, 2020, 10(3): 68-74.

Figures/Tables 11

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References 21

[1]	李承龙. 特低渗透油藏二氧化碳驱气窜影响因素及规律[J]. 特种油气藏, 2018,25(3):82-86.
	LI C L. Gas channeling influencing factors and patterns of CO₂-flooding in ultra-low permeability oil reservoir[J]. Special Oil & Gas Reservoirs, 2018,25(3):82-86.
[2]	ROSTAMI B, POURAFSHARY P, FATHOLLAHI A, et al. A new approach to characterize the performance of heavy oil recovery due to various gas injections[J]. International Journal of Multiphase Flow, 2018,99:273-283. doi: 10.1016/j.ijmultiphaseflow.2017.10.014
[3]	王海涛, 伦增珉, 骆铭, 等. 高温高压条件下CO₂/原油和N₂/原油的界面张力[J]. 石油学报, 2011,32(1):177-180.
	WANG H T, LUN Z M, LUO M, et al. Interfacial tension of CO₂/crude oil and N₂/crude oil at high pressure and high temperature[J]. Acta Petrolei Sinica, 2011,32(1):177-180.
[4]	邓瑞健, 田巍, 李中超, 等. 二氧化碳驱动用储层微观界限研究[J]. 特种油气藏, 2019,26(3):133-137.
	DENG R J, TIAN W, LI Z C, et al. Microscopic limits of reservoir producing for carbon dioxide flooding[J]. Special Oil & Gas Reservoirs, 2019,26(3):133-137.
[5]	牛保伦. 边底水气藏注二氧化碳泡沫控水技术研究[J]. 特种油气藏, 2018,25(3):126-129.
	NIU B L. Water control in the CO₂ foal-flooding gas reservoir with bottom-edge aquifer[J]. Special Oil & Gas Reservoirs, 2018,25(3):126-129.
[6]	李宾飞, 叶金桥, 李兆敏, 等. 高温高压条件下CO₂-原油-水体系相间作用及其对界面张力的影响[J]. 石油学报, 2016,37(10):1265-1272.
	LI B F, YE J Q, LI Z M, et al. Phase interaction of CO₂-oil-water system and its effect on interfacial tension at high temperature and high pressure[J]. Acta Petrolei Sinica, 2016,37(10):1265-1272.
[7]	史云清, 贾英, 潘伟义, 等. 低渗致密气藏注超临界CO₂驱替机理[J]. 石油与天然气地质, 2017,38(3):610-616.
	SHI Y Q, JIA Y, PAN W Y, et al. Mechanism of supercritical CO₂ flooding in low-permeability tight gas reservoirs[J]. Oil & Gas Geology, 2017,38(3):610-616.
[8]	俞凯, 刘伟, 陈祖华. 陆相低渗透油藏CO2混相驱技术[M]. 北京: 中国石化出版社, 2016: 127-129.
	YU K, LIU W, CHEN Z H. CO2 miscible flooding technology in continental low permeability reservoir[M]. Beijing: China Petrochemical Press, 2016: 127-129.
[9]	蒋永平. CO₂复合驱油分子动力学模拟及微观机理研究[J]. 石油实验地质, 2019,41(2):274-279.
	JIANG Y P. Molecular dynamics simulation and microscopic mechanism of CO₂ composite flooding[J]. Petroleum Geology & Experiment, 2019,41(2):274-279.
[10]	王智林, 林波, 葛永涛, 等. 低渗油藏水驱后注CO₂补充能量机理及方式优化[J]. 断块油气田, 2019,26(2):231-235.
	WANG Z L, LIN B, GE Y T, et al. Mechanisms and optimization of supplementing in-situ energy by CO₂ injection after water flooding in low permeability reservoirs[J]. Fault-Block Oil & Gas Field, 2019,26(2):231-235.
[11]	吕洲, 王玉普, 李莉, 等. 油气储层岩心实验的样本量设计[J]. 石油实验地质, 2018,40(4):589-594.
	LYU Z, WANG Y P, LI L, et al. Sample size design for oil and gas reservoir core-plug experiments[J]. Petroleum Geology & Experiment, 2018,40(4):589-594.
[12]	朱桂良, 孙建芳, 刘中春. 塔河油田缝洞型油藏气驱动用储量计算方法[J]. 石油与天然气地质, 2019,40(2):436-442.
	ZHU G L, SUN J F, LIU Z C. An approach to calculate developed reserves in gas drive fractured-vuggy reservoirs in Tahe oilfield[J]. Oil & Gas Geology, 2019,40(2):436-442.
[13]	胡伟, 吕成远, 王锐, 等. 水驱转CO₂混相驱渗流机理及传质特征[J]. 石油学报, 2018,39(2):201-207.
	HU W, LYU C Y, WANG R, et al. Porous flow mechanisms and mass transfer characteristics of CO₂ miscible flooding after water flooding[J]. Acta Petrolei Sinica, 2018,39(2):201-207.
[14]	WANG Z L, YANG S L, LEI H, et al. Oil recovery performance and permeability reduction mechanisms in miscible CO₂, water-alternative-gas(WAG) injection after continuous CO₂ injection: an experimental investigation and modeling approach[J]. Journal of Petroleum Science & Engineering, 2017,150:376-385.
[15]	汤勇, 胡世莱, 汪勇, 等. “注入—压裂—返排”全过程的CO₂相态特征——以鄂尔多斯盆地神木气田致密砂岩气藏SH52井为例[J]. 天然气工业, 2019,39(9):58-64.
	TANG Y, HU S L, WANG Y, et al. Phase behaviors of CO₂ in the whole process of injection-fracturing-flowback: a case study of Well SH52 in a tight sandstone gas reservoir of the Shenmu Gas Field, Ordos Basin[J]. Natural Gas Industry, 2019,39(9):58-64.
[16]	郭省学. 高温高压条件下CO₂驱稠油微观运移特征[J]. 油气地质与采收率, 2019,26(3):99-104.
	GUO X X. Study on microscopic migration characteristics of heavy oil by CO₂ flooding at high temperature and high pressure[J]. Petroleum Geology and Recovery Efficiency, 2019,26(3):99-104.
[17]	杨胜来, 魏俊之. 油层物理学[M]. 北京: 石油工业出版社, 2015: 212-215.
	YANG S L, WEI J Z. Reservoir petrophysics[M]. Beijing: Petroleum Industry Press, 2015: 212-215.
[18]	WANG X Q, GU Y A. Oil recovery and permeability reduction of a tight sandstone reservoir in immiscible and miscible CO₂ flooding processes[J]. Industrial & Engineering Chemistry Research, 2011,50(4):2388-2399.
[19]	王海妹. CO₂驱油技术适应性分析及在不同类型油藏的应用——以华东油气分公司为例[J]. 石油地质与工程, 2018,32(5):63-65.
	WANG H M. Adaptive analysis of CO₂ flooding technology and its application in different types of reservoirs[J]. Petroleum Geology and Engineering, 2018,32(5):63-65.
[20]	LEI H, YANG S L, ZU L H, et al. Oil recovery performance and CO₂ storage potential of CO₂ water-alternating-gas injection after continuous CO₂ injection in a multilayer formation[J]. Energy & Fuels, 2016,30(11):8922-8931.
[21]	王猛, 王海柱, 李根生, 等. 超临界CO₂压裂缝内携砂数值模拟[J]. 石油机械, 2018,46(11):72-78.
	WANG M, WANG H Z, LI G S, et al. Numerical study of proppant transport with supercritical CO₂ in fracture[J]. China Petroleum Machinery, 2018,46(11):72-78.

地层压力/ MPa	关井气油比/ （m³·m^-3）	提升采出程度/ %	总注气量/10⁴t	换油率/（t·t^-1）
21.5	1 000	2.35	2.6	0.32
23.0	1 000	2.92	3.7	0.37
25.0	1 000	3.52	4.9	0.35
28.5	1 000	3.87	8.3	0.29

序号	储层压力/ MPa	关井气油比/ （m³·m^-3）	提升采出程度/ %	总注气量/10⁴ t	换油率/ （t·t^-1）
1	25	300	2.23	2.8	0.40
2	25	600	2.86	3.9	0.37
3	25	1 000	3.52	4.9	0.35
4	25	2 000	3.83	5.3	0.32

Dominant mechanism and application of CO₂ immiscible flooding in M block with low permeability

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Dominant mechanism and application of CO2 immiscible flooding in M block with low permeability

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Dominant mechanism and application of CO₂ immiscible flooding in M block with low permeability