让纳若尔A南凝析气藏CO2吞吐提高凝析油产量研究

doi:10.13809/j.cnki.cn32-1825/te.2020.03.004

摘要/Abstract

摘要：

让纳若尔A南凝析气藏在正式开发前已发生严重的反凝析,造成凝析油损失严重。探索提高凝析油产量方法对油田下一步开发显得尤为重要。为此,以A南某典型井为例,应用相平衡理论和油藏数值模拟技术,分析了地层流体反凝析规律和凝析油分布特征,研究了CO₂吞吐提高气井凝析油产量机理及效果。结果表明,气藏反凝析分为恒质膨胀和定容衰竭2个阶段,凝析油主要聚集在井筒周围30 m内,凝析油饱和度范围22.44 %~29.51 %。CO₂提高凝析油产量的机理主要是改变地层流体反凝析规律、降低反凝析界限和蒸发凝析油。但当CO₂注入量较少时,CO₂蒸发凝析油能力有限。为确保CO₂吞吐增油效果,CO₂的周期注入量应该超过500×10 ⁴ m ³。该研究对类似凝析气藏开发中后期提高凝析油产能及解堵具有指导意义。

关键词: A南凝析气藏, CO₂吞吐, 凝析油, 提高采收率, 反凝析评价, 让纳若尔油田

Abstract:

Serious retrograde condensation has occurred before the development of gas cap in South A condensate gas reservoir of Zanarol Oilfield, resulting in serious loss of condensate oil. It is particularly important to explore the method of improving the production of condensate oil for the further development of oilfield. Therefore, taking a typical well in South A gas reservoir as a example, the phase equilibrium theory and numerical simulation are applied to study the retrograde condensation rule of formation fluid and the distribution of condensate oil in formation. On this basis, the mechanism and effect of condensate oil enhancement by CO₂ huff-n-puff are researched. The results show that retrograde condensation in South A gas reservoir has two stages: constant composition expansion（CCE） and constant volume depletion（CVD）. Condensate oil distributes mainly within 30 m of wellbore, and its saturation ranges from 22.44 % to 29.51 %. The mechanism of CO₂ increasing condensate production is to change the retrograde condensation rule, reduce pressure condition of retrograde condensation, and evaporate condensate oil. However, if the injection volume of CO₂ is low, the volume of vaporized condensate oil will be small, which limits the effect of EOR. Therefore, the cumulative injection of CO₂ should be more than 500×10 ⁴ m ³ at a cycle to ensure the effect of CO₂ huff-n-puff. This study has guiding significance for condensate oil enhancement and plug removal in the middle and later stages of similar condensate gas reservoir development.

Key words: South A condensate gas reservoir, CO₂ huff-n-puff, condensate oil, recovery enhancement, evaluation of retrograde condensation, Zanarol Oilfield

中图分类号:

TE372

赫安乐,邹春梅,崔轶男,晏军,张合文,汤勇. 让纳若尔A南凝析气藏CO₂吞吐提高凝析油产量研究[J]. 油气藏评价与开发, 2020, 10(3): 28-32.

HE Anle,ZOU Chunmei,CUI Yinan,YAN Jun,ZHANG Hewen,TANG Yong. Research on enhancing condensate oil production by CO₂ huff-n-puff in South A condensate gas reservoir of Zanarol Oilfield[J]. Reservoir Evaluation and Development, 2020, 10(3): 28-32.

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参考文献 18

[1]	宋珩, 傅秀娟, 范海亮, 等. 带气顶裂缝性碳酸盐岩油藏开发特征及技术政策[J]. 石油勘探与开发, 2009,36(6):756-761.
	SONG H, FU X J, FAN H L, et al. Development of complex carbonate reservoir with condensate gas cap[J]. Petroleum Exploration & Development, 2009,36(6):756-761.
[2]	夏相成, 佘明军, 刘燕函, 等. 水平井开发低渗薄层碳酸盐岩油藏关键技术——以让纳若尔油田为例[J]. 录井工程, 2018,29(3):22-27.
	XIA X C, SHE M J, LIU Y H, et al. Study on key technology for horizontal well development of thin carbonate reservoir with low permeability: a case of Zanarol Oilfield[J]. Mud Logging Engineering, 2018,29(3):22-27, 32.
[3]	喻莲, 汪伟光. 凝析气顶油藏剩余油分布模式及挖潜对策——以让纳若尔油田A南和Б南层系为例[J]. 重庆科技学院学报(自然科学版), 2011,13(5):11-13.
	YU L, WANG W G. The remaining oil distribution pattern and potential tapping measures for condensate gas-cap reservoir a case study from South A and South B in Zanarol Oilfield[J]. Journal of Chongqing University of Science and Technology(Natural Sciences Edition), 2011,13(5):11-13.
[4]	李士伦, 潘毅, 孙雷. 提高凝析气藏采收率的新思路[J]. 天然气工业, 2008,28(9):1-5.
	LI S L, PAN Y, SUN L. An new idea on enhancing the recovery rate of condensate gas reservoirs[J]. Natural Gas Industry, 2008,28(9):1-5.
[5]	AYUB M, RAMADAN M. Mitigation of near wellbore gas-condensate by CO₂ huff-n-puff injection: A simulation study[J]. Journal of Petroleum Science and Engineering, 2019,175:998-1027. doi: 10.1016/j.petrol.2018.12.066
[6]	杜建芬, 肖翠, 汪周华, 等. BK气藏反凝析污染评价及解除方法实验[J]. 天然气工业, 2015,35(4):52-56.
	DU J F, XIAO C, WANG Z H, et al. Laboratory study on the evaluation and removal of retrograde condensate damage in the Baka gas reservoir, Tuha basin[J]. Natural Gas Industry, 2015,35(4):52-56.
[7]	SHENG J J, MODY F, GRIFFITH P J, et al. Potential to increase condensate oil production by huff-n-puff gas injection in a shale condensate reservoir[J]. Journal of Natural Gas Science & Engineering, 2016,28:46-51.
[8]	潘毅, 孙雷, 李士伦, 等. 凝析气藏解除反凝析污染、提高气井产能方法[J]. 西南石油大学学报, 2007,29(2):37-40.
	PAN Y, SUN L, LI S L, et al. The method solving condensate block and improving productivity of gas condensate reservoir[J]. Journal of Southwest Petroleum University, 2007,29(2):37-40.
[9]	汤勇, 尹鹏, 汪勇, 等. CO₂混相驱的可行性评价[J]. 西南石油大学学报(自然科学版), 2014,36(2):133-138. doi: 10.11885/j.issn.1674-5086.2013.09.22.03
	TANG Y, YIN P, WANG Y, et al. Feasibility assessment of the CO₂ miscible flooding process[J]. Journal of Southwest Petroleum University(Science & Technology Edition), 2014,36(2):133-138. doi: 10.11885/j.issn.1674-5086.2013.09.22.03
[10]	冯文彦. 超临界凝析气藏开发后期注CO₂提高采收率——以北部湾盆地福山凹陷莲4断块为例[J]. 天然气工业, 2016,36(7):57-62.
	FENG W Y. Recovery enhancement at the later stage of supercritical condensate gas reservoir development via CO2 injection: A case study on Lian 4 fault block in the Fushan sag, Beibuwan Basin[J]. Natural Gas Industry, 2016,36(7):57-62.
[11]	YUAN C W, ZHANG Z, LIU K J. Assessment of the recovery and front contrast of CO₂ EOR and sequestration in a new gas condensate reservoir by compositional simulation and seismic modeling[J]. Fuel, 2015,142:81-86. doi: 10.1016/j.fuel.2014.10.045
[12]	LI H, LI X F, ZHAO L, et al. Changing of dew point pressure for condensate gas in gas injection[J]. Journal of Shaanxi University of Science & Technology, 2009,27(5):12-16.
[13]	UCHENNA O. Analysis and potential of CO₂ huff-n-puff for near wellbore condensate removal and enhanced gas recovery[C]// paper SPE-160917-STU presented at the SPE Annual Technical Conference and Exhibition, 8-10 October 2012, San Antonio, Texas, USA.
[14]	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.
[15]	汤勇, 陈淑曲, 孙雷, 等. 地层水对凝析气藏注CO₂相态的影响[J]. 天然气工业, 2016,36(5):51-57.
	TANG Y, CHEN S Q, SUN L, et al. Impacts of formation water on the phase behavior of CO₂ injected into gas condensate reservoirs[J]. Natural Gas Industry, 2016,36(5):51-57.
[16]	喻莲, 赵伦, 陈礼, 等. 带凝析气顶油藏气顶油环协同开发技术政策研究[J]. 新疆石油天然气, 2012,8(1):66-69.
	YU L, ZHAO L, CHEN L, et al. Research on simultaneous development of oil and gas for reservoir with condensate gas-cap[J]. Xinjiang Oil & Gas, 2012,8(1):66-69.
[17]	汤勇, 张超, 杜志敏, 等. CO₂驱提高气藏采收率及埋存实验[J]. 油气藏评价与开发, 2015,5(5):34-40.
	TANG Y, ZHANG C, DU Z M, et al. Experiment on enhancing gas recovery and sequestration by CO₂ displacement[J]. Reservoir Evaluation and Development, 2015,5(5):34-40.
[18]	汤勇, 杜志敏, 孙雷, 等. CO₂在地层水中溶解对驱油过程的影响[J]. 石油学报, 2011,32(2):311-314.
	TANG Y, DU Z M, SUN L, et al. Influence of CO₂ dissolving in formation water on CO₂ flooding process[J]. Acta Petrolei Sinica, 2011,32(2):311-314.

组分	摩尔分数/%	组分	摩尔分数/%
He	0.04	n-C₄	1.23
N₂	2.67	i-C₅	0.55
CO₂	0.71	n-C₅	0.64
H₂S	0.94	C₆	0.96
C₁	77.68	C₇	1.05
C₂	6.99	C₈	0.86
C₃	3.83	C₉	0.52
i-C₄	0.67	C₁₀⁺	0.66

让纳若尔A南凝析气藏CO₂吞吐提高凝析油产量研究

Research on enhancing condensate oil production by CO₂ huff-n-puff in South A condensate gas reservoir of Zanarol Oilfield

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