致密砂岩气藏反凝析伤害及开采对策研究

doi:10.11885/j.issn.1674-5086.2022.01.24.05

摘要/Abstract

摘要： 针对中江气田沙溪庙组气藏反凝析伤害导致气井产量下降的问题，基于沙溪庙组气藏流体相态变化特征研究，通过长岩芯反凝析伤害实验及数值模拟分析评价反凝析对气藏开发的影响。结果表明，气藏在开发过程中，反凝析将导致储层中气相渗透率大幅降低，储层渗透率伤害率达32%，最大含凝析油饱和度1.8%，压裂改造工艺在一定程度上能降低气藏反凝析伤害，且储层渗透率越高，气藏反凝析对气井产能影响越小。根据中江沙溪庙组气藏生产特征分析，采用衰竭式开发方式更为适合，建议开采初期通过气井合理配产，延长气井露点压力以上生产时间，后期可介入泡排、柱塞气举等工艺排出井筒积液，确保气井稳定，最终达到提高气藏开发效益的目的。

关键词: 致密砂岩, 凝析气藏, 反凝析伤害, 数值模拟, 开采对策

Abstract: Retrograde condensation damage of gas reservoirs decreases the productivity of the gas well during the development of Shaximiao Formation in Zhongjiang Gas Field. According to the characteristics of fluid phase change in gas reservoir, the influence of retrograde condensate on gas reservoir development is evaluated by retrograde condensate damage experiments for the long core and numerical simulation analysis. The results show that during the development of the gas reservoir, the retrograde condensate damage will greatly reduce the gas phase permeability. The core permeability damage rate is 32%, and the maximum condensate saturation is 1.8%. The fracturing can effectively reduce the degree of the retrograde condensation damage, the higher the reservoir permeability is, the smaller the effect of reverse condensation on gas well productivity is. Based on the analysis of the production characteristics of Shaximiao Formation in Zhongjiang gas field, it is suggested to prolong the producing time above the dew point pressure by reasonable production allocation of gas wells in the early stage of production, means of foam drainage and plunger gas lift in the later stage can be used to discharge the accumulated oil in the wellbore, to ensure the stability of gas wells and ultimately improve the development benefit of gas reservoirs.

Key words: tight sandstone, condensate gas reservoir, retrograde condensate damage, numerical simulation, mining countermeasures

中图分类号:

TE353.3

李凤, 张本艳, 朱婧. 致密砂岩气藏反凝析伤害及开采对策研究[J]. 西南石油大学学报(自然科学版), 2022, 44(3): 197-206.

LI Feng, ZHANG Benyan, ZHU Jing. Research on the Retrograde Condensate Damage and Development Strategies in Tight Sandstone Gas Reservoir[J]. Journal of Southwest Petroleum University(Science & Technology Edition), 2022, 44(3): 197-206.

0
/ / 推荐

导出引用管理器 EndNote|Ris|BibTeX

链接本文: http://journal15.magtechjournal.com/Jwk_xnzk/CN/10.11885/j.issn.1674-5086.2022.01.24.05

http://journal15.magtechjournal.com/Jwk_xnzk/CN/Y2022/V44/I3/197

参考文献

[1] 戴岑璞,王自明. 低渗透凝析气藏的反凝析特征[J]. 天然气工业,2007,27(11):79-81. doi:10.3321/j.issn:1000-0976.2007.11.024 DAI Cenpu, WANG Ziming. Retrograde condensation behaviors in low-permeability gas condensate reservoirs[J]. Natural Gas Industry, 2007, 27(11):79-81. doi:10.3321/j.issn:1000-0976.2007.11.024
[2] 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. doi:10.3863/j.issn.1674-5086.2007.02.010 PAN Yi, SUN Lei, LI Shilun, 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. doi:10.3863/j.issn.16745086.2007.02.010
[3] 邹春梅,汤勇,晏军,等. 凝析气藏反凝析伤害评价方法及应用[J]. 油气藏评价与开发,2019,9(6):30-34,41. doi:10.3969/j.issn.2095-1426.2019.06.005 ZOU Chunmei, TANG Yong, YAN Jun, et al. The evaluation methods and application of retrograde condensation damage in condensate gas reservoir[J]. Reservoir Evaluation and Development, 2019, 9(6):30-34, 41. doi:10.3969/j.issn.2095-1426.2019.06.005
[4] AL-ANAZI H A, WALKER J G, POPE G A, et al. A successful methanol treatment in a gas-condensate reservoir:Field application[J]. SPE Production & Facilities, 2005, 20(1):60-69. doi:10.2118/80901-PA
[5] 冯强汉,邓宝康,杨映洲,等. 致密砂岩凝析气藏反凝析伤害评价及解除方法[J]. 大庆石油地质与开发,2020,39(2):139-146. doi:10.19597/J.ISSN.1000-3754.201905014 FENG Qianghan, DENG Baokang, YANG Yingzhou, et al. Evaluations and removing methods of the retrograde condensate damage for the gas condensate reservoirs in the tight sandstone[J]. Petroleum Geology & Oilfield Development in Daqing, 2020, 39(2):139-146. doi:10.19597/J.ISSN.1000-3754.201905014
[6] AHMADI M A, EBADI M, MARGHMALEKI P S, et al. Evolving predictive model to determine condensate-to-gas ratio in retrograded condensate gas reservoirs[J]. Fuel, 2014, 124:241-257. doi:10.1016/j.fuel.2014.01.073
[7] BENNION D B, THOMAS F B, SCHULMEISTER B. Retrograde condensate dropout phenomena in rich gas reservoirs-impact on recoverable reserves, permeability, diagnosis, and stimulation techniques[J]. Journal of Canadian Petroleum Technology, 2001, 40(12):5-8. doi:10.2118/01-12-N1
[8] 李俞虹. 让那若尔凝析气藏反凝析伤害评价及解除方法[D]. 成都:西南石油大学,2019. LI Yuhong. Evaluation and removal method of reverse condensate damage in ranaror condensate gas reservoir[D]. Chengdu:Southwest Petroleum University, 2019.
[9] 乐平,曾凡成,杨智帆,等. SJ低渗气藏反凝析污染评价实验研究[J]. 新疆石油天然气,2020,16(2):78-82. doi:10.19901/j.fcgyq.2021.03.07 YUE Ping, ZENG Fancheng, YANG Zhifan, et al. Experimental study on retrograde condensate pollution evaluation of SJ low permeability gas reservoir[J]. Xinjiang Oil& Gas, 2020, 16(2):78-82. doi:10.19901/j.fcgyq.2021.03.07
[10] 周小平,周丽梅. 凝析气藏反凝析伤害研究[J]. 天然气技术,2007(3):19-24,93. ZHOU Xiaoping, ZHOU Limei. Study on retrograde condensate damage in gas condensate reservoir[J]. Natural Gas Technology, 2007(3):19-24, 93.
[11] 曾焱,黎华继,周文雅,等. 川西坳陷东坡中江气田沙溪庙组复杂"窄"河道致密砂岩气藏高产富集规律[J]. 天然气勘探与开发,2017,40(4):1-8. doi:10.12055/gaskk.issn.1673-3177.2017.04.001 ZENG Yan, LI Huaji, ZHOU Wenya, et al. High-yield enrichment laws of Shaximiao Formation tight sandstone gas reservoir of complex "narrow" channel in Zhongjiang Gas Field, in the eastern slope of West Sichuan Depression[J]. Natural Gas Exploration and Development, 2017, 40(4):1-8. doi:10.12055/gaskk.issn.1673-3177.2017.04.001
[12] 肖丽仙,杜建芬,郭平,等. 凝析气藏反凝析污染研究[J]. 断块油气田,2009,16(4):102-104. XIAO Lixian, DU Jianfen, GUO Ping, et al. Pollution caused by retrograde condensate in condensate gas reservoir[J]. Fault-Block Oil and Gas Field, 2009, 16(4):102-104.
[13] 陈健,周展,王勇标,等. 文昌低渗凝析气藏反凝析伤害相态特征研究[J]. 山东化工,2019,48(8):136-137,141. doi:10.3969/j.issn.1008-021X.2019.08.057 CHEN Jian, ZHOU Zhan, WANG Yongbiao, et al. Study on the phase characteristics of condensation damage in Wenchang low permeability condensate gas reservoir[J]. Shandong Chemical Industry, 2019, 48(8):136-137, 141. doi:10.3969/j.issn.1008-021X.2019.08.057
[14] 朱绍鹏,李文红. 反凝析对凝析气井产能的影响研究[J]. 油气井测试,2007,16(3):26-27,30. doi:10.3969/j.issn.1004-4388.2007.03.008 ZHU Shaopeng, LI Wenhong. The influence of retrograde condensate on productivity of condensate gas well[J]. Well Testing, 2007, 16(3):26-27, 30. doi:10.3969/j.issn.1004-4388.2007.03.008
[15] 王少飞,汪周华,张雅玲,等. 压裂解除凝析气井反凝析伤害的新认识[J]. 油气藏评价与开发,2018,8(2):30-34. doi:10.3969/j.issn.2095-1426.2018.02.005 WANG Shaofei, WANG Zhouhua, ZHANG Yaling, et al. A new cognition of the reduction of retrograde condensation damage in gas condensate wells by fracturing[J]. Reservoir Evaluation and Development, 2018, 8(2):30-34. doi:10.3969/j.issn.2095-1426.2018.02.005
[16] 张冲,宋宪实,汤勇. 龙凤山特低孔特低渗凝析气藏反凝析伤害实验研究[J]. 西安石油大学学报(自然科学版),2020,35(2):50-53,97. doi:10.3969/j.issn.1673064X.2020.02.007 ZHANG Chong, SONG Xianshi, TANG Yong. Experimental study on retrograde condensate damage of Longfengshan extra-low porosity and extra-low permeability condensate gas reservoir[J]. Journal of Xi'an Shiyou University (Natural Science Edition), 2020, 35(2):50-53, 97. doi:10.3969/j.issn.1673-064X.2020.02.007
[17] 高奕奕,孙雷,张庆生,等. 低渗凝析气井反凝析、反渗吸伤害及解除方法[J]. 西南石油学院学报,2005,27(2):45-49. doi:10.3863/j.issn.1674-5086.2005.02.013 GAO Yiyi, SUN Lei, ZHANG Qingsheng, et al. Low permeability condensate gas well, retrograde condensate, reverse imbibition damage and removing methods[J]. Journal of Southwest Petroleum Institute, 2005, 27(2):45-49. doi:10.3863/j.issn.1674-5086.2005.02.013
[18] 李骞,李相方,李艳静,等. 凝析气藏不同开发阶段的合理生产压差探讨[J]. 西南石油大学学报(自然科学版),2012,34(1):121-126. doi:10.3863/j.issn.1674-5086.2012.01.019 LI Qian, LI Xiangfang, LI Yanjing, et al. Research of reasonable producing pressure drop of gas condensate reservoir on different period[J]. Journal of Southwest Petroleum University (Seience & Technology Edition), 2012, 34(1):121-126. doi:10.3863/j.issn.1674-5086.2012.01.019
[19] 张宇飞,赵法军,徐天晓,等. 凝析气藏注CO$_2$解除反凝析伤害评价[J]. 当代化工,2021,50(1):217-220,224. doi:10.3969/j.issn.1671-0460.2021.01.049 ZHANG Yufei, ZHAO Fajun, XU Tianxiao, et al. Evaluation of removing retrograde condensate damage by injecting CO$_2$ into condensate gas reservoir[J]. Contemporary Chemical Industry, 2021, 50(1):217-220, 224. doi:10.3969/j.issn.1671-0460.2021.01.049
[20] 高建军,韩继凡,郝巍,等. 丘东气田反凝析污染评价及解除方法研究[J]. 特种油气藏,2010,17(2):85-87. doi:10.3969/j.issn.1006-6535.2010.02.023 GAO Jianjun, HAN Jifan, HAO Wei, et al. Study on evaluation and removal of retrograde condensate damage in Qiudong Gas Filed[J]. Special Oil & Gas Reservoirs, 2010, 17(2):85-87. doi:10.3969/j.issn.1006-6535.2010.02.023
[21] 武俊文,张汝生,王海波,等. 耐高含量凝析油泡排剂的研制及现场应用[J]. 油田化学,2019,36(3):508-512,534. doi:10.19346/j.cnki.1000-4092.2019.03.023 WU Junwen, ZHANG Rusheng, WANG Haibo, et al. Research and field application of high content of condensate oil resistance foam unloading agent[J]. Oilfield Chemistry, 2019, 36(3):508-512, 534. doi:10.19346/j.cnki.10004092.2019.03.023
[22] 陈雅溪,王尧,李小可,等. 高含凝析油气井泡沫排液用起泡剂研究[J]. 油田化学,2013,30(4):544-547. CHEN Yaxi, WANG Yao, LI Xiaoke, et al. Research of foam frother for high content of condensate oil-gas well[J]. Oilfield Chemistry, 2013, 30(4):544-547.
[23] 梅华平,李凯,郝洁,等. 气田柱塞气举制度优化及运行智能化研究[J]. 石油化工应用,2020,39(1):111-113. doi:10.3969/j.issn.1673-5285.2020.01.024
[24] 董耀文,谭明文,周兴付. 柱塞气举在川西地区定向井中的应用研究[J]. 天然气工业,2011,31(6):53-55. doi:10.3787/j.issn.1000-0976.2011.06.010 DONG Yaowen, TAN Mingwen, ZHOU Xingfu. Application of plunger air lift in directional wells in the Western Sichuan Basin[J]. Natural Gas Industry, 2011, 31(6):53-55. doi:10.3787/j.issn.1000-0976.2011.06.010