Simulation and Optimization of Downhole Gas-Liquid Separator at Low Liquid Rate and High GLR Wells From CO2 Flooding Reservoir

doi:10.11885/j.issn.1674-5086.2014.12.15.03

Abstract

Abstract: CO₂ flooding technology was well applied in low permeability reservoirs in Jilin Oilfield, where production wells are characterized by small liquid rate and high gas liquid ratio, which has a serious effect on the sucker rod pump system, such as low pump efficiency. Aiming at dropping the gas rate pumped into sucker rod in those wells, we developed a new downhole gas-liquid separator on the basis of gas separation principle of the conventional gravity type gas anchor and that of spiral gas anchor. In this paper, CFD is improved to optimize its parameters. Suspended point motion of pump unitsis taken as boundary conditions of the motion pump, the surface gas-liquid ratio is replaced by the gas-liquid ratio and bubble breakage and aggregation are taken into consideration. The swabbing parameters of sucker rod pump were selected to get its high efficiency. The new downhole gas-liquid separator was installed at Well X. The casing pressure dropped from 9.5 MPa to 0.4 MPa, daily liquid production rate increased from 1.5 t/d to 17.4 t/d, and the pump efficiency was 84.6% when the daily gas volume rate is 792 m³/d. Its pump efficiency is higher than the average pump efficiency of 40.1% of other wells in the same block. The study has important practical significance in application of CO₂ flooding and has an important reference in similar high gas liquid ratio wells with sucker rod pump.

Key words: CO₂ drive, low permeability reservoir, downhole gas-liquid separator, computational fluid dynamics, simulated analysis

CLC Number:

TE931

LIU Yonghui, ZHANG Nan, PAN Ruosheng, ZHANG Deping, WANG Wubing. Simulation and Optimization of Downhole Gas-Liquid Separator at Low Liquid Rate and High GLR Wells From CO₂ Flooding Reservoir[J]. 西南石油大学学报(自然科学版), 2016, 38(6): 131-137.

0
/ / Recommend

Add to citation manager EndNote|Ris|BibTeX

URL: http://journal15.magtechjournal.com/Jwk_xnzk/EN/10.11885/j.issn.1674-5086.2014.12.15.03

http://journal15.magtechjournal.com/Jwk_xnzk/EN/Y2016/V38/I6/131

References

[1] 曹学良,郭平,杨学峰,等. 低渗透油藏注气提高采收率前景分析[J]. 天然气工业, 2006, 26(3):100-102. doi:10.3321/j.issn:1000-0976.2006.03.033 CAO Xueliang, GUO Ping, YANG Xuefeng, et al. An analysis of prospect of EOR by gas injection in lowpermeability oil reservoir[J]. Natural Gas Industry, 2006, 26(3):100-102. doi:10.3321/j.issn:1000-0976.2006.03.033
[2] 蒋永平,唐人选. CO₂混相驱油藏高气油比生产特征分析及认识[J]. 复杂油气藏, 2010, 3(2):72-76. doi:10.3969/j.issn.1674-4667.2010.02.019 JIANG Yongping, TANG Renxuan. Analysis and cognition of high GOR production characteristics of reservoir for CO₂ miscible displacement[J]. Complex Hydrocarbon Reservoirs, 2010, 3(2):72-76. doi:10.3969/j.issn.1674-4667.2010.02.019
[3] 赵天录. 气液置换型防气锁反馈泵的研制与应用[J]. 石油钻采工艺, 2014, 36(5):128-130. doi:10.13639/j.odpt.2014.05.032 ZHAO Tianlu. Development and application of antiairlock feedback pump of gas-liquid replacement type[J]. Oil Drilling & Production Technology, 2014, 36(5):128-130. doi:10.13639/j.odpt.2014.05.032
[4] 辜志宏,彭慧琴,耿会英. 气体对抽油泵泵效的影响及对策[J]. 石油机械, 2006, 34(2):64-68. doi:10.3969/j.issn.1001-4578.2006.02.022 GU Zhihong, PENG Huiqin, GENG Huiying. An experimental/practical investigation of the pumping efficiency in the presence of gas[J]. China Petroleum Machinery, 2006, 34(2):64-68. doi:10.3969/j.issn.1001-4578.2006.02.022
[5] 陈琴,吴晓东,吴甫让. 气锚分气效率的实验研究[J]. 西南石油大学学报(自然科学版), 2008, 30(4):173-175. doi:10.3863/j.issn.1000-2634.2008.04.045 CHEN Qin, WU Xiaodong, WU Furang. Experiment on gas anchor separation efficiency[J]. Journal of Southwest Petroleum University (Science & Technology Edition), 2008, 30(4):173-175. doi:10.3863/j.issn.1000-2634.2008.04.045
[6] 丁明华,李海英,贾鹏,等. 抽油井大孔多节虹吸式气锚的研制[J]. 石油机械, 2012, 40(4):90-92. DING Minghua, LI Haiying, JIA Peng, et al. Development of the macroporous siphon gas anchor for pumping wells[J]. China Petroleum Machinery, 2012, 40(4):90-92.
[7] 李汉周,杨海滨,石建设,等. 变螺距双螺旋气锚的研制与应用[J]. 钻采工艺, 2013, 36(6):89-91. doi:10.3969/J.ISSN.1006-768X.2013.06.26 LI Hanzhou, YANG Haibin, SHI Jianshe, et al. Development and application of double-helical gas anchor with variable pitch[J]. Drilling & Production Technology, 2013, 36(6):89-91. doi:10.3969/J.ISSN.1006-768X.2013.06.26
[8] 赵永武. 电潜泵油气分离器测试工艺研究[J]. 石油机械, 2011, 39(10):7-9. ZHAO Yongwu. Research on the testing technology for the oil-gas separator of the electric submersible pump[J]. China Petroleum Machinery, 2011, 39(10):7-9.
[9] 刘新福,吴建军,綦耀光,等. 煤层气井气体对有杆泵排采的影响[J]. 中国石油大学学报(自然科学版), 2011, 35(4):144-149. doi:10.3969/j.issn.1673-5005.2011.04.027 LIU Xinfu, WU Jianjun, QI Yaoguang, et al. Effect of gas on sucker rod pump for coalbed methane well[J]. Journal of China University of Petroleum (Edition of Natural Science), 2011, 35(4):144-149. doi:10.3969/j.issn.1673-5005.2011.04.027
[10] 杨树人,汪岩,王春生,等. 多杯等流型气锚的水力设计[J]. 大庆石油学院学报, 2006, 30(3):34-36. doi:10.3969/j.issn.2095-4107.2006.03.011 YANG Shuren, WANG Yan, WANG Chunsheng, et al. Hydraulic design for liquid-gas separator with multi-cups and isoflowrate[J]. Journal of Daqing Petroleum Institute, 2006, 30(3):34-36. doi:10.3969/j.issn.2095-4107.2006.03.011
[11] 黄贻生,韩进,杨丽梅. 螺旋式气锚在抽油井的应用[J]. 石油机械, 1987, 15(6):45-49. HUANG Yisheng, HAN Jin, YANG Limei. Application of screw type gas anchor in pumping well[J]. China Petroleum Machinery, 1987, 15(6):45-49.
[12] 薄启炜,张琪,林博,等. 螺旋式井下油气分离器设计与分析[J]. 石油机械,2003,31(1):8-10. doi:10.3969/j.issn.1001-4578.2003.01.003 BO Qiwei, ZHANG Qi, LIN Bo, et al. Design and analysis of a novel helical downhole oil-gas separator[J]. China Petroleum Machinery, 2003, 31(1):8-10. doi:10.3969/j.issn.1001-4578.2003.01.003
[13] CAMPBELL J H, BRIMHALL R M. An engineering approach to gas anchor design[C]. SPE 18826, 1989. doi:10.2118/18826-MS
[14] PODIO A L, MCCOY J N, DRAKE B, et al. Decentralized continuous-flow gas anchor[J]. Journal of Canadian Petroleum Technology, 1996, 35(7):24-30. doi:10.2118/96-07-03
[15] BOHORQUEZ R R, ANANABA O V, ALABI O A, et al. Laboratory testing of downhole gas separators[J]. SPE Production & Operations, 2009, 24(4):499-509. doi:10.2118/109532-PA
[16] CARIOS E, VEGA L, PARDO R, et al. Experimental study of a poor boy downhole gas separator under continuous gas-liquid flow[C]//SPE Artificial Lift ConferenceAmericas. Cartagena, Colombia:Society of Petroleum Engineers, 2013. doi:10.2118/165033-MS
[17] JAMES K P. Separator for wells:United States, US 1279758[P]. 1917-09-24.
[18] 曲占庆,田相雷,袁世昌,等. 螺旋式井下油气分离器设计与分离效果分析[J]. 石油矿场机械, 2011, 40(6):39-43. doi:10.3969/j.issn.1001-3482.2011.06.010 QU Zhanqing, TIAN Xianglei, YUAN Shichang, et al. Design for downhole spiral gas separator and analysis of separation[J]. Oil Field Equipment, 2011, 40(6):39-43. doi:10.3969/j.issn.1001-3482.2011.06.010
[19] WARD J E. Downhole oil/gas separator and method of separating oil and gas downhole:United States, US 4531584[P]. 1985-07-30.
[20] RAGLIN J M. Down-hole gas separator:United States, US 20130032341[P]. 2013-07-02.

Simulation and Optimization of Downhole Gas-Liquid Separator at Low Liquid Rate and High GLR Wells From CO₂ Flooding Reservoir

PDF (PC)

Knowledge

Abstract

Cite this article

share this article

References

Related Articles 15

Recommended Articles

Metrics

Comments

[1]	BAI Hui, TIAN Min, FENG Min, LIU Pengcheng, WANG Haitao. Productivity Model and its Influencing Factors for Multistage Fractured Horizontal Wells in Low Permeability Reservoirs [J]. 西南石油大学学报(自然科学版), 2019, 41(3): 113-120.
[2]	SUN Zhigang, MA Bingjie, LI Fen. Mechanism and Characteristics of Nonlinear Flow in Porous Media of Low Permeability Reservoir [J]. 西南石油大学学报(自然科学版), 2019, 41(2): 109-117.
[3]	ZHAO Xisen, SHI Lihua, WANG Weibo, BAI Yuan, TIAN Feng. CO₂ Channeling Sealing In Ultra-low-permeability Reservoirs [J]. 西南石油大学学报(自然科学版), 2017, 39(6): 131-139.
[4]	LIU Jianjun, WU Mingyang, SONG Rui, HUANG Liuke, DAI Xiaojun. Study on Simulation Method of Multi-scale Fractures in Low Permeability Reservoirs [J]. 西南石油大学学报(自然科学版), 2017, 39(4): 90-103.
[5]	ZHANG Liehui1*, ZHANG Ruihan1, JIANG Hexu2, KONG Ling2, SHE Juan2. Theoretical Analysis of Low Permeability Composite Reservoir Using#br# Finite Element Method [J]. 西南石油大学学报(自然科学版), 2016, 38(4): 1-8.
[6]	TAO Zhen*, TIAN Changbing, XIONG Chunming, ZHAO Ruidong. Research on Well Patterns and Fracture Models for Fractured#br# Horizontal Well in Ultra-low Permeability Reservoir [J]. 西南石油大学学报(自然科学版), 2016, 38(4): 101-109.
[7]	WANG Wei1*, YANG Hui2, HUANG Chunxia1, JIANG Shaojing1, YUE Xiangan3. Researches on Improving Sweep Efficiency After Water Breakthrough in#br# Ultra-low Permeability Heterogeneous Reservoir [J]. 西南石油大学学报(自然科学版), 2016, 38(3): 107-113.
[8]	Su Haibo*. A Flow Model Reflecting Dynamic Kick-off Pressure Gradient for Low#br# Permeability Reservoirs [J]. 西南石油大学学报(自然科学版), 2015, 37(6): 105-111.
[9]	Su Yuliang1, Ren Long1*, Zhao Guangyuan2, Zhan Shiyuan1, Meng Fankun1. Study on Reasonable Spacing Between Injection and Production Wells#br# Considering Fracturing in Low Permeability Reservoirs [J]. 西南石油大学学报(自然科学版), 2015, 37(6): 72-78.
[10]	Xiao Pufu1*, Yang Zhengming2, Wang Xuewu2, Dai Xingxing3. A Laboratory Study on the Micro Mechanism of Oil Displacement with CO2 Flooding [J]. 西南石油大学学报(自然科学版), 2015, 37(4): 161-165.
[11]	Zhang Xianguo1*, Zhang Tao2, Lin Chengyan1, Yu Jingfeng3. Lithology Recognition with Well Logs in Complex Lithologic Low Permeability Reservoirs in Ta′nan Depression [J]. 西南石油大学学报(自然科学版), 2015, 37(1): 85-90.
[12]	Hu Shuyong1, Li Liang1, Wu Rui2, Wang Yujie3, Li Lei1. Researches on Building Effective Displacement Pressure System of Advanced Water Injection in B239 Well-Block Reservoir [J]. 西南石油大学学报(自然科学版), 2014, 36(6): 123-127.
[13]	Wang Huan, Liao Xinwei, Zhao Xiaoliang. Research on CO2 Flooding Parameters Optimization of Extra-low Permeability Reservoirs [J]. 西南石油大学学报(自然科学版), 2014, 36(6): 95-104.
[14]	Yang Daqing1, Shang Qinghua2, Jiang Shaojing2, Huang Chunxia2, Tang Ruijia2. A Study About Influence Law of Permeability on Gas Channeling of CO2 Flooding Under Low Permeability Reservoirs [J]. 西南石油大学学报(自然科学版), 2014, 36(4): 137-141.
[15]	Sun Laixi1，2, Zhang Zonghui3, Wang Shili4, Luo Gang4, Deng Qingyang1. A New Method of Analysis of Low Permeability Reservoir Interwell Reserves Producing Status [J]. 西南石油大学学报(自然科学版), 2014, 36(2): 99-104.