Experimental Study on Improving Recovery Efficiency of Tight Oil Reservoirs with Supercritical Carbon Dioxide Flooding

doi:10.3969/j.issn.1006-6535.2021.03.018

Special Oil & Gas Reservoirs ›› 2021, Vol. 28 ›› Issue (3): 118-123.DOI: 10.3969/j.issn.1006-6535.2021.03.018

• Reservoir Engineering • Previous Articles Next Articles

Experimental Study on Improving Recovery Efficiency of Tight Oil Reservoirs with Supercritical Carbon Dioxide Flooding

Zhou Xiang^1,2, Zhou Dan³, Deng Jiasheng³, Deng Jingyi³, Ray Rui⁴, Jiang Zheren⁵

1. Southwest Petroleum University, Chengdu, Sichuan 610500, China;
2. State Key Laboratory of Oil and Gas Reservoir Geology and Exploration, Chengdu, Sichuan 610500, China;
3. PetroChina Xinjiang Oilfield Company, Karamay, Xinjiang 834000, China;
4. Massachusetts Institute of Technology, Cambridge, MA 02139, USA;
5. Engineering Services Company of CNPC Great Wall Drilling Company, Panjin, Liaoning 124010, China

Received:2020-09-07 Revised:2021-03-12 Online:2021-06-25 Published:2022-02-16

Abstract

Abstract: In view of rapid decline in oil recovery rate in the late stage of natural depletion of tight oil reservoirs in the Mahu area, a study design of developing tight oil reservoirs with supercritical CO₂ displacement was put forward. The experiments on tight oil extraction with supercritical CO₂, minimum miscibility pressure and long core displacement were conducted to study the mechanism, development characteristics and influence factors of improving recovery efficiency of tight oil reservoirs with supercritical CO₂ displacement, and optimize important operating parameters such as gas injection rate and CO₂ injection occasion. The experimental results show that the capacity of light component after CO₂ extraction decreased with the increase of extraction times; the gas injection rate had a greater impact on the final recovery efficiency, and the optimal gas injection rate was 0.10 cm³/min; the minimum miscibility pressure of crude oil and supercritical CO₂ was 34.18 MPa; the current pressure in the reservoir was the best occasion for CO₂ injection. The study results play a guiding role in the efficient development of tight oil reservoirs.

Key words: supercritical carbon dioxide, tight oil reservoirs, improve recovery efficiency, carbon dioxide flooding, optimization of injection occasion, Mahu Area

CLC Number:

TE312

Zhou Xiang, Zhou Dan, Deng Jiasheng, Deng Jingyi, Ray Rui, Jiang Zheren. Experimental Study on Improving Recovery Efficiency of Tight Oil Reservoirs with Supercritical Carbon Dioxide Flooding[J]. Special Oil & Gas Reservoirs, 2021, 28(3): 118-123.

References

[1] 施雷庭,朱诗杰,马杰,等.超临界CO₂萃取致密油的数值模拟[J].油气藏评价与开发, 2019,9(3):25-31.
SHI Leiting,ZHU Shijie,MA Jie,et al.Numerical simulation of tight oil extraction with supercritical C0₂[J].Reservoir Evaluation and Development,2019, 9(3):25-31.
[2] 韩青,张金龙,郭红光,等.超临界CO₂在非常规油气藏开采中的应用研究进展[J].现代化工,2018,38(1):49-54.
HAN Qing,ZHANG Jinlong,GUO Hongguang,et al.Application of supercritical carbon dioxide in unconventional oil and gas reservoir[J].Modern Chemical Industry,2018, 38(1):49-54.
[3] 蒲万芬,王崇阳,李一波,等.致密油储层CO₂驱核磁共振实验研究[J].科学技术与工程, 2017,17(7):30-34.
PU Wanfen,WANG Chongyang,LI Yibo,et al.Nuclear magnetic resonance(NMR)experimental study of CO₂ flooding in tight reservoir[J].Science Technology and Engineering,2017,17(7):30-34.
[4] 秦积舜,韩海水,刘晓蕾.美国CO₂驱油技术应用及启示[J].石油勘探与开发,2015,42(2):209-216.
QIN Jishun,HAN Haishui,LIU Xiaolei.Application and enlightenment of carbon dioxide flooding in the United States of America[J].Petroleum Exploration and Development,2015,42(2):209-216.
[5] ZHOU Xiang,YUAN Qingwang,ZHANG Yizhong,et al.Performance evaluation of CO₂ flooding process in tight oil reservoir via experimental and numerical simulation studies[J].Fuel,2019(236):730-746.
[6] 邓瑞健,李中超,田巍,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 Ruijian,LI Zhongchao,TIAN Wei,et al.Microscopic limits of reservoir producing for carbon dioxide flooding[J].Special Oil & Gas Reservoirs,2019,26(3):133-137.
[7] 李宛珊,王健,任振宇,等.低渗透油藏二氧化碳气溶性泡沫控制气窜实验研究[J].特种油气藏, 2019,26(5):136-141.
LI Wanshan,WANG Jian,REN Zhenyu, et al.Gas-channeling control experiment with carbon dioxide gas-soluble foam in low permeability oil reservoir[J].Special Oil & Gas Reservoirs,2019,26(5):136-141.
[8] CAO Meng,GU Yong'an.Oil recovery mechanisms and asphaltene precipitation phenomenon in immiscible and miscible CO₂ flooding processes[J].Fuel, 2013(109):157-166.
[9] ZHANG Na,WEI Mingzhen,BAI Baojun.Statistical and analytical review of worldwide CO₂ immiscible field applications[J].Fuel,2018(220):89-100.
[10] GOGOI S B,KAKOTY M.A study of CO₂ flooding on wave velocities in the Naharkatiya oil reservoir of Upper Assam Basin[J]. Resource-Efficient Technologies,2017,3(1):101-112.
[11] 杨铁军,张英芝,杨正明,等.致密砂岩油藏CO₂驱油提高采收率机理[J].科学技术与工程,2019 ,19(24):113-118.
YANG Tiejun,ZHANG Yingzhi,YANG Zhengming,et al.Mechanism of enhanced oil recovery by CO₂ flooding in tight sandstone reservoirs[J].Science Technology and Engineering,2019,19(24):113-118.
[12] ZHOU Xiang, YAUN Qingwang,RUI Zhenhua,et al. Feasibility study of CO₂ huff and puff process to enhance heavy oil recovery via long core experiments[J].Applied Energy,2019(236):526-539.
[13] 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 Baolun.Water control in the CO₂ foal-flooding gas reservoir with bottom-edge aquifer[J].Special Oil & Gas Reservoirs,2018,25(3):126-129.
[14] 党海龙,肖前华,高瑞民,等.延长油田长₇致密油储层CO₂驱替特征[J].深圳大学学报(理工版). 2019,36(3):298-303.
DANG Hailong,XIAO Qianhua,GAO Ruimin,et al. Characteristics of CO₂ displacement for Chang₇ tight reservoir in Yanchang Oilfield [J].Journal of Shenzhen University(Science & engineering),2019,36(3):298-303.
[15] 朱桂良,刘中春,宋传真,等.缝洞型油藏不同注入气体最小混相压力计算方法[J]. 特种油气藏, 2019,26(2):132-135.
ZHU Guiliang,LIU Zhongchun,SONG Chuanzhen, et al.Minimum miscible pressure calculation method of gases injected in fracture-vug type reservoir[J].Special Oil & Gas Reservoirs,2019,26(2):132-135.
[16] 杨付林,喻鹏.细管实验确定最小混相驱压力技术标准[J].特种油气藏,2019,26(6):118-122.
YANG Fulin,YU Peng.Technical standard of minimum miscible flooding pressure determination with slim tube experiment[J]. Special Oil & Gas Reservoirs,2019,26(6): 118-122.

Experimental Study on Improving Recovery Efficiency of Tight Oil Reservoirs with Supercritical Carbon Dioxide Flooding

PDF (PC)

Knowledge

Abstract

Cite this article

share this article

References

Related Articles 3

Recommended Articles

Metrics

Comments

[1]	Chen Yuxin, Zhao Ting, Cheng Ning, Ma Junxiu, Yang Shengfeng, Li Yunzhe. Research and Application of Vertical Well Network Development for Small-Spacing Horizontal Wells in Tight Conglomerate Reservoirs in Mahu Area [J]. Special Oil & Gas Reservoirs, 2023, 30(2): 122-127.
[2]	Wu Shunwei, Gao Yang, Hu Jun, Hu Haisheng, He Jinyu, Wang Gang. Prediction Method Optimization for S-wave in Mahu Area and Its Influence on Calculation of Rock Mechanics Parameters [J]. Special Oil & Gas Reservoirs, 2021, 28(3): 9-14.
[3]	Yu You, Wei Jianguang, Zhang Baozhong, Li Jiangtao. Study on Well Spacing Limit for Conventional Water Flooding and Carbon Dioxide Flooding in Low-permeability Reservoirs [J]. Special Oil & Gas Reservoirs, 2021, 28(2): 120-125.