Results 11 to 20 of about 73,064 (256)

Study on the Compatibility between Combined Control of Channel Plugging and Foam Flooding and Heterogeneous Reservoirs—Taking Bohai Z Oilfield as an Example

Energies, 2022
With the oilfield developed to a later stage and its heterogeneity gradually becoming more serious, the adaptability of conventional profile control technologies for the reservoir becomes worse and worse.
Yunbao Zhang, Chengzhou Wang, Ming Liu, Zhen Zhou, Jiamei Quan, Xulin Zheng, Zhaohai Zhan   +6 more
doaj   +1 more source

Study on Prevention of Gas Channelling of Acid-resistant Gel Foam in CO2 Flooding of Low Permeability Reservoir [PDF]

E3S Web of Conferences, 2020
With the shortage of recoverable reserves in conventional oil reservoirs, the development of low-permeability oil reservoirs has received more and more attention.
LIU Zhaoxia, GAO Ming, ZHANG Shanyan, LIU Wanlu   +3 more
doaj   +1 more source

Visualized Study on a New Preformed Particle Gels (PPG) + Polymer System to Enhance Oil Recovery by Oil Saturation Monitoring Online Flooding Experiment

Gels, 2023
After tertiary recovery from the oilfields, improving the production of the remaining hydrocarbon is always challenging. To significantly improve oil recovery, a heterogeneous composite flooding system has been developed with preformed particle gels (PPG)
Yanfu Pi, Jinxin Liu, Ruibo Cao, Li Liu, Yingxue Ma, Xinyang Gu, Xianjie Li, Xinyu Fan, Mingjia Zhao   +8 more
doaj   +1 more source

Impact of water content on minimum miscibility pressure during CO2 flooding in high water-cut reservoirs [PDF]

E3S Web of Conferences
This study focused on the X block stratum oil, specifically addressing the application of CO2 displacement technology in enhancing oil recovery under high water content conditions.
Zhao Fajun, Guo Qinyuan, Yang Zian, Zhang Changjiang, Zhang Lei, Wang Tianyu, Xue Peiyong   +6 more
doaj   +1 more source

Study of Displacement Characteristics of Fire Flooding in Different Viscosity Heavy Oil Reservoirs

Geofluids, 2021
A field test in the Xinjiang oilfield in China shows that the viscosity of heavy oil has a certain influence on the combustion dynamics and injection-production performance of fire flooding.
Bingyan Liu, Jinzhong Liang, Fang Zhao, Tong Liu, Zongyao Qi, Fengchao Liu, Pengcheng Liu   +6 more
doaj   +1 more source

Using the Multiple Linear Regression Method for CO2 Flooding Evaluation in the Daqing Oilfield

Frontiers in Energy Research, 2022
CO2 flooding and burial efficiency can be improved by establishing a standard for screening suitable CO2 flooding reservoirs for the Daqing Oilfield.
Zhenhua Wang, Zhenhua Wang, Jirui Hou, Jirui Hou, Hongda Hao, Cheng Wang, Cheng Wang, Likun Wang, Likun Wang   +8 more
doaj   +1 more source

Synthesis of an efficient copolymer of acrylamide and acrylic acid and determination of its swelling behavior

Journal of Petroleum Exploration and Production Technology, 2018
The main purpose of this work is to prepare an efficient series of preformed particle gels (PPGs) and to study their behaviors to control unwanted water in oil fields. To this end, 12 copolymer samples composed of acrylamide and acrylic acid [poly(AAm-co-
Samira Heidari, Feridun Esmaeilzadeh, Dariush Mowla, Sohila Ghasemi   +3 more
doaj   +1 more source

Study on Pulse Characteristic of Produced Crude Composition in CO2 Flooding Pilot Test

Geofluids, 2018
It has been observed in many laboratory tests that the carbon number of the maximum concentration components (CNMCC) of produced oil varies monotonically with CO2 injection volume at the core scale. However, in CO2 flooding pilot test at the field scale,
Pengxiang Diwu, Tongjing Liu, Zhenjiang You, Ganggang Hou, Runwei Qiao, Lekun Zhao   +5 more
doaj   +1 more source

Comparative Analysis of CO2, N2, and Gas Mixture Injection on Asphaltene Deposition Pressure in Reservoir Conditions

Energies, 2018
CO2 and N2 injection is an effective enhanced oil recovery technology in the oilfield especially for low-permeability and extra low-permeability reservoirs. However, these processes can induce an asphaltene deposition during oil production.
Peng Wang, Fenglan Zhao, Jirui Hou, Guoyong Lu, Meng Zhang, Zhixing Wang   +5 more
doaj   +1 more source

Experimental study of flow friction behavior in coiled tubing

Energy Reports, 2022
Coiled tubing (CT) technology has been widely applied in well cleanouts, drilling plug, and shale oil and gas fracturing. Fluid flow in CT produce a more significant flow friction pressure loss because of the long length and small tubing diameter coiled ...
Shihui Sun, Jiahao Liu, Ruili Sang, Kang Zhao   +3 more
doaj   +1 more source