scholarly journals Production technology solutions to enhance heavy oil recovery of marginal fields, offshore Vietnam

2020 ◽  
Vol 10 ◽  
pp. 41-48
Author(s):  
Tran Quoc Viet ◽  
Vu Viet Hung ◽  
Nguyen Hai An
Keyword(s):  
Production Technology ◽  
Oil Recovery ◽  
Heavy Oil ◽  
Oil Field ◽  
Production Performance ◽  
Combination Method ◽  
Heavy Oil Recovery ◽  
Pump System ◽  
Technology Application ◽  
Gas Lift

The finding of heavy oil at Dong Do field of Cuu Long basin is a success in exploration. It could be considered as a large heavy oil field offshore Vietnam. Maximising reserve is a challenge to the operator when they think of a suitable development strategy to efficiently and economically exploit the field. Over the past decades, production technology application in heavy oil production has been widely developed in the industry. Apart from the thermal method, pumping technology makes remarkable advances by enlarging the drawdown created over the conventional gas lift in several heavy oil projects. This paper presents all the production technology solutions that apply to the marginal heavy oil field offshore Vietnam. One of the major solutions is the electric submersible pump (ESP) and gas-lift (GL) combination method to enhance the wellbore lifting efficiency. In doing so, a series of solutions to improve heavy oil recovery have been conducted from design to pilot test whilst optimising the economic yield over the field life. Among them, the application of ESP and GL combination plays as the key driver to reinforce good production performance. As a result, the design includes an electrical pump system coupled with GL back-up, all integrated with one to boost production and prolong well life. Beside that, closely monitoring and optimising is one factor to give the pump a longer life.

scholarly journals Production technology designed for heavy oil recovery of a marginal field offshore Vietnam

2016 ◽  
Vol 19 (1) ◽  
pp. 190-202
Author(s):  
Hung Viet Vu ◽  
Son Thai Tran
Keyword(s):  
Production Technology ◽  
Oil Recovery ◽  
Heavy Oil ◽  
Oil Field ◽  
Thermal Method ◽  
Well Performance ◽  
Technology Application ◽  
Field Development ◽  
Sand Control ◽  
Gas Lift

Production technology application in heavy oil production has been widely developed in industry over past decades in an effort to improve the ultimate recovery of this “difficult” hydrocarbon. Apart from thermal method, pumping technology makes remarkable advance by enlarging the draw-down created over the conventional gas-lift in several heavy oil projects. This paper presents the production technology design set out in the Field Development Plan (FDP) to enhance the wellbore lifting efficiency of a marginal heavy oil field offshore Vietnam. The finding of 200API viscous oil in Cuu Long Basin is weird to the geologist and its considerable large reserve challenges operator in thinking of a suitable development strategy to efficiently and economically extract this reserve. In so doing,a series of systematic technical studies has been purposely planned from the first encounter of heavy oil in wildcat well to the modelling study and asset design to accommodate the viscous fluid whilst optimizing the economic yield over the field life. Among them, the application of Electric Submersible Pump (ESP) was finally decided as the key driver to reinforce the well performance. As a result, the facility design at the surface such as surface electrical system coupledwith gas-lift back-up, sand control, chemical injection and so on, all integrated in one to boost production and prolong well life.

Heavy-Oil Recovery by Combined Hot Water and Alkali/Cosolvent/Polymer Flooding

SPE Journal ◽  
2016 ◽  
Vol 21 (01) ◽  
pp. 74-86 ◽  
Author(s):  
M.. Tagavifar ◽  
R.. Fortenberry ◽  
E.. de Rouffignac ◽  
K.. Sepehrnoori ◽  
G. A. Pope
Keyword(s):  
Oil Recovery ◽  
Heavy Oil ◽  
Oil Field ◽  
Hot Water ◽  
Mobility Control ◽  
Heavy Oil Recovery ◽  
Oil Viscosity ◽  
Polymer Flood ◽  
Low Interfacial Tension ◽  
Combined Strategy

Summary A hybrid process is developed and optimized for heavy-oil recovery that combines moderate reservoir heating and chemical enhanced oil recovery in the form of alkali/cosolvent/polymer flood. The process is simulated by use of a model derived from existing laboratory and pilot data of a 5,000-cp heavy-oil field. It is found that hot waterflooding is efficient in heating the reservoir only when high early injectivity is achievable. This may not be the case if incipient fluid injectivity is low and/or long, continuous, horizontal shale baffles are present. To remedy the former, an electrical-preheating period is devised, whereas switching to a horizontal flood could overcome the latter. Once the reservoir temperature is raised sufficiently, a moderately unstable alkali/cosolvent/polymer flood is capable of mobilizing and displacing oil. A best combined strategy for efficient reservoir heating, high oil recovery, and cost effectiveness is found to involve reducing the oil viscosity to values of approximately 300–500 cp and combining a degree of mobility control and low interfacial tension as recovery mechanisms.

scholarly journals Optimizing the development strategy of combined steam flooding & cyclic steam stimulation for enhanced heavy oil recovery through reservoir proxy modeling

2021 ◽  
Author(s):  
Boni Swadesi ◽  
Suranto Ahmad Muraji ◽  
Aditya Kurniawan ◽  
Indah Widiyaningsih ◽  
Ratna Widyaningsih ◽  
...  
Keyword(s):  
Objective Function ◽  
Oil Recovery ◽  
Heavy Oil ◽  
Model Development ◽  
Thermal Recovery ◽  
Oil Field ◽  
Heavy Oil Recovery ◽  
Proxy Model ◽  
Steam Flooding ◽  
Scenario Optimization

AbstractThermal injection methods are usually used for high viscosity oil. The results of previous studies showed that the combination of SF and SFF had the highest increase in oil recovery but still requires further study to determine the optimum strategy. This work is purposed to optimize the development scenario of a combined CSS-SF applied to a heavy oil field located in Sumatera, Indonesia. The recovery factor and NPV become the objective function, and several given and controlled parameters sensitivity toward the objective function are studied. A proxy model based on quadratic multivariate regression is developed to evaluate and get the desired objective function. The reservoir simulation of the thermal recovery process is done using CMG-STARS simulator. The overall workflow of scenario optimization is conducted using CMOST™ module. Optimum development scenario is obtained through maximization of the objective function. This work shows that the combination of proxy model development and optimization results in the best scenario of combined CSS-SF for heavy oil recovery.

Production performance analysis of heavy oil recovery by cyclic superheated steam stimulation

Energy ◽  
2017 ◽  
Vol 121 ◽  
pp. 356-371 ◽  
Author(s):  
Fengrui Sun ◽  
Chunlan Li ◽  
Linsong Cheng ◽  
Shijun Huang ◽  
Ming Zou ◽  
...  
Keyword(s):  
Performance Analysis ◽  
Oil Recovery ◽  
Heavy Oil ◽  
Superheated Steam ◽  
Production Performance ◽  
Heavy Oil Recovery ◽  
Steam Stimulation

Enhanced heavy oil recovery and CO2 storage in a reservoir with high-water-cut: laboratory to field

2021 ◽  
Author(s):  
Xiang Zhou ◽  
Yongsheng Tan ◽  
Qi Jiang
Keyword(s):  
Oil Recovery ◽  
Heavy Oil ◽  
Co2 Storage ◽  
High Water ◽  
Production Performance ◽  
Water Flooding ◽  
Heavy Oil Recovery ◽  
Co2 Flooding ◽  
High Water Cut ◽  
Water Cut

<p>In this study, in order to enhance heavy oil recovery in the heavy oil reservoir with a high-water-cut after water flooding process, experimental and numerical simulation studies are conducted. In the experimental studies, firstly, the properties of the heavy oil-CO2 system were measured under different saturation pressures at the reservoir temperature. Secondly, to mimic the high-water-cut condition in the real reservoir, water flooding process was conducted for each core; then four long core experiments insist of one CO2 huff `n` puff process and three CO2 flooding processes were implemented. The CO2 huff `n` puff process is conducted to compare the production performance with that in the CO2 flooding process to optimize the method. Regarding the CO2 flooding process, different gas (pure CO2, flue gas) and different production categories (constant production pressure, pressure depletion) were applied to study the heavy oil production performance in the heavy oil reservoir with high-water-cut. The experimental results indicate that, the CO2 flooding coupling with pressure depletion process is the best choice to reduce the water-cut and enhance the heavy oil recovery, which is 41.84% of the original oil in place and the water-cut reduced to lower than 70%. In the numerical simulation studies, the WinProp module in CMG is applied to simulate the properties of the heavy oil-CO2 system, which is generated by recombining CO2 into heavy oil, and high agreement simulation results were obtained. Then the results of the optimized experiment were history matched using GEM module. Finally, the upscaling studied was conducted. The CO2 flooding processes are carried out in the studied reservoir to maximum the heavy oil recovery factor. Moreover, the CO2 storage ratio is studied using GEM model.</p>

scholarly journals Improving heavy oil recovery, part (I): synthesis and surface activity evaluation of some novel organometallic surfactants based on salen–M complexes

RSC Advances ◽  
2021 ◽  
Vol 11 (3) ◽  
pp. 1750-1761
Author(s):  
M. M. Abdelhamid ◽  
S. A. Rizk ◽  
M. A. Betiha ◽  
S. M. Desouky ◽  
A. M. Alsabagh
Keyword(s):  
Surface Activity ◽  
Oil Recovery ◽  
Heavy Oil ◽  
Heavy Oil Recovery ◽  
Activity Evaluation ◽  
New Family

This study focuses on preparing a new family of organometallic surfactants based on five ion complexes, namely Co2+, Ni2+, Cu2+, Fe3+, and Mn2+.

Fabrication of a pH-responsive emulsifier for heavy oil recovery based on dynamic imine bond

2021 ◽  
Vol 332 ◽  
pp. 115916
Author(s):  
Tongyu Zhu ◽  
Wanli Kang ◽  
Hongbin Yang ◽  
Zhe Li ◽  
Tongyu Wang ◽  
...  
Keyword(s):  
Oil Recovery ◽  
Heavy Oil ◽  
Heavy Oil Recovery ◽  
Ph Responsive ◽  
Imine Bond
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