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Links to the final article published on the website of the Journal are encouraged.</p> (Petrovietnam Journal) (Petrovietnam Journal) Wed, 25 May 2022 00:00:00 +0000 OJS 60 Integration of improved capacitance resistance and Gentil fractional flow equation in production forecasting: Problems and solutions <p>For fields with water injection, attention should be paid to elements that forecast oil/gas/water production and well/reservoir/field pressure, especially the inter-well connectivity in order to make appropriate decisions in operation and production optimisation. Beside the specialised tools currently being utilised (such as numerical simulation models and decline curve analysis), the authors propose integrating improved capacitive resistance and Gentil fractional flow equations (ICRMIP-G) to evaluate the interaction of injection wells with production wells and that of the bottom/marginal aquifer with the production wells, thereby forecasting the total oil production for the research subject. The ICRMIP-G model applied to forecast cumulative oil production in 21 months for the Lower Miocene formation of the Cuu Long basin with low relative error (&lt; 8%) has proven its feasibility when giving high reliable results.</p> Dang Tu Tran, Xuan Quy Tran, Duc Huy Dinh, Truong Giang Pham, The Hung Le Copyright (c) Tue, 24 May 2022 00:00:00 +0000 Solutions to improve the performance of production wells through coreflooding experiments using multi-purpose coreflooding system <p>The study and evaluation of reservoir conditions to find solutions to maintain production are top priority of oil and gas companies. The conducting of coreflooding tests in the laboratory before industrial scale application on field requires synchronised and precise equipment system which can give highly reliable results. The CF700 multi-purpose coreflooding system developed by the Vietnam Petroleum Institute (VPI) has been used to conduct 3 main types of coreflooding test to improve the performance of production wells in 3 fields with different flow degradation problems: EN chemical water shutoff injection to reduce the water oil ratio (WOR) in production; evaluating the effect of acid on scale treatment in the reservoir; and chemical injection to reduce condensate saturation and restore gas permeability in the near well bore for the gas condensate field.</p> Van Hieu Nguyen, Hong Minh Nguyen, Ngoc Quoc Phan, Lam Quoc Cuong Nguyen Copyright (c) Tue, 24 May 2022 00:00:00 +0000 Research on production of epoxy/graphene composite coating against metal corrosion <p>Three different types of graphene have been incorporated in epoxy to form a protective composite coating against corrosion on the carbon steel substrate. Among which, the organically modified graphene is more compatible and better dispersive into the solvent and creates a homogenous composite coating with a good adherence on metal surfaces. The results of the corrosion test conducted by the Vietnam Petroleum Institute (VPI) show that this composite coating with graphene can protect metal better than the epoxy coating without graphene.</p> Thi Le Hien Nguyen, Thi Huong Pham, Thi Hong Giang Le, Dinh Dung Nguyen Copyright (c) Tue, 24 May 2022 00:00:00 +0000 Factors affecting production and business activities of Vietnam Oil and Gas Group in 2022 <p>The International Monetary Fund (IMF) has reduced its forecast for global growth from an estimated 6.1% (2021) to 3.6% in 2022 and 2023 [1]. In particular, the World Bank forecasts that the conflict between Russia and Ukraine will cause energy and non-energy prices (food and metals) in 2022 to increase by 50.5% and 19.2%, respectively [2].On the basis of examining Vietnam’s and the world’s economic and political situation, the article analyses the factors that impact the production and business activities of the Vietnam Oil and Gas Group (Petrovietnam). These factors have both positive and negative impacts, posing both opportunities and challenges for Petrovietnam in the implementation of its annual tasks and objectives, its 5-year plan for 2021­2025, and its development strategy until 2030, and vision to 2045.</p> Huong Chi Nguyen, Thi Thuy Tien Nguyen, Thanh Tung Dang, Anh Duc Nguyen, Trung Khuong Nguyen Copyright (c) Tue, 24 May 2022 00:00:00 +0000