Petrovietnam Journal http://tapchidaukhi.vn/index.php/TCDK An official scientific journal of the Vietnam National Oil and Gas Group en-US Petrovietnam Journal 2615-9902 <p>1. The Author assigns all copyright in and to the article (the Work) to the Petrovietnam Journal, including the right to publish, republish, transmit, sell and distribute the Work in whole or in part in electronic and print editions of the Journal, in all media of expression now known or later developed.</p> <p>2. By this assignment of copyright to the Petrovietnam Journal, reproduction, posting, transmission, distribution or other use of the Work in whole or in part in any medium by the Author requires a full citation to the Journal, suitable in form and content as follows: title of article, authors’ names, journal title, volume, issue, year, copyright owner as specified in the Journal, DOI number. Links to the final article published on the website of the Journal are encouraged.</p> Pre-drill pore pressure prediction using seismic interval velocity and wireline log: Case studies for some wells in Cuu Long and Song Hong basins http://tapchidaukhi.vn/index.php/TCDK/article/view/868 <p>Pore pressure can be obtained from seismic interval velocity by the velocity to pore pressure transform technique. In this paper, the authors present the Eaton experimental method to calculate pore pressure for some wellbores in the Cuu Long and Song Hong basins, where complex processes of subsidence, burial, geological transformation, and geothermal activity took place, causing abnormal pressure zones.<br>The obtained results show that the pore pressures calculated from the seismic interval velocity data are closely correlated with the values measured by well logging methods and the density of the drilling fluids. Therefore, using seismic interval velocities to calculate pore pressure values, identify and predict abnormal zones by the Eaton method can be effectively applied in frontier areas to improve safety, reduce risks while drilling.</p> Van Hoang Nguyen Quy Ngoc Pham Minh Quy Nguyen Huy Hien Doan Copyright (c) 2022-09-14 2022-09-14 8 05 12 10.47800/PVJ.2022.08-01 Study on the preparation of PVChem MgO expansive additive and a recipe of cement slurry to prevent gas migration and channelling http://tapchidaukhi.vn/index.php/TCDK/article/view/869 <p>During the process of cementing, MgO-based expansive additives are widely used to increase bond and adhesion of the cement stone annulus with the wellbore and casing. Under the high-temperature condition of the bottom hole area, the additives help prevent gas channelling and migration in the well.<br>The paper presents the results of a study on the preparation of the PVChem MgO expansion additive based on the magnesite ore from Kong Queng mine (Gia Lai province). The analyses of density, water separation, water discharge, rheological properties, thickening time and strength of cement stone then showed that adding 0.75% PVChem MgO expansion additive into the cement slurry mixture prevents gas ingress and migration effectively.&nbsp;&nbsp;</p> Anh Trung Kieu Van Duc Vu Van Cong Le Thanh Trung Do Copyright (c) 2022-09-14 2022-09-14 8 13 21 10.47800/PVJ.2022.08-02 An economic model to manage the production of Petrovietnam’s oil and gas projects http://tapchidaukhi.vn/index.php/TCDK/article/view/870 <p>Managing Petrovietnam's oil and gas production projects both domestically and abroad requires efficient tools to support timely decision-making in an accurate response to market volatility and other risk factors.<br>The article introduces an economic model built and developed in accordance with the characteristics of Petrovietnam’s oil and gas projects, which is a tool to help management agencies and oil and gas enterprises improve the efficiency of portfolio management against fluctuation of input factors.&nbsp;&nbsp;</p> Van Thuan Doan Thu Trang Pham Duy Dat Hua Copyright (c) 2022-09-14 2022-09-14 8 22 27 10.47800/PVJ.2022.08-03 Analysing the spatial distribution of land surface temperature at Nghi Son Refinery and Petrochemical Complex using Landsat and Sentinel 2 satellite image data http://tapchidaukhi.vn/index.php/TCDK/article/view/871 <p>The Landsat 5, Landsat 8 and Sentinel 2A satellite image data are used for extracting land surface temperature, thereby mapping the spatial distribution of land surface temperature at Nghi Son Refinery and Petrochemical Complex. The obtained results then can be used in monitoring land surface temperature changes, for land use planning as well as in minimising the impact of production processes to the environment.&nbsp;&nbsp;</p> Le Hung Trinh Copyright (c) 2022-09-14 2022-09-14 8 28 34 10.47800/PVJ.2022.08-04