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Ovcharenko A.V.,JV Vietsovpetro | Devadass M.,3M
SPE/IADC Managed Pressure Drilling and Underbalanced Operations Conference and Exhibition 2010 | Year: 2010

This paper demonstrates the benefits of using hollow glass microspheres as a low density additive in fluids formulated for use in workover of wells operating under depleted pressure conditions as found in JV " Vietsovpetro" White Tiger (Bach Ho) Oil Fields, Cuu Long Basin in Vietnam. The paper details the requirements on hollow glass microsphere selection process as a function of bottom hole hydrostatic pressure and fluid density. Assessments on cost of fluids of different densities are also made on the basis of microsphere selection and concentration for the workover program in the White Tiger Oil Field. The paper proposes options to bring fluid costs to more economical levels based on microsphere regeneration. Detailed analysis has been made on all operating JV "Vietsovpetro" wells calculating the required amount of microspheres for workover in accordance with the selected grades. The data reported in this paper can be used for mud design and to provide technical support for well workovers whenever low density fluids (less than 1 g/cm 3) are considered. In addition to mud properties and formulating practices, the paper also provides useful tips in the preparation, handling, and waste management of low density fluids for workover programs. Copyright 2010, SPE/IADC Managed Pressure Drilling and Underbalanced Operations Conference and Exhibition.

Lang L.D.,JV Vietsovpetro | Toan N.M.,JV Vietsovpetro
SOCAR Proceedings | Year: 2012

An overview of the fields, reservoirs characteristics, production regimes, production performances, and current studies on enhanced oil recovery (EOR) for "Bach Ho" and "Rong" fields are given in this paper. In this article, reservoir structures, reservoir conditions, rock characteristics, fluid properties, oil displacement mechanism, current production regime and production performance, the availability of chemical-technique-technology, and the preliminary results of theoretical and experimental studies on some major EOR techniques are analyzed and evaluated in order to select the most promising EOR approaches for "Bach Ho" and "Rong" fields.

Ivanov A.N.,JV Vietsovpetro | Bushkovskiy A.L.,JV Vietsovpetro | Karapetov R.V.,JV Vietsovpetro | Khanh H.Q.,JV Vietsovpetro | Anikeenko G.I.,Morneftegazprojekt ZAO
Neftyanoe Khozyaistvo - Oil Industry | Year: 2010

First experience in activities relating to the abandonment of offshore wells in the oilfields operated and developed by Vietsovpetro JV has shown that abandonment fluids traditionally applied do not meet the Safety and Environment Regulations. This Is because the applied solutions lose their technological properties during long-term abandonment and corrosivity increases due to biological degradation of reagents included in their composition. The paper discusses the development results of a new composition of the abandonment fluid applied downhole while abandonment of the offshore wells.

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