Processing

Assessment of oil and gas potential on the sea and continental shelf of Vietnam [06/10/2014]

On 15th September 2014, the State Steering Committee for basic investigation of marine environment - resources established the State Council for Acceptance of implementation results of the project to “Assess the oil and gas potential on the sea and continental shelf of Vietnam”. The project is executed by Vietnam Petroleum Institute with valuable contributions to petroleum geoscience. For the first time, the boundary between the Cenozoic sedimentary basins is determined on the basis of handling and interpreting a large volume of documents, geological – geophysical survey data, with all the scientific arguments and reliability necessary to guide the oil and gas exploration, contribute to asserting and defending national sovereignty.
 

Dr. Nguyen Quoc Thap – PetroVietnam Vice President reported to Deputy Prime Minister Hoang Trung Hai

on major achievements of the Project to "Assess the oil and gas potential on the sea and continental shelf of Vietnam"

 

The project to “Assess the oil and gas potential on the sea and continental shelf of Vietnam” executed Vietnam Petroleum Institute is under the “Overall plan for basic investigation and management of marine environment - resources by 2010, vision to 2020” approved by the Prime Minister on 1st March 2006 according to the Decision No. 47/2006/QĐ – TTg. On that basis, Vietnam Petroleum Institute has made 7 sub-topics “Assessment of oil & gas potential and reserves” of eight sedimentary basins (Song Hong, Phu Khanh, Cuu Long, Nam Con Son, Malay - Tho Chu - Phu Quoc Truong Sa - Tu Chinh - Vung May) and general topic “Overall assessment of oil and gas potential of the entire continental shelf and orientation for oil and gas exploration and production”.

 

For the first time, the boundary between the Cenozoic sedimentary basins is determined on the basis of handling and interpreting a large volume of documents, geological – geophysical survey data, with all the scientific arguments and reliability necessary to guide the exploration of oil and gas resources particularly and minerals generally.

 

Some basic issues of the East Sea tectonics such as faulting activity of the major river systems: Lo River, Vinh Ninh, Chay River, Red River, Rao Nay, Tay Tri Ton, Tam Ky - Phuoc Son, Cu Lao Xanh, East Vietnam Slope, Tuy Hoa Shear Zone, Black Lion – Phu Quy, White Tiger - Rang Dong, Mae Ping - Hau River, Dong Nai River, Hong - Mang Cau, Da Chu Thap – Da Tay, Vung May, West Reef, Ba Chua - Kim Long; forming mechanisms and geological history of tectonic units in pre-rift, rift and post-rift stages; magmatic eruption in different periods; as well as sedimentary conditions and environment have been elucidated, compared and contrasted, linked among regions generally, unanimously and systematically.

 

The geological structure of sedimentary basins, zones, regions, composition and trap are made precise with new data and application of modern technology and software, ensuring adequate reliability for research on zoning and assessment of oil and gas potential. The structure units of grade I and II in the sedimentary basins have been established and standardized.

 

In the project, one set of maps scaled 1:1,000,000 has been made for entire continental shelf and waters of Vietnam, including: 5 structure maps, 4 isopach maps, 2 source rock and maturity maps, 1 tectonic zoning map, 1 map for structures and potential, 4 maps for structures collection, 1 map for oil and gas prospect zoning. These are the first maps built comprehensively, adequately and rather completely on the basis of combining equivalent maps in greater scale (1: 200,000 - 1:500,000) of sedimentary basins, meeting requirement of planning and management of marine environment and resources in the coming years and in the long term.

 

The results of analyzing, evaluating petroleum system: source rock, containing rock, cap rock, traps and hydrocarbon migration time of each zone, region, area and sedimentary basin are as bases to determine the range and classification of prospects including pre-Cenozoic fractured basement, Oligocene sandstones, Miocene sandstones, Miocene carbonate, as well as to establish the areas of high potential (areas prone to oil potentials, areas prone to gas potentials), areas of average potentials, low potentials and areas with unclear potentials.

 

The research results are bases for Vietnam Petroleum Institute’s proposal of specific orientation for the oil and gas exploration in the future, with priority given to the areas of much oil and gas potential in sedimentary basins on the sea and continental shelf of Vietnam. For sedimentary basins/ new regions where exploration activities are carried out but no field/ object is put into oil and gas production, it is necessary to concentrate on research, additional 2D and 3D seismic explosion, select potential objects for exploration drilling, in order to increase the reserves of all levels. For traditional basins/ areas, it is necessary to promote research of potential accuracy, additional exploration drilling and appraisal of specific areas/ objects, in order to increase the proved reserves and production.

 

For scientific and technological research, it is necessary to promote basic research and investigation; exploitation and application of modern methods and technologies to study the fractured structure and trap distribution size and revaluate oil and gas reserves of the bed rock of Cuu Long, Nam Con Son and Northeastern Red River basins; carry out quantitative analysis and evaluation of oil and gas prospects of non-structural and mixed traps in Cuu Long, Malay - Tho Chu basins, selection of drilling well location; study and evaluate gas accumulation in the upper Miocene, Pliocene, Pleistocene sediments in Red River, Phu Khanh basins; concurrently study and revaluate the oil and gas potential in Miocene age carbonate trap in the Southern of Red River and Nam Con Son basins; study and revaluate non-traditional traps (fractured tight clay, gas-containing coal layer, gashydrate accumulation...); study the rule of distribution and CO2 concentration in the oil and gas fields, mining technological solutions.

 

According to Dr. Phan Ngoc Trung – Director of Vietnam Petroleum Institute, Project Manager, in the project, the oil and gas potential is assessed under 4 levels: sedimentary basins, petroleum system, play, and prospects. The research results of the project clarify the oil and gas formation, accumulation and distribution, build complete, adequate and reliable scientific database of oil and gas potential and reserves on the sea and continental shelf of Vietnam. The project has provided data for policy-making and built strategy for oil and gas exploration and production, appropriate solutions to management and exploitation of the State’s marine resources and environment scientifically and effectively; contributed to asserting and protecting national sovereignty and national security. This is also an opportunity for the oil and gas industry of Vietnam to develop and apply modern technologies, train high quality management/research staff in the field of marine mineral exploration and management.The project to “Assess the oil and gas potential on the sea and continental shelf of Vietnam” has built thousands of diagrams, maps, charts, sections, figure... to show detailed geological structure, oil and gas potential of 8 sedimentary basins and entire continental shelf of Vietnam. In particular, the project has built the map of tectonic elements for each sedimentary basin; map of magnetic anomalies, gravity anomalies for the study areas; structural map for (isochrones/depth), thickness of the layers/objects with petroleum potential; ancient map of facies and sedimentary environments; map of source rock, maturity and petroleum displacement; map of the fields, prospects and oil and gas plays; map of prospect zoning/ assessment of risk for layers/objects containing oil and gas ...

PVN

PETECO VIET NAM EQUIPMENT JOINT STOCK COMPANY
Block TT2, Row A, No 10, Bac Linh Dam, Dai Kim Ward, Hoang Mai District, Hanoi, Vietnam
Tel: + 84-243 974 7541  - Fax: + 84-243 974 7546
Email: nam.hv@peteco.com.vn - Website: www.peteco.com.vn