Vietnam oil and gas reserves

Presented by: Bui Duc Quang

Drilling and production petroleum

batch 53

Main contents

1. A fews Definitions

2. Viet nam oil and gas reserves.

3. Basement rock – extremly special

reservoir.

4. Conclusion.

1. Definitions

A. Petroleum

Petroleum is a mixture of a very large number of different hydrocacbon, the most commonly found molecules are

alkanes (linear or branched), cycloalkanes, aromatic hydrocarbons, or

more complicated chemicals like

asphaltenes.

B. Oil equipvalent

• 1 A merican barrel = 0.15899 cubic meter.

• 1000 tons of natural gas = 1 ton oil

equivelent.

• 1 ton crude oil = 1 ton oil equivalent.

C. Oil recovery factor equations formulas

calculator

• Estimate of recoverable oil (ERO)

• Estimate of in place oil (EIPO)

E. Reserves

2. Vietnam oil and gas reserves

2.

• Basins

of

Vietnam

A. Song Hong basin

• Reserves and

recoverable

resources in the

basin are

estimated about

1,100 MMscmoe

.• Proven gas

reserve is about

250Bscm

(excluded CO2)

• Tien Hai C gas field in Hanoi trough is in

producing, and D14, DongQuan D fields,

long term tests have been carring out in

order to evaluate commercial capability of

these fields.

B. Cuu Long basin

• Reserves and recoverable resources in

Cuu Long Basin are estimated about 820

MMscm tons oil equivalent.

•. Discovered reserves from basement,

Oligocene and Miocene sandstones

reservoirs are approximately 500MMscm

oil equivalent.

• Undiscovered resources is approximately

320 MMscm oil equivalent.

C. Phu khanh basin

• A undrilled basin,

petroleum systems may

be similar to nearby Song

Hong Basin (north) and

CuuLong/Nam Con Son

basins (south)

• The recoverable

resources of this basin is

approximately 400

MMscm of oil equivalent,

about 8% of total Vietnam

resources.

D. Nam Con Son basin

• Oil & gas reserves and recoverable

resources in Nam Con Son Basin are

estimated about 970 MMscm oil

equivalent.

• Discovered reserve is about 250MMscm

oil equivalent, mainly gas.

• Undiscovered resources are

approximately 720 MMscm oilequivalent

E. Tu Chinh Vung May basin

• Total recoverable

resources of the basin

is about 950 MMscm

oil equivalent.

• Due to the lack of

data, this basin need

to be explored to

clarify its petroleum

potentials...

G. Ma Lay - Tho Chu Basin

Malay – Tho Chu Basin map

• Oil & gas reserve and recoverable resources in the Malay – Tho chu basin (the Vietnam part) are estimated about 370 MMscm oil equivalent, mainly in Miocene sandstones (89%).

• Discovered reserve is about 210 MMscm oil equivalent.

• Undiscovered resources is about 160

MMscm oil equivalent.

Summary of total resources in Vietnam

Tertiary basins(up to 12/2005)

• Total Vietnam resources are evaluated

approximately 4,600MMscm oil equivalent ( 3,91billion tons) (gas 55-60%)

• Reserves 1,210 MMscm oil equivalent (650 BCM gas, 560 MCM oil)

.• More than 70 discoveries. In the period 2001-2004: 15 discoveries; incremental reserves 226 MCM (~192 Million tons)oe. 2005: 4 new discoveries.

Vietnam oil reserves good for 30

years

• (Reuters) - Vietnam's current level of

recoverable reserves of crude oil and gas are

enough for another three decades of production.

• "Counting the reserves we have discovered so

far, production can last another 30 years,"

Thang said in the interview, adding

Petrovietnam was expanding exploration to

boost reserves.

HANOI | Sun Jan 24, 2010 9:39pm EST

3. Basement – extremly special

reservoir

• Bach Ho (White Tiger) field is a giant oil

field with recoverable reserves is 01.0-1.4

mmm bbls ( 136 – 190 million tons ).

about 90% of oil was producted from the

basement reservoir, the remaining comes

from Oligocene and Miocene clastics.

• The first oil from basement rock was

producted by Vietsopetro at White Tiger

field..

• No company though that the oil exists in

basement rock.

Main features of basement

reservoir in White Tiger field

• No existing lower zone ( water )

• Fractured- basement reservoir.

Two-dimensional model of the play concept for the

Cuu Long basin

Why has vietsopetro drilled to

basement rock?

• Lost circulation.

• There is very thick cap rock upper the

basement rock.

“You should never use water injection

method to preserve reservoir pressure”

said experts of World Bank

• 4. Conclusion

• Tertiary basins of Vietnam have similar

geological and petroleum features; four of

them have encountered and produced oil

and gas.

• Improvement of oil recovery for producing

fields

• Effective development of marginal fields

• Exploration in deepwater and frontier

areas

References

• Vietnam insitute of drilling technology.

• Petrotimes.

• Pvep.com.vn

Thank you for you attention