SPE Reservoir Evaluation & Engineering
Volume 13,
Number 1,
February 2010,
pp. 95-104
Summary
A main field and satellite fields consist of several separate reservoirs
with gas cap and/or oil rim. A processing facility on the main field receives
and processes the oil, gas, and water from all the reservoirs. This facility is
typically capable of processing only a limited amount of oil, gas, and water
per unit of time. In order to satisfy these processing limitations, the
production needs to be choked. The available capacity is shared among several
field owners with different commercial interests. In this paper, we focus on
how total oil and gas production from all the fields could be optimized. The
satellite-field owners negotiate processing capacities on the main-field
facility. This introduces additional processing-capacity constraints (booking
constraints) for the owners of the main field. If the total wealth created by
all owners represents the economic interests of the community, it is of
interest to investigate whether the total wealth may be increased by lifting
the booking constraints. If all reservoirs may be produced more optimally by
removing the booking constraints, all owners may benefit from this when
appropriate commercial arrangements are in place. We will compare two
production strategies. The first production strategy optimizes locally, at
distinct time intervals. At given intervals, the production is prioritized so
that the maximum amount of oil is produced. In the second production strategy,
a fixed weight is assigned to each reservoir. The purpose of the weights is to
be able to prioritize some reservoirs before others. The weights are optimized
from a life-cycle perspective. As an illustration, a case study based on real
data is presented. For the examples considered, it is beneficial to lift the
booking constraints because all of the reservoirs combined can be produced more
efficiently when this is done.
© 2010. Society of Petroleum Engineers
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History
- Original manuscript received:
4 October 2008
- Revised manuscript received:
19 March 2009
- Manuscript approved:
20 April 2009
- Published online:
16 February 2010
- Version of record:
24 February 2010