Workflow to model and condition water distribution in a hydrocarbon reservoir
AssigneeSaudi Arabian Oil Company
InventorsAhmed Moustafa Abdel Wahab M. Kassem, Nawaf Abdulrahman A Alghamdi, Badr Saeed Badghaish
Life of this patent
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Abstract
A method includes determining a free water level in the reservoir, analyzing a free water pressure trend of the free water phase, determining a presence of anomalous pressures and salinities within the free water phase, determining whether gas down to models and water up to models fit the reservoir, determining a bi-modal pore throat distribution of the plurality of pores within the reservoir, and generating a difference map to model the water distribution in the reservoir.
Claims20
A method for modeling water distribution in a reservoir having a gas phase, a free water phase, and a plurality of pores, the method comprising:
- determining a free water level in the reservoir;
- analyzing a free water pressure trend of the free water phase;
- determining a presence of anomalous pressures and salinities within the free water phase;
- determining whether gas down to models and water up to models fit the reservoir;
- determining a bi-modal pore throat distribution of the plurality of pores within the reservoir;
- generating a difference map to model the water distribution in the reservoir;
- determining a top pay zone of the reservoir using the difference map, wherein the top pay zone is a portion of the reservoir where the gas phase is located;
- and
- drilling a well into the top pay zone of the reservoir to produce gas using the well.
A non-transitory computer readable medium storing instructions for modeling water distribution in a reservoir having a gas phase, a free water phase, and a plurality of pores executable by a computer processor, the instructions comprising functionality for:
- determining a free water level in the reservoir;
- analyzing a free water pressure trend of the free water phase;
- determining a presence of anomalous pressures and salinities within the free water phase;
- determining whether gas down to models and water up to models fit the reservoir;
- determining a bi-modal pore throat distribution of the plurality of pores within the reservoir;
- generating a difference map to model the water distribution in the reservoir.
Dependencies are inferred from the claim text.