Where to Remove Sand from Oil & Gas Facilities
Commensurate with knowing what problems sand causes – erosion, filling, interference, or increased OIW content – is then knowing where to remove the sand. A primary directive is to solve the right problem. If replacement of choke beans is a hindrance to sustained production, then remove the sand at the wellhead. However, if protecting the disposal reservoir from increasing injection pressure, then sand should be removed from the produced water stream.
Sand is removed from facility flow in one of four nodes as shown in the header graphic. The WSF is used in Node 1- at the wellhead.
Node 1: Wellhead
- Multiphase flow at high pressure
- Sand removed prior to choke using multiphase desander or dual-pot sand filter
- Separation is easy due to low multiphase viscosity and sand easy to handle because of less complication from process chemicals
- Removal of sand here protects choke, manifold piping, production separator, and produced water equipment and disposal
References:
- Rawlins, C.H., “Sand Management Methodologies for Sustained Facilities Operations”, Oil & Gas Facilities, Vol. 2, No. 5, October 2013, pp. 27-34. https://doi.org/10.2118/1013-0027-OGF
Next week I will cover purpose and definition of the WSF and comparison to multiphase desander technology.