Sanding can have a significant impact on drawdown pressures and consequently on hydrocarbon production rate. Furthermore, sanding can create safety issues due to the erosion of facilities. Sand affects the ability of the separator to handle oil/gas/water and may require shut down of production in order to clean out the separator. Insufficient lift may result in the well becoming plugged with sand and the ceasing of production.

Ikon Science can evaluate the risk of sand failure (critical safe drawdown and/or critical bottomhole flowing pressure versus reservoir pressure) and thus, the potential for sand production over the well life cycle (from initial to abandonment conditions) for existing wells and new development wells using either a simple 3D analytical model or a 3D numerical model.

By constructing a sand evaluation log (critical drawdown pressure versus depth) for the main producing intervals at initial, current and fully depleted reservoir conditions, Ikon Science can help optimise completion strategies including optimal perforation orientation to maximise production.

Our team provides recommendations on potential sand control measures (e.g. open-hole, cased and perforated, selective perforating, oriented perforating and maximum drawdown limits) for new wells to minimise the risk and maximise production.

Plot of bottom-hole flowing pressure versus reservoir pressure displaying the failure lines based on the perforation angle for a fixed rock strength (top) and failure lines for different rock strength for a fixed perforation angle (bottom)