Definition - What does Sand Production mean?
Sand Production is the migration of the formation sand induced by the flow of reservoir fluids. It is initiated when the rocks around the perforations fail and the fluids thrust the loose grains into the borehole. It takes place when the reservoir fluid flow outpaces an assertive threshold which depends on factors like stress state, reservoir rock consistency and the way of completion which is used around the well.
The sand particles are first disintegrated from their parent rock before flowing with the reservoir fluids into the borehole. This can take place when the reservoir rocks have low formation strength and they fail under the conditions of in-situ and the imposed stress gets changed because of the hydrocarbon production.
Petropedia explains Sand Production
Sand Production is the initiative of various problems related to the oil and gas industry that adversely affect the completion process. The problems caused by Sand Production include:
- Failure of the sand control completions.
- Plugging of the perforations.
- Borehole instability.
- Environmental effects.
- Increase in the cost of cleanup and remedial operations.
Completion engineers are required to know the conditions at which the well can produce sand. In exploratory wells, the completion engineers use sand flow test to assess the Sand Production. The engineers must have a detailed knowledge of in-situ, mechanical strength of the formation and the ways in which rocks can fail so that they can predict the Sand Production. After establishing that at the planned production rates the sand is expected to be produced and the engineers choose a strategy to restrict the Sand Production.