IRIS: A NEW ERA IN DOWNHOLE DATA TREATMENT

When optimizing a reciprocating rod lift installation, key control parameters must be extracted from the downhole data. Traditionally, downhole data in the form of position and load data is derived from surface data using the wave equation. Downhole position and load data must be carefully analyzed to extract key control parameters for reciprocating rod lift optimization.
IRIS introduces a new and innovative approach for downhole data analysis.

Through a change in coordinate system, IRIS transforms downhole position and load data into polar coordinates. This change in coordinates creates three new data sets, which greatly simplify the extraction of the above mentioned key control parameters.
Additionally, IRIS can be used to manage both viscous and mechanical friction through an extra friction detection algorithm and a viscous damping estimator.

In this paper, the IRIS algorithms and results are presented.