In-field Referencing (IFR) and Interpolated In-field Referencing (IIFR)
To be professional at work and give the best service to the oil companies we should be able to provide them the right info. It is very unprofessional if we are running a particular service to our customers, but our field hands don’t know what exactly are the concept of the service. In my opinion, as much as companies are focusing on the paperwork they have to give more value to educating their team. When you teach your team, they all can help with improving the sales. We can't say that time has changed in our industry and do nothing about it. We have to start doing something different, and one of them is training our field hands and feed them with the right knowledge and if we do that, we can help our sales people to sell more and Sales is the key to success in this market.
In-field Referencing (IFR)
A generic term describing the technique used to reduce the uncertainty of magnetic survey tool measurements by applying secular and local (crustal field) geomagnetic field parameters and the baseline for the survey calculations.
- Improved reliability of onsite QC of survey data
- Improved accuracy of correction algorithms for drill string magnetic interference
For the IFR application, we’ve got the rig actually within our map area in the fairly hot environment there. For this field, we’ve got the accurate information for declination, dip, and total field. In the survey management situation, that is transmitted to the survey database, which can be anywhere. And of course, we’ve got the data, from the rig, which is equally transmitted to the survey management people.
The survey management system picks up the data from the survey database and then transmits the corrected data back to the rig site.
Interpolated In-field Referencing (IIFR)
Interpolated In-field Referencing is slightly more complicated. Interpolated in-field referencing, or IIFR, is a planted technique that used to reduce the uncertainty of magnetic survey data by applying:
- Global/Secular variations
- Local geomagnetic field parameters (crustal offsets)
- Real-time disturbance variations (diurnal and dynamic)
As the baseline for the survey calculations
Interpolated In-field Referencing (IIFR)
- Short-term volatility in the diurnal field component can be highly significant if surveying:
- At higher latitudes
- At higher inclinations, particularly when drilling towards east or west
- Through critical steering sections
- Storm activity during drilling and helps us if we’ve got magnetic mud.
So IIFR enables the validation of single sets of magnetic survey measurements. Gyro surveys are no longer required to confirm/ replace magnetic surveys, and surveys are self-validating accurate magnetic field observations.
For the IIFR application, we again have the rig site in the location on the map. This time round, we’ve got real-time observatory data. So that data now represents the crustal information and the F model. And also, of course, the observatory information. The rig sends the survey data to the survey management operation, who in turn draw the magnetic information for the location rig site, make the corrections that are necessary, and send the data, corrected, back to the rig site.