Intelligent Drift was designed to meet the requirement for accurate Hold-Up Depth (HUD) measurement, without the need for an on-site specialist. Intelligent Drift works on the ‘run-it-yourself’ principle; the tool acquires Gamma Ray and CCL for correlation purposes, and pressure and temperature for information on the wellbore conditions.
As with the ‘rig-run’ pressure gauge, there is a simple interface for wireline personnel to program/recover data, which is then sent for analysis. The need for an external depth encoder system is removed by the use of a PC-based software package, which uses depth stretch/compress algorithms to correlate the time-based tool file to the reference log for the well.
Prior to a well intervention, it is normal procedure to perform a drift run in the well. The OD of the drift is usually slightly larger than that of the intervention tool; the idea being that the drift run can determine the Hold-Up Depth (HUD), and also detect any restrictions in the well that would have affected the intervention. During the drift run it has become common practice to include a ‘run-it-yourself’ electronic memory pressure gauge in the toolstring, recording wellbore pressure as the drift run is performed.
The Intelligent Drift uses a simple ‘one-button’ operation by rig-based personnel. The data files acquired are then transmitted back to the office for analysis. The incumbent wireline crew typically perform the drift run on slickline; with depth control/reporting being purely based on the wireline winch display.
Intelligent Drift
Intelligent Drift was designed to meet the requirement for accurate Hold-Up Depth (HUD) measurement, without the need for an on-site specialist. Intelligent Drift works on the ‘run-it-yourself’ principle; the tool acquires Gamma Ray and CCL for correlation purposes, and pressure and temperature for information on the wellbore conditions.
As with the ‘rig-run’ pressure gauge, there is a simple interface for wireline personnel to program/recover data, which is then sent for analysis. The need for an external depth encoder system is removed by the use of a PC-based software package, which uses depth stretch/compress algorithms to correlate the time-based tool file to the reference log for the well.
Prior to a well intervention, it is normal procedure to perform a drift run in the well. The OD of the drift is usually slightly larger than that of the intervention tool; the idea being that the drift run can determine the Hold-Up Depth (HUD), and also detect any restrictions in the well that would have affected the intervention. During the drift run it has become common practice to include a ‘run-it-yourself’ electronic memory pressure gauge in the toolstring, recording wellbore pressure as the drift run is performed.
The Intelligent Drift uses a simple ‘one-button’ operation by rig-based personnel. The data files acquired are then transmitted back to the office for analysis. The incumbent wireline crew typically perform the drift run on slickline; with depth control/reporting being purely based on the wireline winch display.
Applications:
Datasheet: Intelligent Drift