DwpD Ltd., Depth Solutions
Depth Solutions tools for improving well depth and managing uncertainty
Wireline depth measurement:
methodology, calibration and verification
Wireline corrections:
elastic stretch, thermal correction,
stretch coefficient, IPD, creep correction,
wireline way-point
Drill pipe length measurement:
calibration and verification
Drill pipe length correction:
Driller’s Way-point Depth (DwpD)
Well depth data uncertainty:
Uncertainty requirements
Accuracy component specifications
Uncertainty calculations
3D position and positional uncertainty:
Way-point positional navigation
3D Way-point position
Arc-chord correction
3D Way-point positional uncertainty
The book:
Improved well depth using DwpD
Driller’s Way-point Depth (DwpD) offers enhanced drill pipe derived well depth determination by utilizing rig-state information, particularly during Pulling Out of Hole (POOH) with Simple Sliding Motion (SSM). Using the POOH SSM rig-state as part of the DwpD method minimizes complex corrections by focusing only on thermal expansion and elastic stretch. DwpD reduces uncertainty associated with well depth determination, leading to better reservoir modeling and more efficient resource extraction. Way-points, being speciifc subsurface events identifed along the well bore, serve as positional references identifed using calibrated pipe length and pipe length corrections.
