Along-string pressure, temperature measurements hold revolutionary promise for downhole management

摘要

Combining logging while drilling, directional drilling, rotary steerable tools and wired pipe in land drilling operations provides significant advantages over traditional methods. Field trials showed that when the drillstring began drilling, values changed as the drillstring moved deeper or shallower. But the constant relationship between the sensor measurements remained while their absolute values changed over time. Solids occasionally interfered with the system homogeneity and caused unexpected readings. A quick quality control method helped ensure sensor measurements were consistent with the environment they are exposed to. This method involved making certain that all sensors reacted consistently when a new joint of pipe was inserted into the string at the surface.