Some Test Results of the PTS Logging Tool as Lost Circulation Detector Under the Drilling Mud Condition

Abstract

The objective of the lost circulation detection test is to determine the condition, location, and scale of lost circulation using an modified version of the conventional press.ure/temperature/spinner (PTS) logging tool. The test was carried out at wellbores being drilled in August 1986 and 1987, .but since it had to be taken place in mud water accompanied with very precarious borehole walls, spinner sensitivity was found a problem of particular interest. A report follows on the progress and results of the lost circulation detection test up to date. This paper represents some of the research achievements included in the "Research and Development of Lost Circulation Techniques in Geothermal Wells" that is a part of the "Development of geothermal hot water power generation plant" an undertaking aided by the MITI Sunshine Project.