| 主权项 |
1. A logging tool for detecting an element present in a fluid surrounding the tool downhole, the element being at least one gas/water bubble, particle or debris in the fluid, the tool having a longitudinal axis and comprising:
an emitting device to emit radiation, a lens to transmit the radiation in a predetermined pattern of radiation, and a receiving device,wherein the pattern of radiation is reflected on an object and the reflected radiation is received in the receiving device, and when the element is present in the fluid outside the emitting device, part of the pattern of radiation is scattered and/or reflected by the element, resulting in a change in the pattern of radiation and a first measurement. |
