Caliper log - Wikipedia
A caliper log is a well logging tool that provides a continuous measurement of the size and shape of a borehole along its depth [1] and is commonly used in hydrocarbon exploration.
It uses a tool which has 2, 4, or more extendable arms. The arms can move in and out as the tool is withdrawn from the borehole, and the movement is converted into an electrical signal by a potentiometer. In the two arm tool (Fig. 9.1), the borehole diameter is measured.
LOGGING TOOL - 9074 - Century-Geo
The 9074, 8074, 7074 and 6074 Three Arm Caliper logging tools, are a three-arm caliper configuration used to measure the diameter of the borehole. They can be used in both open and cased holes. Natural Gamma and the casing collar locator are optionally available.
Borehole Caliper | US EPA - U.S. Environmental Protection Agency
2024年3月28日 · Using one or more tensioned-mechanical arms, caliper tools can continuously measure and record the size and/or shape of a borehole over its length. The caliper tool has value as a stand-alone log but is frequently used in conjunction …
Cased Hole Logging: Multi-Finger Caliper - Spartek Systems
The Multi-Finger Caliper (MFC) has 24 to 60 high resolution calipers which measures the internal radii of the wellbore tubing and casing. Accurate measurements can be made in tubular sizes from 1.75 inches to 9.63 inches in diameter.
Three Arm Caliper Logging Tool
The 9074, 8074, 7074 and 6074 Three Arm Caliper logging tools, are a three- arm caliper configuration used to measure the diameter of the borehole. They can be used in both open and cased holes. Natural Gamma and the casing collar locator are optionally available.
4 Borehole Geophysics – Implementing Advanced Site Characterization Tools
Caliper logging is often amongst the first of the geophysical tools to be deployed because of its durability and lower cost compared to video, electrical, or acoustic tools. Caliper logging is performed upward from the bottom of the borehole to the ground surface.
Openhole caliper logs - PetroWiki
2015年6月24日 · Openhole caliper logs provide data used in completion planning. Openhole calipers can be used with different types of logging tools and it is important to understand how the logging tool used may affect the resulting data.
Caliper logging of boreholes - Borehole Wireline
Caliper logging inside a casing string will confirm the internal diameter but also build of material on the inner surface and/or areas where the casing may have broken or failed. More specialised caliper probes can measure if the borehole’s circular cross section changes.
Caliper log - Wikiwand
A caliper log is a well logging tool that provides a continuous measurement of the size and shape of a borehole along its depth [1] and is commonly used in hydrocarbon exploration. The measurements that are recorded can be an important indicator of wash-outs, cave ins or shale swelling in the borehole, which can affect the results of other well ...