Borehole Logs

Borehole logs are used to display the results of oil and gas, mining, geotechnical and environmental drilling and sampling. Logs can be used to display soil, rock, and ice sample. Using WinLoG, there are no limits to the type of borehole logs that can be created. In WinLoG the term borehole logs also includes boring logs and well logs.

Borehole logs are grouped into projects and are stored in the WinLoG project database. The format of the project database is Microsoft Access 2000. Each project is stored in a separate directory, which can be on the same computer or spread across a network. For a detailed discussion of the database structure, see .

Logs can contain general borehole data (ex. location, client, project number); lithologic descriptions and symbols for each layer; sample data; well completion details; water level measurements; geophysical logs; and numerous graphs and text columns. Once a log is created it can be easily copied using a toolbar button, and then edited and saved to represent other boreholes on the same site.

This chapter describes how to:

• Create a new borehole log
• Enter and edit the following information:
• General borehole data
• Log depth and elevation
• Deviation survey data
• Lithologic descriptions
• Sample data
• Well data
• Remarks
• Text Interval Data
• Facies Data
• Constituents Data
• Members Data
• Graph data
• Water Content data
• Core log data
• Geophysical data
• Cross-plots
• Percent Cuttings data
• Core Photo data
• Paragraph text
• Bitmaps
• Lines and arrows
• Rectangles
• Tables
• Deviation Survey data
• Import Excel Log data
• Import Excel Project data
• Import Deviation Survey data
• Save a borehole log.
• Print a borehole log.
• Copy a borehole log.
• Change the template for a borehole log.

These tasks can be performed using menu commands on the File menu and Edit menus or speed buttons on the Borehole Log toolbar, shown below.

Templates (see ) are used to control the layout and formatting of borehole logs. In general, all of the boreholes in a project would use one or two templates to format the logs. In this way, a consistent format can be established within a project and across projects. Once a template is created it is available to all projects.