Downhole Vision Questionnaire

What Needs Surveying?

What needs inspection / what is it that you’re trying to see or determine?

For wells:

• Type? Oil / gas / water / geothermal…?
• What is the borehole size? We don’t necessarily need a full-blown well schematic, but it’s important to know the range of casing / tubing IDs, and the minimum size of any jewelry through which the tool must pass.
• What’s the deviation?
• What will be the max working depth?
• Max working temperature?
• Max working pressure?
• Are there corrosives such as H₂S or CO₂, or other chemical considerations?

For other boreholes:

• Will or might there be fluid? If so, at what depth?
• What is the borehole ID? Are there likely to be larger voids / caverns?
• What is the borehole depth?

Hoisting

For existing / third party:

• Is there existing wireline / slickline / coax / coil you’d like to deploy from?
• What kind of line is it? i.e., 5/16″ mono-conductor
• How long is it?
• What are its terminations? (Both at the tool and on surface at the slip ring or panel.)
• Is there a [secondary] depth encoder available? If so, what are its connectors / pinouts?
• Is there some sort of control shack from which to operate?

For new systems:

• How do you intend to transport the system? Van / trailer / pickup (ute) / cart / by hand…?

Location

• Are there size / weight considerations, such as the necessity to travel via helicopter or ATV?
• Will the tools need to fly in passenger aircraft?
• What climate will surface equipment be subjected to?

Timeframe

Tell us what you need to be where, and when.