EP 1110-1-27
27 Jan 00
b. Information recorded at well site. As an onsite backup, brief basic information on the well
should be kept within the casing or casing protection sleeve or structure. This information should include:
Dimensions of the entire well (depth), casing (length) and screen (length, location, type, and
slot sizes), and filter pack (length, thickness, and particle sieve sizes).
Material construction of each.
Pump and power information.
Information on any inserts downhole.
Last service date and information on how to obtain more detailed records.
c. Offsite backup information. Files and video tapes kept at the project site should be duplicated at
an offsite location that will continue to be available to site O&M personnel perpetually, regardless of
changes in project management or service provider firms.
3-11. Downtime History
a. Information from well files. Well files should include a brief comment section on history of the
total (project site) system for use in pinpointing causes and effects. Service intervals, costs, details of
persons and companies involved, and analyses of results (what works, what doesn't, specific capacity
changes) should be included for a history analysis, and for the sake of the next person (perhaps years in
the future and unacquainted with the last service action).
b. Out-of-operation information. It is sometimes most useful to know why and how long a well
was out of operation. For example:
(1) It is commonly the case on HTRW remediation sites to construct wells and then to leave them
sitting idle for long periods during project development. It is widely observed that this practice results in
wells that must be rehabilitated before they can be used (Borch, Smith, and Noble 1993; Smith 1995;
NGWA 1998).
(2) Sites and individual wells may experience periods of hiatus in operations for various reasons.
Again, equipped, developed wells, perhaps already with developing degrading conditions, sit idle.
(3) Such information can help personnel in troubleshooting problems down the line to make sense
of the condition they find. Checklists for site well array O&M planning are provided in Chapter 8.
3-4
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