) appearing at the bottom of the General tab. For information on using
this button see the Attachment Functionality topic.Non-Productive Time (NPT) Data
Interactive Well Site > Available Daily Operations Data
The NPT form is used to record incidents that occur during a Rig Operations that involve equipment failure or lost time (referred to as NPT). This information allows a company to record operations experience and learnings that can be analyzed to improve performance. For more information see the Knowledge Management and NPT and Equipment Failure topics.
NPT data is recorded from the surface and subsurface Daily Operations link.
NPT data is associated to timed activity (see Activity Data). For this reason, NPT data cannot be entered unless an associated activity exists.
The NPT form allows users to add, review, edit and delete NPTs, during specified timed activities.
For information on how to enter NPT data, see the Recording Non-Productive Time (NPT) Data topic.
Special Fields and Functions
Unplanned Event Type
The Unplanned Event Type area defines the type of unplanned event. The following options are available:
Equipment Failure - This option is used to describe Equipment Failures that do not affect the primary Rig Operation. This option enables the rig site supervisor to document any equipment failures that occur during off-line activities. Combined with operations equipment failures (that cause NPT), OpenWells software enables all equipment failures to be thoroughly documented. The NPT tab is not available when this option is selected.
Equipment Failure with NPT - This option is used in the event of an Equipment Failure which causes Non-Productive Time and which delays construction of the Well or Well Operation. These events result in remedial operations enabling the Rig to return to operation being performed at the time of the equipment failure.
NPT (No Failure) - This option is used to document the delay of the primary Well Operation that does not coincide with an equipment failure. The Equipment Failure and Obstructions tabs are not available when this option is selected.
NPT Activities
The NPT Activities area is used to record the activities, which define the start and end of a Non-Productive Time event. The Start and End picklists are populated with activities entered in the Time Summary form.
Start Date/Time and End Date/Time in Event Area
For an Event causing NPT, the Start and End Date/Time fields appear greyed-out. These greyed-out fields are defined by the NPT Activities Start date (i.e., starting date and time of the Start activity) and the End date (i.e., ending date and time of the End activity). During the course of an NPT event, the End date/time may be empty until the end of the event has been identified.
Gross Time
The Gross Time field is an editable calculated field. Gross Time can be calculated in the following two ways:
For an unplanned
event that does not cause NPT, this field is calculated as follows:
Gross Time = NPT Events End Date/Time - NPT Events Start Date/Time
expressed in hours.
For an unplanned
event causing NPT, this field is calculated as follows:
Gross Time = NPT Activities End Date/Time - NPT Activities Start Date/Time
expressed in hours.
Note: Changing the start or
end fields will cause the application to recalculate the Gross Time,
thereby overwriting any changes made by the user.
Productive Time Adjustment
The Productive Time Adjustment field is only available for an event causing NPT. This enables the user to document the amount of constructive time that may occur within an NPT event.
Nested NPT
Nested NPT field is calculated based on the Net Times of all NPT activities "nested" within the current NPT event. For information on NPT Levels and "nested" NPT, see the NPT Level field's explanation below. For more information, see the Nested NPT topic.
Net Time
The Net Time field is calculated as follows:
Net Time = Gross Time - Productive Time Adjustment - Nested NPT Time
Create User
The Create User field is a grayed-out field populated by the name of the user who created the Equipment Failure/NPT event.
Total Gross Cost
The Total Gross Cost calculates the cost for the current Equipment Failure and/or NPT and the Net Costs of all "nested" Equipment Failures and/or NPTs. This field is calculated as follows:
Total Gross Cost = ∑ All Nested NPTs Total Cost Net Nested + Current NPT Total Cost Net
Total Net Cost
The Total Net Cost calculates the net cost for the current Equipment Failures/NPT. This field is calculated as follows:
Total Net Cost = Contractor Cost + Other Cost + Gross Cost + (Net Time * Day Rate / 24 hours)
This field defines the level of non-productive time for the activity.
Level 0 - This level defines the activity as productive.
Level 1 - This level defines the activity as the first NPT level
Level 2 and on - This level defines a NPT incident, which occurs during the previous Level's NPT (i.e. Level 1).
A NPT event that occurs within the interval of another NPT event is considered " nested".
Tracking Number
The Tracking Number field defines the non-conformance event number used for tracking purposes. This field is populated based on the Well Name and the Activity Start Date and Time. The date and time are formatted according to the PC's Window's Regional Settings.
Tracking No. = Well Name + Date + Start Time (e.g. 22/30a-AC (Scoter) 05/04/2004 09:00)
Attachments
Attached documents can be associated with
an Equipment Failure and/or NPT using the Attachments button (
) appearing at the bottom of the General tab. For information on using
this button see the Attachment Functionality topic.
Lessons Learned
Lessons can be attached to an Equipment Failure
and/or NPT using the Lessons button ( 
) appearing at the bottom of the General tab. Lessons added to the Equipment
Failure/NPT dialog appear in the Associated Data Viewer,
in Classic OpenWells, when the associated Well node is selected.
The Lesson button allows the user to create and view a Lesson. For information on creating a "New Lesson" see the Lesson Command topic. To view a current Lesson select the Lesson Name from the button picklist.
Note: Only one Lesson can be associated with an Equipment Failure/NPT event.
Units Picklist 
The Unit Management System in the EDM™ database controls display units in EDT™ applications. Every numerical element in the EDM database has a storage measure (some known quantity in the physical world) associated with it such as feet, ft/sec, or °F.
In OpenWells® software, Active Viewing Units (or Display Units as they are sometimes referred to) are for presentation purposes only. Display units can changed at any time and do not affect the quality of the data.
Active Viewing Units for the OpenWells application are selected from the Unit picklist located at the top of each page.
Datum Selector 
The reference point for depths changes over the life cycle of a Well, with changes in rigs and viewing data requirements.
The Datum Selector, located at the top of each page, allows users to change displayed the depth reference point (datum) on the fly.
Changing the depth reference point displays depths relative to the datum selected. This DOES NOT change the values in the database itself.
Data MUST be entered correctly in context to the selected datum reference point.
The following example shows how the viewing datum affects the data you see.
Print Page 
The Print Page button allows users to print the current page as it appears in the window.