API PUBL 3855 Conventions and Implementation Guidelines for EDI Wellsite Information Transfer Specification (WITS)
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API PUBL 3855 Document Information:
Title
Conventions and Implementation Guidelines for EDI Wellsite Information Transfer Specification (WITS)
American Petroleum Institute
Publication Date:
Jul 1, 1991
Scope:
The WELLSITE INFORMATION TRANSFER SPECIFICATION (WITS) is a
communications format used for the
transfer of a wide variety of wellsite data from one computer system
to another. It is presented as
a recommended format by which Operating and Service companies involved
in the Exploration and
Production areas of the Petroleum Industry may exchange data in either
an online or batch transfer
mode.
WITS is a multi-level format which offers an easily achieved entry
point with increasingly flexible
higher levels. At the lower levels, a fixed format data stream is
employed, while, at higher
levels, a self-defining customizable data stream is available.
A WITS data stream consists of discrete data records. Each data record
type is generated
independently of other data record types and each has a unique trigger
variable and sampling
interval. The rig activity usually determines which records are
applicable at any given time such
that only appropriate data is transmitted.
WITS also incorporates the means for a remote computer system to send
instructions to the sending
system in order to set or change certain parameters, induding the type
of data transmitted and the
interval for transmission.
As well as specifying a format for data transmission, WITS also
defines a basic set of record types
to which user-defined record types may be added.
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