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API PUBL 3855

1.1 Edition, July 1, 1991

Complete Document

Conventions and Implementation Guidelines for EDI Wellsite Information Transfer Specification (WITS)

Includes all amendments and changes through Change/Amendment , July 1991


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O38550 * NO LONGER AVAILABLE
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Product Details:

  • Revision: 1.1 Edition, July 1, 1991
  • Published Date: July 1991
  • Status: Not Active, See comments below
  • Document Language: English
  • Published By: American Petroleum Institute (API)
  • Page Count: 177
  • ANSI Approved: No
  • DoD Adopted: No

Description / Abstract:

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.