title: Wellsite Information Transfer Specification
text: # Wellsite Information Transfer Specification
  
  The Wellsite Information Transfer Specification (WITS) is a specification for the transfer of drilling rig-related data. This petroleum industry standard is recognized by a number of companies internationally and is supported by many hardware devices and software applications.
  
  WITS is a multi-layered specification:
  
  * Layer 0 describes an ASCII-based transfer specification
  * Layer 1 describes a binary-based format based on 25 predefined fixed-size records and the Log Information Standard (LIS) data-transmission specification
  * Layer 2 describes bidirectional communication using LIS Comment records
  * Layer 2b describes buffering of data
  * Layer 4 extends the previous layers to use a different data exchange format, RP66
  
  Though still in active use as of 2013, the specification has been superseded by the XML-based WITSML.
  
  