PEMEX is a software developer for Windows.
It is reported that the following Windows processes are part of SMED:
If you want to remove SMED from your computer, just go to Start > Control Panel > Add/Remove programs and select SMED from the list of programs.
It is reported that the following Windows processes are part of SIMECELE, SASIPA de PEMEX Refinación:
If you want to remove SIMECELE, SASIPA de PEMEX Refinación from your computer, just go to Start > Control Panel > Add/Remove programs and select SIMECELE, SASIPA de PEMEX Refinación from the list of programs.