Ven-Xtend™ is an alkaline salt used to extend the set-time of Ven-Block™ plugs. Prior to the addition of Ven-Block™, the mixing water should be buffered to the desired pH by the addition of Ven-Xtend™. Ven-Xtend™ may be used to extend the pumping times of Ven-Block™ from 15 minutes to 5 hours or more in fresh water, sea water, and sodium or potassium chloride brines.
1) Ven-Xtend™ is used to extend the set-time of Ven-Block™ polymer-based lost circulation pills.
2) Ven-Xtend™ may be mixed through the mixing hopper or added directly to the mixing tank.
3) Concentrations higher than 5 or 6 lb/bbl should be avoided because the final strength of the Ven-Block™ pill will be reduced.
4) Refer to the Ven-Block™ mixing procedure for complete instructions on using Ven-Xtend™.
Ven Xtend PDS