Process for well fluids base oil via metathesis of alpha-olefins

Abstract

Disclosed is a process for preparation of compositions having utility as well fluid base oils. The process involves metathesis of alpha-olefins followed by isomerization of the metathesis products. The base oils resulting from the process of this invention are environmentally friendly in that they are only mildly toxic to marine life and have very low pour point temperatures. These properties make the base oils ideal candidates for use as components of well fluids for cold climates and offshore applications.

1 - 25 . (canceled)  
   
   
       26 . An alkenyl succinic anhydride compound formed by chemically reacting maleic anhydride with a feed comprising specialty linear internal olefin's produced by a process for production of specialty linear internal olefins comprising the steps of: 
 (i) Providing a predominantly linear alpha-olefins feed wherein said alpha-olefins have from about 4 to 22 carbons atoms,    (ii) Subjecting said feed to metathesis conditions in the presence of a heterogeneous supported metathesis catalyst so as to form valuable liquid specialty linear internal olefins and gaseous ethylene as a by-product,    (iii) Separating the valuable liquid specialty internal olefin products from the gaseous ethylene so as to drive the reaction to completion and recover the valuable liquid specialty internal olefin products, and    (iv) Optionally, further purifying the liquid specialty internal olefins metathesis products from step (iii).    
   
   
       27 . (canceled)