Multiple Well Stimulation System

Abstract

A fluid fracturing system include a fracturing fluid flow regulation assembly which can connect in various configurations to a fracturing tree of a wellhead. The fracturing fluid flow regulation assembly connected to the fracturing tree can be connected by one or more fluid conveying conduits to one or more fracturing fluid pumps, without use of a conventional intermediate fracturing manifold.

1 . A fracturing fluid flow regulation assembly to regulate delivery of fracturing fluid to a fracturing tree connected to a wellhead of a surface well, comprising:
 a valved conduit including at least one valve operable to regulate flow of said fracturing fluid between a valved conduit first end and a valved conduit second end;   a fracturing fluid mixing block connected to said valved conduit first end, said fracturing fluid mixing block defining an internal mixing chamber and a plurality of mixing block ports connectable to one or more fracturing fluid conveying conduits; and   a connection block connected to said valved conduit second end, said connection block defining an internal flow path and a plurality of connection block ports connectable to said fracturing tree.   
     
     
         2 . The fracturing fluid flow regulation assembly of  claim 1 , wherein said at least one valve comprises a first and second valves directly connected in series to regulate flow of said fracturing fluid between said valved conduit first end and said valved conduit second end. 
     
     
         3 . The fracturing fluid flow regulation assembly of  claim 2 , wherein said first and second valves independently regulate flow of said fracturing fluid between said valved conduit first end and said valved conduit second end. 
     
     
         4 . The fracturing fluid flow regulation assembly of  claim 1 , wherein said fracturing tree comprises a vertical fracturing tree, and wherein said connection block connects to said vertical fracturing tree to dispose a longitudinal axis of said fracturing fluid flow regulation assembly in substantially fixed axial relation to a longitudinal axis of said vertical fracturing tree. 
     
     
         5 . The fracturing fluid flow regulation assembly of  claim 1 , wherein said fracturing tree comprises a vertical fracturing tree, and wherein said connection block connects to said vertical fracturing tree to dispose a longitudinal axis of said fracturing fluid flow regulation assembly in substantially fixed orthogonal relation to a longitudinal axis of said vertical fracturing tree. 
     
     
         6 . The fracturing fluid flow regulation assembly of  claim 1 , wherein said fracturing tree comprises a vertical fracturing tree, and wherein said connection block connects to said vertical fracturing tree to dispose a longitudinal axis of said fracturing fluid flow regulation assembly in substantially fixed parallel relation to a longitudinal axis of said vertical fracturing tree. 
     
     
         7 . The fracturing fluid flow regulation assembly of  claim 6 , wherein said connection block comprises a first connection block connected to said valved conduit second end and second connection block connected to said vertical fracturing tree, said first and second connection blocks connected to dispose a longitudinal axis of said fracturing fluid flow regulation assembly in substantially fixed parallel relation to a longitudinal axis of said vertical fracturing tree. 
     
     
         8 . The fracturing fluid flow regulation assembly of  claim 7 , further comprising a spacer spool connected between said first and second connection blocks. 
     
     
         9 . A well stimulation system, comprising:
 a fracturing tree connected to a wellhead of a well;   a fracturing fluid flow regulation assembly connected to said fracturing tree, including:
 a valved conduit including at least one valve operable to regulate fluid flow between a valved conduit first end and a valved conduit second end; 
 a fracturing fluid mixing block connected to said valved conduit first end, said fracturing fluid mixing block defining an internal mixing chamber and a plurality of mixing block ports connectable to one or more fracturing fluid conveying conduits; and 
 a connection block connected to said valved conduit second end, said connection block defining an internal flow path and a plurality of connection block ports connectable to a fracturing tree; 
   a fracturing fluid pump connected to said fracturing fluid mixing block; and   a fracturing fluid supply which delivers fracturing fluid to said fracturing fluid pump.   
     
     
         10 . The well stimulation system of  claim 9 , further comprising a proppant supply which delivers a proppant to said fracturing fluid. 
     
     
         11 . The well stimulation system of  claim 10 , further comprising a chemical additive supply which delivers a chemical additive to said fracturing fluid. 
     
     
         12 . The well stimulation system of  claim 11 , further comprising a fracturing fluid blender which blends said proppant or said chemical additive with said fracturing fluid delivered to said fracturing fluid pump. 
     
     
         13 . The well stimulation system of  claim 9 , wherein said at least one valve comprises a first and second valves directly connected in series to regulate flow of said fracturing fluid between said valved conduit first end and said valved conduit second end. 
     
     
         14 . The well stimulation system of  claim 13 , wherein said first and second valves independently regulate flow of said fracturing fluid between said valved conduit first end and said valved conduit second end. 
     
     
         15 . The well stimulation system of  claim 9 , wherein said fracturing tree comprises a vertical fracturing tree, and wherein said connection block connects to said vertical fracturing tree to dispose a longitudinal axis of said fracturing fluid flow regulation assembly in substantially fixed axial relation to a longitudinal axis of said vertical fracturing tree. 
     
     
         16 . The well stimulation system of  claim 9 , wherein said fracturing tree comprises a vertical fracturing tree, and wherein said connection block connects to said vertical fracturing tree to dispose a longitudinal axis of said fracturing fluid flow regulation assembly in substantially fixed orthogonal relation to a longitudinal axis of said vertical fracturing tree. 
     
     
         17 . The well stimulation system of  claim 9 , wherein said fracturing tree comprises a vertical fracturing tree, and wherein said connection block connects to said vertical fracturing tree to dispose a longitudinal axis of said fracturing fluid flow regulation assembly in substantially fixed parallel relation to a longitudinal axis of said vertical fracturing tree. 
     
     
         18 . The well stimulation system of  claim 17 , wherein said connection block comprises a first connection block connected to said valved conduit second end and second connection block connected to said vertical fracturing tree, said first and second connection blocks connected to dispose a longitudinal axis of said fracturing fluid flow regulation assembly in substantially fixed parallel relation to a longitudinal axis of said vertical fracturing tree. 
     
     
         19 . The well stimulation system of  claim 18 , further comprising a spacer spool connected between said first and second connection blocks. 
     
     
         20 - 30 . (canceled)