| CPC E21B 43/2607 (2020.05) [E21B 43/26 (2013.01)] | 21 Claims | 

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               1. A hydraulic fracturing apparatus, comprising: 
            a) an assembly that includes a tool body and a work string; 
                b) wherein the work string is connected to and depends downwardly from the tool body; 
                c) a flowline that is spaced laterally away from the tool body and work string; 
                d) a clamp body having a first end and a second end, with said first end spaced away from said second end; 
                e) a first clamp segment located at said first end of said clamp body, wherein said first clamp segment has a fastening mechanism and a first concave member with a first concave surface; 
                f) a second clamp segment located at said second end of said clamp body that has a second concave member with a second concave surface; 
                g) wherein said first clamp segment concave surface is sized and shaped to engage the assembly of said tool body and work string; 
                h) wherein said second clamp segment concave surface is sized and shaped to engage said flowline; 
                i) the clamp body having a pair of spaced apart flanges connected by a web, said web having spaced apart end portions, each of said flange and said web connecting respectively at said web end portions to said first and second concave members; 
                j) each clamp segment having opposed slotted or apertured plates, each flange having a curved edge that connects the flange to a respective clamp segment; 
                k) a first concave member that is connectable to said first clamp segment in a connected position that connects said first clamp segment and said first concave member to the assembly of the tool body and work string; 
                l) a second concave member that is connectable to said second clamp segment and that connects said second clamp segment and second concave member to said flow line flowline; and 
                m) each said concave surface closely conforming to said work string or to said flow line between clamp segment upper and lower edges. 
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