driver a wrench and or other hand tool or may only require use of a hammer to secure the jumper tubes additionally everything is attached to either the jumper tube or the well screen assembly so there are no small parts to complicate the assembly or be dropped into the well fig1 is a schematic side view of a well system 100 in accordance with the present disclosure the well system 100 is shown as being a horizontal well having a wellbore 114 that extends substantially vertically from a wellhead 18 at the surface then deviates to horizontal or substantially horizontal in the subterranean zone of interest 124 a casing 116 is cemented in the vertical portion of the wellbore and coupled to the wellhead 118 at the surface 120 the remainder of the wellbore 114 is completed open hole i e without casing a production string 122 extends from wellhead 118 through the wellbore 114 and into the subterranean zone of interest 124 a production packer 126 seals the annulus between the production string 122 and the casing 116 additional packers 126 can be provided between the screen assemblies 112 the production string 122 operates in producing fluids e g oil gas and or other fluids from the subterranean zone 124 to the surface 120 the production string 122 includes one or more well screen assemblies 112 three shown in some instances the annulus between the production string.