oil well drilling equipment used in an illustrative drilling and completion environment is shown a cross sectional view of a wellbore 116 that has been drilled with casing 128 and tubing 126 in accordance with certain embodiments of the present disclosure is denoted generally with reference numeral 100 a drilling platform 102 supports a derrick 104 having a traveling block 106 for raising and lowering a drill string not shown wireline slickline or coiled tubing an annulus 132 is formed between the casing 128 and the formation 130 cement 118 is pumped down the wellbore 116 e g through the interior of the casing 128 and up through the annulus 132 where it sets and holds the casing 128 in place the cement 118 may be directed downhole using a cement pumping unit not shown or other types of rig pumping equipment not shown as appropriate the casing 128 and tubing 126 may be concentric tubes inside the wellbore 116 an scssv 120 may be installed in the wellbore 116 with tubing 126 coupled to each side as shown in fig1 in such embodiments the scssv 120 would be semi permanently installed in the wellbore 116 in order to remove the scssv 120 the entire string of tubing 126 may be removed from the wellbore 116 in other embodiments not shown in fig1 the scssv 120 may be installed in the wellbore 116 on wireline coiled tubing or some other semi flexible work string in such embodiments the scssv 120 may be installed in a profile.