A wellbore completion apparatus residing within a wellbore, comprising: a first sand screen assembly having one or more sand control segments (850; 914a-n; 1310; 1360) connected in series, wherein each sand control segment comprises: a perforated base pipe (854; 1312; 1362) having one or more joints, at least one transport conduit (1316; 1366; 1420) extending substantially along the base pipe for transporting gravel packing slurry, a filtering medium (856; 1314; 1364) radially around the base pipe along a substantial portion of the base pipe so as to form a sand screen, and at least one packing conduit (1318; 1368; 1430) having a nozzle configured to release gravel packing slurry into an annular region between the filtering medium and the surrounding subsurface formation; and the filtering medium of each sand screen comprises a wire-wrapped screen, a membrane screen, an expandable screen, a sintered metal screen, a wire-mesh screen, a shape memory polymer, or a pre-packed solid particle bed; a first joint assembly (1000, 1100) comprising: a non-perforated base pipe, at least one transport conduit (1008a-1008f; 1108a-1108f) extending substantially along the non- perforated base pipe, and at least one packing conduit (1008g-1008i; 1108g-1108i) having a nozzle configured to release gravel packing slurry into an annular region between the non-perforated base pipe and a surrounding subsurface formation; a packer assembly (210', 210"; 300; 1320, 1340) comprising: at least one sealing element (1322, 1342), an inner mandrel, and at least one transport conduit (1326, 1346) extending substantially along the inner mandrel; wherein the first sand screen assembly, the first joint assembly, and the packer assembly are connected in series so that (i) the perforated base pipe of the one or more sand control segments, the non-perforated base pipe of the first joint assembly, and the inner mandrel of the packer assembly are in fluid communication; and (ii) the at least one transport conduit in the one or more sand control segments, the at least one transport conduit in the first joint assembly, and the at least one transport conduit in the packer assembly are in fluid communication. a first sand screen assembly having one or more sand control segments (850; 914a-n; 1310; 1360) connected in series, wherein each sand control segment comprises: a perforated base pipe (854; 1312; 1362) having one or more joints, at least one transport conduit (1316; 1366; 1420) extending substantially along the base pipe for transporting gravel packing slurry, a filtering medium (856; 1314; 1364) radially around the base pipe along a substantial portion of the base pipe so as to form a sand screen, and at least one packing conduit (1318; 1368; 1430) having a nozzle configured to release gravel packing slurry into an annular region between the filtering medium and the surrounding subsurface formation; and the filtering medium of each sand screen comprises a wire-wrapped screen, a membrane screen, an expandable screen, a sintered metal screen, a wire-mesh screen, a shape memory polymer, or a pre-packed solid particle bed; a perforated base pipe (854; 1312; 1362) having one or more joints, at least one transport conduit (1316; 1366; 1420) extending substantially along the base pipe for transporting gravel packing slurry, a filtering medium (856; 1314; 1364) radially around the base pipe along a substantial portion of the base pipe so as to form a sand screen, and at least one packing conduit (1318; 1368; 1430) having a nozzle configured to release gravel packing slurry into an annular region between the filtering medium and the surrounding subsurface formation; and the filtering medium of each sand screen comprises a wire-wrapped screen, a membrane screen, an expandable screen, a sintered metal screen, a wire-mesh screen, a shape memory polymer, or a pre-packed solid particle bed; a first joint assembly (1000, 1100) comprising: a non-perforated base pipe, at least one transport conduit (1008a-1008f; 1108a-1108f) extending substantially along the non- perforated base pipe, and at least one packing conduit (1008g-1008i; 1108g-1108i) having a nozzle configured to release gravel packing slurry into an annular region between the non-perforated base pipe and a surrounding subsurface formation; a non-perforated base pipe, at least one transport conduit (1008a-1008f; 1108a-1108f) extending substantially along the non- perforated base pipe, and at least one packing conduit (1008g-1008i; 1108g-1108i) having a nozzle configured to release gravel packing slurry into an annular region between the non-perforated base pipe and a surrounding subsurface formation; a packer assembly (210', 210"; 300; 1320, 1340) comprising: at least one sealing element (1322, 1342), an inner mandrel, and at least one transport conduit (1326, 1346) extending substantially along the inner mandrel; at least one sealing element (1322, 1342), an inner mandrel, and at least one transport conduit (1326, 1346) extending substantially along the inner mandrel;