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In a particle or sand screen control assembly for mounting on a base pipe used in a well, a sealing strip preferably in the form of a metal strip is used in a weld joint that joins the metal mesh screen of filter media to a solid metal structure or "safe edge". The sealing strip covers the pores in

In a particle or sand screen control assembly for mounting on a base pipe used in a well, a sealing strip preferably in the form of a metal strip is used in a weld joint that joins the metal mesh screen of filter media to a solid metal structure or "safe edge". The sealing strip covers the pores in the screen proximate the metal structure to which it is welded. The sealing strip is a separate thin sheet of metal that is compatible with the welding metal used in the weld joint, such that the sealing strip becomes unitary with the weld joint. Prior to welding, the sealing strip may be bent around the screen if desired, or may lie flat along the top or bottom surface of the screen.

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In a particle or sand screen control assembly for mounting on a base pipe used in a well, a sealing strip preferably in the form of a metal strip is used in a weld joint that joins the metal mesh screen of filter media to a solid metal structure or "safe edge". The sealing strip covers the pores in

In a particle or sand screen control assembly for mounting on a base pipe used in a well, a sealing strip preferably in the form of a metal strip is used in a weld joint that joins the metal mesh screen of filter media to a solid metal structure or "safe edge". The sealing strip covers the pores in the screen proximate the metal structure to which it is welded. The sealing strip is a separate thin sheet of metal that is compatible with the welding metal used in the weld joint, such that the sealing strip becomes unitary with the weld joint. Prior to welding, the sealing strip may be bent around the screen if desired, or may lie flat along the top or bottom surface of the screen. US-5679228, 19971000, Batchelder et al., 204/524; US-5679229, 19971000, Goldstein et al., 204/524; US-5788826, 19980800, Nyberg, 204/536; US-5858191, 19990100, DiMascio et al., 204/524; US-5868915, 19990200, Ganzi et al., 204/524; US-5891328, 19990400, Goldstein, 210/321.6; US-6187162, 20010200, Mir, 204/524; US-6197174, 20010300, Barber et al., 204/524; US-6402916, 20020600, Sampson et al.