Abstract: A loss prevention screen includes a housing and a first plurality of rods, each rod having an uphole end and a downhole end. The plurality of rods is arranged within the housing to form a flow path that forces a fluid flowing through the housing to pass through gaps formed between the plurality of rods. A loss prevention tool includes a housing having a through bore and first and second loss prevention screens positioned within the housing.

Abstract: A multi-screen drilling mud screen system, comprises a drilling mud screen comprising a body, a drilling mud or completion fluid inlet at the first end of the body (or outlet at the second end of the body), a filter having openings, wherein the filter is fluidly connected to the body, a drilling mud or completion fluid outlet (or inlet) at the openings of the filter, and an end cap connected to the filter, wherein the filter comprises a plurality of rods spaced a distance apart disposed within a formed sheet having drilled holes or slots spaced apart to form the openings in the filter, or a wire wrap disposed within a formed sheet having drilled holes or slots spaced apart to form the openings in the filter. Methods of installing and using the drilling mud screen are also disclosed.