engagement may not affect operation of the device a lowermost portion 78 of the tubular string 76 extends into the passage 58 of the lower assembly 42 opening the fluid loss control device 54 if not previously opened another portion 80 of the tubular string 76 extends through the passage 70 of the upper assembly 44 preferably the portion 78 is perforated to enhance flow of fluid indicated by arrows 82 into the tubular string 76 from the passage 58 and the portion 80 is not perforated to exclude flow of fluid indicated by arrows 84 from the formation 74 into the portion 80 a sealing device 86 carried on the tubular string 76 between the portions 78 80 engages a seal bore 88 at a lower end of the assembly 44 and isolates the passages 58 70 from each other in the assemblies 42 44 thus the fluid 82 from the formation 56 flows inwardly through the screen 50 into the passage 58 and into the tubular string portion 78 which communicates with an interior portion 92 of the tubular string 76 above the assemblies 42 44 fluid 84 from the formation 74 flows inwardly through the screen 62 into the passage 70 and then into an annulus 94 formed between the tubular string 76 and the wellbore 46 above the assemblies 42 44 flow between the annulus 94 and another interior portion 96 of the tubular string 76 is controlled by a remotely operable flow control device 98 interconnected in the tubular string flow between the lower interior tubular string portion 92 and the upper.