2. Material: 201 304 304L 316 316L Q235
3. Another name: Pipe base screen
4. Screen jacket: Johnson type screen
6. Connection type: STC, LTC,BTC threaded couplings7. Bubble bag, wooden pieces wrapped the Johnson screens
screen jacket base pipe
Multilayer well screen pipes are used for oil and water exploiting.
Characteristics:
~ Pipe base screen consists of two screens or multilayer screens
~ Perforated pipe inside ,with perforations wrapped by the outside Johnson type screen
~ The screen jacket and base pipe are welded together with a length of coupling.
~ The base pipe can be made of seamless pipe or welded pipe, and more often, casing pipes.
~ ID of Johnson type screen equals OD of the perforated pipe.
Sand control screen consists of two layers