Multiple Activation Bypass Valve (MCBV) e sebetsa joang?

Tabeng ea ho lahleheloa ke ho potoloha nakong ea ho cheka, tšebeliso ea lisebelisoa tse ngata tsa "bypass valve" e ka finyella mahloriso a mangata a phahameng, lisebelisoa tse kholo tsa ho kenya liphahlo le ho phunya samente ntle le ho hula BHA.

Ho buloa ha valve ea bypass: pele o kenya ts'ebetso, qala ka ho hula BHA ho ea karolong e sireletsehileng ea seliba ebe o theola bolo e sebetsang. Ha bolo e sebetsang e le setulong sa bolo, pompo e tlaase e tla tšoara khatello butle. Ha phapang ea khatello e fihla ho 0.7-1.5mpa, khatello ea khatello e kholo ho feta matla a selemo ho etsa hore sleeve e thellang e theohe. Ha sleeve e thellang e theohela sebakeng se ka tlase sa moeli, lesoba la bypass la letsoho le thellang le tsamaisana le lesoba la bypass la karolo e ka holimo, 'me valve ea bypass ea buloa. Eketsa phallo ho phalliso ea kaho, pompa ka har'a plug slurry, 'me slurry ea plugging e kena ka lera la ho lutla ho tloha ka lesoba la bypass bakeng sa ho phunya ka kotloloho. Ha pompo e emisoa, letsoho le thellang le tla tsosolosa tlas'a matla a selemo, 'me valve ea bypass e tla koala ka boeona, e le ho fokotsa phello e ka khonehang ea pipe ea U-shaped kapa mathata a ho laola seliba. Ha lesoba la bypass le hloka ho buloa hape, pompo e ka sebetsoa butle hape.

Ho koaloa ha valve ea "by-pass": ka mor'a hore ho phethoe kaho ea plugging, ha ho hlokahala ho qalella ho phunya, ho theola libolo tse peli tse koetsoeng. Ha bolo e koetsoeng e fihla lesobeng la by-pass, e qala ho tšoara khatello 'me butle-butle e eketsa khatello. Ha phapang ea khatello e fihla khatellong e etselitsoeng ho kuta ea bolo e kentsoeng (khatello ea moralo ke 10 MPa), bolo e kentsoeng e ea kuta 'me e feta setulong sa bolo,' me bolo e kentsoeng le bolo e koetsoeng kaofela li oela ka basketeng ea bolo. Mokotla o thellang o ea holimo tlas'a ketso ea matla a selemo, lesoba le pota-potileng la letsoho le thellang le thekesela ka lesoba la bypass la motsoako o ka holimo, valve ea bypass e koetsoe 'me ho phunya ho tsosolosoa.

Ts'ebetsong ea seliba se otlolohileng, se tataisang hantle le se khelohileng hantle, ts'ebeliso ea Multiple activation bypass valve, e ka hlokomelang phallo e kholo ea metsi le li-cuttings tsa bethe, tse sa ntlafatseng feela ts'ebetso ea ho phalla hantle, empa hape le ho sireletsa lisebelisoa le lisebelisoa tse tlase. , Haeba ho hlokahala, bula lesoba la bypass ho hloekisa lerako le ka hare la casing kapa sehlopha sa BOP.

Ha tsamaiso ea bypass e hloka ho koaloa, kenya libolo tse peli tse koetsoeng, pepeta bolo ea ho notlela ka ho ts'oara (khatello ea moralo oa ho notlela bolo ea extrusion ke 7MPa), 'me u tsoele pele ho tšoara khatello ea ho koala tsamaiso ea bypass.