Chingwe chaching'ono cha hydraulic chomwe chimagwiritsidwa ntchito pogwiritsira ntchito zida zotsikira pansi monga valavu yachitetezo chapansi pamadzi (SCSSV).Machitidwe ambiri omwe amagwiritsidwa ntchito ndi mzere wowongolera amagwira ntchito mopanda chitetezo.Munjira iyi, mzere wowongolera umakhalabe wopanikizika nthawi zonse.Kutayikira kulikonse kapena kulephera kumabweretsa kuwonongeka kwa kuthamanga kwa mzere wowongolera, kuchita kutseka valavu yachitetezo ndikupangitsa chitsime kukhala chotetezeka.
Valavu yachitetezo chapansi pamadzi (SCSSV)
Valavu yotetezera kutsika yomwe imayendetsedwa kuchokera kumtunda kudzera pa mzere wowongolera womangidwira kunja kwa chubu chopangira.Mitundu iwiri yofunikira ya SCSSV ndiyofala: yobweza mawaya, pomwe zida zazikulu zotetezera zimatha kuyendetsedwa ndikubwezedwa pa slickline, ndi ma chubu obweza, momwe gulu lonse lachitetezo limayikidwa ndi chingwe cha chubu.Dongosolo loyang'anira limagwira ntchito mopanda chitetezo, ndi mphamvu ya hydraulic control yomwe imagwiritsidwa ntchito potsegula mpira kapena msonkhano wa flapper womwe ungatseke ngati kuwongolera kutayika.
