Ulayini we-hydraulic wobubanzi obuncane obusetshenziselwa ukusebenzisa imishini yokuqedela imigodi engaphansi njengevalvu yokuphepha engaphansi komhlaba elawulwa ngaphezulu (SCSSV).Amasistimu amaningi asebenza ngomugqa wokulawula asebenza ngokuhluleka ukuphepha.Kule modi, ulayini wokulawula uhlala ucindezelwe ngaso sonke isikhathi.Noma yikuphi ukuvuza noma ukwehluleka kuholela ekulahlekelweni kwengcindezi yolayini wokulawula, okusebenza ukuvala ivalvu yokuphepha nokwenza umthombo uphephe.
I-Subsurface Safety Valve (SCSSV) elawulwa ngaphansi komhlaba
I-valve yokuphepha ye-downhole esebenza kusuka ezindaweni ezingaphezulu ngomugqa wokulawula oboshelwe endaweni yangaphandle yeshubhu lokukhiqiza.Izinhlobo ezimbili eziyisisekelo ze-SCSV zivamile: ulayini obuyiselekayo, lapho izingxenye zevalvu yokuphepha eziyinhloko zingasetshenzwa futhi zilandwe ku-slickline, kanye neshubhu elikhiphekayo, lapho lonke ukuhlanganiswa kwe-valve yezokuphepha kufakwa khona ngentambo yeshubhu.Uhlelo lokulawula lusebenza kumodi ehlulekayo, ngokucindezela kokulawula kwe-hydraulic okusetshenziselwa ukubamba ukuvula ibhola noma umhlangano we-flapper ozovala uma ukucindezela kokulawula kulahleka.
