194mm 6m API kubowola kolala casing ndi chubu kubowola kolala pobowola madzi chitsime

Mawonekedwe a Collar ndi Pipe

Kubowola kolala kumagwiritsidwa ntchito makamaka popereka zobowola zokhala ndi mphamvu yobowola yofunikira, kuwonetsetsa kuti mphamvu yokoka imaperekedwa pobowola chitoliro ndikuyika pobowola pakati.Malinga ndi mafotokozedwe a API Spec7-1, zinthu zakuthupi ndi 4145H pambuyo pa chithandizo cha kutentha, chithandizo choumitsa ulusi ndi phosphate kuti muchepetse kugwidwa.Komanso akhoza kupangidwa pa zofuna za makasitomala.

Kolala ya Heavy Weight Drill ndi gawo lofunikira pakuchita kwa Jcdrillpansi dzenje pobowola zida.Makola obowola amapereka kulemera pa bit pobowola kudzera mu mapangidwe.Ma rig drillers amatha kuyang'anira kulemera komwe kumayikidwa pa bit poyang'anira pogwiritsa ntchito mawerengedwe osavuta, ndi sikelo yowonetsera kulemera, pamtunda wazitsulo.Makolala obowola nthawi zambiri amakhala 31' m'litali, okhuthala ndi mipanda, ndi chitsulo cholemera.Amabwera bokosi ndi pini yokhala ndi zolumikizira zofananira, kuti agwirizane monga momwe amafunikira, kuti akwaniritse kulemera komwe akufuna.Makolala obowola amabwera ndi OD, kapena opangidwa ndi ma helical grooves (zozungulira).Jink amasunga makolala obowola zitsulo za carbon mowolowa manja.Cholinga cha makola a Lead Collar Lead ndikuyika malo ochepa pakati pa pobowola, ndi pafupi ndi bit stabilizer.Iyi ndi njira inanso ya Jcdrill yomwe imakupatsirani kuthekera kosinthira zomwe mukufuna kuchita ngati zovuta zapansi zimabuka.Powonjezera katali kakang'ono pakati pa pang'ono, ndi pafupi ndi kubaya pang'ono, mumalimbitsa BHA wright pang'onopang'ono, kuchepetsa kuyenda pang'ono, motero, kulimbikitsa dzenje lowongoka.Jcdrill amasunga makola owolowa manja a zitsulo zotsogola za kaboni.