Kusiyana Pakati pa Drill Pipe ndi Drill Collar

Mapaipi obowola ndi makolala obowola ndi zida zofunika kwambiri pamakampani amafuta. Nkhaniyi ifotokoza za kusiyana kwa zinthu ziwirizi.

Drill Collars

Makolala obowola amakhala pansi pa chingwe chobowola ndipo ndi gawo lalikulu la msonkhano wapansi (BHA). Makhalidwe awo akuluakulu ndi makoma awo okhuthala (nthawi zambiri 38-53mm, omwe ndi okhuthala nthawi 4-6 kuposa makoma a mapaipi obowola), omwe amapereka kulemera kwakukulu komanso kulimba. Kuti pobowola atsogolere ntchito, ma grooves okweza ndi ma grooves amatha kuyika kunja kwa ulusi wamkati wa kolala yobowola.

Dulani Mapaipi

Kubowola mapaipi ndi zitsulo mipope ndi ulusi malekezero, ntchito kulumikiza pamwamba zipangizo pobowola ndi zida pobowola kapena pansi dzenje msonkhano pansi pa chitsime. Cholinga cha mapaipi obowola ndi kunyamula matope obowola kupita kumalo obowola ndikugwira ntchito ndi bowolo kuti akweze, kutsitsa, kapena kuzungulira pobowola pansi. Mapaipi obowola ayenera kupirira kupsinjika kwakukulu kwamkati ndi kunja, kugwedezeka, kupindika, ndi kugwedezeka. Panthawi yochotsa mafuta ndi gasi ndikuyenga, mapaipi obowola amatha kugwiritsidwanso ntchito kangapo. Mapaipi obowola amagawidwa m'mapaipi obowola masikweya, mapaipi obowola nthawi zonse, ndi mapaipi obowola olemetsa.

Maudindo Osiyanasiyana pakuchotsa Mafuta ndi Gasi
Zida ziwirizi zimagwira ntchito zosiyanasiyana pochotsa mafuta ndi gasi. Makola obowola ndi mapaipi achitsulo okhala ndi mipanda yokhuthala omwe amagwiritsidwa ntchito powonjezera kulemera kwa chingwe chobowola, kupereka mphamvu yobowola komanso kupewa kupatuka kwa chitsime. Komano, mapaipi obowola, ndi mapaipi achitsulo okhala ndi mipanda yopyapyala omwe amagwiritsidwa ntchito potumiza torque ndi madzi obowola kuti azitha kuzungulira ndi kubowola pobowola.

Mwachidule, makola obowola, ndi kulemera kwake kwakukulu ndi kulimba, amapereka kulemera kwina ndi kukhazikika kwa chingwe chobowola, pamene mapaipi obowola ali ndi udindo wotumiza mphamvu zamakina ndi kunyamula matope obowola. Zida ziwirizi zimagwira ntchito limodzi kuti zitsimikizire kuti ntchito zobowola zikuyenda bwino.