Mpweya wokhazikika umatanthawuza mpweya womwe umagwirizana ndi mpweya wabwino wa gasi (PV=nRT) pansi pamikhalidwe yokhazikika (kupanikizika kokhazikika ndi kutentha, mwachitsanzo 1 atm ndi 273.15K). Gasi wokhazikika ndi mawu omwe amagwiritsidwa ntchito pamakampani amafuta. Zinthu zokhazikika ndi miyezo yoyezera yokhala ndi malingaliro ofanana, kukhazikika kwabwino komanso mtengo wolondola. Ali ndi ntchito zoyambira kubereka, kusunga ndi kusamutsa zikhalidwe. Amagwiritsidwa ntchito poyesa kuyeza kwakuthupi, kwamankhwala, kwachilengedwe komanso uinjiniya kuti athe kuyeza zida zoyezera ndi njira zoyezera,