Choke manifold

Bušenje je kompleksan tehnološki proces, često popraćen brojnim problemima, a jedan od njih je i dotok, koji može dovesti do erupcije. Ukoliko se dotok pojavi, tada je potrebno isključiti isplačne pumpe, zatvoriti bušotinu pomoću preventera, iscirkulirati dotok kroz vod za prigušivanje bušotine, te ugušiti bušotinu utiskivanjem otežane isplake u svrhu vraćanja bušotine pod kontrolu. Vod za prigušivanje bušotine vodi prema razdjelniku podesive sapnice, na kojemu se nalaze ventili i podesive sapnice, a služi za smanjenje tlaka dotoka na atmosferski tlak, a nakon toga se fluid, otvaranjem i zatvaranjem ventila, usmjerava kroz tlačne vodove prema isplačnoj jami, vibracijskim sitima, separatoru plina ili baklji, ovisno o potrebi.
Well drilling is a demanding technological process, usually followed by many problems, and one of those problems is the entry of the formation fluid into the wellbore, known as kick, which can eventually lead to blowout. If the kick occurs, it is necessary to shut down the mud pump(s), close the well by activating blowout preventers, circulate the fluid out through choke line, and kill the well by pumping heavy drilling mud into the wellbore. Choke line, connected to the drilling spool, leads to the choke manifold, on which valves and chokes are located, and its purpose is to reduce the fluid pressure to atmospheric one. After that, by opening and closing certain valves on the choke manifold, the fluid is directed through pressure lines either to the mud pit, shakers, gas separator or flare.