A cikin yanayin bacewar wurare dabam dabam yayin hakowa, yin amfani da kunnawa da yawa na bawul ɗin kewayawa na iya samun babban taro mai yawa, manyan kayan toshe ɓangarorin da matse siminti ba tare da cirewa daga BHA ba.
Buɗe bawul ɗin kewayawa: kafin aikin toshewa, fara cirewa daga BHA zuwa sashin rijiyar lafiya kuma a jefar da ƙwallon mai aiki. Lokacin da ball mai aiki yana kan kujerar ball, ƙananan famfo zai riƙe matsa lamba a hankali. Lokacin da bambance-bambancen matsa lamba ya kai 0.7-1.5mpa, matsa lamba mai riƙewa ya fi ƙarfin bazara don sa hannun rigar zamewa ya ragu. Lokacin da hannun riga mai zamewa ya gangara zuwa ƙananan iyaka, ramin kewayawa na hannun rigar zamewa yana daidaitawa tare da ramin kewayawa na sama, kuma an buɗe bawul ɗin kewayawa. Ƙara ƙaura zuwa ƙaurawar ginin, yin famfo a cikin slurry mai toshe, kuma slurry ɗin yana shiga cikin ɗigon ɗigo daga ramin kewayawa don toshe kai tsaye. Lokacin da aka dakatar da famfo, hannun rigar zamewa zai sake saitawa a ƙarƙashin ƙarfin bazara, kuma bawul ɗin kewayawa zai rufe ta atomatik, don rage tasirin bututun U-dimbin yawa ko matsalolin sarrafa rijiya. Lokacin da ramin kewayawa yana buƙatar sake buɗewa, ana iya sake sarrafa famfo a hankali.
Rufe bawul ɗin wucewa: bayan kammala aikin toshewa, lokacin da ya zama dole don ci gaba da hakowa, sauke a cikin rufaffiyar kwallaye biyu. Lokacin da ƙwallon da aka rufe ya isa rami ta hanyar wucewa, zai fara ɗaukar matsa lamba kuma a hankali yana ƙara matsa lamba. Lokacin da bambance-bambancen matsa lamba ya kai ga tsarin da aka tsara na ƙwallon ƙwallon da aka kunna (matsayin ƙira shine 10 MPa), ƙwallon da aka kunna yana raguwa kuma ya wuce ta wurin kujerar ƙwallon, kuma ƙwallon da aka kunna da ƙwallon da aka rufe duk sun fada cikin kwandon kwallon. Hannun zamewa yana motsawa sama a ƙarƙashin aikin ƙarfin bazara, ramin kewayawa na hannun riga mai zamewa yana takure tare da ramin kewayawa na haɗin gwiwa na sama, bawul ɗin kewayawa yana rufe kuma ana ci gaba da hakowa.
A cikin aiki da rijiyar kwance, rijiyar shugabanci da kuma karkatar da kyau sosai, amfani da Multiple kunnawa kewaye bawul, wanda zai iya gane manyan ƙaura da kyau flushing da dutse yankan gado flushing, wanda ba kawai inganta da flushing yadda ya dace, amma kuma yana kare downhole kida da kayan aikin. , Idan ya cancanta, buɗe ramin kewayawa don tsaftace bangon ciki na casing ko ƙungiyar BOP.
Lokacin da tsarin kewayawa yana buƙatar rufewa, saka ƙwallaye biyu masu rufaffiyar, matse ƙwallon kulle ta hanyar matsa lamba (matsin ƙira na kulle ball extrusion shine 7MPa), kuma ci gaba da riƙe matsa lamba don rufe tsarin kewayawa.
Lokacin aikawa: Janairu-21-2024
