Casing shine bututun ƙarfe wanda ke tallafawa bangon rijiyoyin mai da iskar gas. Kowace rijiya tana amfani da yadudduka na casing da yawa dangane da zurfin hakowa da ilimin ƙasa. Casing bayan rijiyar don amfani da ciminti zuwa siminti, casing da tubing, bututun rawar soja ya bambanta, ba za a iya sake yin amfani da shi ba, yana cikin amfani da kayan lokaci guda. Don haka, amfani da casing ya kai fiye da kashi 70% na dukkan bututun rijiyar mai. Za a iya raba casing zuwa bututu, cakuɗaɗɗen shimfidar ƙasa, ƙwanƙolin fasaha da murfin mai bisa ga amfani, kuma an nuna tsarin su a cikin rijiyar mai a cikin adadi.
Bututu: wanda aka fi amfani dashi a cikin teku da hamada, don raba ruwan teku da yashi, don tabbatar da hakowa mai santsi, mahimman bayanai na wannan Layer na casing sune: ∮762mm (30in) ×25.4mm, ∮762mm(30in) ×19.06mm.
Rubutun saman: galibi ana amfani da su don hakowa na farko, hako ƙasa mai laushi zuwa ga bene, don rufe wannan ɓangaren ƙasa ba tare da rugujewa ba, ana buƙatar amfani da murfin saman don rufewa. Main bayani dalla-dalla na surface casing: 508mm (20in), 406.4mm (16in), 339.73mm (13-3 / 8in), 273.05mm (10-3 / 4in), 244.48mm (9-5 / 8in), da dai sauransu The zurfin bututu ya dogara da zurfin samuwar taushi, wanda shine gabaɗaya 80 ~ 1500m. Matsinsa na waje da matsi na ciki ba su da girma, gabaɗaya yana amfani da ƙimar ƙarfe K55 ko ƙimar ƙarfe N80.
Technical casing: ana amfani da shi a cikin aikin hakowa na hadaddun samuwar, lokacin da ya ci karo da rugujewar Layer, Layer mai, Layer Gas, Layer na ruwa, Layer na ɓata, Layer man gishiri da sauran sassa masu rikitarwa, yana buƙatar rufewa, in ba haka ba za a iya hakowa. ba za a yi. Wasu rijiyoyin suna da zurfi kuma masu rikitarwa, kuma zurfin rijiyar yana da dubban mita, wannan rijiyar mai zurfi tana buƙatar nau'i-nau'i na kayan aikin fasaha da yawa, kayan aikin injiniya da kuma buƙatun aikin rufewa suna da girma, amfani da darajar karfe kuma ya fi girma, ban da haka. K55, ƙarin N80 da P110 karfe sa, wasu zurfin rijiyoyin kuma suna amfani da Q125 ko mafi girma wanda ba API na karfe sa kamar V150. Babban ƙayyadaddun ƙayyadaddun kayan aikin fasaha sune: 339.73mm (13-3 / 8in), 273.05mm (10-3 / 4in), 244.48mm (9-5 / 8in), 219.08mm (8-5 / 8in), 193.68 mm (7-5/8in), 177.8mm (7in), da dai sauransu.
Rubutun mai: Lokacin da ake hakowa a cikin abin da aka yi niyya (marar mai da iskar gas), wajibi ne a rufe murfin mai da iskar gas da na sama da aka fallasa tare da rumbun mai, kuma bututun mai yana cikin rumbun mai. A cikin kowane nau'i na casing casing, zurfin hakowa shine mafi zurfi, kuma kayan aikin injinsa da buƙatun aikin rufewa suma sune mafi girma. Makin karfe sune K55, N80, P110, Q125, V150 da sauransu. Babban bayani dalla-dalla na tafki casing ne: 177.8mm (7in), 168.28mm (6-5 / 8in), 139.7mm (5-1 / 2in), 127mm (5in), 114.3mm (4-1 / 2in), da dai sauransu .
Lokacin aikawa: Oktoba-13-2023
Dakin 703 Ginin B, Cibiyar Greenland, yankin bunkasa fasahar Hi-tech Xi'an, China
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