Ukuqonda Amabanga e-Packer V6 kuya ku-V0 (Ingxenye 2): Ukuhlela Ukuhlukaniswa kwe-Downhole “Sealing Guardians” kusukela ku-API 11D1 Standard

Emgqeni wokuvikela ongaphansi komhlaba wokukhiqizwa kukawoyela negesi,abapakiyimishini eyinhloko evimbela ukugeleza koketshezi lokwakheka futhi iqinisekise ukuphepha kwemigodi. Kodwa-ke, izidingo zokusebenza kokuvala ziyahlukahluka kakhulu ezimweni ezahlukene zemithombo: imithombo emincane evamile ejulile idinga kuphela ukuvalwa okuyisisekelo, kuyilapho imithombo emuncu ejulile kakhulu eshisa kakhulu idinga ukuvikelwa kokungavuzi lutho.

I-API 11D1 Standard for Downhole Tools—Packers and Bridge Plugs in the Petroleum and Natural Gas Industry icacisa ngokusobala ukuthi ama-packer grades akhuphuka kancane kancane kusuka ku-V6 kuya ku-V0; uma inani lincane, kulapho izidingo zokusebenza ziqine khona—i-V6 iyizinga lokuqala eliyisisekelo, kuyilapho i-V0 iyizinga lokusebenza eliphakeme, lapho ibanga ngalinye lihambisana nezindinganiso zokuhlola ezicacile kanye nezimo ezisebenzayo.

Namuhla sihlaziya ingqikithi yobuchwepheshe, izimo ezifanele, kanye nezidingo zokuhlola zamaBanga V2, V1, kanye ne-V0 ukuze sikusize ukhethe "umqaphi" ofanele.

Okokuqala, qonda: Kungani i-API 11D1 “ibeka izinga” labapakishi? Ubunzima bemithombo kawoyela negesi bungaphezu kokucatshangwa: imithombo engajulile ingamelana kuphela nokucindezela okungu-10 MPa kanye nokushisa okungu-50°C, kuyilapho imithombo yegesi yolwandle olujulile ingadlula i-100 MPa ngokucindezela, eminye imithombo yegesi ivame ukudlula i-170°C ngokushisa, kanti imithombo emuncu ibhekene nezingozi zokugqwala njalo. Ukungafani kahle kompakishi wezinga eliphansi nomthombo onengcindezi ephezulu (njengokuthi “ukusebenzisa ihhashi elincane ukudonsa inqola esindayo”) kungabangela ukwehluleka kwesivalo kanye nengozi yokuqhumisa; ngokuphambene nalokho, ukusebenzisa abapakishi bezinga eliphezulu kakhulu emithonjeni evamile kuchitha izindleko.

Emithonjeni yokukhiqiza igesi kanye nemithombo yokujova, i-API 11D1 icacisa izidingo zokuhlola ukuqinisekiswa kwamabanga amathathu: i-V2, i-V1, kanye ne-V0.

Ibanga V2: Izinga Lokungena Lokuvala Igesi

Incazelo Yobuchwepheshe Ejwayelekile: I-V2 ifaka ukuhlolwa kokuvala igesi okokuqala; iyizinga eliphansi lokungena labapakishi bemithombo yegesi, kanye nokuhlolwa okuyinhloko okugxile ekuthembekeni kokuvala ezindaweni zokugeleza kwezigaba eziningi.

Izimo Zomthombo Osebenzayo

• Imithombo ejulile (4,000–5,000 m)
• Ingcindezi yokusebenza ≤ 138 MPa (≈ 1,400 kgf/cm²)
• Izinga lokushisa lokusebenza ≤ 177°C
• Okuphakathi: Ukugeleza kwezigaba eziningi ngesilinganiso sikawoyela wegesi (i-GOR) > 500, okuqukethe inani elincane le-H₂S (ingcindezi encane ≤ 0.07 MPa)
• Ukushintshashintsha okukhulu kwengcindezi (isb., imithombo yokukhiqiza ngemva kwemisebenzi evamile yokuqhekeka)

Izimo Ezijwayelekile

Imithombo yegesi evamile esogwini, imithombo yokuthuthukiswa ezindaweni zokugcina amanzi ezine-sulfur ephansi.

Izidingo Zokuhlola

• Kumelwe uqale uphumelele i-V3 test suite ephelele
• Ukuhlolwa kokuvala igesi: Usebenzisa i-nitrogen njengendlela yokuxhumana, bamba ingcindezi ku-80% wengcindezi elinganisiwe imizuzu eyi-15; izinga lokuvuza ≤ amasentimitha ayi-10 ajwayelekile ngomzuzu (sccm)
• Ukuhlolwa komthwalo we-axial okuthuthukisiwe: Sebenzisa amandla e-axial angu-±100 kN, kuhlanganiswe nokuhlolwa komjikelezo wokucindezela
• Umbiko wokuhlolwa kokuvalwa kwegesi okulinganiselwe kumele unikezwe

Ibanga V1: Kuvumelaniswe Nezimo Ezishintsha Kakhulu

Incazelo Yobuchwepheshe: Ngokusekelwe ku-V2, i-V1 ithuthukisa umjikelezo wokushisa kanye nokuhlolwa kokuxhumanisa umthwalo oguquguqukayo; ivumelana nokuguquguquka okukhulu kwesimo sokusebenza ngaphansi kokucindezela okuphezulu/ukushisa okuphezulu, futhi iyisinqumo esiyinhloko semithombo yolwandle olujulile/ejulile kakhulu.

Izimo Zomthombo Osebenzayo

• Imithombo ejulile kakhulu (5,000–6,000 m)
• Ingcindezi yokusebenza ≤ 172 MPa (≈ 1,750 kgf/cm²)
• Izinga lokushisa lokusebenza ≤ 204°C (ibanga lokuguquguquka kwezinga lokushisa ≤ 100°C)
• Okuphakathi: Iqukethe i-H₂S (ingcindezi engaphelele ≤ 0.5 MPa) kanye ne-CO₂ (ingcindezi engaphelele ≤ 8 MPa)
• Imithwalo enamandla enamandla (isb., ukuqhekeka kwemithombo evundlile yegesi ye-shale, ukudlidliza kwentambo yeshubhu yolwandle olujulile)

Izimo Ezijwayelekile

Imithombo evundlile yegesi ye-shale, imithombo kawoyela olwandle olujulile, isigaba sokuthuthukiswa kwemithombo yegesi yesulfure ephezulu.

Izidingo Zokuhlola

• Kumelwe uqale uphumelele i-V2 test suite ephelele
• Ukuhlolwa komjikelezo wokushisa: Jikeleza izikhathi eziyi-10 phakathi kuka--29°C no-204°C, ubambe ingcindezi amahora ama-2 isikhathi ngasinye ngaphandle kokuvuza
• Umjikelezo wokucindezela oguqukayo: Umjikelezo ophindwe ka-500 phakathi kuka-0 no-100% wokucindezela okulinganiselwe, kufaka phakathi ukushaqeka kokucindezela okushukumayo
• Isidingo sezinga lokuvuza kwegesi: ≤ 0.1 sccm Lingisa ukwanda/ukufinyela kwentambo yeshubhu (±50.8 mm) kanye nokuguqulwa kwe-radial; ukusebenza kokuvala akukashintshi

Ibanga V0: Isisekelo Sokuphepha "Somqaphi" Ophelele, Ongenalo Ukuvuza

Incazelo Yobuchwepheshe: I-V0 iyibanga eliphakeme kakhulu ku-API 11D1; ihlanganisa zonke izinto zokuhlola zebanga eliphansi, kanye "nokuvalwa kwegesi okungenayo i-zero-bubble" kanye "nokuhlolwa kokubuyela emuva kwengcindezi" - "umugqa wokugcina wokuzivikela" wezindawo ezimbi kakhulu.

Izimo Zomthombo Osebenzayo

• Imithombo ejulile kakhulu enezinga lokushisa eliphezulu (> 6,000 m)
• Ingcindezi yokusebenza > 103 MPa, izinga lokushisa > 177°C (indawo enokushisa okuphezulu (HPHT) enokucindezela okuphezulu)
• Okuphakathi: Iqukethe i-H₂S enokuhlushwa okuphezulu (ingcindezi engaphelele ≥ 1 MPa) kanye ne-CO₂ (ingcindezi engaphelele ≥ 10 MPa)
• Kudinga ukuvalwa okuhlala njalo (isb., imisebenzi yokuxhuma i-wellbore kanye ne-abandon (P&A)) noma izidingo zokuphepha eziqine kakhulu (isb., imithombo yokulahla imfucuza yenuzi)

Izimo Ezijwayelekile

Imithombo yegesi enesibabule esiningi eSichuan Basin, izindawo zokugcina igesi ezinomfutho ophezulu kakhulu olwandle olujulile, imithombo yegesi eshisayo.

Izidingo Zokuhlola (Izindinganiso Eziqinile Kakhulu)

• Kumelwe uqale uphumelele i-V1 test suite ephelele
• Ukuvalwa kwegesi okungenamabhamuza angenalutho: Usebenzisa i-helium njengendlela yokuxhumana, bamba ingcindezi ngengcindezi elinganiselwe imizuzu eyi-15; akukho ukunqwabelana kwamabhamuza kusilinda esiphothuliwe (izinga lokuvuza lisondela ku-zero)
• Ukuhlolwa kokuguqulwa kwengcindezi: Yenza ukuguquka kwesiqondiso sokucindezela okubili ngengcindezi ephezulu kakhulu, ngaphandle kokwehluleka kwesivalo
• Umjikelezo wokushisa othuthukisiwe: Kuphola ngokushesha kusuka ku-204°C kuya ku-29°C, bamba ingcindezi, bese uphinde uyifudumale; ukuvala kuhlala kusebenza kuyo yonke indawo
• Ubuchwepheshe bokuthola ukuvuza kwe-vacuum kumele busetshenziswe ukuze kutholakale ukuvuza okunekhwalithi ephezulu kanye nobuningi

Izimiso Ezi-3 Eziyinhloko Zokugwema Izingibe Zokukhetha

(1) Khetha okungenani iBanga V2 lemithombo yegesi, okungenani iBanga V1 lemithombo emuncu, futhi kumele ukhethe iBanga V0 lemithombo ye-HPHT;

(2) Thuthukisa izinga ngokusekelwe emithwalweni eguquguqukayo: Emithonjeni enemisebenzi yokuqhekeka/yokwenza i-asidi, thuthukisa izinga lesisekelo ngezinga eli-1 (isb., V2 → V1);

(3) Hlola ukumbozwa kwesitifiketi: Ibanga V0 lingahlanganisa zonke izimo zebanga eliphansi, kodwa qiniseka ukuthi umbiko wokuhlola uhlanganisa imingcele yesimo sendawo eqondiwe (isb. izinga lokushisa, ingcindezi, okuphakathi nendawo).

Isikhumbuzo Esiyinhloko: Ibanga “Ubudlelwano Bokufaka Bonke”

I-API 11D1 icacisa ngokusobala ukuthi ama-packer ebanga eliphezulu amboza ngokuzenzakalelayo ukusebenza kwebanga eliphansi. Isibonelo: Umkhiqizo oqinisekiswe yiBanga V0 ungasetshenziswa ngqo ezimweni zeBanga V1-V6; noma kunjalo, umkhiqizo weBanga V5 akumele usetshenziswe emithonjeni yegesi edinga ukuvalwa kwegesi yeBanga V2.

• Ukukhetha izinga elifanele lokupakisha kubalulekile ekulinganiseni ukuphepha, ukusebenza kahle, kanye nezindleko.

Kuthenjwa ukuthi lokhu kuhumusha okubuyekeziwe kuzokusiza ugweme ukungaqondani kwamazinga, kuqinisekiswe ukuthi indawo ngayinye yomthombo isebenzisa imishini yokuvala imbobo ephansi "ehambelana nomthamo".

Xhumana:UJessie Zhou

Iselula/I-Whatsapp:+0086-18109206861
I-imeyili:energy@landrilltools.com