Izindaba

Uhlelo Oluqondisa Ukuqondisa Olujikelezayo (i-RSS) luhlelo lokubhoboza oluqondiswayo, ngenkathi intambo yokubhoboza ijikeleza, iqapha futhi ilawule ukujikijela kwepayipi lokubhoboza ngesikhathi sangempela ukuze yenze imisebenzi yokuqondisa, okwenza imisebenzi yokubhoboza ifinyelele ukwakheka okuqondiwe ngokunembe kakhudlwana. Lusetshenziswa kabanzi emithonjeni eqondisa indlela kanye nasemithonjeni evundlile.
I. Ukubhoboza Okuqondiswayo
Ukubhoboza ngokuqondisa kuyindlela yobuchwepheshe yokubhoboza esebenzisa amathuluzi akhethekile okudonsa phansi, amathuluzi okulinganisa, kanye namasu okulawula ngempumelelo indlela yokudonsa phansi, okuvumela i-drill bit ukuthi ifinyelele ekuhlosweni okumiselwe kusengaphambili kokudonsa phansi ngendlela ethile. Empeleni, ukubhoboza ngokuqondisa kuyindlela yokubhoboza i-wellbor elandela i-angle yokuphambuka eklanywe kusengaphambili kanye ne-azimuth ukuze ifinyelele endaweni ekuhlosiwe kuyo.
Izinhlobo zephrofayela eziyinhloko zifaka izigaba ezintathu:

Iphrofayili enezigaba ezimbili: isigaba esiqondile + isigaba sokwakheka
Iphrofayili enezigaba ezintathu: isigaba esiqondile + isigaba esakhiwe + isigaba esithambile
Iphrofayili enezigaba ezinhlanu: isigaba esiphezulu esiqondile + isigaba sokwakheka + isigaba esithambile + isigaba sokwehla + isigaba esiphansi esiqondile

Izinyathelo ezintathu ezibalulekile kubuchwepheshe bokubhoboza obuqondisa indlela:

① Ukusetshenziswa kwe-whipstock (ithuluzi lokuphambukisa) ekubholeni okuqondiswe ngqo
② Ukusetshenziswa kwenjini engaphansi kwembobo ehlanganiswe ne-sub egobile ukuze kubholwe ngendlela eqondile
③ Ukusetshenziswa kwenjini eqondiswayo (injini egobile engaphansi kwembobo) ukubhoboza ngendlela eqondisa izinto

II. Ukubhoboza Okuvundlile

Imithombo evundlile iwuhlobo lomthombo oqondisa izinto. Imithombo yamafutha evamile ivundlile noma iphambukile echibini, kanti ingxenye emfushane idlula echibini. Ngokuphambene nalokho, imithombo evundlile ibholwa ngokuqondile noma iphambukile iye echibini, bese imbobo yomthombo iphenduka cishe iphambukile, igijima ngokuhambisana nechibi bese ibhoboza ingxenye ende kuyo kuze kube yilapho iqedwa. Imithombo enjalo ingadlula echibini amakhulu noma ngisho nangaphezu kwamamitha ayizinkulungwane ezimbili, okwenza kube lula ukubuyisa uwoyela kakhulu. Ukumelana nokugeleza kwamanzi echibini angena echibini lomthombo kuyancipha, okuholela ekutheni amandla okukhiqiza abe phezulu kaningana kunowemithombo evamile evundlile noma ephambukile.

Buyela ku-RSS

I-RSS inikeza izinzuzo ezifana nokungqubuzana okuncishisiwe kanye ne-torque, izinga eliphezulu lokungena (ROP), izindleko eziphansi, isikhathi esifushane sokwakhiwa komthombo, indlela ebushelelezi yokudonsa amanzi, ukulawuleka okulula, kanye nobude besigaba obuvundlile. Iqukethe kakhulu uhlelo olujikelezayo oluqondiswayo olungaphansi, uhlelo lokuqapha nokulawula indawo, kanye nobuchwepheshe bokuxhumana obuhlanganisa lezi zingxenye ezimbili.

I-RSS ingahlukaniswa ngemodi yokusebenza yendlela yayo yokuqondisa ibeukubandlulula okungaguqukifuthiukubandlulula okuguquguqukayoNgokwesimiso sokuqondisa, ingahlukaniswa ibecindezela i-bitfuthiiphuzu-ingxenyeizinhlelo.

① Cindezela i-bit

Lolu hlelo lusebenzisa ngqo amandla aseceleni ku-bit eduze kwe-bit. I-offset stabilizer ye-push-the-bit rotary steerable bottom hole assembly (RSBHA) ibekwa eduze kwe-bit, kanye neziqinisi eziningana ze-drill string ezixhunywe ngokulandelana ngemuva kwayo. Ngesikhathi sokuqondisa, amandla okuphambuka akhiqizwa yithuluzi lokuqondisa elingavamile abangela ukuthi i-RSBHA iphambukise futhi yakhe i-engeli. (Lokhu kuvame ukuphumela esimweni se-wellbore esiqinile, ukuhlanzwa kwemigodi okungekuhle, kanye nokuncipha okusebenzayo kobubanzi be-wellbore, okungukuthi, usayizi we-cross-sectional we-wellbore uba mncane kunobubanzi be-bit.)

② Iphuzu-elincane

Lolu hlelo luqondisa i-bit iye endleleni efiselekayo ye-wellbore ngokugoba intambo yokubhoboza eduze kwe-bit. I-offset stabilizer ye-point-the-bit RSBHA ibekwa phakathi kweziqinisi ezimbili, ifinyelela ukuqondisa okujikelezayo ikakhulukazi nge-engeli ye-bit. (Ikhwalithi engcono ye-wellbore, enobunzima obukhulu be-dogleg obudlula u-15°/30m.)