Nyob rau hauv lub tshav pob ntawm drilling, qhov twg rho tawm cov peev txheej muaj txiaj ntsig los ntawm hauv qab lub ntiaj teb saum npoo av yog ib qho tseem ceeb thiab kev ua haujlwm tsis zoo, lub laum yeeb nkab ua lub luag haujlwm tseem ceeb.
Lub laum yeeb nkab yog ib lub raj seamless tsim los tiv thaiv cov rugged thiab nyuaj tej yam kev mob uas tau ntsib nyob rau hauv drilling kev khiav hauj lwm. Cov txheej txheem tsim seamless no lav lub neej ntev, txo qhov kev pheej hmoo ntawm cov ntsiab lus tsis muaj zog uas yuav ua rau cov yeeb nkab tsis muaj kev ncaj ncees. Lawv tuaj nyob rau hauv ntau qhov ntau thiab tsawg, muaj zog, thiab phab ntsa thicknesses.
Cov yeeb nkab laum feem ntau yog ib feem loj, feem ntau nyob ib ncig ntawm 95%, ntawm qhov hu ua 'xov hlua'. Nyeem rau kom paub ntau ntxiv txog cov hlua tho!
Ib tug yam ntxwv tseem ceeb ntawm ib tug laum yeeb nkab yog nws hollow sab hauv. Qhov tseeb lub laum yeeb nkab yog hollow yog qhov tseem ceeb rau drilling vim nws cia cov kua dej ntws los ntawm cov yeeb nkab.
Cov khoom siv dab tsi yog siv hauv cov kav dej tho?
Cov kav dej laum ua los ntawm cov hlau yog feem ntau. Cov hlau alloy tshwj xeeb siv yog feem ntau muaj zog, qis-alloy steel (HSLA). Hom hlau no tau xaiv rau nws lub peev xwm los tiv thaiv cov xwm txheej hnyav uas tau ntsib thaum lub sij hawm drilling, nrog rau cov kev ntxhov siab siab, corrosion, thiab hnav.
Aluminium kuj qee zaum xaiv, vim nws lub teeb-yim yam ntxwv. Cov kav dej txhuas yog qhov zoo rau cov xwm txheej uas qhov hnyav yog qhov tseem ceeb, xws li cov chaw taws teeb drilling lossis thaum cov khoom siv qhov hnyav yuav tsum tau txiav txim siab.
Qee zaum, cov kav dej laum yuav raug coated nrog cov ntaub ntawv zoo li npib tsib xee lossis lwm yam txheej txheej los tiv thaiv corrosion ntxiv.
Drilling yeeb nkab classification
Tom qab kev tshuaj xyuas, cov kav dej laum tau muab faib ua ib qho ntawm peb chav kawm:
N-Class (Tshiab Yeeb Nkab): Cov no yog cov kav dej uas muaj zog tshaj plaws thiab tshiab tshaj plaws uas muaj, feem ntau nyob rau hauv qhov zoo heev lossis ze-pristine.
P-Class (Premium Pipe): Cov kav dej hwm yog ib kauj ruam ntawm N-Class. Lawv tau ntsib qee qhov hnav tab sis tseem ua haujlwm tau zoo.
C-Class (Siv Pipe): C-Class kav txuas ntxiv rau hauv C-1, C-2, thiab C-3, nyob ntawm lawv qhov xwm txheej. Lawv txawv los ntawm cov kav dej zoo rau cov uas ze rau qhov kawg ntawm lawv lub neej ua haujlwm. Qhov kev ntsuam xyuas tshwj xeeb qhia txog qhov hnav thiab lub neej ntev, ua rau cov kav dej C-Class haum rau kev xav tau tsawg dua cov dej num drilling.
Thaum cov yeeb nkab tsis tuaj yeem siv tau lawm, nws tau cim nrog lub nplhaib liab thiab tshuaj xyuas rau cov khoom seem. Cov kav dej laum tuaj yeem kim, yog li lawv feem ntau rov qab siv dua.
Hom ntawm cov yeeb nkab drilling
Laum cov kav dej sib txawv, haum rau cov kev xav tau tshwj xeeb drilling. Cov hom muaj xws li cov kav dej tsis tu ncua thiab hnyav hnyav, nrog cov kav dej txuas rau kev txhim kho torque kis tau tus mob thiab cov kav dej tshwj xeeb rau kev taw qhia thiab kab rov tav drilling.
Nkag siab txog cov kev sib txawv ntawm cov kav dej drilling no yog qhov tseem ceeb rau kev xaiv cov cuab yeej thiab cov cuab yeej siv los ua kom zoo dua qhov drilling efficiency thiab kev ua tau zoo ntawm ntau yam geological tej yam kev mob.
Tsis tu ncua laum yeeb nkab
Ib lub raj laum li niaj zaus, lossis cov yeeb nkab txheem txheem, tuaj nyob rau hauv ntau qhov ntau thiab tsawg thiab sab nraud. Qhov feem ntau sab nraud txoj kab uas hla rau cov kav dej tsis tu ncua yog kwv yees li ntawm 2 3/8 ntiv tes rau 6 5/8 ntiv tes.
Drilling kav feem ntau yog tsim nyob rau hauv tus qauv ntev, nrog rau cov kev xaiv feem ntau yog 30 ko taw (9 meters) thiab 45 ko taw (14 meters). Ntev ntev tuaj yeem siv rau kev ua haujlwm tob tob.
Ntau cov kav dej tsis tu ncua muaj qhov nruab nrab ntxhov siab lossis cov ntaub qhwv tuab. Cov yam ntxwv no tiv thaiv sab nrauv ntawm cov yeeb nkab laum los ntawm kev sib tsoo tawm tsam cov phab ntsa ntxhib ntawm qhov borehole. Kev ntxhov siab hauv nruab nrab txo qhov hnav thiab kev sib txhuam, ua kom lub neej ntev ntawm cov kav dej laum.
Heavy hnyav laum yeeb nkab
Lub qhov hnyav hnyav laum yeeb nkab (HWDP) yog tus cwj pwm los ntawm nws cov phab ntsa tuab thiab hnyav dua ib ko taw (lb / ft) piv rau cov kav dej li niaj zaus. Cov cwj pwm no ua rau hnyav hnyav tho yeeb nkab tshwj xeeb zoo rau kev thov rau kev thov drilling.
HWDP yog tsim los daws cov teeb meem xws li kev tswj borehole, kev ruaj ntseg hauv qhov dej, thiab qhov chaw muaj kev kub ntxhov hauv qhov tob tob. Nws qhov hnyav ntxiv pab tswj qhov tseeb ntawm qhov drilling.
Vigor lub laum yeeb nkab yog tsim raws li API 5DP tus qauv, peb tuaj yeem muab rau koj nrog API 5DP Qib: E,95(x), 105(G), 135(5) qib rau kev tsim khoom, yog tias koj txaus siab rau Vigor laum kav lossis lwm yam. downhole drilling cov cuab yeej siv hauv kev lag luam roj thiab roj, thov tsis txhob yig tiv tauj peb.
