IADC Tricone Bit Classification Codes System

IADC Tricone Bit Classification Codes System

IADC cov menyuam lub khob hliav qab cov duab qhia me ntsis feem ntau siv los xaiv qhov zoo tshaj plaws rau ib daim ntawv thov. Cov kab kos no muaj cov khoom muaj los ntawm plaub lub tuam txhab ua lag luam ntawm cov khoom. Cov khoom raug cais raws li International Association of Drilling Contractors (IADC) code. Txoj hauj lwm ntawm txhua qhov me me hauv daim duab yog txhais los ntawm peb tus lej thiab ib tus cim. Qhov sib lawv liag ntawm tus lej cim txhais tau tias "Series, Hom thiab Nta" ntawm me ntsis. Cov cim ntxiv txhais cov qauv tsim ntxiv.

IADC CODE REFERENCE

Thawj Tus lej:

1, 2 and 3 designate Steel Tooth Bits, with 1 for soft, 2 for medium and 3 for hard formations.

4, 5, 6, 7 and 8 designate Tungsten Carbide Insert Bits for varying formation hardness with 4 being the softest and 8 the hardest.

Tus lej thib ob:

1, 2, 3 and 4 help further breakdown the formation with1 being the softest and 4 the hardest.Tus lej thib peb:

Tus lej no yuav txheeb xyuas qhov me me raws li hom kabmob / lub foob thiab qhov ntsuas tshwj xeeb hnav tiv thaiv raws li hauv qab no:

1.Standard qhib bearing menyuam ntsis

2.Standard qhib bearing ntsis rau cua drilling xwb

3.Standard qhib bearing ntsis nrog gauge tiv thaiv uas yog txhais raws li

carbide inserts nyob rau hauv pob taws ntawm lub khob hliav qab.

4.Roller kaw cov kabmob me ntsis

5.Roller kaw cov kabmob me me nrog carbide ntxig rau hauv pob taws ntawm lub khob hliav qab.

6.Journal kaw cov kabmob me ntsis

7.Journal kaw bearing me ntsis nrog carbide inserts nyob rau hauv pob taws ntawm lub khob hliav qab.

Plaub Tus lej / Tsab Ntawv Ntxiv:

Cov kab ntawv hauv qab no yog siv rau hauv txoj haujlwm thib plaub los qhia txog cov yam ntxwv ntxiv:

A -- Air application

B -- Tshwj Xeeb Bearing Foob

C -- Center Jet

D -- Deviation tswj

E -- Cov dav hlau txuas ntxiv

G -- Kev tiv thaiv kev ntsuas ntxiv

H -- Kab rov tav daim ntawv thov

J -- Dav Hlau Deflection

L -- Lug Pads

M -- Kev siv lub cev muaj zog

R -- Reinforced welds

S -- Standard hniav ntsis

T -- Ob lub khob hliav qab

W -- Txhim kho cov txheej txheem txiav

X -- Chisel Insert

Y -- Conical Insert

Z -- Lwm cov duab ntxig

Cov ntsiab lus "mos" "nruab nrab" thiab "nyuaj" tsim yog dav heev categorizations ntawm geological strata uas tau nkag mus. Feem ntau, cov pob zeb hauv txhua pawg tuaj yeem piav qhia raws li hauv qab no:

Mos formations yog unconsolidated av nplaum thiab xuab zeb.

Cov no tuaj yeem raug laum nrog qhov qis WOB (nruab nrab ntawm 3000-5000 lbs / hauv lub taub me me) thiab siab RPM (125-250 RPM).

Cov nqi ntws loj yuav tsum tau siv los ntxuav lub qhov kom zoo vim tias ROP yuav tsum siab.

Tus nqi ntws ntau dhau txawm li cas los xij tuaj yeem ua rau muaj kev ntxuav tawm (xyuas cov yeeb nkab ntxhua). Flow tus nqi ntawm 500-800 gpm raug pom zoo.

Raws li nrog txhua hom me me, kev paub hauv zos plays lub luag haujlwm loj hauv kev txiav txim siab ua haujlwm tsis ua haujlwm.

Cov txheej txheem nruab nrab tuaj yeem suav nrog shales, gypsum, shaley txiv qaub, xuab zeb thiab siltstone. 

Feem ntau qhov qis WOB txaus (3000-6000 lbs / hauv me ntsis txoj kab uas hla).

Kev nrawm nrawm tuaj yeem siv rau hauv shales tab sis chalk yuav tsum tau qeeb qeeb (100-150 RPM).

Mos sandstones kuj tuaj yeem drilled nyob rau hauv cov kev txwv no.

Ib zaug ntxiv siab txaus-tus nqi raug pom zoo rau kev ntxuav lub qhov

Cov txheej txheem nyuaj tuaj yeem suav nrog limestone, anhydrite, nyuaj sandstone nrog quartic streaks thiab dolomite.

Cov no yog cov pob zeb uas muaj zog compressive siab thiab muaj cov khoom siv abrasive.

Siab WOB tej zaum yuav xav tau (piv txwv li ntawm 6000-10000 lbs / hauv me ntsis txoj kab uas hla.

Feem ntau qeeb qeeb qeeb yog siv (40-100 RPM) los pab kev sib tsoo / tsoo.

Cov txheej tawv tawv heev ntawm quartzite lossis chert yog qhov zoo tshaj plaws drilled nrog ntxig lossis pob zeb diamond khoom siv ntau dua RPM thiab tsawg dua WOB. Tus nqi ntws feem ntau tsis yog qhov tseem ceeb hauv cov qauv no.