Kev kho cryogenic ntawm PDC cutter

PDC cutter yog cov khoom sib xyaw nrog cov khoom zoo heev tau txais los ntawm sintering pob zeb diamond hmoov nrog cemented carbide substrate siv kub thiab siab siab (HTHP) technology.

PDC cutter muaj qhov zoo thermal conductivity, ultra-siab hardness, thiab hnav tsis kam, nrog rau lub zog siab, muaj zog toughness, thiab yooj yim rau vuam.

Cov txheej pob zeb diamond polycrystalline tau txais kev txhawb nqa los ntawm cov cemented carbide substrate, uas tuaj yeem nqus tau qhov cuam tshuam loj thiab tsis txhob muaj kev puas tsuaj loj thaum ua haujlwm. Yog li, PDC tau dav siv rau kev tsim cov cuab yeej txiav, geological thiab roj thiab roj zoo laum khoom, thiab lwm yam cuab yeej hnav-resistant.

Nyob rau hauv cov roj thiab roj drilling teb, ntau tshaj 90% ntawm tag nrho cov drilling footage yog ua tiav los ntawm PDC cov khoom. PDC cov khoom siv feem ntau yog siv rau cov pob zeb mos mus rau nruab nrab nyuaj pob zeb tsim drilling. Thaum nws los txog rau qhov tob drilling, tseem muaj teeb meem ntawm lub neej luv luv thiab ROP qis.

Nyob rau hauv qhov sib sib zog nqus tsim, kev ua haujlwm ntawm PDC laum me ntsis yog hnyav heev. Cov ntaub ntawv tseem ceeb ntawm kev ua tsis tiav ntawm cov khoom sib xyaw muaj xws li macro-fractures xws li cov hniav tawg thiab chipping los ntawm kev cuam tshuam los ntawm cov laum me ntsis tau txais kev cuam tshuam loj, thiab qhov kub hauv qab ntau dhau ua rau cov khoom sib xyaw. Qhov txo qis hnav tsis kam ntawm daim ntawv ua rau thermal hnav ntawm PDC cov ntawv sib xyaw. Cov lus hais saum toj no tsis ua tiav ntawm PDC cov ntawv sib xyaw yuav cuam tshuam rau nws lub neej kev pabcuam thiab kev ua haujlwm zoo drilling.

Cryogenic Treatment yog dab tsi?

Cryogenic kev kho mob yog qhov txuas ntxiv ntawm cov pa cua sov. Nws siv cov kua nitrogen thiab lwm cov tub yees ua kom txias txias rau cov ntaub ntawv txias rau qhov kub thiab txias hauv chav tsev kub (-100 ~ -196 ° C) los txhim kho lawv cov kev ua tau zoo.

Ntau cov kev tshawb fawb uas twb muaj lawm tau pom tias kev kho cryogenic tuaj yeem txhim kho cov khoom zoo ntawm cov hlau, aluminium alloys, thiab lwm yam ntaub ntawv. Tom qab kev kho cryogenic, nag lossis daus-lub zog tshwm sim tshwm sim hauv cov ntaub ntawv no. Cov kev kho cryogenic tuaj yeem txhim kho lub zog flexural, hnav tsis kam, thiab kev ua haujlwm ntawm cov cuab yeej cemented carbide, nrog rau kev txhim kho lub neej zoo. Cov kev tshawb fawb tseem ceeb kuj tau qhia tias kev kho cryogenic tuaj yeem txhim kho qhov zoo li qub compressive lub zog ntawm pob zeb diamond hais, qhov laj thawj tseem ceeb ntawm kev nce hauv lub zog yog qhov hloov pauv ntawm cov kev ntxhov siab nyob hauv lub xeev.

Tab sis, peb puas tuaj yeem txhim kho PDC cutter kev ua tau zoo los ntawm kev kho cryogenic? Lub sijhawm no muaj ob peb yam kev tshawb fawb.

Cov txheej txheem ntawm kev kho cryogenic

Ib txoj kev kho cryogenic rau PDC cutters, kev ua haujlwm yog:

(1) Muab cov PDC cutters nyob rau hauv chav tsev kub rau hauv lub cub tawg cryogenic;

(2) Tig rau ntawm qhov cub kho cua sov, dhau hauv cov kua nitrogen, thiab siv qhov ntsuas kub kom txo tau qhov kub thiab txias hauv qhov cub cua sov rau -30 ℃ ntawm tus nqi ntawm -3 ℃ / min; Thaum qhov kub nce mus txog -30 ℃, nws yuav txo mus rau -1 ℃ / min. Txo rau -120 ℃; Tom qab qhov kub nce mus txog -120 ℃, txo qhov kub ntawm -196 ℃ ntawm qhov ceev ntawm -0.1 ℃ / min;

(3) Khaws cia rau 24 teev ntawm qhov kub ntawm -196 ° C;

(4) Tom qab ntawd nce qhov kub ntawm -120 ° C ntawm tus nqi ntawm 0.1 ° C / min, tom qab ntawd txo nws mus rau -30 ° C ntawm tus nqi ntawm 1 ° C / min, thiab thaum kawg txo nws mus rau chav tsev kub ntawm tus nqi. 3 ° C / min;

(5) Rov ua cov haujlwm saum toj no ob zaug kom ua tiav cov kev kho cryogenic ntawm PDC cutters.

Cryogenically kho PDC cutter thiab tsis kho PDC cutter tau sim rau qhov hnav piv ntawm kev sib tsoo log. Cov txiaj ntsig kev xeem tau pom tias qhov kev coj ua piv txwv yog 3380000 thiab 4800000 raws. Cov txiaj ntsig kev sim tau pom tias tom qab qhov txias txias Qhov sib piv ntawm cov khoom siv txias-kho PDC cutter yog qis dua li ntawm PDC cutter yam tsis muaj kev kho cryogenic.

Tsis tas li ntawd, cov ntaub ntawv uas tau kho thiab tsis kho PDC cov ntaub ntawv sib xyaw tau raug welded rau hauv matrix thiab drilled rau 200m nyob rau hauv tib seem ntawm cov qhov dej uas nyob ib sab nrog tib qhov drilling tsis. Cov neeg kho tshuab drilling ROP ntawm lub laum me ntsis yog nce los ntawm 27.8% siv cryogenically kho PDC piv nrog rau ib qho uas tsis siv cov khoom siv cryogenically kho PDC cutter.

Koj xav li cas txog kev kho cryogenic ntawm PDC cutter? Txais tos kom tso peb cov lus qhia.

Rau PDC cutters, koj tuaj yeem hu rau peb ntawm email ntawm [email protected].