Iyo cryogenic kurapwa kwePDC cutter

PDC cutter chinhu chakaumbwa chine zvivakwa zvakanakisa zvinowanikwa nekupisa dhaimondi poda ine simende ye carbide substrate uchishandisa tekinoroji yakanyanya uye high pressure (HTHP) tekinoroji.

Iyo PDC yekucheka ine yakakura yekupisa conductivity, yakanyanya-yakanyanya kuomarara, uye kupfeka kuramba, pamwe nesimba repamusoro, kusimba kwepamusoro, uye nyore kubatanidza.

Iyo polycrystalline diamond layer inotsigirwa necemented carbide substrate, iyo inogona kutora yakakura kukanganisa kurodha uye kudzivirira kukuvara kwakanyanya panguva yebasa. Nekudaro, PDC yaishandiswa zvakanyanya kugadzira maturusi ekucheka, geological uye oiri uye gasi tsime rekuchera mabheti, uye mamwe maturusi asingapfeki.

Mumunda wekuchera oiri uye gasi, inopfuura 90% yehuwandu hwekuchera tsoka inopedzwa nePDC bits. PDC mabits anowanzo shandiswa kuchera kune yakapfava kune yepakati hard rock formation. Kana zvasvika pakuchera kwakadzika, kuchine matambudziko ehupenyu hupfupi uye yakaderera ROP.

Mukuumbwa kwakadzika kwakaoma, mamiriro ekushanda ePDC drill bit ane hutsinye. Mafomu makuru ekutadza kwechimedu chinoumbwa anosanganisira macro-fractures akadai semazino akatyoka uye kuputika kunokonzerwa nekukanganisa kunokonzerwa neiyo drill bit inogamuchira hombe yekukanganisa, uye yakawandisa pasi pegomba tembiricha ichikonzera zvidimbu zvakaumbwa. Iyo yakaderedzwa kupfeka kuramba kweshizha kunokonzera kupisa kupfeka kwePDC composite sheet. Kukundikana kwataurwa pamusoro kwePDC composite sheet kuchakanganisa zvakanyanya hupenyu hwayo hwesevhisi uye kugona kuchera.

Chii chinonzi Cryogenic Treatment?

Cryogenic treatment ndeyekuwedzera kwekupisa kwakajairika. Inoshandisa nitrogen yemvura uye mamwe mafiriji semidhiya inotonhorera kutonhora zvinhu kune tembiricha iri pasi pekamuri tembiricha (-100 ~ -196 ° C) kuwedzera kushanda kwavo.

Zvidzidzo zvakawanda zviripo zvakaratidza kuti kurapwa kwe cryogenic kunogona kuvandudza zvakanyanya michina yesimbi, aruminiyamu alloys, uye zvimwe zvinhu. Mushure mekurapa cryogenic, kunaya-kusimbisa chiitiko kunoitika mune izvi zvinhu. Iyo cryogenic kurapwa inogona kuvandudza simba rekuchinja, kupfeka kuramba, uye kucheka mashandiro ecemented carbide maturusi, achiperekedzwa nekuvandudzwa kwehupenyu. Kutsvakurudza kwakakodzera kwakaratidzawo kuti cryogenic kurapwa inogona kuvandudza static compressive simba remadhaimondi particles, chikonzero chikuru chekuwedzera kwesimba ndiko kuchinja kwekusagadzikana kwekunetseka.

Asi, tinogona here kuvandudza mashandiro ePDC cutter kuburikidza nekurapa cryogenic? Panguva ino pane zvishoma zvidzidzo zvakakodzera.

Nzira yekurapa cryogenic

Iyo cryogenic yekurapa nzira yePDC cutters, mashandiro acho ndeaya:

(1) Isa maPDC cutters pane tembiricha yekamuri mune cryogenic kurapwa muchoto;

(2) Batidza cryogenic kurapwa muchoto, pfuura mune mvura nitrogen, uye shandisa tembiricha kutonga kuderedza tembiricha mu cryogenic kurapwa muchoto kusvika -30 ℃ pamwero we -3 ℃/min; kana tembiricha yasvika -30 ℃, inobva yadzikira kusvika -1℃/min. Kuderedza kusvika -120 ℃; mushure mekunge tembiricha yasvika -120 ℃, dzikisa tembiricha kusvika -196 ℃ nekumhanya kwe -0.1 ℃/min;

(3) Ichengete kwemaawa makumi maviri nemana patembiricha ye -196 ° C;

(4) Wobva wawedzera tembiricha kusvika -120°C pamwero we0.1°C/min, wozodzikisira kusvika -30°C pamwero we1°C/min, wozodzideredza kusvika pakamuri tembiricha pamwero. ye3°C/min;

(5) Dzokorora kushanda kwepamusoro kaviri kuti upedze cryogenic kurapwa kwePDC cutters.

Iyo cryogenically yakarapwa PDC cutter uye isina kubatwa PDC cutter yakaedzwa kupfekedzwa kweyero yeguyo rekukuya. Mhedzisiro yebvunzo yakaratidza kuti mareshiyo ekupfeka aive 3380000 uye 4800000 zvakateerana. Mhedzisiro yebvunzo yakaratidza kuti mushure mekutonhora kwakadzika Muyero wekupfeka weiyo inotonhora-inorapwa PDC cutter yakaderera zvakanyanya kupfuura iyo yePDC cutter isina cryogenic kurapwa.

Mukuwedzera, iyo cryogenically yakarapwa uye isina kugadziriswa PDC composite mapepa akaiswa kune matrix uye akaboorwa kwe200m muchikamu chimwe chete chematsime ari pedyo ane maitiro akafanana ekuchera. Mechanical drilling ROP yechibhorani chinowedzerwa ne27.8% uchishandisa cryogenically treatment PDC zvichienzaniswa neasingashandisi cryogenically treatment PDC cutter.

Iwe unofungei nezve cryogenic kurapwa kwePDC cutter? Tikugashirei kutisiira macomments enyu.

Kune PDC cutters, unogona kusvika kwatiri neemail pa [email protected].