Ungayikhetha kanjani i-PDC kancane?

1. Ubulukhuni be-rock: umncintiswano wobulukhuni kanye nokuvumelana nezimo

Inkomba Eyisisekelo: Amandla edwala ukumelana noshintsho lwepulasitiki noma ukuklwebheka.

Izinselelo emadwaleni anzima (njenge-granite, i-basalt): Ubulukhuni obuphakeme buholela kalula ekuqothulweni kwamazinyo okusika nokugqoka okukhulu kwe-drill bit. Izici ze-Bits elungele ukumba:

Amazinyo aphezulu wokusika amandla: Ikhwalithi ephezuluPdc umsikiNgokumelana nomthelela oqinile nokuqina okuhle okushisayo kufanele kukhethwe.

Umklamo we-blade obukhulu: uthuthukise amandla wesakhiwo somzimba we-blade ukumelana namandla okuphendula edwala.

I-angle emincane yokusika: ama-angle amabi angemuhle (anjenge-as -1 ° kuya ku -25 °) ajwayele ukwamukelwa, ikakhulukazi "ukuskena" ukunciphisa ubungozi bokuphuka kwe-brittle futhi kuthuthukise ukungena.

I-Gauge Protection Design: vikelabill kancaneububanzi obuvela ekunciphiseni ngokushesha ngenxa yokugqoka okukhulu.

2. I-Rock Abrasiveness: Isivivinyo sokugcina sokuqina

Inkomba Eyisisekelo: Amandla edwala ukugqoka amazinyo okusika kanyebill kancaneumzimba ohlobene kakhulu nokuqukethwe kwamaminerali anzima njenge-quartz).

Ukwakheka kwamatshe amakhulu kakhulu (njenge-Quartz Sandstone, i-granite enamafutha, amatshe agobekile, izingqimba ze-Chert):

Izici ezifaneleDrill bits:

Amazinyo wokusika angenakuvikelwa e-Ultra-egqoke: Sebenzisa izingqimba ze-PDC ngokuqina okuphezulu okushisayo kanye nokuvimbela okunamandla okuqinile.

Isu lokuhlelwa kwamazinyo aminyene: Khulisa inani lamazinyo wokusika ukuze wabelane ngomthwalo wokugqoka wezinyo elilodwa.

Isakhiwo seHydraulic esilungiselelwe kahle: Qinisekisa ukususwa okusebenzayo kwama-cuttings ukugwema ukugqokwa okusheshayo ngenxa yokugaya kwesibili.

Izindawo zokuvikelwa kwe-gauge eziqinisiwe / ze-abrasion

3. Ukwakheka Kwesakhiwo kanye neHomogeneity: Ukuguquguquka kwezinguquko ezinzima

Ukucatshangelwa Okuyisisekelo: Izinga lokuthuthuka kokulala, amalunga, ama-fractures ekwakhekeni kwedwala, kanye nesimo sokushintshana kwezingqinamba ezinzima nezithambile.

Ukwakhiwa okuyinkimbinkimbi (njengezindawo zokuphupha amaphutha, i-shale enamalunga athuthukiswe ngokuqinile, ama-sandstone-mudstone ahlangana):

Izici ezifaneleDrill bits:

Ukumelana nomthelela omkhulu: ukusika amazinyo futhibill kancaneUmzimba kufanele ukwazi ukubekezelela umthwalo wethonya obangelwa izinguquko ezingazelelwe ekwakhekeni.

Idizayini yokuqinabill kancaneezindaweni zokuphuka noma izingqimba ezithambile.

Isakhiwo sokusika esiguquguqukayo

4. Amapharamitha okumba: isigaba sokusebenza

Ukuqondanisa okujwayelekile: Idizayini yebill kancaneidinga ukufanisa uhla olulindelekile lwesisindo ku-bit (WOB) nejubane lokujikeleza (i-RPM).

Amaphuzu asemqoka:

I-WOB ephezulu / i-RPM ephansi: Imvamisa efanelekile ukwakheka kanzima, okudingabill kancaneukuba nesakhiwo esinamandla (njengama-blade abukhulu) kanye namazinyo amabi ase-angle cutting.

I-WOB / ephezulu ye-RPM: Ilungele i-Soft to Medy-Hardformations, Thebill kancaneIngezelelwa ngamazinyo amahle wokusika ama-angle kanye nesakhiwo se-hydraulic esilungele ukususwa kwe-chip.

Ukusebenziseka kwepharamitha: noma ngabe i-drill bit ngokwayo ilungele ukwakheka kwamadwala, amapharamitha okumba okungenangqondo (njengokuphamba ngokweqile kwe-WOB okudla kanzima, ukuhanjiswa okunganele okuholela ekuqothulweni kwezimali) kuzodala ukulimala ngaphambi kwesikhathi noma ukusebenza kahle.

5. Izinhlobo ze-PDC Drill Bit: Ngayinye inobuhlakani bayo

Ukuhlukaniswa Okuyisisekelo: Ngokusho kwemigomo yokuklama kanye nezimo zohlelo lokusebenza, kunezinhlobo eziphambili zeI-PDC Drill bit:

Uhlobo olujwayelekile: I-Suratile, ilungele ukuthamba okuphakathi nendawo ekwakhekeni okuphakathi, okunobunzima.

Uhlobo oluthuthukisiwe / olungamelana nomthelela: Isakhiwo esiqinisiwe (njengama-blades agqinsiwe, ukuvikelwa kwe-gauge okuthuthukisiwe, amazinyo avinjelwe amandla, enzelwe ngokukhethekile ukutholakala kanzima, izindawo zokuphuka noma izindawo ezivelele.

Uhlobo olungamelana kakhulu nokungamelana nalo: Kusetshenziswa izinto zokugqoka ezigqokwa kakhulu, ukuhlelwa kwamazinyo aminyene nokuvikelwa kwe-gauge okuqinisiwe, okubaluleke kakhulu ekwakhiweni okuthe xaxa (njenge-quartz sandstone).

Uhlobo olujulile / olujulile lwe-Ultra-Deep

Uhlobo olukhethekile oluqondile / oluvundlile: Kwenzelwe ukuholwa, ukuqina kanye nekhono lokulwa ne-whirl.

Isiphetho: Ukwenza izinqumo ezinobunzima obukhulu bokuqhathanisa okuqondile