CVD Technology: Ultra-Kev Txhim Kho Nyuaj ntawm Nano- Pob Zeb Diamond
Lub zog tseem ceeb ntawm cov drillingpebbleslus dag nyob rau hauv nano - txheej txheej techology meej. Siv cov txheej txheem kub -filament CVD technology, pab pawg kws tshaj lij tso nyiaj 8μm- tuab nano- pob zeb diamond txheej ntawm cov pob zeb basalt xaiv (10-15mm txoj kab uas hla, compressive zog ＞300MPa). Cov txheej muaj 5-10nm pob zeb diamond nplej, thiab los ntawm optimizing deposition tsis (850℃kub, 5% methane concentration), lub zog sib txuas ntawm cov txheej thiab pebble substrate ncav cuag 80MPa (ntau tshaj qhov kev lag luam tus qauv ntawm 50MPa), tiv thaiv detachment.
Kev ntsuam xyuas Hardness qhia tau hais tias lub txheej muaj Mohs hardness ntawm 9.2, me ntsis qis dua ntuj pob zeb diamond (10) tab sis ho siab dua cov tsoos cemented carbide (8.5). Ntau qhov tseem ceeb, nws qhov hnav tsis kam yog qhov hloov pauv: ib qho kev kuaj ASTM G65 (qhuav xuab zeb roj hmab log txoj kev), tus nqi hnav tsuas yog 0.002mm³ / (N·m)-1/50 ntawm tungsten carbide (0.1mm³ / (N·m)), lub ntsiab lus 50x lifespan txuas ntxiv nyob rau hauv tib lub sijhawm drilling.
Qhov no "natural pebble + txheej txheej" tsim cleverly sib npaug kev ua tau zoo thiab tus nqi: pebble lub ntuj kheej kheej qauv muab cov kev sib txawv ntawm kev ntxhov siab (radial quab yuam sib txawv ＜5% thaum lub sij hawm drilling), zam lub zos tawg; lub nano- pob zeb diamond txheej tsom rau kev txhim kho qhov hnav tsis kam, txuag 80% ntawm pob zeb diamond siv piv rau cov cuab yeej pob zeb diamond sintered tag nrho.
Kev Ntsuas Kev Lag Luam: Lifespan Revolution hauv Shale Gas Drilling
Hauv kev siv cov shale roj sib sib zog nqus drilling (3000-5000m qhov tob), kev ua haujlwm ntawm pob zeb diamond-coated pebble laum hniav tau hloov pauv kev lag luam kev xav. Kev sib piv los ntawm ib lub tuam txhab hluav taws xob tau pom tias:
Cov tsoos cemented carbide cov hniav muaj qhov nruab nrab lifespan ntawm 800 teev nyob rau hauv shale formations (150MPa compressive zog), yuav tsum tau 3-4 me ntsis hloov ib 1000 meters drilled, nrog rau txhua qhov kev hloov yuav siv sij hawm 2-3 teev-kev cuam tshuam kev lag luam tsis tu ncua;
Kev xyaum siv pob zeb diamond-coated pebble hniav ua tiav 4200- teev lifespan nyob rau hauv tib lub tsim, tsuas yog 1 hloov rau 5000 meters drilled. Tsis yog- lub sijhawm ua haujlwm raug txo los ntawm 75%, thiab ib leeg-qhov drilling efficiency tau nce 40%.
Hauv kev xav tau ntau dua granite formations (250MPa compressive zog), qhov zoo dua yog qhov pom tseeb dua: ib txwm me ntsis lifespan plummeted mus rau 300 teev, thaum coated pebble hniav tuav ruaj khov txiav rau 1800 teev, ua qauv qhia adaptability nyob rau hauv ultra- nyuaj pob zeb. Cov kws ua haujlwm hauv teb tau sau tseg: "Qhov kev ruaj ntseg ntawm cov pob zeb coated zoo tshaj qhov kev cia siab- txawm tias thaum ntsib gravel interlayers, lawv tsis nti zoo li cov hniav hlau, txo qhov kev pheej hmoo ntawm cov kav dej daig."
Tus nqi zoo: Tus nqi cuam tshuam -Kev Txhim Kho Kev Ua Haujlwm
Qhov tseeb kev tawg ntawm pob zeb diamond-coated drilling pebbles yog rhuav tshem kev lag luam dab neeg hais tias "ultra- nyuaj sib npaug li tus nqi siab." Tus nqi accounting qhia:
Tus nqi tsim khoom ntawm ib lub pob zeb diamond -coated pebble laum hniav yog $ 85 (xws li $ 5 rau pebble substrate, $ 60 rau CVD txheej, thiab $ 20 rau kev ua haujlwm);
Ib qho sib npaug polycrystalline pob zeb diamond compact (PDC) tus hniav raug nqi $ 350, ua rau tus qub tsuas yog 24% ntawm tus nqi tom kawg.
Kev sib piv cov nqi ntawm lub neej yog qhov tseem ceeb tshaj: rau 5000m shale gas qhov dej, tag nrho cov nqi siv tau siv cov hniav coated pebble yog kwv yees li $ 17,000 (200 cov hniav xav tau), piv rau $ 70,000 rau PDC cov hniav (tib yam kom muaj nuj nqis)- txuag 76%. Tsis tas li ntawd, txo cov zaus hloov pauv ib zaug xwb- ua haujlwm zoo thiab poob sijhawm poob los ntawm ~ $ 50,000, txo nqi tag nrho los ntawm 65%.
Tus nqi no -kev ua tau zoo tau nthuav dav nws txoj kev saws me nyuam hauv kev tshawb nrhiav pob zeb thiab geological drilling. Xyoo 2024, pob zeb diamond-coated pebbles twb ntes tau 8% ntawm lub ntiaj teb no ultra- nyuaj drilling cuab yeej lag luam (nce ntawm 0), nrog rau kev kwv yees kom tshaj 20% los ntawm 2026- los ua qhov kev xaiv tseem ceeb rau nruab nrab mus rau ultra{12}} nyuaj tsim drilling. Raws li ib tus kws tshuaj ntsuam xyuas kev lag luam tau sau tseg: "Nws 'natural + artificial' hybrid qauv tau tig ultra-nyuaj cov cuab yeej drilling los ntawm 'luxuries' rau hauv 'tseem ceeb.'"