Lub tuam txhab tau cog lus rau kev txhim kho, nce qib thiab kev siv cov khoom siv tshiab hnav-tiv taus, cov thev naus laus zis tshiab thiab cov khoom tshiab, thiab tau tsim kev sib raug zoo nrog kev sib raug zoo nrog harbin boiler, dongguo, dongfang hluav taws xob, wuxi huaguang, Sichuan boiler, thiab lwm yam. tau raug lees paub tias yog "henan xeev kev tshawb fawb thiab thev naus laus zis kev lag luam me thiab nruab nrab" thiab "henan xeev txoj kev tsav tsheb ua lag luam" los ntawm henan xeev department ntawm science thiab technology; "henan xeev bauxite kub khoom engineering tshuab tshawb fawb chaw" lees paub los ntawm henan xeev department ntawm kev lag luam thiab cov ntaub ntawv technology; Lub Kaum Ob Hlis 2019 nws dhau qhov kev sib koom ua ke daim ntawv pov thawj ntawm kev lag luam thiab kev tshaj tawm los ntawm lub teb chaws kev lag luam thiab cov ntaub ntawv thev naus laus zis commission hauv lub Peb Hlis; nws tau lees paub tias yog "tshwj xeeb, tshwj xeeb thiab tshiab" kev lag luam hauv xyoo 2020; nws tau lees paub tias yog lub teb chaws high-tech enterprise hauv 2021.
Vim Li Cas Xaiv Peb
Peb lub Hoobkas
Lub tuam txhab tau cog lus rau kev txhim kho, nce qib thiab kev siv cov khoom siv tshiab hnav-tiv taus, cov thev naus laus zis tshiab thiab cov khoom tshiab, thiab tau tsim kev sib raug zoo nrog kev sib raug zoo nrog harbin boiler, dongguo, dongfang hluav taws xob, wuxi huaguang, Sichuan boiler, thiab lwm yam.
Peb cov khoom
High density thiab siab zog ceramsite proppant, tsawg ntom thiab siab zog ceramsite proppant, nruab nrab ceev siab zog ceramsite proppant, ultra tsawg ceev thiab siab zog ceramsite proppant.
Kev tsim khoom lag luam
Zheng nai petroleum cov khoom fracturing proppant ua raws li cov qauv ntawm fracturing acidification center proppant soj ntsuam kuaj ntawm langfang ceg ntawm Tuam Tshoj petroleum tshawb nrhiav thiab kev loj hlob lub koom haum tshawb fawb, lub American stim-lab, thiab lub British frac-tech laboratory.
Peb daim ntawv pov thawj
Cov khoom ua tau zoo tau mus txog qib thoob ntiaj teb thiab dhau los ntawm American Petroleum Institute apiq1 certification.The Laboratory of Henan zhengnai New Material Co., ltd. Tau dhau lub teb chaws kuaj kev lees paub cnas ntawv pov thawj.
Ceramsite xuab zeb plays lub luag haujlwm tseem ceeb hauv cov txheej txheem roj thiab roj. Nws lub luag haujlwm tseem ceeb yog nkag mus rau pob zeb tawg ua ib qho muab tub lim thaum lub sijhawm tawg los txhawb cov kab nrib pleb los ntawm kev kaw vim kev ntxhov siab tso tawm, yog li tswj xyuas cov khoom siv hluav taws xob siab, tso cai rau cov roj thiab cov roj ntws mus kom zoo, thiab nce ntau lawm.
Lub fracking proppant xuab zeb yog tsim los ntawm kev ua haujlwm zoo nrog cov ntsiab lus siab ntawm bauxite, sib tov qee cov neeg ua haujlwm tshuaj thiab cov neeg ua haujlwm hloov mus ua cov khoom me me ntawm qhov sib txawv, uas yog sintered ntawm qhov kub thiab txias, cov khoom muaj cov yam ntxwv ntawm lub zog siab, qis. crushing tus nqi thiab zoo sphericity nyob rau hauv kaw lub siab. Nws yog cov khoom lag luam zoo rau kev tawg thiab kev hloov kho hauv cov roj thiab roj.
Nyob rau hauv cov txheej txheem ntawm cov roj thiab roj extraction, tom qab fracturing kev kho mob ntawm siab kaw siab thiab tsis tshua muaj permeability mineral deposits, cov kua yuav tsum tau txhaj rau hauv lub pob zeb puag kom tshaj lub pob zeb tawg lub zog ntawm lub tsim, ua rau tawg nyob rau hauv lub pob zeb formations nyob ib ncig ntawm lub wellbore. tsim ib qho channel nrog cov peev txheej ntws siab.
Frac proppant ntau lawm kab yog ib txoj kab ntau lawm uas siv los tsim frac proppant. Petroleum fracturing proppant yog cov khoom siv txhawb nqa uas siv rau hauv cov txheej txheem roj thiab cov nkev extraction. Nws muaj peev xwm tswj tau siab conductivity ntawm cov roj thiab roj qhov dej thiab ua kom cov roj thiab cov nkev ntau lawm.
Ceramsite xuab zeb muaj lub zog tawg thiab feem ntau yog siv rau kev txhawb nqa hauv av hauv cov roj av kom nce cov roj thiab cov pa roj. Nws yog ib qho khoom zoo rau ib puag ncig. Cov khoom no siv ntau yam raw khoom xws li zoo bauxite thiab thee, thiab sintered nrog ceramics.
Petroleum fracturing proppant yog ib yam khoom tseem ceeb uas siv rau hauv cov txheej txheem roj thiab roj extraction. Nws lub luag haujlwm tseem ceeb yog los txhawb cov pob txha pob txha thaum lub sij hawm hydraulic fracturing txheej txheem kom nce cov roj thiab roj qhov dej.
Cov txheej txheem ntawm cov roj av fracturing proppant muaj xws li crushing, batching, sib tsoo, pelletizing, calcination, pulverized thee npaj, tiav cov khoom txias, tshuaj ntsuam thiab ntim. Ntawm lawv, cov khoom siv tseem ceeb yog qib siab bauxite.
Cov kev ua tau zoo ntawm cov roj av fracturing proppant muaj xws li txaus compressive zog thiab hnav tsis kam, tsis tshua muaj txheeb ze ntom, particle loj thiab cov duab raws li cov roj zoo tsim cov cai, thiab zoo tshuaj stability.
Petroleum fracturing proppant nkag mus rau hauv kev tsim nrog rau cov kev daws teeb meem siab thiab ua rau cov kab nrib pleb hauv cov pob zeb tsim los txhawb cov kab nrib pleb los ntawm kev kaw vim kev ntxhov siab tso tawm, yog li tswj xyuas cov khoom siv hluav taws xob siab, tso cai rau cov roj thiab cov roj ntws zoo, thiab nce ntau lawm.
Hydraulic Fracturing Proppant yog dab tsi?
Lub hydraulic fracturing proppant yog cov khoom siv, feem ntau xuab zeb, kho cov xuab zeb los yog cov khoom siv ceramic, tsim los ua kom muaj kev cuam tshuam hydraulic tawg, thaum lub sij hawm los yog tom qab kev kho mob, feem ntau yog rau cov dej tsis zoo. Nws yog ntxiv rau cov kua fracking uas yuav txawv ntawm qhov sib txawv nyob ntawm seb hom fracturing siv, thiab tuaj yeem ua gel, ua npuas ncauj lossis slickwater-raws li. Tsis tas li ntawd, tej zaum yuav muaj unconventional fracking kua. Cov kua dej ua kom muaj kev sib pauv hauv cov khoom siv xws li viscosity, qhov twg cov kua nplaum ntau tuaj yeem nqa tau ntau dua cov khoom siv; lub zog los yog siab xav kom tswj tau ib qho flux twj tso kua mis tus nqi (flow velocity) uas yuav ua tus proppant tsim nyog; ph, ntau yam rheological yam, thiab lwm yam.
Qhov zoo ntawm Hydraulic Fracturing Proppant
Txhim kho cov roj thiab roj rov qab
Hydraulic fracturing proppant plays lub luag haujlwm tseem ceeb hauv kev ua kom rov zoo ntawm cov roj thiab cov khoom siv roj los ntawm cov dej tsis zoo. Los ntawm kev tuav cov pob txha qhib hauv pob zeb matrix, cov khoom siv no ua kom cov dej ntws tsis tu ncua ntawm hydrocarbons mus rau qhov dej rho tawm, ua rau cov nqi ntau lawm thiab lub neej ntev ntev.
Txhim kho cov khoom tsim tau zoo
Kev xaiv kom raug thiab tso chaw ntawm hydraulic fracturing proppant tuaj yeem txhim kho tag nrho cov khoom tsim tau zoo ntawm lub qhov dej. Cov khoom lag luam zoo nrog cov khoom siv zoo tshaj plaws, xws li kev sib tsoo thiab kev ua haujlwm, ua kom muaj txiaj ntsig zoo hauv kev thauj mus los hauv kev sib tsoo, ua rau cov nqi ntws ntau dua thiab txo cov nqi ua haujlwm.
Ntau yam
Hydraulic fracturing proppants tuaj nyob rau hauv ntau yam ntaub ntawv, nrog rau tej yam ntuj tso xuab zeb, tej yam ntuj tso cov ntaub ntawv, thiab resin-coated lwm txoj, tso cai rau cov neeg ua hauj lwm txiav lawv xaiv raws li ib tug reservoir tej yam kev mob, qhov tob tob, thiab xav tau kev ua tau zoo. Qhov kev hloov pauv no ua kom pom cov txiaj ntsig zoo thoob plaws ntau qhov chaw geological thiab cov xwm txheej rho tawm.
Kev xav txog ib puag ncig
Thaum hydraulic fracturing tau ntsib kev tshuaj xyuas txog nws qhov kev cuam tshuam ib puag ncig, kev nce qib hauv kev siv thev naus laus zis tau ua rau txo qee qhov kev txhawj xeeb. Piv txwv li, kev txhim kho ntawm cov khoom sib zog thiab kev ruaj ntseg tau ua rau txo qis kev thauj mus los thiab txo qis cov pa roj carbon monoxide emissions cuam tshuam nrog lawv cov kev xa tawm.
Xuab zeb
Xuab zeb yog cov khoom siv yooj yim tshaj plaws. Xuab zeb yog pheej yig, tab sis ntawm kev ntxhov siab ntau dua nws qhia tau hais tias muaj zog txo qis hauv permeability.
Ceramic hais
Hluav taws xob ceramic spheroids tau piav qhia rau kev siv los ua qhov zoo. Txhua tus spheroid muaj cov tub ntxhais ua los ntawm cov khoom siv raw uas muaj cov ntxhia hauv cov ntxhia, silicium carbide, thiab cov ntawv khi. Cov khoom sib xyaw muaj xws li cov ntxhia nrog cov tshuaj lom neeg ua ke nrog dej los yog sulfur, uas ua rau cov khoom sib xyaw thaum tua.
Bauxite
Sintered bauxite spheres uas muaj silica yog cov khoom siv txheem. Cov khoom muaj qhov loj me ntawm {{0}}.02 txog 0.3 μm. Lawv tau txhim kho kom tiv thaiv kev ntxhov siab los ntawm kev suav nrog 2% zirconia hauv kev sib xyaw ua ntej tua. Ib txheej txheem rau kev tsim cov khoom tsim nyog rau kev siv raws li tus neeg siv khoom yog tus cwj pwm los ntawm cov kauj ruam hauv qab no:
Ib feem zoo yog cais los ntawm ib txwm muaj bauxite. Cov feem zoo yog ib qho uncalcinated ntuj bauxite feem ntau ntawm monomineralic hais ntawm gibbsite, boehmite, thiab kaolinite. Kaolinite sawv cev tsis pub ntau tshaj 25% ntawm tag nrho. Qhov sib cais nplua feem yog pelletized nyob rau hauv lub xub ntiag ntawm dej. Cov pellets tsim tau raug kho kom tshem tawm cov dej.
Cordierite
- Cordierite yog magnesium hlau aluminium cyclosilicate [193]. Feem ntau nws tshwm sim hauv kev sib cuag lossis hauv cheeb tsam metamorphism ntawm cov pob zeb argillaceous. Ib tug propant uas muaj cordierite tau piav qhia, thiab yuav ua li cas siv cov khoom siv no.
- Ib qho cordierite uas muaj -cordierite theem uas ntau dua li -cordierite theem tam sim no hauv cordierite tau piav qhia. Cov theem -cordierite tuaj yeem muaj nyob hauv cov qauv siv lead ua hexagonal thiab theem -cordierite tuaj yeem muaj nyob hauv cov qauv siv lead ua orthorhombic.
Light-weight proppants
- Lub teeb-hnyav propping agents muaj ib lub ntiajteb txawj nqus tsawg dua 2.60 g cm-3. Lawv yog tsim los ntawm kaolin av nplaum thiab nws thiaj li nrog lub teeb-hnyav aggregate. Cov xwm txheej tshwj xeeb ntawm calcination yog tsim nyog.
- Cov ntsiab lus alumina yog nruab nrab ntawm 25% thiab 40%. Ib lub zog siab zog tau piav qhia nrog lub ntiajteb txawj nqus tsawg dua 1.3 g cm-3.
Npog pob nrog fibers
- Nws yog ua tau los tsim nyob rau hauv lub tsim ib tug ntxeem tau pob uas yog ib tug sib tov ntawm fibers thiab proppant. Cov khoom siv fiber ntau yuav yog cov khoom tsim nyog, xws li ntuj lossis hluavtaws organic fibers, iav fibers, ceramic fibers, thiab carbon fibers.
- Lub pob ntxeem tau lim tawm cov khoom tsis xav tau, cov khoom siv, thiab nplua, thaum tseem tso cai rau cov roj ntau lawm. Kev siv cov fibers los ua ib pob ntxeem tau ntawm cov fibers thiab ib qho proppant hauv kev tsim txo cov khoom siv hluav taws xob. Twj cov fibers ua ke nrog cov proppant muab kev txo qis hauv kev sib txhuam quab yuam uas txwv tsis pub siv cov kua dej uas muaj cov khoom siv.
Fracturing proppant yog ib qho tseem ceeb ntawm kev muab tub lim hauv cov txheej txheem fracking. Cov proppant txhawb kev puas tsuaj thiab tiv thaiv lawv qhov kaw los ntawm kev tsim cov roj / roj ntws channel zoo heev. Hom proppant thiab particle yam ntxwv txiav txim siab ntws conductivity ntawm cov pob txha. Qhov muaj zog ntawm cov dej conductivity, qhov siab dua cov roj / roj ntau lawm. Txawm li cas los xij, raws li cov qauv kev xav haum, qhov loj me me thiab qhov sib piv rau cov xuab zeb muaj feem cuam tshuam rau kev sib txhuam. Qhov no ua rau abrasion nyob ze ntawm lub qhov dej thiab cov xuab zeb thaiv hauv qhov tawg.
Nyob rau hauv cov txheej txheem fracturing, zoo tagnrho proppants muaj siab compressive zog thiab ib tug me me crushing tus nqi. Feem ntau cov proppants yog spherical hais nrog ib qho loj me thiab du nto, uas yooj yim rau kev thauj mus los hauv cov kua dej tawg. Thaum tus propant txhawb qhov tawg, nws tsis hnov mob nrog cov kua tsim tawm. Lub hauv paus chiv keeb ntawm tus proppant yog dej xuab zeb, uas yog los ntawm tus dej arkansas nyob rau hauv lub tebchaws United States. Txog thaum nruab nrab -1950s, ntuj quartz xuab zeb, tau siv dav hauv fracking. Tom qab ob peb xyoo lawm, ceramic proppants tau siv nyob rau hauv cov txheej txheem fracturing. Ceramic proppants muaj qhov zoo ntawm kev muaj lub zog siab, nrog rau zoo corrosion kuj thiab roundness. Txij xyoo 1980s txog rau tam sim no, coated, biological, thiab nws tus kheej-suspending proppants txuas ntxiv txhim kho kev ua tau zoo.
Tsim Ceramic Proppants rau Hydraulic Fracturing
Lub hydraulic fracturing los yog "fracking" kev lag luam ebbs thiab ntws nyob rau hauv ib tug indirectly proportional kev sib raug zoo tus nqi ntawm cov roj crude, tab sis qhov tseeb yog hais tias nws tseem yog ib qho tseem ceeb thiab loj hlob kev lag luam. Raws li nrog rau txhua qhov kev lag luam muaj kev sib tw, txoj hauv kev zoo tshaj plaws los tswj kom muaj txiaj ntsig yog txhim kho kev ua tau zoo hauv cov txheej txheem thiab khoom siv. Ib qho ntawm cov khoom siv hauv cov khoom siv siab yog eco-phooj ywg ceramic proppants uas tau qhia nyob rau hauv kev kub siab rau hauv cov pob txha tawg mus rau "prop" qhib pob txha thiab cia cov roj thiab roj ntws los ntawm cov pob txha. Kev txhim kho hauv cov yam ntxwv ntawm cov khoom siv ceramic ua tau zoo txhim kho cov txiaj ntsig ntawm kev ua haujlwm fracking thiab yog li ua lub luag haujlwm tseem ceeb hauv cov txiaj ntsig ntawm kev lag luam fracking.
Kev saib xyuas yuav tsum tau ua thaum tsim cov khoom siv ceramic kom tag nrho cov ntsiab lus ntawm lub cev tau ua kom ntseeg tau tias cov txiaj ntsig siab tshaj plaws thaum siv hauv kev ua haujlwm fracking. Tshwj xeeb, cov khoom siv yuav tsum muaj zog txaus los tuav cov pob txha tawg thaum tseem khaws lawv cov roundness kom ua rau qhov permeability ntawm cov pob txha.
Kev ua tau zoo dua yog ua tiav los ntawm kev tsim cov khoom siv uas muaj qhov sib npaug thiab homogeneous hauv ob qho tib si loj thiab cov duab kom ua kom qhov chaw nruab nrab ntawm qhov sib npaug. Proppants nrog lub siab roundness zoo muab qhov siab tshaj plaws ntawm kev sib cuag thoob plaws hauv hydraulic fractures thaum txhaj rau hauv qhov dej. Lawv kuj yuav tsum tau crush resistant kom tiv thaiv kaw kev ntxhov siab uas ntau tshaj 8, 000 mus rau 10, 000 psi, uas cuam tshuam rau kev xaiv ntawm ceramic dua lwm cov ntaub ntawv xws li silica xuab zeb. Qhov tseem ceeb tshaj plaws, kom muaj txiaj ntsig zoo, cov tuam txhab tsim khoom lag luam yuav tsum ua kom muaj txiaj ntsig zoo thaum tsim khoom ntawm cov khoom siv, uas feem ntau txiav txim siab los ntawm tus nqi ntawm homogeneity hauv thiab thoob plaws txhua pawg. Lub zog, puag ncig, thiab homogeneous proppant settles nyob rau hauv cov kab nrib pleb nrog lub siab tshaj plaws permeability thiab yog li ntawd ua hauj lwm zoo tshaj plaws nyob rau hauv fracking kev khiav hauj lwm raws li nws generates lub siab tshaj plaws tus nqi ntawm ntws, ntau lawm tus nqi, thiab siab tshaj efficiency.
Step-by-Step txheej txheem ntawm Hydraulic Fracturing Proppant
Qhov chaw npaj
Thawj kauj ruam hauv cov txheej txheem hydraulic fracking yog npaj qhov chaw. Qhov no suav nrog kev tshem thaj chaw, teeb tsa cov cuab yeej tsim nyog, thiab ua kom txhua qhov kev ntsuas kev nyab xeeb nyob hauv qhov chaw.
Drilling lub qhov dej
Thaum lub tsev kawm ntawv tau npaj, ib qhov dej yog drilled rau hauv lub ntiaj teb. Qhov dej no feem ntau nce mus txog ntau txhiab ko taw tob, nkag mus rau cov pob zeb tsim cov roj lossis roj nyob. Lub drilling tuaj yeem ua tiav ntsug lossis kab rov tav, nyob ntawm seb cov yam ntxwv ntawm cov roj lossis roj reservoir.
Zoo casing
Tom qab lub qhov dej drilled, nws yog encased nrog steel thiab cement. Lub casing no tseem ceeb heev rau kev tiv thaiv cov peev txheej hauv av. Nws tiv thaiv cov dej fracking thiab hydrocarbons los ntawm kev nkag mus rau ib puag ncig ib puag ncig.
Perforation
Tom qab ntawd, ib rab phom perforating yog qis rau hauv qhov dej mus rau qhov tob uas xav tau. Cov cuab yeej no yog siv los tsim cov qhov hauv lub casing thiab cov cement, muab txoj hauv kev rau cov kua fracking nkag mus rau hauv lub pob zeb tsim.
Txhaj dej fracking
Cov kauj ruam tom ntej yog txhaj cov kua fracking. Cov kua dej no, feem ntau yog dej, xuab zeb, thiab ib feem me me ntawm cov tshuaj, yog pumped rau hauv lub qhov dej ntawm lub siab. Lub siab ntawm cov kua dej muaj zog txaus los tsim cov pob zeb tawg.
Fracture propagation thiab proppant placement
Raws li cov kua tsim cov pob txha tawg hauv pob zeb, cov xuab zeb hauv cov kua fracking, hu ua proppant, nkag mus rau cov pob txha no. Lub luag haujlwm ntawm tus propant yog ua kom cov pob txha tawg qhib thaum qhov kev txhaj tshuaj tso tawm. Qhov no tso cai rau cov pa roj los yog cov roj ntws tawm dawb.
Ntau lawm
Tom qab cov txheej txheem fracking tiav lawm, lub siab nyob rau hauv lub qhov dej yog txo, thiab cov roj los yog roj pib ntws rov qab mus rau saum npoo. Tam sim no lub qhov dej tuaj yeem pib tsim cov roj lossis roj.
Flowback thiab kev tswj cov khib nyiab
Cov kua dej uas ntws rov qab mus rau saum npoo, hu ua flowback, muaj dej thiab ntau yam tshuaj. Cov kua dej no yuav tsum tau tswj xyuas kom zoo los tiv thaiv ib puag ncig. Nws feem ntau yog khaws cia rau hauv cov tso tsheb hlau luam lossis qhov chaw ntawm qhov chaw ua ntej raug kho, rov ua dua, lossis pov tseg.
Lub qhov dej
Ib yam li hydraulic fracking yog siv los nce tus nqi thiab kev ua haujlwm ntawm kev rov qab los rau cov roj thiab roj, nws kuj tuaj yeem siv los txhawb cov dej hauv av. Cov txheej txheem no tau ua tiav tsis yog nyob rau hauv peb xwb, tab sis kuj nyob rau hauv Australia thiab South Africa.
Kev siv mining
Hydraulic fracking kuj muaj cov ntawv thov tsuas yog siv tau los ua kom tswj tau pob zeb caving. Nws kuj tau raug npaj rau kev siv uranium mining uas nws yuav siv los txhaj cov tshuaj uas yuav yaj cov uranium kom nws thiaj li tuaj yeem nkag mus rau saum npoo.
Zog
Hydraulic fracking yog siv nyob rau hauv geothermal systems los txhim kho cua sov rho tawm thiab tsim hluav taws xob.
Pov tseg
Hydraulic fracking yog siv nyob rau hauv cov txheej txheem kho cov pov tseg, pov tseg cov pov tseg los ntawm kev txhaj tshuaj rau hauv cov pob zeb sib sib zog nqus, thiab rau geological sequestration ntawm carbon dioxide.
Kev ntsuas
- Hydraulic fracking tuaj yeem siv los ntawm geologists los ntsuas kev ntxhov siab hauv ntiaj teb.
- Raws li hydraulic fracking thev naus laus zis tau nce siab, nws zoo li yuav siv tau rau hauv txoj kev tsis tau pom dua tam sim no. Ntxiv rau fracking, cov tuam txhab hydraulic fracking ua lag luam nyob rau hauv cov roj & roj kev lag luam tag nrho yuav txuas ntxiv innovate thiab tsim cov txheej txheem tshiab thiab cov txheej txheem los tsim cov khoom siv roj rau lub ntiaj teb kev noj.
Cov ntawv pov thawj
Peb lub Hoobkas
Lub tuam txhab tau cog lus rau kev txhim kho, nce qib thiab kev siv cov khoom siv tshiab hnav-tiv taus, cov thev naus laus zis tshiab thiab cov khoom tshiab, thiab tau tsim kev sib raug zoo nrog kev sib raug zoo nrog harbin boiler, dongguo, dongfang hluav taws xob, wuxi huaguang, Sichuan boiler, thiab lwm yam. tau raug lees paub tias yog "henan xeev kev tshawb fawb thiab thev naus laus zis kev lag luam me thiab nruab nrab" thiab "henan xeev txoj kev tsav tsheb ua lag luam" los ntawm henan xeev department ntawm science thiab technology; "henan xeev bauxite kub khoom engineering tshuab tshawb fawb chaw" lees paub los ntawm henan xeev department ntawm kev lag luam thiab cov ntaub ntawv technology; Lub Kaum Ob Hlis 2019 nws dhau qhov kev sib koom ua ke daim ntawv pov thawj ntawm kev lag luam thiab kev tshaj tawm los ntawm lub teb chaws kev lag luam thiab cov ntaub ntawv thev naus laus zis commission hauv lub Peb Hlis; nws tau lees paub tias yog "tshwj xeeb, tshwj xeeb thiab tshiab" kev lag luam hauv xyoo 2020; nws tau lees paub tias yog lub teb chaws high-tech enterprise hauv 2021.
FAQ
Cim npe nrov: Tuam Tshoj hydraulic fracturing proppant manufacturers, hoobkas
