Qhov Volume Fracturing Kev tsim kho ntawm Thawj Coal-pob zeb Gas Zoo tau ua tiav tiav

Zoo Niu 21 yog thawj thiab tob tshaj plaws thee-pob zeb roj ntsug qhov dej hauv Qinghai Oilfield. Nws lub hom phiaj tseem ceeb yog tshawb nrhiav cov txiaj ntsig zoo ntawm kev siv thee-pob zeb roj ntawm Eboliang No. 1 thiab ua tiav kev ua tiav hauv kev tshawb nrhiav cov roj thee-pob zeb hauv Qaidam Basin.

Rau kev sim roj thiab kev ua haujlwm ntawm lub qhov dej no, cov neeg ua haujlwm thev naus laus zis ntawm Lub Tsev Haujlwm Saib Xyuas Kev Tshawb Fawb Roj thiab Roj tau ua "rov qab-rau-rov qab" tsim thiab kev txhim kho kev sib koom ua ke nrog Changqing Oilfield, Lub Chaw Tshawb Fawb ntawm General Institute, thiab Downhole. Lub koom haum ua haujlwm ntawm lub koom haum Engineering, thiab sib koom ua cov kev tshawb fawb raws li kev tshawb fawb ntau. Los ntawm kev ntsuam xyuas qhov zoo ntawm lub pas dej thaum ntxov, nws tau pom tias ib txheej tuab ntawm cov thee seam hauv lub qhov dej no yog me me, cov interlayers nrog sandstone thiab av nkos tau tsim, thiab qhov faus qhov tob tob dua li cov pob zeb sib sib zog nqus hauv Suav teb. Muaj teeb meem hauv kev hloov pauv xws li kev tsim kho siab, tsis ruaj khov thee lub cev qauv, muaj zog plasticity thiab loj pom poob. Cov neeg ua haujlwm kev kawm tau kawm los ntawm kev tsim kho siab heev ntawm kev hloov pauv ntawm cov thee-pob zeb loj hauv Suav teb, ua kom zoo dua qhov kev tsim kho thiab kev puas tsuaj, thiab ua ke nrog cov ntaub ntawv tseem ceeb xws li lub cev tsis muaj zog, roj thiab roj zaub, cementing zoo thiab qhov kev hloov pauv ntawm lub cev. cov blocks thaum ntxov, thiab muab tso rau pem hauv ntej "rov qab composite + siab hloov + ua ke proppant + high-siv xuab zeb ntxiv" ntim fracturing technology tswv yim nyob rau hauv lub hom phiaj, optimized lub hom phiaj thiab ua ke, 70/140 mesh silt xuab zeb tau siv los txo. Kev pom tsis pom nyob rau theem pib, 40-70 mesh ceramsite tau siv los txhawb cov pob txha tawg, thiab 30-50 mesh ceramsite tau siv los sau cov pob txha loj. Ua ke nrog kev txuas ib ntus ntawm cov qhov nruab nrab kom ntseeg tau tias muaj kev hloov pauv zoo ntawm txhua txheej me me thiab tus Tsov tus tw chasing fiber kom txo cov xuab zeb ntau lawm tom qab fracturing, tag nrho cov kev txhawb nqa ntawm lub complex puas network tau tiav, cov xuab zeb ntxiv zog tau txhim kho, conductivity. tau lees tias, cov pob txha pob txha raug nplua txheej vertically, thiab qhov kawg ntawm qhov kawg tau cuam tshuam rau kab rov tav, thiaj li ua rau kom qhov nyuaj ntawm cov pob txha thiab nce qhov ntim ntawm kev hloov pauv. Txhawm rau kom ua tiav kev ua haujlwm zoo thiab cov txiaj ntsig zoo tshaj plaws ntawm kev tsim kho kev puas tsuaj, cov kws tshaj lij ua tib zoo saib xyuas kev tsim kho siab, hloov chaw, kua ntim, xuab zeb piv thiab lwm yam ntaub ntawv, siv cov cuab yeej siv hluav taws xob siab rau kev saib xyuas kev tsim kho, taug qab cov kev sib tsoo dynamics thoob plaws hauv cov txheej txheem. cov kua fracturing nyob rau lub sijhawm tiag tiag, kho qhov kev tsim kho tsis raws sijhawm, thiab thaum kawg ua tiav cov haujlwm ua haujlwm tawg ntawm Well Niu 21.

Kev vam meej ntawm Well Niu 21 tsis tsuas yog qhib qhov xwm txheej tshiab rau kev tshawb nrhiav cov pa roj-pob zeb hauv Eboliang No. 1, tab sis kuj tau muab cov ntaub ntawv tseem ceeb thiab kev paub zoo rau kev tsim kho cov roj pob zeb hauv Qaidam Basin, thiab tseem tau tsim lub hauv paus ruaj khov rau Qinghai Oilfield kom ua tiav kev tshawb nrhiav cov roj thee-pob zeb.