1.Perforation ceev
Yog tus naj npawb ntawm perforations ib 'meter' ntev. Nyob rau hauv ib txwm muaj xwm txheej, kom tau txais lub peev xwm ntau lawm yuav tsum muaj ntau dua perforation ntom, tab sis nyob rau hauv kev xaiv ntawm perforation ceev, tsis tuaj yeem txwv tsis pub kom nce qhov ceev, yuav tsum xav txog cov hauv qab no:
Qhov loj dhau qhov ntom tuaj yeem ua rau casing puas.
Lub qhov ntom ntom yog loj heev, tus nqi siab;
Qhov ntom ntom ntau dhau yuav ua rau muaj kev ua haujlwm nyuaj rau yav tom ntej.
Thaum lub pore ntom me me heev, qhov nce ntawm cov khoom tsim tau pom tseeb thaum lub qhov pore ntom tau nce. Tab sis thaum lub qhov ntom ntom nce mus rau qee tus nqi, qhov cuam tshuam ntawm qhov ntom ntawm cov khoom lag luam piv tsis pom tseeb. Kev paub qhia tau hais tias thaum lub qhov ceev yog 26 ~ 39 qhov / m, lub peev xwm ntau lawm yuav ua kom tiav ntawm tus nqi qis tshaj.
2. Qhov taub
Nws yog ib qho tseem ceeb parameter qhia qhov loj ntawm perforation. Qhov loj perforation feem ntau yog nyob rau hauv thaj tsam ntawm 5 mus rau 31mm (0.2 txog 1.23in), nyob ntawm seb hom perforation thiab tus nqi ntawm cov nqi. Nrog rau cov mos txwv tib yam, qhov perforation aperture ntawm qhov sib sib zog nqus perforation yog me dua, thiab qhov loj-aperture perforation loj dua. Qhov loj dua cov mos txwv, qhov loj dua qhov perforation aperture.
Lwm yam uas cuam tshuam rau lub aperture yog qhov clearance ntawm lub perforating phom thiab lub casing. Cov nyhuv perforating yog qhov zoo tshaj plaws thaum rab phom perforating nyob hauv nruab nrab ntawm lub qhov dej. Hauv kev ua haujlwm perforating, nws yog ib qho tsim nyog yuav tsum tau ua cov kev ntsuas tsim nyog kom cov phom perforating nyob hauv nruab nrab ntawm lub qhov dej.
3. Phase
Lub kaum sab xis ntawm ob qhov chaw nyob ib sab yog hu ua lub kaum sab xis. Phase kuj muaj txiaj ntsig zoo rau kev tsim khoom. Tam sim no, muaj rau feem ntau siv perforating theem ntawm 0 °, 45 °, 60 °, 90 °, 120 ° thiab 180 °. Hauv kev tsim anisotropic, cov khoom tsim tau nce ntau heev thaum lub kaum sab xis hloov ntawm 180 ° mus rau 0 ° lossis 90 °, tab sis cov khoom tsim tau tsis hloov ntau thaum lub kaum sab xis hloov ntawm 0 ° thiab 90 °.
Ntau qhov kev sim thiab daim ntawv thov teb qhia tau hais tias cov roj zoo muaj qhov ua tau zoo tshaj plaws thaum lub qhov qhov yog 0 °. Thaum lub sij hawm yog 120 ° thiab 180 °, lub peev xwm ntau lawm nyob rau hauv nruab nrab; me ntsis siab dua ntawm 45 ° theem; Thaum lub sij hawm yog 60 ° thiab 90 °, lub peev xwm ntau lawm yog siab tshaj
4. Perforation qhov tob tob
Hais txog qhov ntev ntawm perforation channel. Qhov tob perforation yog txiav txim los ntawm hom perforation nqi qauv thiab tus nqi ntawm cov mos txwv. Sib sib zog nqus hom kev them nqi loj, qhov tob tob tob yog qhov ntev, qhov tob tob yog feem ntau nyob rau hauv thaj tsam ntawm 146 ~ 813mm, thiab qhov nkag mus tob ntxiv nrog rau qhov nce ntawm cov mos txwv. Qhov sib piv ntawm cov roj Wells nce nrog qhov nce ntawm perforation qhov tob, tab sis cov qauv ntawm cov khoom tsim tau nce zuj zus, uas yog, thaum lub qhov tob nce mus rau ib qho txiaj ntsig, qhov kev tsim khoom lag luam yuav tsis nce ntau dhau.
Post lub sij hawm: Sep-12-2023
Room 703 Building B, Greenland center, Hi-tech development Zone Xi'an, Suav teb
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