Kev ua tiav zoo yog ib theem tseem ceeb hauv kev ua haujlwm roj thiab roj, suav nrog kev tsim kom muaj kev sib txuas ruaj khov ntawm lub pas dej thiab lub qhov dej. Cov txheej txheem no cuam tshuam ncaj qha rau kev tsim khoom, kev ua haujlwm ntev, thiab kev ua haujlwm zoo. Kev ua tiav tiav yuav tsum sib npaug ntawm kev sib txuas ntawm lub pas dej, kev tsim kho kom zoo, thiab kev sib cais zonal.
Cov ntsiab lus tseem ceeb thiab cov txheej txheem
Lub qhov dej- tsim tiav yuav tsum ua kom tau raws li ntau lub hom phiaj tseem ceeb: nws yuav tsum ua kom muaj kev sib txuas ntawm lub pas dej kom zoo nrog kev tsim kev puas tsuaj tsawg, muab qhov siab tshaj plaws ntawm cov dej ntws nrog tsawg kawg nkaus tiv thaiv, thiab cais cov roj, roj, thiab dej hauv cheeb tsam kom tiv thaiv kev hla. Nws tseem yuav tsum tswj cov xuab zeb ntau lawm, txhawb kev cuam tshuam yav tom ntej xws li kev txhawb nqa lossis kev nqa khoom, thiab hloov tau rau thermal rov qab los yog kev ua haujlwm sab nraud.
Txoj hauv kev ua tiav thawj zaug suav nrog:
- Perforated tiav:Siv cov nqi zoo li no los tsim txoj hauv kev ntws los ntawm casing thiab cement.
- Qhib Qhov Ua tiav:Tawm hauv seem reservoir uncased.
- Slotted / Screened Liner Ua tiav: Siv ua ntej-drilled los yog slotted kav los txhawb lub qhov dej.
- Gravel Pack tiav: Tso cov xuab zeb (gravel) nyob ib ncig ntawm ib qho screen los ua ib lub siab -permeability lim, suav hais tias yog txoj kev muaj zog tshaj plaws rau kev tswj cov xuab zeb.
Cov cuab yeej tseem ceeb ua kom tiav
Cov ntaub ntawv qhia txog kaum qhov tseem ceeb ntawm cov cuab yeej downhole uas tsim cov caj qaum ntawm txoj hlua ua tiav:
- Packers:Rau zonal cais thiab annular siab tswj. Hom muaj xws li rov qab tau thiab ruaj khov, teeb tsa los ntawm hydraulic, mechanical, lossis wireline txoj kev.
- Downhole Safety Valves (SSSV): Subsurface- tswj li qub uas cia li kaw hauv lub qhov dej thaum muaj xwm txheej ceev xws li hluav taws kub lossis lub taub hau puas.
- Sliding Tsho:Tso cai xaiv kev sib txuas lus ntawm cov tubing thiab annulus rau kev txhaj tshuaj, tshuaj lom neeg, lossis tswj kev ntws.
- Lub txiv mis:Cov seem profiled nyob rau hauv txoj hlua tubing uas muab qhov chaw tsaws rau ntsaws, li qub, lossis ntsuas ntsuas. Cov hom muaj xws li Selective, Top No-Go, thiab Hauv qab Tsis yog-Go.
- Sab Pocket Mandrels:Eccentric sib dhos rau kev txhim kho roj nqa li qub lossis tshuaj txhaj tshuaj li qub.
- Plugs: Siv rau kev ntsuas qhov zoo, ntsuas qhov siab, lossis kaw qhov dej ib ntus -in.
- Gas Lift Valves:Muab tso rau hauv lub hnab tsho sab hauv mandrels los pab txhawb nqa khoom siv los ntawm kev txhaj tshuaj rau hauv cov kwj deg.
- Flow Couplings: Thick-cov pob qij txha muab tso rau saum toj thiab hauv qab qhov kev nyab xeeb li qub kom tiv thaiv kev yaig los ntawm siab - nrawm nrawm.
- Dej Valves:Tso cov kua dej ntws tawm mus rau lub annulus ua ntej rub txoj hlua ua tiav, tiv thaiv cov khoom ntog.
- Scrapers / Wipers:Siv los ntxuav lub casing ID ntawm cov cement, nplai, lossis cov khib nyiab ua ntej siv cov cuab yeej ua tiav.
Xuab zeb tswj: Ib qho tseem ceeb ua kom pom tseeb
Kev tsim cov xuab zeb yog ib qho kev sib tw loj hauv cov dej xuab zeb uas tsis sib xyaw ua ke, ua rau txo qis kev tsim khoom, cov khoom siv yaig, thiab muaj peev xwm ua tsis tau zoo. Lub hauv paus ua rau yog thaum nyob rau hauv -situ stresses thiab luag zog tshaj lub ntuj lub zog ntawm lub pob zeb matrix.
Txoj kev tswj cov xuab zeb tseem ceeb yog:
- Mechanical: Siv cov ntxaij vab tshaus standalone (slotted / xaim- qhwv) lossis, zoo dua,pob zeb pob zeb, qhov twg ib qho screen -casing annulus yog packed nrog me me gravel los ua ib tug ruaj khov, permeable lim.
- Tshuaj:Txhaj tshuaj resins los sib sau ua ke cov xuab zeb los yog tsim cov khoom tsim, permeable "wall" nyob ib ncig ntawm lub qhov dej.
- Xuab zeb Arching:Siv tej yam ntuj tso bridging ntawm xuab zeb nplej ntawm perforations.
Tshwj xeeb ua tiav
- Tight/Fractured Reservoirs: Cov no yuav tsum muaj cov ntaub ntawv muaj zog rau siab -siab stimulations (fracturing/acidizing). Qhib qhov los yog qhov ua tiav liner qhov ua tiav feem ntau nyiam rau cov pob txha pob txha kom muaj kev sib txuas ntawm ntuj tawg, uas tuaj yeem raug puas los ntawm cementing thiab perforating.
- Kab rov tav Wells:Cov kev xaiv tiav (qhib qhov, slotted liner, cemented & perforated liner) nyob ntawm reservoir geology thiab wellbore curvature (Long/Medium/Short Radius). Cov kev sib tw tseem ceeb suav nrog kev khiav liners los ntawm kev tsim cov ntu thiab ua tiav kev sib cais cov cement zoo hauv cov kab rov tav.
Key Terminology & Xov Profiles
Cov ntaub ntawv muab cov ntsiab lus ntawm cov ntsiab lus tseem ceeb xws li Skin Effect, Perforating, Gravel Pack, thiab ntau lub ntsiab lus siab. Nws kuj qhia qhov tseem ceebxov homrau tubulars, uas yog ib qho tseem ceeb rau kev ua hauj lwm teb:
- Casing / Tubing:API threads (BTC, LTC, STC, NU, EUE) thiab hwm kev sib txuas (VAM, Tenaris, Hunting series).
- Drill Pipe:Feem ntau REG (Regular) thiab IF (Internal Flush) xov.
- Cov cuab yeej tshwj xeeb:Kev sib txuas zoo li HYDRILL, TSWP, thiab ACME yog siv rau kev ntxuav cov yeeb nkab, cov cuab yeej milling, thiab cov khoom sib khi.
Artificial Lift rau Kev Sib Tw Zoo
Progressing Cavity Pumps (PCP / Screw Pumps):Qhov zoo tshaj plaws rau cov xuab zeb lossis cov kua dej khov vim lawv qhov kev hloov pauv zoo thiab kev tuav cov kua dej maj mam.
Hluav taws xob Submersible Pumps (ESP): Ntau-theem centrifugal twj siv rau siab- ntim nqa, haum rau ntau qhov chaw zoo.
Kev ua tiav zoo yog kev qhuab qhia, kev sib koom ua ke. Nws txoj kev vam meej yog los ntawm kev xaiv txoj kev thiab cov cuab yeej ua kom haum rau cov yam ntxwv tshwj xeeb ntawm lub pas dej da dej -xws li permeability, xuab zeb muaj peev xwm, lossis pob zeb mechanics-thiab ua raws li lub sijhawm ntev - cov tswv yim tsim khoom. Qhov kev paub hauv paus tseem ceeb no yog qhov tseem ceeb rau kev txhim kho kev ua tau zoo thiab ua kom muaj kev nyab xeeb, txhim khu kev qha zoo. Yog xav paub ntxiv, thov tsis txhob yig tiv tauj pab pawg Vigor kom paub meej ntxiv txog cov khoom lag luam.
