Daim ntawv qhia ua tiav rau Dej Dej, Mining & Geothermal Drilling
Drilling yeeb nkab sticking yog ib qho ntawm cov teeb meem kim tshaj plaws thiab ntxhov siab tshaj plaws hauv kev ua haujlwm drilling. Txawm hais tias koj tab tom khawb lub qhov dej, qhov dej kub hauv qhov dej, lossis ua kev tshawb nrhiav mining, cov yeeb nkab daig tuaj yeem nres tag nrho qhov project tam sim ntawd, nce nqi ua haujlwm, thiab tseem yuam kom koj tso lub qhov.
Yog tias koj nkag siab tias yog vim li cas cov kav dej laum tau daig, koj tuaj yeem txo qis sijhawm thiab zam kev ua tsis tiav kim.⇒
Yog livim li cas laum cov kav dej tau daig, thiab peb tuaj yeem txo qhov kev pheej hmoo li cas?
Phau ntawv qhia no piav qhia txog cov laj thawj hauv cov lus yooj yim, siv tau- zoo meej rau cov pib tshiab thiab cov kws tshaj lij.
1.Qhov "Stuck Pipe" txhais li cas?
Cov yeeb nkab daig yog qhov xwm txheej uas qhovtxoj hlua tho tsis tuaj yeem txav mus los, nqis, lossis tig.
Cov nplaum tuaj yeem yog los ntawm kev tsim siab, kev cuam tshuam ntawm kev siv tshuab, lossis teeb meem kev ua haujlwm.
Ib txoj hlua khi hlua tuaj yeem ua rau:
Nqis downtime
Drill yeeb nkab breakage
Cov khoom siv ploj lawm
Nuv ntses los yog taug kev
Qhov project qeeb heev
Qhov no yog vim li cas thiaj nkag siab qhov ua rau-thiab tiv thaiv lawv- qhov tseem ceeb rau txhua lub tshuab tho.
Teeb meem yeeb nkab poob rau hauvrau qeb loj.
2.1 Sib txawv Sticking (Pressure Sticking)
Qhov no yog ib qho ntawm feem ntau yog vim li cas rau daig yeeb nkab.
Thaum lubhydrostatic siab ntawm cov kua drilling yog siab dua qhov tsim siab, lub laum yeeb nkab tau raug thawb tawm tsam phab ntsa wellbore. Cov yeeb nkab ua "glued" los ntawm lub siab thiab txav tsis tau.
Tej yam cim:
Kev sib hloov ua hnyav
rub quab yuam nce sharply
Cov yeeb nkab tsis tuaj yeem tso tawm txawm tias nqa
Yuav txo qhov kev pheej hmoo li cas:
Khaws cov av nkos nyob rau hauv qhov chaw nyab xeeb
Khaws cov av nkos kom zoo
Txo cov filtrate poob
Txhim kho qhov ntxuav
Cov lus qhia ntsig txog:
2.2 Mechanical Sticking (Pack-tawm / Bridging)
Mechanical sticking tshwm sim thaumcuttings, tawg formations, los yog cov khoom ntim ib ncig ntawm txoj hlua xyaum.
Feem ntau ua rau:
Kev tu lub qhov tsis zoo
Kev ncig tsis txaus
Siab nkag mus
Tsis ruaj khov los yog mos formations
Loj cuttings nyob rau hauv qab
Kev Tiv Thaiv:
Ua kom zoo av viscosity
Xyuas kom muaj zog, tsis tu ncua ncig
Tsis tu ncua ream nruj seem
Tsis txhob drilling ceev heev nyob rau hauv tsis muaj zog formations
2.3 Tus yuam sij-Qhov rooj (Keyway Sticking)
Ntsiab- rooj zaum tshwm sim thaum cov yeeb nkab laum rub tawm tsam dogleg lossis nkhaus hauv lub qhov thiab txiav qhov zawj. Tom qab ntawd, ib qho loj BHA (hauv qab- qhov sib dhos) cov khoom tau nkag rau hauv qhov zawj thiab ua rau daig.
Yuav ua li cas kom txo tau nws:
Ua kom zoo trajectory
Txo cov doglegs ntau dhau
Siv cov stabilizers thiab reamers kom raug
Saib xyuas qhov sib txawv thaum drilling
Kev nyeem ntawv txuas ntxiv:
2.4 Tsim Ntws lossis o
Qee qhov geological formations yog ib txwm tsis ruaj khov:
Av nplaum
Shale
Mos sandstone
Weathered formations
Loose overburden
Cov no tuaj yeem tawg mus rau hauv qhov borehole, ntxiab txoj hlua xyaum.
Dej-sensitive av nplaum tuaj yeemo tuaj, zawm phab ntsa ib ncig ntawm cov yeeb nkab.
Kev Tiv Thaiv:
Siv cov tshuaj inhibitive drilling kua
Khaws cov av viscosity thiab cov khoom
Ream lub sijhawm tsis ruaj khov
Ua kom kev ncig ruaj khov
2.5 Cov khib nyiab lossis cov khoom txawv teb chaws hauv lub qhov dej
Qee lub sij hawm, cov khoom npaj txhij txog ua rau lo:
Cov hniav tawg lawm
Hnav DTH rauj Cheebtsam
Cov khib nyiab hlau
Cov pob zeb loj
Cov cuab yeej yuam kev poob rau hauv lub qhov
Kev Tiv Thaiv:
Tsis tu ncua me ntsis thiab rauj tshuaj xyuas
Ntxuav zoo hauv qab tsis tu ncua
Siv cov hlau nplaum lossis cov pob tawb khib nyiab thaum xav tau
2.6 Drill Pipe Bending, Collapse, lossis Twist -Tawm
Yog hais tias lub laum yeeb nkab yog hnav, overloaded, los yog tsis zoo, nws yuav deform nyob rau hauv lub qhov dej.
Thaum khoov los yog ntog, nws yuav txav tsis tau.
Feem ntau ua rau:
Ntau dhau torque
Po-cov kav dej tsis zoo
Xov hnav los yog galling
Overpulling
Buckling nyob rau hauv siab - cheeb tsam siab
Kev Tiv Thaiv:
Siv cov- cov ntawv pov thawj zoo drill rods
Siv kom raug pleev torque
Tshawb xyuas cov xov tsis tu ncua
3. Cov cim ceeb toom thaum ntxov ntawm kev ua raws
Lub tshuab tho ntse tuaj yeem kuaj pom cov tsos mob ntxov ua ntej cov yeeb nkab yuav daig.
Saib xyuas:
Tsis tu ncua torque
Txo cov txiav rov qab
Ib nrab los yog tam sim ntawd poob ntawm kev ncig
Nce rub thaum mus ncig - tawm
Pump siab hloov pauv
Cov yeeb nkab vibration los yog tsis xwm yeem tig
Cov cim qhia no qhia tias muaj teeb meem loj thiab yuav tsum tau nqis tes ua.
4. Yuav Ua Li Cas Dawb Ib Cov Yeeb Nkab (Techniques teb)
Yog tias qhov tshwm sim tshwm sim, cov neeg ua haujlwm hauv cheeb tsam feem ntau sim:
✔ Kev ua haujlwm siab ntawm cov yeeb nkab
Tsis txhob txhoj puab heev los tiv thaiv kev sib tw -tawm.
✔ Ua kom cov hlab ntsha
Ntxuav lub annulus thiab tshem tawm cov pob txiav.
✔ Pom cov roj nplua nyeem
Diesel, polymer, los yog cov kua dej tshwj xeeb pab txo kev sib txhuam.
✔ Txo cov av nkos
Siv tau rau qhov sib txawv ntawm qhov sib txawv.
✔ Cov cuab yeej Jarring
Downhole los yog hydraulic jars tuaj yeem xa qhov cuam tshuam rau cov yeeb nkab dawb.
✔ Rov qab -reaming
Rov qhib doglegs los yog nruj seem los ntawm reaming upwards.
Yog tias tsis muaj ib txoj hauv kev no ua haujlwm, pab pawg yuav tau hloov mus rau:
cuab yeej nuv ntses, overshots, los yogkev taug kev.
5. Cov kev coj ua zoo tshaj plaws los tiv thaiv cov kav dej khib nyiab
Tiv thaiv cov yeeb nkab daig ib txwm pheej yig dua li kho nws.
⭐ Ua kom ruaj khovav nkoskhoom
Saib xyuas qhov ntom ntom, viscosity, thiab lub zog gel.
⭐ Zam kev nkag mus ntau dhau
ROP nrawm dhau ua rau kev txiav txiav.
⭐ Siv cov cuab yeej drilling txhim khu kev qha
High -cov kav dej zoo, cov khoom siv, cov khoom ruaj khov, thiab dab tshos txo cov kev pheej hmoo.
⭐ Ua kom muaj kev ncig tsis tu ncua
Tsis txhob tso cov twj tso kua mis ntev dhau, tshwj xeeb tshaj yog nyob rau hauv cov qauv muag muag.
⭐ Saib xyuas torque & luag tiam sis
Ib qho txawv txav yog qhov ceeb toom ntxov.
⭐ Xaiv txoj cai rig & compressor
Tsim nyog rub rov qab quab yuam thiab huab cua ntim tau txhim kho kev nyab xeeb drilling.
6. Kev xav zaum kawg
Stuck yeeb nkab yog qhov teeb meem nyuaj, tab sis feem ntau yog tiv thaiv tau.
Nrog rau kev xyaum ua kom zoo, cov cuab yeej txhim khu kev qha, cov av nkos ruaj khov, thiab kev saib xyuas tas li, koj tuaj yeem txo qhov kev pheej hmoo thiab txhim kho kev ua haujlwm ntawm drilling.
hom kev ntseeg siab xaiv
