Dab tsi yog qhov tseem ceeb ntawm lub qhov dej taw qhia?Peb lub hauv pauskev taw qhia drillingCov kev ntsuas yog ntsuas qhov tob, lub kaum sab xis inclination, thiab azimuth. Derived parameters suav nrog qhov tseeb ntsug qhov tob (TVD), kab rov tav hloov chaw, thiab kaw azimuth. Kev nkag siab txog cov ntsiab lus tseem ceeb no yog qhov tseem ceeb rau qhov tseebzoo positioningthiab txotsis yog- lub sijhawm tsim khoom (NPT).
Field-Nyob rau hauv Daim Ntawv Qhia Txog Drillers, MWD Engineers, thiab Rig Supervisors
Muaj tseebKev Ntsuas Thaum Drilling (MWD)cov ntaub ntawv yog lub hauv paus ntawm niaj hnubkev tshawb nrhiav zoo. Txhawm rau txhawb nqa ntawm -qhov kev txiav txim siab ntawm qhov chaw- ua, peb tau sau cov lus qhia siv tau no suav nrog txhua yam los ntawmtswj azimuthraudogleg qhov hnyav (DLS)kev suav.
1. Core Parameters rau Zoo Trajectory Analysis
Txhuakev taw qhia drillertso siab rau ob theem ntawm cov ntaub ntawv rauzoo txoj kev tsim:
- Cov kev tshawb fawb tseem ceeb: Ntsuas qhov tob (MD), lub kaum sab xis inclination, thiab azimuth.
- Derived kev npaj tsis: Qhov tseeb ntsug qhov tob (TVD), kab rov tav hloov chaw, kaw qhov deb, pom meej txhais, thiab sab qaum teb / sab hnub tuaj ua haujlwm. Cov no yog qhov tseem ceeb rauphiaj tsawshauvkab rov tav qhov dejthiabExtended ncav cuag Drilling (ERD)tej yaam num.
2. Kaw Azimuth hauv Kev Npaj Zoo
Hauvdirectional zoo tsim, kaw azimuth yog txhais raws li lub clockwise lub kaum sab xis los ntawm qhov tseeb sab qaum teb siv kab mus rau txoj kab uas txuas rau qhov chaw saum npoo thiab qhov projection hauv qab. Nws ua haujlwm raws li qhov tseem ceeb ntawm kev kuaj xyuas zoozoo positioningQhov tseeb thaum lub sijhawm ua haujlwm drilling.
3. Kev Txhais Lus Pom Zoo vs. Kab rov tav Displacement
Feem ntau pom hauvntsug seem plotting, pom meej txhais lus yog qhov projection ntawm kab rov tav hloov mus rau tus tsim azimuth kab. Tsis zoo li cov kab rov tav hloov pauv, pom meej txhais tau zoo lossis tsis zoo. Qhov sib txawv me me ntawm ob qhov txiaj ntsig no qhia tau nrujtswj azimuth, uas yog ib qho tseem ceeb rau navigating complexsiab -angle zoocov profiles.
4. Qhov tseem ceeb ntawm Dogleg Severity (DLS)
Dogleg Severity (DLS)- txhais tau tiasKthiab xam raws liK = / ΔL- ntsuas qhov ceev npaum li caszoo trajectoryhloov kev taw qhia.
Nco tseg: Lub siab DLS tsis tas txhais tau tias muaj kev hloov pauv loj hauv kev xav; nws qhia txog kev hloov pauv tseem ceeb thiab hnyav heevkhoov zoo.
Kev saib xyuas DLS tsis yog - sib tham tau vim nws cuam tshuam ncaj qhatorque thiab luag, nyuajcasing khiav, thiab cuam tshuam tag nrhokev ncaj ncees zoo.
5. Kev daws teeb meem Sudden Azimuth Anomalies hauv MWD
Hauv ib qho tsis ntev los nosiab -angle zookev ua haujlwm, kev hloov pauv sai saiMWD azimuth readingstshwm sim ntawm 5,000 m MD tom qab ncav cuag 70℃inclination. Qhov laj thawj yogSib nqus cuam tshuam, feem ntau txuas rau:
- Magnetization ntawmTsis yog -Magnetic Laum dab tshos (NMDC)
- NMDC ntev tsis txaus los tiv thaivMWD toolslos ntawm BHA magnetism
- Drilling los ntawm hlau- nplua nuj formations
- Tsis zoo centralization ntawm cov cuab yeej nqa khoom sub
- Siab inclination ua ke nrog rau sab qaum teb -south azimuth, amplifyinggeomagnetic cuam tshuam
- Kev txheeb xyuas tam sim ntawm cov teeb meem no tiv thaiv tus nqikev soj ntsuam yuam kevthiab tsis tsim nyogsab sab.
6. Sib Nqus Azimuth Kho kom raug soj ntsuam
Azimuth cov ntaub ntawv los ntawmcov cuab yeej tshawb nrhiav magneticraug xa mus rau magnetic sab qaum teb. Vim lub ntiaj teb magnetic teb hloov los ntawm qhov chaw thiab lub sij hawm, kho kom raug rau sab qaum teb yog qhov yuav tsum tau uazoo positioningkev ua raws cai. Siv kev lag luam- qauv qauv:
Tseeb Azimuth=Sib Nqus Azimuth + Local Magnetic Declination
Qhov kev kho no yog qhov tseem ceeb rau kev tswj xyuas qhov tseeb hauvmulti-paj zookev txhim kho.
7. Lub ntsej muag lub ntsej muag: Cov lus txhais rau Precision Steering
Lub ntsej muag lub ntsej muagtxhais lub orientation ntawm adeflecting cuab yeej (piv txwv li, khoov sub, rotary steerable system) ntawm qhov hauv qab -ib qho tseem ceeb ntawmkev taw qhia kauj. Ob qhov kev siv tshuab siv tau:
- Siab - sab cuab tam lub ntsej muag lub kaum sab xis: Clockwise los ntawm borehole siab sab mus rau kev sib tshuam ntawm cov cuab yeej dav hlau thiab lub dav hlau hauv qab.
- Cov cuab yeej sib nqus lub ntsej muag: Clockwise los ntawm qhov tam sim no borehole azimuth axis mus rau tib txoj kab kev sib tshuam.
Conversion Formula:
Magnetic Tool Face=Siab -Side Tool Face + Bottomhole Azimuth
Optimize koj cov haujlwm: Daim ntawv qhia sai no -reference guide pab streamline ntawm -kev txiav txim siab ntawm qhov chaw- ua thiab txiav NPT ntsig txogkev soj ntsuam kev taw qhiathiabBHA kev ua haujlwm. Yog xav paub ntxivdrilling engineeringkev nkag siab zoo rau cov pab pawg ua haujlwm, ua raws li peb cov kev hloov tshiab. Yog xav paub ntxiv, thov tsis txhob yig tiv tauj pab pawg Vigor kom paub meej ntxiv txog cov khoom lag luam.
