Txoj cai thiab kev ua haujlwm ntawm magnetic positioning perforation

Raws li qhov yuav tsum tau ua ntawm txoj kev npaj tsim kho, perforating yog siv cov roj tshwj xeeb zoo perforator txhawm rau nkag mus rau phab ntsa casing thiab cement ring barrier ntawm lub hom phiaj txheej los tsim qhov sib txuas ntawm lub hom phiaj txheej thiab casing wellbore. Yog li ntawd, perforation yog ib kauj ruam tseem ceeb ntawm kev txhim kho oilfield thiab ib qho tseem ceeb ntawm cov roj, roj thiab dej ntau lawm.

1.lub hauv paus ntsiab lus ntawm kev sib nqus positioner

Nws yog paub los ntawm txoj cai ntawm electromagnetic induction hais tias thaum lub hlau nplaum los yog coil nyob rau hauv cov txheeb ze motion, lub magnetic flux ntawm lub magnet.

etic teb nyob ib ncig ntawm lub kauj hloov, cov hlau nplaum sib nqus txiav lub kauj tig thiab ua kom muaj peev xwm induced thiab induced tam sim no, lub kauj tsis yog lub voj, tsis muaj induced tam sim no, tsuas yog induced muaj peev xwm tshwm sim. Lub hauv paus txheej txheem ntawm electromagnetic induction yog sib nqus hlau-txiav coil ntawm magnetic teb nyob ib ncig ntawm lub coil, thiab ua kom cov hlau nplaum-txiav coil, lub sib nqus flux ntawm magnetic teb nyob ib ncig ntawm lub kauj yuav tsum tau hloov. Ntawd yog, cov hlau nplaum thiab cov kauj yog nyob rau hauv kev sib txheeb, tab sis cov qauv ntawm cov hlau nplaum tsis tso cai rau cov hlau nplaum thiab cov kauj nyob rau hauv cov lus sib txheeb, ces qhov sib nqus flux nyob ib ncig ntawm lub kauj yuav tsis hloov, thiab nws yuav tsis tsim. induction muaj peev xwm, yog li ntawd peb tuaj yeem siv lwm hom kev sib nqus flux hloov, uas yog, cia siab rau cov khoom siv txawv teb chaws ferromagnetic hloov. Qhov induced muaj peev xwm generated los ntawm cov khoom ferromagnetic sab nraud cuam tshuam rau nws tus kheej magnetic teb qhia txog cov kev hloov hauv ib puag ncig sab nraud. Yog li ntawd, thaum lub magnetic locator glide los ntawm lub dab tshos nyob rau hauv lub casing, lub magnetic teb kab tis hloov vim qhov kev hloov nyob rau hauv lub thickness ntawm sab nraud ferromagnetic khoom - lub casing phab ntsa, thiaj li hais tias induction muaj peev xwm yog generated los ntawm kev txiav lub coil. Thaum lub magnetic locator teeb liab waveform raug kaw nyob rau saum npoo ntawm qhov ntsuas, nws yuav txiav txim siab tias lub magnetic locator yog dhau los ntawm dab tshos ntawm qhov tob hauv qhov dej. Yog li, nws tuaj yeem koom tes nrog qhov tob ntawm qhov ntsuas hauv av kom ua tiav cov haujlwm perforation positioning.

2.Ua raws li perforating qhov chaw ua haujlwm cov txheej txheem

(1) Tua zoo raws li qhov yuav tsum tau ua ntawm cov qauv tsim.

(2) Npaj cov khoom siv lub taub hau thiab kev teeb tsacov cuab yeej los npaj tau zoo rau kev tiv thaiv blowout.

(3) Ua ntej perforating, lub casing yuav tsum dhaulos ntawm lub qhov dej raws li kev cai, xuab zeb ntxuav lub qhov dej mus rau hauv qab ntawm lub qhov dej.

(4) Casing siab yuav tsum tau kuaj thiab complied nrog ua ntej lub qhov dej tshiab yog perforated.

(5) Qhov tob perforation yuam kev sHall tsis ntau tshaj 0.1m.

(6) Yog tias lub ntsuas perforation tshaj 3m,lub qhov dej tuaj yeem ua tiav tsuas yog tom qab cov yeeb nkab txhuam tau ntxuav.

(7) Lub liner qhov zoo yuav tsum tau kuaj aTom qab perforating, lub extrusion ntim yog ntau tshaj 1m³, lub extrusion siab yog tsawg tshaj li 15MPa, thiab lub sij hawm extrusion tsis tsawg tshaj li 5min.

(8) Thaum lub sij hawm perforating txheej txheem,yuav tsum muaj ib tus neeg tshwj xeeb los saib xyuas lub taub hau zoo, tiv thaiv cov khoom poob, thiab ua tib zoo saib seb puas muaj roj thiab roj zaub. Yog tias pom cov dej ntws tawm, qhov perforation yuav tsum tau nres, cov hlua yeeb nkab yuav tsum tau ntes tam sim ntawd, thiab cov kua kem siab yuav tsum tau kho ua ntej perforating.

(9) Nyob rau hauv tus txheej txheem ntawm cannonball, yogmuaj kev tiv thaiv, tsis txhob nyuaj, yuav tsum tau muab tso rau pem hauv ntej lub cannonball, thiab coj cov kev ntsuas tom qab kawm txog qhov underground qhov teeb meem.

(10) Thaum tag nrho kev tsim khotion txheej txheem, pab pawg neeg ua haujlwm yuav tsum ua haujlwm ze nrog pab pawg perforating kom ua tiav kev nyab xeeb perforation, thiab tsis pub foob pob hluav taws nyob ib puag ncig lub qhov dej.

(11) Perforation cov ntaub ntawv sau:

① Tshuaj xyuas perforation siv cards;

② Ntsuas qhov ceev ntawm tua kua;

③ Txoj kev perforating yog ob rab phom type;

④ Qhib tsim, lub sijhawm zoo, tus lej holes, emissivity;

⑤ Dab tsi tshwm sim tom qab perforation;

⑥ Perforating lub sij hawm thiab khiav kev txiav txim;

⑦ Lwm yam xwm txheej tshwj xeeb.