Roj av xuab zeb flushing txoj haujlwm thiab cov kauj ruam ua haujlwm

Txheej txheem cej luam ntawm xuas nrig ntaus xuab zeb

Sand flushing yog txheej txheem ntawm kev siv cov kua dej nrawm nrawm kom tawg cov xuab zeb nyob hauv qab ntawm qhov dej, thiab siv cov kua dej ntws los coj cov xuab zeb dispersed mus rau saum npoo.

1.Requirements rau cov xuab zeb ntxuav dej

(1) Nws muaj qee yam viscosity los xyuas kom muaj peev xwm nqa tau zoo.

(2) Nws muaj qhov ntom ntom kom tiv thaiv kev tawg thiab tawg.

(3) Zoo compatibility, tsis muaj kev puas tsuaj rau lub reservoir.

2. Punching xuab zeb txoj kev

(1) Forward flushing: xuab zeb flushing kua ntws mus rau hauv qab ntawm lub qhov dej raws li cov yeeb nkab hlua thiab rov qab mus rau saum npoo ntawm qhov chaw annular.

(2) Recoil: qhov opposite ntawm zoo recoil.

(3) Rotary sand flushing: Kev siv lub zog los tsav lub cuab yeej tig, thaum lub voj voog lub twj tso kua mis nqa cov xuab zeb, overhaul xuab zeb flushing feem ntau siv txoj kev no.

3. Xuab zeb ntxuav txheej txheem

Cov ntsiab lus thiab cov kev xav tau ntawm cov txheej txheem xuab zeb ntxuav:

(1) Lub phiaj xwm geological ntawm cov xuab zeb ntxuav dej yuav tsum muab cov ntaub ntawv tseeb ntawm cov roj reservoir, cov cuab yeej ntawm lub cev ntawm cov chaw tsim khoom, kev ua haujlwm ntau lawm thiab cov qauv hauv qhov tob.

(2) Txoj kev npaj yuav tsum qhia qhov tob ntawm cov khoom siv dag zog hauv qab, cement nto lossis tso cov cuab yeej, thiab qhov chaw ntawm cov xuab zeb nto thiab qhov xwm txheej ntawm cov khoom poob hauv qhov dej.

(3) Txoj kev npaj yuav tsum muab cov perforated well intervals, tshwj xeeb tshaj yog high-pressure intervals, poob zoo intervals thiab siab qhov tseem ceeb.

(4) Thaum txoj kev npaj yuav tsum tau khaws cia ntawm ib feem ntawm cov xuab zeb kem, qhov tob ntawm xuas nrig ntaus xuab zeb yuav tsum tau qhia.

(5) Rau cov xuab zeb ntxuav ntawm cov xuab zeb tswj kom zoo nyob rau hauv cov yeeb nkab, cov qauv kos duab ntawm cov xuab zeb tswj kav yeeb nkab yuav tsum tau cim.

(6) Nws yuav tsum tau qhia nyob rau hauv txoj kev npaj tiv thaiv av nplaum expansion, wax ball plugging perforation (ceeb toom: tam sim no, kev siv cov pob siv quav ciab cov txheej txheem no tau txwv nyob rau hauv qee qhov chaw roj av, thiab nws yuav tsum tau siv raws li qhov yuav tsum tau ua. ntawm cov roj teb) plugging perforation, mixed gas sand flushing, thiab lwm yam.

Cov kauj ruam ua haujlwm

(1) Kev npaj

Tshawb xyuas lub twj tso kua mis thiab cov kua dej cia, txuas cov kab hauv av, thiab npaj cov dej xuab zeb ntxuav kom txaus.

(2) Xuab zeb nrhiav

Thaum cov xuab zeb ntxuav cov cuab yeej yog 20m deb ntawm cov roj txheej, qhov txo qis yuav tsum tau qeeb. Thaum qhov hnyav poob qis, nws qhia tau hais tias cov xuab zeb nto tau ntsib.

(3) Xuab zeb ntxuav

Qhib lub twj tso kua mis ncig saum toj 3m los ntawm cov xuab zeb nto, thiab cov yeeb nkab qis rau cov xuab zeb yaug kom tsim qhov tob tom qab ua haujlwm li qub. Cov xuab zeb xa tawm yog tsawg dua 0.1%, uas yog suav tias yog tsim nyog xuab zeb ntxuav.

(4) Saib xyuas cov xuab zeb nto

Nqa cov yeeb nkab hlua rau saum cov roj txheej ntau tshaj 30m, nres twj rau 4h, txo cov yeeb nkab hlua kom tshawb xyuas cov xuab zeb nto, thiab saib seb puas yog cov xuab zeb tsim.

(5) Sau cov ntaub ntawv tseem ceeb: cov twj tso kua mis, cov xuab zeb nto tsis, rov qab tsis tau.

(6) faus xuab zeb.