Umsebenzi we-sleeve stabilizer

Ukusetyenziswa kwezizinzisi zemikhono ngumlinganiselo obalulekileyo wokuphucula umgangatho wesamente. Injongo yesamente intlu-mbini: okokuqala, ukusebenzisa i-casing ukutywina amacandelo e-wellbore athanda ukudilika, ukuvuza, okanye ezinye iimeko ezinzima, ukubonelela ngesiqinisekiso sokomba okukhuselekileyo nokugudileyo. Okwesibini kukuhlukanisa ngokufanelekileyo i-oyile kunye ne-gas reservoirs ezahlukeneyo, ukuthintela ioli kunye negesi ukuba ingaphumi phezulu okanye ivuza phakathi kweefom, ukubonelela ngeendlela zokuvelisa ioli kunye negesi.

Ngokwenjongo yesamente, imigangatho yokuvavanya umgangatho wesamente inokufumaneka. Okubizwa ngokuba ngumgangatho olungileyo wesamente ngokuyintloko kubhekiselele kwi-casing egxile kwiqula, kunye nesheath yesamente ejikeleze i-casing eyahlula ngokufanelekileyo i-casing ukusuka kudonga lomthombo kunye nokwakheka ukusuka ekubunjweni. Nangona kunjalo, owona mthombo wequla awume nkqo ngokupheleleyo kwaye unokukhokelela kumanqanaba awohlukeneyo otyekelo lwequla. Ngenxa yobukho bokuthambekela komthombo, i-casing ayiyi kugxila ngokwemvelo ngaphakathi komthombo, okukhokelela kubude obahlukeneyo kunye namaqondo oqhagamshelwano kunye nodonga lomthombo. I-gap phakathi kwe-casing kunye ne-wellbore iyahluka ngobukhulu, kwaye xa i-sement slurry idlula kwiindawo ezinezikhewu ezinkulu, i-slurry yasekuqaleni iguqulwa ngokulula; Ngokuchasene noko, kulabo abanezikhewu ezincinci, ngenxa yokumelana nokuhamba okuphezulu, kunzima ukuba i-sement slurry ithathe indawo yodaka lwangaphambili, okubangelwa yinto eyaziwayo eyaziwayo ye-cement slurry channeling. Emva kokuqulunqwa komzila, i-oyile kunye ne-gas reservoir ayinakutywinwa ngokufanelekileyo, kwaye ioli kunye negesi ziya kuhamba kwiindawo ezingenazo i-cement rings.

Ukusebenzisa i-sleeve stabilizer kukubeka embindini i-casing kangangoko kunokwenzeka ngexesha lesamente. Ukufaka isamente ekwalathiswayo okanye amaqula atenxe kakhulu, kubaluleke ngakumbi ukusebenzisa izizinzisi zemikhono. Ukusetyenziswa kwe-casing centralizers akukwazi nje ukuthintela ngempumelelo i-sement slurry ekungeneni kwi-groove, kodwa nokunciphisa umngcipheko wokuhlukana koxinzelelo lwe-casing kunye nokunamathela. Ngenxa yokuba i-stabilizer ibeka i-casing, i-casing ayiyi kubambelela ngokuqinileyo eludongeni lwe-wellbore. Nakumacandelo equla anokungena kakuhle, i-casing ayinakwenzeka ukuba ibambeke ngamaqebengwana odaka awenziwe ngoxinzelelo loxinzelelo kwaye abangele iijam zokomba. I-sleeve stabilizer inokunciphisa iqondo lokugoba le-casing ngaphakathi kwequla (ngokukodwa kwicandelo elikhulu le-wellbore), eliya kunciphisa ukunxitywa kwesixhobo sokubhoboza okanye ezinye izixhobo ze-downhole kwi-casing ngexesha lokugaya emva kokuba i-casing ifakwe. kwaye udlale indima ekukhuseleni i-casing. Ngenxa yokuxhaswa kwe-sleeve stabilizer kwi-casing, indawo yoqhagamshelwano phakathi kwe-casing kunye ne-wellbore iyancitshiswa, okunciphisa ukungqubuzana phakathi kwe-casing kunye ne-wellbore. Oku kunenzuzo ukuba i-casing ithotywe equleni kunye nokuba i-casing ihanjiswe ngexesha le-samente.