Kutheni ukhetha i-Sleeve Stabilizer?

Ukusetyenziswa kwezizinzisi zemikhono ngumlinganiselo obalulekileyo wokuphucula umgangatho wesamente. Injongo yesamente intlu-mbini: okokuqala, ukusebenzisa umkhono ukutywina amacandelo omthombo othanda ukudilika, ukuvuza, okanye ezinye iimeko ezinzima, ukubonelela ngesiqinisekiso sokugrumba 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 ikakhulu ubhekiselele kumkhono obekwe embindini womthombo, kunye nesingxobo sesamente esijikeleze umkhono owahlula kakuhle umkhono kudonga lomthombo kunye nokwakheka ukusuka ekubunjweni. Nangona kunjalo, owona mthombo wequla awume nkqo ngokupheleleyo kwaye unokukhokelela kumanqanaba awohlukeneyo otyekelo lwequla. Ngenxa yobukho bokuthambekela komthombo, umkhono awuyi kugxila ngokwemvelo ngaphakathi komthombo, okukhokelela kubude obahlukeneyo kunye namaqondo oqhagamshelwano kunye nodonga lomthombo. I-gap phakathi komkhono 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 umkhono kangangoko kunokwenzeka ngexesha lesamente. Ukufaka isamente ekwalathiswayo okanye amaqula atenxe kakhulu, kubaluleke ngakumbi ukusebenzisa izizinzisi zemikhono. Ukusetyenziswa kwe-sleeve centralizers akukwazi nje ukuthintela ngokufanelekileyo i-sement slurry ekungeneni kwi-groove, kodwa nokunciphisa umngcipheko wokuhluka koxinzelelo lwemikhono kunye nokunamathela. Ngenxa yokuba i-stabilizer ibeka i-sleeve, umkhono awuyi kubambelela ngokuqinileyo eludongeni lomthombo. Nakumacandelo equla anokungena kakuhle, umkhono awunakufane ubambeke ngamaqebengwana odaka akhiwe ngokwahluka koxinzelelo kwaye abangele iijam zokomba.

I-sleeve stabilizer inokunciphisa iqondo lokugoba lomkhono ngaphakathi kwequla (ngokukodwa kwicandelo elikhulu le-wellbore), eliya kunciphisa ukunxiba kwesixhobo sokugaya okanye ezinye izixhobo ze-downhole kwi-sleeve ngexesha lokugaya emva kokuba i-sleeve ifakwe. kwaye udlale indima ekukhuseleni umkhono. Ngenxa yokuxhaswa kwe-sleeve stabilizer kwi-sleeve, indawo yoqhagamshelwano phakathi komkhono kunye ne-wellbore iyancitshiswa, okunciphisa ukungqubuzana phakathi komkhono kunye ne-wellbore. Oku kunenzuzo ukuba umkhono wehliswe equleni kunye nokuba umkhono uhanjiswe ngexesha lesamente.