Iivalvu zentambo zokubhola ze-API 7-1

Inkcazo emfutshane:

Iivalvu zentambo yokubhola ziyathintela ulwelo ukuba lungaphumi kwintambo yokubhola rhoqo ukuba idrill ikhaba nge-bit off bottom. ILANDRILL inokubonelela ngevalvu yokhuseleko yokuvula epheleleyo (FOSV), ivalvu yeKelly, i-Inside blowout preventer (IBOP), ivalvu yokujonga i-Drop-in, ivalvu yokudada.

Thumela i-imeyile kuthi

Iinkcukacha zeMveliso

Iithegi zeMveliso

Ivalvu yoKhuseleko oluVulekileyo oluPheleleyo (i-FOSV)

Ivalvu yoKhuseleko eVula ngokupheleleyo (isifinyezo seFOSV) yivalvu yokhuseleko yohlobo lwebhola esetyenziselwa ukunqanda ukuhamba komtya wokubhola xa umtya wokubhola ukhutshwa emthonjeni.

I-FOSV yivalvu yokhuseleko evula umzimba wonke kabini, ngoko ke ayiphazamisi ukusebenza kwezixhobo ezifana neebhareli eziphambili okanye izixhobo zophando. Yenzelwe ukuhlatywa kwikhonkco eliphezulu lombhobho wokubhola okanye intambo yetyhubhu kumgangatho werig kwaye ivalwe ngokukhawuleza ukuba umthombo ukhaba.

Xa uodola nceda ucacise:
Uqhagamshelo.
I-OD kunye ne-ID
Uxinzelelo Lokusebenza: 5,000 / 10,000 / 15,000 PSI;

Ivalvu kaKelly

Ivalvu kaKelly ikwabizwa ngokuba yiKelly cock okanye iGrey valve. Yivalvu yokulawula ngesandla kwinkqubo yokujikeleza ngentambo yokubhola kwaye yenye yezixhobo ezisebenzayo zokuthintela ukuqhushumba. Ivalvu kaKelly yahlulwe yaba yiUpper Kelly Valve kunye neLower Kelly Valve. I-Upper Kelly Valve iqhagamshelwe kwi-swivel sub kunye neKelly. Ivalvu kaKelly esezantsi iqhagamshelwe kwisiphelo esisezantsi sikaKelly kunye nomphezulu wepayipi yokubhola okanye isiphelo esisezantsi sikaKelly save sub. Ijikeleza isitshixo sevalvu yokhuseleko evulekileyo ngokupheleleyo ngama-90° ukuze ivuleke kwaye ivale. Kwinkqubo yokubhola, ukuze kuthintelwe iingozi ezinobungozi, iivalvu zikaKelly kufuneka ziqhagamshelwe kuzo zombini iziphelo zikaKelly ukuthintela ukulahleka kwe-drilling flid kunye nokuqhushumba. Ivalvu kaKelly cock, eyivalvu yebhola eqhutywa ngesandla eqhutywa kwi-ID yentambo yokubhola, yenye yezixhobo ezisebenzayo zokuthintela ukuqhushumba.

I-kelly cock yahlulwe yaba yi-upper kelly cock valve kunye ne-lower kelly cock.
I-kelly cock ephezulu iqhagamshelwe nesiphelo esisezantsi se-swivel kunye nesiphelo esingaphezulu se-kelly. I-kelly cock esezantsi iqhagamshelwe nesiphelo esingaphezulu se-drill pipe kunye nesiphelo esisezantsi se-kelly okanye iqhagamshelwe phakathi kwesiphelo esisezantsi se-kelly saver subs.
I-kelly cock inokusebenza okulula, i-kelly cock ingavulwa okanye ivalwe ngokuguqula i-operation spanner ekhethekileyo kwi-90 degrees ngokwendlela eboniswa ngayo. Ngexesha lokusebenza kokubhola, i-kelly cock kufuneka iqhagamshelwe kwisiphelo esiphezulu nesezantsi se-kelly.

Xa uodola nceda ucacise:
Uhlobo oluPhezulu okanye oluPhantsi;
Isixhobo se-OD;
Uxinzelelo Lokusebenza: 5,000 / 10,000 / 15,000 PSI;
Uqhagamshelo lwezixhobo.

Ngaphakathi kwi-BOP

Isithinteli sokuqhushumba ngaphakathi (Inside BOP) sisixhobo esikhethekileyo, esinokudwetshwa ngemigca kwi-BOP ukuze sidityaniswe nezixhobo zokugrumba ezongezelelweyo ngokukhawuleza, xa ukuqhushumba kwenzeka ngexesha lokuphakamisa izixhobo zokugrumba, isithinteli sokuqhushumba ngaphakathi sineengenelo ezininzi ezifana noxinzelelo oluphezulu, ukutywinwa okuthembekileyo, ukulula ukusebenza, ukutshintsha ngokukhawuleza njalo njalo.

Xa uodola nceda ucacise:
Isixhobo se-OD;
Uxinzelelo Lokusebenza: 5,000 / 10,000 / 15,000 PSI;
Uqhagamshelo lwezixhobo.

Ngexesha lokukhupha isixhobo sokugrumba emngxunyeni, ukuqhushumba kwenzeka ngenxa yesiphumo sokufunxa. Xa ulwelo, ioyile, umphunga okanye amanzi ephuma kumbhobho wokugrumba okhutshiweyo, umthinteli wokuqhushumba wangaphakathi kufuneka uqhagamshelwe ngokukhawuleza kumbhobho wokugrumba. Umthinteli wokuqhushumba wangaphakathi unokuqhagamshelwa lula kumbhobho wokugrumba ngenxa yokuba ivalvu yomthinteli wokuqhushumba ikwindawo evulekileyo kwaye ulwelo olukwindawo esezantsi lunokuphuma kumthinteli wokuqhushumba wangaphakathi lukwindawo evulekileyo kwaye ulwelo olukwindawo esezantsi lunokuphuma kumthinteli wokuqhushumba wangaphakathi. Intonga yokunceda ingavala ivalvu ngokukrufula ibolt yokutshixa, okwangoku, umthinteli wokuqhushumba wangaphakathi uvumela ulwelo ukuba lupompelwe emngxunyeni ukusuka phezulu ukuya ezantsi, kodwa ulwelo olukwindawo engaphakathi alukwazi ukuqubha kwintambo yokugrumba kwaye ekugqibeleni luphume kumthinteli wokuqhushumba wangaphakathi. Emva koko injongo yeveni yokuthintela ukuqhushumba ingafezekiswa ngala manyathelo alandelayo, Khupha i-sub yokunceda ilawule ulwelo kwaye uqalise ukujikeleza kwepompo.

Ivalvu yokujonga ukungena

Iivalvu zokujonga ukuba amanzi angena njani zithintela ukubuya kwamanzi ngexesha lokukhaba kwaye zifanelekile kwiimeko ezininzi zokubhola apho ukubuya kwamanzi ngentambo yokubhola kuyingozi kwaye ukusebenza okuqhelekileyo kufuna iingenelo ze-full-bore sub. Ngokuthintela ukunyuka kwamanzi ngepayipi yokubhola, kodwa ukuvumela ulwelo ukuba lupompelwe ezantsi ukuze lujikeleze iqula, iivalvu zibonelela umbhobho ngeendlela zokulawula uxinzelelo lwepayipi yokubhola xa kufuneka, ziphucule kakhulu kwaye zenze lula ulawulo lwequla.

Xa kuza kubakho ukuqhushumba, uqhagamshelo lwentambo ye-kelly luyakhutshwa ngoko nangoko kwaye lufake ivalvu yokujonga ukuba ikwipayipi yokubhola ize iphonswe ezantsi ukuya kwindawo efunekayo. Ngaloo ndlela ukuqhushumba kunokuthintelwa.

Xa uodola nceda ucacise
Imbobo encinci kwintambo yokubhola apho kufuneka ivalvu yokujonga idlule khona.
Ubungakanani kunye nohlobo loqhagamshelo lwe-Landing sub.
Ububanzi obungaphandle beendawo zokudibana kwezixhobo zokudibana.

Ivalvu yokudada

Ivalvu edadayo ithintela ulwelo lokugrumba, iziqwenga kunye nenkunkuma yentsimbi ukuba ingaphumi ibuyele kwintambo yokugrumba. Xa ifakwe ngokuchanekileyo kwintambo yokugrumba, ezi valve zibonelela ngokhuseleko olongezelelekileyo lokuqhushumba.

Ivalvu edadayo ingasetyenziswa naphi na ukusuka phezulu ukuya ezantsi kwentambo yokubhola. Indawo yayo eqhelekileyo ikwi-BHA (indibano yomngxuma osezantsi) equka i-bit, kwaye ingabandakanya i-bit sub, i-near bit stabilizer, ezinye iziqinisi, i-float sub, i-cross-over sub, i-mud motor (i-top sub), i-drill collar, kunye ne-drillpipe. Iivalvu ezininzi ezidadayo zingasetyenziswa kwintambo enye, nangona ukufakela kabini kungacetyiswa ngenxa yomonakalo onokwenzeka kwivalvu edadayo kwiimeko zoxinzelelo oluphezulu. Endaweni yoko, yahlula iivalvu kwiindawo ezahlukeneyo zezixhobo.

Iivalvu zokubhola (DP) zeFloat ziyafumaneka kwinkonzo eqhelekileyo, inkonzo ye-H2S – 300°F (HNBR/HSN) kunye nenkonzo ye-H2S – 400°F (Viton.)

Imodeli F, FA:1R, 1F2R, 2F3R, 3F, 3½ IF, 4R, 4F, 5R, 5F6R, kunye ne-6F
Imodeli G,GA, GC:1F2R, 2F3R, 3F, 3½ IF, 4R, 4F, 5R kunye ne-5F6R

Xa uodola nceda ucacise:
Uhlobo lwevalvu edadayo (iModel F okanye iModel G);
Ubungakanani bevalvu yokudada;
Uqhagamshelo kunye ne-OD ye-sub.