Uthintelo kunye nokunyangwa kwe-drilling collapse sticking

Ngenxa yokusebenza kakubi kwe-drilling fluid, ukuhluzwa okuninzi kuya kuthoba ukubunjwa kwaye kukhululeke. Okanye i-shale efakwe kwicandelo lequla elinediphu enkulu kakhulu I-Angle iyakhula, iphumela equleni kwaye ibangele ukugrunjwa okuxingekileyo.

Iimpawu zokuwa kodonga lwequla:

1.Yawa ngexesha lokomba

2.Iqula liwile ngexesha lokomba

3.Iqula ladilika ngelixa kusonjwa

4.Reaming yahlukile

Ukuthintela ukuwa kodonga:

1. Sebenzisa i-anti-collapsing drilling fluid okanye i-drilling system ehambelana nokubunjwa, ngokufanelekileyo ukuphucula ubuninzi kunye ne-viscosity ye-drilling fluid, ukulawula ngokungqongqo ukulahleka kwamanzi, kunye nokuphucula amandla okuthwala ilitye.

2. Ukugaya kwiindawo ezidibeneyo, ngaphambi kokungena kwi-Shahejie formation, i-drilling fluid kufuneka yongezwe ngezinto ezaneleyo zokulwa ne-anti-collapse ngokweemfuno zokuyila, kwaye umxholo kufuneka ufikelele malunga ne-3%.

3. Ukusebenza kwe-drilling fluid kufuneka kuzinzile kwaye akunakunyangwa kakhulu.

4. Ngexesha lokugaya, uxinzelelo lokupompa luyanda, ubunzima obumisiweyo buyancipha, isixhobo sokugaya sinamathele, kwaye ukubuyiswa kwe-wellhead kuyancipha okanye itafile enye ye-rotary ikhutshwe. Xa umbhobho wokugaya uguqulwa ngokungathí sina, umbhobho wokugaya kufuneka umiswe okanye udibaniswe, isixhobo sokubhobhoza kufuneka siphakanyiswe kwicandelo eliqhelekileyo lomthombo, kwaye indlela yokucoca iyamkelwa.

5. Ukugrumba kumaleko okuvuza, ulwelo olungaphezulu lokugrumba kwindawo engaphantsi kancinci, ukujonga umjikelo wokugrumba, ukuvuza okungaphezulu kwe-5 m³/h, okanye ngaphakathi nangaphandle kuphela, makucwangciswe ngokukhawuleza, inaliti eqhubekayo ye-annular yolwelo lokomba, makungavulwa. impompo phakathi. Xa i-drilling fluid ingonelanga, inokuzaliswa ngamanzi ukuzama ukukhupha isixhobo sokugaya.

6. Kuphephe ukujikeleziswa kweendawo ezisisigxina, rhoqo utshintshe indawo encinci, kwaye uzame ukunqanda icandelo lomthombo ekulula ukuvuza kunye nokuwa.

7. Ukugaya kufuneka kugcwaliswe ngokuqhubekayo ngolwelo lokubhola ukugcina uxinzelelo lwekholamu yolwelo. Xa i-drilling ibambekile, akunzima ukuyikhupha. Emva kokuba isixhobo sokugaya sithotywe kwicandelo eligudileyo lomthombo kwaye ipompo ivulwa ngokuqhelekileyo ngokufuduswa okuncinci, ukujikeleza kwanda ngokuthe ngcembe.

8. Qala ukugaya ngesantya esiphantsi ngaphandle kokukhupha ipiston.

9. Lawula isantya sokugaya, akukho xinzelelo olunzima kwimeko yokuchasana, phakamisa isixhobo sokugaya ukuya kwicandelo eligudileyo lomthombo, kwaye usebenzise i-punch enye. Indlela yomqolo emibini ukuya kwemithathu.

Unyango lokuwa kodonga lweshaft:

Emva kokuwa kwe-drill, kunokubakho iimeko ezimbini, enye kukuba ukujikeleza kunokuba kuncinci, kwaye enye kukuba ukujikeleza akukwazi ukusekwa nonke.

1. Ukuba unokujikeleza ngokufuduswa okuncinci, akufanele ulahlekelwe leli themba, kodwa kufuneka ulawule ibhalansi esisiseko yokuhamba ngaphandle kunye nokuhamba ngaphandle. Emva kokuba umjikelezo uzinzisiwe, ngokuthe ngcembe wandise i-viscosity kunye nokucheba kolwelo lokomba ukwandisa umthamo wayo othwele isanti, kwaye ngokuthe ngcembe wandise isantya sokuhamba ukuzama ukuzisa ilitye elidilikileyo kumphezulu. Emva kokuba eli nyathelo lenziwe, nokuba i-drill encangathi yokufunxa iyenzeka, nayo iyajongwana nayo.

2. Ukuba umngxuma oxingileyo wenziwa ngokudilika kwe-limestone kunye ne-dolomite, kwaye icandelo lomthombo elidilikileyo alikho ixesha elide, unokucinga ngokumpompa inhibitory hydrochloric acid ukukhulula ukuxinga.

3. Inyathelo elilandelayo yi-milling reverse. Ekubunjweni okuthambileyo, kuyacetyiswa ukuba usebenzise i-barrel sleeve milling milling, okanye usebenzise i-barrel sleeve sleeve milling kunye ne-cone yamadoda okanye umkhonto wokuloba, ukwenzela ukuba ukugaya kunye nokubuyisela umva kunokugqitywa ngexesha elinye ukukhawulezisa inkqubela. Ekubunjweni okunzima, kuyacetyiswa ukunciphisa ubude be-tube ye-casing kunye nokunciphisa iimpazamo kwinkqubo yokugaya. Xa ugalela kwi-centralizer, kuyacetyiswa ukuba ugalele ijagi ukukhulula into ebambekileyo, kuba iinyani ezininzi ziye zangqina ukuba kukho ukuqokelelwa kwesanti encinci ngaphantsi kwe-centerizer, kwaye akuyomfuneko ukugalela isizinzi.