Iindaba

Inkqubo yokuQokelela ejikelezayo (i-RSS) yinkqubo yokugrumba ejikelezayo, ngelixa umtya wokugrumba ujikeleza, ijonga kwaye ilawule ukujikeleza kombhobho wokugrumba ngexesha langempela ukuze yenze imisebenzi yokuqhuba, ivumela imisebenzi yokugrumba ukuba ifikelele kwindawo ekujoliswe kuyo ngokuchanekileyo. Isetyenziswa kakhulu kwimithombo ekhokelayo kunye nemithombo ethe tye.
I. Ukubhola Ngokukhokela
Ukubhola ngendlela eqondisayo bubuchwepheshe bokubhola obusebenzisa izixhobo ezikhethekileyo zokubhoboza, izixhobo zokulinganisa, kunye neendlela zokulawula ngokufanelekileyo indlela yokubhoboza i-wellbore, okuvumela ukuba i-drill bit ifikelele kwindawo ekujoliswe kuyo engaphantsi kwe-downhole ngokwecala elithile. Enyanisweni, ukubhoboza ngendlela eqondisayo yindlela yokubhoboza i-wellbore elandela i-engile yokuphambuka eyilwe kwangaphambili kunye ne-azimuth ukufikelela kwindawo ekujoliswe kuyo.
Iintlobo eziphambili zeprofayili ziquka iindidi ezintathu:

Iprofayili enamacandelo amabini: icandelo elithe nkqo + icandelo elakhiweyo
Iprofayili enamacandelo amathathu: icandelo elithe nkqo + icandelo elakhiweyo + icandelo elijiyileyo
Iprofayili enamacandelo amahlanu: icandelo eliphezulu elithe nkqo + icandelo elakhiweyo + icandelo elithambileyo + icandelo elithotywayo + icandelo elisezantsi elithe nkqo

Amanqam amathathu kubuchwepheshe bokugrumba kwicala elithile:

① Ukusetyenziswa kwesixhobo sokugrumba (isixhobo sokujika) xa kugrunjwa ngendlela ethile
② Ukusetyenziswa kwenjini engaphantsi komhlaba edityaniswe ne-bent sub ukugrumba kwicala elingaphambili
③ Ukusetyenziswa kwemoto ejikajikayo (imoto egobileyo enendawo engaphantsi) ukugrumba ngendlela ethe ngqo

II. Ukubhola ngokuthe tye

Imithombo ethe tye luhlobo lomthombo ohamba ngqo. Imithombo yeoyile eqhelekileyo imile nkqo okanye ijike idlule kwidama, kunye necandelo elifutshane elidlula kwidama. Ngokwahlukileyo koko, imigodi ethe tye igrunjwa ngokuthe nkqo okanye ijike ihle iye kwidama, ize emva koko i-wellbor ijike ibe malunga ne-tal, ihambe ngaxeshanye nedama kwaye igrumbe inxalenye ende kuyo ide igqitywe. Imithombo enjalo ingadlula kwidama kangangeemitha ezingamakhulu okanye nangaphezulu kwamawaka amabini, nto leyo eyenza kube lula ukubuyisa ioyile ngakumbi. Ukumelana nokuhamba kwamanzi edama angena kwidama kuyancitshiswa, nto leyo ebangela ukuba amandla emveliso abe phezulu ngokuphindwe kaninzi kunalawo emithombo eqhelekileyo ethe tye okanye ejike ijikeleze.

Buyela kwi-RSS

I-RSS inika iingenelo ezinje ngokunciphisa ukungqubana kunye ne-torque, izinga eliphezulu lokungena (ROP), iindleko eziphantsi, ixesha elifutshane lokwakhiwa kwequla, indlela egudileyo ye-wellbore, ukulawuleka lula, kunye nobude obude becandelo elithe tyaba. Iquka ikakhulu inkqubo yokujika ejikelezayo engaphantsi komngxuma, inkqubo yokujonga nokulawula umphezulu, kunye netekhnoloji yonxibelelwano edibanisa la macandelo mabini.

I-RSS inokuhlelwa ngokwendlela yokusebenza kwendlela yayo yokulawula ibeukukhetha okungaguqukiyokwayeucalucalulo oluguquguqukayoNgokomgaqo wokulawula, inokwahlulwahlulwa ibetyhala i-bitkwayeinqaku-inqakuiinkqubo.

① Cinezela i-bit

Le nkqubo isebenzisa ngokuthe ngqo amandla asecaleni kwi-bit ekufutshane ne-bit. I-offset stabilizer ye-push-the-bit rotary steerable bottom hole assembly (RSBHA) ibekwe kufutshane ne-bit, kunye neziqinisi ezininzi ze-drill string ezidityanisiweyo ngokulandelelana ngasemva kwayo. Ngexesha lokuqhuba, amandla okuphambuka aveliswa sisixhobo sokuqhuba esingaqhelekanga abangela ukuba i-RSBHA iphambukise kwaye yakhe i-engile. (Oku kudla ngokubangela ukuba i-wellbore shape ibe yi-helical, ukucocwa kakuhle kwemingxunya, kunye nokuncipha okusebenzayo kobubanzi be-wellbore, oko kukuthi, ubungakanani obunqamlezileyo be-wellbore buba mncinci kunobubanzi be-bit.)

② Inqaku-kwi-bit

Le nkqubo ijika i-bit iye kwindlela efunekayo yokuthutha i-wellbore ngokugoba umtya wokubhola kufutshane ne-bit. I-offset stabilizer ye-point-the-bit RSBHA ibekwe phakathi kwezi-stabilizer ezimbini, ifikelela kwi-rotary steering ikakhulu nge-bit angle. (Umgangatho ongcono we-wellbore, kunye nobunzima obukhulu be-dogleg obudlula i-15°/30m.)