MWD VS LWD

Yintoni i-MWD (Umlinganiselo Ngexa Kugrunjwa)?

I-MWD, emele iMeasurement Ngelixa UKwemba, bubuchule obuphambili bokugawulwa kwemithi obuphuhliswe ukujongana nemingeni eyayanyaniswa nokugrumba kwii-engile ezigqithisileyo. Obu buchule bubandakanya ukudibanisa izixhobo zokulinganisa kumtya we-drill ukubonelela ngolwazi lwexesha lokwenyani olunceda ekuphuculeni ukuqhubela phambili kwe-drill. I-MWD inoxanduva lokulinganisa iipropati ezahlukeneyo zomzimba ezifana nobushushu, uxinzelelo, kunye nendlela yomthombo. Imisela ngokuchanekileyo ukuthambekela kwe-borehole kunye ne-azimuth, idlulisela le datha kumphezulu apho inokubekwa esweni ngokukhawuleza ngabaqhubi.

Yintoni i-LWD (Ukugawulwa Ngeemithi Ngexa Kugrunjwa)?

I-LWD, okanye iLogging Ngelixa uKwemba, yindlela ebanzi eyenza ukurekhoda, ukugcinwa, kunye nokuhanjiswa kolwazi ngexesha lomsebenzi wokomba. Ibamba idatha yovavanyo oluxabisekileyo, kubandakanywa uqikelelo loxinzelelo lwepore kunye nobunzima bodaka, ngaloo ndlela inika abaqhubi ulwazi olunzulu malunga nobume bedama. Oku ke, kuvumela ukuba kwenziwe izigqibo ezinolwazi malunga nokugrumba. I-LWD ibandakanya iindlela ezahlukeneyo zobuchule ezifana nokugrumba i-electromagnetic, ukugawulwa kwenyukliya, ukugawulwa kwe-acoustic, kunye ne-nuclear magnetic resonance logging. Ezi ndlela ziququzelela i-geosteering, uhlalutyo lwe-geomechanical, uhlalutyo lwe-petrophysical, uhlalutyo lwe-reservoir fluid, kunye nemephu yendawo yokugcina amanzi.

Umahluko phakathi kwe-MWD kunye ne-LWD:

Nangona i-MWD ithathwa njengeseti ephantsi ye-LWD, kukho iyantlukwano eyahlukileyo phakathi kwezi ndlela zimbini zobuchule.

Isantya soThutho: I-MWD ibonakaliswe ngokubonelelwa kwedatha yexesha lokwenyani, eyenza abaqhubi be-drill babeke iliso kwimisebenzi ngokuqhubekayo kwaye benze uhlengahlengiso olukhawulezileyo ukuba kukho imfuneko. Ngokwahlukileyo, i-LWD ibandakanya ukugcina idatha kwimemori yesimo esiqinileyo ngaphambi kokuba idluliselwe kumphezulu kuhlalutyo olulandelayo. Le nkqubo yokugcina kunye nokubuyisela ibangela ukulibaziseka okuncinci njengoko idatha erekhodiweyo idinga ukufunyanwa kwaye ihlaziywe ngabahlalutyi.

Inqanaba leNgcaciso: i-MWD igxininise kakhulu kulwazi lwesikhokelo, lujolise kwiinkcukacha ezifana nokuthambekela komthombo kunye ne-azimuth. Kwelinye icala, i-LWD ibonelela ngoluhlu olubanzi ngakumbi lwedatha enxulumene nokuqulunqwa kwethagethi. Oku kuquka imilinganiselo yemitha ye-gamma, ukuxhathisa, ukuqina, ukucotha, uxinzelelo lwangaphakathi kunye nomnyaka, kunye namanqanaba okungcangcazela. Ezinye izixhobo ze-LWD zide zibenakho ukuqokelela iisampuli zolwelo, nto leyo ephucula ngakumbi ukuchaneka kohlalutyo lwedama.

Ngokwenyani, i-MWD kunye ne-LWD ziinkqubo eziyimfuneko ekuphuculeni imisebenzi yokomba ngaphandle konxweme. I-MWD inikezela ngedatha yexesha lokwenyani, ikakhulu igxile kulwazi olukhomba indlela, ngelixa i-LWD ibonelela ngoluhlu olubanzi lwedatha yovavanyo. Ngokuqonda ama-nuances phakathi kobu buchule, iinkampani zinokuphucula ngokubonakalayo ukusebenza kwazo kakuhle kunye nokhuseleko. Ngaphezu koko, ukukhusela iikhabhinethi zokuhlala ezicandiweyo kudlala indima ebalulekileyo ekuqinisekiseni ukuba umsebenzi wokomba uyimpumelelo. Ukuthathela ingqalelo ezi nkalo kunokuphucula imisebenzi yokomba kwaye kube negalelo kwimpumelelo yokusebenza ngokubanzi.