Umehluko phakathi kwe-MWD ne-LWD?

Ukulinganisa Ngenkathi Umba (MWD): Isifinyezo esithi “Measurement while Drilling” ngesiNgisi.
Ithuluzi le-MWD elingenantambo lingenza izilinganiso ngesikhathi ngesikhathi sokumba, okungukuthi, lapho ukubhola kungamiswa, ijeneretha yodaka ithumela ukwaziswa okukalwe nge-downhole probe phezulu, futhi uhlelo lwekhompyutha luqoqa futhi lucubungule umthombo wesikhathi sangempela. imingcele. Nemingcele yokwakheka. I-MWD ingakala i-engeli yokuthambekela, i-azimuth angle, i-engeli yobuso bethuluzi namandla e-gamma emvelo okwakheka phakathi nenqubo yokumba, futhi inikeze amapharamitha we-wellbore ngesikhathi kanye nedatha yokuhlola ukwakheka kokumbiwa kwemithombo echezuke kakhulu nemithombo evundlile. Leli thuluzi liwumshini wobuchwepheshe obalulekile wokuthuthukisa isivinini sokumba kanye nokuqinisekisa ikhwalithi yokumba emisebenzini eqondile nevundlile yokumba umthombo.

Ukuloga Ngenkathi U-Drilling (LWD): Isifinyezo esithi “Log While Drilling” ngesiNgisi.
Esokuqala isilinganiso sokumelana ne-resistant, bese kuba i-neutron, ukuminyana, njll. Umehluko utholakala kumapharamitha azotholakala.
I-MWD iwukulinganisa ngokuyinhloko ngenkathi kubholwa. Kala i-azimuth yomthombo, ukuthambekela komthombo, ubuso bethuluzi (amandla kazibuthe, amandla adonsela phansi), kanye nokubhola komhlahlandlela; I-LWD ikala i-azimuth yomthombo, ukuthambekela komthombo, nobuso bethuluzi, futhi ikala ukumelana, i-gamma yemvelo, ingcindezi yomthombo, i-porosity, Ukuminyana, njll., ingangena esikhundleni sokugawulwa kwezintambo zamanje.

Imingcele yedivayisi yokudlulisela isignali ye-downhole iba ama-pulses noma amagagasi okucindezela, adluliselwa emhlabathini ngoketshezi lokubhoboza olusepayipini lokubhoboza njengomqhubi, futhi angene engxenyeni ephansi yesistimu. Engxenyeni ephansi, isamukeli sesignali esivame ukufakwa kusikhuphukeli siguqula imingcele ibe amasignali kagesi futhi iwadlulisele kukhompyutha ngekhebula ukuze kuhlungwe, kubhalwe phansi, kuboniswe futhi kuqoshwe. Njengamanje, kunezinhlelo ezimbili zokudlulisela isignali ezisetshenziswayo ezivamile, eyodwa iwuhlobo lwe-pulse kanti enye iwuhlobo lwamagagasi aqhubekayo. Uhlobo lwe-pulse luhlukaniswe lwaba yi-positive pressure kanye ne-negative pressure pulse. I-positive pressure pulse system isebenzisa i-plunger ukuvimba isiteshi samanzi sokumba ngaso leso sikhathi, okubangela ukuthi umfutho wesikhuphukeli ukhuphuke ngokuzumayo kanye nesiqongo; i-negative pressure pulse system isebenzisa i-valve yokukhulula ukuze ivuleke ngokushesha ukuze ikhiphe uketshezi lokubhoboza endaweni ye-annular, okubangela ukucindezela kwesikhuphukeli Ukwehla ngokuzumayo kubonakala inani eliphakeme elibi. Isistimu yegagasi eqhubekayo isebenzisa isethi yama-stators slotted, ama-rotor, noketshezi lokubhoboza ukuze kukhiqizwe igagasi elinefrikhwensi ephansi yefrikhwensi ethile lapho idlula, futhi isignali idluliselwa phansi kusetshenziswa leli gagasi njengesithwali. Uma usebenzisa amathuluzi e-MWD ohlobo lwe-pulse ukuze ulinganise, ngokuvamile misa iphampu bese umisa i-turntable. Uma usebenzisa uhlobo lwamagagasi aqhubekayoAmathuluzi e-MWD, ukulinganisa kungenziwa ngokuqhubekayo ngokusebenza kokubhoboza ngaphandle kokumisa umsebenzi wokubhoboza. Imvamisa yegagasi eliqhubekayo ngokuvamile iphakeme kunaleyo yama-pulses avumayo noma angalungile.

Ngokuvamile, umehluko phakathi kwalokhu kokubili ukuthi i-LWD ibanzi kune-MWD. Ukusetshenziswa okuvamile kwe-MWD i-probe + battery + pulse + battery + gamma, kanti i-LWD evamile iwuphenyo +ibhethri + i-pulse + battery ++ gamma + resistivity.

I-MMRO gyro inclinometer isebenzisa ubuchwepheshe bakamuva be-Vigor - solid-state

i-gyroscope kanye ne-MEMS accelerometer. Kuyi-inclinometer enamaphuzu amaningi eyodwa enomsebenzi wasenyakatho ozifunela wona. Ithuluzi linezinzuzo zosayizi omncane, ukumelana nomthelela, ukumelana nezinga lokushisa eliphezulu, nokunemba kokulinganisa okuphezulu. Isetshenziselwa kakhulu i-trajectory ye-well trajectory, i-casing window orientation, umumo we-cluster well perforation, njll.

Ukuze uthole ulwazi olwengeziwe, ungabhalela ibhokisi lethu lemeyiliinfo@vigorpetroleum.com &marketing@vigordrilling.com