Amathuluzi Okulinganisa Okuvamile Ngenkathi Kubhobozwa (MWD).

Uhlelo olujwayelekile Lokukala Ngenkathi Kumba (MWD) luqukethe uphenyo lwe-downhole, isistimu yokudlulisa idatha kanye nephakethe lempahla engaphezulu. Idatha yokuqondisa ikalwa nge-downhole probe futhi ithunyelwe nge-telemetry yodaka lwe-pulse noma amagagasi kagesi ukuze phezulu. Ngamathuluzi amaningi izindlela ezihlukene zokusebenza zingashintshwa ngokulandelana kwe-pulse.

I-Downhole probe

I-downhole probe yohlelo Lokukala Ngenkathi Umba (MWD) ngokujwayelekile luhlanganisa ama-accelerometer amathathu ombuso oqinile ukuze alinganise ukuthambekela kanye nama-magnetometers amathathu esimo esiqinile ukulinganisa i-azimuth. I-downhole probe iyafana naleyo yesimo esiqinile esisodwa kanye nethuluzi lokudutshulwa okuningi futhi ibekwe kukhola engewona uzibuthe.

Ukudluliswa kwedatha

Izindlela ezintathu eziyinhloko zokudlulisa idatha phezulu zikhona:

1.I-telemetry yodaka lwe-pulse ihlanganisa idatha ngefomethi kanambambili futhi iyithumele phezulu ngama-pulse okucindezela okuhle noma okunegethivu akhiqizwe oketshezini lokumba lapho atholwa khona ngama-transducer okucindezela kupayipi elimile futhi aqoshwe ngekhompuyutha engaphezulu.

2.I-telemetry yegagasi eliqhubekayo, uhlobo lwe-pulse ephozithivu, isebenzisa isisetshenziswa esizungezayo esikhiqiza isignali yefrikhwensi engaguquki ethumela ulwazi kanambambili olufakwe ikhodi ekushintsheni kwesigaba kumagagasi okucindezela ukuba abonakale phezu kwekholomu yodaka. Inzuzo eyinhloko yesistimu ye-telemetry yamagagasi eqhubekayo ngaphezu kwesistimu enhle nengalungile imvamisa ye-pulse ephezulu enciphisa isikhathi sokuhlola esidingekayo.

3.Ukudluliswa kwe-electromagnetic kusebenzisa amaza e-electromagnetic aphansi adlula ekubunjweni. Lawa atholwa ngothi olubekwe phansi eduze nendawo yomshini. Isistimu inobubanzi obunomkhawulo wokujula obuncike ekuphikiseni kokubunjwa. I-resisivity ephansi, engashoni ibanga lokujula eliwusizo. Njengamanje lokhu kuvamise ukuba phakathi kuka-1000 no-2000 wamamitha. Ngokuphambene nezinhlelo ze-telemetry zamaza ezinhle, ezingezinhle futhi eziqhubekayo, isistimu ye-electromagnetic telemetry ingasetshenziswa uma umthombo uvaliwe, isb ukubhoboza okungenabhalansi .

Imishini yobuso

Izingxenye ezijwayelekile ezingaphezulu zodaka lwesistimu ye-Measurement When Drilling (MWD) ihlanganisa iziguquli zokucindezela ukuze kutholwe isignali, okokusebenza komshini wokukhipha amasignali we-elekthronikhi, kanye nokufundwa okuhlukahlukene kwe-analogue nedijithali namapulani.

Ukuqinisekisa ikhwalithi

Ukuqinisekiswa kwekhwalithi Yesilinganiselo Ngenkathi Amathuluzi Okugaya (MWD) afana nalawo wesimo esiqinile amathuluzi angawodwa kanye namathuluzi okudutshulwa okuningi. Ngaphezu kwalokhu ukuhlolwa komsebenzi kufanele kwenziwe ngaphambi kokusebenzisa i-BHA ukuya phansi.

Izinqubo ezijwayelekile:

1.Yenza ukuhlolwa komsebenzi ongaphezulu. Hlola ukuqondanisa kwethuluzi Lokukala Ngenkathi Umba (MWD) nengxenye egobile, uma ikhona.

2.Yenza inqubo yokuhlola engajulile.

3.Ithuluzi Lokukala Ngenkathi Umba (MWD) kufanele lihlolwe, noma nini lapho kufaneleka ukwenza kanjalo, eduze nendawo engaphezulu ngangokunokwenzeka. Lokhu kuvamise ukuba yizitendi ezi-1 kuya kwezi-2 zombhobho ongaphansi kwe-rotary. Inqubo imi kanje:

-namathisela i-kelly noma idrayivu ephezulu;

-thatha inhlolovo bese ulinda ukudluliswa kwenhlolovo ephelele. Imibandela yenhlolovo egculisayo yilena:

-ukuthambekela kufanele kube ngaphansi kuka-1 °;

-inkundla yamandla adonsela phansi kufanele ibe phakathi kuka-0.003 g yenani elilindelekile;

-qaphela ukuthi idatha kazibuthe ethathwe ngaphakathi kwesikhuphukeli noma i-casing ayivumelekile;

-uma ukuhlolwa kwanelisa, futhi ama-pulses odaka akhishwa ikhodi aqhubeke nokusebenza. Uma kungagculisi, buyisela ithuluzi phezulu.

4.Yenza inhlolovo yebhentshimakhi. Gijimani emgodini ukuze inzwa Yokukala Ngenkathi Umba (i-MWD) ibe esiteshini sebhentshimakhi futhi yenze inhlolovo yokuma ngendlela elandelayo:

5.Isiteshi sokulinganiswa sicishe sibe ngamamitha angu-15 (50 ft) ngaphansi kwesicathulo se-casing sangaphambilini, kodwa sikude ngokwanele kweminye imithombo ukuze kugwenywe ukuphazamiseka okungaba khona kukazibuthe ohlelweni Lokukala Ngenkathi Umba (MWD).

6.Yenza inhlolovo yesheke. Lokhu kuzothathwa phansi ngaphambi nje kokumba futhi okungcono kakhulu uma sekusondele inhlolovo yokugcina ye-Measurement When Drilling (MWD) ethathwe ngesikhathi sangaphambilini ngangokunokwenzeka. Kungase kudingeke ukuthi kusetshenziswe inhlolovo yokugcina kodwa eyodwa ye-Measurement When Drilling (MWD) kusukela ekuqaleni. Le nhlolovo izoqinisekisa ukunemba kwedatha yenhlolovo eyenziwa ngaphambilini. Lapho ukungezwani okungaphezu kwamadigri amabili e-azimuth kanye nengxenye yedigri ekuthambekeni kubonwa kulezi zinhlolovo zamasheke, kufanele kukhulunywe nehhovisi ukuze leluleke ngesinyathelo esidingekayo.

7.Gijima emgodini bese ubhoboza phambili uthatha izinhlolovo njengoba kudingekile noma ubheke ubuso bamathuluzi.

8.Noma iyiphi inhlolovo engabazekayo kufanele iqinisekiswe ngokuthatha enye inhlolovo ye-Measurement While Drilling (MWD).

Njengomkhiqizi ochwepheshe wamathuluzi okugawula, onjiniyela bethu bezobuchwepheshe banesipiliyoni seminyaka eminingi ekuqedeni nasekugawulweni kwemithi, wonke amathuluzi okugawula athengiswayo angenziwa ngokwezifiso ngokuya ngezidingo zamakhasimende, vele, singakunikeza nezinsizakalo ezikusayithi ukuze usize. wenza izilinganiso endaweni. Uma unentshisekelo yokuqedela nokugawula imishini, sicela ungangabazi ukuthintana nethimba le-Vigor, sizokunikeza ukwesekwa kobuchwepheshe obuchwepheshile kanye nokwesekwa komkhiqizo ngesikhathi sokuqala.