MPD (ho cheka khatello e laoloang) Tlhaloso ea IADC ke mokhoa o feto-fetohang oa ho cheka o sebelisetsoang ho laola ka mokhoa o nepahetseng boemo ba khatello ea annular ho pholletsa le seliba.Maikemisetso ke ho netefatsa meeli ea tikoloho ea khatello ea metsi le ho laola boemo ba khatello ea metsi ea annular ka nepo.MPD e reretsoe ho qoba ho phalla ho sa khaotseng ha maro a sebopeho holimo.Phallo efe kapa efe e amanang le ts'ebetso e tla bolokoa ka mokhoa o sireletsehileng ho sebelisoa mekhoa e nepahetseng.
Khamphani ea rona e le mofani oa litšebeletso ea tšoanelehang bakeng sa theknoloji ea MPD (Managed Pressure Drilling) ho CNPC le CNOOC, ho tloha ha ho hlahisoa lits'ebeletso tsa theknoloji ea Halliburton's MPD ho la China ka 2010, re bokelletse kakaretso ea lits'ebeletso tse 25 tsa theknoloji tsa MPD tsa CNPC nakong e fetileng tse 13. lilemo, ho kenyeletsoa liliba tse 8 tse botebo bo fetang limithara tse 8000.
Hajoale, k'hamphani ea rona e na le sehlopha sa litšebeletso tsa tekheniki sa basebetsi ba fetang 60, ho kenyeletsoa baenjiniere ba 17 ba nang le boiphihlelo ba lilemo tse fetang 10 lits'ebeletso tsa MPD le baenjiniere ba 26 ba nang le boiphihlelo ba lilemo tse fetang 5 tsa MPD.E eme e le e 'ngoe ea bafani ba litšebeletso tsa theknoloji tse matla ka ho fetisisa tsa MPD Chaena.
Melemo ea MPD
| Thepa | Molemo | Sephetho | Maikutlo |
| Loop Circuit e koetsoeng | Liphetoho tsa phallo e tsoang selibeng li ka bonoa hang hang | E fokotsa ho se tsitse | Likhahla le tahlehelo li bonoa ka mor'a metsotso e seng mekae |
| E na le khase ea tlhaho le lino tse thellang | Ntlafatsa HSE | Ho na le monyetla o fokolang oa hore maro a kotsi a tšollele fatše | |
| Etsa liteko tsa FIT & LOT ha u ntse u phunya | Tsebo e eketsehileng mabapi le mebuso ea khatello | Monyetla o fokolang oa ho tobana le maemo a kotsi | |
| Sebelisa khatello ea maikutlo | Fetola khatello ea hantle ka mor'a metsotso e seng mekae | Fokotsa nako e sebelisoang liketsahalong tsa taolo ea seliba, ntlafatsa HSE | Ha ho hlokahale ho potoloha seretseng se secha |
| Mekhahlelo e menyenyane | Epa lifensetere tse moqotetsane tsa seretse | ||
| Continuous CirculationSystem | Qoba ho phahama ha khatello ha u qala ho potoloha, ho boloka maemo a tsitsitseng a borehole ha o kopanya | Ntlafatsa HSE, fokotsa menyetla ea ho lahleheloa hantle | Boleng bo ntlafetseng ba borehole, qoba ho thehoa ha metsi, qoba ho potoloha ho lahlehileng |
| Ho cheka maemo a leka-lekaneng (phapang ea khatello e tlase lipakeng tsa borehole le sebopeho) | Eketsa ROP | Fokotsa litšenyehelo tse sa tsitsang | Ka lebaka la ho fokotsa matla a "Chip Hold Down". |
| Eketsa bophelo bo fokolang | Fokotsa litšenyehelo tse nyane le nako e sebelisitsoeng ho khoptjoa ho tsoa mokoting | WOB e nyane, monyetla o fokolang oa hore "bit balling" e etsahale, 'me e fokotsehe haholo | |
| Fokotsa tahlehelo ea mokelikeli | Fokotsa litšenyehelo tsa seretse | Monyetla o fokolang oa ho feta khatello ea fracture nakong ea ho phunya | |
| Fokotsa liketsahalo tsa tahlehelo/taha | Ntlafatsa polokeho le nako e sebelisoang ho laola liketsahalo tsa taolo ea hantle | Ka lebaka la taolo e kholo ea puso ea khatello le meeli e tlaase | |
| Eketsa lintlha tsa casing, beha lik'hase ho teba | Palo e fokotsehileng ea likhoele tsa casing hantle | ||
| Fokotsa tšenyo ea sebopeho | Ntlafatsa tlhahiso, fokotsa nako e sebelisoang le/kapa ntlafatsa katleho ea ts'ebetso ea ho hloekisa | Phello ea ho fokotseha ha metsi a sebopeho le tlhaselo ea likaroloana | |
| Fokotsa ho hlaha ha mathata a fapaneng a ho khomarela | Fokotsa nako eo u e qetang u sebetsa, ho tšoasa litlhapi, ho kheloha, le litšenyehelo tsa lisebelisoa tse setseng fatše | Matla a fapaneng a sebetsang khoeleng a fokotsehile |
Kenyelletso ea lisebelisoa tsa MPD:
Setsi sa Taolo ea Khatello
Bopaki ba ho phatloha tlas'a khatello e ntle le setifikeiti sa sechaba sa CCS le DNV.
☆ 316L karolo e ka hare ea tšepe e sa hloekang, sebopeho se kopaneng, le ts'ebetso e felletseng.
☆Bonyane litekanyo ka bolelele, bophara, le bophahamo: limithara tse 3 x 2.6 metres x 2.75 metres.
Ka ho iketsakhamatsamaiso
E na le setifikeiti sa China Classification Society (CCS).
☆ Khatello e lekantsoeng: 35 MPa, Diameter: 103 mm
☆ E 'ngoe ea mantlha le bekapo e le' ngoe
☆ Mita ea phallo ea boima bo phahameng ka ho fetesisa: Tekolo ea nako ea 'nete ea phallo ea phallo.
Sistimi ea ho fumana le ho laola data ea PLC
E na le setifikeiti sa China Classification Society (CCS).
Lebokose la phano la boitsebiso bo ke keng ba phatloha ExdⅡBT4, tekanyo ea tšireletso ea khetla IP56.
Seteishene sa taolo ea Hydraulic
☆ E na le mesebetsi ea ho laola sebaka sa marang-rang le e hole.
☆ Phepelo ea matla: Mekhoa e meraro - motlakase, pneumatic le manual.
☆ Botlolo ea accumulator e nang le setifikeiti sa ASME.
Hlooho ea taolo ea rotary
☆ Export flange 17.5, mohlala o tlase oa flange 35-35.
☆ Diameter 192/206mm, tekanyo ea khatello 17.5MPa.
☆ Khatello e koalang ea clamp ke 21MPa, khatello ea ho bula ke ≤7.5MPa, khatello ea pompo ea ente ea oli ke 20MPa, matla a kakaretso ke 8KW.
Sistimi ea matšeliso ea khatello ea maikutlo
☆ Mokhoa oa ho khanna: E tsamaisoa ke enjene ea ho tuka ka hare.
☆ Khatello e phahameng ea ho sebetsa: 35 MPa.
☆ Ho falla: 1.5-15 l / s
PWD (Khatello ha U ntse U Rata)
☆ Khatello e phahameng ea ts'ebetso
☆ Boholo ba mocheso o sebetsang: 175 ℃.
Nako ea poso: Dec-01-2023