Txoj Cai
DTH rauj thiab tube drilling tshuab yog ib txoj kev drilling uas sib xyaw ua ke kom zoo dua ntawm huab cua DTH rauj drilling thiab qhov zoo ntawm cov phab ntsa thaiv phab ntsa uas yog qhov zoo rau kev ruaj ntseg ntawm phab ntsa borehole.Thaum drilling, eccentric xyaum yog pov tawm thaum lub eccentric thaiv yog tig rau pem hauv ntej.Qhov txoj kab uas hla ntawm lub eccentric laum pov tseg yog loj dua li lub cheeb ntawm qhov chaw xyaum.Thaum drilling, lub casing yog tsav los ntawm cov yeeb nkab khau kom ua raws li synchronously, thiab seamless steel yeeb nkab tiv thaiv Nws yog ib qho tseem ceeb heev kom stabilize lub qhov phab ntsa ntawm kev sib xyaw ua ke kev tshawb fawb thiab kev tsim khoom kom zoo los tiv thaiv lub qhov phab ntsa los ntawm kev poob thiab vau.Thaum lub eccentric laum me ntsis yog xyaum ua kom tiav, tom qab drilling 0.5 ~ 1 m, lub eccentric block yog retracted los ntawm reversing, thiab ces lub eccentric laum yog retrieved los ntawm lub thaiv phab ntsa casing, kom lub quaternary system yuav traversed ntau smoothly. .Overburden thiab tawg complex stratum.
Technical yam ntxwv
1. Lub down-lub-qhov rauj thiab tube drilling tshuab ua rau tag nrho cov zoo ntawm cov pneumatic down-lub-qhov rauj kom ceev nrooj tawg pob zeb, uas yog conducive rau txoj kev loj hlob thiab kev siv ntawm kev tshawb fawb thiab kev tsim cov qhov dej nyob rau hauv hydrogeological. kev tshawb fawb.
2. Kev ua raws li kev siv tshuab drilling tuaj yeem ua raws li cov casing thaum drilling.Nws tsis tas yuav tsum tau dej thiab cov av nkos, tshwj xeeb tshaj yog nyob rau thaj chaw qhuav thiab dej tsis muaj dej.Nws tuaj yeem ua ob npaug ntawm kev siv zog nrog ib nrab ntawm kev siv zog, zam qhov nyuaj ntawm kev yuav dej los xyaum, thiab txhim kho kev ua haujlwm.Kev txhim kho yog qhov muaj txiaj ntsig zoo.
3. Hom kev siv tshuab drilling no siv synchronous taug qab casing los tiv thaiv phab ntsa thaum drilling, ua kom tag nrho cov txiaj ntsig ntawm qhov zoo ntawm DTH rauj kom tawg lub pob zeb sai sai, thaum tuav lub qhov phab ntsa ntawm plaub series ntawm qaug zog overburden rau sab sauv ntawm lub borehole ruaj khov.Cov cuttings tawg yog nqa tawm ntawm lub qhov los ntawm cov cua ceev ceev, thiab cov nyhuv suction yog qhov zoo rau kev qhib cov dej tawm channel.Kev ntxuav tas li ntawm lub qhov phab ntsa los ntawm cov cua kub ceev kuj tseem ua rau lub sijhawm ntxuav zoo, uas yog qhov zoo rau kev txhim kho hydrogeological drilling thiab ua kom tiav kev ua haujlwm zoo.
4. Lub down-lub-qhov rauj thiab yeeb nkab drilling tshuab yog tsim rau cov pob zeb nyuaj drilling.Rau cov av nplaum tsim los yog cov qauv zoo sib xws, nws yog ib qho yooj yim los thaiv cov huab cua thiab cov drilled cuttings yog ib qho yooj yim rau dai rau ntawm lub qhov phab ntsa los tsim ib tug av nkos plug, uas yog ib qho nyuaj rau ua tiav qhov zoo tagnrho drilling efficiency.
5. Lub casing drilled los ntawm down-lub-qhov rauj nrog cov yeeb nkab yog rub tawm los ntawm cov cuab yeej tshwj xeeb tom qab ua tiav txoj haujlwm ntawm kev tiv thaiv phab ntsa, uas tuaj yeem rov ua dua nyob rau hauv qee lub sijhawm, txo cov nqi tsim kho.
Post lub sij hawm: Aug-27-2021