Concentric casing system nrog tis

Lus piav qhia luv luv:

Drilling los ntawm formations nrog xoob, unconsolidated cov khoom ib txwm tuaj nrog cov teeb meem xws li lub qhov bore caving nyob rau hauv los yog collapsing.Yuav ua li cas zam cov teeb meem no?Nrog xyoo ntawm kev xyaum thiab kev tshawb fawb, peb tau tsim concentric casing system nrog tis muaj feem xyuam rau pob zeb tsim nrog silt, thiab los yog me me pebbles.Nrog nws cov qauv yooj yim, kev ua haujlwm yooj yim thiab txhim khu kev qha, lub kaw lus kaw lus nrog tis tuaj yeem ua ntej lub casing yooj yim rau qhov tob hauv 30 meters.Nws yog retrievable thiab nws muaj lub neej ntev.

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Khoom cim npe

Daim ntawv thov

Muaj feem xyuam rau thaj av npog, nrog cov khoom xoob xws li av, av nplaum, weathered pob zeb xuab zeb.

Cov khoom seem

Cov txheej txheem ua haujlwm

Kauj ruam 1: Thaum drilling pib, lub kaw lus tsav lub casing khau thiab casing raj txav mus.
Kauj Ruam 2: Thaum ncav cuag lub hauv paus, nqa lub kaw lus thaiv, cov blocks yuav kaw, thim rov qab thiab rub tawm cov txheej txheem thaiv ntawm lub qhov.
Kauj Ruam 3: Yog tias lub qhov tau ncav cuag qhov xav tau qhov tob, ua kom tiav qhov drilling thiab txuas ntxiv lwm cov txheej txheem.
Kauj Ruam 4: Yog tias koj tseem xav xyaum qhov tob dua, siv cov qauv DTH me me los laum mus rau qhov xav tau qhov tob.

Qhov zoo

Cov khoom siv xauv yog qhov txhim khu kev qha, nws tiv thaiv cov tis ntog.
Ralated part list

Specification ntawm concentric casing system nrog blocks

	D		h	H	C	G
Qauv	OD ntawm Casing Tube (mm)	ID ntawm Casing Tube (mm)	Phab ntsa thickness (mm)	Qhia ntaus ntawv max.Dia.(mm)	Reamed Dia. (mm)	Min.ID ntawm Casing khau (mm)	Qty.ntawm tis	Hom Rauj	Qhov hnyav (KG)
T90	114	101	6.5	99	125	90	2	COP34/DHD 3.5	15
T115	146	126	10	124	157	117	2	COP44/DHD340/SD4/QLX40	20.3
T136	168	148	10	146	180	136	2	COP54/DHD350/SD5/QL50	33.4 ib
T142	178	158	10	154	195	142	2	COP54/DHD350/SD5/QL50	38.8 ib
T160	194	174	10	172	206	160	2	COP54/DHD350/SD5/QL50	46.4 ib