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The casing pipe for oil well drilling is a steel pipe used to support the well wall of oil and gas wells, so as to ensure the normal operation of the whole oil well during the drilling process and after the completion of the well. According to different drilling depth and geological conditions, several layers of casing shall be used for each well. After casing running into the well, cement should be used for cementing. It is different from tubing and drill pipe, and can not be reused. It belongs to disposable consumption material.

Introduction:

The special oil casing pipe is mainly used for the drilling of oil and gas wells and the transportation of oil and gas. It includes oil drilling pipe, oil casing and oil extraction pipe. Oil drill pipe is mainly used to connect drill collar and bit and transfer drilling power. Petroleum casing is mainly used to support the well wall in the process of drilling and after completion, so as to ensure the normal operation of the whole oil well in the process of drilling and after completion. The oil and gas at the bottom of the oil well are mainly transported to the surface by the pumping tubing.

Oil casing is the lifeline to maintain oil well operation. Due to different geological conditions, the downhole stress state is complex, and the comprehensive action of tensile, compressive, bending and torsional stresses acts on the pipe body, which puts forward higher requirements for the quality of the casing itself. Once the casing itself is damaged for some reason, the production of the whole well may be reduced or even discarded.

According to the strength of the steel itself, the casing can be divided into different steel grades, namely J55, K55, N80, L80, C90, T95, P110, q125, V150, etc. Different well conditions and well depths lead to different steel grades. In corrosive environment, the casing itself is also required to have corrosion resistance. In the complex geological conditions, casing is also required to have collapse resistance.he oil casing is a steel pipe used to support the well wall of oil and gas wells, so as to ensure the normal operation of the whole oil well during the drilling process and after the completion of the well. According to different drilling depth and geological conditions, several layers of casing shall be used for each well. After casing running into the well, cement should be used for cementing. It is different from tubing and drill pipe, and can not be reused. It belongs to disposable consumption material.

Introduction:

The special oil pipe is mainly used for the drilling of oil and gas wells and the transportation of oil and gas. It includes oil drilling pipe, oil casing and oil extraction pipe. Oil drill pipe is mainly used to connect drill collar and bit and transfer drilling power. Petroleum casing is mainly used to support the well wall in the process of drilling and after completion, so as to ensure the normal operation of the whole oil well in the process of drilling and after completion. The oil and gas at the bottom of the oil well are mainly transported to the surface by the pumping tubing.

Oil casing is the lifeline to maintain oil well operation. Due to different geological conditions, the downhole stress state is complex, and the comprehensive action of tensile, compressive, bending and torsional stresses acts on the pipe body, which puts forward higher requirements for the quality of the casing itself. Once the casing itself is damaged for some reason, the production of the whole well may be reduced or even discarded.

According to the strength of the steel itself, the casing can be divided into different steel grades, namely J55, K55, N80, L80, C90, T95, P110, q125, V150, etc. Different well conditions and well depths lead to different steel grades. In corrosive environment, the casing itself is also required to have corrosion resistance. In the complex geological conditions, casing is also required to have collapse resistance.

Saigao OCTG DRILL PIPE EXPORTERS, Saigao OCTG GREEN PIPE & Saigao OCTG STEEL PIPE AT BEST PRICE

Saigao Oil Country Tubular Goods Line Pipe

Saigao OCTG Seamless Pipe

Saigao OCTG Welded Pipe

Saigao Oil country tubular goods (Saigao OCTG) is a group of seamless rolled products comprising of the casing, tubing, and drill pipe subjected to stacking conditions according to their particular application.

Drill pipe is heavy seamless tube that circulates drilling fluid and rotates the drill bit. Pipe segments 30 ft (9m) long are combined with tool joints. Drill pipe is at the same time subjected to drilling by its dead weight, high torque by axial tension, and internal pressure by the purging of drilling fluid. Additionally, alternating bending loads due to non-vertical or redirected drilling may be superimposed on these basic loading patterns.

Casing pipe lines the borehole. It is liable to internal pressure by fluid purging, axial tension by its dead weight, and external pressure by surrounding rock formations. The casing is especially exposed to axial tension and internal pressure by the pumped oil or gas emulsion.

Tubingis the pipe through which the oil or gas is transported from the wellbore. Tubing segments are generally around 30 ft [9 m] long with a threaded association on each end.

Corrosion resistance under sour service conditions is a very important Saigao OCTG characteristic, especially for casing and tubing. Typical Saigao OCTG suppying processes include (all dimensional ranges are approximate)

Continuous mandrel-rolling process and the push bench process for sizes somewhere in the range of 21 and 178 mm OD.

Plug mill rolling for sizes somewhere in the range of 140 and 406 mm OD.

Cross-roll piercing and Pilger moving for sizes somewhere in the range of 250 and 660 mm OD.

These procedures normally don't allow the thermomechanical processing customary for the strip and plate products used for welded pipe. In this way, the high-quality seamless pipe must be delivered by increasing the alloying content in combination with a suitable heat treatment such as quench & tempering.

TABLE OF CONTENT

 Saigao OCTG Casing Pipe Specification

 Steel Tube and Pipe Cut to Size

Saigao OCTG Casing Pipe Specification
Product:Casing Pipe, Oil Casing, API Casing, Well Casing, Casing
Application:Used for oil casing and tubing in oil wells as well as sidewall
Size:OD: 114.3mm-508mm
WT: 5-16mm
LENGTH: R1, R2, R3
Pipe Standard:API 5CT PSL1/PSL2 J55,K55,N80-1,N80-Q,
API 5CT PSL1/PSL2 L80-1, L80-9Cr,L80-13Cr,C90, C95, P110, Q125
Thread:NUE, EUE, VAM, STC, LTC, BTC, XC, VAM TOP, NEW   VAM,HYDRILL CS
Special ServiceSweet Service, Sour Service, Anti-H2S, NACE   MR0175/ISO15156
Accessories:Pup Joint, Coupling, Drill Collar, Crossover etc.
 
Saigao OCTG Casing Pipe
Product:Casing Pipe, Oil Casing, API Casing, Well Casing, Casing
Application:Used for oil casing and tubing in oil wells as well as sidewall
Size:OD: 114.3mm-508mm
WT: 5-16mm
LENGTH: R1, R2, R3
Pipe   Standard:API 5CT PSL1/PSL2 J55,K55,N80-1,N80-Q,
API 5CT PSL1/PSL2 L80-1, L80-9Cr,L80-13Cr,C90, C95, P110, Q125
Thread:NUE, EUE, VAM, STC, LTC, BTC, XC, VAM TOP, NEW VAM,HYDRILL CS
Special   ServiceSweet Service, Sour Service, Anti-H2S, NACE MR0175/ISO15156
Accessories:Pup Joint, Coupling, Drill Collar, Crossover etc.
 
Saigao OCTG API Tubing
Product:Tubing Pipe, Oil Tubing, API Tubing Well Tubing, Tubing
Application:Used for extracing Oil or Gas from Wells
Size:OD: 48.26mm-114.3mm
WT: 3.18-16mm
LENGTH: R1, R2, R3
Pipe   Standard:API 5CT PSL1/PSL2 J55,K55,N80-1,N80-Q,
API 5CT PSL1/PSL2 L80-1, L80-9Cr,L80-13Cr,C90, C95, P110, Q125
Thread:NUE, EUE, VAM, STC, LTC, BTC, XC, VAM TOP, NEW VAM,HYDRILL CS
Special   ServiceSweet Service, Sour Service, Anti-H2S, NACE MR0175/ISO15156
Accessories:Pup Joint, Coupling, Drill Collar, Crossover etc.
 
Oil Country Tubular Goods Imports, Saigao OCTG Pipes For Sales.
·           Saigao   OCTG MARKET
·           Saigao   OCTG WELDED PIPE
·           Saigao   OCTG ERW PIPE
·           Saigao   OCTG OIL AND GAS
·           Saigao   OCTG REQUIREMENTS
·           Saigao   OCTG TUBULAR
·           Saigao   OCTG TUBING SIZES
·           Saigao   OCTG THREADING
·           Saigao   OCTG OILFIELD PIPE·           Saigao   OCTG PIPE CHART
·           Saigao   OCTG LINE PIPE
·           LARGEST Saigao   OCTG MANUFACTURERS
·           Saigao   OCTG GREEN TUBE
·           Saigao   OCTG GAS PIPE
·           Saigao   OCTG Manufacture
·           Saigao   OCTG AND LINE PIPE
·           Saigao   OCTG COATING PIPE
·           Saigao   OCTG CORROSION PIPE
 
Saigao OCTG Drill Pipe
Product:Drill   Pipe
Application:Used for Mine, water well drilling, well drilling, coal and fore poling
Size:OD: 60.32mm-168.28mm
WT: 6.45-12.7mm
LENGTH: R1, R2, R3
Pipe   Standard:API 5DP E75, X95, G105, S135
Upset   Style:IU, EU, IEU
Connection:NC26 - NC50, 51/2FH, 65/8FH
Internal   coatingTK34,TC2000, Arnco 100XT, 200XT, 300XT
 
Saigao OCTG Tubing And Casing Coupling
Product:Casing and Tubing Coupling, Casing Coupling, Tubing Coupling
Application:Used for connect 2 joints of tubing or casing
Size:Tubing Coupling : 1.9- 4-1/2
Casing Couping : 4-1/2- 13-3/8
Pipe   Standard:API 5CT and 5B PSL1/PSL2 J55,K55,N80-1,N80-Q,
API 5CT and 5B L80-1,C90, C95,T95, P110, Q125
Surface:Whole Phosphating or inside phosphating and outside coating
Thread:NUE, EUE, VAM, STC, LTC, BTC, XC, VAM TOP, NEW VAM,HYDRILL CS
Special   ServiceSweet Service, Sour Service, Anti-H2S, NACE MR0175/ISO15156
Packing:By carton, wooden case, wooden pallet or requirement of customer
 
Pup Joint
Product:Pup Joint, Saigao OCTG Pup Point
Application:Pipe Cut into length used for connect 2 joints of tubing or casing
Size:Tubing Coupling : 2-3/8- 4-1/2
Casing Couping : 4-1/2'' - 20'
Length: 2, 3, 4, 6, 8, 10, 12 ft
Pipe   Standard:API 5CT and 5B J55,K55,N80-1,N80-Q,P110, C95
Surface:Coating
Thread:BTC, LTC, STC
Special   ServiceSweet Service, Sour Service, Anti-H2S, NACE MR0175/ISO15156
Packing:By carton, wooden case, wooden pallet or requirement of customer
 

SAIGAO GROUP is one of professional oil well equipment manufacturers. We provide Fishing Tools, Mud Pump Parts and so on. Want to know more? Please contact us.