API 5CT Oilfield Casing Pipe

OD: 4-1/2“ to 20“/ 114.3mm to 508mm
Wall Thickness: 5.21 - 16.13 mm
Thread: STC.BTC.LTC
Length: R1(4.88-7.62M). R2(7.62-10.36M). R3(10.36-14.63Meters)
Standard: API 5CT
Grade: J55, K55, M65, N80,N80-1, N80-Q, L80-1,
L80-9Cr, L80-13Cr, C90, C95, T95, P110, Q125
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Product Details



Product Details





API 5CT oil casing pipe is mostly used for oil well drilling. In accordance with the SY/T6194-96 standard, it is available as short thread type and long thread type supplied with their couplings.






Brief Introduction


API 5CT Oilfield Casing Pipe


Size

Linear Mass lb/ft

Outside Diameter

Wall Thickness

Type of end-finish

 

 

inch

mm

inch

mm

Grade

 

 

 

 

 

 

H-40

J-55 K-55

M-65

L-80 C-95

N-80 1,Q

C-90 T-95

P-110

Q-125

4 1/2''

9.5

4.5

114.3

0.205

5.21

PS

PS

PS

-

-

-

-

-

 

10.5

4.5

114.3

0.224

5.69

--

PSB

PSB

-

-

-

-

-

 

11.6

4.5

114.3

0.25

6.35

--

PSLB

PLB

PLB

PLB

PLB

PLB

-

 

13.5

4.5

114.3

0.29

7.37

--

--

PLB

PLB

PLB

PLB

PLB

-

 

15.1

4.5

114.3

0.337

8.56

--

--

-

-

-

-

PLB

PLB

5''

11.5

5

127

0.22

5.59

--

PS

PS

-

-

-

-

-

 

13

5

127

0.253

6.43

--

PSLB

PSLB

-

-

-

-

-

 

15

5

127

0.296

7.52

--

PSLB

PLB

PLB

PLB

PLB

PLB

-

 

18

5

127

0.362

9.19

--

--

PLB

PLB

PLB

PLB

PLB

PLB

 

21.4

5

127

0.437

11.1

--

--

PLB

PLB

PLB

PLB

PLB

PLB

 

23.2

5

127

0.478

12.14

--

--

-

PLB

PLB

PLB

PLB

PLB

 

24.1

5

127

0.5

12.7

--

--

-

PLB

PLB

PLB

PLB

PLB


What is API series casing?


API series casing is the casing that conforms to API standard, and the current standard is API 5ct-2005.The casing is a tube that runs through the surface to the borehole as a casing.The commonly used steel grade is H40J55K55M65L80C95N80C90T95P110Q125Thread as per API Spec 5B.


Where can we use the oil casing


Different types of casing used in oil production: surface casing -- protecting the well from contamination by shallow water and gas -- supporting wellhead equipment and maintaining the weight of the other layers of casing.Technical casing - separates different layers of pressure to allow drilling fluid to flow normally and protect production casing.- to facilitate the installation of anti-blowout devices, anti-leakage devices and liner in the drilling well.Reservoir casing - the removal of oil and gas from subsurface reservoirs.- used to protect drilling and to layer drilling mud.The casing diameter is usually 114.3 mm to 508 mm.


Protect drilling from shallow water and gas -- support wellhead equipment and keep other layers of casing weight.


Technical casing - separates different layers of pressure to allow drilling fluid to flow normally and protect production casing.- to facilitate the installation of anti-blowout devices, anti-leakage devices and liner in the drilling well.


Reservoir casing - the removal of oil and gas from subsurface reservoirs.- used to protect drilling and to layer drilling mud.The casing diameter is usually 114.3 mm to 508 mm.


Type and packing of oil casing: SY/ t6194-96 "oil casing" includes short thread casing and coupling and long thread casing and coupling.


Petroleum casing anticorrosive countermeasure


1.First of all, water quality should be up to standard, and water quality testing and management should be strict.Carry out separate pollution cleaning and injection, strengthen the cleaning work of main water pipeline, ensure that the water quality inside the station and at the bottom of the well is up to standard, and reduce the corrosion source into the annular space;


2. For the injection Wells that have been newly put into production, the annulus protective liquid, which is mainly used for adding sterilization, shall be added regularly in a systematic manner;


3. In view of the accelerating effect of mechanical abrasion on casing corrosion, it is recommended to add a rubber ring on the tubing collar or a centralizer on the serious part of the well deviation to avoid the scraping of the casing and the side contact casing in the process of operation and water injection;


4. For severe bacterial corrosion under scale and slow growth and killing of SRB under high temperature, high temperature water or steam of 100 c can be injected into the annulus regularly to kill SRB under scale;


5. It is not recommended to popularize cathodic protection and coated casing until the corrosion in the casing of the water injection well is under effective control.



Product manufacturing process



Product size


Product details



The Workshop

Cangzhou Steel Pipe Group (CSPG)Co.,Ltd.

No.92 JieFang East Road ,Cangzhou City, Hebei,P.R.China.

 has more than eighteen years history company which located in Lecong Iron and Steel World, a well-known steel distribution center in China, with superior geographical position and convenient water and land transportation. 

 

We are a direct-selling manufacturer specializing in the research and development of oil casing  steel pipes, steel spiral pipes, anti-corrosion steel pipes inside and outside. Since its inception, the company has been guided by a brand-new thinking of steel pipe product market based on the business philosophy of honesty, pragmatism and knowledge-seeking.



FAQ

Why to choose us?

1.We provide products to our customers individual specifications and special needs with competitive price and best service.

2. Immediate respond

We will be 24/7 on line at your services. Provide one-to-one service with our sincerity.

3. Professional suggestions

We could provide you the professional suggestion with our expertise acumen.

4. Short delivery period

We are based on a long-term cooperation with several major domestic steel company with an outstanding advantage is sufficient supply. Shorter the supplying period.

 

 

 

 

 

 

Edit by Ms. Vicky of  CSPG

Contact us directly by:

Email: ella@cnspipe.com  ,vicky@cnspipe.net

Tel / Whatsapp: +86-180327140146

Skype: cnspipe002


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