API 5CT P110 Casing Tubing: A Comprehensive Guide

Introduction

API 5CT P110 casing tubing is an essential component in the oil and gas industry. It is used to provide structural integrity to the wellbore and transport oil and gas from the source rock to the wellhead. In this comprehensive guide, we will explore the specifications, dimensions, and uses of API 5CT P110 casing tubing. We will also discuss the different types of connections, ends, and couplings associated with this product.

Specifications and Dimensions

API 5CT P110 casing tubing is available in various sizes and grades. The outer diameter of the casing pipe ranges from 4 1/2 inches to 20 inches (114.3mm to 508mm), while the wall thickness varies depending on the size. The standard casing sizes are 4 1/2 inches to 20 inches, and the thread types include buttress thread casing, long round thread casing, and short round thread casing.

The length of the casing pipe is categorized into three ranges: R1, R2, and R3. R1 has a length range of 6.10-7.32 meters, R2 has a length range of 8.53-9.75 meters, and R3 has a length range of 11.58-12.8 meters. The steel grades available for casing and tubing include J55, K55, N80-1, N80-Q, L80, and P110.

API-5CT P110 casing pipe is a type of steel pipe used in the oil and gas industry for casing wells. It is manufactured according to the American Petroleum Institute (API) 5CT standard, which sets the specifications for casing and tubing used in the industry.

The “P110” designation refers to the minimum yield strength of the pipe, which is 110,000 pounds per square inch (psi). This indicates that the pipe has a high level of strength and can withstand high pressure and stress in oil and gas well applications.

Casing pipes are used to line the drilled hole and provide structural support to the wellbore. They are typically installed during the drilling process and are essential for maintaining the integrity of the well. Casing pipes also prevent the collapse of the wellbore, protect the formation from contamination, and facilitate the extraction of oil and gas.

API-5CT P110 casing pipes are made from carbon or low-alloy steel and undergo a rigorous manufacturing process to ensure their quality and reliability. The pipes are typically seamless or welded and come in various sizes and lengths to accommodate different well depths and drilling requirements.

The manufacturing of API-5CT P110 casing pipes involves several steps, including steel billet heating, piercing, rolling, sizing, straightening, cutting, and inspection. The pipes are subjected to various tests, such as hydrostatic testing, ultrasonic testing, and electromagnetic inspection, to ensure they meet the required standards and specifications.

API-5CT P110 casing pipes offer several advantages in oil and gas well applications. Their high yield strength allows them to withstand the extreme conditions encountered in drilling operations, including high pressure and temperature. The pipes also have good resistance to corrosion, making them suitable for use in corrosive environments.

In addition, API-5CT P110 casing pipes have excellent mechanical properties, including high tensile strength and impact resistance. This ensures their ability to withstand the forces and stresses exerted on them during drilling, completion, and production operations.

Furthermore, API-5CT P110 casing pipes are compatible with various types of well completion equipment, such as couplings, pup joints, and thread protectors. This allows for easy installation and connection to other components of the wellbore.

Casing Pipe Chemical Composition, Mass Fraction(%):

Steel grade

Type

Max

Min

Max

Min

Max

Min

Max

H40

–

0.030

–

J55

–

0.030

–

K55

–

0.030

–

N80

–

0.030

–

N80

–

0.030

–

M65

–

0.030

–

L80

–

0.43

–

1.90

–

0.25

0.35

0.030

0.45

L80

9 Cr

–

0.15

0.30

0.60

0.90

1.10

8.00

10.0

0.50

0.25

0.020

0.010

1.00

L80

13 Cr

0.15

0.22

0.25

1.00

–

12.0

14.0

0.50

0.25

0.020

0.010

1.00

C90

–

0.35

–

1.20

0.25

0.85

–

1.50

0.99

–

0.020

0.010

–

P110

–

0.030

–

Q125

–

0.35

–

1.35

–

0.85

–

1.50

0.99

–

0.020

0.010

–

Note：If the wall thickness is less than 17.78mm, the molybdenum content of the C90-1 steel grade has no lower limit.

Dimension Tolerances:

Casing Pipe		Tolerance
Outside Diameter	Pipe Body	D≤101.60mm，±0.79mm
		D≥114.30mm，+1.0%, -0.5%D
	Coupling	±1%D
Wall Thickness		0, -12.5%t
Weight	Single Lengths	+6.5%,-3.5%
	Carload Lots or Order Quantity	≥18144 kg(40000ib)，0,-1.75%
		＜18144 kg(40000ib)，0,-3.5%

Tensile and Hardness Requirements:

Steel grade	Type	Total elongation under load (%)	Yield strength (Mpa)		Tensile strength (Mpa) min	Hardness max
Steel grade	Type	Total elongation under load (%)	min	max	Tensile strength (Mpa) min	HRC	HBW
H40	–	0.5	276	552	414	–	–
J55	–	0.5	379	552	517	–	–
K55	–	0.5	379	552	655	–	–
N80	1	0.5	552	758	689	–	–
N80	Q	0.5	552	758	689	–	–
M65	–	0.5	448	586	586	22	235
L80	1	0.5	552	655	655	23	241
L80	9 Cr	0.5	552	655	655	23	241
L80	13 Cr	0.5	552	655	655	23	241
C90	1	0.5	621	724	689	25.4	255
P110	–	0.6	758	965	862	–	–

Connection Types, Ends, and Couplings

API 5CT P110 casing tubing utilizes different connection types, ends, and couplings to ensure proper installation and functionality. The most common connection type for casing is the BTC (Buttress Thread and Coupling) connection. BTC connections have a buttress thread design and provide excellent sealing and structural integrity.

Other connection types for P110 casing pipes include LC (Long Round Thread) and SC (Short Round Thread). Premium connections like HYD (Hydraulic) are also available, which offer gas-tight sealing and enhanced performance. Customized connection threads can be provided based on client requirements.

P110 tubing connections have two main types: EUE (External Upset End) and NU (Non-Upset End). EUE connections have an external upset with a larger diameter and thickness than the tubing body. NU connections, on the other hand, have the same diameter and thickness as the tubing body.

Dimensions and Tolerances

API 5CT P110 casing pipes have specific length ranges and tolerances. The length ranges for R1, R2, and R3 are as follows:

R1: 6.10-7.32 meters
R2: 8.53-9.75 meters
R3: 11.58-12.8 meters

The outer diameter tolerance for P110 casing pipes depends on the size. For pipes below 4-1/2 inches, the tolerance is +/- 0.79mm or 0.031 inch. For pipes equal to or above 4-1/2 inches, the tolerance is +1% and -0.5% of the pipe diameter. The wall thickness tolerance is 12.5%.

Imperfections in P110 casing pipes have specific limits. The maximum permissible depth of linear imperfections, both external and internal, is 12.5% of the wall thickness. However, if required, a 5% limit can be adopted for P110 grade.

Octal: A Reliable Supplier

When it comes to sourcing API 5CT P110 casing and tubing, Octal is a reputable supplier in the industry. Octal offers a wide range of P110 casing and tubing options, manufactured through seamless or ERW (Electric Resistance Welding) processes. The outer diameter options range from 2-3/8 inches to 20 inches, with various thicknesses available.

Octal provides different coupling threads, including BTC, LTC (Long Thread and Coupling), STC (Short Thread and Coupling), and premium connection threads. The length options include R1, R2, R3, and customized lengths to meet specific project requirements.

FAQ (Frequently Asked Questions)

Q1: What is the purpose of API 5CT P110 casing tubing?

API 5CT P110 casing tubing is used to provide structural integrity to the wellbore and transport oil and gas from the source rock to the wellhead.

Q2: What are the different connection types for P110 casing pipes?

The different connection types for P110 casing pipes include BTC (Buttress Thread and Coupling), LC (Long Round Thread), SC (Short Round Thread), and premium connections like HYD (Hydraulic).

Q3: What are the length ranges for API 5CT P110 casing tubing?

The length ranges for API 5CT P110 casing tubing are categorized into three options: R1, R2, and R3. R1 has a length range of 6.10-7.32 meters, R2 has a length range of 8.53-9.75 meters, and R3 has a length range of 11.58-12.8 meters.

Q4: What are the dimensions and tolerances for P110 casing pipes?

The dimensions and tolerances for P110 casing pipes include the outer diameter tolerance and the wall thickness tolerance. The outer diameter tolerance depends on the size of the pipe, while the wall thickness tolerance is 12.5%.

Q5: Where can I source API 5CT P110 casing and tubing?

Octal is a reliable supplier of API 5CT P110 casing and tubing. They offer a wide range of options, including different sizes, grades, connection types, and lengths to meet specific project requirements.

Conclusion

API 5CT P110 casing tubing plays a crucial role in the oil and gas industry, providing structural integrity and facilitating the transportation of oil and gas from the source rock to the wellhead. With its various specifications, dimensions, connection types, and tolerances, P110 casing tubing offers versatility and reliability in wellbore applications.

When sourcing API 5CT P110 casing and tubing, it is essential to choose a reputable supplier like Octal, who can provide high-quality products and customized solutions. By understanding the specifications and requirements of P110 casing tubing, you can ensure the success and efficiency of your oil and gas operations.

Remember, API 5CT P110 casing tubing is not just a component; it is a critical element that contributes to the overall performance and safety of oil and gas wells. Choose wisely and invest in the best quality products for your projects.

Click here to learn more about API 5CT P110 casing tubing and its applications.

Disclaimer: The information provided in this article is for informational purposes only and should not be considered as professional advice. Always consult with industry experts and adhere to relevant regulations and standards.