Casing Pup Joints
Casing Pup Joints
Introduction
Casing pup joints are short lengths of casing used in the oil and gas industry to adjust the length of the casing string to fit specific well requirements. They are essential for ensuring the proper placement of casing collars, landing nipples, and other downhole equipment.
Overview
Pipe Type:Pup Joints,Casing Pup Joints,Tubing Pup Joints:NUE/EUE Tubing Pipe,Perforated Pup Joints, tubing Pup Joints
Outside Diameter ：2-3/8”（60.3mm） – 4-1/2(114.60mm)
Lengths :2,3,4,6,8,10 12 ft
Casing Couping : 4-1/2” – 20′
Lengths:2,3,4,6,8,10 12 ft
Surface: Coating
Grades:J-55, N-80, N-80Q & T, L-80, P-110
Standard:API 5CT and 5B J55,K55,N80-1,N80-Q,P110, C95
Thread: BTC, LTC, STC
Special Service :Sweet Service, Sour Service, Anti-H2S, NACE MR0175/ISO15156
Tubing Pup Joints:
•Sizes: 2 ⅜” – 4 ½”
•Weight: Standard or Requested Weights
•Typical Lengths: 1, 2, 3, 4, 6, 8, 10, 12′ (other lengths available upon request)
•Grades: J-55, N-80, L-80, P-110
•Connections EU (external-upset) and NU (non-upset)
•Options: Custom Sizes, Markings, Paint, Plating, and Inspection available on request
Casing Pup Joints:
•Outside Diameter: 4 ½” – 13 3/8″
•All weights available
•Typical Lengths: 1, 2, 3, 4, 6, 8, 10, 12′ (other lengths available upon request)
•Grades: H40, J55, K55, N80, L80 T95, C110, P110, Q125
•Connections: SC, LC, BC, Semi Premium, and Premium
•Options: Custom Sizes, Markings, Paint, Plating, and Inspection available on request
Pup Joint Options:
•Pin x Pin
•Pin x Pin with Couplings Loose
•Coupling Box x Pin with Couplings Hand Tight
•Coupling Box x Pin with Couplings Bucked-On
Definition
Casing pup joints are shorter segments of casing pipe, typically ranging from a few feet to several feet in length. They are used to adjust the length of the casing string, allowing for precise fitting and alignment of the casing components.
Specifications
- Diameter: Matches the diameter of the casing string, typically ranging from 4.5 inches to 20 inches.
- Length: Varies, commonly available in lengths of 2 feet, 4 feet, 6 feet, 8 feet, 10 feet, and 12 feet.
- Material Grade: Matches the grade of the casing, such as H-40, J-55, N-80, and P-110.
- Thread Types: Includes API round threads, API buttress threads, and premium connections.
Functions
- Length Adjustment: Allows for precise adjustment of the casing string length to ensure proper placement of downhole equipment.
- Connection: Provides a means to connect the casing to other downhole components.
- Flexibility: Offers flexibility in the design and installation of the casing string.
Applications
- Depth Adjustment: Used to adjust the total depth of the casing string to ensure it reaches the desired depth in the wellbore.
- Equipment Placement: Ensures the correct placement of casing collars, landing nipples, and other downhole tools.
- Wellhead Adjustment: Helps in aligning the casing string with the wellhead equipment.
Types of Casing Pup Joints
Standard Pup Joints
Standard pup joints are typically used for general length adjustments in the casing string. They are manufactured to standard lengths and specifications.
Custom Pup Joints
Custom pup joints are made to specific lengths and specifications as required for particular well conditions or operator preferences. These are often used when standard lengths do not meet the precise requirements of the well design.
Manufacturing Process
- Material Selection: High-quality steel is selected based on the required specifications and performance criteria.
- Cutting: Steel pipes are cut to the desired length.
- Threading: Threads are machined at both ends of the pup joint to match the casing string connections.
- Inspection: Includes non-destructive testing (NDT) such as ultrasonic testing, magnetic particle inspection, and dimensional verification to ensure quality and performance.
- Heat Treatment: Enhances the mechanical properties of the pup joint, such as strength and toughness.
Example Specifications
A typical casing pup joint might have the following specifications:
- Diameter: 9.625 inches
- Length: 4 feet
- Grade: N-80
- Thread Type: API Buttress Thread
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Specification
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Tubing Pup Joint Specifications Outside Diameter 1.05 ~ 4-1/2 in (26.67 ~ 114.3 mm) nominal size OD Weight Standard or Heavy Wall Length 2, 3, 4, 5, 6, 8, 10, 12 ft (with other lengths available upon request) Grade H40, J55, L80, N80/Q, C90, T95, P110 Connection EUE, NUE Standard API 5CT, API 5B Casing Pup Joint Specifications Outside Diameter 4-1/2 ~ 20 in (114.3 ~ 508 mm) nominal size OD Weight Standard or Heavy Wall Length 2, 3, 4, 5, 6, 8, 10, 12, 14, 16, 18, 20 ft (with other lengths available upon request) Grade H40, J55, K55, L80, N80/Q, C90, T95, P110, Q125 Connection BTC, STC, LTC Standard API 5CT, API 5B Parameters
Product: Pup Joint, OCTG Pup Point Application: Pipe Cut into different 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 Service Sweet Service, Sour Service, Anti-H2S, NACE MR0175/ISO15156 Packing: By carton, wooden case, wooden pallet or requirement of customer Diameters: .75″ through 4.5″ nominal O.D. Weights: Standard or Heavy Wall Lengths: 2, 3, 4, 6, 8, 10, 12 ft. Standard (Lengths up to 20′ available upon request) Grades: J-55, N-80, N-80 Q & T, L-80, P-110, 13-CR and other premium grades Connections: EUE, NUE, Buttress SPECIFICATIONS TUBING PUP JOINT OD GRADE END TYPE LENGTH(FT) 2 3/8″ J/K/L/N/P NUE/EUE 2/3/4/5/6/8/10/12 2 7/8″ J/K/L/N/P NUE/EUE 2/3/4/5/6/8/10/12 3 1/2″ J/K/L/N/P NUE/EUE 2/3/4/5/6/8/10/12 4 1/2″ J/K/L/N/P NUE/EUE 2/3/4/5/6/8/10/12 CASING PUP JOINT OD GRADE END TYPE 4 1/2″ J/K/L/N/P LTC/STC/BTC 5″ J/K/L/N/P LTC/STC/BTC 5 1/2″ J/K/L/N/P LTC/STC/BTC 6 5/8″ J/K/L/N/P LTC/STC/BTC 7″ J/K/L/N/P LTC/STC/BTC 7 5/8″ J/K/L/N/P LTC/STC/BTC 7 3/4″ J/K/L/N/P LTC/STC/BTC 8 5/8″ J/K/L/N/P LTC/STC/BTC 9 5/8″ J/K/L/N/P LTC/STC/BTC 10 3/4″ J/K/L/N/P STC/BTC 11 3/4″ J/K/L/N/P STC/BTC 13 3/8″ J/K/L/N/P STC/BTC
Production process
A casing pipe is a hollow steel tube that is typically rammed into place through the earth by using a hydraulic or pneumatic jack. After being driven, the displaced soil is removed and the product pipe, or carrier pipe, is inserted inside the steel tube. Available Sizes Category:ERW, HFW or SMLS Standards:API 5CT PSL1/PSL2 J55,K55,N80-1,N80-Q,API 5CT PSL1/PSL2 L80-1, L80-9Cr,L80-13Cr,C90, C95, P110, Q125 Steel Grade:H40, J55, K55, N80
Tubing and casing pup joints are crucial components in the oil and gas industry for adjusting the length of tubular strings to precise measurements required for specific downhole operations. They are manufactured to meet stringent API 5CT standards, ensuring reliability and performance in various operational conditions. The seamless construction, rigorous testing, and quality finishing processes ensure these pup joints meet high industry standards for safety and efficiency.
H40 casing steel pipes are essential components in the drilling and production of oil and gas wells. These pipes are manufactured to meet API Spec 5CT standards, ensuring quality, performance, and reliability. Through rigorous manufacturing processes, precise dimensions and tolerances, and comprehensive testing, H40 casing pipes deliver dependable performance in various drilling and production environments.
The American Petroleum Institute specification API 5CT J55 Pipe is designed for use in the oil and gas industry. API 5CT J55 is a commonly used petroleum casing pipe material. It is produced according to the API 5CT standard and used in a variety of well types, both oil and natural gas. The main purposes of using casing or tubing are to protect the wellbore from collapse and to provide a conduit for well fluids. The casing is placed in the well first, followed by tubing, which is often smaller in diameter and thus can be nested inside the casing. Both casing and tubing must be made from strong materials that can withstand the high pressures and temperatures encountered deep underground. API 5CT J55 meets these requirements and is, therefore, an excellent choice for OCTG (oil country tubular goods) applications. It is typically produced as seamless steel pipe, but can also be procured in welded form. API 5CT J55 has a relatively high yield strength and good fatigue resistance, making it an ideal choice for high-pressure, high-load applications such as petroleum products.
API 5CT K55 is a pipe grade specified by the American Petroleum Institute. API 5CT K55 is a type of well casing that is typically used in well drilling operations. The casing and tubing are OCTG (oil country tubular goods) that are used to form the walls of the well. The steel pipe is placed in the well and held in place by cement. The cement helps to protect the well from collapse and keeps the well fluids from escaping. API 5CT K55 is a popular choice for well drilling because it is durable and can withstand high temperatures and pressures.
M65 casing pipe is a crucial component in the drilling and production of oil and gas wells. It is manufactured to meet API 5CT standards, ensuring quality, performance, and reliability. Through rigorous manufacturing processes, precise dimensions and tolerances, and comprehensive testing, M65 casing pipe delivers dependable performance in various drilling and production environments.
