API 5CT Casing, Tubing, Coupling, Pup Joint

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Posted On

6-Mar-19

Product Details

The API casing is generally used for the borehole wall support in the drilling as well as after the completion of a well, so as to make sure the smooth running of the drilling process and also the normal procedure of the whole oil well after well completion. As a result of the advancement in recent years, making use of the product is much more substantial. It is generally utilized in oil, gas, coal bed methane, water system, thermal electrical power generation, hydropower penstock, thermal electrical power generation, dredging design, as well as other sectors.

This product generally makes use of smooth steel pipeline as the raw product. Some large diameter and special wall thickness items make use of straight seam pipeline as the pipeline body. The body should be processed with screw strings at both ends. One end is linked to the combining, while the other end is equipped with the string protector. Thread as well as coupling link are used between the casings. In addition, the pipe body of various steel qualities ought to correspond to different couplings.

Production criterion: API Spec 5CT
1. Steel quality: J55, K55, L80, N80, P110
2. External size: 4 1/2″, 5″, 5 1/2″, 6 5/8″, 7″, 7 5/8″, 9 5/8″, 10 3/4″, 13 3/8″, 16″, 18 5/8″, 20″
3. Wall density: 5.21 – 16.13 mm
4. Thread kind: SC( Short round string), LC( Long round thread), BC( Buttress string).
5. Length: R1( 4.88-7.62 m), R2( 7.62-10.36 m), R3( 10.36-14.63 m).

The API tubing is defined as a pipe that drops right into the wells for the production or injection of fluids. In oil expedition, it drops hole to remove underground oil or gas, depending on threaded link. It normally travels through the oil casing, which plays a role of protection and also seclusion.

The tubing dimension in API standard is 1.05 “- 4 “. Our manufacturing array is 2 3/8 “- 4 1/2″ (60.32 mm – 114.3 mm). The pipe produced within this variety is used most regularly in oil and also gas exploration.

1. Specification: API SPEC 5CT.
2. Steel quality: J55, K55, N80, L80, P110, etc.
3. Outdoors diameter: 2-3/8″, 2-7/8″, 3-1/2″, 4″, 4-1/2”.
4. Wall thickness: 4.24 mm – 16.0 mm.
5. Product type: Non-upset tubing (NU), External distressed tubing (EU), Integral joint tubing (IJ).
6. Length: R1( 6.10-7.32 m), R2( 8.53-9.75 m), R3( 11.58-12.80 m).
7. String type: Round thread( 8RD, 10RD).

Casing Coupling

API Round Thread Casing Coupling
a. The dimension classification for the coupling is the same as the size designation for the pipe on which the coupling is used.
b. Groups 1, 2 as well as 3-Tolerance on outdoors diameter W: +_ 1 % however not more than +_ 3,18 mm.
c. Group 4-Tolerance on outside size W: +_ 1 % yet not above + 3,18, -1,59 mm.
d. Tolerance on diameter of recess, Q, for all teams: + 0,79, 0 mm.

API Buttress Thread Casing Coupling
a. The dimension classification for the coupling is the same as the size classification for the pipeline on which the coupling is made use of.
b. Groups 1, 2 and also 3: Tolerance on outdoors diameter W: +_ 1 % but not higher than +_ 3,18 mm.
c. Group 4: Tolerance on outdoors size W: +_ 1 % yet not more than + 3,18 -59 mm.
d. Groups 1, 2 and 3: Tolerance on outside diameter Wc: + 0,79, -0,40 mm.

The casing coupling is utilized to attach 2 coverings.
1. Steel grade: J55, K55, N801, N80Q, L80 1, L80 9Cr, L80 13Cr, C90, T95, P110, Q125, and so on
2. Specification: 4-1/2, 5, 5-1/2, 6-5/8, 7, 7-5/8, 8-5/8, 9-5/8,10 -3/ 4, 11-3/4, 13-3/8, 16, 18-5/8, 20, etc.
3. Thread type: Long round thread (LC), brief round string (STC), buttress thread (BC), unique string, and so on. As a China-based casing coupling producer and vendor, our firm provides a broad variety of products that consists of tubing coupling, NUE API tubing, J55 API casing/ tubing, slotted pipe, and more.

Tubing Coupling

API Non Upset Tubing Coupling See additionally Figure D. 4 of API Spec. 5CT.
a. The dimension classification for the coupling coincides as the size

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