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Tubing Couplings: Regular, Thickened, Flush, Variable Thread, and Extended Length 
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4. Tubing
Couplings: Regular, Thickened, Flush, Variable Thread, and Extended Length
Tubing couplings are essential
components in the process of oil extraction and transportation, primarily used
to connect tubing and ensure the sealing and stability of the tubing system.
Currently, there are various types of tubing couplings available on the market,
including regular tubing couplings, thickened tubing couplings, flush tubing
couplings, variable thread tubing couplings, and extended length tubing
couplings.
Regular tubing couplings are
commonly used and can meet the basic requirements for connection and sealing in
general oil well extraction. Thickened tubing couplings are enhanced versions
of regular couplings, with increased tensile and torsional strength, making
them suitable for high-pressure and complex downhole environments. Flush tubing
couplings feature a flat surface, which facilitates installation and reduces
friction and wear during the process. Variable thread tubing couplings can be
adjusted according to different tubing specifications and have good compatibility.
Extended length tubing couplings are designed for situations requiring longer
connection distances, providing more stable connections.
In the manufacturing process of
tubing couplings, advanced materials and technologies are employed. For example,
high-strength steel and special anti-corrosion coatings are used to
significantly extend the service life and reliability of the couplings.
Precision machining equipment and strict quality inspection ensure the
dimensional accuracy and sealing performance of the couplings.
In practical applications, users
need to select appropriate tubing couplings based on the specific conditions of
the oil well. For instance, in wells containing corrosive gases, couplings with
anti-corrosion coatings should be chosen; in high-pressure oil wells, thickened
tubing couplings are necessary. Additionally, the installation of tubing
couplings is crucial and must be carried out strictly according to operating
procedures to ensure the solidity and sealing of the connections.
With the continuous development of
oil extraction technology, the design and manufacturing technologies of tubing
couplings are also constantly innovating. In the future, more high-performance
and high-reliability tubing coupling products will be introduced to the market,
providing strong support for the sustainable development of the oil industry.
Welcome to the Online Store of
Tianjin Longkailai Petroleum Equipment Co., Ltd.
Execution Standards: API-5CT,
API-5L, API-5B, API 5D
Company Products: Tubing
couplings, tubing collars, thickened tubing couplings, flush tubing couplings,
variable thread tubing couplings, extended length tubing couplings, single-end
threaded tubing couplings, internal thread tubing couplings, tubing connectors,
variable thread tubing connectors, variable diameter tubing couplings, tubing
conversion connectors, tubing coupling stock, tubing nipples, tubing short
sections, thickened tubing nipples, tubing lifting nipples, double male tubing
nipples, heavy-weight tubing nipples/short sections, lifting tubing
nipples/short sections, variable thread tubing nipples/short sections, variable
diameter tubing short sections/nipples, tubing conversion connectors,
single-end threaded tubing nipples, coupling stock, thickened tubing, EUE
thickened petroleum tubing, high-pressure tubing nipples, [casing short
sections], [casing nipples], [double male casing short sections], [double male
casing nipples], [casing variable thread couplings], [casing variable thread
connectors], [external thread casing nipples/short sections], [casing
conversion connectors], [high-pressure casing nipples], [casing thread
protectors (cap)], [casing coupling stock], [finished casing products], casing
couplings, coupling stock, short round thread casing couplings, long round
casing couplings, tapered casing couplings, variable thread casing couplings,
casing connectors, casing collars, variable diameter casing couplings,
eccentric casing couplings, casing conversion connectors, API casing,
single-end threaded casing couplings, coupling stock.
Casing Specifications: 4-1/2”-20”
with thread types such as STC (Short Round), LTC (Long Round), BTC (Trapezoidal
Thread), etc.
Tubing Specifications:
1.05”-4-1/2” with end processing forms NU (Non-Upset) and EU (Upset).
Custom Processing: We can process
couplings, nipples, variable thread connectors, etc., in various lengths and
sizes according to order drawings.
Processing Forms: Straight
connection tubing nipples/connectors, PIN * PIN (double male nipples), PIN *
BOX (male-female finished nipples), BOX * PIN (female-male finished nipples).
Materials: H40, J55, K55, N80,
L80, C-90, C95, T95, P110, Q125, 13Cr-80, 13Cr-110, Super 13Cr, Nickel-based
alloy tubing, etc.
Drill Pipe Specifications:
2-3/8”-6-5/8”, etc.
Thickening Forms: Internal
thickening, external thickening, internal and external thickening. Custom-made
products such as drill pipe variable thread connectors, drill pipe nipples,
double male drill pipe nipples, and drill pipe conversion connectors in various
lengths according to orders or drawings.
Materials: E-75, X95, G105, S135,
etc.
Company Philosophy: We adhere to
the management philosophy of people-oriented and customer-first. Based on
advanced equipment and scientific management, we provide high-quality products
for customers. With a complete marketing network and service system, we ensure
satisfactory service for customers. Let's join hands to create a brilliant
future!
Size:4-1/2”~20”
Material
Grade:J55\K55\N80\L80\P110\Q125\L80-3Cr\L80-9Cr\L80-13Cr
Thread Type:STC\LTC\BTC\Premium Connection
Length:R3(10.36-14.63m)
Product Description
Size Outside Diameter(mm) Wall Thickness(mm)
4-1/2” 114.30 5.21-8.56
5” 127.00 5.59-12.7
5-1/2” 139.70 6.20-22.22
6-5/8” 168.28 7.32-12.06
7” 177.80 5.87-22.22
7-5/8” 193.68 7.62-19.05
7-3/4” 196.85 15.11
8-5/8” 219.08 6.71-14.15
9-5/8” 244.48 7.92-20.24
10-3/4” 273.05 7.09-20.24
11-3/4” 298.45 8.46-14.78
13-3/8” 339.72 8.38-13.06
16” 406.40 9.53-16.66
18-5/8” 473.08 11.05
20” 508.00 11.13-16.13
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