Do you know the characteristics and advantages of premium connection for oil and casing?

At present, there are four main series of premium connection for oil and casing designed and developed in various countries around the world, namely: VM series, Hydrir series, Hunting series, and Tenaris series.

Although different countries and companies have different designs for special fasteners for oil casing, the basic forms are basically the same, mainly to improve the connection strength and sealing performance of the pipe string.

On the other hand, most oil casing premium connection are divided into three parts: the connecting thread part, the anti-torque work table shoulder part and the sealing surface part. Most use API trapezoidal threads to improve the interchangeability of threaded parts.

In the early stages of use of oil well pipes, premium connection were designed for different oil fields, different blocks, and different well conditions, which are highly personalized. However, as well conditions become increasingly complex, the conditions for use of pipelines become more stringent. After comparison, screening and actual testing of various foreign premium connection, more than 10 typical products have been gradually formed, which can basically meet the special needs of current oil fields.

Although various special buckle products can meet the needs of drilling and production under different simultaneous conditions, they all have the following common advantages:

1. The connection strength of the joint can match the strength of the pipe body, and some joints that are even stronger than the pipe body are suitable for deep wells and ultra-deep wells;

2. It has good sealing performance and is suitable for high-pressure gas wells, oil wells and thermal recovery wells;

3. Strong bending resistance, suitable for supporting wells, large displacement wells and horizontal wells;

4. It is easy to fix, can be fastened quickly, and is not easy to perform drilling operations in harsh environments such as deserts and oceans;

5. Good anti-stick performance, can be removed repeatedly without damaging the threads;

6. Strong torque resistance;

7. Good corrosion resistance.