TA's tensile strength is also 1.5-2 times that of other alloy partners, making it safer and more durable when drilling underground. It is particularly suitable for drilling operations in complex well conditions such as ultra deep wells and short radius wells in Northwest Oilfield.
In recent years, in order to improve crude oil recovery, reduce oil and gas field development costs, and extend the development life of oil and gas fields, there have been more and more complex structured wells, such as large displacement wells, short radius wells, and old wells with window opening and lateral drilling horizontal wells. Conventional drill pipes have encountered some difficult problems when applied in these complex structured wells. In ultra short radius horizontal wells, the wellbore curvature is very small (<18m), which causes significant alternating stress in conventional drill rods. The occurrence of fatigue fracture of drill pipes caused by alternating stress is common, resulting in significant losses to the oil field. To solve these problems, foreign countries have started to develop new materials, such as titanium alloy drill rods, aluminum alloy drill rods, composite drill rods, etc., to replace conventional drill rods.
The laboratory has confirmed that when the cyclic stress is between 30000psi-40000psi, the fatigue life of titanium is 10 times that of ordinary steel. The elasticity coefficient of titanium alloy pipes is about 16.5psi, which is better than steel drill pipes and more suitable for high curvature wellbore sections. At present, titanium alloy drill rods with good economic efficiency have been produced. The material is Ti-6Al-4V pipe body, which is formed by upsetting at both ends and welding tool joints at both ends. The size of the titanium pipe body meets the API standard, and the length range is within the range 2 or 3 specified by the API standard. To reduce manufacturing costs, the tool joints are made of steel, and the joint threads are run in with upper and lower buckles. The outer diameter of the joint is welded with wear-resistant bands. Titanium alloy drill rods are also used in ultra deep wells and high displacement wells. Due to the low density of titanium alloy, it can reduce the hook load by 30%, reduce torque by 30-40%, significantly improve the tension margin and safety factor of drilling tools, and enhance the ability to handle complex accidents.
In daily environments, the service life of titanium alloy drill pipes is 10 times that of conventional steel drill pipes of the same specifications; In corrosive environments, it is 100 times higher than conventional steel drill rods.
In addition to drilling rods, offshore oil platform supports, heat exchangers, pumps, valves, etc. are widely used in the fields of oil extraction and refining.
For example, the North Sea oil drilling platform in the United States uses 100 titanium heat exchangers; The Heidurum project in Norway utilized the world's * titanium high-pressure vertical shaft.
Titanium is reliable 002: Titanium is more corrosion-resistant and has a longer service life
The corrosion of structural components caused by biological pollution on offshore oil extraction platforms is quite severe. Often making traditional metal manufacturing equipment "half dead"
However, the surface of titanium has a naturally formed, dense, inert, rust resistant, and corrosion-resistant oxide film that can easily resist corrosion from seawater, sulfuric acid, and petrochemicals without the need for additional anti-corrosion treatment.
Titanium alloy components can help oil drilling enter deeper waters and deeper oil wells, including higher temperatures and production environments with severe corrosion (i.e., high salt).
With titanium, drilling platforms only focus on exploration and are not afraid of anything!
Most of China's natural gas resources are sulfur-containing gas fields, such as the Tarim Basin in Xinjiang and the Sichuan Basin, which belong to high sulfur gas fields. The anti-corrosion and long-term service under high temperature and high pressure conditions of pipes in high H2S2 and C2O2 oil and gas fields are difficult issues in oil and gas development. Currently, selecting high-quality corrosion-resistant materials as pipes has become the dominant trend. Titanium alloys, with their excellent resistance to pitting corrosion, are used in high sulfur environments, especially in harsh working conditions where the Cl and H2S content is high. Stainless steel and even nickel based alloys are prone to corrosion.
Titanium is reliable 003: Titanium is lighter and more flexible in operation
Although titanium alloy rods are more powerful than steel rods
However, titanium alloy rods are even lighter, with a weight of almost half that of steel for the same volume
Because the titanium rod is lighter, the drilling torque is reduced by nearly 50%, and the load on the top drive on the ground is correspondingly smaller (PS: smaller force, deeper and more stable drilling), making the equipment less prone to damage.
So, titanium rods are powerful and lighter, which can save more effort, fuel, and equipment.
The titanium alloy rod, when used, is simply
One capital, ten thousand profits, steel brothers
Chemical titanium, titanium is reliable!