Baoji Dingding titanium | special titanium alloy products for petroleum drilling tools to overcome the performance benchmark of extreme drilling

In extreme drilling scenarios such as shale gas horizontal wells, deep-sea oil and gas fields, and high sulfur gas reservoirs, the drilling tool needs to withstand 180MPa high pressure, H ɑ s strong corrosion and high-frequency vibration impact at the same time, and its performance directly determines the drilling cycle and operation safety. Baoji Dingding titanium, the core enterprise of "China Titanium Valley", focuses on TC4, TC11 and TC18, strictly follows API 5dp and ISO 13680 standards, and through the core process of "multi-directional rapid forging+gradient quenching and tempering", creates titanium alloy products of petroleum drilling tools with tensile strength of 960-1100mpa, providing reliable material solutions for oil and gas exploration and development.

1、 Material breakthrough: performance advantages of tc4/tc11/tc18

Compared with the traditional 35CrMo and 4145H steel drilling tools, TC4, TC11 and TC18 titanium alloys, with their unique crystal structure and alloy ratio, have achieved a qualitative leap in the four core properties, completely solving the industry pain points of "corrosion fracture, fatigue failure and heavy load energy consumption" of steel drilling tools:

Sulfur resistance and corrosion resistance: eliminate SSC failure from the root

The 5-10nm dense oxide film naturally formed on the surface of titanium alloy can effectively isolate high sulfur oil and gas, acid drilling fluid and Cl ⁻ corrosion. The sulfur resistance grade of TC18 reaches SSC C110, and there is no crack in the stress corrosion test for 5000 hours under the working condition of H ɑ s partial pressure of 0.3MPa and temperature of 120 ℃; The corrosion rate of TC4 in 15% hydrochloric acid solution is only 0.0001 mm/year, which is more than 10 times longer than that of 316L stainless steel drilling tool.

High pressure fatigue resistance: suitable for extreme load scenarios

Through composition optimization and process control, three kinds of materials form gradient performance coverage: TC4 tensile strength ≥ 960mpa, meeting the requirements of conventional deep wells; TC11 is lifted to 1000MPa, which is suitable for high temperature and high pressure wells; By virtue of the composition advantage of ti-4.4al-4mo-2sn, TC18 has a tensile strength of more than 1100mpa, no fatigue crack after 10 cycles of load test, and can withstand high-frequency vibration and impact load of drill string. The fatigue resistance limit is 40% -60% higher than that of steel drilling tools.

Lightweight: the core advantage of load reduction and energy saving

The density of titanium alloy is only 4.51g/cm ³, which is 45% less than that of steel drilling tools -- Taking 6-5/8 "drill pipe as an example, the weight of a single drill pipe is reduced from 400kg to 220kg, which directly reduces the load of the drilling rig lifting system by 180kg. Due to the high flexibility of TC18 containing Sn element, the friction loss in the bending section of shale gas horizontal well is reduced by 30%, the comprehensive energy consumption of drilling platform is reduced by 15%, and the wear rate of wellhead equipment is reduced by 25%.

Wide temperature adaptation: covering the whole scene of drilling environment

Based on the synergistic effect of different alloy elements, the full temperature range is achieved: TC4 (Ti-6Al-4V) is stable in the neutral energy of conventional deep wells drilled at -40 ℃ to 400 ℃; TC11 (ti-6.5al-3.5mo-2zr-0.3si) is strengthened by Mo and Zr elements, and its temperature resistance exceeds 550 ℃, which is suitable for deep geothermal drilling; TC18 has no embrittlement and creep in high sulfur gas reservoirs from -40 ℃ deep sea to 350 ℃, which can meet the requirements of multi scene alternate operation.

2、 Core product: accurate matching of materials with drilling requirements

In combination with the characteristics of three major materials and the requirements of different drilling procedures, three series of products of drill pipe, drill collar and tool accessories are created to realize the customized supply of "one well one policy":

3、 Quality control: the whole process conforms to the standards of the petroleum industry

1. traceability of raw materials: high purity sponge titanium ≥ 99.8% is used. The content of Al (4.4%-5.7%) and Mo (4%-5.5%) is strictly controlled by TC18. Each batch of raw materials is attached with an ICP-MS composition report, which can be traced to the origin of the mine;

2. process guarantee: the forging ratio of 2000 tons of multi-directional fast forging machine is ≥ 6:1, TC4 adopts "920 ℃ solid solution+540 ℃ aging", and TC11 adds 800 ℃ high-temperature stabilization treatment to ensure dense and non loose microstructure;

3. inspection and certification: all of them have passed the ultrasonic flaw detection (API class I), water pressure explosion (1.5 times the rated pressure), sulfur stress corrosion (NACE TM0177) test and issued a complete API 5dp compliance report;

4. surface treatment: it can provide customized services such as nitriding coating and polytetrafluoroethylene spraying, improve the anti-wear and anti adhesion performance, and adapt to complex working conditions such as sand containing drilling fluid.

Baoji Dingding titanium: a reliable choice for petroleum titanium alloy drilling tools

The company is located in Baoji high tech Zone, the "China Titanium Valley". It has four special production lines for oil drilling tools, with an annual production capacity of 800 tons. It has passed API 5dp, ISO9001 certification and the qualification review of PetroChina and Sinopec suppliers. The products have been applied to key projects such as Sichuan Chongqing shale gas field and Nanhai deep sea drilling platform, and become the core supplier of titanium alloy drilling tools under extreme drilling conditions.

Technical core TC18 high flexibility molding/tc11 high temperature strengthening

Qualification certification API 5dp/nace tm0177/iso9001

Service commitment 24-hour technical support/drilling condition adaptation

Technical consultation: send well depth/working condition/drilling tool model to 530975155@qq.com , get the material adaptation scheme for free