We kindly offer the free operation training to clients who purchase Yuanheng product.

The training content varies to the different need of the customers. Generally speaking, our customer training mainly includes followings:

1 Contents and purpose:

1）Learn and master the use, working environment, working principles, structure, disassembly, maintenance, requirements of test and operations of the tools fixed in contract(No. GW101), 

2）Basic requirement of designs of tool strings and of testing operation.

3）Brief introduction on the development of DST.

2 Intended effect：

1）Each trainee could describe working principles and structure of tools and could disassembly, maintain and test independently 

2）Known well on the following points: check before use, cautions when using, operations on ground, process of deblocking and pulling up and ground working of disassembly and checking.

3）Aquire general ideas on basic requirement of designs of tool strings and of testing operation 

4）Aquire general ideas on DST development.

3 Training effect test

After training, we will arrange theory and site operation test. The qualified trainees will acquire the qualification certificate issued by  

 

 

Quality control of the raw material:

1)The selection of the raw material supplier：our raw materials mainly include alloy structural steel, stainless steel, non-ferrous metal alloy and high nickel alloy, etc, in the selection of the raw  material suppliers, we would do the comprehensive assessment of the supplier strictly according to technical requirements .Most of our suppliers are the leading enterprises of the steel production in China , such as the DAYE SPECIAL STEEL CO., LTD , XI NING SPECIAL STEEL CO.,LTD etc. While the special alloy are usually purchased from abroad to ensure a higher mechanical properties.

2) The acceptance & Inspection of the raw material:

Ultrasonic flaw detection for every piece of the steel.

Chemical composition analysis, for every piece of the steel.

Mechanical performance test for every piece of the steel.

Only the above three items are qualified can the raw material be printed qualified logo and accepted as the qualified raw materials.

2、Quality control of the seals:

1) O Rings: 100% visual and dimensional inspection for every piece of the O-rings ,15% spot check for the size and hardness test of the o rings. As for the sealing and heat resistance properties of the o rings, we designed a special test device which is equipped with a heating insulation equipment that can simulate the downhole temperature and pressure. At present, our fluorine can keep a good performance  in the condition of 210 ℃, and 105 Mpa work pressure (maximum pressure ever reached 146).

2) Back-up ring: 100% visual and dimensional inspection for every piece of the back-up ring, As for the test of the sealing and heat resistance, we design and manufacture the special test device, equipped with heating insulation equipment to stimulate the downhole temperature and pressure for acceptance. At present, our company's high pressure back-up seal  can keep good sealing performance and deformed a little in the condition of 210 ℃, and 105Mpa work pressure (maximum pressure ever reached 146). It can be used for many times.

3. Quality control of the spring: Apart from the conventional test of the raw material and size of the different springs that used in the tools, we specially designed a test device that equipped with a heating preservation equipment to stimulate the downhole temperature and condition to test the spring performance.

4. Quality control of the spare parts processing:

1) Spare parts processing control：In strict accordance with the process and traceability requirements, a test, mark and record of dimension, geometric tolerance and for every piece and every procedure will be conduct.

2) Heat treatment quality control: We have two high temperature heat treatment furnaces that are mainly used for stainless steel and other special material heat treatment. For other materials, we entrust Baoji Petroleum Machinery Company Heat Treatment Plant to do the heat treatment.   For the inspection of the heat treatment, we are equipped with the special inspection machine such as gantry hardness tester, digital universal tensile tester etc.;

5. Quality control of the tool assembly and testing process

1) Test equipment: in addition to the conventional hydraulic test pump, tensile testing machine, we also have a pressure sensor and data acquisition system which can accurate and clear record each step of the test.

2) Technical documents: We have a test acceptance list for every tool test that clearly guides the each step of the test.

3) Assembly test: A special inspector will supervise the whole assembly process.