Bohai Drilling Company's BH-VDT series vertical drilling system is internationally advanced (the pulser and Alternator parts and components in this project are provided by our company)

Recently, the results of "Development and Application of BH-VDT Series Vertical Drilling System" completed by PetroChina Bohai Drilling Company passed the appraisal of scientific and technological achievements organized by China Petroleum and Chemical Industry Federation, and was recognized as reaching the international advanced level in general, among which the four-wing sliding push-to-repeat vertical drilling technology of gravel formation has reached the international leading level.

The achievement of "Development and Application of BH-VDT Series Vertical Drilling System" is aimed at the difficult problem of preventing slanting and drilling fast in slant-prone formations, such as deep and ultra-deep wells and the upper part of complex structural wells with large boreholes, high and steep formations, large inclination angles and backward pushing overburden, etc., and the Company has continued to carry out the research on vertical drilling technology and successfully developed the BH-VDT Series Vertical Drilling System, which has effectively solved the world-class technical problem and broken the monopoly of the market by foreign companies, It has effectively solved this world-class technical problem, broken the market monopoly, technology monopoly and price monopoly of foreign companies, which is of great significance to the speeding up of exploration and development of easily inclined blocks in major oilfields in China, and has a broad application prospect for similar blocks at home and abroad.

The main innovations of the BH-VDT series vertical drilling system are as follows: First, the hinged push-to-rest mechanism with active retraction of the push-to-rest wings can effectively reduce the risk of downhole jamming and improve the safety of the system downhole. Secondly, the oil-impregnated contact slide wire ring, which adopts a high wear-resistant wide slide rail design and is used together with a pressure-sealed connector with insulation protection, can effectively ensure the transmission of electrical energy and signals in the rotating state of the BH-VDT series vertical drilling system under the working conditions of high drilling pressure and high torque. The third is the pulser control valve performance test bench, which is mainly used for the performance test of the pulse generator control valve for signal uploading of BH-VDT series vertical drilling systems. It is easy to operate, with accurate and reliable test results, and can provide guarantee for the uploading of downhole data signals of the system.

Since the release of the product, it has been applied more than 100 times in the western oilfields, with a cumulative footage of more than 170,000 meters, a cumulative time in the well of nearly 60,000 hours, an average speed of 4.05 m / h, and an average well inclination of 0.5 °, which shows that the overall performance of the BH-VDT series of vertical drilling system is on a par with that of the similar foreign products. (Reporter Qu Zhaogui, Correspondent Ma Zhe, Liang Hongmei, Zhao Peng)