Abstract China's technology in shale gas drilling is constantly refreshing records, and the prospects of the diamond industry chain are improving. The drilling cycle of Changning H2-7 well under PetroChina was shortened to 48.83 days, and the average drilling cycle of single well was shortened by nearly 20 days. Drilling is greatly accelerated due to drilling
China's technology in shale gas drilling is constantly refreshing records, and the prospects of the diamond industry chain are improving. The drilling cycle of Changning H2-7 well under PetroChina was shortened to 48.83 days, and the average drilling cycle of single well was shortened by nearly 20 days. The sharp increase in drilling speed is due to the maturity of drilling templates. It shows that the advantages of China's drill technology become more and more obvious, and the demand for diamond drill bits is expected to surge.
Previously, China's first shale gas level Jingwei 201-H1 well was drilled for 133 days. From the original 133 days to the current 48.83 days, the continuous shortening of the drilling cycle reflects the maturity of domestic shale gas in the field of drilling technology, and the continuous improvement of the drilling template plays a key role. Through many trials and summaries, Chuanqing Drilling determined that the rotary orientation system was used to save the drilling orientation time, and the drilling assembly of “PDC drill bit (polycrystalline diamond composite piece) + curved screw + rotary guide†was determined to create the drilling machine month. The fastest shale gas drilling record at 2,764.13 m / month.
The Changning-Weiyuan block in Sichuan is a key block in the field of CNPC shale gas mining. With the maturity of drilling templates, it is expected to be promoted throughout the system in the future, and the demand for PDC bits is expected to increase significantly. Since the beginning of this year, PetroChina's shale gas mining has accelerated significantly. At present, PetroChina Southwest Oil and Gas Field Company has identified the basic plan for shale gas pipeline transportation in Changning and Weiyuan Districts of Sichuan, and more than 100 new wells are rapidly advancing. At present, 9 wells in the Changning-Weiyuan block have been put into trial mining, with an accumulated gas production of more than 80 million cubic meters. The PetroChina Southwest Oil and Gas Field will build more than 20 working platforms and drill more than 110 new wells. It is expected that another 8 new wells will be put into operation this year. All drills will be carried out before the end of July. According to relevant plans, the annual output of PetroChina's shale gas will reach 300 million cubic meters.
Due to the preferred PDC bit in the drilling template, as the number of drilling in domestic shale gas wells continues to increase, the demand for PDC bits and upstream PCD (polycrystalline diamond) is expected to increase, and related companies in the diamond industry chain are expected to benefit. PDC drill bits can only be used in soft shale formations at first because hard interlayers can damage the drill bit. With the advent of new technologies and structural changes, PDC bits have been able to be used to drill hard interlayers and long sections of hard rock formations. In addition, through the design of the drill bit and the improvement of the teeth, the directionality of the PDC bit is also increased, which further weakens the advantages of the roller bit.
The Yellow River Cyclone is a leading domestic producer of super-hard composite materials, and the company is expected to benefit from the replacement of traditional hard alloys by super-hard composite materials. At present, the company has an annual production capacity of 12 million geological mineral drilling grade super-hard composite materials, and actively promotes the research and development and marketing of oil and natural gas composite sheets. The company has been able to produce PDC bits on a small scale. In the future, as technology and market continue to mature, PDC bits are expected to be mass-produced. Sifangda is a leading enterprise in the production of diamond polycrystalline composite materials in China. At present, the company has been able to mass produce fine oil tablets and natural gas composite sheets in PDC materials, and has strong competitive strength. In addition, the company's first quarter report this year showed that the company used super-raised funds to promote the industrialization project of polycrystalline diamond composite chip picks and down-the-hole drill bits, and it is expected to expand to the upstream and downstream of diamonds in the future.
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