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Drill Pipe with High Build-up Rate for Compound Drilling
Add Time:2017-02-16 11:18:04 Views:
Drill Pipe with High Build-up Rate for Compound Drilling

165mm drill pipe with high build-up rate for compound drilling is a brand new downhole motor for enhancing rate of penetration on build section of horizontal well. Under the design of build-up rate of 3-7°/30m for the build section, it is able to reduce directional penetration (directional build-up rate with 6-12°/30m) and to increase compound drilling penetration (compound drilling build-up rate with 2-3°/30m) so as to improve entire rate of penetration.

Su 53-XX-XXH1 is a horizontal well located at northwest Sulige gas field where the structure with the middle part of Sulige gas field on north slope at north Shaanxi in Ordos Basin is aimed at Shanxi Team.

On Sep. 30th of 2015, Orient 7LZ-165-6-1.5 drill pipe ran into the hole with the well depth of 2895m and drilled the second section of build-up well section. On Oct. 9th of 2015, the drill pipe ran into gas layer and the middle A target finished drilling. During the drilling, totally a piece of 7LZ-165-6-1.5 drill pipe had been used with 757m of footage, 127 hours of net drilling and 5.96 m/h of average rate of penetration.

165mm 7LZ-165-6-1.5 downhole motor is capable of achieving 3°/30m at build-up section of horizontal well and fulfilling 6-9°/30m of build-up rate during sliding drilling so that it reduces directional build-up section, increases compound drilling section, smoothes borehole trajectory, improve penetration rate, and lower the difficulty of consequent work. Hence, 165mm 7LZ-165-6-1.5 downhole motor can satisfy the requirements of Su 53 block for increasing drilling speed, reducing drilling-in period and saving drilling cost.