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Geological Engineering: Proceedings of the 1st International Conference (ICGE 2007)
Baosong Ma
Baosong Ma
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So far, Pu-Guang gas field is the largest gas field of marine facies which has been found in china. The practice showed that the conventional mud drilling techniques can not meet the requirement of rapid exploitation need of Pu-guang gas field. The air drilling, nitrogen drilling and air percussion drilling have been introduced in the upper continental facies of Pu-guang gas field, and gas drilling test and application has successfully expanded to Xu-jia-he formation. Compared with conventional mud drilling, penetration rate of gas drilling increase 3∼8 times, and the time for single well drilling decreased 60∼90 days. Serious leakage, borehole deviation, and other complex issues were controlled very well, and drilling efficiency increased quite significant. Gas drilling technology has been a core technique of speeding up Pu-guang gas field exploitation, and that is worth popularizing application in Pu-guang and around area.

Technical Problems and Development Requests for Previous Drilling Practices in Pu-guang
Typical Application of Underbalanced Drilling Technology in Pu-guang Gas Field
Comparative Analysis of the Speed-Up Effect of Underbalanced Drilling with Conventional MUD Drilling
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