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FAST CONVERSION TECHNOLOGY OF LIQUID AND GAS IN GAS DRILLING IN HUBEI YUDONG AREA

Zhang Liang-wan

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Abstract

Compared with conventional drilling fluid drilling,gas drilling has the advantages of fast speed,short cycle and low cost.But after the gas drilling finished,for the performance of drilling fluid couldn't meet dry downhole conditions and the conversion technology was unreasonable during the transforming gas medium into liquid medium,the downhole complex or accident were often occurred.To solve the sidewall stability,borehole flow and anti-collapse and other issues in Hubei Yudong area during transforming gas drilling into drilling fluid,the gas /fluid conversion technology and hole cleaning measures were proposed.The gas /fluid conversion technology has been applied in 40 wells,avoiding the hole blow,ensuring the drilling safety,quality and speed,and protecting the resources and the environment.

About this research paper

What this paper is about

Compared with conventional drilling fluid drilling,gas drilling has the advantages of fast speed,short cycle and low cost.But after the gas drilling finished,for the performance of drilling fluid couldn't meet dry downhole conditions and the conversion technology was unreasonable during the transforming gas medium into liquid medium,the downhole complex or accident were often occurred.To solve the sidewall stability,borehole flow and anti-collapse and other issues in Hubei Yudong area during transforming gas drilling into drilling fluid,the gas /fluid conversion technology and hole cleaning measures were proposed.The gas /fluid conversion technology has been applied in 40 wells,avoiding the hole blow,ensuring the drilling safety,quality and speed,and protecting the resources and the environment.

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Available abstract

Compared with conventional drilling fluid drilling,gas drilling has the advantages of fast speed,short cycle and low cost.But after the gas drilling finished,for the performance of drilling fluid couldn't meet dry downhole conditions and the conversion technology was unreasonable during the transforming gas medium into liquid medium,the downhole complex or accident were often occurred.To solve the sidewall stability,borehole flow and anti-collapse and other issues in Hubei Yudong area during transforming gas drilling into drilling fluid,the gas /fluid conversion technology and hole cleaning measures were proposed.The gas /fluid conversion technology has been applied in 40 wells,avoiding the hole blow,ensuring the drilling safety,quality and speed,and protecting the resources and the environment.

Key concepts: Drilling, Petroleum engineering, Drilling fluid, Borehole, Underbalanced drilling, Measurement while drilling, Engineering, Mechanical engineering

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FAST CONVERSION TECHNOLOGY OF LIQUID AND GAS IN GAS DRILLING IN HUBEI YUDONG AREA — Research Paper | ScholarLens