Research on Super High Presure Jet Drilling Technology with High Discharge
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    Abstract:

    In order to enhance penetrate seed bettly, super high pressure jet drilling technology with high discharge is researched.Based on drilling geologic environment of Tarim basin, the super high pressure jet drilling scheme with high discharge & adequate bit pressure drop is proposed, and drilling rig is upgraded,to meet need for high pressure jet drilling scheme with high discharge. Based on drilling scheme, discharge capacity and bit pressure drop is optimized, and hydraulic compute software is programmed. Based on which, drilling parameters and drilling fluid performance parameters are also optmized. The result is used in five wells, and comparaed with conventional technology, penetartion rate with super high pressure jet drilling technology can be enhanced by 50%~260%,and drilling time can be reduced by 38%~58%. Drilling sticking problem can also be reduced obviously, and wellbore quality is better, as well as penetration rate and drilling efficiency are obviously enhanced.

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  • Received:July 31,2012
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