... interbedded sand 砂岩夹层 interbedded formation 交互层 interbedded strata 互层 ; 互生岩层 ; 互层土 ...
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This paper presents the PDC bits with the satisfactory testing result in the multi-interbedded formation.
介绍了一种复合式PD C钻头，该钻头在多夹层地层钻井施工中取得了较好的试验效果。
According to the optimization design, a new type of PDC bit was produced and got better result when it was used in the multi-interbedded formation.
根据该设计制造的一种新型复合式PDC钻头在多夹层地层中取得了较好的应用效果。
Although more and more PDC bits are used in drilling operation, but the results of drilling in the hard and soft interbedded formation are not desired.
PD C钻头在钻井破岩中所占比例越来越大，但在软硬交错的多夹层地层钻进时效果却不理想。
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