循环接头技术参数如下
钻杆母螺纹 |
套管螺纹 |
水眼mm |
长度mm |
NC38 |
5″偏梯扣BTC |
57 |
400 |
5″长圆扣LTC |
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5″短圆扣STC |
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NC38 |
5″偏梯扣BTC |
57 |
400 |
5-1/2″长圆扣LTC |
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5-1/2″短圆扣STC |
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NC50 |
7″偏梯扣BTC |
71 |
460 |
7″长圆扣LTC |
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7″短圆扣STC |
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NC50 |
9-5/8″偏梯扣BTC |
71 |
460 |
9-5/8″长圆扣LTC |
|||
9-5/8″短圆扣STC |
|||
NC50 |
10-3/4″偏梯扣BTC |
71 |
480 |
10-3/4″长圆扣LTC |
|||
10-3/4″短圆扣STC |
|||
NC50 |
13-3/8″偏梯扣BTC |
71 |
480 |
13-3/8″长圆扣LTC |
|||
13-3/8″短圆扣STC |