转换接头在石油、天然气和地质钻井作业中起钻柱构件的转换连接作用,是连接上部钻具与下部钻具的主要工具之一,分钻柱转换接头和油管转换接头。A型(同径式)、B型(异径式)和C型(左旋式)。在钻井过程中,下部钻具的扣型与上部钻具的扣型连接不上,这就需要用转换接头来连接。
钻柱转换接头技术参数
名称Denotation | 上部连接件 Upper Connection Part | 下部连接件 Lower Connection Part | 型 式 Type |
方钻杆转换接头 Kelly Cross-over Joint | 方 钻 杆 Kelly | 钻 杆 接 头 Drill pipe joint | A or B |
钻杆转换接头 Drill Pipe Joint | 钻 杆 接 头 Drill Pipe Joint | 钻 杆 接 头 Drill Pipe Joint | A or B |
过渡转换接头 Crossover Joint | 方 钻 杆 Kelly | 钻 铤 Drill Collar | A or B |
钻铤转换接头 Drill Collar Joint | 钻 铤 Drill Collar | 钻 铤 Drill Collar | A or B |
钻头转换接头 Bit Joint | 钻 铤 Drill Collar | 钻 头 Bit | A or B |
水龙头转换接头 Swivel Joint | 水龙头下接头 Swivel Lower Joint | 方 钻 杆 Kelly | C |
打捞用转换接头 Fish Joint | 方 钻 杆 Kelly | 钻 杆 接 头Drill Pipe Joint | C |
钻 杆 接 头Drill Pipe Joint | 打捞工具 Fishing Tool | C |
油管转换接头技术参数
Specification of Tubing Cross- Joint
外 螺 纹 External Thread | 内 螺 纹 Internal Thread | ||||||||
螺纹代号 Thread Code Name | 锥 度 Tapering | 大端直径 Large End Diameter (mm) | 小端 直径 Small End Diameter (mm) | 内径 I.D. (mm) | 螺 纹 代 号 Thread Code Name | 锥 度 Tapering | 大端直径 Large End Diameter (mm) | 小端直径 Small End Diameter (mm) | 内径 I.D. (mm) |
1.900TBG | 1:16 | 48.3 | 47 | 40.3 | 1.900TBG | 1:16 | 55.9 | 66.1 | 49.9 |
2-3/8TBG | 1:16 | 60.3 | 59 | 40.3 | 2-3/8TBG | 1:16 | 73.0 | 58.1 | 61.9 |
2-7/8TBG | 1:16 | 73 | 70 | 62 | 2-7/8TBG | 1:16 | 88.9 | 70.8 | 74.6 |
3-1/2TBG | 1:16 | 88.9 | 86 | 76 | 3-1/2TBG | 1:16 | 108.0 | 86.7 | 90.5 |
4TBG | 1:16 | 101.6 | 98 | 88 | 4TBG | 1:16 | 120.6 | 98.5 | 103.2 |
4-1/2TBG | 1:16 | 114.3 | 111 | 100.3 | 4-1/2TBG | 1:16 | 132.1 | 111.2 | 115.9 |
4-1/2BCSG | 1:16 | 114.7 | 112 | 100 | 1.900UPTBG | 1:16 | 63.5 | 51.0 | 54.8 |
1.900UPTBG | 1:16 | 53.2 | 51 | 40.3 | 2-3/8UPTBG | 1:16 | 77.8 | 62.8 | 67.5 |
2-3/8UPTBG | 1:16 | 65.9 | 64 | 50.3 | 2-7/8UPTBG | 1:16 | 93.2 | 75.5 | 80.2 |
2-7/8UPTBG | 1:16 | 78.6 | 76 | 62 | 3-1/2UPTBG | 1:16 | 114.3 | 92.2 | 96.9 |
3-1/2UPTBG | 1:16 | 95.2 | 92 | 75.9 | 4UPTBG | 1:16 | 127.0 | 104.9 | 109.6 |
4UPTBG | 1:16 | 108.0 | 104 | 88.6 | 4-1/2UPTBG | 1:16 | 141.3 | 117.6 | 122.3 |
4-1/2UPTBG | 1:16 | 120.6 | 117 | 100.3 |
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