API Standard Back Off Sub for Stuck Pipe Backoff Operation with Multiple Model Options
Price:
Negotiable
MOQ:
Negotiable
Delivery Time:
10-15 WORK DAYS
Product Description
Back Off Sub, API Standard Oil Well Fishing Tool for Stuck Pipe Backoff Operation
Back Off Sub
Back off sub, also known as back off spear, is a vital downhole fishing tool applied for oil & gas well fishing operations. It serves as an effective alternative to taper taps to conduct fishing and backoff operations during stuck pipe treatment.
When the downhole fish becomes jammed and cannot be backed off successfully, the string can be released at the back off sub. Operators can then trip out the upper drilling assembly safely, allowing subsequent fishing solutions to be run into the well. This tool greatly improves the flexibility of fish recovery and reduces operation risks in well fishing.
Technical Specification
| Model | OD mm (inch) | ID mm (inch) | OAL mm (ft) | Connection |
|---|---|---|---|---|
| ZDK105 | 105 (4-1/8) | 15 (19/32) | 580 (1.9) | NC31LH Box * NC31 Pin |
| ZDK121 | 121 (4-3/4) | 22 (55/64) | 628 (2.1) | NC38LH Box * NC38 Pin |
| ZDK159 | 159 (6-1/4) | 28 (1-7/64) | 690 (2.3) | NC46LH Box * NC46 Pin |
| ZDK165 | 165 (6-1/2) | 28 (1-7/64) | 690 (2.3) | NC50LH Box * NC50 Pin |
| ZDK168 | 168 (6-5/8) | 28 (1-7/64) | 690 (2.3) | NC50LH Box * NC50 Pin |
| ZDK178 | 178 (7) | 32 (1-1/4) | 700 (2.3) | 5-1/2FH LH Box * 5-1/2FH Pin |
| ZDK203 | 203 (8) | 35 (1-3/8) | 723 (2.4) | 6-5/8REGLH Box * 6-5/8REG Pin |
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Company
XIAN ATO INTERNATIONAL CO.,LTD
Location
Building 15+, No. 2, Biyuan 3rd Road, High-tech Zone, Xi 'an Post code：710117
Contact Person
Rita Zheng