![]() ![]() E21B23/00- Apparatus for displacing, setting, locking, releasing, or removing tools, packers or the like in the boreholes or wells.DEEP DRILLING OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.) Filing date Publication date Application filed by 徐秀 filed Critical 徐秀 Priority to CN201610322599.XA priority Critical patent/CN105863539A/en Publication of CN105863539A publication Critical patent/CN105863539A/en Status Pending legal-status Critical Current Links Inventor 徐秀 Original Assignee 徐秀 Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.) Pending Application number CN201610322599.XA Other languages Chinese ( zh) Google Patents Grabber for instrument in well mouth blowout prevention pipeĭownload PDF Info Publication number CN105863539A CN105863539A CN201610322599.XA CN201610322599A CN105863539A CN 105863539 A CN105863539 A CN 105863539A CN 201610322599 A CN201610322599 A CN 201610322599A CN 105863539 A CN105863539 A CN 105863539A Authority CN China Prior art keywords instrument tongue torsion spring grabbing grabber Prior art date Legal status (The legal status is an assumption and is not a legal conclusion. Google Patents CN105863539A - Grabber for instrument in well mouth blowout prevention pipe This relieves the pressure on the dogs, and allows the Fetch to be recovered.CN105863539A - Grabber for instrument in well mouth blowout prevention pipe ![]() If the Fetch will not pull up the pipe, or if it gets stuck, relax the retrieval line and pull up on the release line. ![]() Attempting different points along the side wall will yield better success than dropping it down the center. Helpful tip: Broken pipes are usually located on the side wall of the casing. This may take several attempts at different points along the well casing (see diagram). Pull up on the main rope to recover the object. While holding the retrieval line, or securing it to an external support outside of the well, drop the Fetch down the side of the well casing. The Fetch will not work properly if the lines get tangled. Keep the retrieval line and the release line separated to prevent tangling. ![]() Call for technical support if problems persist.Ĥ. If there is significant resistance, check the tool for any obstructions or sediment that could prevent it from operating properly. Test the Fetch with each use by sliding the release mechanism back and forth. The release line is tied to one of the smaller holes on the release mechanism.ģ. Tie the retrieval line securely to the large hole at the top of the Fetch. Ensure that the tensile strength of the retrieval line meets the requirements needed for recovery A secondary rope or twine of equal length will be needed for the release line.Ģ. Use a length of rope or cable for the retrieval line long enough to reach the bottom of the well. The Fetch can retrieve pipes or tubing with a minimum pipe diameter of 1 inch (25.5mm, and a maximum sidewall thickness of 3/8 inch (15.875mm).ġ. If the object being recovered is lodged in place and cannot be withdrawn, the Fetch has a recovery system that allows it to release the pipe. It grips the broken pipe using pressure from pulling up on the retrieval rope. The Fetch works by “finding” the opening of a broken pipe or pump and locking it into the jaws (dogs). DAPALCO utilizes state-of-the-art design and water jet precision to deliver a simple, yet a sophisticated alternative for retrieving broken pipes and pumps from wells that are otherwise inaccessible. ![]()
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