1. Multi-activation Bypass valve has Versatile Activation Options - Pressure-activated: Responds to specific pressure cycles - Mechanical activation: Tool-string manipulation - Hydraulic activation: Ball or dart activation system - Ensures reliable operation regardless of well conditions 2. Multi-activation Bypass valve has Superior Flow Management - Large bypass ports maximize fluid circulation rates - Prevents balling up or stuck pipe situations - Maintains optimal equivalent circulating density (ECD) 3.Multi-activation Bypass valve has Robust Construction - High-grade alloy steel body with erosion-resistant coatings - Redundant sealing systems for positive pressure containment - Durable components rated for extended service life

Application Scenarios of Combined Salvage Spear in the Oil Industry - Downhole Tool Recovery: Used when downhole tools (e.g., fishing jars, centralizers, packers) or pipe strings become stuck, lost, or separated in the wellbore during drilling, completion, or workover operations. - Junk Removal: Retrieves small debris, loose parts, or broken components (e.g., valve pieces, tool fragments) that hinder well operations or tool passage. - Casing/Tubing Fishing: Engages with the internal or external profile of stuck casing, tubing, or drill pipe sections for recovery in complex wellbore conditions (e.g., deviated, high-angle wells).

1. Reverse Circulation Junk Basket as a key of fishing tool ,Reverse Circulation Core Mechanism: Activates via a dropped steel ball seating in a valve, forcing fluid outward/downward through inner passages, then upward through return holes, carrying junk into the barrel. 2. Reverse Circulation Junk Basket ,wet String Elimination: Proprietary reverse drainage design prevents fluid from occupying the string above the tool during retrieval, ensuring dry pulls.

Junk Sub (Fishing Cup) is normally used to catch and remove junks that are too heavy to be circulated preventing them from settling at the bottom of the well-bore. Typical junks are shivers and fallen objects such as carbide tooth, drill bit and bearings which are too heavy to be removed from the well- hole through conventional fluid circulation. Junk Sub’s main function is to keep well bottom clean to increase bit service life, reduce and prevent drill bit from unexpected damage.

The Eccentric Casing Roller is collapse Correction Specialist The Eccentric Casing Roller forged alloy rollers with tungsten carbide inserts withstand extreme downhole abrasion. The Eccentric Casing Roller unique off-axis design generates radial force to smooth irregularities while minimizing debris. The Eccentric Casing Roller clears cement, scale, and deformations blocking oil work over tools access.

Fixed Diameter Hole Openers are designed for use in soft clays and shales to medium-hard shales and limestones. It is particularly effective in sticky formations where balling problems are encountered. Three jets with replaceable nozzles continuously clean the tool’s cutting structure, clearing debris buildup and increasing penetration.