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All kinds of Crossover sub

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Detailed Description

Product Overview

The Crossover Sub is a mission-critical transition connector in oil drilling operations, designed to resolve connection barriers caused by dimensional mismatches or thread profile differences within drill strings. Serving as a key hub linking upper tools (e.g., drill pipes) and lower tools (e.g., drill collars, bits), it ensures mechanical integrity and fluid sealing under high-pressure/high-torque conditions. Widely deployed in complex environments including onshore ultra-deep wells , offshore platforms, and sour gas wells.

Product Features

API-Standard Connections. Compatible with NC series, REG, FH, and other API thread profiles.
Anti-Misfire Locking. Prevents unintended jarring-induced drill string failures.
Reduced Tripping Frequency. Hydraulic-mechanical synergy handles multiple stuck-pipe scenarios, resolving 90% of incidents in a single run , cutting NPT by 25% .
Optimized Maintenance Costs. Modular design enables rapid seal replacement, slashing repair time by 50% .

Application

1. Onshore Ultra-Deep Wells (>4,500m TVD)

(1) Requirement : High torsion resistance + ≥95% jarring force transmission efficiency.

(2) Configuration : S-135 drill pipe + Type B Crossover Sub (NC50 → 7⅝" REG), adapting to directional wells with >60° inclination to prevent casing abrasion.