Downhole hydraulic-line wet-mate connector | SLB

Downhole hydraulic-line wet-mate connector

Enhancing completion flexibility with reliable hydraulic connectivity

Applications

  • Multitrip installations for intelligent completions in complex wells
  • Hydraulic intelligent lower completions requiring workover flexibility
  • Wells with anticipated upper completion workovers, such as electric submersible pump (ESP) changeovers

Benefits

  • Seamless workover operations: Facilitates disconnecting upper and lower completions to reduce workover cost and complexity
  • Long-term reliability: Maintains hydraulic connectivity between upper and lower completions over the life of the well
  • Simplified installation: Requires no downhole rotational alignment, which is ideal for multitrip installations in deviated and horizontal wells and reduces overall rig time

Features

  • Concentric design eliminates the need for orientation during installation
  • Pressure sleeve on stinger enables maintaining pressure in control lines before initial stab-in
  • Protective sleeve in receptacle isolates control line fluid during workovers
  • Independently testable seals ensure hydraulic integrity
  • Integrated filter sub minimizes debris ingress into hydraulic control lines
  • Compatibility with contraction joints and multiple control lines enables flexible completions
  • Optional hydraulic control line release enables single-trip deployment

How it improves performance

With more than 600 installations worldwide, our downhole hydraulic-line wet-mate (HLWM) connector has an established track record. By enabling efficient ESP replacements with no need to pull out the lower completion, the connector has delivered significant savings in cost and rig time for operators globally.

How it works

The HLWM connector is designed for simple and efficient deployment. The receptacle is installed above the lower production packer and deployed to the designated depth using the appropriate running tool. Once at depth, the packer is set by applying pressure to the tubing, ensuring a secure foundation. The running tool is then detached by applying pressure to the casing annulus or by rotating the tool to the right. With the receptacle in place, the upper completion can be installed at a later stage, providing operational flexibility.

The stinger assembly, positioned at the base of the upper completion string, automatically latches into the receptacle on deployment—eliminating the need for precise downhole orientation and streamlining the installation process.

Effortless retrieval for workovers
The upper completion can be retrieved with a straight upward pull. As a contingency measure, the stinger can also be disconnected by rotating it to the right. On disconnection, a protective sleeve in the receptacle automatically covers the hydraulic ports, safeguarding system integrity and preventing fluid contamination.

An optional configuration is available for single-trip deployments, which uses a hydraulic control line release to initiate workover operations.

The HLWM's robust and efficient design minimizes intervention time while maintaining hydraulic integrity, ensuring cost-effective and reliable operations in intelligent and multitrip completions.

What it replaces

Legacy completion systems requiring complex workover techniques that often result in a sidetrack or necessitate complete intelligent hardware retrieval.

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