Subsea Intervention

Topics: Coiled tubing, Well intervention, Oil well Pages: 2 (359 words) Published: August 28, 2010
Schlumberger Rigless Subsea Well Intervention
Rigless subsea well intervention is the technology and methodology of reentering a subsea well to perform through-tubing work without a MODU, enabling coiled tubing, slickline, or wireline operations. Schlumberger is introducing two complementary rigless subsea intervention methodologies. These methodologies, Open Water Wireline (OWWL) and the Spoolable Compliant Guide (SCG), use common well control equipment accessible from a single vessel to create a step change reduction in the cost of a subsea well intervention.

Customers can now have rigless well services access to their subsea wells in water depths to 3,000 m. The addition of coiled tubing services and extension of water depth capability to 3,000 m offer added value at costs that are essentially the same as those for OWWL services deployed in shallow water depths today. Open water wireline

Open Water Wireline (OWWL) enables slickline and electric-line operations services to be performed in subsea wells. To date this intervention technology has not been deployed in water depths greater than 500 m, much less the 3,000 m water depth our system is designed to operate in. The traditional grease injection-type dynamic seal containing well pressure around the braided electric line is replaced by our streamline cable and a stuffing box-type dynamic seal system. This combination simplifies the subsea well intervention package control system and hydraulics necessary to maintain separation of the wellbore fluids from the environment. Spoolable Compliant Guide

The Spoolable Compliant Guide (SCG) enables slickline, electric line, and coiled tubing intervention services to be performed in subsea wells. Schlumberger can enable this service to water depths to 3,000 m.

The patented SCG employs a flexible guide that connects a vessel to a subsea well control package. A wellbore seal protects the SCG from wellbore fluids and pressure. The guide provides motion...
Continue Reading

Please join StudyMode to read the full document

You May Also Find These Documents Helpful

  • Managerial Interventions in Third Party Conflicts Essay
  • Linking Organizational Diagnosis to Intervention Essay
  • Intervention studies on forgiveness Essay
  • To what extent is humanitarian intervention an abandoned project Essay
  • A Future Trend in Crisis Intervention Mental Health and Crisis Intervention Bshs471 Essay
  • Response to Intervention Essay
  • Essay about Government Intervention in National Markets
  • Intervention in Syria Essay

Become a StudyMode Member

Sign Up - It's Free