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DEMO2000-Prosj.ret tekn.utv. petro.virk

Kvalifisering av B-annulus monitoreringsystem for subsea brønner

Alternative title: Qualification of B-annulus monitoring system for subsea wells

Awarded: NOK 7.0 mill.

In all deep water and ultra-deep water regions, authorities struggle to set standards for allowing oil and gas recovery due to possible environmental impact from a major disaster. After the very unfortunate Deepwater Horizon accident, and a multitude of other incidents of mismanaged pressure control the last few years, suggested technology involve improved pressure management. Aside from developing improved procedures around cementing operations, leakage detection and oil spill recovery, a success factor will be the ability to monitor pressure and temperature fluctuations in B anulus. Where the platform and land wells with dry trees have access to the B anulus, and procedures for maintaining a well-balanced pressure window, the subsea wells have until now had no possibility to be monitored. There has been no method of surveying the pressure outside the first casing, hence missing out on detecting smaller leaks which can lead to the ultimate horrors of a blow-out up around the well barriers. Techni has developed a system,called BAMSE - a gauge to measure pressure and temperature in the B-Annulus in a subsea well without any use of active electronics and with online continuous transfer of the measurement results.The system has a high degree of novelty and innovation because it enables monitoring of the outer closed off annular volumes without penetrating the pressure barriers - over the well lifetime - avoiding the use of electronics down-hole. The main target for the project is to qualify BAMSE for continuously monitoring of subsea wells trough pilot testing in an offshore well. Statoil is partner in the project.

Funding scheme:

DEMO2000-Prosj.ret tekn.utv. petro.virk