expro excellence well intervention… · • taqa required support for a subsea well intervention...

Objectives • Taqa required support for a subsea well intervention campaign in the Dutch sector of the Southern North Sea to: – establish if sustainable production from the well could be reinstated and if not, prepare the well for a future abandonment programme – conduct a variety of interventions ranging from wireline fishing, to water shut off, re-perforating, and well testing • In line with Taqa’s existing contracting framework, Expro were appointed lead contractor to both modify the vessel ready for subsea well intervention and manage a well services alliance comprising Expro, BJ Services and BakerHughes • Taqa identified that a self-propelled lift boat could be modified to perform shallow water subsea well intervention, however the vessel selected for this campaign was not equipped with a moon pool, and required a cantilever for this operation Expro Excellence • Key to achieving well re-entry was the fabrication of a cantilever deck that could be skidded over the top of the subsea well to form the work platform for intervention equipment • A cantilever deck was designed and manufactured by Expro – a primary feature was its ability to index through nine positions to centre itself over the well • Over a 14 day period, project-specific rig vessel modifications were undertaken to pre-install well service equipment, comprising surface well testing, coil tubing, e-line and slickline packages, this also included the installation of flare booms on the port and starboard sides of the vessel • Once on location a riser was installed and the well intervention began with well inspections using Expro’s slickline services to establish if the wells were clean of debris from surface to the reservoir – the slickline was used to recover the fish and mechanical plugs previously installed in the well • Wireline was used extensively throughout the project using Expro’s combined e-line and slickline units to minimise number of coiled tubing operations • The first well required milling to clear blockages in the tubing and a cement plug to be set on top of a mechanical bridge plug – The programme also called for production logging and then additional perforating – In order to clear a restriction in the well, the tail pipe was cut off using an Expro radial cutting torch Value to client • Improvement in productivity following the successful intervention of three wells • Significant savings – avoided the need for a jack-up rig or intervention vessel • Single project manager on multi interface project – high operational efficiency • Fast track delivery using vessel of opportunity with custom modifications Contact For further information, please contact: Kevin Illingworth Global Well Abandonment Manager Well Intervention [email protected] www.exprogroup.com/wellintervention Well Intervention / Expro Excellence Lift boat equipped with cantilever deck facilitates cost effective shallow water subsea intervention Well Intervention Expro Excellence exprogroup.com

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Page 1: Expro Excellence Well Intervention… · • Taqa required support for a subsea well intervention campaign in the Dutch sector of the Southern North Sea to: – establish if sustainable

Objectives

• Taqa required support for a subsea wellintervention campaign in the Dutch sectorof the Southern North Sea to:

– establish if sustainable productionfrom the well could be reinstated and if not, prepare the well for a future abandonment programme

– conduct a variety of interventions ranging from wireline fishing, to water shut off, re-perforating, and well testing

• In line with Taqa’s existing contractingframework, Expro were appointed leadcontractor to both modify the vesselready for subsea well intervention andmanage a well services alliancecomprising Expro, BJ Services andBakerHughes

• Taqa identified that a self-propelled liftboat could be modified to performshallow water subsea well intervention,however the vessel selected for thiscampaign was not equipped with a moonpool, and required a cantilever for thisoperation

Expro Excellence

• Key to achieving well re-entry was thefabrication of a cantilever deck that couldbe skidded over the top of the subseawell to form the work platform forintervention equipment

• A cantilever deck was designed andmanufactured by Expro – a primaryfeature was its ability to index throughnine positions to centre itself over the well

• Over a 14 day period, project-specific rigvessel modifications were undertaken topre-install well service equipment,comprising surface well testing, coiltubing, e-line and slickline packages, thisalso included the installation of flarebooms on the port and starboard sidesof the vessel

• Once on location a riser was installed andthe well intervention began with wellinspections using Expro’s slicklineservices to establish if the wells wereclean of debris from surface to thereservoir – the slickline was used torecover the fish and mechanical plugspreviously installed in the well

• Wireline was used extensively throughoutthe project using Expro’s combined e-lineand slickline units to minimise number ofcoiled tubing operations

• The first well required milling to clearblockages in the tubing and a cementplug to be set on top of a mechanicalbridge plug

– The programme also called for production logging and then additional perforating

– In order to clear a restriction in thewell, the tail pipe was cut off using an Expro radial cutting torch

Value to client

• Improvement in productivity following thesuccessful intervention of three wells

• Significant savings – avoided the need fora jack-up rig or intervention vessel

• Single project manager on multi interfaceproject – high operational efficiency

• Fast track delivery using vessel ofopportunity with custom modifications

ContactFor further information, pleasecontact:

Kevin Illingworth Global Well Abandonment ManagerWell Intervention

[email protected]