Pubblicazione scientifica

Ultradeepwater Riserless Subsea Slickline Intervention From Vessel of Opportunity: Brazilian Case Study

FILONE TECNOLOGICO	TEMA
produzione e cattura

RIASSUNTO

Abstract
As the number of subsea wells in deepwater environments increases, companies who operate in these regions continue to seek safer and more viable economic solutions for improving value realization through well intervention. Traditionally, subsea well interventions are conducted from heavy-weight, mobile offshore drilling units (MODUs) with riser packages. Unfortunately, these intervention operations involve significant operating day rates with consequent NPV negative results.

This paper discusses a riserless intervention that was performed from a dynamically positioned multi-support vessel (MSV) that involved setting and recovery of a mechanical flow-control device in a well with a water depth of approximately 1900 m in the South Atlantic Ocean. The technologies and methods used in this intervention proved that these difficult subsea operations can be performed in a much more flexible and financially viable fashion than previously possible with conventional methods. The techniques developed for this operation also mitigated safety concerns for personnel and equipment, while executing the potential high-risk riserless intervention with success.

The paper will cover the record-breaking, light-weight intervention and the technologies used on this campaign that eliminated the need for a traditional MODU. Of particular interest is the unique vessel interface that allowed the operation to be performed safely and efficiently with slickline.

This successful intervention opens new opportunities for safer and more economical interventions in the deep and ultra deepwater arenas.

DATA

Data di pubblicazione: 04/04/2013

AUTORI

GORDON SCOTT
LARIMORE DAVID RUSS
CERVO GUSTAVO
BOECHAT NIVEA
KLEIN MARK
BUCHAN MARTIN
MORRIS COLIN JAMES INNES
DAVIS SCOTT

ENTE DI AFFERENZA

HALLIBURTON CO
HALLIBURTON ENERGY SRVC INC
SHELL
SHELL INTL EXPLORATION & PROD INC

RIVISTA

SPE/ICoTA Coiled Tubing & Well Intervention Conference and Exhibition, 27-28 March, The Woodlands, Texas, USA

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