Nov. 15, 2007


Description

Pore volume compressibility (PVC) is an important rock parameter in weakly-cemented sediments common in the Gulf of Mexico. Appropriately implementing this in reservoir simulations can significantly impact projections of reserves recovery. Drawing on field case history examples, the talk will highlight the need to properly characterize this rock property early in field appraisal.

Preferred ways of measuring PVC are described. Approaches to upscaling measured laboratory measurements to field-scale reservoir simulations will also be discussed. The talk will describe how compressibility varies as a function of both the magnitude of the pressure change, and the time over which this pressure change occurs. This sometimes overlooked property of weakly-cemented sediments is important when attempting to reconcile measures of compressibility derived from different sources - for example, from wireline logging data, from well test analysis, or from earth-tides pressure measurements. The impact of early-time production response, and the differing reservoir stiffness seen during reservoir reflation is also described. The talk will conclude with a discussion on the need for fully-coupled reservoir simulation (where the rock- and reservoir-responses are solved simultaneously), as this is currently a new area of technology development.



Featured Speakers

Speaker Stephen Willson
Discipline Technical Authority BP Stephen Willson is the Discipline Technical Authority for Geomechanics within BP. A civil engineer by training, with a PhD in Soil Mechanics from the University of Manchester, UK, he has over 20 years experience of petroleum-related geomechanics. From 1988-1992 and since 1995, he has worked for …

Discipline Technical Authority
BP

Stephen Willson is the Discipline Technical Authority for Geomechanics within BP. A civil engineer by training, with a PhD in Soil Mechanics from the University of Manchester, UK, he has over 20 years experience of petroleum-related geomechanics. From 1988-1992 and since 1995, he has worked for BP in various research and technology development roles in both Sunbury, UK and in Houston, TX. In 1992-1995 he worked at TerraTek, Inc., Salt Lake City, UT, as Completions Manager. His current work focus in BP's Exploration & Production Technology Group in Houston is in the areas of wellbore stability, salt mechanics, and compaction and subsidence, aimed at addressing the many geomechanical well integrity challenges facing BP's developments in the deepwater Gulf of Mexico and offshore Angola.


Full Description



Organizer

Jack Steen


Date and Time

Thu, Nov. 15, 2007

11:30 a.m. - 1 p.m.
(GMT-0500) US/Central

Event has ended

Location

The Courtyard @ St. James

1885 St. James Place
Houston, TX 77056
USA