History Matching and Forecasting

Régis Kruel Romeu, SPE, Senior Consultant, Petrobras Research Center (CENPES)

Many reservoir engineers dislike the very idea of automatic history match- ing applied to real full-field studies. They believe there is no artificial substitute for experienced reasoning, deep understanding of the reservoir mechanisms, and atten- tion to real-life practical aspects of the problem. Some use terms such as art and intu- ition. For them, even if computers long ago learned to play chess, computers will never be able to perform real-case history matching on their own or at least they are still too far from this achievement. Very often, during technical sessions, immediately fol- lowing an advanced mathematical presentation on history matching, someone in the audience makes his or her point about the limits of automatic approaches. To avoid disputes, experienced speakers prefer less pretentious expressions such as assisted or semiautomatic history matching.

 

High-Pressure/High-Temperature Challenges

Mike Payne, SPE, Senior Advisor, BP

Exciting operations are ongoing on the shallow-water US offshore continen- tal shelf (OCS) that will influence the entire high-pressure/high-temperature (HP/HT) community going forward. McMoran and their operating partners are actively drill- ing, evaluating, testing, and bringing to production several deep HP/HT plays. These prospects are named in the Treasure Island theme with identities such as Davy Jones, Blackbeard, and Lafitte. The Davy Jones 1 is in the completion phase, incorporating multiple Eocene Wilcox sands, and it represents the first 25,000-psi completion of its kind in the world. The Davy Jones 2 encountered confirmed pay and is progressing well. The original Blackbeard well was taken to 32,997-ft total depth, and operations on Blackbeard East have been permitted to 34,000 ft. As with Davy Jones, these wells represent substantial extensions to or step changes in current HP/HT technologies.

 

Natural Gas Processing and Handling

George Hobbs, SPE, Director, Strategic Chemistry Pty. Ltd.

In 2010, natural-gas reserves were approximately equivalent to 75% of the oil reserves (including oil sands). Unconventional gas sources continue to make up an increasingly important part of the natural-gas supply, particularly shale gas and coal- bed methane (CBM), which contribute approximately 40% to US natural-gas reserves.

 

Offshore Drilling and Completion

Helio Santos, SPE, President, Safekick Limited

In the 2 years since the Macondo incident, we have seen a lot of action toward new regulations, procedures, and norms to be implemented in an attempt to reduce the risks of those tragic events happening again. But the industry did not stop working; wells were drilled and completed, even in the Gulf of Mexico after the long period of inactivity. As expected, we saw a big focus on subsea-equipment testing and procedures and on needed equipment improvements. But we also saw many reports highlighting improved operational performance, confirming that the industry continues with significant activity.

 

New Technical Section and TIG: Petroleum Data Driven Analytics (PD2A)

Using data as the main building block of models is the new paradigm in science and technology. A new Technical Section and Technical Interest Group (TIG) has been formed to foster the application of data-driven modeling, data mining and predictive analytics research, development and practices in upstream oil and gas.

 

April Oil and Gas Facilities now available

The April issue of Oil and Gas Facilities features in-depth articles about decommissioning activities in the Gulf of Mexico and how a systems-wide engineering approach to facilities design helps in the planning for initial startup.

 
© 2011 Society of Petroleum Engineers