JPT

 

Vol. 58 No. 7

July 2006

Well Stimulation

Delayed-Release Acid System for Cleanup of Al Khalij Horizontal Openhole Completions

The full-length paper describes a new approach that uses a slow-acting stimulation treatment for damage removal and stimulation. The stimulation treatment comprises a starch enzyme to degrade the most troublesome polymer and an organic compound that reacts with the carrier brine to release organic acid in situ over a period of several hours. The system has been used recently in the Al Khalij field in Qatar with openhole lengths ranging from 162 to 576 ft and treatment volumes ranging from 125 to 725 bbl.

Synopsis of SPE 98164

This article, written by Assistant Technology Editor Karen Bybee, contains highlights of paper SPE 95826, "Achieving True Sandstone-Reservoir Stimulation in Deepwater Horizontal Wells," by A. Mendez, SPE, BJ Services Co.; L.F. Neumann, SPE, and E. de Almeida Pinto, Petrobras; and R. Torres, SPE, R. Farias, SPE, and M. Acosta, SPE, BJ Services Co., prepared for the 2005 SPE Annual Technical Conference and Exhibition, Dallas, 9-12 October.

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