Preventing Lost Circulation in Severely Depleted Unconsolidated Sandstone Reservoirs

Author:

Ali Aziz1,Kalloo C. L.2,Singh U. B.1

Affiliation:

1. Amoco Trinidad Oil Co.

2. Tucker Group of Companies

Abstract

Summary This paper discusses the field application of a blend of lost-circulation materials (LCM's), in a water-based drilling fluid to drill through multiple severely depleted, unconsolidated sandstone reservoirs. Simple laboratory tests are documented to show the sealing effectiveness of the LCM blend. Major benefits of the LCM blend include lost-circulation prevention, elimination of intermediate-drilling-casing strings, and substantially lower well costs.

Publisher

Society of Petroleum Engineers (SPE)

Subject

Mechanical Engineering,Energy Engineering and Power Technology

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