Foamed cement job successful in deep HTHP offshore well

Journal Article · Mon Mar 11 04:00:00 EST 1996 · Oil and Gas Journal

OSTI ID:205516

Benge, O G ^[1]; McDermott, J R ^[2]; Langlinais, J C ^[3]; Griffith, J E ^[4]

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1. Mobil E and P Technical Center, Dallas, TX (United States)
2. Mobil E and P U.S., New Orleans, LA (United States)
3. Halliburton Energy Services, Houma, LA (United States)
4. Halliburton Energy Services, Duncan, OK (United States)

A foamed cement slurry successfully isolated problem formations behind a liner in a high-temperature/high-pressure (HTHP) well in Mobile Bay. The foamed cement slurry, with an average density of 11.8 ppg, was used to cement about 10,000 ft of a 9 5/8 inch. liner. Foamed cement has classically been considered when light-weight slurries are required. In this application, the use of foamed cement was not for its light-weight properties but rather for its unique performance in high-stress environments. Both offshore and zero-discharge requirements had to be met, and special considerations for each were addressed in this operation. Previous research has shown benefits of compressible slurries in preventing flow after cementing. The study was geared toward gas flow rather than fluid flow, but additional work indicates that foamed cement can be effective in preventing both gas and fluid migration. Based in part on this work and the study on temperature-induced stress failure of cement, a foamed slurry appeared to be an appropriate choice. In an attempt to address these problems, a 15.0-ppg Class H cement system foamed with nitrogen was used on this liner job. Because of the high temperatures in this well, the slurry was stabilized with 35% silica fluor. Other additives for retardation, foaming agent, and foam stabilizers were added as liquids. This paper reviews the performance and handling procedures of this cementing operation.

• OSTI ID: 205516
• Journal Information: Oil and Gas Journal, Journal Name: Oil and Gas Journal Journal Issue: 11 Vol. 94; ISSN OIGJAV; ISSN 0030-1388
• Country of Publication: United States
• Language: English

Related Subjects

03 NATURAL GAS
ALABAMA
CEMENTING
CEMENTS
GULF OF MEXICO
MATERIALS HANDLING
NATURAL GAS WELLS
PERFORMANCE
PORE STRUCTURE
WELL COMPLETION