New system provides continuous quantitative analysis of gas concentration in the mud during drilling

G. L. Roberts, V. C. Kelessidis, J. M. Williams

Research output: Contribution to journalArticle

Abstract

Continuous monitoring of hydrocarbon gases in drilling fluids at the surface is essential for identification of prospective reservoir zones as well as for safety. This paper describes a new gas-analysis system that determines the total amount of gas in the mud below the bell nipple. The system is continuous, consistent, and fully quantitative (unlike a gas trap) but not labor-intensive (like a steam still). It also recovers and analyzes gas liberated into the air at the bell nipple, which test results have shown to be almost 50% of the total gas in the mud below the bell nipple.

Original languageEnglish
Pages (from-to)219-224
Number of pages6
JournalSPE drilling engineering
Volume6
Issue number3
DOIs
Publication statusPublished - 1 Jan 1991

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ASJC Scopus subject areas

  • Engineering(all)

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