KS-14 Puna Geothermal Venture : flawless execution of aerated mud drilling with mud motor in hostile environment

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2012-11
Authors
Rickard, Bill
Samuel, Abraham
Lee, Chris
Spielman, Paul
Cuadros, Ivan
Long, Justin
Robert, Earl
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African Rift Geothermal Conference
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The PUNA Geothermal Venture (PGV) wells are located on the Big Island of Hawaii near the Kilauea Volcano. This results in a highly fractured, hard, hot formation, challenging PGV with lost circulation, hole-cleaning, cooling and stuck pipe issues. With static formation temperatures of 600°F the traditional fluid system incorporates water-based mud, various cooling systems to maintain operation temperature limits < 300°F, micronized cellulose for lost circulation and mud-pulse measurement while drilling. Although aerated mud is the preferred drilling fluid for operations performed in areas prone to lost circulation, there are certainly drawbacks and considerations to running aerated fluids. PGV along with its contractors managed to complete the 26” hole section flawlessly on aerated mud, which has not been part of the standard program.
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KS-14, mud drilling, drilling, Puna Geothermal Venture, Kilauea, Puna, Big Island, Hawaii
Citation
Rickard B, Samuel A, Lee C, Spielman P, Cuadros I, Long J, Robert E. 2012. KS-14 Puna Geothermal Venture : flawless execution of aerated mud drilling with mud motor in hostile environment. Nairobi (Kenya): African Rift Geothermal Conference.
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5 pages
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