Method of controlling lost circulation in well drilling

Boring or penetrating the earth – Processes – Boring with specific fluid

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Details

166294, 252 8512, C09K 700, C09K 702, E21B 33138

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active

049571745

ABSTRACT:
Loss of drilling fluid into a subterranean formation penetrated in the drilling of a well is controlled by addition to the drilling fluid of a lost circulation material comprising petroleum coke.

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Modern Petroleum Technology, "Cracking and Reforming" Knight, W. N. N. et al., John Wiley & Sons, 4th Edition 1973, pp. 283-288, copy in 3-4E06.
Oil Well Cementing Practice in the United States, A.P.I. New York, 1959, p.76, copy in 175-72.

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