. Deep borehole surveys and problems. Boring. Plan View of oinOil Well ComparingResulis of Several Surve\/s Derrick^-^ Floor I. depth Fig. 24.—Plan of an oil well comparing Fig. 25. results of several surveys made under varied conditions. {After Macready.) could be compared graphically as in Fig. 24 (after R. P. McLaughhn) ^ Faihng this a check survey should be made in and out of the borehole as in Fig. 25.^ The manner of compiling a check will be seen from Table VIII, wherein 1 By the courtesy of Bull. Amer. Assoc. Petroleum Geol. (Vol. 14, No. 5, p. 586, 1930). 2 Ibid., p. Please note

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. Deep borehole surveys and problems. Boring. Plan View of oinOil Well ComparingResulis of Several Surve\/s Derrick^-^ Floor I. depth Fig. 24.—Plan of an oil well comparing Fig. 25. results of several surveys made under varied conditions. {After Macready.) could be compared graphically as in Fig. 24 (after R. P. McLaughhn) ^ Faihng this a check survey should be made in and out of the borehole as in Fig. 25.^ The manner of compiling a check will be seen from Table VIII, wherein 1 By the courtesy of Bull. Amer. Assoc. Petroleum Geol. (Vol. 14, No. 5, p. 586, 1930). 2 Ibid., p. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Haddock, M. H. (Marshall Henry). New York, McGraw-Hill

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