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California Registered Geophysicist No. 170 California Registered Geologist No. 6043 Kentucky Registered Professional Geologist No. 1624 Texas Licensed Professional Geophysicist No. 6289 |
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The Tool Pusher is Your Friend
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Sometimes, in the rush to "get the well down and protect it with casing", the object of drilling it in the first place - to evaluate a reservoir - is overlooked. |
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Decisions about mud type, mud chemistry and drilling rates can effect the condition of the borehole and, subsequently, the quality of the wireline and/or MWD petrophysical measurements. |
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Using dispersive muds (e.g., lignosulfonate) to drill expansive clay shales risks stuck logging tools, severe borehole wash-outs, and caving. |
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Attempting to keep a borehole open by "weighting up the mud" may be counter productive, as the increased borehole fluid pressure will drive the mud chemicals into any cracks in the borehole wall. |
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"Making hole too fast" runs the risk of building insufficient mud cake to keep the borehole open for wireline operations and running casing. |
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I will work with your Drilling Department and drilling contractors to provide the best possible environment for Wireline and/or MWD petrophysical measurements. |
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Send Me an E-Mail |
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If your Internet browser is not configured to send e-mail, send your e-mail directly to my e-mail address: dgwhill@aol.com |
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Contact: Donald G. Hill at: Home Phone: +(925) 947-1541, FAX: +(309) 437-5748, Cell/Business Phone: +(925) 437-5748 E-Mail: dgwhill@aol.com |
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