An alternative characterization of bit-sticking phenomena in a multi-degree-of-freedom controlled drillstring (Q1021973)
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scientific article; zbMATH DE number 5563232
| Language | Label | Description | Also known as |
|---|---|---|---|
| English | An alternative characterization of bit-sticking phenomena in a multi-degree-of-freedom controlled drillstring |
scientific article; zbMATH DE number 5563232 |
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An alternative characterization of bit-sticking phenomena in a multi-degree-of-freedom controlled drillstring (English)
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9 June 2009
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The author analyses oscillation, sliding motion, friction and similar discontinuous phenomena arising in oilwell drillstring. After describing the systems model (section 2), the author analyses open-loop system properties (section 3), and later on (section 4) designs a linear proportional-integral controller eliminating nondesired behavior.
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systems control
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discontinuous phenomena
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