发明名称 |
DATA RECOVERY FOR PULSE TELEMETRY USING PULSE POSITION MODULATION |
摘要 |
The specification discloses algorithms for error recovery in pulse position modulation-based mud pulse telemetry. More particularly, the specification discloses detection and attempted correction of at least five possible error mechanisms: the missed detection of a pulse that creates an interval greater than maximum; the missed detection of a pulse that results in an interval still within acceptable boundaries; detection of an extra pulse; a pulse shift that results in data in contiguous intervals being affected; and a pulse shift resulting in a single interval data corruption. |
申请公布号 |
AU2003290912(A1) |
申请公布日期 |
2004.06.23 |
申请号 |
AU20030290912 |
申请日期 |
2003.11.13 |
申请人 |
HALLIBURTON ENERGY SERVICES, INC. |
发明人 |
LEONARDO VIANA;LABAN, M. MARSH;CILI SUN;BIPIN, K. PILLAI |
分类号 |
E21B47/18 |
主分类号 |
E21B47/18 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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