http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-110886606-B
Outgoing Links
| Predicate | Object |
|---|---|
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/E21B47-022 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/E21B47-022 |
| filingDate | 2019-11-20-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 2021-09-14-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 2021-09-14-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | CN-110886606-B |
| titleOfInvention | Characteristic quantity-while-drilling assisted inertial inclinometry method and device |
| abstract | The invention relates to an inertial inclinometry method and device assisted by characteristic quantity while drilling, which belong to the field of directional drilling and solve the problem of measurement precision while drilling; the method comprises the steps of measuring the drilling position, the drilling speed and the well hole posture information of the operation of the downhole probe according to the inertial data measured while drilling; acquiring speed reference information through drill rod drilling speed information and quasi-zero speed information which are measured externally, and acquiring well posture reference information through triaxial geomagnetic data; taking the difference between the drilling speed and the speed reference information as a speed observed quantity, taking the difference between the well hole attitude information and the well hole attitude reference information as an attitude observed quantity, inputting the difference into a Kalman filter for data fusion and optimal estimation, and outputting an attitude error to correct an attitude matrix in real time; and calculating the attitude information of the well track in real time according to the corrected attitude matrix. The invention effectively solves the problem of inclination measurement error and improves the precision of the system. |
| priorityDate | 2019-11-20-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
| Predicate | Subject |
|---|---|
| isDiscussedBy | http://rdf.ncbi.nlm.nih.gov/pubchem/substance/SID422707724 http://rdf.ncbi.nlm.nih.gov/pubchem/compound/CID25078152 http://rdf.ncbi.nlm.nih.gov/pubchem/protein/ACCP27058 |
Total number of triples: 13.