MLchartDataset catalogue

Depth-derived

Term · Oil and gas · MLC-T-OAG-001023

Describing a borehole-compensated sonic measurement in which a transit-time reading is stored and averaged with a second reading taken after the tool has moved a fixed distance up the hole, so errors from changes in hole size cancel. The compensation comes from the tool's depth movement, which is how the long-spaced sonic tool, with 10 to 12 feet between transmitters and receivers, achieves it without an unwieldy length. The mode is abbreviated DDBHC.

Table 1. Record
IdentifierMLC-T-OAG-001023
FieldOil and gas
SubjectFormation Evaluation
Record as JSON 
{
  "id": "MLC-T-OAG-001023",
  "term": "Depth-derived",
  "field": "Oil and gas",
  "definition": "Describing a borehole-compensated sonic measurement in which a transit-time reading is stored and averaged with a second reading taken after the tool has moved a fixed distance up the hole, so errors from changes in hole size cancel. The compensation comes from the tool's depth movement, which is how the long-spaced sonic tool, with 10 to 12 feet between transmitters and receivers, achieves it without an unwieldy length. The mode is abbreviated DDBHC.",
  "subject": "Formation Evaluation",
  "url": "https://mlchart.com/terminology/oil-and-gas/depth-derived/"
}

Record 1,095 of 4,469 in Oil and gas terminology (MLC-0103). Request the full dataset.