MLchartDataset catalogue

Differential SP

Term · Oil and gas · MLC-T-OAG-001072

A spontaneous potential measurement taken between two electrodes placed close together in the borehole, rather than between a downhole electrode and a surface reference. Because it records the potential difference over a short interval, it responds to the gradient of the SP curve, which sharpens bed boundaries and suppresses noise common to both electrodes, such as telluric and surface-electrode effects. Like conventional SP, it needs an open hole filled with conductive water-based mud.

Table 1. Record
IdentifierMLC-T-OAG-001072
FieldOil and gas
SubjectFormation Evaluation
Record as JSON 
{
  "id": "MLC-T-OAG-001072",
  "term": "Differential SP",
  "field": "Oil and gas",
  "definition": "A spontaneous potential measurement taken between two electrodes placed close together in the borehole, rather than between a downhole electrode and a surface reference. Because it records the potential difference over a short interval, it responds to the gradient of the SP curve, which sharpens bed boundaries and suppresses noise common to both electrodes, such as telluric and surface-electrode effects. Like conventional SP, it needs an open hole filled with conductive water-based mud.",
  "subject": "Formation Evaluation",
  "url": "https://mlchart.com/terminology/oil-and-gas/differential-sp/"
}

Record 1,146 of 4,469 in Oil and gas terminology (MLC-0103). Request the full dataset.