MLchartDataset catalogue

Combination string

Term · Oil and gas · MLC-T-OAG-000758

A casing, tubing, or drill string assembled from sections of pipe with different weights, grades of steel, or connection types. The design places higher-strength, heavier-walled pipe in sections of the well where stresses like tension or collapse pressure are highest, and lower-cost pipe where they are not. This design approach reduces the overall weight and total cost of the string compared to using a single high-grade specification for its entire length.

Table 1. Record
IdentifierMLC-T-OAG-000758
FieldOil and gas
SubjectDrilling
Record as JSON 
{
  "id": "MLC-T-OAG-000758",
  "term": "Combination string",
  "field": "Oil and gas",
  "definition": "A casing, tubing, or drill string assembled from sections of pipe with different weights, grades of steel, or connection types. The design places higher-strength, heavier-walled pipe in sections of the well where stresses like tension or collapse pressure are highest, and lower-cost pipe where they are not. This design approach reduces the overall weight and total cost of the string compared to using a single high-grade specification for its entire length.",
  "subject": "Drilling",
  "url": "https://mlchart.com/terminology/oil-and-gas/combination-string/"
}

Record 815 of 4,469 in Oil and gas terminology (MLC-0103). Request the full dataset.