Perforating gun tube and perforating gun
AssigneeBenteler Steel/Tube GmbH
InventorsWaldemar Engel, Leonhard Rose, Christopher Halfpap
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Abstract
The present invention relates to a perforating gun tube, characterized in that the tube is made of a steel alloy comprising, in addition to iron, the following alloying elements, expressed in mass percent: C 0.12-0.22% Si 0.3-1.0% Mn 1.0-4% Cr 0.5-2% Mo 0.1-1%, V 0.05-0.2% Ti 0.02-0.1% and B 0.001-0.01% and impurities due to melting, and that the tube has a yield strength, RP0,2, in the range of 750 to 1100 MPa. In addition, a perforating gun having such a perforating gun tube is described.
Claims18
A perforating gun tube, characterized in that the tube is made of a steel alloy comprising, in addition to iron, the following alloying elements, expressed in percent by mass:
- C 0.12-0.22%
- Si 0.3-1.0%
- Mn 1.0-4%
- Cr 0.5-2%
- Mo 0.1-1%,
- V 0.05-0.2%
- Ti 0.02-0.1% and
- B 0.001-0.01%
- and impurities due to smelting, and
- wherein the tube has a yield strength, Rp0.2, in the range from 750 to 1100 MPa;
- and
- wherein the tube has an air-hardened bainitic microstructure comprising at least 70 area percent bainite.
A perforating gun comprising a perforating gun tube, characterized in that the tube is made of a steel alloy comprising, in addition to iron, the following alloying elements, expressed in percent by mass:
- C 0.12-0.22%
- Si 0.3-1.0%
- Mn 1.0-4%
- Cr 0.5-2%
- Mo 0.1-1%,
- V 0.05-0.2%
- Ti 0.02-0.1% and
- B 0.001-0.01%
- and impurities due to smelting, and
- wherein the tube has a yield strength, Rp0.2, in the range from 750 to 1100 MPa;
- and
- wherein the tube has an air-hardened bainitic microstructure comprising at least 70 area percent bainite.
Dependencies are inferred from the claim text.