{"id":15688,"date":"2026-06-16T11:41:03","date_gmt":"2026-06-16T03:41:03","guid":{"rendered":"https:\/\/www.drillpipes.com\/x95-vs-g105-%d8%a3%d9%86%d8%a8%d9%88%d8%a8-%d8%a7%d9%84%d8%ad%d9%81%d8%b1\/"},"modified":"2026-09-18T16:01:06","modified_gmt":"2026-09-18T08:01:06","slug":"x95-vs-g105-%d8%a3%d9%86%d8%a8%d9%88%d8%a8-%d8%a7%d9%84%d8%ad%d9%81%d8%b1","status":"publish","type":"post","link":"https:\/\/www.drillpipes.com\/ar\/x95-vs-g105-%d8%a3%d9%86%d8%a8%d9%88%d8%a8-%d8%a7%d9%84%d8%ad%d9%81%d8%b1\/","title":{"rendered":"X95 vs G105 \u0623\u0646\u0628\u0648\u0628 \u0627\u0644\u062d\u0641\u0631"},"content":{"rendered":"\n

X95 and G105 are API 5DP \u0623\u0646\u0628\u0648\u0628 \u0627\u0644\u062d\u0641\u0631 body \u0627\u0644\u062f\u0631\u062c\u0629s with minimum \u0645\u0642\u0627\u0648\u0645\u0629 \u0627\u0644\u062e\u0636\u0648\u0639s of 95,000 psi and 105,000 psi respectively. X95 and G105 are API 5DP \u0623\u0646\u0628\u0648\u0628 \u0627\u0644\u062d\u0641\u0631 \u0627\u0644\u062f\u0631\u062c\u0629s defined by minimum \u0645\u0642\u0627\u0648\u0645\u0629 \u0627\u0644\u062e\u0636\u0648\u0639: 95,000 psi (655 MPa) for X95 and 105,000 psi (724 MPa) for G105. With the same \u0627\u0644\u0642\u0637\u0631 \u0627\u0644\u062e\u0627\u0631\u062c\u064a and \u0633\u0645\u0627\u0643\u0629 \u0627\u0644\u062c\u062f\u0627\u0631, G105 provides approximately 10.5% more minimum \u0627\u0644\u0623\u0646\u0627\u0628\u064a\u0628-body yield capacity<\/strong>, giving additional margin where X95 is insufficient under combined tension, \u0639\u0632\u0645 \u0627\u0644\u062f\u0648\u0631\u0627\u0646 and overpull.<\/p>\n\n

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\u0627\u0644\u062f\u0631\u062c\u0629 selection must be based on the complete \u0623\u0646\u0628\u0648\u0628 \u0627\u0644\u062d\u0641\u0631 assembly<\/strong>, not \u0627\u0644\u0623\u0646\u0627\u0628\u064a\u0628-body strength alone. Tool-\u0627\u0644\u0648\u0635\u0644\u0629 capacity, \u0627\u0644\u0648\u0635\u0644\u0629 \u0639\u0632\u0645 \u0627\u0644\u062f\u0648\u0631\u0627\u0646, remaining \u0633\u0645\u0627\u0643\u0629 \u0627\u0644\u062c\u062f\u0627\u0631, \u0627\u0644\u062a\u0639\u0628 exposure, \u0627\u0644\u0628\u0626\u0631 trajectory, H\u2082S conditions and inspection history can become the governing limits. X95 remains suitable when the calculated load margin is adequate; G105 is justified only when additional body strength is required and the \u0627\u0644\u0648\u0635\u0644\u0629 and inspected condition can support it.<\/strong> \u0627\u0644\u0628\u0626\u0631 depth or \u0627\u0644\u062d\u0641\u0631 \u0627\u0644\u0627\u062a\u062c\u0627\u0647\u064a alone is not a sufficient reason to up\u0627\u0644\u062f\u0631\u062c\u0629 the \u0627\u0644\u062f\u0631\u062c\u0629.<\/p>\n\n

API 5DP X95 vs G105 Mechanical Properties<\/strong><\/strong><\/h2>\n\n

The \u0627\u0644\u062f\u0631\u062c\u0629 number represents the specified minimum \u0645\u0642\u0627\u0648\u0645\u0629 \u0627\u0644\u062e\u0636\u0648\u0639 in thousands of psi. <\/p>\n\n

X95 starts at 95 ksi and G105 at 105 ksi. Both belong to the higher-strength group of steel \u0623\u0646\u0628\u0648\u0628 \u0627\u0644\u062d\u0641\u0631 \u0627\u0644\u062f\u0631\u062c\u0629s, but G105 has a higher controlled yield and tensile-strength window.<\/p>\n\n

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Mechanical Property<\/strong><\/strong><\/td>X95 Drill Pipe<\/strong><\/strong><\/td>G105 Drill Pipe<\/strong><\/strong><\/td>Difference<\/strong><\/strong><\/td><\/tr>
Minimum \u0645\u0642\u0627\u0648\u0645\u0629 \u0627\u0644\u062e\u0636\u0648\u0639<\/td>95,000 psi \/ 655 MPa<\/strong><\/td>105,000 psi \/ 724 MPa<\/strong><\/td>+10,000 psi \/ +69 MPa<\/td><\/tr>
Maximum \u0645\u0642\u0627\u0648\u0645\u0629 \u0627\u0644\u062e\u0636\u0648\u0639<\/td>125,000 psi \/ 862 MPa<\/td>135,000 psi \/ 931 MPa<\/td>+10,000 psi \/ +69 MPa<\/td><\/tr>
Minimum \u0645\u0642\u0627\u0648\u0645\u0629 \u0627\u0644\u0634\u062f<\/td>105,000 psi \/ 724 MPa<\/strong><\/td>115,000 psi \/ 793 MPa<\/strong><\/td>+10,000 psi \/ +69 MPa<\/td><\/tr>
Relative minimum yield level<\/td>1.00<\/td>1.105<\/strong><\/td>Approximately +10.5%<\/td><\/tr>
Typical \u0627\u0644\u062f\u0631\u062c\u0629 position<\/td>Moderate-to-higher load<\/td>Higher-load \u0627\u0644\u062d\u0641\u0631<\/td>G105 provides additional static margin<\/td><\/tr><\/tbody><\/table><\/figure>\n\n

The maximum yield value is an acceptance upper limit<\/strong>, not a performance target. Excessively high actual \u0645\u0642\u0627\u0648\u0645\u0629 \u0627\u0644\u062e\u0636\u0648\u0639 can affect the balance between strength, toughness and hardness, so the MTC should confirm that the material remains within the specified \u0627\u0644\u062f\u0631\u062c\u0629 window.<\/p>\n\n

What the 10 ksi Strength Difference Means<\/h2>\n\n

X95 drill pipe<\/a> has a minimum yield strength of 95 ksi<\/strong>, while G105 is 105 ksi<\/strong>.<\/p>\n\n

For the same OD, \u0633\u0645\u0627\u0643\u0629 \u0627\u0644\u062c\u062f\u0627\u0631 and \u0627\u0644\u0623\u0646\u0627\u0628\u064a\u0628-body geometry:<\/p>\n\n

105 \u00f7 95 = 1.105<\/strong><\/p>\n\n

This means the G105 \u0627\u0644\u0623\u0646\u0627\u0628\u064a\u0628 body has about 10.5% more minimum yield-based capacity<\/strong> than the equivalent X95 \u0627\u0644\u0623\u0646\u0627\u0628\u064a\u0628 body. The increase applies to calculated \u0627\u0644\u0623\u0646\u0627\u0628\u064a\u0628-body tensile and torsional yield values when the dimensions are unchanged.<\/p>\n\n

It does not mean the allowable field load can automatically be increased by 10.5%. The final limit may still be controlled by the \u0627\u0644\u0648\u0635\u0644\u0629, tool-\u0627\u0644\u0648\u0635\u0644\u0629 dimensions, wall loss, \u0627\u0644\u062a\u0639\u0628 condition, combined loading and the project design factor.<\/p>\n\n

Same-Size X95 and G105 Performance Example<\/strong><\/strong><\/h3>\n\n
\"\"<\/figure>\n\n

The following example uses a 2-7\/8 in, 10.4 lb\/ft, 0.362 in wall, 2.151 in ID, external-upset \u0627\u0644\u0623\u0646\u0627\u0628\u064a\u0628 body<\/strong>. It shows how the \u0627\u0644\u062f\u0631\u062c\u0629 change affects calculated body performance while all dimensions remain unchanged.<\/p>\n\n

Pipe-Body Property<\/strong><\/strong><\/td>X95<\/strong><\/strong><\/td>G105<\/strong><\/strong><\/td>Increase<\/strong><\/strong><\/td><\/tr>
Tensile yield<\/td>271,503 lb \/ 1,208 kN<\/td>300,082 lb \/ 1,335 kN<\/td>10.5%<\/td><\/tr>
Torsional yield<\/td>14,635 ft-lb \/ 19.84 kN\u00b7m<\/td>16,176 ft-lb \/ 21.93 kN\u00b7m<\/td>10.5%<\/td><\/tr>
Internal pressure rating, published basis<\/td>20,933 psi \/ 1,443 bar<\/td>23,137 psi \/ 1,595 bar<\/td>10.5%<\/td><\/tr>
Collapse rating, published basis<\/td>20,911 psi \/ 1,441 bar<\/td>23,112 psi \/ 1,593 bar<\/td>10.5%<\/td><\/tr><\/tbody><\/table><\/figure>\n\n

These values demonstrate the \u0627\u0644\u062f\u0631\u062c\u0629 effect, not a universal field operating limit. Final ratings must come from the approved product data sheet for the actual OD, \u0633\u0645\u0627\u0643\u0629 \u0627\u0644\u062c\u062f\u0627\u0631, upset, \u0627\u0644\u0648\u0635\u0644\u0629, \u0627\u0644\u0648\u0635\u0644\u0629 and inspection condition. Published \u0623\u0646\u0628\u0648\u0628 \u0627\u0644\u062d\u0641\u0631 data also separates \u0627\u0644\u0623\u0646\u0627\u0628\u064a\u0628-body performance from tool-\u0627\u0644\u0648\u0635\u0644\u0629 performance, which is why \u0627\u0644\u062f\u0631\u062c\u0629 and \u0627\u0644\u0648\u0635\u0644\u0629 cannot be reviewed as one number.<\/p>\n\n