{"id":15698,"date":"2026-06-16T11:41:03","date_gmt":"2026-06-16T03:41:03","guid":{"rendered":"https:\/\/www.drillpipes.com\/x95-vs-g105-%d0%b1%d1%83%d1%80%d0%b8%d0%bb%d1%8c%d0%bd%d0%b0%d1%8f-%d1%82%d1%80%d1%83%d0%b1%d0%b0\/"},"modified":"2026-09-18T16:01:23","modified_gmt":"2026-09-18T08:01:23","slug":"x95-vs-g105-%d0%b1%d1%83%d1%80%d0%b8%d0%bb%d1%8c%d0%bd%d0%b0%d1%8f-%d1%82%d1%80%d1%83%d0%b1%d0%b0","status":"publish","type":"post","link":"https:\/\/www.drillpipes.com\/ru\/x95-vs-g105-%d0%b1%d1%83%d1%80%d0%b8%d0%bb%d1%8c%d0%bd%d0%b0%d1%8f-%d1%82%d1%80%d1%83%d0%b1%d0%b0\/","title":{"rendered":"X95 vs G105 \u0431\u0443\u0440\u0438\u043b\u044c\u043d\u0430\u044f \u0442\u0440\u0443\u0431\u0430"},"content":{"rendered":"\n

X95 and G105 are API 5DP \u0431\u0443\u0440\u0438\u043b\u044c\u043d\u0430\u044f \u0442\u0440\u0443\u0431\u0430 body \u043a\u043b\u0430\u0441\u0441s with minimum \u043f\u0440\u0435\u0434\u0435\u043b \u0442\u0435\u043a\u0443\u0447\u0435\u0441\u0442\u0438s of 95,000 psi and 105,000 psi respectively. X95 and G105 are API 5DP \u0431\u0443\u0440\u0438\u043b\u044c\u043d\u0430\u044f \u0442\u0440\u0443\u0431\u0430 \u043a\u043b\u0430\u0441\u0441s defined by minimum \u043f\u0440\u0435\u0434\u0435\u043b \u0442\u0435\u043a\u0443\u0447\u0435\u0441\u0442\u0438: 95,000 psi (655 \u041c\u041f\u0430) for X95 and 105,000 psi (724 \u041c\u041f\u0430) for G105. With the same \u043d\u0430\u0440\u0443\u0436\u043d\u044b\u0439 \u0434\u0438\u0430\u043c\u0435\u0442\u0440 and \u0442\u043e\u043b\u0449\u0438\u043d\u0430 \u0441\u0442\u0435\u043d\u043a\u0438, G105 provides approximately 10.5% more minimum \u0442\u0440\u0443\u0431\u0430-body yield capacity<\/strong>, giving additional margin where X95 is insufficient under combined tension, \u043a\u0440\u0443\u0442\u044f\u0449\u0438\u0439 \u043c\u043e\u043c\u0435\u043d\u0442 and overpull.<\/p>\n\n

\"\"<\/figure>\n\n

\u043a\u043b\u0430\u0441\u0441 selection must be based on the complete \u0431\u0443\u0440\u0438\u043b\u044c\u043d\u0430\u044f \u0442\u0440\u0443\u0431\u0430 assembly<\/strong>, not \u0442\u0440\u0443\u0431\u0430-body strength alone. Tool-\u0441\u043e\u0435\u0434\u0438\u043d\u0435\u043d\u0438\u0435 capacity, \u0441\u043e\u0435\u0434\u0438\u043d\u0435\u043d\u0438\u0435 \u043a\u0440\u0443\u0442\u044f\u0449\u0438\u0439 \u043c\u043e\u043c\u0435\u043d\u0442, remaining \u0442\u043e\u043b\u0449\u0438\u043d\u0430 \u0441\u0442\u0435\u043d\u043a\u0438, \u0443\u0441\u0442\u0430\u043b\u043e\u0441\u0442\u044c exposure, \u0441\u043a\u0432\u0430\u0436\u0438\u043d\u0430 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 \u0441\u043e\u0435\u0434\u0438\u043d\u0435\u043d\u0438\u0435 and inspected condition can support it.<\/strong> \u0441\u043a\u0432\u0430\u0436\u0438\u043d\u0430 depth or \u043d\u0430\u043f\u0440\u0430\u0432\u043b\u0435\u043d\u043d\u043e\u0435 \u0431\u0443\u0440\u0435\u043d\u0438\u0435 alone is not a sufficient reason to up\u043a\u043b\u0430\u0441\u0441 the \u043a\u043b\u0430\u0441\u0441.<\/p>\n\n

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

The \u043a\u043b\u0430\u0441\u0441 number represents the specified minimum \u043f\u0440\u0435\u0434\u0435\u043b \u0442\u0435\u043a\u0443\u0447\u0435\u0441\u0442\u0438 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 \u0431\u0443\u0440\u0438\u043b\u044c\u043d\u0430\u044f \u0442\u0440\u0443\u0431\u0430 \u043a\u043b\u0430\u0441\u0441s, but G105 has a higher controlled yield and tensile-strength window.<\/p>\n\n

\"\"<\/figure>\n\n
Mechanical Property<\/strong><\/strong><\/td>X95 Drill Pipe<\/strong><\/strong><\/td>G105 Drill Pipe<\/strong><\/strong><\/td>Difference<\/strong><\/strong><\/td><\/tr>
Minimum \u043f\u0440\u0435\u0434\u0435\u043b \u0442\u0435\u043a\u0443\u0447\u0435\u0441\u0442\u0438<\/td>95,000 psi \/ 655 MPa<\/strong><\/td>105,000 psi \/ 724 MPa<\/strong><\/td>+10,000 psi \/ +69 \u041c\u041f\u0430<\/td><\/tr>
Maximum \u043f\u0440\u0435\u0434\u0435\u043b \u0442\u0435\u043a\u0443\u0447\u0435\u0441\u0442\u0438<\/td>125,000 psi \/ 862 \u041c\u041f\u0430<\/td>135,000 psi \/ 931 \u041c\u041f\u0430<\/td>+10,000 psi \/ +69 \u041c\u041f\u0430<\/td><\/tr>
Minimum \u043f\u0440\u043e\u0447\u043d\u043e\u0441\u0442\u044c \u043d\u0430 \u0440\u0430\u0437\u0440\u044b\u0432<\/td>105,000 psi \/ 724 MPa<\/strong><\/td>115,000 psi \/ 793 MPa<\/strong><\/td>+10,000 psi \/ +69 \u041c\u041f\u0430<\/td><\/tr>
Relative minimum yield level<\/td>1.00<\/td>1.105<\/strong><\/td>Approximately +10.5%<\/td><\/tr>
Typical \u043a\u043b\u0430\u0441\u0441 position<\/td>Moderate-to-higher load<\/td>Higher-load \u0431\u0443\u0440\u0435\u043d\u0438\u0435<\/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 \u043f\u0440\u0435\u0434\u0435\u043b \u0442\u0435\u043a\u0443\u0447\u0435\u0441\u0442\u0438 can affect the balance between strength, toughness and hardness, so the MTC should confirm that the material remains within the specified \u043a\u043b\u0430\u0441\u0441 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, \u0442\u043e\u043b\u0449\u0438\u043d\u0430 \u0441\u0442\u0435\u043d\u043a\u0438 and \u0442\u0440\u0443\u0431\u0430-body geometry:<\/p>\n\n

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

This means the G105 \u0442\u0440\u0443\u0431\u0430 body has about 10.5% more minimum yield-based capacity<\/strong> than the equivalent X95 \u0442\u0440\u0443\u0431\u0430 body. The increase applies to calculated \u0442\u0440\u0443\u0431\u0430-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 \u0441\u043e\u0435\u0434\u0438\u043d\u0435\u043d\u0438\u0435, tool-\u0441\u043e\u0435\u0434\u0438\u043d\u0435\u043d\u0438\u0435 dimensions, wall loss, \u0443\u0441\u0442\u0430\u043b\u043e\u0441\u0442\u044c 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 \u0442\u0440\u0443\u0431\u0430 body<\/strong>. It shows how the \u043a\u043b\u0430\u0441\u0441 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 \u043a\u043b\u0430\u0441\u0441 effect, not a universal field operating limit. Final ratings must come from the approved product data sheet for the actual OD, \u0442\u043e\u043b\u0449\u0438\u043d\u0430 \u0441\u0442\u0435\u043d\u043a\u0438, upset, \u0441\u043e\u0435\u0434\u0438\u043d\u0435\u043d\u0438\u0435, \u0437\u0430\u043c\u043a\u043e\u0432\u043e\u0435 \u0441\u043e\u0435\u0434\u0438\u043d\u0435\u043d\u0438\u0435 and inspection condition. Published \u0431\u0443\u0440\u0438\u043b\u044c\u043d\u0430\u044f \u0442\u0440\u0443\u0431\u0430 data also separates \u0442\u0440\u0443\u0431\u0430-body performance from tool-\u0441\u043e\u0435\u0434\u0438\u043d\u0435\u043d\u0438\u0435 performance, which is why \u043a\u043b\u0430\u0441\u0441 and \u0441\u043e\u0435\u0434\u0438\u043d\u0435\u043d\u0438\u0435 cannot be reviewed as one number.<\/p>\n\n