Regulations For Oil And Casing Hydrostatic Testing

Oil casing is widely used in the oil and gas industry. Similar to radiographic and ultrasonic flaw detection processes, hydrostatic pressure testing is an important means to check the overall quality of steel pipes during the steel pipe manufacturing process. Its function is to detect the anti-leakage function of steel pipes under standard test pressure and steady-state voltage. So what are the regulations for the hydrostatic pressure test of oil casing? In this article, Union Steel will give you a brief introduction.

1. The hydrostatic test pressure value of couplings and threaded pipes is the lowest value among the hydrostatic test pressure of flat-end pipes, the maximum hydrostatic test pressure of couplings, and the internal pressure leakage resistance, but the maximum pressure is 69 MPa, and the calculated pressure is usually rounded to The nearest 0.5 MPa.

2. According to API requirements, hydrostatic test pressure measuring devices should be calibrated within 4 months before each use.

3. If customers have special requirements, higher hydrostatic test pressure can be used.

4. Hydrostatic test leakage is proof of rejection.

5. Unless agreed between the supplier and the buyer, coupling blanks, coupling materials, adjacent raw materials or Q125 steel grade pup joints do not need to be subjected to hydrostatic testing.