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Performance Testing Method of Tubing Head and Casing Head

A detection method and casing head technology, which are used in fluid tightness testing, machine/structural component testing, and liquid tightness measurement using liquid/vacuum degree, etc., can solve the problem of increasing the incidence of safety accidents and reducing drilling Process safety, low reliability of tubing head and casing head, etc., to prevent safety accidents, ensure reliability, and increase safety

Active Publication Date: 2021-03-30
CHINA NAT PETROLEUM CORP CHUANQING DRILLING ENG CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] However, the standards specifically require that the tubing head and casing head should be subjected to high and low temperature performance tests under their loaded conditions. The prior art represented by the above-mentioned patent documents has no detection device that can implement this test, resulting in the failure of the tubing head and casing head The reliability of the casing head is low when used, which greatly increases the incidence of safety accidents and reduces the safety during drilling

Method used

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  • Performance Testing Method of Tubing Head and Casing Head

Examples

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Comparison scheme
Effect test

Embodiment 1

[0035] A high and low temperature performance detection process of a tubing head and a casing head under a loaded state, comprising a. putting the inside of the tubing head or casing head into a hanger 6 with a test mandrel, installing a pressure test flange on the lower part, and then Hang it on the mobile trolley, send it into the environmental test chamber 7, and exit the trolley; b, install the connecting rod 4 on the loading device, and lower the loading device to apply the rated load to the tubing head or casing head; c, turn on the heater of the detection device , heating the air temperature in the inner chamber of the tested part 5 to the rated high temperature of 60°C or using the environmental test chamber 7 to lower the temperature to the rated low temperature of -18°C, and using the computer control system to keep the temperature at the rated temperature value; d. Turn on the heating pressure device, pressurize the tested piece 5 to the rated working pressure of 140...

Embodiment 2

[0038]A high and low temperature performance detection process of a tubing head and a casing head under a loaded state, comprising a. putting the inside of the tubing head or casing head into a hanger 6 with a test mandrel, installing a pressure test flange on the lower part, and then Hang it on the mobile trolley, send it into the environmental test chamber 7, and exit the trolley; b, install the connecting rod 4 on the loading device, and lower the loading device to apply the rated load to the tubing head or casing head; c, turn on the heater of the detection device , heating the air temperature in the inner chamber of the tested part 5 to a rated high temperature of 121°C or using the environmental test chamber 7 to lower the temperature to a rated low temperature of -60°C, and using a computer control system to keep the temperature at the rated temperature value; d. Turn on the heating pressure device, pressurize the tested part 5 to the rated working pressure of 140MPa; e,...

Embodiment 3

[0040] A high and low temperature performance detection process of a tubing head and a casing head under a loaded state, comprising a. putting the inside of the tubing head or casing head into a hanger 6 with a test mandrel, installing a pressure test flange on the lower part, and then Hang it on the mobile trolley, send it into the environmental test chamber 7, and exit the trolley; b, install the connecting rod 4 on the loading device, and lower the loading device to apply the rated load to the tubing head or casing head; c, turn on the heater of the detection device , heating the air temperature in the inner chamber of the tested part 5 to the rated high temperature of 80°C or using the environmental test chamber 7 to lower the temperature to the rated low temperature of -30°C, and using the computer control system to maintain the temperature at the rated temperature value; d. Turn on the heating pressure device, pressurize the tested part 5 to the rated working pressure of ...

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Abstract

The invention discloses a performance detection method for a tubing head and a casing head. The method comprises steps as follows: a, the tubing head or the casing head is taken as a detected part, and the detected part is sent into an environmental test chamber; b, a connecting rod is mounted on a loading device, and the loading device is lowered to apply rated load to the detected part; c, air in an inner cavity of the detected part is heated to a rated high temperature of 60-121 DEG C or the temperature of the environment is reduced to a rated low temperature of subzero 18 DEG C-subzero 60DEG C, and the temperature is kept at the rated temperature value; d, a pressure device is started, and the detected part is pressurized to rated working pressure of 1-140 MPa; e, three pressure-temperature cycles are performed; f, pressure stabilization is executed for 3-8 min in each cycle, whether quality and performance of the detected part are qualified is judged according to fluctuating values of temperature and pressure values, the pressure is reduced to 0 MPa, and detection is finished. With adoption of the method, reliability of the tubing head and the casing head in actual use can beguaranteed, and safety accidents can be effectively prevented.

Description

technical field [0001] The invention relates to a detection method of oil drilling equipment under high and low temperature conditions, in particular to a high and low temperature performance detection process of well control equipment and wellhead devices under loading conditions, mainly used for detecting oil pipes in oil drilling equipment head and sleeve head. Background technique [0002] In the prior art, during the construction of oil and gas drilling projects, well control equipment and wellhead devices are operating in vibration every day, and also bear various temperatures and pressures, so their performance is constantly changing. In order to ensure safe drilling Requirements, according to regulations, well control equipment and wellhead devices must be tested for performance after a period of use. At present, such testing not only takes a lot of time, but also can only be carried out simply on the pressure bearing capacity of well control equipment and wellhead d...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N3/18G01M3/28
CPCG01M3/2853G01N3/18G01N2203/0005G01N2203/0048G01N2203/0224
Inventor 唐顺东张志东邓勇刚李淼
Owner CHINA NAT PETROLEUM CORP CHUANQING DRILLING ENG CO LTD