Composite bending internal pressure loading testing method for underwater well head equipment
An underwater wellhead and composite loading technology, which is applied in the direction of detecting the appearance of fluid at the leakage point, measuring the increase and deceleration rate of the fluid, and using liquid/vacuum to measure the liquid tightness, etc., can solve the problem of not perfecting the underwater wellhead Problems such as equipment bending load test methods, etc., to improve the stress working conditions and ensure the effect of accuracy
Inactive Publication Date: 2017-12-15
BAOJI PETROLEUM MASCH CO LTD
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[0003] The domestic development of underwater wellhead equipment has just started, and the bending load test of underwater wellhead equipment is in the exploratory stage. So far, there is no perfect bending load test method for underwater wellhead equipment
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[0023] The present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments.
[0024] refer to figure 1 , figure 2 , image 3 , Figure 4 , the inventive method utilizes a set of test bench main body 2, the structure of this test bench main body 2 is, comprises a test bench bracket 7, and the lower end surface of test bench bracket 7 is fixed on the base by two groups of fixed ground beams 17, The lower end surface of the test bench bracket 7 is additionally provided with two loading ground beams 15, and the upper surface of each loading ground beam 15 is provided with two double ear seats 14, and each double ear seat 14 is upwardly connected with a pair of loading liquid cylinders 10. The base of the cylinder is hinged (a total of four loading cylinders 10 are provided), the tops of the piston rods of the pair of loading cylinders 10 are hinged upwards with a loading hoop 8, and the connection between the top of th...
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The invention discloses a composite bending internal pressure loading testing method for underwater well head equipment. The method includes three ways. Firstly, when the tested product is a underwater well head, a test joint, a hydraulic connector and the underwater well head are firmly connected in order, the test joint is in cup joint with an F test adapter on the left side, the underwater well head is in cup joint with an F test adapter on the right side, the F test adapters on each side are fixed through hinging hoops and loading hoops, and a hydraulic control mechanism controls the hydraulic connector to lock the underwater well head. The loading hoops are connected with the piston rod of a loading hydraulic cylinder, a hydraulic control mechanism controls the loading hydraulic cylinder to jack up or pull down the loading hoops, and process is conducted through a data acquisition and control mechanism. Secondly, when the test piece is an underwater Christmas tree body, the underwater Christmas tree body is connected firmly and tested according to the first way. Thirdly, when the test piece is a hydraulic connector, the test is conducted according to the first way. The method has the advantages of simple structure, wide testable product scope, and strong loading capability.
Description
technical field [0001] The invention belongs to the technical field of equipment testing, and relates to a bending internal pressure composite loading test method for underwater wellhead equipment. Background technique [0002] Wellhead devices, Christmas trees, hydraulic connectors and other equipment working underwater will generate a bending load under the transverse load of waves and ocean currents. When the bending load exceeds the maximum allowable bending moment value of the product, it may Wellhead equipment seal failure occurred, which led to catastrophic accidents of crude oil leakage. Therefore, it is a necessary measure to ensure safe underwater production to carry out research on bending load test technology of underwater wellhead equipment and verify the sealing reliability of products under bending load. [0003] The domestic development of underwater wellhead equipment has just started, and the bending load test of underwater wellhead equipment is in the expl...
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IPC IPC(8): G01M3/04G01M3/26
CPCG01M3/04G01M3/26
Inventor 王秉武雷广进刘宏亮侯晓东虞文
Owner BAOJI PETROLEUM MASCH CO LTD