The establishment of the deepwater pressure tank provides a great convenience for the deepwater submarine pipeline bulking test,which could contribute studying the deepwater submarine pipeline bulking by real test.For the complexity and specificity of the test and lack of experience,it consumed a lot of human and material resources.There would be lots of errors during the tests.Therefore the schedule of the test is very important and necessary.Scheduling the test by Project software and giving some recommendations and implementation measures is very helpful for the test.

It's found in the tests of pipelines' buckling that the original sealing technique of the deep-water pressure container is time-consuming,ineffective,insecure and always unsuccessful.For these phenomena,a brand-new method and process of sealing technique is adopted to greatly improve the situation: numbering and cleaning the studs in the preliminary process to prevent jamming during the installation of nuts,taking a new accuracy-control method to avoid leakage and rework,dividing for sealing technology and choosing different sealing solutions according to different working pressures.The experiments show that the new method significantly upgrades the reliability,availability,security and efficiency of the sealing technique.

In order to observe the pipeline buckling process in the test and measure the pipeline strain in the whole process,a process flow and method are designed and used in the deepwater submarine pipeline buckling experiment data acquisition.The key to the data acquisition is how to protect the strain gages to make sure that it can output precisely test data in simulated deepwater environment.Finally,it presents an example to explain the feasibility of this method in deepwater submarine pipeline buckling experiment data acquisition.