Long-distance Pipeline Repair Reinforcement Technology Research

With the rapid development of human society there is an increasing demand for energy, oil and gas industry has been rapid development, pipeline become the important link in the process of production of oil and gas, has become the artery of the oil industry, pipeline transportation in the world has a history of more than 100 years, now the underground oil and gas pipeline has close such as spinning a web. So far the oil tube throughput of developed countries accounted for 80% of its total throughput, refined oil long-distance transportation basic also realized the pipeline; Natural gas pipe throughput of 95%. As one of the five modes of transportation, pipeline transport bring convenient at the same time, the work also highlights important to the safe operation of pipelines. O il and gas pipelines and roads, railways, Bridges, rivers, lies at the intersection of a fiber optic cable, cable construction are also more and more, the security risk is bigger and bigger. So for a variety of management is not in place, supervision does not reach the designated position, the construction method is not correct, damage of the pipeline caused by man- made is also emerge in endlessly. The development and application of various running pipe dimension of repair and pipeline reinforcement technology has also got rapid development.Pipeline in service, the part for a long time in the middle of a corrupt environment, part in high pressure, high temperature or high humidity environment, and pipeline internal often filled with toxic, flammable, explosive, corrosive medium, such as pipeline are susceptible to weathering in the natural environment, such as acid rain corrosion, and the influence of artificial factors and the external load, it is easy to cause various defects and damage. In the event of oil and gas pipeline explosion or leakage, poisoning and explosion can occur or major malignant accidents such as fire. So in order to increase the use of defective pipe fixed number of year, reduce resource waste, must be the flaw pipeline maintenance and reinforcement. Pipeline testing, evaluation, maintenance and reinforcement is an effective guarantee the integrity of the pipeline operation chain, pipeline is to ensure that the pipeline integrity maintenance and reinforcement technology and an important means of extending the service life of the pipeline, so further study of long-distance pipeline maintenance and reinforcement technology to guarantee safety in production, prolong the service life of pipeline, saving resource and other highly production value and significance.This paper through a comprehensive analysis of the current technique and technology of all kinds of pipe repair reinforcement, sums up the advantages and disadvantages of various maintenance reinforcement technology and process principle, combined with compressed gas pipeline maintenance department in the south of C hangqing oilfield reinforcing the status quo, using the method of literature research and practice of combining the field production, summed up the long-distance pipeline repair reinforcement technology of strong pipe technology in the construction process and production specifications, provide the basis for guiding production.