In this paper methods of fuzzy comprehensive judgement is brought forward to evaluate corrosion degree of injecting pipeline, and calculating steps are also given.

Two methods are put forward to sort for injecting pipeline corrosion influence factors and to determine main influence factors,namely gray relation analysis and two layers BP neural network in this paper.

A kind of new method is put forward to sort for injecting pipeline corrosion influence factors and determine main influence factors, namely two layers modified Genetic Algorithm (GA) neural network method.

Predicting residual life of water injection pipeline based on support vector machines.;

Systematic design of robot used for detecting water injection pipeline in oilfield;

Based on the relevant data and methods provided,a formula for calculating economic flow rate in water injection pipeline is derived combining with the characteristics of water in-jection engineering in oilfields.

Assessment of Capacity of Bearing Pressure of Steam Injection Pipeline and Verif ication of Full-scale Test;

Based on the corrosion investigation in reinjection pipelines from 7 sewage plants in Shengli Oilfield,the paper adopts grey correlation method to analyze correlative degree of all the factors affecting on sewage corrosivity,and then obtains a correlative degree sequence.