Research On Shaft Vibration Identification Technology Upon Hydrophone Principle

In order to meet the need of the offshore oil resources exploration and development,encryption adjustment technology is widely used in offshore oil field,and the well spacing density is sharply increased.Certainly the risk of a collision between the encryption adjustment Wells and old Wells in space position is further increased,and this risk has frequently happened in field operation.Once hole collision accidents,it will seriously affect the normal production of oil field,not only cause huge economic losses,but also may cause serious safety accidents,even casualties.Therefore,how to prevent hole collision between cluster wells and encryption adjustment wells has become more and more important during drilling process.Now,both at home and abroad have developed a series of touch method,but these methods are still difficult to meet the needs of the scene in some complicated cases.And most new methods studies are only in the stage of theoretical research,only a few pilot tests have been carried out.Research based on drill casing head movement induced vibration signal detection of borehole touch monitoring method.This method has a wide range of applications in the offshore platforms.Furthermore,it has obtained a good effect of monitoring.But monitoring depth is limited,and now it is just not more than 1000 m shall apply.In order to get further depth and accuracy in the early warning surveillance,this paper probes into a kind of shaft vibration identification technology on the basis of the hydrophone principle.In this paper,we analyze the propagation law of vibration wave,and presents a set of anti-collision monitor system in multiform.Based on the results of this research experiment,for vibration sensor,thers is a non-linear increasing relationship between the received vibration signals and the launch of the standard signal.For hydrophone,thers is a linear increasing relationship between the received vibration signals and the launch of the standard signal,within a cetain frequency band.This linear relationship is more simple and intuitive,which has higher value to project.Ultimately it will provide a new idea for intensive study on the shaft vibration identification technology and afford a solid technical support for the field crash-proof monitoring work.