首页>
外国专利>
Active or passive surveillance system for underground formation by means of fixed stations
Active or passive surveillance system for underground formation by means of fixed stations
展开▼
机译:通过固定站进行地下地层的主动或被动监视系统
展开▼
页面导航
摘要
著录项
相似文献
摘要
The surveillance of underground effluent formation (2) and its exploration are carried out by installing various apparatuses or user modules; reception assemblies (Ri, Rj, Rk) such as geophones or hydrophones, state sensors (C1, C2), tools requiring an electrical power supply etc., at different locations along one or more wells (1) drilled into a formation, behind casings used for lining these wells, or alternatively in the annular space between these casings and production tubing, and by connecting these apparatuses to a surface station (4) by a special, multichannel transmission assembly which is simple and reliable. The surface station is capable of adapting its commands as a function of the apparatus to be controlled resultingly, of receiving all the signals which they transmit, whether analog or digitised and encoded, and of adapting to several modes of allocation of the transmission channels. With such a system, long-term, large-scale surveillance operations can be carried out under economically satisfactory conditions. Application to the surveillance of an oil field formation for example. IMAGE
展开▼