초록 ▼

A plurality of electronically controlled downhole tools and systems for use in production wells is presented. These tools and systems include safety valve and pressure monitoring systems, remotely controlled inflation/deflation devices, remotely actuated downhole tool stop systems, remotely controll

A plurality of electronically controlled downhole tools and systems for use in production wells is presented. These tools and systems include safety valve and pressure monitoring systems, remotely controlled inflation/deflation devices, remotely actuated downhole tool stop systems, remotely controlled fluid/gas control systems, remotely controlled variable choke and shut-off valve systems and a retrievable sensor side pocket mandrel.

대표청구항 ▼

[ What is claimed is:] [1.] A downhole inflation/deflation device comprising:a valve housing having a valve opening therethrough, said valve opening including a larger diameter cavity and said opening also including an inflation port;an inflatable element communicating with said valve housing and ad

[ What is claimed is:] [1.] A downhole inflation/deflation device comprising:a valve housing having a valve opening therethrough, said valve opening including a larger diameter cavity and said opening also including an inflation port;an inflatable element communicating with said valve housing and adapted for inflation by fluid transmitted from said valve opening;a motor in said valve housing;a valve operatively connected to said motor and movable between an open position wherein said valve resides in said cavity and a closed position wherein said valve resides in said valve opening;a mandrel housing said inflatable element and said valve housing;a first pressure sensor residing in said cavity;a second pressure sensor residing in said inflation port;at least one proximity sensor for sensing relative movement between said valve housing and said mandrel; andan electronic controller communicating with said first and second pressure sensors and said proximity sensor.