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Rupture Wireless Activation Device for Downhole Applications

IP.com Disclosure Number: IPCOM000237975D
Publication Date: 2014-Jul-23
Document File: 1 page(s) / 62K

Publishing Venue

The IP.com Prior Art Database

Abstract

To shorten the time and reduce the cost for downhole tool activation, this invention discloses a simple and enabling technology combining the advantages of wireless signal transmission and rupture membrane technology. The rupture wireless activation device consists of two major components: outer housing with rupture membrane and wireless signal transmitter as the core. The outer housing is made of metal composite, pure metal, or metal alloy. One side of the housing is built using rupture membrane, which burst at a predetermined differential pressure. The membrane is made out of metal or other material with metal coatings, which shields off the emitted wireless signal from the transmitter inside. Because the controllable rupture pressure, and the small size of the signal transmitter, we are able to ensure the activation of the downhole tools at a wanted depth (triggered by pressure increase along the well) or within a desired time frame (applying extra pressure). This invention can dramatically reduce the cost and non-productive time as comparing to the conventional activation methods. Furthermore, the proposed device can be in-situ placed at the location to activate a downhole tool or drop from the ground surface according to the activation schedule. In both scenarios, the activation process can be further accelerated by pressurizing the annular space of the well. The rupture wireless activation device has an outer housing and a core, as shown in Figure 1. One side the metallic outer housing is made of rupture membrane which bursts at a preset pressure. One or multiple miniaturized signal transmitters serve as the core, which are always on and transmit electromagnetic (EM) signal to activate the targeted downhole tools. Due to the nature of metal, the outer layer will shield the entire EM signal until the rupture membrane breaks, which provides us an easy solution to timely deliver and control the activation of downhole tools comparing with the conventional methods.

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Rupture Wireless Activation Device for Downhole Applications

To shorten the time and reduce the cost for downhole tool activation, this invention discloses a simple and enabling technology combining the advantages of wireless signal transmission and rupture membrane technology.  The rupture wireless activation device consists of two major components: outer housing with rupture membrane and wireless signal transmitter as the core.  The outer housing is made of metal composite, pure metal, or metal alloy.  One side of the housing is built using rupture membrane, which burst at a predetermined differential pressure.  The membrane is made out of metal or other material with metal coatings, which shields off the emitted wireless signal from the transmitter inside.  Because the controllable rupture pressure, and the small size of the signal transmitter, we are able to ensure the activation of the downhole tools at a wanted depth (triggered by pressure increase along the well) or within a desired time frame (applying extra pressure).  This invention can dramatically reduce the cost and non-productive time as comparing to the conventional activation methods.  Furthermore, the proposed device can be in-situ placed at the location to activate a downhole tool or drop from the ground surface according to the activation schedule.  In both scenarios, the activation process can be further accelerated by pressurizing the annular space of the well. 

The rupture wireless activation d...