초록 ▼

A system (100) for selective activation of explosive devices (126, 128, 130, 132) includes a surface controller (102), a downhole controller (106) operable to communicate bidirectionally with the surface controller over a first communication link (108) and a plurality of downhole remote units (114,

A system (100) for selective activation of explosive devices (126, 128, 130, 132) includes a surface controller (102), a downhole controller (106) operable to communicate bidirectionally with the surface controller over a first communication link (108) and a plurality of downhole remote units (114, 116, 118, 120) operable to communicate bidirectionally with the downhole controller (106) over a second communication link (112). One or more sensors (162) are operably associated with the downhole controller (106) and one of the explosive devices (126, 128, 130, 132) is operably associated with each of the downhole remote units (114, 116, 118, 120) such that, responsive to a detonation event, the sensors (162) detect the intensity level of the detonation which is communicated from the downhole controller (106) to the surface control (102) over the first communication link (108).

대표청구항 ▼

What is claimed is: 1. A single trip method for selective activation of perforating guns in a tool string that is operably positionable in a wellbore, the method comprising:providing a surface controller;positioning a downhole controller in the tool string, the downhole controller operable to commun

What is claimed is: 1. A single trip method for selective activation of perforating guns in a tool string that is operably positionable in a wellbore, the method comprising:providing a surface controller;positioning a downhole controller in the tool string, the downhole controller operable to communicate bidirectionally with the surface controller over a first communication link;positioning a plurality of downhole remote units in the tool string downhole of the downhole controller, the downhole remote units operable to communicate bidirectionally with the downhole controller over a second communication link;operably associating a perforating gun with each of the downhole remote units;positioning the tool string in the wellbore such that a first perforating gun is located proximate a first zone;sending a fire command sent over the first communication link from the surface controller to the downhole controller;sending a fire command over the second communication link from the downhole controller to the first perforating gun to perforate the first zone;detonating the first perforating gun;detecting data associated with the detonation of the first perforating gun with a plurality of sensors operably associated with the downhole controller;determining an intensity level of the detonation using the data from the plurality of sensors;communicating the intensity level of the detonation from the downhole controller to the surface controller over the first communication link;determining that the first zone should be reperforated based upon the intensity level of the detonation; andrepositioning the tool string in the wellbore such that a second perforating gun is located proximate the first zone.