ELECTROSEISMIC SURVEYING IN EXPLORATION AND PRODUCTION ENVIRONMENTS
First Claim
1. A method for monitoring a drilling operation in a subterranean formation, the method comprising:
- receiving, from a first sensor array, one or more seismic signals caused, at least in part, by the drilling operation in the subterranean formation;
receiving, from the first sensor array, one or more electromagnetic signals generated by an electroseismic or seismoelectric conversion of the one or more seismic signals caused, at least in part, by the drilling operation in the subterranean formation;
determining a property of one or more of the drillstring and the subterranean formation based, at least in part, on the seismic signals and the corresponding electromagnetic signals received from the first sensor array; and
wherein the first sensor array is arranged to monitor the drilling operation.
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Accused Products
Abstract
Systems, methods, and computer programs for monitoring a drilling operation in a subterranean formation include receiving, from a first sensor array, one or more seismic signals caused, at least in part, by the drilling operation in the subterranean formation; receiving, from the first sensor array, one or more electromagnetic signals generated by an electro seismic or seismoelectric conversion of the one or more seismic signals caused, at least in part, by the drilling operation in the subterranean formation; and determining a property of one or more of the drillstring and the subterranean formation based, at least in part, on the seismic signals and the corresponding electromagnetic signals received from the first sensor array. The first sensor array is arranged to monitor the drilling operation.
20 Citations
30 Claims
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1. A method for monitoring a drilling operation in a subterranean formation, the method comprising:
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receiving, from a first sensor array, one or more seismic signals caused, at least in part, by the drilling operation in the subterranean formation; receiving, from the first sensor array, one or more electromagnetic signals generated by an electroseismic or seismoelectric conversion of the one or more seismic signals caused, at least in part, by the drilling operation in the subterranean formation; determining a property of one or more of the drillstring and the subterranean formation based, at least in part, on the seismic signals and the corresponding electromagnetic signals received from the first sensor array; and wherein the first sensor array is arranged to monitor the drilling operation. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 16, 17, 19, 20)
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15. The method of cause the drillstring to perform a controlled percussive drilling operation that is characterized by a programmed percussive sequence;
- and, wherein determining a property of the formation based, at least in part, on the seismic signal and the corresponding electromagnetic signals received from the first sensor array comprises;
performing a controlled percussive drilling operation that is characterized by a programmed percussive sequence; and determining a property of the formation in front of the drill bit based, at least in part, on the seismic signals and the corresponding electromagnetic signals received from the first sensor array.
- and, wherein determining a property of the formation based, at least in part, on the seismic signal and the corresponding electromagnetic signals received from the first sensor array comprises;
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18. A method for monitoring a drilling operation in a subterranean formation, the method comprising:
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receiving, at a time before the drilling operation, first survey data from a first sensor array; processing the first survey data to determine one or more properties of the subsurface earth formation; and wherein the first survey data includes signals generated by a subsurface earth formation in response to a passive-source electromagnetic signal, wherein the electromagnetic signal is generated by an electroseismic or seismoelectric conversion of the passive-source electromagnetic signal; wherein the passive-source electromagnetic signal includes the earth'"'"'s natural electromagnetic field and wherein the processing the first survey data to determine the one or more properties of the subsurface formation is based, at least in part, on a correlation of the earth'"'"'s electromagnetic field and the electromagnetic signal generated by the electroseismic or seismoelectric conversion of the earth'"'"'s natural electromagnetic field; and during the drilling operation; receiving, from the first sensor array, one or more seismic signals caused, at least in part, by the drilling operation in the subterranean formation; receiving, from the first sensor array, one or more electromagnetic signals generated by an electroseismic or seismoelectric conversion of the one or more seismic signals caused, at least in part, by the drilling operation in the subterranean formation; and determining a property of one or more of the drillstring and the subterranean formation based, at least in part, on the seismic signals and the corresponding electromagnetic signals received from the first sensor array.
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21. A system comprising:
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a drillstring for performing a drilling operation in a subsurface formation, the drillstring including a drill bit; a first sensor array to detect one or more seismic signals and one or more electromagnetic signals; a processor; a memory comprising non-transitory executable instructions, that, when executed cause the processor to; receive, from the first sensor array, one or more seismic signals caused, at least in part, by the drilling operation in the subterranean formation; receive, from the first sensor array, one or more electromagnetic signals generated by an electroseismic or seismoelectric conversion of the one or more seismic signals caused, at least in part, by the drilling operation in the subterranean formation; determine a property of one or more of the drillstring and the subterranean formation based, at least in part, on the seismic signals and the corresponding electromagnetic signals received from the first sensor array. - View Dependent Claims (22, 23, 24, 25, 26, 27, 28, 29, 30)
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Specification