Combining belief networks to generate expected outcomes
First Claim
1. A method for determining an oilfield parameter for a drilling operation in an oilfield, the oilfield having a well site with a drilling tool advanced into a subterranean formation with geological structures and reservoirs therein, the method comprising:
- identifying a first set of decision factors about the drilling operation and a second set of decision factors about the drilling operation, wherein each of the first set of decision factors is contained within a first set of nodes, and wherein each of the second set of decision factors is contained within a second set of nodes, wherein both the first set of nodes and the second set of nodes contain a set of common nodes;
associating the first set of nodes to create a first belief network and associating the second set of nodes to create a second belief network;
associating the set of common nodes of the first belief network with the set of common nodes of the second belief network to form a multinet belief network; and
generating at least one oilfield parameter from the multinet belief network.
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Accused Products
Abstract
A method is described for determining an oilfield parameter for a drilling operation in an oilfield, the oilfield having a well site with a drilling tool advanced into a subterranean formation with geological structures and reservoirs therein. A first set of decision factors and a second set of decision factors about the drilling operation are identified. Each of the first set of decision factors is contained within a first set of nodes, and each of the second set of decision factors is contained within a second set of nodes. Both the first set of nodes and the second set of nodes contain a set of common nodes, which are common to both the first and second sets. The first set of nodes is associated to create a first belief network and the second set of nodes is associated to create a second belief network. Then, the set of common nodes of the first belief network is associated with the set of common nodes of the second belief network to form a multinet belief network. Oilfield parameter can be generated from the multinet belief network.
18 Citations
23 Claims
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1. A method for determining an oilfield parameter for a drilling operation in an oilfield, the oilfield having a well site with a drilling tool advanced into a subterranean formation with geological structures and reservoirs therein, the method comprising:
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identifying a first set of decision factors about the drilling operation and a second set of decision factors about the drilling operation, wherein each of the first set of decision factors is contained within a first set of nodes, and wherein each of the second set of decision factors is contained within a second set of nodes, wherein both the first set of nodes and the second set of nodes contain a set of common nodes; associating the first set of nodes to create a first belief network and associating the second set of nodes to create a second belief network; associating the set of common nodes of the first belief network with the set of common nodes of the second belief network to form a multinet belief network; and generating at least one oilfield parameter from the multinet belief network. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A method for determining an oilfield parameter for a drilling operation in an oilfield, the oilfield having a well site with a drilling tool advanced into a subterranean formation with geological structures and reservoirs therein, the method comprising:
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assigning a first degree of certainty to a first belief network in a multinet belief network comprising a plurality of belief networks; assigning a second degree of certainty to a second belief network within the multinet belief network; and generating at least one oilfield parameter from the first belief network and the second belief network. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17, 18, 19)
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20. A method for determining an oilfield parameter for an oilfield operation in an oilfield, the oilfield having a well site with a drilling tool advanced into a subterranean formation with geological structures and reservoirs therein, the method comprising:
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identifying a first set of decision factors about the drilling operation and a second set of decision factors about the drilling operation, wherein each of the first set of decision factors is contained within a first set of nodes, and wherein each of the second set of decision factors is contained within a second set of nodes, wherein both the first set of nodes and the second set of nodes contain a set of common nodes; associating the first set of nodes to create a first belief network and associating the second set of nodes to create a second belief network; associating the set of common nodes of the first belief network with the set of common nodes of the second belief network to form a multinet belief network; and generating at least one oilfield parameter from the multinet belief network. - View Dependent Claims (21, 22, 23)
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Specification