Integrated reservoir optimization
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Abstract
A method of managing a fluid or gas reservoir is disclosed which assimilates diverse data having different acquisition time scales and spatial scales of coverage for iteratively producing a reservoir development plan that is used for optimizing an overall performance of a reservoir. The method includes: (a) generating an initial reservoir characterization, (b) from the initial reservoir characterization, generating an initial reservoir development plan, (c) when the reservoir development plan is generated, incrementally advancing and generating a capital spending program, (d) when the capital spending program is generated, monitoring a performance of the reservoir by acquiring high rate monitor data from a first set of data measurements taken in the reservoir and using the high rate monitor data to perform well-regional and field-reservoir evaluations, (e) further monitoring the performance of the reservoir by acquiring low rate monitor data from a second set of data measurements taken in the reservoir, (f) assimilating together the high rate monitor data and the low rate monitor data, (g) from the high rate monitor data and the low rate monitor data, determining when it is necessary to update the initial reservoir development plan to produce a newly updated reservoir development plan, (h) when necessary, updating the initial reservoir development plan to produce the newly updated reservoir development plan, and (i) when the newly updated reservoir development plan is produced, repeating steps (c) through (h). A detailed disclosure is provided herein relating to the step (a) for generating the initial reservoir characterization and the step (b) for generating the initial reservoir development plan.
306 Citations
71 Claims
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1-42. -42. (canceled)
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43. A method of generating a simulator production and reserves forecast, a mechanism representing a process that is active in a reservoir being chosen in response to a first development plan adapted for developing a reservoir, comprising the step of:
(a) in response to a history calibrated model and a set of constraints, running a simulator production and reserves forecast model and, responsive thereto, generating a simulator production and reserves forecast representing a manner by which said reservoir responds to said first development plan. - View Dependent Claims (44, 45, 46, 47, 48)
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49. A method of generating an analytical production and reserves forecast, a mechanism representing a process that is active in a reservoir being chosen in response to a first development plan adapted for developing a reservoir, comprising the step of:
(a) in response to a first forecast and a second forecast and a third forecast and a set of constraints, running an analytical production and reserves forecast model and, responsive thereto, generating an analytical production and reserves forecast representing a manner by which said reservoir responds to said first development plan. - View Dependent Claims (50, 51, 52, 53, 54, 55, 56, 57, 58)
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59. A method of generating a production and reserves forecast, comprising the steps of:
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(a) generating a simulator production and reserves forecast, a mechanism representing a process that is active in a reservoir being chosen in response to a first development plan adapted for developing a reservoir, the generating step (a) including the step of, (a1) in response to a history calibrated model and a set of constraints, running a simulator production and reserves forecast model and, responsive thereto, generating a simulator production and reserves forecast representing a first manner by which said reservoir responds to said first development plan;
(b) generating an analytical production and reserves forecast, the generating step (b) including the step of, (b1) in response to a first forecast and a second forecast and a third forecast and a set of constraints, running an analytical production and reserves forecast model and, responsive thereto, generating an analytical production and reserves forecast representing a second manner by which said reservoir responds to said first development plan. - View Dependent Claims (60, 61, 62, 63, 64, 65, 66, 67, 68, 69, 70, 71)
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Specification