System and method for reservoir characterization
First Claim
1. A method for determining characteristics of a formation having a wellbore formed therein, comprising:
- positioning a sensor within the wellbore, wherein the sensor generates a feedback signal representing a temperature in the wellbore, wherein the sensor comprises distributed temperature sensing technology having an optical fiber disposed along an interval within the wellbore;
injecting a fluid into the formation via the wellbore;
generating a data model representing real-time temperature characteristics of the formation, wherein the data model is derived from the feedback signal resulting from the injected fluid; and
analyzing the data model based upon an instruction set to extrapolate characteristics of the formation by comparing the data model to at least a pre-defined thermal characteristic of the formation, wherein the instruction set comprises at least one pre-determined algorithm, mathematical process, or equation.
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Abstract
A method for determining flow distribution in a formation having a wellbore formed therein includes the steps of positioning a sensor within the wellbore, wherein the sensor generates a feedback signal representing at least one of a temperature and a pressure measured by the sensor, injecting a fluid into the wellbore and into at least a portion of the formation adjacent the sensor, shutting-in the wellbore for a pre-determined shut-in period, generating a simulated model representing at least one of simulated temperature characteristics and simulated pressure characteristics of the formation during the shut-in period, generating a data model representing at least one of actual temperature characteristics and actual pressure characteristics of the formation during the shut-in period, wherein the data model is derived from the feedback signal, comparing the data model to the simulated model, and adjusting parameters of the simulated model to substantially match the data model.
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Citations
19 Claims
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1. A method for determining characteristics of a formation having a wellbore formed therein, comprising:
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positioning a sensor within the wellbore, wherein the sensor generates a feedback signal representing a temperature in the wellbore, wherein the sensor comprises distributed temperature sensing technology having an optical fiber disposed along an interval within the wellbore; injecting a fluid into the formation via the wellbore; generating a data model representing real-time temperature characteristics of the formation, wherein the data model is derived from the feedback signal resulting from the injected fluid; and analyzing the data model based upon an instruction set to extrapolate characteristics of the formation by comparing the data model to at least a pre-defined thermal characteristic of the formation, wherein the instruction set comprises at least one pre-determined algorithm, mathematical process, or equation. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A method for determining characteristics of a formation having a wellbore formed therein, comprising:
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positioning a sensor within the wellbore, wherein the sensor provides a substantially continuous temperature monitoring along a pre-determined interval of the wellbore, wherein the sensor includes distributed temperature sensing technology having an optical fiber disposed along the pre-determined interval within the wellbore, and wherein the sensor generates a feedback signal representing temperature measured by the sensor; injecting a first fluid into the wellbore and into at least a portion of the formation adjacent the interval; generating a data model representing actual substantially real-time thermal characteristics of at least a sub-section of the interval, wherein the data model is derived from the feedback signal resulting from the injected first fluid; and analyzing the data model based upon an instruction set to identify temperature patterns in the formation and comparing the generated data model to at least one pre-defined thermal characteristic of the formation to thereby extrapolate characteristics of the formation. - View Dependent Claims (9, 10, 11, 12, 13, 14, 15)
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16. A method for determining characteristics of a formation having a wellbore formed therein, comprising:
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a) positioning a distributed temperature sensor within the wellbore by deploying a coiled tubing into the wellbore, wherein the sensor provides a substantially continuous temperature monitoring along a pre-determined interval of the wellbore, wherein the sensor includes distributed temperature sensing technology having an optical fiber disposed along an interval within the wellbore, and wherein the sensor generates a feedback signal representing temperature measured by the sensor; b) injecting a first fluid through the coiled tubing and into the formation; c) generating a data model representing thermal characteristics of at least a sub-section of the interval, wherein the data model is derived from the feedback signal resulting from the injected first fluid; d) analyzing the data model based upon an instruction set to extrapolate characteristics of the formation by comparing the data model to at least a pre-defined thermal characteristic of the formation; and
repeating steps b) through d) for each of a plurality of sub-sections defining the interval within the wellbore to achieve an improved characterization of the entire interval. - View Dependent Claims (17, 18, 19)
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Specification