Downhole fluid analysis
First Claim
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1. A method for downhole fluid analysis comprising:
- providing a fluid sampling tool within a downhole;
acquiring information about formation fluids collected by the fluid sampling tool during drilling;
analyzing the acquired information for making a decision about whether to retain collected fluid samples by using a fluid sampling tool controller; and
controlling one or more downhole operations based on the decision,wherein said fluid sampling tool controller includes a first memory device for storage of job control parameters, a second memory device for storage of collected data, a data pre-processor, a control algorithm bank, and a data compressor, andwherein said first memory device may include information regarding one or a combination of maximum acceptable pumping time, required level of contamination, criteria on composition of a sample that is worthy of retention, criteria on sample integrity, and a station where samples should not be taken.
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Abstract
A method that uses downhole fluid analysis in order to selectively collect and retain formation fluid samples in a drilling environment, as well as, control drilling using downhole fluid analysis.
42 Citations
23 Claims
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1. A method for downhole fluid analysis comprising:
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providing a fluid sampling tool within a downhole; acquiring information about formation fluids collected by the fluid sampling tool during drilling; analyzing the acquired information for making a decision about whether to retain collected fluid samples by using a fluid sampling tool controller; and controlling one or more downhole operations based on the decision, wherein said fluid sampling tool controller includes a first memory device for storage of job control parameters, a second memory device for storage of collected data, a data pre-processor, a control algorithm bank, and a data compressor, and wherein said first memory device may include information regarding one or a combination of maximum acceptable pumping time, required level of contamination, criteria on composition of a sample that is worthy of retention, criteria on sample integrity, and a station where samples should not be taken. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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15. A downhole fluid sampling tool, comprising:
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a fluid sampling tool that includes at least one chamber for the retention of a fluid sample; and a fluid sampling tool controller operatively connected to said fluid sampling tool to receive data from said fluid sampling tool and to send control signals to said fluid sampling tool; wherein said fluid sampling tool and said fluid sampling tool controller are configured for downhole operation and said fluid sampling tool controller is configured to make a decision and send control signals related to retention of fluid samples to said fluid sampling tool during drilling wherein said fluid sampling tool controller includes a first memory device for storage of job control parameter, a second memory device for storage of collected data, a data pre-processor, a control algorithm bank, and a data compressor, and wherein said first memory device includes information regarding one or a combination of maximum acceptable pumping time, required level of contamination, criteria on composition of sample that is worthy of collection, criteria on sample integrity, and a station where samples should not be taken. - View Dependent Claims (16, 17, 18, 19, 20, 21, 22, 23)
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Specification