Production logging processes and systems
First Claim
Patent Images
1. A process comprising:
- producing fluid from a subterranean environs into a well at spaced apart locations;
releasing at least two markers into the fluid produced from said subterranean environs, each of the at least two markers being released at different locations of the spaced apart locations;
measuring the elapsed time from the step of releasing until each of said at least two markers reaches a common point along the well, wherein the fluid is produced at a substantially constant production rate during the steps of releasing and measuring; and
determining the flow rates of fluid produced from said subterranean environs at each of said spaced apart locations based upon said elapsed time.
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Abstract
Processes and systems for logging production of fluid produced into a well bore without intervention of the well are disclosed. Two or more markers may be introduced into produced fluid at spaced apart locations along a well. The time for each marker to reach a common point may be measured and production rates for produced fluids at each spaced apart location may be calculated.
158 Citations
20 Claims
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1. A process comprising:
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producing fluid from a subterranean environs into a well at spaced apart locations; releasing at least two markers into the fluid produced from said subterranean environs, each of the at least two markers being released at different locations of the spaced apart locations; measuring the elapsed time from the step of releasing until each of said at least two markers reaches a common point along the well, wherein the fluid is produced at a substantially constant production rate during the steps of releasing and measuring; and determining the flow rates of fluid produced from said subterranean environs at each of said spaced apart locations based upon said elapsed time. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. A process for determining flow rates from a subterranean well comprising:
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producing fluid from a subterranean environs into a well at spaced apart locations; simultaneously releasing at least two markers into the fluid produced from the subterranean environs, each of the at least two markers being released at different locations of the spaced apart locations; detecting each of said at least two markers at a common point along the well; and determining fluid velocity and flow rate of the fluid produced into the well at each of said spaced apart locations from the diameter of the well through which the fluid is produced and the elapsed time from releasing to detection of each of said at least two markers. - View Dependent Claims (14, 15, 16, 17, 18, 19, 20)
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Specification