Method and systems for analysis of hydraulically-fractured reservoirs
AssigneeSchlumberger Technology Corporation
InventorsPhilippe Enkababian, Dmitriy Potapenko
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Abstract
Various methods and well systems are provided for characterizing a hydraulically-fractured hydrocarbon-bearing formation that is traversed by a well partitioned into a number of intervals. The methods and well systems analyze surface flow characteristics of fluid that flows from the well (for example, using a multiphase flow meter) in order to characterize local formation properties for one or more intervals for one or more intervals (or other sections) of the well.
Claims42
A method for characterizing a hydraulically-fractured hydrocarbon-bearing formation that is traversed by a well having a plurality of fracturing sleeves, the method comprising:
- i) using a downhole tool to open or close a set of one or more fracturing sleeves of the well;
- ii) after opening or closing the set of one or more fracturing sleeves of the well, analyzing surface flow characteristics of produced fluid that flows from the well back to a surface-located facility;
- and
- iii) deriving at least one local formation property that characterizes the hydraulically-fractured formation adjacent the set of one or more fracturing sleeves of the well based on such surface flow characteristics.
A method for characterizing a hydraulically-fractured hydrocarbon-bearing formation that is traversed by a well that is partitioned into a plurality of well intervals, the method comprising:
- i) using a downhole packer to isolate a set of one or more well intervals that are upstream from the packer from one or more well intervals that are downstream from the packer, wherein the set of one or more well intervals that are upstream from the are in fluid communication with a surface facility, while the one or more well intervals downstream from the packer are fluidly isolated and decoupled from the surface facility;
- ii) after isolating the set of one or more well intervals that are upstream from the packer, analyzing surface flow characteristics of produced fluid that flows from the well back to the surface-located facility;
- and
- iii) deriving at least one local formation property that characterizes the hydraulically-fractured formation adjacent the set of one or more well intervals that are upstream from the packer based on such surface flow characteristics.
A method for characterizing a hydraulically-fractured hydrocarbon-bearing formation that is traversed by a well that is partitioned into a plurality of well intervals, the method comprising:
- i) locating a downhole choking packer in a particular well interval;
- ii) after locating the choking packer in the particular well interval, analyzing surface flow characteristics of produced fluid that flows from the well back to the surface-located facility;
- and
- iii) deriving at least one local formation property that characterize the hydraulically-fractured formation adjacent the particular well interval based on such surface flow characteristics.
A method for characterizing a hydraulically-fractured hydrocarbon-bearing formation that is traversed by a well that is partitioned into a plurality of well intervals, the method comprising:
- analyzing surface flow characteristics of produced fluid that flows from the well back to the surface-located facility over time in order to detect slug flow in the produced fluid and determine properties of such slug flow;
- analyzing the properties of such slug flow or the surface flow characteristics of produced fluid over time to determine one or more well intervals that contribute to such slug flow;
- and
- storing data in computer memory that identifies the one or more well intervals that contribute to such slug flow.
A method for characterizing a hydraulically-fractured hydrocarbon-bearing formation that is traversed by a well that is partitioned into a plurality of well intervals, the method comprising:
- i) locating a downhole tool in a particular well interval where the downhole tool circulates fluid for clean out of the particular well interval;
- ii) analyzing surface flow characteristics of produced fluid that flows from the well back to a surface-located facility;
- and
- iii) deriving at least one property that characterize solids production from the particular well interval based on such surface flow characteristics.
Dependencies are inferred from the claim text.