System and method to automate data acquisition in a wireless telemetry system

Patent metadata

Field	Value
Publication number	US-10711601-B2
Application number	US-201916456977-A
Country	US
Kind code	B2
Filing date	Jun 28, 2019
Priority date	Dec 15, 2017
Publication date	Jul 14, 2020
Grant date	Jul 14, 2020

Abstract

A system and method to automate data acquisition in a wireless telemetry network optimizes data acquisition to best match a target data set that the user desires given the performance limitations of the telemetry network. The user defines the target data set by providing inputs regarding a target quality of the target data set relative to a data set that has been produced and stored by a communication node in the network. The performance limitations of the network are defined in a system operating envelope. A data acquisition cycle is then automatically initiated and propagated in the network to acquire an actual data set that is an optimal match for the user's target given the system operating envelope.

First claim

What is claimed is:

1. A method of acquiring data in a wireless telemetry network that includes a plurality of wireless communication nodes in communication with a data acquisition system and with equipment that observes a parameter of interest, the method comprising:
storing, in a wireless communication node of the telemetry network, a produced data set that corresponds to observations of a parameter of interest by equipment that is in communication with the telemetry network;
defining communication characteristics associated with the telemetry network; and
based on the communication characteristics, adapting acquisition of an actual data set from the produced data, wherein the actual data set is a subset of the produced data set.

2. The method as recited in claim 1 , wherein defining the communication characteristics comprises observing the communication characteristics over time, and wherein adapting acquisition comprises dynamically adapting acquisition of the actual data set based on current observed communication characteristics of the telemetry network.

3. The method as recited in claim 2 , wherein the communication characteristics include at least one of communication channel capacity and communication channel latency.

4. The method as recited in claim 2 , further comprising defining a target data set to acquire from the produced data set, and wherein adapting acquisition comprises optimizing acquisition so that the actual data set is an optimal match of the target data set given the current communication characteristics associated with the telemetry network.

5. The method as recited in claim 4 , wherein defining the target data set comprises specifying a desired quality of the actual data set relative to the produced data set, wherein the desired quality is at least one of a sampling rate, a data sample error, and an acquisition lag.

6. The method as recited in claim 4 , wherein optimizing acquisition comprises adapting a routing of the actual data set through the telemetry network.

7. The method as recited in claim 4 , wherein optimizing acquisition comprises selecting a type of data transformation to perform on the produced data set.

8. The method as recited in claim 7 , wherein the data transformation comprises a wavelet decomposition, and the method further comprises segmenting the produced data set into time segments, and applying the wavelet decomposition to each segment to generate a set of wavelet coefficients for each segment.

9. The method as recited in claim 8 , further comprising:
encoding the wavelet coefficients into bits; and
classifying the bits according to a classification that ranges from most significant bits to least significant bits.

10. The method as recited in claim 9 , further comprising selecting a subset of bits based on the classification, and transmitting the selected subset to the data acquisition system.

11. A method of acquiring telemetry data in an acoustic communications network that includes a plurality of acoustic communication nodes deployed in a wellbore extending from a surface into a hydrocarbon-producing formation, comprising:
gathering, by a first acoustic communication node, a downhole data set corresponding to a parameter of interest observed in the wellbore;
observing performance limitations of the acoustic communications network;
dynamically adapting acquisition of an actual data set to transmit to the surface based on current observed performance limitations, wherein the actual data set is a subset of the downhole data set.

12. The method as recited in claim 11 , further comprising receiving the actual data set at the surface.

13. The method as recited in claim 11 , wherein dynamically adapting acquisition comprises selecting routing of a set of queries to propagate through the communication network to acquire the actual data set.

14. The method as recited in claim 11 , wherein dynamically adapting acquisition comprises selecting, by the first acoustic communication node, the actual data set from the downhole data set based on the current observed performance limitations of the acoustic communication network.

15. The method as recited in claim 14 , wherein dynamically adapting acquisition further comprises selecting, by the first acoustic communication node, a type of processing to perform on the downhole data set prior to transmission of the actual data set to the surface.

16. The method as recited in claim 14 , wherein dynamically adapting acquisition further comprises selecting, by the first acoustic communication node, the actual data set based on knowledge of a previous actual data set transmitted to the surface.

17. The method as recited in claim 16 , wherein the knowledge is based on receipt by the first communication node of an acknowledgement that the previous actual data set was received at the surface.

18. A system for acquiring telemetry data from a communication network deployed in a wellbore, comprising:
a telemetry system located at a surface to acquire data associated with a downhole operation;
downhole equipment located in the wellbore to observe parameters of interest associated with the downhole operation; and
a network of communication nodes coupled to an acoustic transmission medium at spaced apart locations extending between the telemetry system and the downhole equipment, wherein a first communication node is configured to gather a first downhole data set from the downhole equipment corresponding to an observed parameter of interest over time, and wherein the network has intrinsic data throughput limitations,
wherein the telemetry system automatically builds a set of queries to acquire an actual data set from the network given the intrinsic data throughput limitations of the network, wherein the actual data set is a subset of the first downhole data set and is an optimal match of a target data set defined by a user of the telemetry system.

19. The system as recited in claim 18 , wherein the first communication node receives a query from the set of queries and, in response, selects a method for processing the downhole data set so that the actual data set can be optimally acquired given the intrinsic throughput limitations of the network.

20. The system as recited in claim 19 , wherein the method for processing comprises a wavelet decomposition.

Assignees

• Schlumberger Technology Corp

Inventors

• Sarac Sukru
• Probel Clement
• Vannuffelen Stephane
• Gelman Andriy
• Croux Arnaud
• Temer Elias
• Mouffok Khaled

Classifications

• E21B47/14 Primary

  using acoustic waves · CPC title