Downhole device for data acquisition during hydraulic fracturing operation and method thereof

Abstract

A downhole system including a downhole device for data acquisition during fracing operations is disclosed. It includes a bypass device (102) operatively coupleable to for instance a frac plug (10) and is adapted to allow downhole fluid flow through the bypass device (102) and frac plug (10) but also permits the closure of that path whilst providing at least one second fluid path (120) for fluid communication between at least one data acquisition device (108) provided to detect at least one physical property such as pressure and a region inside the wellbore located uphole of the bypass device (102).

Description

[0001] The present invention relates to devices and processes used in well drilling. More specifically, the invention relates to a downhole device for data acquisition during a hydraulic fracturing operation and a method thereof. Another aspect of the invention relates to a drop device for data acquisition during a hydraulic fracturing operation and a method thereof.INTRODUCTION

[0002] In drilling operations for the production of oil and gas deposits, operators strive to maximize both the rate of flow and the overall quantity of hydrocarbon that can be recovered from the subsurface formation or reservoir to the surface. Therefore, various stimulation techniques have been developed and one of the most commercially successful techniques today is hydraulic fracturing, also referred to as “fracking” or “fracing”.

[0003] The hydraulic fracturing process involves targeting a portion of the strata surrounding the wellbore and injecting a specialized fluid into the wellbore at pressures sufficie...

Examples

Embodiment Construction

[0109]The following definitions will be followed in the specification. As used herein, the term “wellbore” refers to a wellbore or borehole being provided or drilled in a manner known to those skilled in the art. The wellbore may be ‘open hole’ or ‘cased’, being lined with a tubular string. Reference to up or down will be made for purposes of description with the terms “above”, “up”, “upward”, “upper”, or “upstream” meaning away from the bottom of the wellbore along the longitudinal axis of a work string and “below”, “down”, “downward”, “lower”, or “downstream” meaning toward the bottom of the wellbore along the longitudinal axis of the work string. Similarly ‘work string’ refers to any tubular arrangement for conveying fluids and / or tools from a surface into a wellbore. In the present invention, a coiled tubing string or a drill pipe string is the preferred work string.

[0110]Referring to FIGS. 1 to 6, a downhole device 100 is shown comprising a bypass sub tool 102, a data acquisiti...

[0001] The present invention relates to devices and processes used in well drilling. More specifically, the invention relates to a downhole device for data acquisition during a hydraulic fracturing operation and a method thereof. Another aspect of the invention relates to a drop device for data acquisition during a hydraulic fracturing operation and a method thereof.INTRODUCTION

[0002] In drilling operations for the production of oil and gas deposits, operators strive to maximize both the rate of flow and the overall quantity of hydrocarbon that can be recovered from the subsurface formation or reservoir to the surface. Therefore, various stimulation techniques have been developed and one of the most commercially successful techniques today is hydraulic fracturing, also referred to as “fracking” or “fracing”.

[0003] The hydraulic fracturing process involves targeting a portion of the strata surrounding the wellbore and injecting a specialized fluid into the wellbore at pressures sufficie...

Examples

Embodiment Construction

[0109]The following definitions will be followed in the specification. As used herein, the term “wellbore” refers to a wellbore or borehole being provided or drilled in a manner known to those skilled in the art. The wellbore may be ‘open hole’ or ‘cased’, being lined with a tubular string. Reference to up or down will be made for purposes of description with the terms “above”, “up”, “upward”, “upper”, or “upstream” meaning away from the bottom of the wellbore along the longitudinal axis of a work string and “below”, “down”, “downward”, “lower”, or “downstream” meaning toward the bottom of the wellbore along the longitudinal axis of the work string. Similarly ‘work string’ refers to any tubular arrangement for conveying fluids and / or tools from a surface into a wellbore. In the present invention, a coiled tubing string or a drill pipe string is the preferred work string.

[0110]Referring to FIGS. 1 to 6, a downhole device 100 is shown comprising a bypass sub tool 102, a data acquisiti...

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