Perforator Tool Sleeve Dynamics for Fluid Circulation
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Solution Overview
Problem
Existing perforation tools for oil and gas formations do not allow for fluid circulation after perforation, limiting the effectiveness of hydrocarbon production and requiring tool removal for fracturing operations.
Innovation Solution
A perforator tool with hydraulically operable sleeves that block and unblock perforation and circulation ports, enabling fluid circulation and perforation at predetermined depths without removing the tool from the wellbore, and a method to reduce fracturing breakdown pressure by creating perforated zones without removing tools.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If typical perforation tools are used to perforate the formation, then perforation is achieved, but fluid circulation is not permitted after perforation
Solution Approach 1:
The tool employs movable sleeves that can be positioned in different locations to dynamically control fluid flow paths. The first sleeve blocks the perforation opening initially, then moves to allow fluid circulation. The second sleeve similarly transitions from blocking to allowing flow, enabling the tool to adapt its function from perforation to circulation without removal from the wellbore.
Solution Approach 2:
The tool is divided into distinct functional segments including a perforation section with perforation openings, circulation ports, and multiple sleeves that can independently control different flow paths. This segmentation allows simultaneous or sequential operation of perforation and circulation functions through independent control of each segment.
2Reliability
If the perforator tool is used to perforate the formation, then perforation is achieved, but the tool must be removed for fracturing operations
Solution Approach 1:
The perforator tool is designed to perform multiple functions including perforation, fluid circulation, and serving as a conduit for fracturing operations. The tool housing and flow paths are configured to handle both perforation fluid and fracturing fluid, eliminating the need for tool removal between these operations and reducing overall作业 time.
Solution Approach 2:
The tool enables continuous operation by maintaining its position in the wellbore throughout perforation and subsequent fracturing operations. Fluid can continuously flow through the tool from perforation mode to circulation mode to fracturing mode without interruption caused by tool removal, maximizing operational efficiency.
3Reliability
If fluid flow is blocked to initiate perforation, then perforation occurs, but fluid recirculation is prevented
Solution Approach 1:
The sleeves act as intermediary components that control the transition between perforation and circulation modes. By positioning the sleeves in different locations, the system mediates between the conflicting requirements of blocking flow for perforation initiation and allowing flow for circulation, enabling seamless transition between operational states.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Enables efficient fluid circulation and perforation of formations, reducing breakdown pressure and allowing for perforation and fracturing operations without tool removal, thereby improving hydrocarbon production and reducing formation strength at perforation sites.
Implementation Method 1
Fluid can then be flowed through the perforator tool to a hydraulically operable tool. A portion of the fluid can the be blocked from flowing through the perforator tool and initiating perforation of the formation
Implementation Method 2
perforating at least one location in the wellbore by abrasively perforating out into the formation to create at least one perforated zone
Data Source
AI summary
This disclosure is related to a perforator tool and a method of using the perforator tool to perforate a formation. The perforator tool can include a first and second sleeve and optionally a third sleeve. The perforator tool can also include at least one perforation opening and at least one circulation port. The sleeves are slidably disposed within the perforator tool and can be displaced to permit perforation of the formation, block the perforation openings and open circulation ports.