Reverse Y-Tool Bypass for ESP Well Logging Access
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Solution Overview
Problem
The existing ESP systems in oil and gas wells pose a challenge when trying to perform well logging or intervention tasks, as they block access to the bottom of the well, preventing the use of well logging tools or intervention equipment, and require in-line mounting for Y-tool equipment, which complicates the deployment of production logging tools.
Innovation Solution
A reverse Y-tool system with a first tubing branch in line with production tubing and a second offset branch configured to couple with a production plug or survey plug, along with a retrievable ESP and an orienting whipstock, allows for the deployment of wellbore components into the bypass branch, enabling logging and intervention while maintaining ESP functionality.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If an ESP system is installed in-line with production tubing, then the ESP can efficiently retrieve oil, but access to the bottom of the well is blocked preventing logging or intervention work
Solution Approach 1:
The system is divided into two separate branches: the first tubing branch carries the ESP system for oil production, while the second tubing branch provides dedicated access for logging and intervention tools. This segmentation allows both functions to operate simultaneously without interference.
Solution Approach 2:
The Y-tool structure acts as an intermediary device that couples both the ESP system and logging/intervention equipment to the production tubing. It provides a transition point where production flow and tool access are separated into different paths while maintaining connection to the wellbore.
2Adaptability or versatility
If a Y-tool is used to allow logging and intervention work, then access to the wellbore is enabled, but the ESP system must be attached to the offset side which complicates installation and removal
Solution Approach 1:
Instead of the traditional Y-tool configuration where the ESP would be on the offset side, this invention inverts the arrangement by placing the ESP in the in-line first tubing branch and providing logging/intervention access through the second offset branch. This inversion simplifies ESP installation while maintaining tool access capability.
3Ease of operation
If the ESP is attached in-line with production tubing for easy installation, then installation is simplified, but logging tools cannot be deployed below the ESP
Solution Approach 1:
The system transitions from a single-dimensional in-line arrangement to a two-dimensional branched configuration. The logging and intervention tools are directed into the second tubing branch that offsets from the main production line, creating a separate dimensional path that bypasses the ESP system entirely.
Data Source
AI summary
A system and method for deploying a reverse Y-tool are provided. The system and method may include a first tubing branch in line with production tubing and a second tubing branch offset from the first tubing branch. The Y-tool system may also have a retrievable Electric Submersible Pump (ESP) and an orienting whipstock deployed in the first tubing branch. The orienting whipstock may direct other wellbore components to the second tubing branch. The radius of the second tubing branch is less than a radius of the first tubing branch. A reverse Y-tool mandrel is also provided that includes an upper head comprising an upper connection to production tubing, a middle body comprising a discriminating section profile, and a bottom section comprising a lower connection to production tubing and a lower connection to bypass tubing.