Drillable Adaptive Turbine Guide Shoe for Sand Bridge Resolution

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Solution Overview

Problem

The existing casing guide shoes fail to effectively run casing in wells with sand bridges or wellbore necking, leading to running failures due to excessive friction and resistance.

Innovation Solution

A drillable adaptive turbine guide shoe comprising an adaptive booster component with a supercharging hollow shaft, shell, disc spring group, jet oscillator, and semi-cylindrical ring, and a power casing shoe component with a turbine shaft, stator, rotor, and guide shoe, which utilizes drilling fluid to generate axial impulse and torque to overcome resistance and friction.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If a conventional guide shoe is used, then the guide shoe can function as a guide tube string for conventional wells, but the casing cannot be effectively run when sand bridges or wellbore necking occur

Engineering Contradiction:

Improveadaptability to sand bridges and wellbore neckingVSAvoidcasing running effectiveness

Core Design Contradiction:

Adaptability or versatilityVSReliability

Solution Approach 1:

The guide shoe incorporates a turbine mechanism that dynamically adjusts its operation based on resistance conditions. When resistance is high (sand bridges or wellbore necking), the turbine rotates to provide rotational force to the guide shoe, enabling it to cut through obstructions. When resistance is low, the guide shoe operates in conventional guidance mode, achieving adaptability to different well conditions.

Inventive Principle:

Principle #15Dynamics

Solution Approach 2:

The system uses the drilling fluid flow itself to power the turbine mechanism. The kinetic energy of the drilling fluid drives the turbine rotor, which automatically converts linear motion into rotational motion to assist the guide shoe in overcoming resistance, eliminating the need for external power sources or complex control systems.

Inventive Principle:

Principle #25Self-service

2Force

If the guide shoe encounters excessive friction and resistance, then the casing running process is blocked, but increasing the guide shoe's cutting capability may cause instability

Engineering Contradiction:

Improvetorque applied to guide shoeVSAvoidguide shoe stability

Core Design Contradiction:

ForceVSStability of the object's composition

Solution Approach 1:

The turbine mechanism provides automatic feedback based on the resistance encountered. When the guide shoe encounters high friction or resistance, the turbine rotor rotates more vigorously, increasing the rotational force applied to the guide shoe. This self-regulating mechanism ensures that the guide shoe receives just the right amount of rotational assistance to overcome resistance without causing instability or excessive cutting.

Inventive Principle:

Principle #23Feedback

3Productivity

If the guide shoe is designed with high cutting capability, then it can overcome sand bridges and wellbore necking, but the guide shoe may become unstable during operation

Engineering Contradiction:

Improvecasing running efficiencyVSAvoidguide shoe operational stability

Core Design Contradiction:

ProductivityVSStability of the object's composition

Solution Approach 1:

The system changes the operational parameters of the guide shoe dynamically. Instead of a fixed high-cutting design, the guide shoe operates with variable rotational force depending on the resistance conditions. The turbine mechanism adjusts the rotational parameter automatically, allowing the guide shoe to maintain stability while achieving high productivity when needed.

Inventive Principle:

Principle #35Parameter changes

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

The adaptive turbine guide shoe effectively expands the drilling hole and runs the casing by adjusting torque in response to friction, solving issues of sand bridges and wellbore necking, thereby improving casing running efficiency and stability.

Implementation Method 1

drilling fluid is introduced into the jet oscillator to generate axial impulse force

Methodology Applied

Scientific EffectJet: Jet

Implementation Method 2

drilling fluid enters the gap between the turbine stator and the turbine rotor, and impacts the turbine rotor to drive the turbine rotor to rotate, and provides torque to the guide shoe

Methodology Applied

Scientific EffectTurbine: Turbine

Implementation Method 3

the disc spring group is built in the cavity

Methodology Applied

Scientific EffectElasticity: Elasticity

Data Source

PatentUS11326400B2Drillable adaptive turbine guide shoe

Publication Date: 2022.05.10 YANGTZE UNIVERSITY

AI summary

Disclosed is a drillable adaptive turbine guide shoe, including an adaptive booster component and a power casing shoe component; the adaptive booster component includes a supercharging hollow shaft, a supercharging shell, a disc spring group, a shunt head, a jet oscillator and a semi-cylindrical ring, the supercharging hollow shaft is slidably connected to the supercharging shell, one end of the supercharging hollow shaft is a liquid inlet end and the other end is closed, a cavity is formed between the supercharging hollow shaft and the supercharging shell, and the disc spring group is built in the cavity, the jet oscillator and the semi-cylindrical ring are mounted on the inner wall of the supercharging shell, and one side of the jet oscillator and the semi-cylindrical ring abuts against the shunt head, the shunt head is sleeved on the outer wall of the supercharging hollow shaft; this disclosure solves the problem that the casing cannot be effectively run when the wellbore has sand bridges or wellbore necking.