Reactive Composite Packer Seal via Recrystallization for HTHP Wells
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing packers struggle to maintain a reliable seal in high temperature and high pressure wellbore conditions, particularly in deep wells where temperatures exceed 600 degrees F. and pressures reach up to 15,000 psi, leading to challenges in maintaining sealing engagement and withstanding hydraulic pressures.
Innovation Solution
An in-situ swellable packer composed of a cylindrical body made of a swellable material that expands upon contact with water due to a chemical reaction, forming a corrosion-resistant seal through the formation of reactive oxides like magnesium oxide, which reacts with water to form magnesium hydroxide and silicate, creating a recrystallized seal material.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional packer materials are used, then the packer can be manufactured and installed, but it cannot maintain sealing engagement under high temperature and high pressure conditions
Solution Approach 1:
The packer utilizes chemical parameter changes by incorporating reactive oxide materials that undergo chemical reactions with formation water to form corrosion-resistant composite seals. This chemical transformation enables the seal to maintain its structural integrity and sealing capability in high temperature environments where conventional materials would degrade.
Solution Approach 2:
The invention employs composite materials consisting of reactive oxide particles embedded in a binder matrix. This composite structure combines the high-temperature stability of ceramic-like oxide materials with the flexibility needed for sealing, creating a material that maintains sealing engagement at temperatures exceeding 600 degrees F.
2Reliability
If conventional packer materials are used, then the packer can be manufactured and installed, but it cannot withstand high hydraulic pressures without unsetting
Solution Approach 1:
The reactive oxide materials undergo chemical parameter changes when exposed to formation water, transforming into a hardened composite structure. This chemical transformation increases the material's strength and pressure resistance, enabling the packer to withstand hydraulic pressures up to 15,000 psi without unsetting.
Solution Approach 2:
The packer design incorporates a disposable reactive oxide seal that is intended to be consumed or transformed during operation. The reactive oxide particles react with formation water to form a permanent seal, sacrificing the original material form to create a durable sealing structure that maintains configuration under extreme pressure.
3Object-affected harmful factors
If the packer uses reactive composite material, then it forms a corrosion-resistant seal, but the material composition becomes complex
Solution Approach 1:
The invention uses composite materials consisting of reactive oxide particles (such as silica or other oxides) embedded in a binder matrix. This composite structure provides corrosion resistance through the chemically inert oxide particles while the binder maintains the structural integrity and sealability of the packer.
Solution Approach 2:
The reactive oxide composite material is designed with controlled porosity that allows formation water to penetrate and trigger the chemical reaction. The porous structure enables the reactive oxide particles to react with water and form a dense, corrosion-resistant seal layer, balancing material complexity with functional performance.
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 swellable packer effectively forms a durable and reliable seal under extreme conditions, providing a corrosion-resistant barrier that withstands high temperatures and pressures, ensuring the packer remains locked and sealed without unsetting.
Implementation Method 1
The cylindrical body is made of a swellable material expandable vertical to the tube to form an in-situ packer at downhole. The composite material swells on contact with water due to chemical reaction of the composite material.
Implementation Method 2
Magnesium will react with water to form magnesium hydroxide. The magnesium hydroxide will react with silicate or oxide to form a salt.
Implementation Method 3
a high temperature high pressure corrosion resistant composite seal via crystallization of reactive composite
Data Source
AI summary
The Patent Application discloses an in-situ swellable composition suitable for use in subterranean wells. The swellable composition may comprise a composite material. The composite material swells on contact with water due to chemical reaction of the composite material.