Offshore Wellbore Servicing Fluid Using Organic Carrier Suspension
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Solution Overview
Problem
There is an ongoing need for a wellbore servicing fluid and methods of making and using it in offshore environments where equipment and space are limited, while minimizing environmental impact, particularly in offshore oil and gas production where conventional wellbore servicing fluids are not suitable due to harsh conditions and environmental concerns.
Innovation Solution
A wellbore servicing fluid comprising a suspension composition that includes a particulate material, an organic carrier fluid, and a suspension viscosifier, which can be used as a cementitious fluid for cementing or as a spacer fluid to separate drilling fluid from cementitious fluid, is developed. This composition is designed to be stable, environmentally friendly, and can be easily handled and metered, using components that are on the PLONOR list to ensure minimal environmental risk.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If conventional wellbore servicing fluids are used in offshore operations, then basic cementing and separation functions are achieved, but environmental harm increases and handling difficulty increases due to harsh conditions and limited equipment
Solution Approach 1:
The patent changes the chemical parameters of the servicing fluid by using an organic carrier fluid instead of water, and incorporates specific additives (suspension viscosifier, fluid loss agent, biocide) to modify the fluid's properties. This allows the fluid to maintain stability in harsh offshore conditions while being environmentally friendly by using biodegradable components.
Solution Approach 2:
The patent creates a composite fluid system combining organic carrier fluid, particulate material, suspension viscosifier, fluid loss agent, and biocide. This composite composition provides multiple functions simultaneously: environmental friendliness through biodegradable components, operational stability through the suspension system, and performance control through various additives, resolving the contradiction between environmental protection and handling ease.
2Duration of action of moving object
If wellbore servicing fluid is stored for extended periods, then availability for offshore operations is improved, but stability maintenance becomes more difficult under harsh conditions
Solution Approach 1:
The patent applies preliminary action by incorporating a suspension viscosifier and biocide into the fluid composition before storage. The suspension viscosifier pre-establishes a stable suspension system that prevents particulate settling during extended storage, while the biocide pre-prevents microbial growth that could compromise stability over time, allowing the fluid to remain stable for extended periods in harsh offshore conditions.
Solution Approach 2:
The patent modifies the rheological parameters of the fluid by adding a suspension viscosifier, which changes the flow and stability characteristics. This parameter change enables the fluid to maintain its composition stability during extended storage periods by preventing sedimentation and phase separation, even under the harsh temperature and pressure conditions of offshore operations.
3Adaptability or versatility
If limited equipment and space are available in offshore operations, then operational flexibility is improved, but device complexity must be reduced
Solution Approach 1:
The patent applies universality by designing a servicing fluid that performs multiple functions simultaneously: it serves as both a cementing fluid and a spacer fluid, provides suspension stability, controls fluid loss, and prevents microbial growth through integrated additives. This multi-functionality reduces the need for separate equipment and procedures, thereby reducing device complexity while maintaining operational flexibility in space-constrained offshore environments.
Solution Approach 2:
The patent merges the functions of multiple conventional fluids into a single composition. By combining the cementing function, spacer function, suspension stability, fluid loss control, and biocidal protection into one integrated servicing fluid, the patent eliminates the need for separate equipment and handling procedures for each function, thereby reducing device complexity while preserving operational flexibility in offshore settings with limited equipment and space.
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 wellbore servicing fluid provides stable and effective cementing and separation capabilities, is environmentally friendly, and can be stored and transported for extended periods, addressing the challenges of limited equipment and space in offshore operations while reducing environmental impact.
Implementation Method 1
a suspension composition that includes a particulate material, an organic carrier fluid, and a suspension viscosifier
Implementation Method 2
a suspension viscosifier
Implementation Method 3
a fluid loss agent
Implementation Method 4
a biocide
Data Source
AI summary
A method comprising (a) contacting a suspension composition, water, and optionally one or more additives to form a wellbore servicing fluid at a location proximate a wellsite; wherein the suspension composition comprises a particulate material, an organic carrier fluid, and a suspension viscosifier; and (b) placing the wellbore servicing fluid in a wellbore penetrating a subterranean formation. The wellsite comprises an offshore platform, a floating vessel, or combinations thereof; and wherein the wellbore is offshore. A suspension composition comprising a particulate material, an organic carrier fluid, and a suspension viscosifier; wherein the particulate material is substantially insoluble in the organic carrier fluid; wherein the particulate material comprises a water-interactive material and/or a water-insoluble material; and wherein the organic carrier fluid comprises a glycol and/or a glycol ether.