Movable Stimulation Assembly for Selective Zone Perforation
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current systems for stimulating subterranean formations are expensive, time-consuming, and limited in their ability to effectively stimulate multiple zones within long wellbores, often requiring removal of equipment and being inefficient in fluid distribution.
Innovation Solution
A stimulation assembly comprising a perforation device and a resettable sealing device that can move uphole and downhole within a liner conduit, allowing for selective perforation and fluid isolation to stimulate multiple zones without removing the assembly from the well, enabling targeted introduction of stimulant fluids.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If coiled tubing and ball and seat systems are used to supply stimulant fluids to specific regions, then fluid distribution to targeted zones is achieved, but the systems are expensive, time-consuming, and limited in stimulating multiple regions
Solution Approach 1:
The stimulation assembly is designed with movable components that can dynamically reposition within the wellbore. The assembly includes a deployable perforating device and sealable components that can be moved to different depths along the liner conduit, enabling the same equipment to stimulate multiple zones sequentially without removal from the well.
Solution Approach 2:
The liner conduit is divided into multiple discrete zones that can be independently stimulated. The stimulation assembly can isolate specific segments using sealable components and apply stimulant fluids to selected portions, allowing systematic treatment of multiple regions through sequential activation of different segments.
2Adaptability or versatility
If stimulation equipment is removed from the well to stimulate additional zones, then new zones can be accessed, but operational efficiency decreases and costs increase
Solution Approach 1:
The stimulation assembly is designed as a universal system that can perform multiple functions within a single deployment. It includes a perforating device, sealing components, and fluid delivery mechanisms that can operate at multiple locations along the wellbore, eliminating the need for equipment removal and reinstallation while maintaining the ability to access different zones.
Solution Approach 2:
The system enables continuous stimulation operations without interruption from equipment removal. The assembly remains in place and can sequentially treat multiple zones by moving components along the liner conduit, maintaining continuous productive action throughout the stimulation process.
3Productivity
If stimulant fluids are introduced to multiple zones simultaneously, then overall production increases, but fluid distribution control becomes difficult
Solution Approach 1:
The liner conduit is segmented into multiple isolated zones using deployable sealing components. Each zone can be independently accessed and stimulated with controlled fluid injection, allowing precise distribution control while treating multiple regions sequentially or in selected combinations.
Solution Approach 2:
The sealing components and fluid delivery system are designed to be dynamically controllable, allowing operators to selectively activate or deactivate fluid injection to specific zones based on real-time operational requirements, thereby maintaining easy control over fluid distribution patterns.
Data Source
AI summary
Systems and methods for stimulating a plurality of zones of a subterranean formation to increase production of reservoir fluids therefrom. The subterranean formation contains a well that includes a liner that defines a liner conduit, and the systems and methods include stimulating the plurality of zones with a stimulation assembly that is present within the liner conduit without requiring removal of the stimulation assembly from the liner conduit. The stimulation assembly includes a perforation device, which is configured to selectively form one or more perforations in a plurality of portions of the liner, and a resettable sealing device, which is configured to fluidly isolate the plurality of portions of the liner from a plurality of respective downhole portions of the liner. The fluid isolation provides for selective introduction of a stimulant fluid to a selected zone of the subterranean formation that is associated with a corresponding portion of the liner.