Drill-Pipe Fluid Injection for Geological Stratum Testing
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Solution Overview
Problem
Conventional techniques for determining injectivity and evaluating geological stratum features in wellbores are rudimentary and lack cost-effective, user-friendly methods for measuring properties like geological sweeping effect and residual saturation, especially in open and cased hole wellbores.
Innovation Solution
A process involving a downhole apparatus positioned on a drill pipe with packers to seal the wellbore, allowing fluid injection and circulation, including the use of pumps to introduce fluids into the geological stratum, and performing tests to measure saturation levels.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If conventional techniques are used for determining injectivity, then the process can be performed, but the measurement precision and cost-effectiveness are insufficient
Solution Approach 1:
The downhole apparatus is divided into functionally independent components: packers for sealing, pumps for fluid injection, sensors for measurement, and communication devices for data transmission. This segmentation allows each component to be optimized independently while working together to provide precise injectivity measurements without requiring an overly complex integrated system.
Solution Approach 2:
The downhole apparatus is designed as a multi-functional tool that can perform multiple operations including fluid injection, saturation measurement, and geological stratum evaluation. This universal design eliminates the need for separate specialized equipment for each function, reducing overall device complexity while maintaining high measurement precision across different applications.
2Measurement precision
If advanced measurement systems are implemented, then measurement precision improves, but ease of operation decreases
Solution Approach 1:
The downhole apparatus includes automated sensors and measurement systems that operate autonomously once deployed. The packers automatically seal the wellbore, pumps can be controlled remotely, and sensors continuously monitor saturation levels without requiring constant manual intervention. This self-service capability maintains high measurement precision while significantly improving ease of operation for field personnel.
Solution Approach 2:
The system incorporates real-time feedback mechanisms where sensors monitor geological stratum properties and communicate this data to the surface. This feedback loop allows operators to adjust injection parameters dynamically based on actual measurements, maintaining precision while simplifying operation through automated control rather than complex manual calculations.
3Productivity
If injection processes are used to increase hydrocarbon recovery, then productivity improves, but device complexity increases
Solution Approach 1:
The downhole apparatus merges multiple functions into a single integrated tool: fluid injection capability, saturation measurement sensors, packer sealing, and communication systems are combined in one device. This merging enables hydrocarbon recovery enhancement through injection processes while avoiding the complexity of coordinating multiple separate pieces of equipment.
Solution Approach 2:
The apparatus uses nested components where sensors are positioned within the downhole environment, packers are contained within the tool body, and communication devices are integrated into the structure. This nesting arrangement allows compact design that reduces device complexity while maintaining all necessary functions for improved hydrocarbon recovery through injection processes.
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
Enables accurate measurement of geological stratum properties, enhancing hydrocarbon recovery by displacing native fluids and providing a sweeping effect, while being economical and easy to implement.
Implementation Method 1
The injection of such materials into a wellbore can facilitate certain advantages in the downhole environment... inject at least a portion of the fluid from the downhole apparatus into a geological stratum... displacing native fluids so that evaluation of the nearby geological stratum can be tested
Implementation Method 2
setting at least one packer to seal a space between at least a portion of the downhole apparatus and an inner surface of the wellbore
Data Source
AI summary
Processes for injection of fluids into a wellbore via drill pipe. In some embodiments, the process can include positioning a downhole apparatus on a drill pipe. The process can also include placing the downhole apparatus at a desired station depth within a wellbore. The process can also include attaching a cable to the downhole apparatus from an up-hole environment. The process can also include setting at least one packer to seal a space between at least a portion of the downhole apparatus and an inner surface of the wellbore. The process can also include introducing a fluid to the downhole apparatus through the drill pipe and using a pump to inject at least a portion of the fluid into a geological stratum.