Method for evaluating carbon dioxide injection profile of horizontal well
A carbon dioxide and evaluation method technology, which is applied in the direction of earthwork drilling, wellbore/well components, and production fluids, can solve the problems of difficult production of low-permeability reservoirs, achieve geological storage, high-efficiency geological storage, and delay breakthrough time Effect
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Image
Examples
Embodiment 1
[0031] according to figure 2 It can be seen that a method for evaluating the carbon dioxide injection profile of a horizontal well comprises the following steps:
[0032] (1) Determine the reservoir permeability distribution along the horizontal well according to the logging data, and determine the experimental core in proportion to the frequency distribution according to the permeability;
[0033] (2) Use the determined core (unsaturated formation water) to carry out supercritical carbon dioxide (CO2) 2 )
[0034] Flooding experiments to obtain supercritical carbon dioxide (CO 2 ) injection volume;
[0035] (3) Draw the pressure difference-permeability-CO of the reservoir in the research block through the displacement experiment results 2 Inflow relationship chart;
[0036] (4) For carbon dioxide injection (CO 2 ) horizontal wells, in this step, in order to realize the rationality of the experimental simulation, the similarity criterion is used to perform equivalent tr...
Embodiment 2
[0061] to inject CO 2 Take the displacement exploitation of an oil field as an example, to get its horizontal well CO 2 Injection profile, which includes the following steps:
[0062] (1) Assume that according to the completion logging data of the horizontal well drilled in the oil field, the permeability range is 0.2-252mD, and then according to the permeability difference of the drilled well, the permeability of the core to be tested is 0.2mD, 4mD, 8mD, 12mD , 16mD, 20mD, 24mD, 28mD...252mD;
[0063] (2) Using the rock core determined in step (1), carry out supercritical CO 2 Displacement experiments, assuming that the obtained experimental results are used to obtain the pressure difference-permeability-CO 2 Inflow relationship chart, such as figure 1 shown;
[0064] (3) Use the typical cores in this block to saturate the formation water, and then carry out the displacement experiment to obtain the CO during the experiment. 2 Inject the relationship between pore volume...
PUM
Abstract
Description
Claims
Application Information
- R&D Engineer
- R&D Manager
- IP Professional
- Industry Leading Data Capabilities
- Powerful AI technology
- Patent DNA Extraction
Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.
© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com