Formation water type identification method, pollution rate determination method and calculation device
By generating a fluid density change curve and identifying the formation water type, the problem of low efficiency in the identification of formation water type in the prior art is solved, real-time identification and efficient identification of formation water type are realized, and cost and risk are reduced.
CN113640178BActive Publication Date: 2025-03-25CHINA OILFIELD SERVICES LTD
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Patent Information
- Application Number
- CN202110912286.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- Filing Date
- 2021-08-10
- Publication Date
- 2025-03-25
- Estimated Expiration
- 2041-08-10
AI Technical Summary
Technical Problem
The inefficient identification of stratigraphic water type in the prior art increases the cost and risk of the exploration process, and multiple sampling and analysis are required to determine the type of stratigraphic water.
Method used
By collecting pumping parameters and actual fluid density measurements at multiple moments in the preset time window, a fluid density change curve is generated, and the formation water type is identified based on this curve, without multiple samplings to the ground for analysis.
Benefits of technology
Real-time identification of stratigraphic water types is realized, identification efficiency is improved, sampling costs are saved, operation risks are reduced, and it provides a basis for the sampling timing of stratigraphic water.
✦ Generated by Eureka AI based on patent content.
Abstract
The present invention discloses a formation water type identification method, a contamination rate determination method and a calculation device. The formation water type identification method includes: collecting pumping parameters and actual fluid density measurement values corresponding to multiple moments in a preset time window, generating a fluid density change curve based on the collected pumping parameters and actual fluid density measurement values, and identifying the formation water type based on the fluid density change curve. With this solution, the formation water type can be monitored in real time without taking samples from the well multiple times to the ground for analysis. On the one hand, it improves the efficiency of identifying the formation water type and provides a basis for determining the sampling time of the formation water. On the other hand, it saves sampling costs and reduces operational risks.
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