Accurate Measurement of Dynamic Response of Formation Pressure
In order to obtain the formation pressure parameters accurately and quickly, it is necessary to measure the dynamic response of formation pressure accurately, which is an important step in the exploration and development of oil and gas fields. This paper introduces the basic composition of the press...
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| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | zho |
| Published: |
Editorial Office of Well Logging Technology
2023-04-01
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| Series: | Cejing jishu |
| Subjects: | |
| Online Access: | https://www.cnpcwlt.com/#/digest?ArticleID=5478 |
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| Summary: | In order to obtain the formation pressure parameters accurately and quickly, it is necessary to measure the dynamic response of formation pressure accurately, which is an important step in the exploration and development of oil and gas fields. This paper introduces the basic composition of the pressure measurement system of the formation tester and proposes an accurate measurement scheme for the dynamic response of formation pressure. The scheme takes the Quartzdyne quartz pressure sensor as the core, and based on a hardware acquisition circuit and system software of a hybrid thick film integrated circuit. The pressure, temperature, temperature calibration coefficient, and pressure calibration coefficient of the Quartzdyne quartz pressure sensor are read through the IIC bus. The solution algorithm is used to calculate the true pressure and temperature, and accurate measurement results of the dynamic response of formation pressure are obtained. This paper summarizes four common problems in dynamic measurement of formation pressure, including mechanical and circuit system abnormality, sensor abnormality, unreasonable operation plan design, and uneven wellbore. The scheme proposed in this paper has been applied in hundreds of wells for many years, and can reliably meet the requirements of formation pressure testing at 175℃. |
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| ISSN: | 1004-1338 |