A dual-sensor combined real-time water cut measurement system for fluid production profile logging
A dual-sensor, fluid-producing profile technology, applied in wellbore/well components, construction, earthwork drilling and production, etc., can solve problems such as water cut measurement failure, instrument instability, and inability to obtain fluid-producing profile logging data, etc., to achieve Effects of improving logging timeliness, improving stability and reliability, and extensive field adaptability
Active Publication Date: 2022-03-01
PETROCHINA CO LTD +1
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Problems solved by technology
During the well logging process, it is necessary to continuously open and retract the umbrella, which increases the risk of instrument instability; if the liquid inlet cannot be completely closed when the umbrella is retracted, the oil phase fluid will enter the sampling cylinder, so that the total water value cannot be measured normally , resulting in the failure of water cut measurement and the inability to obtain accurate fluid production profile logging data
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[0025] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.
[0026] see Figure 1-16 , the present invention provides a technical solution: as figure 1 As shown, the dual-sensor combined real-time water cut measurement sensor and system for liquid production profile logging in the present invention is composed of a miscibility value measurement sensor 1, a miscibility value housing 2, a connection short circuit 3, a total water value measurement sensor 4, and a total water value measurement sensor. The value shell cons...
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The invention discloses a dual-sensor combined real-time water cut measurement system for fluid production profile logging, a dual-sensor combined real-time water cut measurement system for fluid production profile logging, which performs dynamic measurement of miscible values when the collecting umbrella is opened At the same time, the static measurement of the full water value is carried out, without the operation of closing the umbrella. The dual-sensor combination real-time water cut measurement system for liquid production profile logging, the advantage of the invention lies in the designed dual sensor combination real-time water cut measurement sensor and system for liquid production profile logging, the instrument goes to the downhole production layer to measure During well time, the collecting umbrella is opened to perform dynamic measurement of the miscible value, and at the same time perform dynamic real-time measurement of the total water value. The invented dual sensor combines a real-time water cut measurement sensor with a turbine flowmeter and a flow collector for fluid production profile logging. The umbrella combination improves the logging timeliness, improves the stability and reliability of the liquid production profile logging instrument, and has wider field adaptability.
Description
technical field [0001] The invention relates to the technical field of a dual-sensor combination real-time water cut measurement system for fluid production profile logging, in particular to a dual sensor combination real-time water cut measurement system for fluid production profile logging. Background technique [0002] Fluid production profile logging data is an important basis for formulating and adjusting oilfield development plans, and water cut measurement is one of the important parameters of fluid production profile logging. At present, the water cut measurement method widely used in vertical oil well oil-water two-phase flow in oilfield production is mainly the impedance water cut meter. The work of the impedance water cut meter was originally to determine the water cut by measuring the ratio of the conductivity of the downhole oil-water mixed phase to the conductivity of the water phase. When the collecting umbrella is opened and the liquid inlet is opened, the c...
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IPC IPC(8): E21B49/08
CPCE21B49/08E21B49/0875
Inventor 胡金海黄春辉李屹威王延军刘兴斌刘晓磊杜佳楠张玉辉罗来军
Owner PETROCHINA CO LTD