Stratification oil production logging instrument of low-yield liquid oil well

A technology of oil production and logging tools, applied in the field of logging tools, can solve problems such as high lower limit, deviation of measurement results, and inability to overcome the influence of degassing, and achieve the effect of eliminating the influence of gas phase, reducing deviation and improving accuracy
CN101660408BActive Publication Date: 2012-09-26DAQING OILFIELD CO LTD +1
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
DAQING OILFIELD CO LTD
Publication Date
2012-09-26

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Abstract

The invention relates to a stratification oil production logging instrument of a low-yield liquid oil well, mainly solving the problem that the existing logging instruments can not overcome degassing influence, causing bigger deviation of a measurement result. The invention is characterized in that a circuit barrel (1) is connected with a working barrel (2), a lower end-reducing current collectorcenter cylinder (3), an inner barrel (7), a support bar (4), a current collector drive device (5), a turbine flowmeter (6), a current collecting umbrella (9), a float switch (15), a booster spring (16), an oil-water interface detection array electrode (17) and a gas phase distributary channel (8), wherein the working barrel (2) is provided with an oil-water phase current collecting outlet (12) and a gas phase current collecting outlet (13), and the current collector center cylinder (3) is provided with a gas phase separating inlet (14) and an oil-water phase current collecting inlet (18). Thestratification oil production logging instrument of the low-yield liquid oil well can automatically control gas phase separation, thereby eliminating gas phase influence and reducing the deviation ofthe measurement result.
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Description

Technical field:

[0001] The invention relates to a well logging instrument used for well logging in the field of oil production in an oil field, in particular to a well logging instrument for layered oil production of a low liquid production well. Background technique:

[0002] With the development of oilfields, the single-well fluid production of low-production fluid wells in oilfields generally ranges from 1 to 10m 3 / d, the water cut is about 50% or lower, and the fluid production of some wells is even lower than 3m 3 / d, and generally accompanied by degassing. For low-yield oil wells, oilfield geologists focus on the oil production of each layer of the oil well. Therefore, the measurement of low-yield oil wells must focus on the measurement of oil flow, and the logging tool must be able to effectively overcome the influence of gas phase. The lower limit of the currently used production profile logging tools is too high and cannot overcome the influence of degassing, re...

Claims

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