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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

Active Publication Date: 2012-09-26
DAQING OILFIELD CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] In order to solve the problem that the lower limit of the existing logging tool is too high and the influence of degassing cannot be overcome, resulting in large deviations in measurement results

Method used

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

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Embodiment Construction

[0009] The present invention will be further described below in conjunction with accompanying drawing:

[0010] Depend on figure 1 As shown, the logging tool for layered oil production of low-production liquid oil wells includes a circuit barrel 1, a working barrel 2 is connected to the lower end of the circuit barrel 1, a collector center barrel 3 with a reduced diameter at the lower end, and a support rod 4, and the lower end of the support rod 4 is connected to There is a current collector drive device 5, a turbine flowmeter 6 is connected inside the working cylinder 2, an inner cylinder 7 is connected at the diameter reduction of the working cylinder 2 and the central cylinder 3 of the collector, and the central cylinder 3 of the collector and the inner cylinder 7 A gas-phase shunt channel 8 is formed between them, and the lower end of the central cylinder 3 of the collector is connected to the lower end of the outer working cylinder 2. The umbrella rib 10 of the collector...

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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.

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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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E21B49/08G01F1/708G01F1/32
Inventor 庄海军周家强袁智蕙刘会东贲亮吴恩明
Owner DAQING OILFIELD CO LTD
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