Collector capable of automatically controlling gas separation for measuring production profile of oil well

A technology for gas separation and production profiles, applied in measurement, wellbore/well components, earthwork drilling and production, etc., can solve problems such as large deviation, complex three-phase flow state of oil, gas and water, and meaningless measurement, and achieve The effect of accurate measurement results

Active Publication Date: 2009-11-18
DAQING OILFIELD CO LTD +1
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Problems solved by technology

At present, the domestic oil well liquid production profile measurement mainly adopts the flow-collecting measurement method. After the flow is collected, the fluid in the oil well casing enters the flow-collection measurement channel. Due to the reduction of the formation pressure, the fluid in the domestic oil well casing is already oil, gas and water. In the state of three-phase coexistence, due to the significant difference in physical properties between the gas phase and

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  • Collector capable of automatically controlling gas separation for measuring production profile of oil well
  • Collector capable of automatically controlling gas separation for measuring production profile of oil well

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Embodiment Construction

[0010] The present invention will be further described below in conjunction with embodiment:

[0011] The automatically controllable gas separation type collector used for oil well production profile measurement includes an upper joint 15. The upper part of the hollow upper joint 15 has an oil-water outlet 1. The measured oil-water two-phase flows out from the oil-water outlet 1. The bottom of the upper joint 15 is connected to There is a collecting umbrella 5, and the middle part of the upper joint 15 is threadedly connected to the middle pipe 17, and the cavity at the bottom of the middle pipe 17 and the outer pipe 16 is the oil-water collecting channel 2. There is an outer pipe 16 outside the middle pipe 17, and the outer pipe 16 is threadedly connected with the upper joint 15 and the lower joint 18 respectively, and the bottom of the middle pipe 17 is threaded with the outer pipe 16, and there is an annular space between the outer pipe 16 and the middle pipe 17. The gas se...

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Abstract

The invention discloses a collector capable of automatically controlling gas separation for measuring a production profile of an oil well. The main working parts of the collector comprise an oil-water collecting channel (2), a gas separation outlet (3), a gas separation channel (4), a collecting umbrella (5), a gas separation inlet (6), a float switch (7), a booster spring (8) and an oil-water phase collecting inlet (9); the collector structurally comprises a gas-phase separation cavity, the gas separation channel, the float switch for controlling the gas-phase separation, and an oil-water collecting channel. By separating the gas phase under the controllable conditions with the invention, the simple two-phase flow substitutes for the complex tri-phase flow, therefore, the measurement results are more accurate.

Description

Technical field: [0001] The patent of the present invention is applied to the field of oil field logging, and is used for the automatic control of the gas separation type collector used for the measurement of the oil well production profile. Background technique: [0002] The purpose of oil well fluid production profile measurement is to understand the oil and water production status of each production layer of the oil well. For oil wells, oilfield geology is concerned with the oil production and water production of the oil well, and the production of the oil well does not include the gas phase. At present, the domestic oil well liquid production profile measurement mainly adopts the flow-collecting measurement method. After the flow is collected, the fluid in the oil well casing enters the flow-collection measurement channel. Due to the reduction of the formation pressure, the fluid in the domestic oil well casing is already oil, gas, and water. In the state of three-phase ...

Claims

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Application Information

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IPC IPC(8): E21B47/00E21B49/08
Inventor 庄海军周家强刘兴斌马水龙刘慧东贲亮袁智惠
Owner DAQING OILFIELD CO LTD
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