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A downhole real-time gas splitter and system for fluid production profile logging

A liquid production profile and gas diversion technology, applied in wellbore/well components, measurement, drilling equipment, etc., can solve the problems of low gas production, low liquid production wells, etc. Effect

Active Publication Date: 2021-03-19
PETROCHINA CO LTD +1
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In view of this, the present invention provides a downhole real-time gas diverter and system for liquid production profile logging, which reduces and eliminates the influence of gas on the measurement of liquid production and water cut, and can still be used under oil-gas-water three-phase conditions. Obtain more accurate fluid production profile logging data to solve the problem of fluid production profile logging in low gas and low liquid production wells

Method used

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  • A downhole real-time gas splitter and system for fluid production profile logging
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  • A downhole real-time gas splitter and system for fluid production profile logging

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Embodiment Construction

[0058] The present invention will be described below based on examples, but it should be noted that the present invention is not limited to these examples. In the following detailed description of the invention, some specific details are set forth in detail. However, the present invention can be fully understood by those skilled in the art about the parts that are not described in detail.

[0059] In addition, those of ordinary skill in the art should understand that the provided drawings are only for illustrating the objects, features and advantages of the present invention, and the drawings are not actually drawn to scale.

[0060] At the same time, unless the context clearly requires, the words "include", "include" and other similar words in the entire specification and claims should be interpreted as an inclusive meaning rather than an exclusive or exhaustive meaning; that is, "include but not limited to the meaning of ".

[0061] The gas splitter can achieve the effect ...

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Abstract

The invention discloses an underground real-time gas distributor used for liquid producing profile logging, and relates to the field of liquid producing profile logging of oilfield development. The underground real-time gas distributor comprises a gas exhaust tube, wherein the gas exhaust tube is provided with a gas runner structure and a gas exhaust tube liquid runner; one end of the gas exhausttube is connected with a confluent-liquid umbrella central tube; the other end of the gas exhaust tube is connected a gas exhaust short circuit; a confluent-liquid umbrella is fixedly arranged on theouter side tube wall of the confluent-liquid umbrella central tube; a confluent-liquid umbrella central tube liquid runner is provided inside the confluent-liquid umbrella central tube; a gas inlet channel and a confluent-liquid umbrella central tube liquid inlet are further provided on the confluent-liquid umbrella central tube; the gas inlet channel is positioned inside the confluent-liquid umbrella; the confluent-liquid umbrella central tube liquid inlet is formed in the lower part of the gas inlet channel; the gas exhaust channel communicates with the gas runner structure and the gas inletchannel to form an inner gas exhaust channel; and the umbrella edge of the confluent-liquid umbrella fits to the well wall. The invention further discloses a gas distributor system. The underground real-time gas distributor solves the liquid producing profile logging problem of a well with a low gas yield and a low liquid yield.

Description

technical field [0001] The invention relates to the field of liquid production profile logging in oilfield development, in particular to a downhole real-time gas splitter and system for liquid production profile logging. Background technique [0002] Fluid production profile logging is an important supporting technology for oilfield development, and fluid production profile logging data is an important basis for formulating and adjusting oilfield development plans. During the development process, when the flowing pressure is greater than the saturation pressure, the produced fluid of the production layer is mainly oil and water, without gas, and is in the oil-water two-phase flow liquid. In the late stage of oilfield development, when the flow pressure is lower than the saturation pressure, the dissolved gas in the crude oil will come out and exist in the form of free gas. The appearance of gas will cause the three-phase flow of oil, gas and water in the downhole. The compos...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E21B47/00E21B17/00
Inventor 李军黄春辉李雷李屹威刘兴斌张巍刘艳玲王延军邢建民庄严
Owner PETROCHINA CO LTD
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