Stratified static pressure combination tool for water injection well

A water injection well and static pressure technology, which is applied in wellbore/well components, measurement, earthwork drilling and production, etc. It can solve problems such as inaccurate measurement results, achieve accurate formation parameters, balance instrument force, and reduce the probability of instrument damage Effect
CN101397905AActive Publication Date: 2009-04-01DAQING OILFIELD CO LTD +1
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
DAQING OILFIELD CO LTD
Publication Date
2009-04-01

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Abstract

The invention relates to a water injection well layering static pressure composite instrument which mainly solves the problem that the existing water injection well layering pressure measuring tool can not simultaneously measure flow and pressure and inaccurate measuring results are caused. The composite instrument is characterized in that: one side of a switch (1) is provided with a liquid inlet (3) and the lower part thereof is connected with a differential pressure flow meter (12) provided with an upper channel (5) by internal threads; the upper part of the upper channel (5) is provided with a water nozzle (3) and the middle part thereof is provided with a sensor (6), a sensor (7) and a sensor (8) in sequence. The lower part of the differential pressure flow meter (12) is connected with a delivering positioner (16) provided with a lower channel (9) by an outer sheath (13); the side surface of the delivering locator (16) is provided with a lateral arm (10) provided with a liquid outlet (11) and the middle part and the lower part thereof is respectively provided with a positioning detent (14) and a guiding detent (15). The water injection well layering static pressure composite instrument is characterized by being capable of measuring flow and pressure simultaneously, eliminates the influence of testing tools on information explanation and provides correct stratum parameters for geological development.
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Description

Technical field:

[0001] The invention relates to a tool for layered pressure measurement of water injection wells in an oil field, in particular to a combined instrument for layered static pressure of water injection wells. Background technique:

[0002] Layered pressure measurement of water injection wells in oilfields is an important task in the oilfield development process. It can describe the formations around water injection wells in detail, judge the formation connectivity between wells, understand the pressure relief ability of oil layers, and verify the logging results of injection profiles, etc. The test tools for layered pressure measurement of water injection wells directly affect the measurement results of layered static pressure. The test of layered pressure measurement for water injection wells generally includes plugging pressure gauges and pressure measurements through the center channel of ordinary pipe strings. For the plugged pressure gauge, its incompatib...

Claims

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