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Device and method for splitting yield of multi-layer commingled production well

A multi-layer combined production and production technology, which is applied in the directions of measurement, earthwork drilling and production, wellbore/well components, etc., can solve the problem of inaccurate splitting of oil well production

Inactive Publication Date: 2021-03-26
SOUTHWEST PETROLEUM UNIV
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  • Description
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  • Application Information

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Problems solved by technology

[0004] The present invention proposes a device and method for splitting production of multi-layer oil wells, which can solve the problem of inaccurate production splitting of oil wells

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  • Device and method for splitting yield of multi-layer commingled production well
  • Device and method for splitting yield of multi-layer commingled production well
  • Device and method for splitting yield of multi-layer commingled production well

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Embodiment Construction

[0027] The present invention will be further described below in conjunction with the embodiments and the accompanying drawings.

[0028] The invention provides a device and method for splitting production of multi-layer oil wells, figure 1 It is a structural schematic diagram of the present invention, figure 2 It is a structural schematic diagram of the measuring instrument in the present invention. This device can not only accurately split the production capacity of the oil reservoir, but also monitor the production of each small layer in real time. The specific implementation method includes the following steps:

[0029] First, prepare the static parameters of the reservoir, including the relative density of crude oil, the relative density of dissolved gas, and the solubility of natural gas in crude oil;

[0030] Second, determine the position of the sand control sliding sleeve in each small layer of the multi-layer combined production well, and lower the measuring instru...

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Abstract

The invention discloses a device and method for splitting yield of a multi-layer commingled production well, and relates to the technical field of oil and gas field development. The device comprises aground controller and a measuring instrument connected through a cable and arranged in an oil pipe, and two symmetrical centralizers are arranged outside the measuring instrument. A signal transceiving device, a host, a pressure sensor, a temperature sensor, a sound wave transmitting device and a sound wave receiving device are arranged in the measuring instrument, the measuring instrument is controlled to work through a ground controller, the measuring instrument measures the sound wave frequency, temperature and pressure of each small layer, and therefore the splitting coefficient of each small layer of the multi-layer commingled production well is calculated. Aiming at the problem that the output splitting of the existing multilayer commingled production well is not accurate enough, the output splitting coefficient of each small layer can be obtained in real time, so that the production condition of each small layer of the oil reservoir is known, and the method is convenient and practical.

Description

technical field [0001] The invention relates to the technical field of oil and gas field development, in particular to a device and method for splitting production of multi-layer combined production oil wells. Background technique [0002] In the field of oil and gas field development technology, the development method of multi-layer combined production is becoming more and more common. Among them, the precise splitting of the production of each small layer is an important basis for the fine description of the reservoir and the adjustment of the later development plan. However, at present, stratum factors are mainly considered for the production splitting of each small layer of multi-layer co-production wells, and the error of the calculated results is often relatively large. Therefore, it is imminent to find a method or device for accurately splitting the output of small layers. [0003] Conventional sublayer yield splitting methods mainly include effective thickness metho...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21B47/00E21B47/06E21B47/07E21B47/12
CPCE21B47/00E21B47/06E21B47/12
Inventor 谭晓华丁磊毛正林李劲涵邓永建崔苗逢彭港珍
Owner SOUTHWEST PETROLEUM UNIV
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