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Method and apparatus for monitoring of esp

An equipment and pumping technology, used in the oil transportation industry and monitoring ESP field, can solve the problems of complex equipment and achieve the effect of preventing damage

Inactive Publication Date: 2012-01-11
SIEMENS AG
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0011] The equipment according to the aforementioned instructions or technical books is rather complex

Method used

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  • Method and apparatus for monitoring of esp
  • Method and apparatus for monitoring of esp
  • Method and apparatus for monitoring of esp

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Embodiment Construction

[0026] exist figure 1 In , the borehole is shown in section and labeled with reference numeral 1 . The borehole 1 has a depth of several kilometers, eg 3000m from the surface, and has a diameter of eg 4" (inches). The borehole 1 leads from an oil reservoir (not shown) to the surface and is relatively narrow in length. Borehole 1 can also be located underwater, from the seabed to the reservoir. The fluid that is conveyed from the reservoir to the surface is usually a mixture of oil, gas and water. In figure 1 In , reference numeral 1 denotes a multiphase mixed flow.

[0027] In the borehole 1 a so-called ESP 11 (Electric Submersible Pump) is installed. The ESP 11 can have several pump sections 10 for pumping well fluids of the well to the surface. Additionally, the ESP has a pump inlet 13 and can include a gas separator.

[0028] The ESP 11 has a motor section with an electric motor 14 . The motor 14 of the ESP 11 has a motor protection device 15 . Such motor protection d...

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Abstract

In a method for monitoring ESP with a pump for pumping oil, gas, water or other fluid media, which pump is driven by an electrical motor, there are used acoustical phenomena of the motor and / or the pump as state variable for pumping the media, the acoustic phenomena are measured as electrical signals and the electrical signals are discriminated in respect to the pumped media. In the corresponding apparatus for monitoring of ESP, with pump section(s) (10) for pumping a mixture of oil, gas and water, which is driven by a motor section(s) (14), whereby at least one acoustic sensor (21) is placed near the ESP (11).

Description

technical field [0001] The present invention relates to methods of monitoring ESP. Furthermore the invention relates to suitable and low-cost equipment for carrying out the method. The invention relates to the oil transportation industry. Background technique [0002] Oil is pumped from underground reservoirs in the onshore industry and from underwater in the offshore industry. In most cases there is a multiphase flow of oil and gas and finally water. Therefore, an Electric Submersible Pump (ESP) is required. [0003] It is important for the safety monitoring of ESP. Such a monitoring system must detect the gas content in the well fluid stream to shut down the pump to prevent damage to the pump if the gas content in the well fluid becomes too high. [0004] Downhole monitoring systems are available. The following publications and patent documents are the technical basis of the present invention. [0005] In view of the "Boletin Quincenial" of August 31, 1997, multipha...

Claims

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Application Information

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IPC IPC(8): E21B43/12F04D15/00E21B47/00
CPCE21B47/0007E21B43/128F04D15/0088F04D31/00E21B47/008
Inventor A.M.巴特内夫V.K.达诺夫B.格罗莫尔S.A.波里科夫E.M.斯维里多夫
Owner SIEMENS AG
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