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Multi-sampling device for formation testing

A sampling device and formation testing technology, which is applied to wellbore/well components, earth-moving drilling, etc., can solve the problems of reducing sampling efficiency and increasing the cost of sampling operation, and achieve the effect of easy operation, convenient sampling operation and simple structure

Active Publication Date: 2013-01-30
CHINA NAT OFFSHORE OIL CORP +1
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

This makes sampling much less efficient, which actually increases the cost of the sampling operation

Method used

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  • Multi-sampling device for formation testing
  • Multi-sampling device for formation testing
  • Multi-sampling device for formation testing

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Embodiment Construction

[0018] Such as Figure 1-Figure 3 As shown, the present invention includes a multi-sampling control module 1 and a multi-sampling cylinder module 2 . The multi-sampling control module 1 is used for controlling the multi-sampling cylinder module 2, and the multi-sampling cylinder module 2 is used for sampling the formation fluid.

[0019] The outside of the multi-sampling control module 1 is a cylindrical casing 11 , which can be detachably installed for easy maintenance of the multi-sampling control module 1 . An address identification unit 12 and a multi-way valve control unit 13 are arranged in the housing 11 . Wherein, the address identifying unit 12 is used to identify the address, and send the identified address information to the multi-way valve control unit 13 .

[0020] After receiving the identified address information, the multi-way valve control unit 13 sends a control command to the solenoid valve of the corresponding sampling cylinder 211 according to the addres...

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Abstract

The invention provides a multi-sampling device for formation testing, which comprises a multi-sampling control module and a multi-sampling cylinder module. The multi-sampling control module comprises an address identification unit and a multi-way valve control unit arranged in a shell, wherein the address identification unit is used for identifying an address and transmitting address information to the multi-way valve control unit, the multi-way valve control unit is used for transmitting a control command to the solenoid valve of a sampling cylinder, and a pressure-bearing toggle switch which is used for setting the address information of the address identification unit is also arranged on the surface of the shell; and the multi-sampling cylinder module is arranged on one end of the multi-sampling control module in a connecting manner and comprises more than one sampling cylinder group, each sampling cylinder group comprises more than two sampling cylinders which are uniformly arranged in the radial direction along the axis line, and switches of the sampling cylinders are controlled by the multi-way valve control unit. Since the multi-sampling control module and the multi-sampling cylinder module are used, the multi-sampling control module adopts the address identification mode, and the sampling cylinders in the multi-sampling cylinder module are combined in groups, the invention realizes the purpose that multiple sampling cylinders are used for sampling operation at a time, thereby greatly improving the sampling efficiency.

Description

technical field [0001] The invention relates to a multi-sampling device for formation testing. Background technique [0002] Performing PVT analysis on the obtained single-phase formation fluid on the ground can obtain rich formation fluid data and describe the reservoir fluid and its characteristics more comprehensively, which is very important for oilfield exploration and development. Therefore, there is a strong demand for obtaining as many single-phase formation fluid samples as possible in one trip in the formation testing operation. However, due to the cumbersome connection setting of the sampling cylinder and the complicated connection control, the number of single-phase formation fluid sampling cylinders that can be carried by the formation tester is very small. At present, the only domestically produced ERCT formation tester that can take single-phase formation fluid samples can carry up to 4 single-phase formation sample cylinders (distributed in two sub-sections,...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E21B49/08
Inventor 尤国平冯永仁庞希顺沈阳
Owner CHINA NAT OFFSHORE OIL CORP
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