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Testing device and testing method of injection profile used for highly-deviated water injection well

A test device and technology for water injection wells, which are applied in the field of petroleum industry, can solve problems such as uncontrollable running speed of instrument strings and obstacles in running, and achieve the effects of wide application range, increased reliability, and convenient use

Inactive Publication Date: 2017-12-26
CHINA NAT OFFSHORE OIL CORP +1
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in this transportation method, the speed of the instrument string running is uncontrollable, which may easily cause operational risks such as running into obstacles

Method used

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  • Testing device and testing method of injection profile used for highly-deviated water injection well
  • Testing device and testing method of injection profile used for highly-deviated water injection well

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Embodiment Construction

[0026] The present invention will be further described below in conjunction with the accompanying drawings.

[0027] as attached figure 1 and figure 2 As shown, an injection profile testing device for high-inclination water injection wells includes a ground controller 1 arranged on the ground and a multi-parameter testing instrument string 7 lowered into the well, the ground controller 1 and the multi-parameter The test instrument strings 7 are connected to each other through the armored cables 6, and the cable retractor 2 is arranged on the armored cables 6. The ground controller 1 can control the propulsion speed of the electric turbine propeller 8 in real time through the armored cable 6 and read parameters such as downhole water injection volume, temperature and water absorption profile. The multi-parameter test instrument string 7 includes a cable head 7-1, a weight bar 7-2 and a test instrument 7-3 from top to bottom. In this embodiment, the test instrument 7-3 can ad...

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Abstract

The invention discloses a testing device of an injection profile used for a highly-deviated water injection well. The device comprises a ground controller arranged on the ground and a multiparameter testing tool string run into the downhole, the ground controller and the multiparameter testing tool string are connected with each other through an armored cable, and the lower portion of the multiparameter testing tool string is connected to an electric turbine propeller used for dragging the multiparameter testing tool string to target layers. A testing method of the injection profile used for the highly-deviated water injection well is further disclosed, wherein the multiparameter testing tool string and the electric turbine propeller are run into the well; in a straight segment of the well, the multiparameter testing tool string runs in the well relying on the weights of the multiparameter testing tool string and a weight bar; in a segment of the well with high well deviation, the electric turbine propeller is used for dragging the multiparameter testing tool string to the target layers, and the multiparameter testing tool string is started for measuring the temperature, the flow and pressure parameters of the water injection layers. According to the testing device and the testing method, the electric turbine propeller is used for running the testing tool string into the well, the principle is simple, the effect is reliable, and the testing device and method can be widely applied to an injection profile testing process of the highly-deviated water injection well.

Description

technical field [0001] The invention relates to the testing of water injection wells in the field of petroleum industry, in particular to an injection profile testing device and testing method for highly inclined water injection wells. Background technique [0002] Injection profile testing technology of water injection wells is an effective means to determine the injection profile, check the layered injection effect, and reveal the contradiction between layers. The conventional testing method needs to run the testing instrument downhole through the cable. When the well deviation is greater than 60°, the cable running method is not feasible. At present, the common delivery methods of testing instruments include ordinary tubing running, coiled tubing running, hydraulic running, crawler running, etc. Each running method has its advantages and limitations, and it is necessary to adopt a suitable running method for different well conditions. Among them, the existing hydraulic ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21B49/00
CPCE21B49/008
Inventor 王良杰刘常清张磊孙海涛张宁姜晓君牛贵锋
Owner CHINA NAT OFFSHORE OIL CORP
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