A loading system for drilling high pressure water test

A loading system, high-pressure water-pressing technology, applied in earth-moving drilling, measurement, wellbore/well components, etc., can solve problems such as high water pressure and unsafety, and achieve the effect of small pipeline head loss and reduced process flow.

Active Publication Date: 2016-07-06
POWERCHINA ZHONGNAN ENG
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Problems solved by technology

[0003] In order to overcome the high water pressure measured by the existing hole high-pressure water test loading system and the lack of safety, the present invention aims to provide a drilling high-pressure water test loading system, which can make the pressure of the pressure sensor test The value is closer to the actual pressure of the test chamber, providing accurate data for the water pressure test of the test chamber in the high-pressure water test of the underground engineering drilling in the fields of water conservancy and hydropower projects, petroleum and nuclear waste reserves, etc.

Method used

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  • A loading system for drilling high pressure water test

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Embodiment Construction

[0020] A drilling high-pressure water test loading system, such as figure 1 As shown, in the test site area, the test observation hole is constructed according to the specification requirements, the test chamber 3 is sealed off by the water stop plug 2, and the high-pressure water pump group 5 is arranged at the same time. The water in the reservoir 11 sends high-pressure water flow to the lower part of the test chamber 3 through the high-pressure water pump group 5 through the water inlet pipe 4. At the same time, a return pipe 6 is set on the upper part of the test chamber 3 to control the excess water in the test chamber 3 after the pressure is adjusted by the pressure regulating ball valve 10. Carry out recycling; Install the first flow recorder and the second flow recorder at 6 places of the water pipe next to the reservoir and the return pipe respectively, and install a water pressure gauge 9 on the return pipe to measure the water pressure of the test chamber.

[0021] ...

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Abstract

The invention discloses a loading system for drilling high pressure water pressure test. The loading system includes a test chamber and a water reservoir located in the test observation hole; the test chamber and the water reservoir are connected through a water inlet pipe, and a high-pressure water pump group is housed on the water inlet pipe; the connection between the test chamber and the high-pressure water pump group A water return pipe is connected between the water inlet ends, and a pressure gauge is installed on the water return pipe. The invention improves the pipeline connection mode of the drilling high-pressure water test loading system, adds a return water pipe, and forms a double pipeline connection mode with the water inlet pipe. Adjust the pressure at the return pipe to control the water pressure value of the test chamber. When the pressure sensor is connected to test the water pressure of the test chamber, it will not be affected by the flow state of the water inlet pipe, and the loss of the water head in the pipeline is small; It is relatively safe for the drilling high-pressure water test of the design pressure value.

Description

technical field [0001] The invention relates to a drilling high-pressure water pressure test loading system, which is suitable for the loading device of the rock mass in-situ high-pressure water pressure test system for underground projects in the fields of water conservancy and hydropower projects, petroleum and nuclear waste storage, and the like. Background technique [0002] The existing drilling high-pressure water test loading system is generally connected by a single pipeline. Although the single-pipe connection method is accurate and convenient for flow testing, there is a pressure difference between the data measured by the pressure sensor and the actual pressure of the test chamber. When considering the head loss of the pipeline caused by the flow state change of the inlet pipe, the pressure difference between the two is even greater. In particular, the actual pressure of the test chamber is less than the test value, and it is difficult to accurately calculate how ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E21B47/06
Inventor 冯树荣赵海斌翦波陈建胜钟辉亚左成荣于新华王丽新
Owner POWERCHINA ZHONGNAN ENG
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