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Automatic hydrate preventing device for deep water gas well test and preventing method

A technology using hydrate and measuring devices, which is applied in the directions of measurement, earthwork drilling, wellbore/well components, etc. It can solve the problems of hydrate prevention failure, manual reading error, low accuracy, etc., and achieve no manual operation delay, Reliable and responsive effect of device engineering

Active Publication Date: 2015-05-27
CHINA UNIV OF PETROLEUM (EAST CHINA)
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Problems solved by technology

On the one hand, this method has errors in manual readings, and on the other hand, there are differences between the simulation conditions of the existing charts and the actual conditions on site, resulting in low accuracy and delays in operation, resulting in the failure of hydrate prevention and control, and the occurrence of hydrates in the test. accidents happen from time to time

Method used

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  • Automatic hydrate preventing device for deep water gas well test and preventing method
  • Automatic hydrate preventing device for deep water gas well test and preventing method
  • Automatic hydrate preventing device for deep water gas well test and preventing method

Examples

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Embodiment Construction

[0020] The present invention will be further described below in conjunction with the accompanying drawings.

[0021] Such as figure 1 As shown, the deep-water gas well test downhole and surface devices include: test string 101, flow head 102, first surface flow pipeline 103a, second surface flow pipeline 103b, fixed nozzle 104, adjustable nozzle 105, gas-liquid two-phase Separator 106, liquid flow pipeline 107, liquid storage tank 108, gas flow pipeline 109 and combustion arm 110; flow head 102, as an intermediate device, is located at the top of the test column 101 and is connected with the test column 101 by threads;

[0022] Between the first surface flow pipeline 103a and the second surface flow pipeline 103b is a throttling manifold composed of a fixed nozzle 104 and an adjustable nozzle 105 connected in parallel; one end of the first surface flow pipeline 103a is connected to the flow head 102 through a union, The other end is connected to one end of the throttling mani...

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Abstract

The invention belongs to the field of petroleum engineering, and particularly relates to an automatic hydrate preventing device for a deep water gas well test and a preventing method. The automatic hydrate preventing device for the deep water gas well test comprises an automatic data monitoring, acquisition and processing system and an automatic inhibitor control injection system, wherein the automatic data monitoring, acquisition and processing system lays the foundation for judgment of hydrate generation and correction by monitoring parameters of temperature, pressure, liquid flow, gas flow, liquid mineralization degree and gas component in real time; acquired data are processed, and a hydrate judgment result and an inhibitor adjusting result are given; and the automatic inhibitor control injection system rapidly sends a control signal according to the processing result of an upper computer, an executing mechanism is used for performing execution, the working parameters of an inhibitor injection pump are adjusted, and inhibitor injection is adjusted. According to the method and the device, the test condition can be automatically monitored in real time in the whole journey, the hydrate inhibitor injection speed is automatically controlled, and the automatic prevention purpose of hydrate is achieved.

Description

technical field [0001] The invention belongs to the field of petroleum engineering, and in particular relates to an automatic hydrate prevention and control device and method for deep-water gas well testing. Background technique [0002] my country's oil demand continues to rise, and most onshore and shallow-water oil fields have entered the middle and late stages of development. The deep-water oil and gas resources in the South China Sea have become one of the most potential oil and gas resource replacement areas in China. Deepwater oil and gas well testing is a necessary method for oil and gas reservoir evaluation in the exploration and development of deepwater oil and gas resources, and plays a prominent role in deepwater oil and gas drilling and completion. [0003] The deep water environment is harsh, especially the low temperature environment caused by the water depth brings many challenges to the test operation. Flow safety guarantee is the prerequisite for the smoot...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E21B47/00
Inventor 王志远孙宝江张振楠关利军李建周
Owner CHINA UNIV OF PETROLEUM (EAST CHINA)
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