Multi-parameter energy-saving control method for watering pipe network of oil field

A technology of energy-saving control and water pipe network, which is applied in the direction of electrical program control, program control in sequence/logic controller, earthwork drilling and mining, etc., and can solve problems such as difficulty in meeting on-site production requirements

Inactive Publication Date: 2010-07-28
DAQING GASOLINEEUM INST
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Problems solved by technology

[0003] In order to solve the problem that the existing crude oil mixed with water transportation method has been difficult to meet the requirements of on-site production, the present invention provides a multi-parameter energy-saving control method for oilfield water-mixed pipeline network. After the method is implemented, it can realize the Multi-parameter, high-efficiency and high-precision control, with the characteristics of high heat utilization efficiency, energy saving, timely and rapid adjustment actions, etc.

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  • Multi-parameter energy-saving control method for watering pipe network of oil field

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Embodiment Construction

[0024] The present invention will be further described below in conjunction with accompanying drawing:

[0025] The multi-parameter energy-saving control method of oilfield water-mixed pipe network described in the present invention, its principle is as follows figure 1 As shown, the method is controlled by a control system composed of a programmable logic controller, and this control system is called for short the PLC control system. The method is composed of the following steps:

[0026] ①In the oilfield water-mixed pipeline network such as figure 1 As shown, install corresponding measuring instruments capable of outputting digital signals to obtain the following transient variables, that is, the pressure P of the oil-water mixture before the water mixing point 1 , temperature T 1 , flow q 1 and moisture content h 1 , the pressure P of the hot water in the water pipe 2 , temperature T 2 , and the local soil temperature T 0 , the transient variables obtained by the abo...

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Abstract

The invention relates to a multi-parameter energy-saving control method for a watering pipe network of an oil field, which mainly solves the problem that the existing crude oil watering transportation method is difficult to meet the on-site production requirement. The method is characterized in that a PLC control system acquires data sent from an instrument arranged on the on-site pipe network; the data is substituted to a physical equation to calculate a specific heat capacity C of the oil water mixture before the watering point and a specific heat capacity C of the hot water in a water inlet pipeline; the obtained known parameters into an energy balance equation set to calculate a flow rate q2 of the hot water in a required watering pipeline; and the PLC control system outputs a control signal according to the obtained flow rate q2 of the hot water to control an electric control valve to be adjusted to the corresponding opening.

Description

Technical field: [0001] The invention relates to a method for energy-saving control of a water-mixed pipe network in an oil field, in particular to a method for regulating and controlling multi-parameter flow of a water-mixed pipe network in an oil field by using a PLC automatic control system. Background technique: [0002] In winter, in order to prevent pipeline freezing and blockage and ensure that the valve groups in the water-mixed pipeline network in the oil field can safely transport crude oil to the next-level station, it is necessary to increase the temperature of the oil-water mixture transported in the pipeline. At present, the widely used method is to use a valve welded on the side wall of the oil pipeline and connected to the high-temperature water pipeline to manually mix water in the valve group. When mixing water, manually adjust the opening of the valve according to the need. However, after a period of application, it is found that there are the following pr...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21B43/20E21B43/24G05B19/05
Inventor 吴国忠齐晗兵李栋吕妍
Owner DAQING GASOLINEEUM INST
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