Oil well pump supply and discharge relation change trend alarm method
A change trend, oil pump technology, applied in the direction of alarms, components of pumping devices for elastic fluids, pump components, etc., can solve the problem of inability to dynamically grasp the changing trend of the supply and discharge relationship of oil pumps, and inability to quantify the oil pump. Supply-discharge relationship and other issues
Pending Publication Date: 2021-02-12
PETROCHINA CO LTD
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Problems solved by technology
[0003] In the process of realizing the present application, the inventor found that the relevant technology has at least the following problems: the staff can only analyze the change of the shape of a single dynamometer diagram, but cannot quantify the relationship between the supply and discharge of the oil well pump, and cannot Dynamically grasp the changing trend of the supply and discharge relationship of oil well pumps
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[0057] In order to make the technical solutions and advantages of the present invention clearer, the implementation manners of the present application will be further described in detail below in conjunction with the accompanying drawings.
[0058] The embodiment of the present application provides an alarm method for the changing trend of the oil well pump supply and discharge relationship,
[0059] figure 1A schematic diagram of the implementation environment of the alarm method for the changing trend of the oil pump supply and discharge relationship provided by the embodiment of the present application; figure 2 A flow chart of the alarm method for the changing trend of the supply and discharge relationship of the oil well pump provided in the embodiment of the present application; image 3 The dynamometer diagram of one supply and discharge cycle of the oil well pump provided in the embodiment of the present application; Figure 4 A schematic diagram of the plunger of t...
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The invention relates to the technical field of oilfield development, and provides an alarm method for the change trend of the supply and discharge relation of an oil well pump. The method comprises the steps that an dynamometer obtains the load of a polish rod of a target oil well pump and the displacement of a plunger every other reference duration, and an indicator diagram is drawn; the dynamometer determines feature points in the indicator diagram and transmits coordinate positions of the feature points to an upper computer; the upper computer calculates the liquid supply insufficiency degree of the target oil well pump according to the coordinate positions of the feature points; the upper computer obtains a liquid supply insufficiency change trend operation line of the target oil wellpump according to the liquid supply insufficiency degree; the upper computer compares the liquid supply insufficiency degree and the liquid supply insufficiency change trend operation line with the first warning line and the second warning line respectively, and when the liquid supply insufficiency degree exceeds the first warning line and / or the liquid supply insufficiency change trend operationline is lower than the second warning line, the upper computer is triggered to give an alarm. The method can analyze the liquid supply insufficiency degree and change trend of the big data oil well pump and give an alarm.
Description
technical field [0001] The invention relates to the technical field of oil field development, in particular to an alarm method for the changing trend of the supply and discharge relationship of an oil well pump. Background technique [0002] In the process of oil field development, it is necessary to diagnose the liquid supply capacity of the oil pump of the oil well according to the supply and discharge relationship of the oil pump of the oil pump. At present, the staff judges the supply and discharge relationship of the oil well pump by analyzing the shape change of a single dynamometer diagram, and then diagnoses the liquid supply capacity of the oil well pump. [0003] In the process of realizing the present application, the inventor found that the relevant technology has at least the following problems: the staff can only analyze the change of the shape of a single dynamometer diagram, but cannot quantify the relationship between the supply and discharge of the oil well...
Claims
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IPC IPC(8): E21B47/00E21B43/12F04B51/00F04B53/00G08B3/00G08B21/24
CPCE21B47/00E21B43/121F04B51/00F04B53/00G08B3/00G08B21/24
Inventor 杜宏伟薛良玉闫俊付国庆宋明垚唐光亮周涛申利毛洋邓毅
Owner PETROCHINA CO LTD