Method and device for optimizing oil well wax removal system
An optimization method and wax removal technology, which can be used in earth-moving drilling, cleaning equipment, wellbore/well components, etc., and can solve the problems of inability to meet the requirements of fine management of oil wells, large differences in crude oil physical properties, and untargeted wax removal systems.
Active Publication Date: 2019-12-20
PETROCHINA CO LTD +1
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Problems solved by technology
[0003] In view of this, the present invention provides a method and device for optimizing the wax removal system of oil wells to solve the problem that with the extension of oil field development time and the continuous production of new oil fields, the physical properties of crude oil vary greatly, the proportion of low-production liquid wells increases, and the wax removal system is targeted. Not strong enough to meet the needs of fine management of oil wells
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[0041] The present invention will be described below based on examples, but it should be noted that the present invention is not limited to these examples. In the following detailed description of the invention, some specific details are set forth in detail. However, the present invention can be fully understood by those skilled in the art about the parts that are not described in detail.
[0042] In addition, those of ordinary skill in the art should understand that the provided drawings are only for illustrating the objects, features and advantages of the present invention, and the drawings are not actually drawn to scale.
[0043] At the same time, unless the context clearly requires, the words "include", "include" and other similar words in the entire specification and claims should be interpreted as an inclusive meaning rather than an exclusive or exhaustive meaning; that is, "include but not limited to the meaning of ".
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The invention discloses a method for optimizing a paraffin removal system of oil wells and further discloses a device for optimizing the paraffin removal system of the oil wells and dosing control charts for optimizing the paraffin removal system of the oil wells. The method comprises the steps that paraffin precipitation comprehensive evaluation coefficients of physical property parameters related to paraffin precipitation are built; the paraffin precipitation comprehensive evaluation coefficients are graded, an oil field is selected from the graded paraffin precipitation comprehensive evaluation coefficients, and the paraffin precipitation speeds of the oil wells, with the different yields and the different water content levels, of the oil field and the paraffin removal speed of paraffinremovers are measured; the paraffin removal periods of the different oil wells of the oil field are calculated according to the paraffin precipitation speeds and with the situation that the paraffinprecipitation thickness of each oil pipe reaches a value which cannot meet the production requirement as a critical point; and the paraffin removal speed and the required using amount of the paraffinremovers of the oil wells, with the different yields, of the oil field are obtained. The problems that as the oil field development time is prolonged and new oil fields are put into production continuously, the physical properties of crude oil have great difference, the proportion of wells with the low liquid yield is increased, the pertinence of the paraffin removal system is poor, and the requirement of fine management of the oil wells cannot be met are solved.
Description
technical field [0001] The invention relates to the field of petroleum exploitation, in particular to a method and device for optimizing an oil well wax removal system, which realizes the purpose of individualized dosing of oil wells. Background technique [0002] Regular addition of wax remover to oil wells is an important daily management measure to reduce the load of pumping units, save energy and reduce consumption, and extend the maintenance-free period of oil wells. Generally, the wax removal system in oil fields is given through on-site exploration, and only two factors, production and water content, are considered. The range of interval division is wide. With the extension of oilfield development time and continuous production of new oilfields, the physical properties of crude oil vary greatly, the proportion of low-production liquid wells increases, and the wax removal system is not targeted enough to meet the needs of fine management of oil wells. Contents of the ...
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IPC IPC(8): E21B37/06
CPCE21B37/06
Inventor 张传绪孙成岩苗国晶肖辉魏伟朱金丹李雪
Owner PETROCHINA CO LTD