Method for evaluating scaling trend of oil field water

A technology of oilfield water and trend, which is applied in the field of evaluating the scaling trend of oilfield water, can solve the problems of production reduction, inconvenient production operation, scaling shutdown and other problems, and achieve the effect of small error, large economic benefit and simple operation

Inactive Publication Date: 2016-03-16
SHAANXI RES DESIGN INST OF PETROLEUM CHEM IND
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The occurrence of fouling in oilfield pipelines brings great inconvenience to oilfield production operations, resulting in reduced output and failur

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0015] Example 1

[0016] A method of evaluating the tendency of oilfield water to scale, comprising the steps of:

[0017] (1), sample preparation

[0018] (11) Measure 500ml Xingzichuan 3#—the oilfield pipeline water of Hua 307 well, wash with carbon tetrachloride first, obtain sample A after washing with normal hexane again;

[0019] (12) drying the sample A obtained in step (11) in a vacuum oven at 103° C. for 5 hours to obtain a precipitate;

[0020] (13), grind the precipitate obtained in step (12) evenly to obtain powder B, and put powder B in a container and place it in a desiccator to cool and then set aside;

[0021] (2) Perform energy spectrum analysis on the powder B in step (13) through energy Puyi to obtain the composition of the powder B

[0022] The C content in powder B accounts for 2.93%, the O content accounts for 20.51%, the S content accounts for 2.93%, the Ca content accounts for 15.18%, and contains a small amount of Sr and Ba. Therefore, according to...

Example Embodiment

Specific embodiment 2

[0023] Roughly the same as that of specific example 1, the only difference is that the drying temperature in step (12) is 107°C.

Example Embodiment

Specific embodiment 3

[0024] Roughly the same as that of specific example 1, the only difference is that the drying temperature in step (12) is 105°C.

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Abstract

The invention relates to a method for evaluating the scaling trend of oil field water. The method comprises the following steps: (1) preparing a sample; (2) performing energy spectrum analysis on powder B, thereby acquiring the components of the powder B; if the powder B contains Ca, C and O elements, confirming the oil field water having the trend of generating CaCO3 scaling; if the powder B contains Fe and S elements, confirming the oil field water having the trend of generating FeS scaling; if the powder B contains Ca, C, O and S elements, confirming the oil field water having the trend of generating CaCO3 and CaSO4 scaling; and if the powder B contains barium ions and strontium ions, confirming the oil field water having the trend of generating barium and strontium scaling. An analysis method for the scaling trend of the oil field pipeline water, provided by the invention, has the beneficial effects that the method has the advantages of simple operation, quickness and small error, the scaling trend of the oil field pipeline can be accurately forecasted by analyzing the components of crystal substances, the problem of scaling of the oil field pipeline water is solved, and the economic benefit is relatively high.

Description

technical field [0001] The invention relates to a method for evaluating scaling tendency of oilfield water, belonging to the technical field of petroleum detection engineering. Background technique [0002] The problem of water scaling in oilfield pipelines is a major problem that plagues oilfield production operations. During the development of oilfields, the water in oilfield operations passes through the wellbore and wellhead to the surface gathering and transportation system. Due to changes in various factors such as temperature and pressure, deposits and scales are prone to occur. Scaling in oilfield pipelines brings great inconvenience to oilfield production operations, resulting in reduced output and failure to operate normally. Severe fouling may even cause production shutdown, leading to premature scrapping of oil and gas wells and pipeline equipment. Therefore, it is of great practical significance to quickly and accurately predict the scaling trend of oilfield pi...

Claims

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Application Information

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IPC IPC(8): G01N33/18
CPCG01N33/18G01N33/1813
Inventor 任昊李俊华谢元沈燕宾路建萍
Owner SHAANXI RES DESIGN INST OF PETROLEUM CHEM IND
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