Intelligent online tester for moisture content of crude oil

Abstract

The utility model discloses an intelligent crude oil moisture content on-line tester which comprises a tester box body, an oil inlet pipeline is arranged on one side of the tester box body, and an oil outlet pipeline is arranged on the other side of the tester box body; a water content detection mechanism is arranged between the oil inlet pipeline and the oil outlet pipeline; by means of the oil inlet pipeline, crude oil in the main pipeline can be conveniently sampled into the equipment for water content measurement, measurement errors caused by flow velocity and pressure changes and the like in the pipeline are avoided, and therefore the measurement accuracy is improved; meanwhile, the crude oil is sent back to the crude oil main pipeline through the oil outlet pipeline after detection; the moisture content measurement is high in accuracy: the moisture content measurement adopts field calibration, and the instrument can be corrected according to different working conditions; errors caused by working condition changes in primary calibration are avoided. The test precision is improved; and a 485 communication interface is reserved, so that a client can conveniently transmit data such as the equipment operation state and the water content to an upper computer, and the functions of data analysis, report printing and the like are realized.

Description

Technical Field

[0001] The utility model relates to crude oil water content detection, in particular to an intelligent crude oil water content online tester. Background Art

[0002] Most of my country's oil fields have entered the high water content exploitation stage. The difficulty of exploitation has increased and the output has been decreasing year by year. The water content of crude oil is an important data for crude oil production, storage and transportation, and is also an important parameter indicator for studying the development status of oil fields. The water content of crude oil information can be used to predict many important oil well information, such as estimating the crude oil production of a single well and predicting the development life of an oil well.

[0003] At present, the most widely used measurement methods in my country are chemical method and electrical property method. Since the water content in oil is detected directly with water analysis probe, due to the stratification of oil and water, different liquid level heights, the existence of oil-in-water and water-in-oil, oil agglomeration at low temperatures and other factors, the measurement is inaccurate, the error is large, and even effective measurement cannot be performed. How to effectively solve the above problems is an important direction for the development of crude oil water content detection. Utility Model Content

[0004] The utility model aims to solve the shortcomings of the prior art and proposes an intelligent online tester for the water content of crude oil, which comprises a tester housing, one side of which is provided with an oil inlet pipeline, and the other side of which is provided with an oil outlet pipeline; and a water detection mechanism for measuring the water content of crude oil is provided between the oil inlet pipeline and the oil outlet pipeline.

[0005] Preferably, the oil inlet pipeline is connected to the crude oil main line; the oil outlet pipeline is connected to the crude oil main line

[0006] Preferably, the water detection mechanism includes a liquid inlet tank, the liquid outlet end of the liquid inlet tank is connected to a primary condenser; one side of the primary condenser is connected to a reflux pipe, the top of the reflux pipe is provided with a mounting port, a connecting pipe is installed on the mounting port, the connecting pipe is connected to a secondary condenser at one end away from the reflux pipe, and the secondary condenser is provided with a crude oil outlet, which is connected to the oil outlet pipeline.

[0007] Preferably, a No. 1 distillation flask is provided at the bottom of the primary condenser;

[0008] Preferably, a No. 2 distillation flask is provided at the bottom of the reflux pipe;

[0009] Preferably, a No. 3 distillation flask is provided at the bottom of the secondary condenser;

[0010] Preferably, the No. 1 distillation flask, the No. 2 distillation flask, and the No. 3 distillation flask are all provided with steam outlets.

[0011] Preferably, a central processing unit is arranged inside the measuring instrument housing, and the central processing unit is externally connected to a display screen.

[0012] Preferably, a 485 communication interface is provided on the housing of the measuring instrument to facilitate transmission of data such as equipment operating status and moisture content to a host computer.

[0013] Compared with the existing technology, the beneficial effects of the utility model are: the equipment is convenient for sampling crude oil in the main pipeline to measure water content in the equipment through the oil inlet pipeline, avoiding measurement errors caused by changes in flow rate and pressure in the pipeline, thereby improving the accuracy of measurement; at the same time, after detection, it is sent back to the main pipeline of crude oil through the oil outlet pipeline; the water content measurement accuracy is high: the water content measurement adopts on-site calibration, and the instrument can be calibrated according to different working conditions; the error caused by the change of working conditions in one calibration is avoided. The test accuracy is improved; a 485 communication interface is reserved, which is convenient for customers to transmit data such as equipment operation status and water content to the upper computer, and realize data analysis, report printing and other functions on the upper microcomputer. Good corrosion resistance and stable performance: the materials used are all stainless steel with good corrosion resistance; excellent performance components are used, and all sensor components are glue-sealed and cured; long-term temperature cycle test ensures that the instrument can work stably for a long time. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a schematic diagram of the overall structure of an intelligent online tester for water content in crude oil proposed by the utility model;

[0015] Figure 2 This is a structural schematic diagram of an intelligent online tester for water content in crude oil proposed by the utility model;

[0016] Figure 3 This is a schematic diagram of a water content detection mechanism in an intelligent crude oil water content online tester proposed by the utility model. DETAILED DESCRIPTION

[0017] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0018] Referring to the drawings, the present embodiment provides an intelligent online tester for the water content in crude oil, including a tester housing 10, wherein an oil inlet pipeline 11 is provided on one side of the tester housing 10, and an oil outlet pipeline 12 is provided on the other side; and a water detection mechanism is provided between the oil inlet pipeline and the oil outlet pipeline for facilitating the measurement of the water content in crude oil.

[0019] Preferably, the oil inlet pipeline 11 is connected to the crude oil main line 13; the oil outlet pipeline 12 is connected to the crude oil main line 13.

[0020] Preferably, the water content detection mechanism includes a liquid inlet tank 1, the liquid outlet end of the liquid inlet tank 1 is connected to a primary condenser 2; a reflux pipe 3 is connected to one side of the primary condenser 2, a mounting port is provided at the top of the reflux pipe 3, a connecting pipe 8 is installed on the mounting port, the connecting pipe 8 is connected to a secondary condenser 4 at one end away from the reflux pipe 3, and a crude oil outlet D is provided on the secondary condenser 4, and the crude oil outlet D is connected to the oil outlet pipeline 12.

[0021] Furthermore, a No. 1 distillation flask 5 is provided at the bottom of the primary condenser;

[0022] Furthermore, a No. 2 distillation flask 6 is provided at the bottom of the reflux pipe;

[0023] Furthermore, a No. 3 distillation flask 7 is provided at the bottom of the secondary condenser;

[0024] Furthermore, the No. 1 distillation flask 5 , the No. 2 distillation flask 6 , and the No. 3 distillation flask 7 are all provided with steam outlets.

[0025] Furthermore, a central processing unit is disposed inside the measuring instrument housing 10, and the central processing unit is externally connected to a display screen.

[0026] Furthermore, the measuring instrument housing 10 is provided with a 485 communication interface for transmitting data such as the equipment operating status and moisture content to a host computer.

[0027] Working principle: Crude oil enters the water content detection mechanism through the feed tank 1; first passes through the condenser 2 and enters the distillation flask 5. After the first distillation, the crude oil enters the reflux device 3. After the second distillation in the distillation flask 6, the crude oil enters the secondary condenser 4, and preferably flows out through the D port of the secondary condenser;

[0028] In the above embodiments and working principles, the equipment is convenient for sampling crude oil in the main pipeline to measure water content in the equipment through the oil inlet pipeline, avoiding measurement errors caused by changes in flow rate and pressure in the pipeline, thereby improving the accuracy of measurement; at the same time, after detection, it is sent back to the main pipeline of crude oil through the oil outlet pipeline; the water content measurement accuracy is high: the water content measurement adopts on-site calibration, and the instrument can be calibrated according to different working conditions; the error caused by the change of working conditions in one calibration is avoided. Improve the test accuracy; leave a 485 communication interface, convenient for customers to transmit data such as equipment operation status and water content to the upper computer, and realize data analysis, report printing and other functions on the upper microcomputer. Good corrosion resistance and stable performance: the materials used are all stainless steel with good corrosion resistance; use components with excellent performance, and all sensor components are glue-sealed and cured; long-term temperature cycle test ensures that the instrument can work stably for a long time.

[0029] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. An intelligent online tester for water content in crude oil, comprising a tester housing, characterized in that: An oil inlet pipeline is arranged on one side of the measuring instrument housing, and an oil outlet pipeline is arranged on the other side; and a water content detection mechanism for the water content of crude oil is arranged between the oil inlet pipeline and the oil outlet pipeline; The water content detection mechanism comprises a liquid inlet tank, the liquid outlet end of the liquid inlet tank is connected to a primary condenser (2); one side of the primary condenser (2) is connected to a reflux pipe (3), the top of the reflux pipe (3) is provided with a mounting port, a connecting pipe (8) is installed on the mounting port, the end of the connecting pipe away from the reflux pipe (3) is connected to a secondary condenser, and the secondary condenser is provided with a crude oil outlet, which is connected to an oil outlet pipeline.

2. The intelligent online tester for water content in crude oil according to claim 1 is characterized in that: The oil inlet pipeline is communicated with the crude oil main line; the oil outlet pipeline is communicated with the crude oil main line.

3. The intelligent online tester for water content in crude oil according to claim 1, characterized in that: A No. 1 distillation flask is arranged at the bottom of the primary condenser (2); a No. 2 distillation flask is arranged at the bottom of the reflux tube; and a No. 3 distillation flask is arranged at the bottom of the secondary condenser.

4. The intelligent online tester for water content in crude oil according to claim 3 is characterized in that: The No. 1 distillation flask, the No. 2 distillation flask, and the No. 3 distillation flask are all provided with steam outlets.

5. The intelligent online tester for water content in crude oil according to claim 1, characterized in that: A central processing unit is arranged inside the measuring instrument housing, and the central processing unit is externally connected to a display screen.

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