Method and device for measuring water content in crude oil based on thermal diffusion
A technology of thermal diffusion and water content, which is applied in the field of petroleum industry, can solve the problems of relatively expensive price, and achieve the effect of simple and practical device, low cost and convenient use
Inactive Publication Date: 2011-12-07
PETROCHINA CO LTD
View PDF6 Cites 3 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
The current disadvantage is that the price is relatively expensive, and there are problems such as biological protection and radioactive source management.
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0035] see figure 1 According to the above-mentioned technical scheme, the device for measuring the water content of crude oil based on thermal diffusion in this embodiment includes: a sampler 1, a group of six measuring sensors 2 with equal intervals in the vertical direction are arranged in the sampler 1, and each sensor The probe is externally connected with a heating source 3 and a first temperature display device 4 with fixed power and time. The sampler has a built-in Pt thermometer 5, and the Pt thermometer 5 is externally connected to a second temperature display instrument 6.
[0036] Before the measurement starts, a series of oil-water standard composition mixed samples are prepared within the composition range of 0-100%, and each standard composition sample is placed in the sampler 1, and the sample volume submerges all the measurement sensor probes 2. Turn on the Pt thermometer 5 and the second display instrument 6 and the external heating source 3 and the first t...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More PUM
Login to View More Abstract
The invention discloses a method and device for measuring water content of crude oil based on thermal diffusion. According to the measuring method provided by the invention, six measuring sensor probes which are equidistant in the vertical direction is adopted by utilizing the influence of thermal capacity on a fluid thermal diffusion speed according to a characteristic that the specific heat capacity of the crude oil and the specific heat capacity of water have a big difference; each measuring sensor probe is externally connected with a heating source and a temperature display instrument; and the water content in an oil sample is obtained by combining a thermal diffusion quasi-static equation Nu=f(Gr, Pr) with a water content standard curve through measuring the difference between the temperature of measuring sensors and the temperature of the sample body when the diffusion is balanced. The device provided by the invention comprises a sampler and six integrated measuring sensor probes which are equidistantly arrayed in the vertical direction; the measuring sensor probes are externally connected with the heating source and the temperature display instrument; the sampler is internally provided with a Pt (Platinum) thermometer and is externally connected with the temperature display instrument. The method provided by the invention cannot be influenced by the water content range and emulsification condition of oils while measuring the water content of the crude oil.
Description
technical field [0001] The invention belongs to the technical field of petroleum industry, and relates to a crude oil water content measurement method and a device thereof, in particular to a thermal diffusion-based crude oil water content measurement method and a device thereof. Background technique [0002] In the process of crude oil production, it is necessary to know the water content of crude oil at any time to monitor the production of crude oil. At the wellhead, gathering and transportation stations, combined stations, and oil transportation stations, it is necessary to know the water content of crude oil to control the entire production process. Detecting water content is of great significance to oilfield production. [0003] At present, according to the classification method of measurement principle, domestic and foreign crude oil water content analyzers are divided into the following categories: [0004] 1. Water-containing analyzer for electrical characteristics...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More Application Information
Patent Timeline
Login to View More IPC IPC(8): G01N25/20
Inventor 冉新权刘海浪黄远
Owner PETROCHINA CO LTD