Gas-liquid separation low-production fluid three-phase flow measuring method
A technology of gas-liquid separation and measurement method, which is applied in the direction of measurement, mining fluid, earthwork drilling and mining, etc., which can solve the problems of inaccurate measurement results and achieve accurate measurement results
Inactive Publication Date: 2012-10-31
PETROCHINA CO LTD +1
View PDF6 Cites 14 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
[0003] In order to overcome the inaccurate measurement results of the existing three-phase flow of oil, gas and water in low-production liquid wells, the present invention provides a gas-liquid separation type low-production liquid three-phase flow measurement method, which has significant impact on physical properties through gas-liquid separation. The different gas phase and liquid phase are measured separately, and according to the relationship between the parameters of the measurement process, the accurate flow rate of each phase of oil, gas and water can be obtained
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
[0067] Example: A Φ28mm low-production liquid three-phase flow logging tool is used for measurement. The instrument has an outer diameter of 28mm, a length of 2000mm, a temperature resistance of 125°C, a pressure resistance of 40MPm, a gas phase flow measurement range of 0.5-8m3 / d, and a measurement resolution of 0.5m3 / d, the measurement accuracy is 5%. Oil phase flow measurement range: 0.2--8m3 / d, flow measurement accuracy: 3%, liquid phase flow measurement range: 5--80m3 / d, Figure 4 is the curve of gas phase flow measurement experiment results, and the curve has a good monotonic relationship; Figure 5 is the experimental result curve of oil phase flow measurement; Image 6 It is the water flow curve measured by the multi-probe water content meter at different flow rates of the oil phase.
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 relates to a gas-liquid separation low-production fluid three-phase flow measuring method, which mainly solves the problem that the existing low-production fluid well oil, gas and water three-phase flow quantity measuring has inaccurate measuring result, and is characterized by including the following steps: a) carrying out gas-liquid separation through a three-phase flow logger; b) adopting a ultrasonic flowmeter to measure the gas phase flow quantity Qg flown out from a gas phase flow channel; c) measuring the oil phase flow quantity Qo; d) measuring the water phase flow quantity Qw; and e) correcting the gas phase PVT. The method separately measures the gas phase and the liquid phase with distinguished physical property difference, and accurately obtains the accurate oil, gas and water phase quantities according to the relationship between the parameters during the measuring process.
Description
technical field [0001] The invention relates to the field of oil field production logging, in particular to a gas-liquid separation type low-production liquid three-phase flow measurement method. Background technique [0002] The oil wells in the three types of oil reservoirs in China are all low-yield oil wells. The liquid production of a single well is generally between 1-5m3 / d, the water content is about 50% or lower, and it is generally accompanied by degassing. Therefore, oil, gas, and Water phases coexist, and another feature of low-production wells is that the liquid production of each phase is unstable, or even intermittent. Therefore, the liquid production often does not reach the start-up flow rate of the turbine flowmeter used to measure the liquid production. And the measurement results are inaccurate; moreover, the production fluid of this type of well is often accompanied by sand production, and the flowmeter with rotating parts represented by the turbine flowm...
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): E21B47/00E21B43/34
Inventor 庄海军马水龙周家强刘慧东袁智惠贲亮吴恩明
Owner PETROCHINA CO LTD