Exploitation measuring device and method of coal bed gas well

A measurement device and coalbed methane well technology, which is applied in the directions of measurement, mining fluid, earthwork drilling, etc., can solve the problems of large area, misjudgment of the production status of coalbed methane wells, and increased equipment costs, so as to improve the upper limit of measurement and simplify the ground equipment, cost savings

CN102168548AActive Publication Date: 2011-08-31CHONGQING OPRO ENERGY TECH CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Publication Date
2011-08-31

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Abstract

The invention provides an automatic exploitation measuring device and control method of a coal bed gas well. The measuring and control method is used for controlling a working fluid level by controlling the casing pressure of the coal bed gas well so as to stop the using of a traditional gas-liquid separator on the gas well field; requirements on gas production rate measurement can be satisfied by using a gas flowmeter; meanwhile, the liquid is separated from solid-phase coal powder and a gas after produced to the ground and before passing through a liquid flowmeter, thus the measuring accuracy is improved; the measurement is realized and the measuring accuracy is also increased while the liquid production rate is very small. A produced liquid measuring device, a produced gas measuring device and a control box provided by the invention are respectively mounted on a base bracket to form a highly integrated automatic exploitation measuring and control system of the coal bed gas well; therefore, the parameters are measured and field equipments on the well field are also simplified; the device is very simple and convenient to move, mount, operate, use and maintain; moreover, the invention also provides an optimized exploitation control method of a coal bed gas well.
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Description

technical field

[0001] The invention belongs to a coalbed gas well drainage measuring device and method, in particular to a measuring device and a measuring method for measuring the output fluid of a coalbed gas well. Background technique

[0002] Although people have realized the automatic measurement of production parameters such as gas output, liquid output, bottom hole pressure, casing pressure, power parameters and motor operating parameters of coalbed methane wells, the existing automatic measurement and on-site control system The main problems that exist are:

[0003] Measurement method of gas production: At present, gas flowmeters are used in coalbed methane wells to realize automatic measurement of gas production, and the measurement data is transmitted to the control system through the data transmission function of the gas flowmeter. The initial daily gas production of most wells is 100-300 standard cubic meters. The usual practice is to install a flowmeter with a...

Examples

Embodiment Construction

[0051] Below in conjunction with example the present invention is described in detail.

[0052] The present invention can be applied not only to coal bed gas well site, but also to oil and gas well site measurement and control. The application conditions are similar and will not be described one by one here.

[0053] like figure 1 and figure 2 As shown, the coalbed methane well drainage measurement system of the present invention includes a base support 21, a production fluid measurement device, a produced gas measurement device and a control system. The produced liquid measuring device and the produced gas measuring device are installed at one end of the base support 21 , and the control system control box is installed at the other end of the base support 21 . The present invention integrates existing control devices such as various collection and measurement control devices and electrical equipment (such as frequency converters, dynamic electric parameter collectors and c...