A floating quantitative degasser

Abstract

The invention discloses a floating type quantitative degasser. A support thereof is erected above a slurry channel and comprises a bracket guide rail, a slide block, a big guide wheel and a small guide wheel; a slurry absorbing head is arranged on the support and comprises a gas bag, a filtration sieve, a fixing pin, a connecting tube and a delay limit relay. The slurry absorbing head is connected to an explosion-proof quantitative pump through the connecting tube, the explosion-proof quantitative pump is connected to a double-layer sediment box, the double-layer sediment box is connected to a heater, and the heater is connected to a degassing cylinder. A slurry outlet of the degassing cylinder is connected to a slurry pool, a gas collecting opening is arranged on the opposite side of the slurry outlet, a gas collecting device of the degassing cylinder is connected to a filter through a gas tube, the filter is connected to a pressure gage, the pressure gage is connected to an explosion-proof vacuum pump, and the explosion-proof vacuum pump is connected to a data processing terminal. The delay limit relay, the explosion-proof quantitative pump, an explosion-proof motor and the explosion-proof vacuum pump are adjusted through a circuit control system. The floating type quantitative degasser is adjusted along with liquid floating, is prevented from bottoming and overflowing, and further has the functions of slurry recrushing and true and false triggering identification.

Description

technical field [0001] The invention relates to a floating quantitative degasser, which is applied to the comprehensive mud logging of petroleum geological drilling to crush the mud returned and collect and analyze the detached gas. The invention belongs to the field of gas logging technology equipment. Background technique [0002] During the drilling process, the oil and gas in the existing rock formation enters the circulating mud and returns to the surface. Gas logging technology is used to detect and analyze the oil and gas information in the returning mud to infer the oil and gas situation in the drilled formation. The currently used degassers mainly have the following problems: 1. The degassing effect is inaccurate. Most degassers adopt a cylindrical structure, and there is a gap with the mud liquid level. After the mud is broken, all the oil and gas contained in the mud cannot enter the collection device. Due to the influence of the mud pump and the formation, the fl...

AI Technical Summary

Problems solved by technology

The currently used degassers mainly have the following problems: 1. The degassing effect is not accurate. Most of the degassers adopt a cylindrical structure, and there is a gap between the mud and the liquid surface. After the mud is broken, all the oil and gas contained in the mud cannot enter the collection device.

Due to the influence of the mud pump and the formation, the flow rate of the upward and downward mud changes constantly, and the amount of mud absorbed each time is different, and the gas content collected is different, which seriously affects the accuracy of oil and gas analysis.

2. The ability of the degasser to change with the liquid level is poor. Due to the influence of the formation pressure and the mud pump, the mud liquid level fluctuates greatly. Most degassers adjust the height of the bracket or the degasser through a hand-operated screw, and cannot follow the liquid level in real time. If the liquid level is too low, it is easy to make the degasser "idle"; if the liquid level is too high, it is easy to make the mud enter the gas collection pipe

3. When a leakage or well kick occurs, the mud liquid level suddenly drops or drops, and personnel cannot arrive at the scene in time

4. The disassembly and assembly of the overall structure is complicated, the equipment is heavy, and the degasser is prone to failure. At least two staff are required, and the operation is on the side of the mud pool, so personal safety is not guaranteed.

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