Valve sampler device

FIELD: mining; physics.

SUBSTANCE: device includes seat and ferromagnetic valve, the seat being equipped with a permanent magnet system, while the valve has ferromagnetic inserts with Curie magnetic transition point equal to oil temperature at the sampling site.

EFFECT: improved device efficiency due to actuating valve device at given oil sampling site and creating additional press force.

1 dwg


The invention relates to the oil industry and can be used, for example, in the samplers for sampling oil from the well.

The closest technical solution to the present invention is a valve mechanism of the sampler system VNII-1 [a Study of reservoir oil / Aijunero. - M.: Nedra, 1987. - P.54-55], which contains the saddle valve of a ferromagnetic material and the node control valve. The control valve is carried out by using hydraulic power relay, actuated by the pressure of oil in the well and intended to open access oil in the sampler and closing it after filling.

The disadvantage of the prototype is its lack of effectiveness associated with the dependence of the designated operation (opening and closing valve device) from many uncontrollable factors (temperature difference at the top and the bottom hole, the speed of descent of the device, emergency stops sampler), poor seals on the valve device due to the fact that the force of the oil pressure holding the valve to the seat, is not large enough.

Solved the problem and the expected technical result consists in increasing the efficiency of the device by actuation of the valve device in the predetermined sampling oil and create extra is niceley clamping force, allowing to increase the tightness due to a more tight fit of the valve to the seat.

The problem is solved in that the valve device of the sampler, consisting of a seat and the valve is made of ferromagnetic material, characterized in that the saddle is equipped with a system of permanent magnets, and the valve has an insertion of a ferromagnetic material with a Curie point equal to the temperature of oil in the place of sample collection.

Point called Curie temperature, above which disappears spontaneous magnetization of a ferromagnet, and he goes into the paramagnetic state [New Polytechnical dictionary / edited Awesonme. - M.: Great Russian encyclopedia, 2000. - P. 256]. For example, the Curie point of iron electrolytic is 768°C.[Handbook of elementary physics / Niegocin, Mgexercise. - M.: Nauka. - 1988. - P. 166 (table 110 Curie Temperature metals)], and the Curie point of some alloys of the system Fe-Nd-EN is in the range from 36°s up to 202° [Wiesner and other Study of the magnetic properties of alloys of the system Fe-Nd-EN. - Vestnik Mosk. Univ. Ser. Chemistry. 2005. V.46. No. 6. S].

The drawing shows the proposed device, where

1 - Saddle

2 - Valve of a ferromagnetic material

3 - Insertion of a ferromagnetic material with a Curie point equal to the temperature of oil in the place of sampling.

4 - System of permanent magnets.

The device comprises a seat 1, is equipped with a system of permanent magnets 4, and the valve 2 is made of ferromagnetic material with inserts 3 of ferromagnetic material with a Curie point equal to the temperature of oil in the place of sampling. To the device it is recommended to make a set of replacement valves 2, with insert 3 made of ferromagnetic materials with different Curie points.

In the drawing, for example, shows the inventive device with option conical valve 2 of a ferromagnetic material. The valve 2 has an insert 3 made of ferromagnetic material with a Curie point equal to the temperature of oil in the place of sample collection.

System of permanent magnets 4, equipping the saddle 1 is preferably the maximum depth of the saddle for most deep-seated in his valve and watertight; for example, directly from the outside of the valve device. The resulting magnetic field causes a force which presses the valve 2 of a ferromagnetic material to the seat 1.

The proposed valve device operates as follows.

Before taking samples in the valve device is installed valve 2, with insert 3 made of ferromagnetic material with a Curie point equal to the temperature of the oil at the proposed location of sampling. In the initial state, the valve 2 is drawn to the system of magnets 4 and pressed against the edlu 1. Clamping force sufficient to hold the valve device in the closed state. It is known that the temperature of the oil reservoirs depends on the depth. Upon reaching the desired depth, which corresponds to a certain temperature of the oil, the valve 2 in the heat transfer oil is heated to this temperature, equal to the Curie point of the ferromagnetic material of the insert 3. Insert 3 lose their magnetic properties, downforce is reduced under the action of pressure oil valve device is opened. Resulting in a sample of oil enters the sampler. Upon receipt of oil inside the sampler external and internal pressure are aligned. The valve 2 is pressed to the seat 1 with a force sufficient to prevent leakage of oil from the sampler in the early stages of his recovery. When lifting the sampler valve 2 is cooled below the Curie point, the magnetic properties of the inserts 3 are restored and the valve 2 is pressed to the seat 1, securely sealing a sample of oil.

Valve device sampler, consisting of a seat and the valve of a ferromagnetic material, characterized in that the saddle is equipped with a system of permanent magnets, and the valve has an insertion of a ferromagnetic material with a Curie point equal to the temperature of oil in the place of sample collection.


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1 dwg

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3 dwg

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2 cl, 1 dwg