SU380828A1 - i ALL-UNION-vm • Fri, q ~ iFШi ^^ ':' 'HASi - Google Patents

Description

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The invention relates to a device for sampling fluid from a nlast iri using hydraulic formation testers on a drill pipe.

A device for sampling fluid from a formation during testing is known, consisting of a shut-off rotary clanan, a pipe and a hydraulic tester of formations with inlets and equalization valves and a temporary relay. In the course of the formation test, fluid is drawn into a pipe located between the shut-off valve and the expander.

A disadvantage of the known device is that a fluid sample, located inside the pipe, between the formation tester and the nozzle valve, is taken only after it has been brought to atmospheric pressure. As a result, the most valuable gas component of the formation fluid is released into the air. This prevents the o-limit of the gas factor and the sampling of fluid under reservoir conditions for laboratory analysis.

The proposed device for collecting fluid from the reservoir, consisting of a shut-off valve, pipe, couplings and a hydraulic reservoir tester, differs from the well-known in that it is equipped with two taps, located

Respectively, in the upper part of the hydraulic system SOON tester of the reservoir and the lower part of the zanorno-andovorotny KL Alan

This provides a measurement of the gas factor taken from the reservoir fluid and the transportation of the fluid sample in reservoir conditions to the laboratory.

Ma FIG. shows the proposed device in General; in fig. 2 - crane-sub, about 1, solo section; in fig. 3 - crane transponder, section along A-A.

The device consists of a pipe (Fig. 1), couplings 2 and 3, and 5 connecting valves, 5. To the body of the connecting crane 5

A top-turn clanan 6 is attached on top, and a pipe is underneath through a sleeve 2. To the body of the crane 4, from below, is attached the hydraulic engine builder of layers 7, and from above through the sleeve 3 - a pipe /.

The device also contains a device 8 for measuring pressure and sampling, to conclusion 9 of which a gas meter 10 is attached, and a portable container //.

Edges 4 and 5 are made the same. A crane 12 and a plug 13 (see Fig. 1) are screwed into the housing of the non-water heater, having 1, no seals and a turnkey socket. In addition, the body of the crane sub has an opening 14 extending into the passage 15 for passage

fluid. This channel communicates with the internal cavity of the pipe and the hydraulic tester of the formation or with the rotary valve.

A device attached to the drill pipe collar with closed sub valves is lowered into. study interval. After opening the inlet valve of the hydraulic formation tester 7, the formation fluid begins to flow into the pipe.

After pipe / reservoir fluid is filled, the turn valve and then the inlet valve of the hydraulic formation tester is closed, and the fluid in the pipe is sealed, while it is under pressure close to the reservoir.

Measuring equipment is attached to the surface of the device. To do this, unscrew the plug 13 of the crane 5, and insert the fittings 8 into the plug socket to measure the pressure and take a sample. A gas meter / 0 is connected to terminal 9 of device 8.

After opening the valve 12, the pressure under which the sampled sample in the pipe 1 is monitored and the volume of gas released from the sealed section is measured with a gas meter 10.

For transporting the selected liquid slurry to the laboratory, unscrew the screw 13 krav on 4, and a pump is attached to its socket.

The crane 72 (lower) is unscrewed and the pump creates pressure, somewhat more sushi, flowing in the liquid. In this case, the liquid begins to flow into the portable container 11. During the transfer, the pressure is kept constant and controlled by the device 8.

The described device allows to select and investigate practically any necessary volumes of fluid to study fluid properties under reservoir conditions, and to perform analyzes both directly on wells and in laboratory conditions.

Subject invention

A device for taking fluid from the reservoir, consisting of a shut-off valve, couplings, pipe, hydraulic reservoir tester, characterized in that, in order to determine the gas factor and traps (Porting the fluid sample from the well to the laboratory in the reservoir state , it is equipped with two sub valves, the first of which is installed between the hydraulic formation tester and the pipe, and the second between the shut-off valve and the pipe.

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