SU142238A1 - Depth sampler - Google Patents

Description

Known samplers do not provide extraction of samples with preservation of their phase state.

The proposed sampler does not have this disadvantage, since the lsicler and the overflow tube are lowered to the bottom of the ballast chamber, and the inlet and outlet channels are provided with overlapping membranes pierced with needles in the nipple channel connecting the chamber.

FIG. 1 shows the proposed sampler; in fig. 2 — device head for actuation upon meeting a pipe joint; in fig. 3 - tee used for sample release.

The proposed sampler is made of the following main components and parts: intake valve /, intake chamber 2, separation piston 3, ballast chamber 4, jet 5, tube 6, nipple 7, bottom 8 of ballast chamber with valve 9 for air injection and plug 10, housing // valve with spring 12 and figured nut 13 with release membrane 14, membrane housing 15 with figured nut 16 and diaphragm / 7 inlet, filter housing 18 with mesh 19, impact needle 20 with spring 21, spring loaded dogs 22, actuator housing 23 a rod 24 and a nut 25 and a cone 26. In to On the switch mechanism, there are windows 27 and 28.

Before descending into the well, the needle-drummer is in the cocked position, the separation piston is in the extreme upper position.

The cavity of the intake chamber under the piston, the tube and the kizh :: a part of the ballast chamber is filled with water. The water-free volume of the ballast chamber is filled with air meters under a pressure of 1-2 at: l. Air # 142238-2 -

The valve is closed, the valve outlet channel is blocked by a membrane, and the body inlet is blocked by an inlet membrane.

To bring the sampler into action when it reaches a predetermined depth, the load 29 is sent along the cable 30. The load hits the rod 24, the latter pushes down the cone 26, which pushes the pawl 22 and the hammer 20 through the action of the prulsine 21 pierces the inlet membrane 17. The wellbore fluid flows through the screen 19 and the channel in the body of the striker 20 into the cavity of the inlet membrane housing 15, the check valve 1 is pressed, the fluid passes through the grooves in the valve body and enters the intake chamber 2 on the separation piston 3. Under pressure, the piston descends and the intake chamber fills The water under the piston through the jet 5 and the tube 6 is forced into the ballast chamber 4. Throttling in the jet ensures the sampler is slowly filled. When the piston 3 is lowered, the valve / closes under the action of the spring 12 and the sampler is removed to the surface. All the upper parts, including the housing 15, are removed, and a figured nut 13 is screwed on a tee 31. The needle / 32 pierces the membrane / 4 outlets and removes the sample taken.

If for some reason they want the sampler to work from the pipe joints, then it is supplied with a head. When lifting, the lever 33 rests on the pipe joint.

Subject invention

A two-chamber sampler for sampling fluid from boreholes from the required depth, from a well, and so that, in order to obtain an undisturbed sample from a well from a predetermined depth, a jet is installed in the nipple channel of the connected chamber. and an overflow tube, the lumps to the bottom of the ballast chamber, and the inlet and outlet channels are provided with membranes piercing them, punctured with needles during the activation period.