SU601405A1 - Sampler for testing reservoirs - Google Patents

Description

the process of launching the sampling device into the well and testing the sheet, and the baylasny channel 13, which reports the severity 14 inside the rod from above: 11A hollow cavity and raising the sampler.

The stock (parts 7-8) is made with a radial Kamaolol A5 placed between seals 16-18. A hole 19 is made in the lower part of the shaft, connecting its cavity 14 with the cavity 9 of the boron chamber sampling, and lining 8 with the groove (annular groove) 2b. The rod is located in the center bore 21 of the housing, the spring is spring 22 in order to maintain it in the initial position in the event of an increase in pressure in the overpacking space B during the process of lowering test equipment into the well.

Saddle 5 BinyiOKHoro. Valve 1 contains an ullotnenna 23.

In the body of the body, a stopper mechanism 24 is located, which serves to hold the rod 03 in a lower position after the sampling chamber is closed, and the device 25, which measures the measurement of the pressure in the sampling chamber and transfers the reservoir sample to the container.

The channels 10, 13 of the exhaust valve seat, together with the cavity 14, 19, the radial channel 1 15, the hole 19, the valve stem seals 16-18 and the seal 23 of the exhaust valve seat make up the sampling system.

The sampler for the reservoir test works as follows.

In the test equipment set-up, the test probe was installed and descended into the well assembled as it was shown in FIG. one.

When lowering the drilling fluid from the bottom of the pump, it passes through the holes 14 and 19 in the rod, through the hollow 9 of the winder KaiMepbi and then through the channel 10 and the check valve // of the saddle of the outlet valve in the overlaid cavity 12 and into the balancing holes of the test pieces . The radial channel 15 in the stock and the bypass channel 13 of the seat of the overhead valve, as well as the cavity 9 of the sampling chamber and baylasny channel 13 when descending, are separated 1 corresponding to the seals 16 and 18. The radial channel 15 is isolated from the well-formed cavity 12 by the seal 17.

A vystul 8 keeps the stem from moving upward under the action of the mud stem.

The flow path 20 is above the locking device 24.

After the lacquerine, the last fluid flows through the device indicated above the flow of the drilling fluid during the descent. At the same time, in the initial test period, the drilling rig iKaiMepbi 9 is displaced from the drilling solution, after which the chamber remains permanently filled with formation fluid.

At the end of the test, when the openings of the balancing valve's openings are tested, the test fluid reservoir tends to move from the packer zone to the backer zone. This movement is prevented by the reverse vowel 11.

Under the action of a pressure differential in the upper and lower cavities of the device, the rod, the spring is compressed, leaks out. In doing so, the hole 19 will move under the seal 23, and the 1 channel 10 is uncoupled with the sampling chamber 9 by the seal 18.

After the sampling chamber is closed, the radial channel 15 is further co-located with the bypass pot 13 upon further movement of the rod, ensuring pressure equalization in the submerge and supra-pit zones of the well without removing the pager from the packeroshka and raising the test equipment.

Simultaneously with the combination of channels 13 and 15, the locking mechanism 24 is activated, which further prevents the movement of the iBiBepx rod; The movement of the 1d downstack is limited due to the emphasis of its lower end on the end of the body.

At the TaiKOM position, the sampler rises to the surface with clean, hermetic sampling of formation fluid taken.

After lifting, the device is disconnected from other units of the test equipment, the pressure in the test chamber 9 is measured by the device 25, and the sample is transferred to special containers.

In order to capture the throughput capacity, several channels 10, 13, 15, 19 can be made in the device, while all the channels 10 should have non-return valves //.

At present, in most areas of the country, when working with reservoir testers, due to the lack of selection of ger / metized samples of the reservoir fluid, calculations of such reservoir parameters, each formation permeability coefficient and the bottom hole zone c1 are littered, involve data on the density and mobility (viscosity) of fluid IB of reservoir conditions at the well wells and area m. At the same time, IB calculation errors can reach 50-100% of the value. Ensuring reliable sampling and daylift of the pressurized sample of reservoir fluid using BipXiHiOCTb will allow you to exclude these (ki and, accordingly, increase the accuracy of information about the tested objects and assess industrial oil and gas reserves).

Claims (1)

Invention Formula Sampling for a formation tester, including a housing, a sampling chamber c. B) Puak and discharge valves rigidly interconnected by a hollow shield, and