SU1112116A1 - Cable-suspended device for formation testing - Google Patents

Abstract

A DEVICE FOR TESTING PLATES ON A CABLE, comprising a housing, a clamping mechanic M with a drive and a sealing element with an inlet channel communicated with the well space, test receiving chambers. communicated between themselves and the inlet channel. m, characterized in that, in order to increase the efficiency by providing a determination of the inflow rate and reservoir pressure over the time allowed for the study of one point of the reservoir due to the geological and technical capabilities of the well, The housing is equipped with an additional sampling chamber with a multi-purpose chamber and is made sliding in the form of a telescopic cylinder with Porsch and hollow bristles with varying degrees of differentiation, in which the probe-specific cells are located, and the chamber located in The central stem is communicated with the downstream cage using a non-return valve, and from the distended cage down through the stop valve with a differential piston, (L installed - with the possibility of interaction with the end wall of the upstream chamber and the inlet channel. to Oi

Description

The invention relates to oilfield () geophilic studies of oil and 1 well wells, and is intended to take a sample of the liquid and gas produced by the reservoir, as well as determine the hydrodynamic parameters directly during the drilling process.

A device is known for the treatment of ilast, sodsrzhan, its cornea, the hermetic sealing of the sampling site of the coffin | 1 and nroboir1 em 11e cameras with 1J.

However, this device has a large size, does not allow the selection of the first part of the sample in the separate container and carry it out on the surface in a sealed form, which reduces the methodological possibilities of the anaparature while studying weakly developed reservoirs and (in time).

It is also known to have device e; 1 on the treatment of nlasts on a cable, containing 1, its body, the pressing mechanism e n-water and the i-seal element with the thrust channel communicated with the well space, and the probe-receiving chambers communicated between themselves and the inlet channel 2. However, the known device has the overall dimensions in length, which assists in the work of the service personnel when the well is lowered. In addition to Toio, the device does not provide for the possibility of selecting the latter part in a separate container and carrying it to the surface in a sealed form.

The aim of the invention is to increase operational efficiency by ensuring that the inflow velocity and the inflow pressure for 1f.me are acceptable for studying a single point of the formation due to the geo-technical capabilities of the well.

Delivered G1.l is achieved by the fact that in the device for the installation of cables on the cable containing the corns, the driving mechanism with the drive and sealing, they element e inlet channel communicated with the borehole space, the sample receiving chambers, connected between themselves and the inlet channel. , the case is equipped with a donor; a probable receiving chamber; and B1 1 is filled with an expandable l-type cylinder with nors and 1 ntocamps with a different wall) 1 differential differential, in which the receiving chambers, NPA in the central rod, eoobp; with 1N-ene 1zheraspolozhennoy chamber by means of the check valve, and a cam vysheraepolozhennoy - when the isolation valve POM01TSI e differential piston mounted to cooperate e vineraepolozhesh second end wall chamber and the inlet channel.

FIG. shows a device for testing the cable layers, the initial application; on (rig. 2 and 3), when filling nrobonriemny chambers with the test liquid.

The device consists of a body that is designed (LO in the form of a three-sec-nionic telescopic ts.lppdra. In the upper part of the case there is an actuator 1, a valve box 2, the clamping mechanism 3 with e), un) N.1 element 4 and inlet m channel, || 5 pressure glle.

In the hollow sections of the telescopic cylinder there are sample receiving chambers: in the lower section is chamber 6 communicated with kamera 7, and in the upper section is chamber 8. In the same sections, exalted 1dlferenng, 1: rial riopnjHH 9 and 10, and the area of the section of the first one is larger than its initial movement is provided. In the piston rod noloet, a hollow volume chamber 11 is placed in a hollow volume, Fi the bottom of which is fitted with a spring-loaded non-return valve 12 supported by a pointed annular part in support 13. In the upper part of the chamber 11 of the volumetric volume a stop valve is installed with D1 (|) (} Potential piston 14. Chamber 1 1 volume is selected from methodological considerations depending on the inflow velocity in low permeability formations.

The sequence of nominating PLAYERS is required 9 and. 10 is provided by the difference in the working numbers of these

IHTOKOB.

The device operates as follows (1, km).

Prm descent into the well nopHiHi; 9 and 10 are in the extreme upper position and are held by the action of the hydrostatic pressure of a hundred lb of fluid in the well on them. Klapak i4 is open and vriH ;;; ie - with its end in the valve box: -: 2. After the installation of the device on ng: .this oiipc; Bovani 1k :. with the top -;:: / / -: the clamping device 3 Г1) and the kimael device with a sealing bag 4 against the borehole wall, opens; n the main external valve of the device (not shown) and the fluid or gas from the reservoir under the action of a pressure differential (reservoir and atmoofer pressure in the instrument) flows through the inlet channel through the channels in the valve box 2 through the valve 14 to chamber I.

Upon reaching the pressure gauge set by the design of the armature) a, the klag1a11a 12 is uncoupled and the fluid from the chamber 11 flows through the channels in the tank 9 into the test tube HVio at the end of which the piston 9 moves down to the stop, freeing above volume 7 for sample filling.

After filling the sample-receiving chambers 6, 7 and 11, the fluid pressure in them increases, which leads to the breakdown of the fluid: 10 and closing of the valves i4. moreover, the volume 8 released above the piston 10 is also filled with formation fluid. After all the sample chambers are completely filled, the pressure in them is compared with the reservoir, the main inlet valve and check valve 12 are closed, the sample is sealed to a small volume, the pressure system is closed and the device rises to the day surface where pressure is measured by a general investor using pressure methods.

The use of the invention will reduce the time spent on the study of poorly permeable collectors and simplify the work with the device during the descent into the well due to the shortage of the length of the eio of the building.

M

Vt / z.J

Claims (1)

DEVICE FOR TESTING LAYERS ON A CABLE, comprising a housing, a pressure mechanism with a drive and a sealing element with an inlet channel in communication with the borehole space, sampling chambers communicated between themselves and the inlet channel, characterized in that, in order to increase work efficiency by providing speed determination inflow and reservoir pressure during the time allowed for the study of one point of the reservoir due to the geological and technical capabilities of the well, the body is equipped with an additional sampling chamber it is made sliding in the form of a telescopic cylinder with pistons and hollow rods with various degrees of differentiation, in which the sampling chambers are located, the chamber located in the central rod communicating with the downstream chamber using a non-return valve, and with the upstream chamber using a shut-off valve a valve with a differential piston ® installed with the possibility of interaction with the end wall of the upstream chamber and the inlet channel. SU „„ 1112116> Fig 1 121 16 ί