SU1444509A1 - Multicycle formation tester - Google Patents

Abstract

This invention relates to the mining industry. The goal is to increase the reliability of operation, to ensure the possibility of pacing the drilling tool in the process of fluid flow and with the restoration of pressure while simplifying the design of the tester. It contains a housing (K) 1 with a radial channel and a hollow rod 2 placed in it with a receiving valve 3 and a time relay 4. The tester has a locking mechanism of position Open, Closed, mounted in K 1 between valve 3 and stem 2. Relay 4 is made in channel K 1 with the possibility of communicating the annulus with valve cavity 3. It is spring-loaded relative to K 1 using prulins 10. The mechanism is made in the form of cam half couplings 5. and 6. Due to the radial forces, the half coupling 6 rotates through a certain angle. After the load is removed due to the spring 10 and the hydrostatic pressure, the half coupling 6 moves upwards, fixing the valve 3. The valve 3 is open. Fluid is flowing into the test cavity. To close valve 3, the process is repeated. 1 hp ff, 3 ill. (L (p ///./

Description

one

The invention relates to the mining industry, in particular to the device

for testing multi-cycle formations.

The aim of the invention is to increase the reliability of operation, to provide the possibility of pacing the drilling tool in the process of fluid flow and with the restoration of pressure while simplifying the design of the tester.

FIG. 1 shows a reservoir tester, the total of FIG. 2 is the same, section A-A in FIG. 1; FIG. 3 is the same, section BB in FIG. one.

The tester consists of a case t With a radial channel and a hollow rod 2 placed in it with a receiving valve 3. A relay 4 times is made in the radial channel of case 1, communicating annulus with valve 3. Between valve 3 and the itok 2 a locking mechanism is placed tool weight Then, due to the radial forces of the half-coupling 6, the specific angle is applied to the axial load, and if the axial load is removed by the spring 10 and hydrostatic, it moves upwards, fixing the open position of the receiving valve to 3. Fluid is flowing into the tool cavity. In order to close the valve for the period of pressure recovery, the process is repeated at the opening, the axial load is again created, the lower half of that 6 rotates, but with the only difference that the projections 8 enter into deep hole 9 and fix the position

ten

IS

20

Claims (3)

1. Multi-cycle tester, comprising a housing with a radial channel and a hollow rod placed in it with a receiving valve and a relay brides Open, Closed, executed; 25 times, different thirty in the form of cam half couplings 5 and 6 / Upper half coupling 5 on the outside has longitudinal grooves 7 corresponding to the inner slots of the housing 1 of the housing 1. The lower coupling half 6 has profile slots 9 of different depths for reliable fixation of the open and closed position of the receiving valve 3. It is spring-loaded relative to the housing 1 by means of a spring 10. The tester works as follows. When creating an axial load, the upper half coupling 5, slipping along the protrusions MQ 8, moves the lower coupling half 6 to the exit from the projection 8, the load is determined by the change in both the axial load and the stroke length. after exiting protrusion 8 pada35 By the fact that, in order to increase the reliability of operation, to ensure the possibility of pacing the drilling tool during the process of establishing pressure and at the same time simplifying the design of the test, it is equipped with a 1 x open position, closed mechanism installed in the housing between receiving valve and hollow rod, p time taken in the radial channel of the housing with the possibility of communicating the annulus from the receiving valve strips, which is spring-loaded with respect to the housing 2. The formation tester according to claim 1, characterized in that the fixing mechanism of the position O burrowed Closed made as cam coupling half. 445092 no tool weight. Then, due to the radial forces, the half-coupling 6 rotates through a certain angle, and after removing the axial load due to the spring 10 and the hydrostatic pressure, it moves upwards, fixing the open position of the receiving valve 3. Fluid is flowing into the tool cavity. To close the valve 3 for the period of pressure reduction, the process is repeated at the opening, i.e. the axial load is again created, the lower coupling half 6 is rotated, but with the only difference that the projections 8 enter into the deep slots 9 and fix the closed position. ten IS Formula of the invention 1. Multi-cycle tester. housing, comprising a housing with a radial channel and a hollow rod with a receiving valve and a relay placed in it 0 five By the fact that, in order to increase the reliability of the operation, to ensure the possibility of the pacing of the drilling tool in the p: rn eyebrow process and when the pressure is applied while at the same time simplifying the design of the tester, it is equipped with a 1m open position, closed in the case between a valve and a hollow rod, the time relay being made in the radial channel of the housing with the possibility of communicating the annulus with the cavity of the receiving valve, which is spring-loaded relative to the building a. 2. The formation tester according to claim 1, characterized in that the locking mechanism is in the Open position, Closed made as cam coupling half. Fig.Z