SU1535971A1 - Device for affecting upon hole-bottom area of wells - Google Patents

Abstract

The invention relates to the oil and gas industry. The purpose of the invention is to increase the reliability of the operation of the device by preventing the casing string from being removed and enabling the stable self-oscillating movement of the locking element. The device includes a hollow body (K) 1, a hollow pipe (P) 2 placed in K, which forms with it an annular cavity 3, a partition 4 mounted on the pipe 2, a saddle 5, a locking element 6 interacting with it, a spring-loaded piston 7 and placed in P 2 Cup 8 with an axial channel 9 and sleeve 10. On the partition 4, P 2 is installed on a threaded connection with the ability to control the spring stiffness of the element 6. The partition 4 is installed in K 1 movably and with the possibility of adjusting the spring rigidity of the piston 7 and has axial channels 11 and 12, respectively for communicating the cavity 2 and P 3 of the annular cavity with the borehole bottom. During the descent of the device into the well on the tubing string, the well fluid enters the tubes through the cavity 3 and the piston 7. With the beginning of the direct circulation of fluid in the well, periodic opening and closing of the element 6 occurs and a uniform flow of fluid is converted into a pulsating one. The device allows to increase the rate of penetration. 1 il.

Description

The invention relates to the oil industry and can be caused by the impact on the bottom zone of the well and during the washing of the well during its drilling.

To sing the invention to increase the reliability of the operation of the device by preventing the casing of the column and the liver from escaping the possibility of stable auto-coupling of the locking element.

The drawing shows a prearranged mouth

The device includes a hollow measles. 1 a hollow branch pipe 2 arranged in a housing 2 which forms with it an annular cavity 3 mounted on branch pipe 2, a baffle 4. saddle 5, a locking element 6 cooperating with it, podprazhenny piston 7 and placed in branch pipe 2 sykan 8 with an axial channel H and BIS i to C) Pipe fitting 2 on the partition 4 on a threaded connection with the possibility of retarding stiffness of the locking element 6 The partition 4 is installed in the housing 1 also movably and with the ability to adjust the rigid spring of the piston 7 and has axial channels 11 and 12 respectively for GPG scheni cavity nozzle 2 and the annular space Sc borehole bottom (not shown)

Usability in i 1I impact on the prize of 3oii wells by working with the new “HI

The device is mounted on a string of pipes (not shown) and lowered into the wells. Liquid and wells are noeisnaer through the ropes 11 of the partition 4 into the hollow chamber 2, pressing the locking element h to the saddle 5 and closing the passage for the nocrsii 1 of the JI1COS1I column through the channels, Post Lennie IKOC gi into a combo occurs through the caps 12 of the seismic 4 to the neyust 3 Under the action of the pressure of the liquid, the piston 7 compresses the spring and moves inwards.

and ekvpzhishii, F1 IKOCII. fills lolonne grhb, preventing its possible smelling L by the beginning of direct circulation of fluid

0, the annular cavity 3 in the screenshot, is blocked by the piston 7, and the locking element 6, together with the valve 10, is displaced downward under pressure from the liquid, and the liquid flows to the drill holes of the bit and the bottom of the body. The pressure in the body of the epemge 6 decreases sharply and it is under the action again closes the sedan. Further, the opening and closing of the shut-off valve: memets1 6 is repeated and evenly on the PC of the IKOCTH wash water

P images in the first place

Fo / mtsla and io6pt Ji nu4

IETROIBIBO for action at wellbore zones 1, including a whole

The 5th court, which is placed into the hollow branch pipe, which forms an annular cavity with it, becomes a partition, seat and a locking element interacting with it, which is oi swinging so that, in order to increase the reliability of the work, These columns of pipes and the provision of a possible self-inking auto engine, i.e. 6a, is designed for locking the lock, it is equipped with a rubbed / boiled piston and installed in nai

5 lnt JKC 1 g with oi (ii.iM kap iov and plug n; H4t e UK, bore in the nozzle, and the sintered piston is installed in the housing with the possibility to overlap the ring along the UII between them and the control unit, while septum

0 is movably placed in the axial channel of the stack, and the locking element of the scTanoBien is on the bush (| than the patrol.% Is placed on the floor 1ke movably with the possibility of adjusting the spring stiffness of the locking element, and the partition is movably mounted

5 in the housing with the possibility of adjusting the rigidity of the piston spring and has channels for communicating the cavity of the pipe and the annular position of the piston area

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Claims (1)

Fore i st a invention A device for influencing the bottomhole zone of a well, including a hollow housing 35, located in the housing is a hollow pipe. which forms with them an annular cavity is mounted on a nozzle partition seat and interacting with it the locking element, characterized in that, with tsela.kt improve reliability ⁴ⁱ roysgva br mouth by preventing collapse of the pipe string and to permit stable self-oscillating motion of the locking element, it is equipped with a spring-loaded piston and a cup with an axial channel and a sleeve placed in the wheelhouse; the seat is made in the nozzle, and the spring-loaded piston is fitted with the possibility of overlapping I have an annular cavity between it and the pipe, while the glass is mounted on the partition, the sleeve 50 is movably placed in the axial channel of the glass, and the locking element is mounted on the sleeve. moreover, the nozzle is movably mounted on the baffle with the possibility of adjusting the stiffness of the spring of the locking element, and the baffle is movably mounted 55 in the housing with the possibility of adjusting the stiffness of the piston spring and has channels for communicating the nozzle cavity and the annular cavity with the bottomhole zone.