SU720141A1 - Deep-well perforator - Google Patents

Description

one

The invention relates to downhole drills and is intended for use in the oil industry.

A wellbore perforator is known, comprising a housing with abrasion-resistant nozzles mounted on it, the flow part of which is hydraulically communicated with the internal cavity of housing 1.

A wellbore perforator is also known, comprising a housing and a hollow rod housed therein, associated with a guide element, and a nozzle 2.

A disadvantage of the known perforator is the unsatisfactory depth of the perforation channels formed by it in the formation due to insufficient penetration of the nozzle into the formation.

The aim of the invention is to increase the depth of penetration of the nozzle into the formation.

The goal is achieved by the fact that the proposed perforator is equipped with a mechanism of circular movement of the guide element and a cylinder connected to a hollow rod, and cylinders in one of which a piston and its piston cavity are connected.

with an internal cavity of a rod, and a piston cavity - with a well.

The mechanism of circular movement of the guide element is made in the form of a rack and pinion gear connected to the hollow rod, on the gear shaft of which there is a spherical eccentric placed in a spherical slot of the guide element fixed to the housing by means of an axis.

FIG. 1 shows a downhole perforator, a general view; in fig. 2 shows the mechanism for circular movement of the guide element; FIG. 3 - section A-A of FIG. 2. The downhole perforator comprises a housing 1, hollow rod 2 accommodated therein,

connected with the guide element 3, and the nozzle 4. The perforator is also equipped with a mechanism for circular movement of the guide element connected with the hollow rod and cylinders 5 and 6. In the cylinder 5 there is a piston 7 and its over piston cavity 8 with the internal cavity 9 a hollow rod, and a piston cavity 10 - with a well or with annulus I.

The mechanism of circular movement of the iipaBviHroiuero element is made in the form of a gear rack connected to the hollow rod.

12 shaft 13 and gears 14. A spherical eccentric 15 is mounted on the shaft 13, placed in the spherical socket 16 of the guide element 3, which is fixed by lia to housing 1 via axis 17. Nozzle 4 is connected to cylinder 6 by tube 18. Cavity 8 is communicated with cavity 9, rod channel 19, and cavity 10, the total price with annular space 11 channel .20.

The partition 21 separates the cylinders 5 and 6.

A downhole perforator works in the following way.

Liquid with abrasive under pressure enters the hollow rod 2, cylinders 5 and 6, tube 18 and nozzle 4. During fluid flow, the hollow rod 2 moves down with the piston 7 and rail 12. The rack rotates gear 14, eccentric 15 and shaft 13. The eccentric 15 interacts with the directional element with which the oscillating motion around the shaft

13 and along the axis 17. At the same time, a liquid with an abrasive stitch cuts a circular hole in the column. When the rail interacts with the neck, the tube 18 with the nozzle 4 does not have longitudinal mixing from the hollow rod 2 due to the fact that the cylinders 5 and 6 h0 move in a stationary position, and the tube 18 is connected with it. At the same time, the fluid from the hollow rod through channel 19 propels into the supra-piston space and therefore

the rod together with the piston m 7 descends to the partition wall 21. As soon as the gear of the rail 12 passes the gears 14, and, -; Corresponding element 3 is stopped :; : body movements, and the cylinders 5 and 6 1, with the tube 18 and the nozzle 4, begin to move downward along the axis of the well. At the same time, the tube 18 passes through the curvilinear channel of the guiding element 3, cutting a hole in the wall of the casing string and deepens into the formation as the rock breaks down with a stream of fluid flowing out of the ea:, -; .. 4. Pa3Ev; ep ao / .: v4i4 “Oro to - ;;„ h-; iepcTHR og1) is well velch1-1; (1I; i -;: ci, i,:) go goban, pipry - k-sh ha ha Cc. After the passage of the tube from us, lkoi ;;: i chadan | yu depth Tpv6ir / i and; jribcall. For re krfop

11LLG-;: it is necessary -, |;; -:

losgn, rearranged tsrsr-; r ::; n

P ;; e: I ;: YUCHTORIT,:. ;,: P:; I.

the proposed CKBJiwciMir :: - h -i-i-i allows you to go through a booty-ing. i; -: that of the second zone of the zone m v and -iHiin ;. filtration rate to stem /; kg-txpF. kih and gaseous a} locks: h--; - -; This allows elevation - - .lecJ; .:

I, Borehole perforator, (case n placed 3 pech lola / cnc with naira lupp1m lmsm ;; -: ny-hell, distinguished.yys ::;:, -.;, Uvelyeii depth goshokyyyuvs ;; to ki in layer, he s pannym with

:; H - ELEMECK U; ; And - ;; NID; one of which is aO1; LSN FOOT ;;

its nadlorpsheva cavity is roo6iurj; a cavity is the rod, and the ip-shaped spines are from the pits.

A. But punch:. . so that the mechanism .g. guiding - associated with the hollow. : -th gear, v -.; set spheg: - l chesh.enny:; ;: | 1degreeEich; ;with; ::: Yusreds-vp: l o; -k,

primal h /; : ,, - h-i;:; ; i-iP ni

Claims (2)

Claim 1. Bore hole puncher, ssdgu.yashi -'- case and hollow rod placed in it with a single hole with naravlyayushnl kkiet · ® nozzle, different tech-t ;,; In order to increase the depth of the Iroviknevekia pass,;, ki into the reservoir, it is equipped with a circular motion mechanism for guiding the eleme * connected with the hollow rod * ^! w · - -: mz to one of which a pornonon is installed; its supra-piston cavity is communicated with <· the internal cavity of the rod, and the sh’dnorshennaya cavity is connected with the well. 2. Hammer drill according to N. D ptl'ShL'dadz ·· in that the mechanism krstozid ,, deoymoz-hh directing the element tk _; t <- _; associated with the HOLLOW ALEX for <NUMBER ί of the transmission, on - w-ht ·! set efkshecht-hh a .4, h marked s; siu ... of the element, Tht. East-zhch.e-l- ’inforzt gg adopted 3 3: “Ykosh1R PGT Y-TCHhd t, 1 1 Patch '4.3. YOU. | 404. I. Copyright with the form t, and --h · d J 'D ° 323544, cl. P 21 B 43 / I lt - ttch. . 7201 V. Butyaga