Device for implosive treatment of stratum. RU patent 2506405.

IPC classes for russian patent Device for implosive treatment of stratum. RU patent 2506405. (RU 2506405):

E21B43/25 - Methods for stimulating production (dump bailers E21B0027020000; vibration generating arrangements E21B0028000000; chemical compositions therefor C09K0008600000)

E21B33/12 - Packers; Plugs (used for cementing E21B0033134000, E21B0033160000)

E21B28/00 - Vibration generating arrangements for boreholes or wells, e.g. for stimulating production (for drilling E21B0007240000; for transmitting measuring-signals E21B0047140000; for geophysical measurements G01V0001020000)

Another patents in same IPC classes:

Method and device for development of oil and gas-oil deposits / 2502865
Device for long-wave action on an oil deposit includes a shock-wave generator, a pump station, a cylinder with a stockless piston dividing it into two cavities. One cavity is connected to the well cavity and to a circulating pump, and the other one is connected to the shock-wave generator. With that, connection of the cylinder with the stockless piston to the circulating pump is made through a non-return valve. In the well there installed is a coaxial pipeline consisting of two pipelines, in which an internal pipeline of smaller diameter is made from elastic material and an external pipeline of larger diameter is made from solid material. Pulse pumping of working fluid is performed to the internal elastic pipeline of coaxial pipeline, and to space between internal elastic and external pipelines there pumped is working fluid so that average hydrostatic pressure in the internal pipeline and in the space between the internal and the external pipelines is maintained on the same level on all horizons of the injection well.

Device for treatment and recovery of formation productivity / 2494220
Device includes a working tube forming with a production string a behind-tube space, a packer, a controlled differential valve, a jet pump with a suction chamber interconnected with under-packer zone, with an outlet connected to behind-tube space and a chamber divided with the valve into two parts. One of the above parts is hydraulically connected to the working tube, and the other one is connected to the under-packer zone. In upper part of the jet pump housing there is a channel interconnected with upper and lower rows of through holes covered in initial position with a packing sleeve. At that, the working tube is interconnected with the well under-packer zone. Packing sleeve is equipped from above with a mounting seat for a ball released from the well head and fixed in the jet pump housing with a shear element. When in working position, packing sleeve has the possibility of restricted axial movement till interaction with inner annular projection of the housing and opening of upper and lower rows of through channels of the jet pump. The working tube is interconnected through upper row of through holes with the jet pump nozzle, and receiving chamber of the jet pump is interconnected through lower row of through holes and a differential valve with the under-packer zone.

Plant for impulse action on productive formation / 2490422
Plant involves a tubing string with a cylinder attached to it, a piston with end-to-end inner channel placed in the cylinder and a pressure valve installed at the lower end. In the cylinder walls there are radial windows than can be open at the upper point of the piston stroke. At the cylinder bottom there is a transmitter with possibility of reciprocative movement; it is connected to a waveguide mechanically. Radial windows are located at a smaller distance from the lower butt of the cylinder than the piston length.

Method for depressive hydrodynamic action on formation, and device for its implementation / 2488683
Group of inventions refers to modification of reversed vertical seismic profiling (VSP), which uses an implosive source as a source of elastic vibrations, which is used at the same time for hydrodynamic depressive action on the fracture. The method consists in action on the formation by means of abrupt opening of windows in an implosive chamber. Productive formations are tightly separated from the above lying borehole space by means of a hydraulic packer lowered together with the device to the cased well. Abrupt opening of windows in the chamber with atmospheric pressure leads to depressive action on the formation and evacuation from it to the chamber of formation fluid together with components that contaminate the filtrate. During action on the formation the change as to time of pressure of formation fluid is recorded and seismic signals are recorded with VSP receivers of direct and reflected waves from the chamber and from boundaries of the formation, which a hydraulic impact wave reaches. The device is intended for joint performance of reversed VSP or between borehole translucence and hydrodynamic action on productive formation after its opening and at repair in the cased well. The implosive device consists of a throttle and valve assembly, a packer, a working chamber (emitter), a receiver and a signal recording compartment.

Hydrodynamic pulsator / 2487987
Hydronamic pulsator consists of hollow body with a seat in axial channel, cylinder bushing, spring-loaded butt valve, perforated partition with a cup in axial channel of the hollow body. At that cylinder bushing is equipped with seat in the upper part, bottom with longitudinal holes and rod, partition in axial channel. In the lower part butt valve is equipped with skirt with longitudinal grooves, included into the seat axial channel and spring-loaded spherical fixture; it is mounted forming dynamic connection with rod. At that butt valve is equipped with a sleeve passing through the cup axial channel covered by spring-loaded ring piston, with circular cavity connected hydraulically with holes in the rod, its axial channel over the cavity. The cup axial channel under ring piston is connected hydraulically with holes in the rod, its axial channel under the cavity.

Device for treatment of bottomhole formation zone of a well and method for treatment of bottomhole formation zone of well / 2487237
Device for treatment of bottomwhole formation zone contains an air chamber with atmosphere pressure and length of 20-50 m connected to the first additional perforated chamber with seal layer, solid heat generating compound A with flame igniter, combustible high-strength compound B and breakable calibrated membrane located inside; the first added perforated chamber by means of a coupling with holes is connected to the second added inlet chamber with combustible high-strength compound C, igniter and breakable calibrated membrane located inside; the second additional perforated chamber by means of a coupling with added air chamber with length of 1.5-3 m connected by means of a coupling and metal adapter with to inlet chamber that is made of elastic plastic material with seal layer, solid acid generating compound D with igniter located inside; in the metal adapter there are drilled holes; compound A generated heat and gas of the following components by wt %: ammonium nitrate 35; sodium bichromate 2; barium nitrate 15; aluminium ASD-1 1.5; iron-aluminium thermite 31; epoxide compound (mixture of ED-20 tar, EDOS plasticiser and AF-2M hardener) 15.5; compound B is made of the following components by wt %: ammonium nitrate 30-40, calcium carbonate 5-10, the above epoxide compound 50-65; inside the added inlet chamber there is a layer of glass sealant and solid gas generating compound E made of the following compounds by wt %: ammonium nitrate 70, sodium bichromate 1, the above epoxide compound 29; compound C is made of the same composition as compound B; compound D is made as thermal-gas-chemical solid fuel with a layer of glass sealant and a layer of epoxide compound on top of it; the above fuel consists of the following components by wt %: ammonium nitrate 12-16, lithium fluoride 1-3, barium nitrate 5-8, aluminium ASD-1 0.7-0.8, iron-aluminium thermite 14-16, hexachlorane 20-30, polytetrafluoroethylene 20-30, the above epoxide compound 5-10. The method for treatment of bottomhole zone (BHZ) includes delivery of the above device by a wireline, combustion of compound D and formation of maximum quantity of chemical agents, holding for the purpose of reaction of acids produced during combustion with BHZ formation, running with installation of the coupling with holes at the level of treated stratum, opening of the chamber with length of 20-50 m, actuation of breakable calibrated membrane in result of layer-by-layer combustion of compounds A and B with implosion treatment of BHZ, removal of impurities from bottomhole stratum; during holding thermal-gas-chemical impact acts on the stratum for 30 minutes ad pressure can be corrected due to availability of holes in the metal adapter at fixed position of the above fuel inside the inlet chamber due to the above layers of sealant and compound with formation of gases heated up to high temperatures at high pressure within treatment range; opening of the chamber with length of 1.5-3 m is carried out by sequential actuation of the igniter, compounds E and C and breakable calibrated membrane located in the second added inlet chamber; after hydraulic shock there's another holding of the process for 30 minutes; when the chamber with length of 20-50 m is opened combustion of compound A takes place with formation of gases heated up to high temperature at high pressure within treatment range.

Stimulation method of formation fluid influx from well / 2485305
Stimulation method of formation fluid influx from the well consists in lowering to the well of a tubing string. Counter pressure on the productive formation is decreased owing to replacing the liquid column with liquid-gas mixture (LGM) at observance of the required value of depression on the productive formation. Before the tubing string is lowered, its lower end is equipped with a remote subsurface pressure gauge and a filter. The tubing string is lowered to the well so that the filter is located opposite the formation perforation interval; after that, treatment of the bottom-hole zone of the formation is performed using a chemical method with process exposure for reaction. Then, the tubing string is lowered further so that the filter is located below the formation bottom, and into the inter-string space there lowered is a string of flexible tubes (FT) 100 m below the liquid level in the well. The liquid column is replaced in the inter-string space of the well with LGW and lowering of the FT string is continued. When lower end of the filter of the tubing string is reached, lowering of the FT string is stopped; then, stimulation of the formation fluid influx is started by gradual reduction of density of pumped LGM till the required depression on the productive formation, which is controlled as per readings of the remote subsurface pressure gauge, is achieved. After completion of stimulation of the influx from the well there removed is FT string from the inter-string space of the well, and operating equipment is lowered to the well and the well is put into operation.

Stimulation method of formation fluid influx from well / 2485302
Stimulation method of formation fluid influx from a well involves lowering to the well of a tubing string, reduction of counter pressure on a productive formation due to replacement of a fluid column in the well with liquid-gas mixture (LGM) at observance of the required value of depression on the productive formation. Prior to lowering to the well of the tubing string, the latter is equipped in an upward direction with a remote subsurface pressure gauge installed in a plugged container, a filter and a packer. The tubing string is lowered to the well so that the filter can be arranged opposite the formation bottom. The packer is put 5-10 m above the formation roof. Treatment of the bottom-hole zone of the formation is performed by pumping via the tubing string of a hydrocarbon solvent and by its forcing into the formation with process liquid. Process exposure for reaction is performed. At that, during process exposure for 1.5-2 hours, there unpacked is the packer, and in 3-4 cycles in every 0.5 hour, process liquid in the volume of 0.5-0.8 m3 is pumped in turn to the tubing string and to the inter-string space of the well. The packer is put again upon completion of process exposure. Into inner space of the tubing string there lowered is a string of flexible tubes (FT) so that its lower end is on the liquid level in the well. After that, the space on the wellhead is sealed between the tubing string and the string of flexible tubes. Then, with stops in every 200-300 m there lowered is a string of flexible tubes into the tubing string until lower end of the string of flexible tubes reaches the filter. Replacement of well fluid with LGM is performed in inner space of the tubing string during stops and during lowering process of FT in equal LGM volumes.

Method for subsequent development of multisite well / 2483208
Method involves perforation of two productive intervals, lowering to the well of a layout consisting (in an upward direction) of a setting device, a shank, a packer located below upper productive interval, a pipe string with a drain valve on the level of upper productive interval, and on the head with a tee-piece with a cutoff branch and a cutoff branch pipe above the tee-piece, packer setting, swabbing in the pipe string of lower productive formation, build-up of a recovery curve of a level for lower productive formation, evaluation of productivity of lower productive formation; filling of the layout with water after swabbing of lower productive formation through the tap and the tee-piece; waiting till water goes downwards and air upwards; air bleeding through a branch pipe, repetition of operations till the layout is filled with water; lowering to the pipe string and arrangement in the setting device of a cutoff device' creation of pressure in the pipe string and opening of the drain valve' swabbing in the pipe string of upper productive formation; build-up of a recovery curve of the level for upper productive formation; evaluation of productivity of upper productive formation, lifting of the layout out if the well, lowering of a downhole pumping equipment and operation of the well.

Recovering method of working condition of gas-oil production well with horizontal and/or subhorizontal end during operation, and technological complex for method's implementation / 2482268
Recovering method of the working condition of gas-oil production well involves three stages. At the first stage, geophysical measurements of the well parameters are performed, as per which the profile of influx of the investigated section of the well is determined and non-working intervals are identified. At the second stage, flushing of technogenic fluids of the well sections with non-working intervals is performed. At the third stage, check measurements of the well geophysical parameters are performed so that quantitative and qualitative yield characteristics of non-working intervals are determined. Technological complex used for the method's implementation includes two units with a flexible tubing string, one of which includes a geophysical cable for connection and transportation to the well of a geophysical instrument, and the second unit with the flexible tubing string serves for flushing of bottom-hole part of the well. The second unit with the flexible tubing string has the possibility of being connected to the hydraulic diagram of the first unit with the flexible tubing string and to the well flushing equipment.

System and method for extraction of fluid medium from well shaft / 2503794
System for extraction of fluid medium from a certain zone of a well shaft includes a single packer. The packer has a structural layer that expands in the well shaft and includes a lot of drain holes in the expansion zone. An inflatable bottle is located inside the structural layer and a sealing layer is located outside the structural layer. Each drain hole interacts with the sealing layer and the drain element. Method for extraction of fluid medium from the certain zone of the well shaft involves the following stages: envelope of the inflatable bottom with the external structural layer; connection of the fluid medium flow control system to multiple drain holes; arrangement of the drain element on each drain hole. The second method for extraction of fluid medium from the certain zone of the well shaft involves the following stages: construction of a single expanding packer with multiple drain holes; lowering of the single expanding packer into the well shaft; expansion of the packer; removal of filtration crust of the drill mud from the well shaft zone; performance of an action of a pump system.

Garipov packer with electronic instrument (versions) and method of its implementation / 2500879
Packer with electronic instrument includes mandrel with sealing elements, dividing elements between them, movable and fixed elements. The packer is equipped with electronic instrument with a sensor to control leakproof state of sealing elements in process of well operation. According to the first version electronic instrument with a sensor or sensor of electronic instrument is located in leakproof space at permanent pressure between sealing elements. According to the second version electronic instrument with sensor or sensor of electronic instrument is located outside sealing elements or in sealing and dividing elements. The sensor of electronic instrument is connected hydraulically with leakproof space at permanent pressure between sealing elements. Method of packer with electronic instrument operation includes running-in of tubes with the above packer, measurement of parameters and their transfer to the surface. Electronic instrument with sensor or sensor of electronic instrument is installed with possibility of fluid communication with space between sealing elements in order to control leakproof state of sealing elements; at that packing of the packer is made and leakproof space is formed at permanent pressure between sealing elements as in hydraulic chamber. When packer with electronic instrument with sensor is set parameters are measured in the above space.

Packer-anchor equipment for selective treatment of formation / 2499884
Packer-anchor equipment for selective treatment of a formation includes a stock, a sealing element, a housing, an adepter and a valve. On the packer stock there installed is composite sealing element, upper and lower cones, from above and from below of which upper and lower casings are arranged. Upper and lower supports are installed in slots of casings. Upper casing is connected to the housing, and lower casing is connected to the adapter. There is a key in the housing slot. A hydraulic anchor is connected to the lower adapter. A valve body, inside which protective rings with a sealing cuff pressed from below with a nut and a lock nut are installed, is attached to lower part of the hydraulic anchor. A mechanical anchor is attached to the valve lower part. Inside the packer-anchor equipment there is a valve sealing device fixed in the upper adapter of the packer through a support. The valve sealing device consists of a bar, a rod, on which a fastener installed, and a lock nut screwed onto upper part of the device.

Device for in-well bed processing / 2499126
Proposed device comprise packer. The latter comprises the case with shaped slot at outer surface, cartridge with pin and slips and elastic cup. Said pin is fitted in shaped slot to displace therein. Besides, proposed device comprise disconnector. Said disconnector consists of the barrel with top and bottom thread and slide valve. Said slide valve is arranged inside said barrel and connected therewith by cutoff elements. Besides, it has central axial bore, taper bore to receive lock ring, ball valve seat to be thrown down inside the device before processing the second bed, and lower ring. Bottom ring is screwed on disconnector lower thread and is composed of a cover. Cover bottom has inner thread for connection with through packer case and rod rigidly secured thereat at the center. Also, its has axial holes arranged in circle with their capacity exceeding that of slide valve central bore. Said rod is directed toward slide valve and can tightly interact with its central axial bore after ball fit at said seat and axial displacement of slide vale relative to disconnector barrel. Lock ring interacts with annular groove at disconnector barrel lower part. Shaped sleeve at parker case outer surface is composed of transverse and lengthwise grooves arranged perpendicular to each other and interconnected at lengthwise groove bottom.

Packing unit for packer / 2495228
Packing unit for packer contains sealing element and extendable ring installed at one of its butts. Extendable ring is fixed by a pin; it is formed by rows of overlapped external and internal segments. Segments in rows are made as capable of displacement relative to each other. Each external segment is connected to two internal segments. External segment has one dynamic connection with internal segments by a pin and one rigid connection with the other segment by a rivet. There is a groove for pin and a hole for rivet at external segments while at internal segments there is a hole for pin and rivet. The pin is made as a rod with upper and lower heads at its both ends. The upper head can be moved along the groove of external element. The lower head with a part of the rod is imbedded into the sealing element.

Packer equipment for isolating operations in well / 2495227
Drillable packer consists of a mandrel with thread at outside surface, sealing element, bursting liners and cones. Butt of the lower bursting liner is inclined. In the upper part of packer mandrel there is an upper divider in the form of a disc valve. Hydraulic adjustment tool consists of the rod connected to adapter, the upper and lower cylinders. Between the rod and upper cylinder there are driving washers and fixed hub which form several cavities. The upper cylinder and adapter, the lower cylinder and body of the disc valve are connected by shear bolts. Basket with radial overflow holes and radial holes for latches resting on lip of the mandrel lower part is connected to the lower part of adapter. Saddle for a drop ball is fixed to the basket by shear bolts. The basket is connected to end bushing through crossover shoe. Limit ring and the lower divider in the form of centring plug with collar spring are fixed to the end bushing by shear bolts.

Device for segregation of formations or productive stratum of horizontal well into separate areas / 2495226
Device for segregation of formations or productive stratum of a horizontal well into separate areas includes interconnected corrugated longitudinal pipes with encapsulated components located at the areas with less circumscribed circle. The device also includes the upper and lower cylindrical areas. The lower area is equipped with shoe while the lower one is equipped with landing adapter. Encapsulated components are designed as closed components along tube perimetre. End sections of corrugated longitudinal pipes are welded and made as corrugated longitudinal gaged bells with circumscribed diameter bigger or equal to the circumscribed diameter of encapsulated components. Thickness of encapsulated components and distance between them can be adjusted without mutual overlapping in case of extension by rolling device after correction by inner pressure.

Method and device for control of elastomer swelling for purpose of application at bottom hole / 2495225
Device includes swelling core and cover used as a shell for the swelling core. At that cover is made of material that contains a component soluble in the selected fluid and component insoluble in the selected fluid. Method for control of downhole tool includes positioning of the downhole tool in a well bore and impact on swelling device by the selected fluid in order to increase permeability of the cover and to ensure swelling of the swelling core.

Device for plug removal / 2494223
Device for plug removal comprises a tubular jacket, a circular jacket and a piston. A plug is installed in the seat of the tubular jacket. The lower part of the circular jacket under action of the applied force is pressed into the plug material so that the material is ground. The piston is arranged above the circular jacket and acts with the specified force at it during axial displacement by hydraulic pressure. The lower part of the circular jacket has a flange stretching radially inside. As a result of axial displacement of the piston the flange moves radially inside to the plug. There are slots in the wall of the circular jacket.

Packer assembly / 2493353
Packer assembly comprises a positive locator, an anchor, a hydraulic jack, aeration and return valves and a packer. The positive locator is arranged in front of the anchor at no more than 0.7 m. An additional positive locator follows the positive locator in front of the packer at no more than 0.7 m. The positive locator distance is no more than 3 m. The positive locators have centring sleeves with an outer size 9-11 mm more than an outer size of the anchor and 10-16 mm less than an internal diameter of a well.

FIELD: oil and gas industry.

SUBSTANCE: invention relates to oil and gas industry, in particular, to the area of secondary recovery for productive stratum by vacuum. Device for implosive treatment contains a hollow housing with depression chamber and packer included into it. Cover is installed at the housing telescopically and fixed by a shear bolt; the cover is connected from the bottom to a rod with variable section and has a limiter. Limiter can interact with inner protrusion of the housing. At that rod with variable section can interact with overflow opening in the housing. The cover is connected to pipe string from the top. The rod with variable section is hollow and it communicates inner space of the pipe string with depression chamber. At that hollow rod with variable section has conical surface tapering bottom-up and having slope angle of 10-20°. The packer is made as interchangeable metal rings and rubber barrel-type seals.

EFFECT: improving reliability and efficiency of the device operation and excluding contamination of the wellhead site with products of implosive treatment.

2 dwg

Field : oil producing industry, in particular to the secondary effects of vacuum for the reservoir.

A device for formation treatment (patent RU №2191897, IPC 21 43/25, 21 43/18 publ. 27.10.2002 in Bulletin. №30), which contains a hollow body with constituent depression camera and packer, wherein on the housing telescopically installed and fixed shear screw cap, combined with a rope, and with a clamp and rod with variable cross section, which is installed with the possibility of interaction with hole of the case, on the cylindrical surface of the cap placed packer and wedge, with the outer cone wedge interacts with dies, which are connected with directing the housing with the possibility of radial movement, and the axial displacement of the packer regarding the cover is limited to one side wedge, and with another - lock lid, the lid also has a guard, installed with the possibility of interaction with the protrusion of the corps, and the emphasis, installed with the possibility of interaction with the wedge, following the guide of the body there are reception holes.

The disadvantages of this device are:

- first, the complexity of the design, due to the large number of units and parts die, Klin);

- secondly, after lifting the unit at the mouth of the assort camera for clearing it of products formation treatment right at the mouth of the well, the polluted wellhead area well and reduced production culture;

- low reliability of fixation dice device descent on the rope on the walls of the well, due to the small weight of the device (up to 5 kN) and hole in the bottomhole formation zone, die slip down the borehole walls and the device is not fixed in a well;

- fourth, the low efficiency of work, which is connected with the fact that hollow rod when filling depression cameras has a permanent ring gap that do not provide for gradual and uniform filling of depression cameras products cleaning of the reservoir, so after pressure equalization in the depression chambers and space well in the bottomhole formation zone are not extracted pollution.

Also a device for formation treatment (patent RU №2195550, IPC 21 43/25, 21 43/18 publ. 27.12.2002 in Bulletin. №36), which contains a hollow body with constituent depression camera and packer, while the housing telescopically installed and fixed shear screw cap, combined with a rope with latch, more depression camera and a hollow rod with variable cross section, which connects camera housing with extra depression camera and installed with the possibility of interaction with bore the body cylindrical surface of the cover is placed packer and wedge, with the outer cone wedge interacts with dies, which are connected with directing the housing with the possibility of radial movement, and the axial displacement of the packer regarding the cover is limited to one side wedge, and on the other clamp of a cover, a hollow rod has a guard, installed with the possibility of interaction with the protrusion of the corps, and the emphasis, installed with the possibility of interaction with the wedge, following the guide of the body there are reception holes.

The disadvantages of this device are:

- first, the complexity of the design, due to the large number of units and parts die, Klin);

- secondly, after lifting the unit on the mouth of the assort camera for clearing it of products formation treatment right at the mouth of the well, the polluted wellhead area well and reduced production culture;

- low reliability of fixation dice device descent on the rope on the walls of the well, due to the small weight of the device (up to 5 kN) and hole in the bottomhole formation zone, die glide down the borehole walls and the device is not fixed in a well;

The closest to the technical nature and the achieved result is a device for formation treatment (patent RU №2194851, IPC 21 43/25, 21 43/18 publ. 20.12.2002 in Bulletin. №35), which contains a hollow body with constituent depression camera and packer, while the housing telescopically installed and fixed shear screw cap, combined with a rope with a rod with variable cross section, with a limiter that is installed with the possibility of interaction with internal ledge housing, the rod with variable cross-section is installed with the possibility of interaction with hole body, and on the cylindrical surface of the body is placed packer, below which are placed in foster holes, and the axial displacement of the packer relative to the housing with one hand limited focus of the body, and on the other - cover.

The disadvantages of this device are:

- first, the low reliability of work related to the low probability of destruction screw under the influence of excessive pressure when not manifold and not a layer, and when unloading the downhole device destruction screw, also is unlikely due to low weight the device (up to 5 kN), is also unlikely sealing packer in a well due to the drop in pressure in the borehole;

- secondly, the low efficiency of work, which is connected with the fact that hollow rod when filling depression cameras has a permanent annular gap, which leads to a sharp actuation device and provides for gradual and uniform pull pollution of remote regions of the bottomhole formation zone and the filling of depression camera, so after pressure equalization in the depression chambers and space wells of pollution remain lessons in the bottomhole formation zone;

- third, after lifting the unit at the mouth of the assort camera for clearing it of products formation treatment right at the mouth of the well, the polluted wellhead area well and reduced production culture.

The object of the invention is to increase the reliability and efficiency of the device, as well as the elimination of pollution of the mouth with the products of formation treatment and improving the culture of production.

The problem is solved by the device for formation treatment contains a hollow body with constituent depression camera and packer, on the housing telescopically installed and fixed shear screw cap is connected to the bottom rod of variable cross-section, having a limiter that is installed with the possibility of interaction with internal ledge of the case, the stem variable cross-section is installed with the possibility of interaction with hole body, and on the cylindrical surface of the body is placed packer, below which are placed in foster holes, and the axial displacement of the packer relative to the housing with one hand limited focus of the body, and on the other - cover,

What is new is the top cover is connected with column pipes, and the rod of variable cross-section is hollow and informs the inner space of the pipe string with depression camera, with a hollow rod with variable cross-section is equipped with a cone surface, narrowing upwards, and executed with the angle of inclination 10-20°, with the bottom of the hollow body is equipped with a shank with a check valve, flowing from the bottom up, the packer is made in the form of alternating metal rings and barrel-shaped rubber seals, with rubber sealing barrel-shaped packer have the opportunity to radial expansion and interaction with the hermetic inner wall of the well under the weight of the pipe string after another device on the bottom of a well.

Figure 1 schematically shows a device Assembly before processing layer.

Figure 2 schematically shows the device during the cleaning products formation treatment.

Device for stimulation is (see figure 1) from the hollow body 1 with constituent depression camera 2 and the packer 3. On the housing 1 telescopically installed and fixed shear screw 4 cover 5, connected to the bottom rod of a variable section 6 having limiter 7, which has the ability to interact with the inner ledge 8 case 1. In the upper part of the cover is installed whipped valve 9.

The cylindrical surface of the body 1 is placed packer 3, below which there are adoptive 10 holes, which can be any cross-section. The axial displacement of the packer relative to the housing 3 1 on one side is limited emphasis 11 of the housing 1 and on the other cover 5.

Cover top 5 is connected with column pipe 12. Rod with variable cross section 6 is hollow and informs the internal space of the 13 pillars of pipes 12 with depression camera 2.

Hollow rod with variable cross section 6 is equipped with conical surface 14, narrowing upwards, and executed with the angle of inclination: a=10-20 degrees that allows to change the flow passage transfer holes 15 housing 1 in the course of work.

Rod with variable cross section 6 is installed with the possibility of interaction with opening of 10 case 1.

From the bottom of the hollow body 1 is equipped shank 16 valve 17, flowing from the bottom up.

The device down on a column pipes 12 (see figure 1) up to the stop the lower end of the shank 16 in the slaughter of 21 wells 20. In the process of the descent of the tubing column 12 (see figure 1) non-return valve 17 is closed, which does not allow filled depression camera 2 borehole liquid, resulting in depression camera 2 and in the inner space of 13 tubing column 2 remains atmospheric pressure.

Then raise your device over the slaughter of 21 wells 20 1-2 meters and record the weight of the device, for example, 140 kN, with the indicator of the weight installed at the wellhead 20.

Next partially unloaded with column pipes 12 on the slaughter of 21 wells, for example 4-5 kN, is the destruction 4 screws and cover 5 in conjunction with the hollow rod with variable cross section 6 and valve 9 under the weight of the column of pipes 12 move down relative to the stationary case 1, the slaughter of 21 wells 20 through the shank 16, packer 3 starts to shrink, i.e. rubber sealing barrel-shaped 19 (see figure 2) packer 3 radially expand and come into the tight interaction with the inner wall of 20 wells.

The ability to control the destruction of screws 4 and actuation of the packer 3 on the weight indicator allows to raise reliability of the device and guarantee the sequence of technological operations in the process of operation of the device.

Simultaneously with this rod with variable cross section 6 large cross section - S passes through the seal 23 transfer holes 15 (see figure 1) and hosted a cone-14 surface opposite the internal hanging 8 case 1. As a result, some offer 15 hole and depressional camera 2, which originally atmospheric pressure gradually and evenly without sharp jerks begins to fill with fluid from the annulus 25 20 wells through receiving 10 holes, thereby creating impact on the formation of 26 through perforation intervals 27.

Cone surface 14, tapering from the bottom up and executed with the angle of inclination: a=10-20°determined empirically, allows you to smoothly change the bandwidth transfer holes 15 that provides the most effective processing of reservoir 26, i.e. evenly pull products pollution of remote regions of the bottomhole formation zone 26 through the annular space 25 20 wells in camera 2 devices.

As the filling of depression camera 2 liquid and products formation treatment continue to unload column pipes 12 to zero, i.e. to the full discharge 14 kN, with rubber sealing barrel-shaped 19 (see figure 2) packer 3 continue to radially expand and to the inner wall of wells 20 and the cone surface of 14 (see figures 1 and 2) hollow rod with variable cross section 6 drops down until the opposite seal 23 fail smaller section - S 1 hollow rod with variable cross section 6, i.e. hole opens on 15 maximum bandwidth.

Pressure depression camera 2 and line space of 25 wells 20 aligned.

Then lift the column pipes 12 N=4 to 5 meters, the device returns to its original position, i.e. rod with variable cross section 6 with a cap of 5 and valve 9 rise up, and the rod with variable cross section 6 large cross section - S is placed against the seal 23 (see figure 2) and seals 15 hole (see figure 1), and barrel-shaped rubber seals 19 (see figure 2) packer 3 depart from the inner wall of wells 20 and radial compressed inside.

Next backwashing, for example in volume of 20 wells, i.e. the uploading process fluid, such as fresh water, density of 1000 kg/m 3 , wells 20 in the annular space 25 through the non-return valve 17, which opens under the pressure of the process liquid injection, for example 9 of depression camera 2 and the internal 13 of the tubing column 12 remove the products of processing of reservoir 26 in capacity (figures 1 and 2 is not shown), once flushing check valve 17 is closed.

Conducting reverse rinsing disposed of products formation treatment directly in capacity, that allows to exclude the dismantling of depression camera for clearing it of products formation treatment and avoid contamination of the near-site wells, increase of culture of manufacture.

Forth in the internal space of the 13 pillars of pipes 12 dropping cargo (figures 1 and 2 is not shown), such as a segment of a hollow rod with a diameter of 22 mm and a length of 2 meters. In the result of which whipped valve 9 (see figure 2) is destroyed and the inner space of 25 wells 20 reported inner space 13 of the tubing column 2. Next produce lift column pipes 12 with the device at the wellhead 20, in the process of lifting pipe string, 12 process fluid of the inner space 13 flows into the annulus 25 20 wells, therefore, is excluded overflow fluid from the tubing column 12 when her rise to the surface 20 and pollution in borehole territory. Then descend into the well 20 operational equipment and continue its operation.

Design of the device allows to increase the reliability and efficiency of the device, and also to eliminate pollution of the mouth with the products of formation treatment and improve the culture of production for the work.

Device for formation treatment contains a hollow body with constituent depression camera and packer, on the housing telescopically installed and fixed shear screw cap is connected to the bottom rod of variable cross-section, having a limiter that is installed with the possibility of interaction with inner ledge of the case, the stem variable cross-section is installed with the possibility of interaction with hole body, and on the cylindrical surface of the body is placed packer, below which are placed in foster holes, and the axial displacement of the packer relative to the housing with one hand limited focus of the body, and on the other - cover, wherein the top cover is connected with column pipes, and the rod of variable cross-section is hollow and informs the inner space of the pipe string with depression camera, with a hollow rod with variable cross-section is equipped with a cone surface, narrowing upwards, and executed with the angle of inclination 10-20°, with the bottom of the hollow body is equipped with a shank with a check valve, flowing from the bottom up, the packer is made in the form of alternating metal rings and barrel-shaped rubber seals, with rubber sealing barrel-shaped packer have the opportunity to radial expansion and interaction with the hermetic inner wall of the well under the weight of the pipe string after another device on the bottom of a well.