SA111320192B1 - Expandable Ball Seat - Google Patents

Abstract

Abstract: The present invention relates to a ball drop activated device, in which a ball seat (4) is centrally and axially slidably disposed within an outer sleeve (1) having a first internal cylindrical surface, in which the ball seat ( 4) On at least one of the radially extending lugs (6), which extends in a first position diagonally inward from the internal cylindrical surface, thus determining a first diameter of the ball seat less than the diameter of the drop ball. The sleeve (1) has at least one groove (7) in its inner surface, and the lugs (6) can be accommodated in the groove (7), so a second ball-base diameter of at least equal to that of the drop ball (9) is specified ).

Description

ov - Expandable ball seat Full Description BACKGROUND The present invention relates to an expandable ball seat for use in subterranean wells ¢ and in particular wells used for the production of hydrocarbons Subterranean formations. oo hydrocarbon production; This oil and/or gas ¢ from the subterranean aquifers “reservoirs” is provided by a blister that extends through several layers of rock in a rock ina formation Formation is provided. The sale of the well is designed by drilling a free borehole, which extends at a distance through the rocks, by inserting a steel casing into the wellbore and cementing it to the formation of Jails. cement it to the formation in valve through the annulus formed by the formation and casing before the cement is left to harden. The next section in the formation is drilled into the existing casing extension. Then the liner is suspended outside by means of a liner hanger; and fill it with composition. This process is repeated until a well comprising 1 of sections with decreasing diameters reaches the required depth. Typically one or more formation layers containing hydrocarbons are separated; Typically, layers produced by rocks that do not carry oil or gas. to access the formation fluids; can fm

casing penetration at depths corresponding to the productive layers; The formation may be hydraulically fractured to facilitate the flow of fluid from the two formations into the production well. Horizontal wells can also branch outward from the vertical production well, by «production well, several kilometers away, through a layer containing hydrocarbons. A production pipe shall be supplied inside the casing or liner; The completed ill can be divided into several production areas using packers. Valves 5 control the flow of fluid during plastering. Other valves control the flow of fluid in a section of the production pipeline corresponding to the production area. in operation; The fluid flowing from several areas at different rates 0 can be mixed and carried up the production pipe to the surface. to increase the amount and/or rate at which hydrocarbons are produced from an area; Various chemicals can be injected into the formation. The chemical could be water; brine; acids, solvents and al surfactants and may be injected through a production blister” or through one or more injection wells 0 which may be supplied at a distance from the production J. Thus, a typical Jia oil of gas may include one or more production wells; The absence of injection wells or the presence of many. and in some cases; J injection can for example inject water or gas in many areas to increase the pressure in the tank. Various additives can also be injected to reduce the viscosity of the fluid in a specific area. These methods are collectively known as the "induction" area; The purpose of Lie 0 is to boost production from the area. Certain methods of inducing an area are not part of the present invention;

-os and are therefore not described in further detail in this disclosure. However. It should be recognized that providing the largest number of injection points in the injection area can assist in distributing fluids and/or chemical additives in the area in a convenient and economical manner in pe. production. For example; If water is injected through an injection bur and separates through the formation at 0 certain points along the horizontal branch of the weir and the water content of the fluid produced can rapidly exceed a predetermined level and result in a decision to close that particular branch. However, gas 5 could be left in the formation outside the water penetration zone. Oil Large pockets of oil exist to be able to isolate strip or packers and valves and thus; Valves can supply a particular area in a horizontal well at a later time when this situation occurs. On the other hand; The cost of 0 valves and the time required to open a large number of valves when an area is in production can limit the number of sectors or areas per branch. In turn, this may result in relatively large “idle” areas containing hydrocarbons that cannot be recovered. As indicated above; Various mechanical devices are used during design, completion and production; for example lining hangers; Gaskets and valves of different sizes and designs. One of the 1 "dropping" that is done BS by using i multiple ways to operate the mechanical device consists in dropping or pumping it with the fluid down into the blisters until it settles on the base of the ball. then; Pressure acts on the equipment and causes the relative motion between two parts; This hydraulic pressure activates the device. Devices activated by drop balls or fea

Other similar engines are relatively inexpensive and do not require costly production cuts; Such as when a string operator or tool must be run into the well the terms are used; “drop ball” and “ball seat BS”; Activating devices in the well hydraulically © . However; It should be understood that other equivalent items used for the same purpose are also taken into account. For example; A needle plug may be inserted into the flow of fluid immediately prior to cementation when a liner is cemented with the formation during the completion of the blisters. The needle plug has a cylindrical body to separate the cement from the fluid below; It typically has a rounded conical nose similar to a drop ball. When the apy is seat connected to the valve the fluid circulating through the liner is closed; Hydraulic pressure builds up behind the needle. When the pressure reaches a predetermined level, the shear pins or the like separate; which originally prevented relative movement between the inner and outer sleeves of the valve; breaks. Then the sliding sleeve slides downwards and opens the pleaa – thus allowing the cement to enter the ring between the liner and the formation. after ve use»; The needle can be broken conventionally; For example by a drill bit when the next section of a blister is being designed. In a similar way; A drop ball can be used for the same purpose. Thus, the needle serves the same function as a drop ball, resting on a base; Thus closing the fluid circulation so that hydraulic pressure can act on the device. A series of drop ball can be used to operate valves and other devices at 0 different times and locations. For example; A series of dropballs can be used to trigger the $v 0 chain

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From the valves of the valves in different areas to open or close the production from different areas in the process of producing blister. traditionally; This is done by reducing the diameters of the ball bases while increasing the depth and using balls of different sizes. then; A drop ball of a given diameter bypasses all bases with larger diameters and rests on the first base with a diameter smaller than the diameter of the ball. Once the ball has oo closed the sway hydraulic pressure builds up behind it (Says can use it to activate Glen] for example by breaking the shear pin and/or providing some relative motion between the

parts inside the device. However; There is a limit to the number of different ball sizes that can be used in a blister. if; For example; The diameters of two spheres are very close to each other; Even a small piece can cause

0 pieces of debris, sand or gravel resting the ball on a base with a diameter slightly larger than the intended base; Jills unintentionally activated the wrong device. Therefore, there must be a minimum difference in diameter between the drop balls to be used in a particular application. This also limits the number of pieces of equipment that can be operated by conventional drop balls or benches in certain pimples. stereotyped; About 10 bases or less ball bases can be used in one well for the reason discussed above.

1 The size and/or depth of modern reservoirs are increasing; Using drop balls in a traditional way becomes impractical. For example JU the blisters can extend 0005 m or more vertically and/or horizontally. Using a maximum of 10 drop balls of different sizes; The average distance between devices that are activated by a drop ball is 100 meters or more. This may exceed the thickness of the production area.

OY: at least one valve should control the flow of fluid from each 5 m zone.

I

production; Less than 71 spool valves are available for use in horizontal wells.

Branching into the production area(s).

In some cases it may be useful or necessary to provide more than one valve to control the flow of a fluid

formation in the cz WY pipe) which reduces the number of spool-0-activated valves available for further regions and/or horizontal wells further afield. soon becomes

Using equipment powered by other means is expensive as electric motors are needed

handling temperatures and pressures in deep wells; Hydraulic bushings get bigger etc.

and then; It is useful to provide a system where one of the dropped balls can unlock a different number

A specific number of valves in a vertical or horizontal well. Valves in a vertical or horizontal well

0 if you find a way to open an unlimited number of valves 98 by gaa) drop balls for example in one of the production areas and/or a horizontal branch; A large number of valves can be installed inexpensively. This can work so that when an area is stimulated such that the fluid can be injected through a large number of injection points and the formation fluid is drawn into the output pipe through an arbitrary number of valves.

Thus the main objective of the present invention is to provide a device capable of activating an arbitrary number of 0's only. Bigger than the 0 valves in particular the Jeg because each one has Alysha injections. It is also possible to increase the number of valves in a horizontal well a in only one. For example; If the drop ball breaks open quickly using 38 drops (Say

0 later; Say Closes a relatively small area; This limits the "dead zone" to 8.68

A pocket of hydrated carbonates that cannot be returned from the formation. This closing can be done by Jie for certain valves using known methods in coil eg by providing valves with standard fittings of conventional tools; running a tool into the blister with a coiled tube; smooth line Blister tractor or shal run etc. 0 General description of the invention The main objective is achieved by providing a device that works by means of a drop ball, where the base of the drop ball is placed centrally and axially in an ALG manner to slide in an outer sleeve that includes an inner primary cylindrical face; where the base has at least one outward-facing lugs; Sly when adjacent to the inner initial cylindrical face extends diagonally inwards and defines the first 0 diameter of the base of a sphere less than the diameter of the first BEN sphere; The siceve shall have at least one groove in its inner surface; and the handle when it is received in the groove; Determines a second diameter of the base that is at least equal to the diameter of the drop ball. Whereas the base diameter increases to a second base diameter “the drop ball of” passes a dart or “(similar object) and continues to the next BS operated device where the process is repeated. A ball may be used to actuate an unlimited number of devices having Alles base diameters eg all valves or devices of a certain type in an area.However, different sized balls can conveniently be supplied as given in the preceding art. In the present invention, a single 9S (Say) is used to open an indefinite number of valves in a production area, while the next larger ball can be used to operate any number of devices in the production area described above. © Thus as many valves as desired may be installed Or other devices that operate with drop ball valves, which greatly reduces the number of valves [gri i] in the drop ball area

Costs that are operated by other means and/or improve production from an area.

And in another feature; The present invention provides a method of using the device.

And in another feature as well; The present invention includes a method for activating and deactivating an unlimited number of oo drop ball powered devices in Ju using 38 single drop ball

Brief description of the drawings

The invention is fully explained in the following detailed description with reference to the attached drawings indicating

in which similar numbers are divided into similar or equivalent parts; And in it:

Figure (1) is a schematic view of a pustule that includes several areas and branches.

0 Figures (5-7) show a valve that is activated with a drop ball using the invention in several stages during activation; Figure (6) shows a device on the shapes (o=Y) in the (Aled) phase, where the BEN ball is released, and the figures (VY-Y) show the different details of the device. Detailed description:

0 Figure 1 is a schematic view of a cross-section of a water system used in the production of hydrocriones, i.e. oil and/or gas; From a 0 5001600827 reservoir a hole or wellbore is drilled through several layers of rock in the rockina formation

0 0 e

1.

format is provided. In Figure 1, two layers 0 and Yer are shown. An olaaiuly wellbore Salt pit is lined with an oY steel casing that is cemented to the formation. In Fig. 1 layers 0010 and 000 contain hydrocarbons; It can be separated by layers of rocks that do not contain oil or natural gas. Casing 011 can be perforated at depths corresponding to the producing layers 001 and (Yoo) and hydraulic fracturing can be used to produce and open cracks in the formation to facilitate the flow of fluid from the formation into the production well. Wells Yer can also branch Yeo horizontal wells!

Through the layer 0000 001 containing hydrocarbons

casing or inside the casing or lining of 011 production pipe and 0 packers are typically provided by dividing the completed well into several production areas using shims Sey and 01 liner in a flow of 1c; And 1017 a-c... in the form of - 101 valves (not shown). Controls valves to the portion of the production pipe corresponding to zones 00 and 1001 of the flow of fluid configuration. Valves are generally of a different design or type; For example intake valves

1 Sliding sleeve valves, butterfly valves, and ball valves have different sizes and designs used for different purposes as is known in the art. when running; The fluid flowing from multiple regions (LS) shown by arrows (VY) can be mixed at different rates and transferred in a production pipe to the surface to increase the quantity and/or rate at which production is carried out. Hydrocarbons from the hydrocarbons arc

produced from a zone 0 ¢ One or more 001 injection wells can be supplied at .

11 — - distance from the production well. An injection blister inserts fluid into one or more areas; For example, to increase the pressure in the reservoir or to provide some chemical composition” and it can be done by the Ailes method for the production well. A typical oil or gas field may include one or more production wells and no or more HUY injection wells. As del mentioned, different devices Jia sliding sleeve 5" valves, butterfly valves with disc and ball valves of different sizes and designs can be used to control fluid flow and other purposes. Conveniently; It is set that Jad term Sle works with a ball "on these devices byes at Lhd hydraulically using a drop ball; dart or similar device 0 All of these devices have a base on which the ball can be thrown; needle or similar device. Figure Y showing ples a sliding quantum using a preferred embodiment § of a ball seat base according to the invention. The sliding sleeve valve opens when holes in the sleeves are aligned and closed when the holes are misaligned. “Sully The valve can be actuated by simple axial displacement; It is well laid out for illustrative purposes. However; It should be recognized that 0 The invention can be used with any device that is driven by a pulley. The apparatus of Fig. 7 comprises an outer sleeve 1 having an inner surface having two parts: an internal cylindrical surface Jah and 1 annular groove of larger diameter Sus modified to receive one or SS of the jugs 1 Tugs As shown lal and a sliding sleeve is placed? concentrically within Ads within the outer sleeve .1 0 and the sliding sleeve 7 is able to slide axially on the inner face of the sleeve (fo) $v

- 11 -

Is it attached to a cage? To implement the ball seat rule as shown in Figure 01 below. The special valve is kept in the form of ? in a normally closed position during valve placement in a blister; And it is designed to be done

Open it when activated. Another model can, of course, be held open during installation; And it is designed

to be closed when activated. Either way; Elements can be joined with shear bolts that are designed to be

© Broken when a predetermined force is applied to it in Figure oF The ball seat cage 4 is held in the inner sleeve * of LY shear pins Shear pins include ? on adjacent heads in the inner shoulder over the outer bushing; And thus trapping the inner sleeve? in Adal) external 1 until an activation force is used. The activation force is applied when the ball 9 rests on the base and blocks the flow of fluid axially along the valve. Then after that hydraulic pressure builds up behind the ball; to provide sufficient force to break the WY shear pins. Cus a drop ball 4 rests on the base. The base is provided with visible fingers on the cage 4 which is pressed diagonally inwards by means of a 1:88 lug 6 when the lug adjoins the inner cylindrical surface of the outer sleeve 1. In Figure oF the inner Adsl moves. inner 0 ©1880 ? For the outer sleeve ¢ so that the shear pins can be pushed diagonally inside the shear pins can be pushed radially inwards and using the retaining heads out of the way ¢ is the inner sleeve allowed? 1 allowed to slide axially within the outer sleeve to the position shown in Fig. 4. This first firing mechanism is illustrated by the heads of 0 cotton the ? which exceeds a small shoulder on the inner face of the outer face of

6.0

tuck the outer sleeve give 1. however; It should be recognized that shear bolts may provide a first firing mechanism in another embodiment. In fig. of the cage 4 with the ball (3) pulls the inner sleeve ? along the outer sleeve (1). The lugs are 1 lugs at the 0 axial position of the annular groove. axial position of an annular groove 7 with an extended diameter in the AT model the lugs 1 could break at this point or move outwards and into the groove L and thus release the ball 4. However; in the model The 1 lugs are also prevented from extending into the WV groove and this can be done in several ways, for example by providing © stops between the 1 fingers and the outer sleeve « . 0 thus preventing the fingers from flexing outwards diagonally.This prevents the 1 tugs from extending into the groove until the Lypae inner sleeve is moved after the ©stoppers as shown in Figure 8. Alternatively, the lugs can be prevented from extending in the V-groove by providing a breakable band around the distal ends of the fingers 1? shown as .01 and so on. The base of the ball also has a smaller diameter 0 and this also allows the build-up of sia hydraulic pressure 1 to be The forces acting on the ball and the base are sufficient to activate a second release mechanism, which may be appropriate to ensure a predetermined minimum force required to ensure proper operation of the device. This second firing mechanism could be a shear bolt; and scope breakable lugs or other firing mechanisms known in the art. And so in the present ideal; Shear pins can be designed to be broken with a force that is guaranteed to pull the 0 slide bushing valve fully open. about 2

1 - By means of a second firing mechanism, inner sleeve, in fig. ©; alfalfa is released; from the inner bushing, for example, by broken shear bolts? The ¢ second release mechanism that connects these stoppers moves at the base; also dimensionally until it was stopped by plugs in an alternative form can .01 or more specifically the £0 ring in the form of the point the end of the cage to the 1 lugs now; The A-lugs can be clamped to prevent the cage from raveling with a shoulder _0

NV diagonally outward into the groove In Figure 1 the lugs 6 are compressed diagonally outward into the groove ¥ provided on the inner surface. This extends the base of the ball to a diameter where it no longer holds the ball 9. 1. is done for the outer bushing. This is indicated by the 9 ball in a dimensional position; ie to the right in the figures; From cage 4. Ball 4 can continue to the next device; which of course may have the same diameter on base 0 as previously disclosed. Jie According to the invention; An all seat by supplying a series of valves of other devices with a ball base can use a single ball in this manner to actuate an unlimited number of devices. It should be understood that the slip sleeve valve model is for representation only. Another application of the ball rule according to the invention may be located within a disc or ball valve; In which a rotary motion is used instead of 0 to wake the device. To convey the linear motion of the projection ball clic, the previously detected linear motion is normal; A pair of spiral shoulders can be provided on the inner and outer sleeves. When fired the ol) helical shoulders hap the base by means of a first firing mechanism; base moving; until then; Hydraulic pressure behind the drop ball is allowed to build up sufficiently to ensure relative rotation between the bushings. This rotation can be used to rotate a circular plate in © 5m

and 1 - a disc or ball throttle valve in a spool valve. The second firing mechanism can be aligned; shown as del as a broken shear pin; Also equally diagonally biased are tines or another method known in art. The purpose of firing mechanisms is simply to ensure that sufficient force is available to properly operate the device prior to the next step in operating a device or before the drop poke is also dimensionally fired. Fig. 1 shows a generalized outer sleeve 1 no holes are shown in the sleeve to show that the ball base of the invention can be used in any pulley-operated device; Not only in a slide bushing valve. The outer sleeve 1 may have a standard thread at both ends for insertion into a tubular chain such as a liner or casing; before being inserted into the wellbore 0 as part of the tubular chain. Significant features of the present invention are that its inner surface has one or more grooves 1 for receiving tugs 3 as discussed with reference to Figs 1 -1. Figure A shows an inner sleeve for a sliding valve » such as that discussed above. The bushing comprises a cylindrical main portion (4 Ve) radially extending ports 77. One end has an end part 1" having an extended radius. The shoulder formed between the cylinder main and terminal part 11 stops the sleeve ?from moving dimensionalally as it attaches to the corresponding shoulder on the inner face of the outer casing. This can be used to activate the first firing mechanism mentioned above if relative axial movement is allowed between the cage adil) ¢ And the sleeve, XY sleeve, L.L.C

- 1 + is used to illustrate the first and second release mechanisms in the description opin Figure 4 shows a model of the tapered head of the TY screw with reference to the figures The asl screw is aligned in first release mechanism The ¥ pin shown in Figure 4 is diagonally outward. When the tapered face of the head is attached to the shoulder on the surface, for example, the inner asf force of the outer bushing; Is the screw pressed? diagonally inward vs. oo the tapered face can be adjusted and aligned to provide a first firing mechanism to fire spring force clearly; Similar release mechanisms can be used in Cage 0; When a first force or pressure is achieved image biased spring clamps or similar devices to implement the release mechanism. It should also be realized that when the shear nail provides? launch mechanism in the above examples; Some models may not include a trigger. Other models may include a firing mechanism. second release mechanism 0 lugs second release mechanism; eg biased stud or lug parallel to each other; and linked with ring 40 showing a cage; It consists of a number of 01 fingers in the shape of a ball, when using the cage; A ball base 0 is supplied at one end. The ring is 0 - inside the cage against the ring £0 and the fingers can be inflexible; For example seat when the fingers are folded inward. In this case Asal consisting of a material subjected to a deformation process of 1 1 lugs can provide the force required to re-bend part or all of the resistance required to block the lugs when the cage is not held; so far by the plugs of Fig. 17 entering the groove instead; The fingers can be flexible and provide a diagonally directed force A or shoulder © stoppers in this case; The position is in Figure E 1. Tugs outward when pressed by the lugs 17. The flexible fingers are immediately snapped outward; To transfer the lugs 6 to the groove Al short 0

- 1 “with ring 560 by means of hinges” and providing the fingers with an alignment 41. Another alternative is spring binding of the fingers; And holding loops, etc., as required by the application

There is a space between the rings (of) so that opposite ends of ring 466 can be compressed diagonally inward to form the base of the Jal ball seat; as described above. Lugs extending 0 diagonally (not shown in Fig. Jie “0 lugs 6 above” are a convenient method for pressing the fingers diagonally inward). The distal or distal ends of the digits Tae 41 can be compressed to form a continuous ring £Y ; The ball base is determined by the inner diameter of the EY ring and the breakable band can be provided around the ring; To prevent the lugs 6 from snapping into the groove A until the lower limit

A specific force is available.

0 in Figure 01; The space between sections of ring 47 is shown to be too narrow for illustrative purposes. However; It should be understood that the space between the segments of the EY ring could be wider; such that the inner lal) of the continuum forms ?; The base of a ball seat has the smallest diameter. In this current one type of cage can be used; For several ball diameters from this lower diameter to the diameter of the ring £1 simply by supplying lugs 1 of different lengths.

Ve and the external housing Jabs cage is typically held until released by the release mechanism. The holes 400 in the 460 ring are configured to the bottom of the screw ? shown in Figure 1 thus showing that the cage is released; from the sleeve sleeve? With a second release mechanism 66004 _of the above model. By the nature of the Js shear bolts are only one convenient release mechanism; the cage can be fitted with elements other than holes (0£) to fit another 0 release mechanism if required.

11 JSS shows a cylindrical stopper © having an outer diameter slightly less than the space between the fingers and rings and 47 shown in Fig. 01. The main function of the stoppers © is to prevent cage 4 from moving a distance dimension when the valve is open. Instead of that; Shoulder A can be provided for the same purpose.

M Fig. 11 shows a lug 1 being used in the preferred embodiment to press a finger 1 ? diagonally inward when placed for example between the outer circumference of the £Y ring and the inner surface of the oy bushing and thus prevent | for 1 finger of | To move outward until lug 8 1 reaches groove A. The 6 lugs of different lengths can be used to provide bases with different AE diameters.

0 in another attribute; The invention includes a method for activating an indefinite number of drop ball operated devices in a pipeline; It includes the following steps: - Inserting the drop ball into a tubular string that includes at least one device that can be activated and releasing the ball after activation - Monitoring and controlling the pressure " and Ne - Determining (pa ) Activate and launch the drop ball from an unlimited number of devices. The device suitable for this method is that previously described in which hydraulic pressure is the only means required to operate an indefinite number of devices. pressure can be monitored; Or its equivalent such as a load to rotate a pump to determine a point in time when the drop ball (4) reaches 5S at the base of the ball seat – at this time (Sa) an increased pressure is detected. At fae

and 1 - dsl a pump pressure may be added to the hydraulic pressure exerted by the column of fluid behind the drop ball to more fully actuate one or more of the release mechanisms of the devices as described above 0 and likewise; A drop in pressure or pump load can indicate that the 38 projection has left the machine; It no longer blocks the flow of fluid in 0's tubular string . These steps can be repeated until all devices are powered on. Referring to the introductory part of the present disclosure; It is helpful to divide the pustule into several areas; Each region includes several devices. With a previously disclosed device it can be easily seen that several groups of devices can be provided and each group is powered by one 56 Ll drop ball; Each group can be powered by a drop ball of a different size 0 from the drop ball of the other group 0 by installing a group of smaller drop ball-operable devices away from the surface in a vertical or horizontal branch; This group of devices is the first to be activated. This matches the normal production method; that; is led for example; Anticipating an offshore front from an injection blister Reach out to the furthest part of the production well SA 0 Once production from a remote or deep part of the IL drops below a predetermined level the present invention can be used to open a less distant section of A containing a number A device that operates as a drop ball using a single drop ball. This obviously saves time significantly unless intervention is required. and where then the invention was disclosed by reference to a preferred embodiment; It should be understood that a number of 0 modifications may be made without departing from the scope specified in the accompanying safeguards.

Claims (1)

SARLA PROTECTION 1-1 An activated device for dropping a ball volt 0 includes and can be activated by ? Relative movement between the inner sleeve (1) and the outer sleeve TF (1); and the (Y) inner sleeve retaining a ball seat (4 ) E and is actuated by projecting BS (9) and is joint and axially sliding and is positioned within the outer sleeve (1) having a first internal cylindrical surface « . Y where the ball seat (;) includes a number/set of fingers (41) which are attached to a (t+) ring A at one of the cabal! where each finger (£) extends in a manner Axial for the far side or AYA which engages in the direction of the radius from the extending lug (1); which rests the Yo in the first position on the first surface of the internal cylindrical surface 1 and the lugs (V) lugs 1 of the fingers (£1) and thus sets the radius of the BS seat to be less than the radius 1 of the drop ball (4(¢ 0") since the outer quantum bushing is 1) ( outer sleeve comprising at least one groove (V) 0 in the internal surface and loops (1) configured to be moved or received within the Ja at least one ( ) is mentioned in the tan position and thus defines the tabs (1) of the 1 fingers (1); the radius of a second ball seat is at least the same size as that of a falling ball VY (4) where the ball seat (£) Retained in the (V) outer sleeve by a VA first release mechanism configured to release the reel seat (£) and inner sleeve (Y) inner sleeve from the outer sleeve (1) and when hydraulic pressure operates Preset hydraulic pressure first or click on the 0 drop ball (1) and then the ball seat (£) and inner sleeve nner sleeve (1) pulled 71 or sliding along the outer sleeve (1) along the outer sleeve with the use of faa hydraulic pressure hydraulic pressure YY preset; Whereas all the secondary releases are configured to release the ball seat XY ( 8) from the Lexie (Y) inner sleeve the pre-selected hydraulic JU pressure operates or acts on the dropped ball ( 3) Thus the ball seat Ye (4) is moved to position OO and extended in the radius direction relative to the diameter of the second ball seat thus 1 allowing the ol (4) drop ball to pass through it. 1 ?- A device of claim 1 whereby each finger (£1) of the ball seat (4) is ?Up and provides outward tension in a diagonal direction on the tugs (1) 1 ?- Composition according to claim 0 wherein the notch (VY) is an annular cavity ?160888 having an inner diameter greater than the inner diameter of the surface 1 of the internal cylindrical surface 1 1;- The Wh device of protection element 1, whereby all the second release mechanism is “selected from a group consisting of a shear pin; a lug that is tightened towards the radius/ lugssge V and a retaining band at Tambadat. 1©*- device according to claim 0 wherein the first firing mechanism is provided by at least one shear pin Y. E->11 device of claim 1 wherein the helical shoulder is opis on the “outer part of the sleeve” the inner sleeve connected to the ball seat and the helical shoulder ¥ Compatible provided on the inner surface of the outer bushing and the shoulders engage with ¢ each other on the release of the ball seat so that the axial movement of the ball seat is converted into rotation. Blister includes the following steps: 1 > providing an indefinite number of ball-activated devices in the well; “ - inserting a drop ball (8) into the welt - monitoring and controlling pressure; and © - determining for each device when The drop ball (3) is an energized and released blister 1_terminated as the drop ball activating device comprises and is energized through the relative movement between the all VY (Y) inner sleeve and the outer sleeve (Y) 1) outer sleeve The inner sleeve A (Y) holding the ball scat seat (2) is actuated by a 5 drop ball (3) which is 8 co-centered and slidably positioned axially within the outer bushing (1) which comprises 0 an internal cylindrical surface “Jl internal cylindrical surface 1 to which the ball seat (4) comprises a number/set of fingers (41) to which the with 01 loops (£4) at one end and where each finger (£1) extends axially to the distal end which 1 interlocks in a lug extending about radius (1) which rests in the first position on the surface of 01 inner cylinder and the loops (1) of the fingers (£1) and thus a seat radius of 0 diameter less than the diameter of the drop ball (5); NT where the flap is the external quantity (1) It has at least one pair (Vv) in the inner surface; furl SLAB - 1" _ and the lugs (1) are configured to move or be received within at least one groove ( ) in a second VA position; thus the lugs (1) of the fingers (£1) specify at least a second ball seat diameter greater than of diameter V8 of the drop ball (4)”; the ball seat (4) being held in the outer quantity 0 sleeve (1) by a first-release mechanism Configure it to release a ball seat (6) 71 and the inner sleeve (7) from the outer sleeve (1) and when YY operates or affects the first hydraulic pressure Sala yi predetermined on Drop ball (3) YY and then the ball seat (4) and the inner sleeve (Y) inner sleeve (Yi) are pulled along the outer sleeve (1) With hydraulic pressure yo applied and then set as Broa 1 the second firing mechanism releases the ball seat (4) from the (Y) inner sleeve YY when impacted A second predetermined hydraulic pressure on the falling ball (3 YA) after which the ball seat (£) is moved to the Sb position and extended in the direction of the radius 4 to the diameter of the reel seat A second thus allowing the drop ball (3) to pass through it and continue 0 to the next ball launcher. 1 1 +- method according to oF protection wherein the pressure monitoring and control step also includes: apd Y point in time when the falling BSN drop balls (3) are stable on or reach to ball seat 3s 1 (%(” - monitor and/or control the pressure to trigger and/or activate the lead) - set a point in time when the falling ball (9) exits or moves away from the ball seat seat (E) 1 downward or move to the next ball operation; and 1 - specify the point in time and when an indefinite number of devices have been activated by the fund ball $Y — _— A falling drop ball (3) -1 -1 A method according to the oY claim that Lad Jam on the step of triggering an indefinite number of ¥ devices activated by falling balls into several groups ; each group is playable with one ¥ drop ball (4) and since the diameter of the drop ball (9) is one for each dc gana ¢ -1-01 method according to the Alea element which includes On the step of providing each set of activator device with a Y falling ball in a separate area of the blister. (3); wherein, a set of drop-ball-activated devices "that is driven by a drop-ball of smaller size is further from the surface as compared to a set of E-set of drop-activated devices driven by a drop-ball of a larger size. vad $