WO2020149760A1

WO2020149760A1 - System and method (variants) of constructing and completing branched wells

Info

Publication number: WO2020149760A1
Application number: PCT/RU2019/000021
Authority: WO
Inventors: Александр Сергеевич КАШЛЕВ; Динар Ильгизович НИЗАМОВ; Андрей Геннадьевич ФЕДОТОВ
Original assignee: Общество С Ограниченной Ответственностью "Адл Заканчивание"
Priority date: 2019-01-16
Filing date: 2019-01-16
Publication date: 2020-07-23
Also published as: RU2019133397A; RU2019133397A3; RU2753417C2

Abstract

A completion system is intended for constructing and completing branched wells. According to a method: a main borehole is drilled. A section below a stem is reamed. A running tool with an oriented instrument, a liner and an anchor hanger is lowered. The liner and the anchor hanger are installed in the open borehole. The actual position of the oriented profile of the anchor hanger in the well is determined. The anchor is activated, the tool is released and the running tool is lifted to the surface. The instrument data is read and the actual position of the anchor in the well is determined. A milling cutter assembly and a hollow whipstock are lowered in an orientation pre-set at the wellhead. The hollow whipstock is joined to the anchor and the whipstock is fixed in the anchor. The milling cutters are released from the whipstock and a side-hole branch is drilled along the whipstock. The liner is lowered enabling fluid production at the location interval of the whipstock.

Description

System and method (options) for construction and completion of multilateral wells

Technical field

The completion system is intended for the construction and completion of multilateral wells and refers to the construction of wells intended for oil production, and in particular to the construction and completion of multiple side branches from the main wellbore to enable oil production from multiple subterranean zones.

State of the art

The completion system is intended for the construction and completion of multilateral wells and refers to the construction of wells intended for oil production, and in particular to the construction and completion of multiple side branches from the main wellbore to enable oil production from multiple subterranean zones. In such wells, there are points of intersection of sidetracks with the main ones. These areas are called stem junctions (as well as articulations or branches). In accordance with the TAML classification (abbreviated from the English "Technical Advancement of Multilaterals", gradation of multilateral wells according to the level of technical excellence), wellbore connections are divided according to their characteristics into levels from 1 to 6, the first of which corresponds to the lowest degree of complexity design and functionality, and the sixth level is the highest.

A method of construction of a multilateral well and a diverting device for its implementation is known from the prior art (RU 2514048, C1, E21 B 7/08, E21 B 29/06, publ: 27.04.2014). The method includes installing a fixing unit with a whipstock with one deflecting surface in the main borehole built to the target depth. The fixing unit is made in the form of a hydromechanical anchor with a seat, and the anchor is fixed below the cutting interval. Before drilling the side bore, the casing is opened by milling the "window", and after the construction of the side bore, the whipstock is removed from the well, disconnecting it from the fixing unit, an additional whipstock of greater length is lowered until it interacts with the seat of the hydromechanical anchor, which fixes it from rotation, and before drilling an additional sidetrack, the casing is opened by milling an additional "window" followed by extraction an additional whipstock after the construction of the second sidetrack.

The device for implementing the method includes a whipstock run on the pipe string, equipped with one deflecting surface, connected from the bottom with shear elements through a sub with a fixing unit made in the form of a hydromechanical anchor, equipped with a longitudinally corrugated pipe, plugged from the bottom by a shoe, and a hydraulic centralizer located at the bottom of the sub ... Moreover, the centralizer is made in the form of a body with a longitudinal channel communicated with a longitudinally corrugated pipe and a pipe string. A hollow piston is installed inside the body, made with the possibility of axial movement under excess fluid pressure and equipped with conical surfaces that act upon the movement of the piston on the pushers, located evenly along the perimeter and height of the body with the possibility of limited radial movement outward until it interacts with the walls of the casing, while the body from above it is equipped with a groove for the counter projections of the sub-wedge-off-take and additional wedge-whipstock to prevent rotation and set them in a given direction.

The disadvantages of this analogue are the lack of the possibility of production from the underlying formation, as well as the fact that sidetracking is performed in the casing, while in the claimed invention, sidetracking is performed in the open hole.

Also known from the prior art are an assembly of equipment for deflecting a drill and a completion tool and a method for forming a lateral wellbore. (RU 2531511 C1, E21 B 7/08, publ. 20.10.2014). The equipment assembly is configured to be installed in the wellbore and comprises an outer wall surface configured to deflect the cutting tool to form a side borehole, and also deflect at least part of the component for completing the wellbore towards the side borehole, and at least part of a component for completing a wellbore is a joint used for completing a lateral wellbore and containing a shutoff and a sidetrack, a subsystem for temporary plugging of the space between the specified surface and a channel into which the shutoff can be inserted, and a sleeve attached to the temporary plugging subsystem and made with the ability to be displaced by the overlap, and the specified sleeve is made to prevent at least part of the debris from entering the seal, while the specified surface is configured to dock with the overlap and deflect the lateral lateral wellbore. The disadvantages of this analogue are the lack of the possibility of production from the underlying formation, as well as the fact that sidetracking is performed in the casing, while in the claimed invention, sidetracking is performed in the open hole.

A well completion method and system is known from the prior art. (RU 2649683 C2, E21 B 7/08, E21 B 23/01, publ. 04.04.2018). The wellbore completion method includes moving the whipstock wedge and anchor retainer into the parent wellbore, while the anchor retainer is attached to the whipstock wedge by means of a detachable connection. The parent wellbore is lined at least partially with a casing that includes a latch connection, securing the anchor retainer within the parent wellbore by mating the anchor retainer latch profile to the latch connection; deflection of the drill bit by a wedge - a diverter for drilling a side borehole extending from the parent borehole; moving the lateral completion equipment into the lateral wellbore with a tool for running the casing-liner, while the lateral completion equipment contains a finishing tool; separating the whipstock wedge from the anchor retainer by a detachable connection using the whipstock wedge extraction tool and thereby opening the detachable section, the whipstock extraction tool being functionally connected to the distal end of the tool for running the liner casing; removing the whipstock from the parent wellbore by means of the whipstock extraction tool; and moving the completion deflector into the interior of the parent wellbore, the completion deflector being functionally secured to the work string, and attaching the completion deflector to the anchor retainer via a detachable connection.

The disadvantages of this analogue is that sidetracking is performed in the casing; in the claimed invention, sidetracking is performed in an open hole.

Also known from the prior art is a method for constructing a multilateral well (RU 2650161 C1, E21 B7 / 06, publ. 17.07.2017). A method of constructing a multilateral well, characterized by the fact that the main wellbore is drilled from the surface of the earth to the formation, a sidetrack is drilled from the previously drilled main borehole, upon completion of its drilling, a casing string equipped in the upper part with a node for the formation of a multilateral “joint” not lower than the third level of complexity according to the TAML classification is lowered into the side bore. Sidetracking is carried out from the previously cased production casing and cemented main wellbore, opening with the sidetrack the intervals of unstable sediments prone to crumbling and collapse, and the underlying zone with non-crumbling rocks with the opening of the productive formation and the subsequent carrying out of a complex of geophysical studies. The casing string is lowered into the side bore, made from the lower section and at least one upper section, and is lowered in sections, while the lower section is equipped with a receiving adapter-disconnector for connection with the subsequent section, and the upper section has a length determined based on the actual depth running the previous section and the actual interval of the "window" milled in the string is made of the same or larger diameter and includes at least one casing pipe equipped in the lower part with a node for connection with the previous section located in the well, and the upper one is equipped in the upper part either a receiving adapter-disconnector for connection with a subsequent section, or a node for the formation of a multilateral joint not lower than the third level of complexity according to the TAML classification. EFFECT: improving the quality of construction of multilateral wells, minimizing the risks of getting rejects in the construction of multilateral wells caused by a liner failure.

The essence of the invention

The task to be solved by the claimed technical solution is to create a method for involving additional volumes of reservoir products in the development, by drilling an additional wellbore from an uncased section of the main wellbore, as well as creating a method and system that allows to reduce the number of trips, to increase the orientation accuracy and increase the speed of orientation.

The technical result of the claimed group of the invention is a reduction in hoisting operations, a reduction in orientation time when increasing drainage area of the productive formation due to drilling in a given direction and subsequent casing of an additional one (2, 3, etc.) sidetracks.

The technical result of the claimed group of inventions is achieved due to the fact that the main wellbore is drilled, the section for the liner is worked through, the running tool is lowered with an orientation tool, a liner and a suspension anchor, a liner with a suspension anchor is installed in an open wellbore at a given depth, and the actual the position of the orientation profile of the anchor-suspension in the well, the anchor is activated, the tool is released and the running tool is lifted to the surface, the instrument data is read and the actual position of the anchor in the well is determined, after which the assembly of cutters and a hollow whipstock is lowered with a preset at the wellhead orientation, join the hollow whipstock in the anchor and fix the whipstock in the anchor, while the top of the anchor is made in the form of a figured orientation profile, and the whipstock is made with an orientation key, the cutters are freed from the deflector wedge and the lateral branch is drilled wellbore along the whipstock, after which the liner is run, made with the possibility of producing fluid in the interval of the whipstock location.

In the particular case of the implementation of the claimed technical solution, an autonomous orientator device is used to orient the top of the shank suspension.

In the particular case of the implementation of the claimed technical solution, a hydraulic or hydro-mechanical device for determining the orientation of the whipstock is used to orient the top of the liner suspension.

In the particular case of the implementation of the claimed technical solution, to determine the position of the orientation profile before running into the well, the points of measurement of the orientation tool and the orientation profile are set so that their orientation relative to the apsidal plane is the same.

In the particular case of the implementation of the claimed technical solution, a ram system or a corrugated pipe system is used as anchoring elements.

The technical result of the claimed group of inventions is also achieved due to the second variant of the method, in which the main wellbore is drilled, the section for the liner is worked through, the running tool with the orientation tool, the liner and the suspension anchor is lowered, the top of which is made in the form of a hollow whipstock with an anchor up to a given depth, while the transport column is made with a hydromechanical device that allows you to set in a given orientation the working surface of the whipstock, and the top of the shank is made with the possibility of rotation relative to the entire liner, while the whipstock is set in a predetermined orientation and the whipstock is fixed in the open hole, the sidetrack branch is cut off with a mill or chisel.

In the particular case of the implementation of the claimed technical solution according to the second option, to determine the position of the orientation profile before running into the well, the points of measurement of the orientation tool and the orientation profile are set so that their orientation relative to the apsidal plane is the same.

In the particular case of the implementation of the claimed technical solution according to the second option, a ram system or a corrugated pipe system is used as anchoring elements.

The technical result of the claimed group of inventions is also achieved due to a system for construction and completion of a well containing a liner, an anchor-suspension for an open hole with an orientation profile, a running tool connected to an anchor with a suspension, a device for determining the orientation of the whipstock, a hollow whipstock, when the anchor suspension consists of an orientation profile, made in the form of a funnel with a groove, and an anchor element, and the whipstock is made with a deflecting surface in the upper part, while an orientation key is made in the upper part of the whipstock to interact with the groove of the orientation profile, and the bottom of the whipstock is made in the form of a ratchet grip, while the anchor-hanger running tool is made with the possibility of lowering the hanger-hanger and the liner into the well, activating the liner hanger-anchor in the open wellbore, and freeing the transport string from the running liner, the running tool inserted into the component the armature and is fixed in it by shear elements in the axial and radial directions.

In the particular case of the implementation of the claimed technical solution, the device for determining the orientation of the whipstock is made in the form of an autonomous device that allows determining the position of the anchor orientation profile relative to the apsidal plane of the wellbore.

In the particular case of the implementation of the claimed technical solution, the device for determining the orientation of the whipstock is made in the form of a hydraulic or hydromechanical device. In the particular case of the implementation of the claimed technical solution, the anchor element is made in the form of a corrugated pipe with longitudinal rays, with the possibility of changing the shape by creating excessive internal pressure.

In the particular case of the implementation of the claimed technical solution, the anchor suspension is connected to the triggering tool using shear elements or using a hydromechanical system for fixing the triggering tool.

Brief Description of Drawings

The essence of the claimed technical solution is illustrated by examples of its implementation, shown in the attached drawings, where:

Fig. 1 - an anchor-suspension for an open hole with an orientation profile;

Figure 2 is the profile of the anchor element;

Fig.Z - suspension anchor;

Figure 4 is an anchor trigger;

Fig. 5 is a hollow whipstock;

Fig. 6 is a sectional view of a hollow whipstock;

Fig. 7 is a completion system;

Fig. 8 is a whipstock assembly with an arrangement of cutters. the following positions are indicated in the figures:

1 - figured orientation profile, 2- anchor element, 3 anchor-suspension, 4 - upper sub, 5 - bolts, 6 - sealing unit, 7 - holes, 8 - saddle, 9 - orientation device, 10 - internal channel of the wedge whipstock, 11- top of whipstock, which is a deflecting surface, 12 - bottom of whipstock, 13 open hole, 14 - main bore shank, 15 - anchor - suspension for open hole, 16 - hollow whipstock assembly, 17 - sidetrack wells, 18 - cutters arrangement.

Disclosure of invention

The main components of the system are a whipstock assembly (16) with the possibility of producing fluid from the underlying wellbore, (15) an anchor-suspension for an open hole, with the possibility of producing fluid from the underlying wellbore.

Well completion method is the following sequence of actions: After drilling a section of the main borehole, a liner is run and installed in an open wellbore, and the liner is fixed in an open wellbore with an anchor element.

The design features of the liner hanger make it possible to determine / set the liner hanger in a given orientation relative to the apsidal plane of the well.

In the case when the orientation of the liner hanger top is to be determined according to the well construction algorithm, an autonomous orientator device is used, which is run as part of the liner hanger running tool and, as a consequence, after installing the liner hanger in the open hole, allows to determine the actual orientation of the liner hanger. According to the data obtained, the whipstock (16) is lowered and docked with the orientation profile of the liner hanger.

For the construction algorithm, in which the hollow whipstock assembly (16) descends simultaneously with the liner assembly, orientation occurs due to a hydraulic or hydromechanical device for determining the orientation of the hollow whipstock assembly (16). Accordingly, after orienting the whipstock assembly (16) in the borehole to a predetermined orientation, the anchor element is activated to fix the whipstock in the open hole.

Depending on the design features of the orienting device and the liner hanger of the main borehole, the window cut-out system (wedge-cutter and the arrangement of cutters) / the assembly may be launched for drilling.

After drilling the sidetrack, the liner is run with the possibility of producing fluid in the interval of the hollow whipstock assembly (16), thereby ensuring production from the interval below the location of the hollow whipstock assembly (16).

An anchor-suspension for an open hole (15) is a device for fixing the overlying equipment in an open hole from axial movement, as well as from turning in the apsidal plane of the wellbore. If necessary, the suspension anchor (15) can have a packer in its structure, which makes it possible to separate the interval above and below with respect to the anchor.

As anchoring elements, it is possible to use both a ram system and a corrugated pipe system, which, after opening to its maximum diameter, allows anchoring. In this case, the top of the anchor can be a figured orientation profile (1), designed to create fixed depth rapper and orientation in the apsidal plane of the well, for assemblies intended for subsequent docking with the orientation profile, in the case of a whipstock assembly.

The figured orientation profile (1), due to its geometry and design, makes it possible to fix subsequent assemblies exclusively in one position, due to the presence of a profile for an orientation key and, accordingly, a corresponding orientation key on the assembly of the hollow whipstock assembly (16).

In turn, the assembly of the hollow whipstock assembly (16) has a reciprocal orientation key, which, when docked with the hollow deflector wedge assembly (16), can only be fixed in the position when the orientation key has completely entered the groove of the orientational figured orientation profile (1) ...

The hollow whipstock assembly (16) consists of two components: the top of the whipstock (deflecting surface) (11), the bottom of the whipstock (12) with an orientation key.

The assembly of the hollow whipstock assembly (16), for the case of application with an orientation profile, has the ability to set and then fix the bottom of the whipstock (12) relative to the deflecting surface (11) in any orientation.

Thus, having information on the actual orientation of the shaped profile installed in the well, it becomes possible to subsequently install the whipstock assembly in any orientation relative to the apsidal plane. The hollow whipstock is designed to create the possibility of deflecting the assembly for sidetracking at a given depth and in a given orientation in the apsidal plane.

The suspension anchor (3) in the form of a hollow whipstock (11) is an anchor element, the top of which is represented by a hollow whipstock (11). Thus, in the process of running and installing the main bore liner in the well, it becomes possible, by rotating the entire assembly in the open wellbore, to fix the suspension anchor with the whipstock in a given position relative to the depth and apsidal plane of the wellbore.

The main components of the multilateral well construction and completion system are:

1.Anchor-suspension for an open hole with an orientation profile (Fig.Z.),

2.anchor trigger (Fig. 4.),

3. autonomous orientator (9). 4.hollow whipstock (11)

Anchor suspension for an open hole consists of an orientation profile (1) and an anchor element (2). The orientational profile of the anchor is rigidly connected to the anchor element, without the possibility of rotation or axial displacement relative to each other. The orientation profile (1) is shaped like a funnel with a groove for an orientation key. The presence of a shaped funnel is due to the fact that the assembly of the hollow whipstock assembly (Fig. 5.) has a matching orientation key, which, when docked with the whipstock, can only be locked in a position when the orientation key has completely entered the groove of the orientation funnel (1) ... The anchor element (2) is a corrugated pipe (FIG. 2) with longitudinal beams.

The anchor element is activated by creating an excess internal pressure, then assuming a circular shape in its cross section. When an excess internal pressure is created, the corrugated pipe, under the influence of pressure, begins to take its original shape, opening the longitudinal rays and increasing in size. The number of beams can be selected based on the geometric dimensions of the anchor element in the transport position. Thus, in the activated state, the anchor element is opened and fixed in the open hole, due to the influence of internal overpressure.

The anchor hanger is lowered into the well on the running tool. The anchor suspension is connected to the trigger by means of shear elements of the hydromechanical system for fixing the trigger to the anchor.

The lower part of the hanger is provided with threads similar to those of the shank.

The running tool (Fig. 4.) of the anchor suspension is a unit that allows the following operations to be performed: lowering the suspension anchor and the liner into the well, activate the liner suspension anchor in the open wellbore, and release the transport string from the running liner.

The trigger tool (Fig. 4) consists of an upper sub (4) and sealing assemblies (6), a seat (8) for a locating ball, an orientation device (9). All elements of the trigger are connected by threaded connections. The trigger (Fig. 4) is inserted into the anchor assembly and fixed therein with shear bolts (5) in the axial and radial directions. In the position when the trigger is docked with the anchor-suspension, the seal assemblies (6) the trigger element creates a hermetically sealed cavity inside the anchor assembly, thus, when the discharge pressure increases, the force generated by the pressure through the hole (7) acted on the anchor element - activating it.

How the tool works:

After lowering the anchor into the well to a predetermined depth, the setting ball is dropped into the transport pipe string. After the ball lands in the seat (8), which is inside the trigger (Fig. 4.), the seat (8) is sheared off by increasing the pressure inside the trigger (Fig. 4). With an increase in pressure to 80 atm, the pins holding the seat are sheared off, the seat (8) is shifted to the lower part of the trigger. At the place where the saddle was in the transport position, openings (7) in the trigger are opened, allowing pressure to be injected into the anchor element, thereby activating the anchor element in the open wellbore.

After the anchor element (2) is activated in the wellbore, the bolts (5) are sheared, which fix the tool relative to the anchor assembly (Fig. 1). The pins are cut off by turning the transport string to the right and then tightening the transport string of pipes. After the pins have been cut off, the trigger tool (Fig. 4) is lifted to the surface.

The downhole orientation tool (9) is designed to determine the actual position of the orientation profile of the anchor-suspension (Fig. 1) in the well, after activation of the anchor unit. An autonomous device (9) that allows you to determine the position of the orientation profile (1) of the anchor relative to the apsidal plane of the wellbore. To determine the position of the orientation profile (1) before running into the well, the measurement point of the orientation tool (9) and the orientation profile (1) is set, so that their orientation relative to the apsidal plane is the same.

As a source of energy, the device has rechargeable batteries in its structure. The device has 2 modes: mode - active, mode - sleep. During the descent into the well, the tool is in the sleep mode and is motionlessly attached to the trigger. Before running into the well, the point of measurement of the orientation device (9) and the orientation profile (1) is set, so that their orientation relative to the apsidal plane is the same. After the anchor element is activated at a given depth, the device (9) switches to the active mode. The transition to the "Active" mode occurs due to the creation of a magnetic field around the device (9). The magnetic field is generated by permanent magnets installed in the body of the saddle (8) under the locating ball. Thus, after the saddle cut has occurred (8) due to excessive internal pressure, the seat is shifted by pressure along the inner diameter of the trigger until the tool (9) touches the lower part of the trigger. After the saddle (8) touches the device, the magnetic field from the permanent magnets covers the device and the device switches to the "active" mode, recording the actual position of the groove of the anchor's orientation profile. After the complete lifting of the tool, the device is removed and information is read from it on the actual position of the orientation profile (1) of the armature assembly (Fig. 1).

The whipstock (Fig. 5) is a node for sidetracking in an open wellbore with a bore internal diameter and subsequent production of fluid through the internal passageway (18) of the whipstock.

The hollow whipstock consists of 2 main elements: the top of the whipstock (deflecting surface) (11), the bottom of the whipstock (12).

The bottom (12) of the whipstock is represented by a ratchet grip (13) (Fig. B), for its subsequent fixation in the anchor - the shank suspension (Fig. 1). The bottom (12) of the whipstock is also intended to orient the arrangement of the whipstock in the orientation profile (1) of the suspension armature (Fig. 1). The upper part (11) is designed to deflect the cutter or directional drilling assembly. The whipstock is run into the well together with the cutter assemblies (18) to cut off the branch in the open wellbore. Before running into the well, the bottom (12) of the whipstock relative to the top (11) is set in such a way that after joining the whipstock assembly into the anchor (Fig. 1), the deflecting surface (11) of the whipstock is directed to the target for shearing branching degrees relative to the apsidal plane of the wellbore. The whipstock wedge (Fig. B) is mechanically joined into the orientation profile (1) of the anchor, and can only be fixed in one position (when the orientation key has entered the orientation profile (1) of the anchor).

After the whipstock is fixed in the anchor (at the wellhead, there is a landing and tightening of the drilling tool), the cutter assembly is released by tension and unloading of the transport pipe string. The milling cutter with a whipstock is connected by a transport shear bolt, which breaks when a load on it is greater than the shearing force.

The key feature of the whipstock from similar wedge designs is the inner cavity of the maximum possible size for the possibility of producing fluid without removing the whipstock from the well, as well as for the possibility of drilling the wellbore along the diverter without significant wear the geometry of the deflecting surface (11) of the whipstock. Drilling along this whipstock is carried out primarily due to the fact that the wall thickness on the deflecting surface (11) makes it possible to create sufficient support for the arrangement of the cutter and the arrangement for drilling the sidetrack, while maintaining the maximum possible inner diameter of the whipstock ...

Description of the system installation process (Fig. 7):

After drilling and working out the section for the liner (13), the liner (14) with an anchor-suspension (15) is lowered. After the liner is allowed to the specified depth, the anchor-suspension (15) is activated in the open hole, and the tool is released. The instrument contains an autonomous orientation device that records the final position of the orientation profile relative to the apsidal plane.

After the liner is lowered, the whipstock (16) is lowered, with the orientation already displayed at the wellhead. The whipstock fits into the orientation funnel only in one position. After confirming the fixation of the whipstock in the anchor profile, the cutters are released from the deflector wedge and the process of cutting off the branch and drilling the sidetrack is performed (17).

Basic well construction algorithm:

TRN Na1: Running a liner with an anchor-hanger. Activation of the anchor-suspension of the anchor with orientation profile. After lifting the tool - determination of the profile orientation according to the data of the stand-alone device.

OPONd2: Lowering a hollow whipstock with an orientation-fixing profile. Docking with the anchor profile. Cutting off a sidetrack branch, drilling a well.

Sidetracking.

CnONs3: Running a sidetrack liner, activating the liner hanger in the production casing.

Claims

Claim

1. A method of construction and completion of a well, in which the main wellbore is drilled, a section for a liner is worked through, a running tool with an orientation tool, a liner and a suspension anchor is lowered, a liner with a suspension anchor is installed in an open wellbore at a given depth, the actual position is determined the orientation profile of the anchor-suspension in the well, the anchor is activated, the tool is released and the running tool is lifted to the surface, the instrument data is read and the actual position of the anchor in the well is determined, after which the assembly of cutters and a hollow whipstock with an orientation preset at the wellhead is lowered , join the hollow whipstock in the anchor and fix the whipstock in the anchor, while the top of the anchor is made in the form of a figured orientation profile, and the whipstock is made with an orientation key, the cutters are freed from the whipstock and the lateral branch of the well is drilled are carried out along the whipstock, after which the liner is run, made with the possibility of producing fluid in the interval of the whipstock location.

2. A method according to claim 1, characterized in that an autonomous orientator device is used to orient the top of the shank hanger.

3. The method according to claim 1, characterized in that a hydraulic or hydromechanical device for determining the orientation of the whipstock is used to orient the top of the shank hanger.

4. The method according to claim 1, characterized in that to determine the position of the orientation profile before running into the borehole, the points of measurement of the orientation tool and the orientation profile are set so that their orientation relative to the apsidal plane is the same.

5. The method according to claim 1, characterized in that a ram system or a corrugated pipe system is used as the anchoring elements.

6. A method of construction and completion of a well, in which the main wellbore is drilled, a section for a liner is worked through, a running tool with an orientation tool, a liner and a suspension anchor is lowered, the top of which is made in the form of a hollow whipstock with an anchor to a given depth, while the transport the string is made with a hydromechanical device that allows the working surface of the whipstock to be set in a given orientation, and the top of the liner is rotatable relative to the entire liner, the whipstock is set in a given orientation and the whipstock is fixed in the open hole, the sidetrack is cut off with a cutter or with a chisel.

7. The method according to claim 6, characterized in that to determine the position of the orientation profile before running into the well, the points of measurement of the orientation tool and the orientation profile are set so that their orientation relative to the apsidal plane is the same.

8. A method according to claim 6, characterized in that a ram system or a corrugated pipe system is used as the anchoring elements.

9. A well completion system containing a liner, an anchor-hanger for an open hole with an orientation profile, a running tool connected to an anchor hanger, a device for determining the orientation of a whipstock, a hollow whipstock,

in this case, the suspension anchor consists of an orientation profile, made in the form of a funnel with a groove, and an anchor element, and the whipstock is made with a deflecting surface in the upper part, while in the upper part of the whipstock, an orientation key is made to interact with the groove of the orientation profile , and the bottom of the whipstock is made in the form of a ratchet grip,

while the hanger-hanger running tool is designed with the possibility of lowering the hanger-hanger and the liner into the well, activating the liner hanger-anchor in the open wellbore, and releasing the transport string from the run-down liner, while the running tool is inserted into the anchor assembly and fixed in it by shear elements in the axial and radial directions.

10. The system according to claim 9, characterized in that the device for determining the orientation of the whipstock is made in the form of an autonomous device that allows to determine the position of the anchor orientation profile relative to the apsidal plane of the wellbore.

11. The system according to claim 9, characterized in that the device for determining the orientation of the whipstock is made in the form of a hydraulic or hydromechanical device.

12. The system according to claim 9, characterized in that the anchor element is made in the form of a corrugated pipe with longitudinal beams, made with the possibility of changing its shape by creating excessive internal pressure.

13. The system according to claim 9, characterized in that the suspension anchor is connected to the launching tools using shear elements or a hydromechanical system for fixing the launching tool.

14. The system according to claim 9, characterized in that the anchor suspension is connected to the trigger by means of shear elements or by means of a hydromechanical system for fixing the trigger.