CN218716697U - Lateral drilling horizontal well blocking and sand prevention reproduction pipe column - Google Patents

Abstract

The utility model discloses a lateral drilling horizontal well blocking sand control reproduction tubular column, which comprises a releasing packer, a lateral drilling oil pipe, a safety joint and a plug, wherein the lateral drilling oil pipe, a leather cup packer, a reproduction sand filtering pipe and a plug are sequentially connected below the releasing packer, the safety joint is connected between the reproduction sand filtering pipes, and the plug is connected at the bottom end of the blocking sand control reproduction tubular column; the outer diameter of the reproduced sand screen pipe is smaller than the inner diameter of the original well casing hanger of the sidetracking horizontal well, the reproduced sand screen pipe can be lowered into the original well sand screen pipe with the screen pipe breaking point, and the leather cup packer is connected between the sidetracking oil pipe and the reproduced sand screen pipe and is located below the casing breaking point. The utility model discloses can be arranged in the sidetracking horizontal well, solve slim hole sidetracking horizontal well because of the sleeve pipe breaks or the sand screen damages the problem that causes the stratum to go out sand and stop production, effectively prolonged the exploitation life-span of this type of well.

Description

Lateral drilling horizontal well blocking and sand prevention reproduction pipe column

Technical Field

The utility model relates to a production tubular column of horizontal sidetracking well of oil industry, especially a sidetracking horizontal well card leaks sand control reproduction tubular column.

Background

The sidetracking horizontal well is one of effective means for improving well pattern deployment and digging residual oil in a submerged block by using an old well bore, is a barefoot sand screen used in the sidetracking horizontal well, and is widely applied to various oil fields in recent years. However, the inner diameter of a sidetrack horizontal well bore is smaller, wherein the inner diameter of the casing is only 82.3mm, and the inner diameter of the sand screen is only 62.3mm. This makes the sand control tools, such as the base pipe, sand screens and outer protective sleeves, attached in the completion string less robust than those attached in conventional wellbore completion strings, while the completion string lacks a correspondingly configured small diameter tool because the wellbore of the sidetrack horizontal well is small.

In the process of crude oil exploitation, once a sand filtering pipe in a production pipe column of a sidetracking horizontal well is washed by liquid containing sand grains for a long time and with high strength, the sand filtering pipe cannot be treated once the sand filtering pipe section or a small casing part is damaged and then sand and water are produced, and only production with diseases or production halt and scrapping are carried out, so that the development effect is greatly influenced.

At present, a sand screen connected in a production string of a sidetrack horizontal well mainly comprises a base pipe, a sand screen and an outer protective sleeve. In conventional 5 ¹ / ₂ The in or 7in casing is matched with a releasing packer for use, and the structural strength of the three parts can be well realized due to the large pipe diameter of the conventional casing. However, in a sidetrack horizontal well, the inner diameter of the sand screen is only 62.3mm, which is far lower than that of a conventional casing. Meanwhile, chemical sand control cannot be implemented and only mechanical sand control can be performed under the condition that the casing is broken.

The method is used for mechanical sand control under the condition that a casing of a sidetracking horizontal well is broken, and the problem of casing breakage is also considered while sand control is carried out, so that the problem of mechanical sand control is solved.

In order to solve the problems, technicians do a lot of work, keywords such as horizontal well blocking and sand prevention, sidetracking horizontal well sand prevention and the like are searched in a national intellectual property office website, and only the following patent technologies of small cased well sand prevention tubular columns are found: CN202022577149.X discloses a minor diameter sand control wire winding screen pipe convenient to clearance, this utility model is suitable for a wire winding screen pipe assists technical field, discloses a minor diameter sand control wire winding screen pipe convenient to clearance, including a pipe body, the body right side is run through slidable mounting and is had the rotating tube, the equal horizontal fixed mounting in both sides surface has the connecting plate about the rotating tube top, the inside water storage chamber of having seted up of connecting plate, connecting plate top surface runs through fixed intercommunication and has the drain pipe, the dwang is installed through sealed bearing rotation in the drain pipe right side middle-end. The utility model discloses owing to place the rotating tube on the body surface, and then can promote the rotating tube and carry out horizontal migration on the body surface to and install the connecting plate in rotating tube top both sides, and can carry the water for the clearance to the inside of drainage pipe, carry to the inside water storage intracavity portion of connecting plate by the drain pipe again, carry out water spray treatment through the drain hole, and brush the clearance through the clearance brush of connecting plate bottom to the body surface.

The utility model relates to a small cased well sand control pipe column, which comprises a wire-wound screen pipe, wherein the lower end of the wire-wound screen pipe is connected with a coupling in a screwing way, the lower end of the coupling is connected with a double male nipple in a screwing way, and the lower end of the double male nipple is connected with a bottom sand washing tool in a screwing way; the upper end of the wire-wound screen pipe is screwed with a safety joint, the upper end of the safety joint is screwed with a lateral drilling oil pipe, the upper end of the lateral drilling oil pipe is screwed with a top releasing tool, the top releasing tool is provided with a flushing pipe extending downwards along a central line, the lower end of the flushing pipe sequentially penetrates through the lateral drilling oil pipe, the safety joint and the wire-wound screen pipe to be inserted into a coupling center bell and spigot, and the female thread at the upper end of the coupling is screwed with the lower end of the wire-wound screen pipe. The upper part of the lower butt joint is provided with a bell and spigot and a locking ring, the packer which can be released is inserted in the lower butt joint after the release, and the upper butt joint at the lower end of the packer is inserted in the bell and spigot of the lower butt joint.

CN202022490905.5 discloses a cup packer and use tubular column of this cup packer, this utility model has related to a cup packer and has used the tubular column of this cup packer. The packing cup packer comprises a central pipe, a packing cup sheath and a shearing piece, wherein the packing cup is fixed relative to the central pipe and is arranged on a packing cup fixing part of the central pipe; the leather cup sheath is sleeved on the central pipe, and the lower end of the leather cup is bound in the upper port of the leather cup sheath; the cutting piece locks the leather cup sheath and the central pipe, and when the axial force borne by the leather cup sheath reaches a set value, the cutting piece is cut off by the leather cup sheath and the central pipe to unlock the leather cup sheath and the central pipe; the leather cup sheath is provided with an upper sealing part and a lower sealing part which are arranged at an upper interval and a lower interval, the upper sealing part and the lower sealing part are respectively in sealing fit with the central pipe, and the cross section of one end of the leather cup sheath, which is positioned above the upper sealing part, is larger than the cross section of one end, which is positioned below the lower sealing part.

The screens and strings disclosed above can only be used in casings of 82.3mm internal diameter and must be used without casing damage, and once the casing or sand screen is damaged, production cannot continue.

Disclosure of Invention

The utility model aims at providing a sidetracking horizontal well card leaks sand control reproduction tubular column solves the problem that cannot continue to produce after sidetracking horizontal well sleeve pipe and filter sand pipe damage, lets the sidetracking horizontal well after sidetracking small cannula and filter sand pipe damage can continue to produce, reduces the crude oil exploitation cost.

The technical solution of the utility model is that: the utility model provides a side-tracking horizontal well card leaks sand control and produces tubular column includes releasing packer, side-drilling oil pipe, safety joint and plug, wherein: a lateral drilling oil pipe, a leather cup packer, a reproduced sand filtering pipe and a plug are sequentially connected below the releasing packer, a safety joint is connected between the reproduced sand filtering pipes, and the plug is connected to the bottom end of the stuck sand-prevention reproduced pipe column; the outer diameter of the reproduced sand screen pipe is smaller than the inner diameter of the original well casing hanger of the sidetracking horizontal well, the reproduced sand screen pipe can be lowered into the original well sand screen pipe with the screen pipe breaking point, and the leather cup packer is connected between the sidetracking oil pipe and the reproduced sand screen pipe and is located below the casing breaking point.

Preferably, the packer is a conventional packer and can be fixed in the original well casing above the original well casing hanger.

Preferably, the releasing packer is a releasing packer special for a small sidetracking casing and can be fixed above a casing fracture point in the small sidetracking casing below an original well casing hanger.

Preferably, the cup packers are arranged at more than one stage, the cup packers at all stages are connected through a connecting base pipe, and two ends of the cup packers after connection are respectively connected with a joint of the connecting base pipe and a coupling of the connecting base pipe; the connecting base pipe, the connecting base pipe joint and the connecting base pipe coupling are all made of precision metal alloy steel P110.

Preferably, the cup packer comprises a primary cup seal and a secondary cup seal, the primary cup seal and the secondary cup seal are connected through a connecting base pipe, and the large opening ends of the primary cup seal and the secondary cup seal face the release packer; the connection base pipe joint below the one-level leather cup seals can be in threaded connection with the reproduction sand screen, and the connection base pipe coupling above the second-level leather cup seals can be in threaded connection with the sidetracking well oil pipe.

Preferably, the reproduction sand screen is provided with a sand screen base pipe, a sand screen net and an outer protective sleeve, one end of the sand screen base pipe is a sand screen pipe coupling, the other end of the sand screen pipe is a sand screen pipe joint, the sand screen net is arranged between the outer protective sleeve and the sand screen base pipe, and liquid outlet holes are formed in the sand screen base pipe and the outer protective sleeve; the liquid outlet holes in the sand filtering base pipe and the outer protective sleeve are radial holes.

Preferably, every two regenerated sand filtering pipes are in one group, and each group of regenerated sand filtering pipes are connected through a safety joint; the maximum outer diameters of the reproduced sand filtering pipe and the safety joint are both 50mm, the maximum outer diameter of the sand filtering base pipe is 36mm, and the maximum inner diameter of the sand filtering base pipe is 28mm; the sand filtering net consists of more than one layer of flow guide net and more than one layer of filter net, the flow guide net and the filter net are alternately woven outside the sand filtering base pipe, and two ends of the flow guide net and the filter net are welded with the sand filtering base pipe; the sand-filtering base pipe, the sand-filtering pipe coupling and the sand-filtering pipe joint are all made of precision metal alloy steel P110.

Preferably, the upper end of the plug can be connected with a tail pipe, and the length of the tail pipe is more than one meter.

The utility model provides a side-tracking horizontal well card leaks sand control and produces tubular column includes releasing packer, side-drilling oil pipe, safety joint and plug, wherein: the lower part of the releasing packer is sequentially connected with a side drilling oil pipe, a reproduced sand filtering pipe and a plug, a safety joint is connected between the reproduced sand filtering pipes, and the plug is connected with the bottom end of the stuck sand-prevention reproduced pipe column; the outer diameter of the reproduced sand screen pipe is smaller than the inner diameter of the original well casing hanger of the sidetracking horizontal well, the reproduced sand screen pipe can be put into the original well sand screen pipe with a screen pipe breaking point, and the releasing packer is fixed in the sidetracking small casing.

The releasing packer is fixed in a small sidetrack casing above the original well sand screen, and is a releasing packer special for the small sidetrack casing; the upper end of the plug is connected with a tail pipe, and the length of the tail pipe is more than one meter.

Preferably, the reproduction sand screen is provided with a sand screen base pipe, a sand screen net and an outer protective sleeve, one end of the sand screen base pipe is a sand screen pipe coupling, the other end of the sand screen pipe is a sand screen pipe joint, the sand screen net is arranged between the outer protective sleeve and the sand screen base pipe, and liquid outlet holes are formed in the sand screen base pipe and the outer protective sleeve; the liquid outlet holes in the sand filtering base pipe and the outer protective sleeve are radial holes.

Preferably, every two regenerated sand filtering pipes are in one group, and each group of regenerated sand filtering pipes are connected through a safety joint; the maximum outer diameters of the reproduced sand filtering pipe and the safety joint are both 50mm, the maximum outer diameter of the sand filtering base pipe is 36mm, and the maximum inner diameter of the sand filtering base pipe is 28mm; the sand filtering net consists of more than one layer of flow guide net and more than one layer of filter net, the flow guide net and the filter net are alternately woven outside the sand filtering base pipe, and two ends of the flow guide net and the filter net are welded with the sand filtering base pipe; the sand-filtering base pipe, the sand-filtering pipe coupling and the sand-filtering pipe joint are all made of precision metal alloy steel P110.

The utility model discloses a show the result of use and lie in: the utility model discloses can be arranged in the sidetracking horizontal well, solve slim hole sidetracking horizontal well because of the sleeve pipe breaks or the sand screen damages the problem that causes the stratum to go out sand and stop production, effectively prolonged the exploitation life-span of this type of well. The utility model discloses there are two kinds of embodiment, can solve among the sidetracking horizontal well existing sidetracking small casing and break and the damaged condition of former well sand screen, also can solve the sidetracking horizontal well that only has the damaged condition of former well sand screen, make above-mentioned two kinds of wells resume production.

The utility model discloses can show the exploitation cost that reduces crude oil, have the result of use that is showing.

Drawings

The accompanying drawings are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention, and together with the description serve to explain the principles of the invention. In the drawings: fig. 1 is a schematic structural diagram and a working principle diagram of the utility model which fixes a releasing packer above an original well casing hanger.

Figure 2 is the structure sketch map and the working principle picture of the utility model which fixes the releasing packer in the side-drilling small casing and is positioned above the casing rupture point.

Fig. 3 is a schematic structural diagram and a working principle diagram of the utility model which fixes the releasing packer in the sidetracking small casing and is positioned above the sand screen of the original well.

Fig. 4 is a schematic structural view of a longitudinal section of the regenerated sand screen of fig. 1, 2 or 3.

Fig. 5 is a schematic view of a cross section of the regenerated sand screen of fig. 1, 2 or 3.

FIG. 6 is a schematic diagram of the cup packer of FIG. 1 or FIG. 2.

Detailed Description

The drawings are for reference and illustration purposes only and are not intended to limit the scope of the present disclosure. The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. It is to be understood that the embodiments described are only some embodiments of the invention, and not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

In the description of the present invention, it is to be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are merely for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. In addition, in the description of the present invention, "a plurality" means two or more unless specifically limited otherwise.

The utility model has two implementation modes

Implementation mode one

Referring to fig. 1, fig. 2, fig. 4, fig. 5 and fig. 6, a lateral drilling horizontal well stuck leakage sand control reproduction tubular column comprises a releasing packer 1, a lateral drilling oil pipe 2, a safety joint 6 and a plug 7, wherein:

the lower part of the releasing packer 1 is sequentially connected with a side drilling oil pipe 2, a leather cup packer 3, a reproduced sand filtering pipe 4 and a plug 7, a safety joint 6 is connected between the reproduced sand filtering pipes 4, and the plug 7 is connected with the bottom end of a stuck sand-prevention reproduced pipe column;

the external diameter of the reproduced sand screen 4 is smaller than the internal diameter of the original well casing hanger of the sidetracking horizontal well and can be put into the original well sand screen 5 with the screen pipe breaking point 9, and the leather cup packer 3 is connected between the sidetracking oil pipe 2 and the reproduced sand screen 4 and is positioned below the casing breaking point 8.

The utility model discloses a lateral drilling oil pipe 2, cup packer 3 and reproduction sand screen 4 of minor diameter have constituteed a reproduction tubular column, go into former well sand screen 5 under the reproduction sand screen 4 in this reproduction tubular column. Through releasing packer 1, hang whole reproduction tubular column in sidetracking small casing 10 and divide into two independent parts through cup packer 3, separate reproduction sand screen 4 and sidetracking small casing 10, can prevent firstly that stratum sand from getting into to increase the salvage degree of difficulty of later stage instrument behind the sand screen pipe section, secondly can prevent to take place the sidetracking small casing 10 of sleeve pipe rupture point 8 and go out water, cause the high water content of single well. The utility model provides a present sidetracking horizontal well production string under the circumstances that the small casing 10 of sidetracking and former well sand screen 5 all take place to break, the difficult problem that meets when carrying out mechanical sand control can make this type of sidetracking horizontal well reproduction, reduces the exploitation cost of crude oil.

On the basis of the first embodiment, the present invention also has the following embodiments

In a preferred embodiment, see figure 1, the packer 1 is a conventional packer and can be fixed in a well casing above a well casing hanger. When the casing fracture point 8 is positioned at the upper part of the small sidetracking casing 10, a conventional releasing packer can be selected as the releasing packer 1, and the releasing packer 1 is fixed in the original well casing. For example, the original well casing is a conventional 7-inch casing, and the type of the releasing packer 1 can be Y445-152; if the original well casing is a conventional 5 inch half casing, the type of the packer 1 can use Y445-115.

In a preferred embodiment, see fig. 2, the packer 1 is a special purpose lateral packer and can be set above the casing fracture point 8 in a lateral small casing 10 below the original well casing hanger. When the casing fracture point 8 is located at the lower part of the small sidetracking casing 10, a special releasing packer for the small sidetracking casing can be selected as the releasing packer 1, and the releasing packer 1 is fixed above the casing fracture point 8 in the small sidetracking casing 10. At the moment, a special releasing packer for a Y445-76 type sidetrack small casing can be selected as the releasing packer 1. So can shorten the length of whole card hourglass sand control reproduction tubular column, when making things convenient for whole tubular column to go into the operation, also make things convenient for the salvage operation of whole tubular column.

In a preferred embodiment, the cup packer 3 is arranged at more than one stage, each stage of cup packer 3 is connected through a connecting base pipe 33, and two ends of the cup packer 3 after connection are respectively connected with a connecting base pipe joint 31 and a connecting base pipe coupling 35; the connecting base pipe 33, the connecting base pipe joint 31 and the connecting base pipe coupling 35 are all made of precision metal alloy steel P110.

In a preferred embodiment, the cup packer 3 comprises a primary cup seal 32 and a secondary cup seal 34, the primary cup seal 32 and the secondary cup seal 34 are connected through a connecting base pipe 33, and the large-mouth ends of the primary cup seal 32 and the secondary cup seal 34 face the release packer 1; the connection base pipe joint 31 below the primary cup seal 32 can be in threaded connection with the reproduced sand screen 4, and the connection base pipe coupling 35 above the secondary cup seal 34 can be in threaded connection with the sidetracking oil pipe 2.

In a preferred embodiment, the reproduced sand screen 4 is provided with a sand screen base pipe 45, a sand screen 42 and an outer protective sleeve 41, one end of the sand screen base pipe 45 is provided with a sand screen coupling 44, the other end of the sand screen base pipe is provided with a sand screen joint 43, the sand screen 42 is installed between the outer protective sleeve 41 and the sand screen base pipe 45, and both the sand screen base pipe 45 and the outer protective sleeve 41 are provided with liquid outlet holes; the liquid outlet holes in the sand-filtering base pipe 45 and the outer protective sleeve 41 are radial holes. The liquid outlet holes arranged in the outer protective sleeve 41 are radial holes, so that the outer diameter of the outer protective sleeve 41 can be further reduced, and compared with the axial holes of the original protective sleeve, the outer protective sleeve has larger overflowing area and more liquid outlet amount.

In a preferred embodiment, every two regenerated sand filtering pipes 4 are in a group, and each group of regenerated sand filtering pipes 4 are connected through a safety joint 6; the maximum outer diameters of the reproduced sand filtering pipe 4 and the safety joint 6 are both 50mm, the maximum outer diameter of the sand filtering base pipe 45 is 36mm, and the maximum inner diameter of the sand filtering base pipe is 28mm; the sand filtering net 42 consists of more than one layer of flow guide net and more than one layer of filter net, the flow guide net and the filter net are alternately woven outside the sand filtering base pipe 45, and two ends of the flow guide net and the filter net are welded with the sand filtering base pipe 45; the sand screen base pipe 45, the sand screen coupling 44 and the sand screen joint 43 are all made of precision metal alloy steel P110. Accurate metal alloy steel P110 has guaranteed that reproduction sand screen 4 possesses higher intensity when possessing great internal diameter, can satisfy the production needs of card hourglass sand control reproduction tubular column. Meanwhile, only the reproduced sand filtering pipe 4 with the outer diameter of 50mm and the safety joint 6 ensure the normal running of the pipe column.

In a preferred embodiment, the upper end of the plug 7 can be connected with a tail pipe 11, and the length of the tail pipe 11 is more than one meter, so that the plug can play a role of sand setting.

Second embodiment

Referring to fig. 3 to 6, a lateral drilling horizontal well blocking leakage sand control reproduction tubular column comprises a releasing packer 1, a lateral drilling oil pipe 2, a safety joint 6 and a plug 7, wherein: the lower part of the releasing packer 1 is sequentially connected with a side drilling oil pipe 2, a reproduced sand filtering pipe 4 and a plug 7, a safety joint 6 is connected between the reproduced sand filtering pipes 4, and the plug 7 is connected with the bottom end of a stuck sand prevention reproduced pipe column; the external diameter of the reproduced sand screen 4 is smaller than the internal diameter of the original well casing hanger of the sidetracking horizontal well, the reproduced sand screen can be put into the original well sand screen 5 where the screen pipe breaking point 9 occurs, and the releasing packer 1 is fixed in the sidetracking small casing 10.

The utility model discloses in need not to use cup packer 3, can be used to only former well sand screen 5 in taking place cracked sidetracking horizontal well. A regenerated production string is formed by the sidetracking tubing 2 and the regenerated sand screen 4, and the regenerated sand screen 4 in the regenerated production string is lowered into the original well sand screen 5 where the screen rupture point 9 occurs. Through releasing packer 1, hang whole reproduction tubular column in sidetracking small casing 10, the utility model provides a machinery sand control problem under the cracked condition of former well sand screen 5 of present sidetracking horizontal well production tubular column can make this type of sidetracking horizontal well reproduction, reduces the exploitation cost of crude oil.

On the basis of the first embodiment, the present invention also has the following embodiments

In a preferred embodiment, every two regenerated sand filtering pipes 4 are in one group, and each group of regenerated sand filtering pipes 4 are connected through a safety joint 6; the maximum outer diameters of the reproduced sand filtering pipe 4 and the safety joint 6 are both 50mm, the maximum outer diameter of the sand filtering base pipe 45 is 36mm, and the maximum inner diameter of the sand filtering base pipe is 28mm; the sand filtering net 42 consists of more than one layer of flow guide net and more than one layer of filter net, the flow guide net and the filter net are alternately woven outside the sand filtering base pipe 45, and two ends of the flow guide net and the filter net are welded with the sand filtering base pipe 45; the sand screen base pipe 45, the sand screen coupling 44 and the sand screen joint 43 are all made of precision metal alloy steel P110. Accurate metal alloy steel P110 has guaranteed that reproduction sand screen 4 possesses higher intensity when possessing great internal diameter, can satisfy the production needs of card hourglass sand control reproduction tubular column. Meanwhile, only the reproduced sand filtering pipe 4 with the outer diameter of 50mm and the safety joint 6 ensure the normal running of the pipe column.

In a preferable embodiment, the releasing packer 1 is fixed in a small sidetrack casing 10 above a sand screen 5 of a raw well, and the releasing packer 1 is a releasing packer special for the small sidetrack casing; the upper end of the plug 7 is connected with a tail pipe 11, and the length of the tail pipe 11 is more than one meter, so that the plug can play a role in sand setting.

The utility model discloses further shorten the length of card hourglass sand control reproduction tubular column, both made things convenient for the operation of going into under the tubular column, made things convenient for the salvage operation of tubular column again. At the moment, a Y445-76 type special releasing packer for a side-drilling small casing can be selected as the releasing packer 1, so that the length of the whole stuck sand-prevention reproduction pipe column can be shortened, and the fishing operation of the whole pipe column is also facilitated while the running operation of the whole pipe column is facilitated.

The embodiments described above are merely exemplary embodiments, but the present invention is not limited to these embodiments, and those skilled in the art can make modifications without departing from the spirit and teaching of the present invention. Many variations, combinations, and modifications of the aspects disclosed herein are possible and are within the scope of the invention, which is not to be limited by the above description.

Claims (10)

1. The utility model provides a side-tracking horizontal well card leaks sand control and reproduces tubular column, includes packer, side-drilling oil pipe, safety joint and plug, characterized by: a lateral drilling oil pipe, a leather cup packer, a reproduced sand filtering pipe and a plug are sequentially connected below the releasing packer, a safety joint is connected between the reproduced sand filtering pipes, and the plug is connected to the bottom end of the stuck sand-prevention reproduced pipe column; the outer diameter of the reproduced sand screen pipe is smaller than the inner diameter of the original well casing hanger of the sidetracking horizontal well, the reproduced sand screen pipe can be lowered into the original well sand screen pipe with the screen pipe breaking point, and the leather cup packer is connected between the sidetracking oil pipe and the reproduced sand screen pipe and is located below the casing breaking point.

2. The lateral drilling horizontal well stuck sand control reproduction string of claim 1, wherein the back-off packer is a conventional back-off packer and can be fixed in the original well casing above the original well casing hanger.

3. The lateral drilling horizontal well stuck sand control reproduction tubular column of claim 1, characterized in that the back-off packer is a back-off packer dedicated to a lateral drilling small casing and can be fixed above a casing fracture point in the lateral drilling small casing below an original well casing hanger.

4. The lateral drilling horizontal well stuck leakage sand prevention reproduction pipe column of claim 2 or 3, characterized in that the cup packers are arranged at more than one stage, the cup packers at all stages are connected through a connecting base pipe, and two ends of the cup packers after connection are respectively connected with a connecting base pipe joint and a connecting base pipe coupling; the connecting base pipe, the connecting base pipe joint and the connecting base pipe coupling are all made of precision metal alloy steel P110.

5. The lateral drilling horizontal well blocking leakage sand control reproduction pipe column of claim 4, wherein the cup packer comprises a first-stage cup seal and a second-stage cup seal, the first-stage cup seal and the second-stage cup seal are connected through a connecting base pipe, and the large opening ends of the first-stage cup seal and the second-stage cup seal face the release packer; the connection base pipe joint below the one-level leather cup seals can be in threaded connection with the reproduction sand screen, and the connection base pipe coupling above the second-level leather cup seals can be in threaded connection with the sidetracking well oil pipe.

6. The lateral drilling horizontal well stuck sand control reproduction tubular column of claim 5, wherein the reproduction sand screen is provided with a sand screen base pipe, a sand screen net and an outer protective sleeve, one end of the sand screen base pipe is a sand screen pipe coupling, the other end of the sand screen pipe coupling is a sand screen pipe joint, the sand screen net is installed between the outer protective sleeve and the sand screen base pipe, and the sand screen base pipe and the outer protective sleeve are both provided with liquid outlet holes; the liquid outlet holes in the sand filtering base pipe and the outer protective sleeve are radial holes.

7. The lateral drilling horizontal well stuck leakage sand control reproduction pipe column as claimed in claim 6, wherein every two reproduction sand screens are in one group, and the reproduction sand screens in each group are connected through a safety joint; the maximum outer diameters of the reproduced sand filtering pipe and the safety joint are both 50mm, the maximum outer diameter of the sand filtering base pipe is 36mm, and the maximum inner diameter of the sand filtering base pipe is 28mm; the sand filtering net consists of more than one layer of flow guide net and more than one layer of filter net, the flow guide net and the filter net are alternately woven outside the sand filtering base pipe, and two ends of the flow guide net and the filter net are welded with the sand filtering base pipe; the sand-filtering base pipe, the sand-filtering pipe coupling and the sand-filtering pipe joint are all made of precision metal alloy steel P110.

8. The lateral drilling horizontal well stuck sand control reproduction tubular column as claimed in claim 1, 2 or 3, characterized in that the upper end of the plug can be connected with a tail pipe, and the length of the tail pipe is more than one meter.

9. The utility model provides a side-tracking horizontal well card leaks sand control and reproduces tubular column, includes packer, side-drilling oil pipe, safety joint and plug, characterized by: the lower part of the releasing packer is sequentially connected with a side drilling oil pipe, a reproduced sand filtering pipe and a plug, a safety joint is connected between the reproduced sand filtering pipes, and the plug is connected with the bottom end of the stuck sand-prevention reproduced pipe column; the outer diameter of the reproduced sand screen pipe is smaller than the inner diameter of the original well casing hanger of the sidetracking horizontal well, the reproduced sand screen pipe can be put into the original well sand screen pipe with a screen pipe breaking point, and the releasing packer is fixed in the sidetracking small casing.

10. The lateral drilling horizontal well stuck sand control reproduction tubular column of claim 9, wherein the releasing packer is fixed in a lateral drilling small casing above an original well sand screen, and the releasing packer is a releasing packer special for the lateral drilling small casing; the upper end of the plug is connected with a tail pipe, and the length of the tail pipe is more than one meter.

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