CN204252928U - The center management and control liquid tubing string of horizontal well - Google Patents

The center management and control liquid tubing string of horizontal well Download PDF

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Publication number
CN204252928U
CN204252928U CN201420681453.0U CN201420681453U CN204252928U CN 204252928 U CN204252928 U CN 204252928U CN 201420681453 U CN201420681453 U CN 201420681453U CN 204252928 U CN204252928 U CN 204252928U
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packer
oil pipe
center
pipeline section
section
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CN201420681453.0U
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韩光耀
孙新
谢斌
王中武
陈禹欣
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Petrochina Co Ltd
China Petroleum and Natural Gas Co Ltd
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China Petroleum and Natural Gas Co Ltd
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Abstract

The utility model provides a kind of center management and control liquid tubing string of horizontal well.The horizontal segment that horizontal well comprises straight well section and is communicated with straight well section, center management and control liquid tubing string comprises: packer, and packer is arranged on the inside of horizontal well, and packer has oil recovery passage and has suspension, packing, function of giving up; Center oil pipe, center oil pipe is arranged on the lower end of packer and extends in horizontal segment, the oil recovery channel connection of center oil pipe and packer, and center oil pipe has porose section and imperforate section, porose section is provided with multiple through hole, and through hole is arranged on the tube wall of porose section of center oil pipe; Closeouts, closeouts shutoff is in one end away from packer of center oil pipe.According to the utility model, the object of horizontal well decreasing water cut and increasing oil can be realized.

Description

The center management and control liquid tubing string of horizontal well
Technical field
The utility model relates to a kind of center management and control liquid tubing string of horizontal well.
Background technology
In prior art, horizontal well with bottom water reservoir is widely applied, but in manufacturing process, most of horizontal well shows the problems such as rate of water cut increase is fast, oil production fall is large, has had a strong impact on horizontal well with bottom water reservoir development effectiveness.
Research shows, completion methods of horizontal wells and completion parameter enter to have significant impact to the ridge of end water.The completion mode adopted due to former horizontal well is single, mainly independent sieve tube completion, and do not have the requirement considering to control water and middle and later periods water detection water blockoff in advance, cause very large puzzlement to later stage measure and underground work, water detection water blockoff difficulty is large, and measure effect is poor.A lot of well does not possess machinery or chemical plugging condition in the High water cut stage, and horizontal well control outlet capacity is poor.
Therefore, design one can meet controls water requirement in advance, the water control pipe post technique of foundation can be provided to be very necessary for the water detection water-blocking operation in later stage again, this will conscientiously strengthen bottom water reservoir water-control oil-increasing, greatly improve the standard well exploitation effect and oil field whole development benefit.
Utility model content
The utility model object is the center management and control liquid tubing string providing a kind of horizontal well, can realize the object of horizontal well decreasing water cut and increasing oil.
The utility model provides a kind of center management and control liquid tubing string of horizontal well, the horizontal segment that horizontal well comprises straight well section and is communicated with straight well section, center management and control liquid tubing string comprises: packer, packer is arranged on the inside of horizontal well, and packer has oil recovery passage and has suspension, packing, function of giving up; Center oil pipe, center oil pipe is arranged on the lower end of packer and extends in horizontal segment, the oil recovery channel connection of center oil pipe and packer, and center oil pipe has porose section and imperforate section, porose section is provided with multiple through hole, and through hole is arranged on the tube wall of porose section of center oil pipe; Closeouts, closeouts shutoff is in one end away from packer of center oil pipe.
Further, center management and control liquid tubing string also comprises oil tool, and oil tool is positioned at the inside of straight well section, oil tool be arranged on packer top and and packer interval arrange.
Further, multiple through hole centrally oil pipe tube wall interval arrange.
Further, center management and control liquid tubing string also comprises one or more centralizer, and centralizer is arranged on the periphery of center oil pipe, multiple centralizer centrally oil pipe length direction interval arrange.
Further, center management and control liquid tubing string also comprises connected pipes, and connected pipes is arranged between packer and center oil pipe, and one end of connected pipes and the oil recovery channel connection of packer, the other end of connected pipes is communicated with center oil pipe.
Further, center management and control liquid tubing string also comprises safe connection equipment, safe connection equipment is arranged between connected pipes and center oil pipe, safe connection equipment is positioned at one end of the close packer of horizontal segment, one end of the close packer of safe connection equipment is communicated with connected pipes, and one end away from packer of safe connection equipment is communicated with center oil pipe.
Further, center oil pipe comprises at least one first pipeline section and at least one second pipeline section, wherein, one end away from the second pipeline section of first the first pipeline section is connected with packer, closeouts shutoff in the end one end away from packer of first pipeline section or shutoff is in one end away from packer of the second pipeline section, multiple through hole is arranged on the tube wall of the second pipeline section, and the second pipeline section forms porose section, and the first pipeline section forms imperforate section.
Further, center oil pipe comprises multiple first pipeline section and multiple second pipeline section, and multiple first pipeline section and multiple second pipeline section are arranged alternately.
Further, center oil pipe comprises two the first pipeline sections and second pipeline section, second pipeline section is between two the first pipeline sections, and one end away from the second pipeline section of first the first pipeline section is connected with packer, and closeouts shutoff is in one end away from packer of second the first pipeline section.
Further, the second pipeline section is positioned at the oil-producing area of horizontal segment, and the first pipeline section is positioned at the exhalant region of horizontal segment.
According to the center management and control liquid tubing string of horizontal well of the present utility model, the horizontal segment that horizontal well comprises straight well section and is communicated with straight well section, center management and control liquid tubing string comprises: packer, and packer is arranged on the inside of horizontal well, and packer has oil recovery passage and has suspension, packing, function of giving up; Center oil pipe, center oil pipe is arranged on the lower end of packer and extends in horizontal segment, the oil recovery channel connection of center oil pipe and packer, and center oil pipe has porose section and imperforate section, porose section is provided with multiple through hole, and through hole is arranged on the tube wall of porose section of center oil pipe; Closeouts, closeouts shutoff is in one end away from packer of center oil pipe.
Above-mentionedly to arrange, the imperforate section of center oil pipe is positioned at the exhalant region of horizontal segment, porose section of center oil pipe is positioned at the oil-producing area of horizontal segment, the flowing frictional resistance of fluid is less, first fluid enter the inside of center oil pipe by through hole, water needs flowing one segment distance just can enter in the oil pipe of center by through hole, thus frictional resistance is larger, the center oil pipe of utilization improves the uniformity of the production profile of horizontal well, therefore the liquid-producing capacity of horizontal well exhalant region can be made to lower, realize the technique effect of horizontal well decreasing water cut and increasing oil.
Accompanying drawing explanation
The accompanying drawing forming a application's part is used to provide further understanding of the present utility model, and schematic description and description of the present utility model, for explaining the utility model, is not formed improper restriction of the present utility model.In the accompanying drawings:
Fig. 1 is in main TV structure schematic diagram into well state according to the center management and control liquid tubing string of the horizontal well of the utility model embodiment one;
Fig. 2 is the main TV structure schematic diagram being in oil recovery state according to the center management and control liquid tubing string of the horizontal well of the utility model embodiment one.
Reference numeral: 1, packer; 10, straight well section;
2, center oil pipe; 30, horizontal segment;
40, lower curved section; 20, through hole;
21, the first pipeline section; 22, the second pipeline section;
3, closeouts; 4, centralizer;
5, connected pipes; 6, safe connection equipment;
7, oil tool.
Detailed description of the invention
Below with reference to the accompanying drawings and describe the utility model in detail in conjunction with the embodiments.It should be noted that, when not conflicting, the embodiment in the application and the feature in embodiment can combine mutually.
Embodiment one
As depicted in figs. 1 and 2, the utility model embodiment one provides a kind of center management and control liquid tubing string of horizontal well.The horizontal segment 30 that horizontal well comprises straight well section 10 and is communicated with straight well section 10, center management and control liquid tubing string comprises packer 1, center oil pipe 2 and closeouts 3.Horizontal well also comprises lower curved section 40, and lower curved section 40 is arranged between straight well section 10 and horizontal segment 30.
Wherein, packer 1 is arranged on the inside of horizontal well, and packer 1 has oil recovery passage and has suspension, packing, function of giving up; Center oil pipe 2 is arranged on the lower end of packer 1 and extends in horizontal segment 30, the oil recovery channel connection of center oil pipe 2 and packer 1, center oil pipe 2 has porose section and imperforate section, and porose section is provided with multiple through hole 20, and through hole 20 is arranged on the tube wall of porose section of center oil pipe 2; Closeouts 3 shutoff is in one end away from packer 1 of center oil pipe 2.
In embodiment of the present utility model, packer 1 is arranged on the inside of straight well section 10.Above-mentionedly to arrange, the imperforate section of center oil pipe 2 is positioned at the exhalant region of horizontal segment, porose section of center oil pipe 2 is positioned at the oil-producing area of horizontal segment 30, the flowage friction of fluid is less, first fluid enter the inside of center oil pipe 2 by through hole 20, water needs flowing one segment distance just can enter in center oil pipe 2 by through hole, thus frictional resistance is larger, center oil pipe 2 is utilized to change the uniformity of production profile, therefore the liquid-producing capacity of horizontal well exhalant region can be made to lower, realize the technique effect of horizontal well decreasing water cut and increasing oil.
Particularly, the packer of mechanical type or fluid pressure type all can as the packer 1 of utility model embodiment one, as long as namely can realize setting with deblocking, hang, the packer of the effect of giving up is all passable.
As shown in Figure 2, in the utility model embodiment one, center management and control liquid tubing string also comprises oil tool 7, and oil tool 7 is positioned at the inside of straight well section 10, oil tool 7 be arranged on packer 1 top and and packer 1 interval arrange.
By above-mentioned setting, the fluid utilizing oil tool 7 to extract out to be positioned at center oil pipe 2 is to realize recovering the oil.
As depicted in figs. 1 and 2, multiple through hole 20 centrally oil pipe 2 tube wall interval arrange.
Above-mentionedly to arrange, the tube wall that multiple through hole 20 is arranged on center oil pipe 2 can be convenient to fluid and enter in center oil pipe 2, to facilitate follow-up oil extraction operation.
In embodiment one of the present utility model, for ease of processing, multiple through hole 20 centrally oil pipe 2 even tube wall arrange.Certainly, in the embodiment that the utility model does not provide, the non-homogeneous setting of tube wall according to actual needs multiple through hole 20 can also being arranged to centrally oil pipe 2.
In the utility model embodiment one, particularly, center management and control liquid tubing string comprises multiple first hole group and multiple second hole group.The circumference of multiple first hole group and multiple second hole group centrally oil pipe 2 is arranged alternately.
Wherein, on the length direction of the first hole group and the second Kong Zu center oil pipe 2, interval is arranged.First hole group comprises spaced first hole of length direction of multiple centrally oil pipe 2, and the second hole group comprises spaced second hole of length direction of multiple centrally oil pipe 2.
Wherein, for ease of processing and manufacture, the size in the first hole is identical with the size in the second hole.The first above-mentioned hole and the second hole form aforesaid through hole 20.
As depicted in figs. 1 and 2, in the utility model embodiment one, center management and control liquid tubing string also comprises one or more centralizer 4, and centralizer 4 is arranged on the periphery of center oil pipe 2, multiple centralizer 4 centrally oil pipe 2 length direction at a certain distance interval arrange.
Above-mentionedly to arrange, utilize centralizer 4 center oil pipe 2 can be made to be in the center of horizontal segment, improve control liquid effect.
As depicted in figs. 1 and 2, in the utility model embodiment one, center oil pipe 2 comprises at least one first pipeline section 21 and at least one second pipeline section 22, wherein, one end away from the second pipeline section 22 of first the first pipeline section 21 is connected with packer 1, closeouts 3 shutoff in the end one end away from packer 1 of first pipeline section 21 or shutoff is in one end away from packer 1 of the second pipeline section 22, multiple through hole 20 is arranged on the tube wall of the second pipeline section 22, second pipeline section 22 forms porose section, and the first pipeline section 21 forms imperforate section.
In the utility model embodiment one, particularly, center oil pipe 2 comprises two the first pipeline sections 21 and second pipeline section 22, second pipeline section 22 is between two the first pipeline sections 21, one end away from the second pipeline section 22 of first the first pipeline section 21 is connected with packer 1, and closeouts 3 shutoff is in one end away from packer 1 of second the first pipeline section 21.
Particularly, in the utility model embodiment one, center management and control liquid tubing string comprises four centralizers 4.First centralizer is set in the periphery of close first pipeline section 21 of packer 1 and the connecting portion of the second pipeline section 22, second centralizer and the 3rd centralizer are all positioned at the periphery of the second pipeline section 22, the periphery of the connecting portion of the 4th centralizer between the second pipeline section 22 and second the first pipeline section 21.
By above-mentioned setting, the second pipeline section 22 can be made to be in the center of horizontal segment better, be convenient to fluid enters the second pipeline section 22 inside from through hole 20, improve control liquid effect.
As depicted in figs. 1 and 2, in the utility model embodiment one, the second pipeline section 22 is positioned at the oil-producing area of horizontal segment 30, and the first pipeline section 21 is positioned at the exhalant region of horizontal segment 30.
Above-mentionedly to arrange, when carrying out oil extraction operation, arrange because the second pipeline section 22 is corresponding with the oil-producing area of horizontal segment 30, first pipeline section 21 is corresponding with the exhalant region of horizontal segment 30 to be arranged, therefore, the flow path of fluid is shorter, the flowage friction resistance of liquid is less, first fluid enter the inside of the second pipeline section 22 by through hole 20, water flows and reaches through hole 20 place of the second pipeline section 22 after a segment distance in horizontal segment 30, then just can enter the inside of the second pipeline section 22, the flow path of current is longer, and flowage friction resistance is larger.
In said process, by center oil pipe 2, have adjusted the pressure distribution of the liquid (comprising fluid and water) of horizontal segment 30 inside, thus the liquid-producing capacity of horizontal well exhalant region is lowered, achieve the technique effect of horizontal well decreasing water cut and increasing oil.
The center management and control liquid tubing string that Fig. 1 shows the horizontal well of the utility model embodiment one is in the schematic diagram into well state.As shown in Figure 1, in the utility model embodiment one, packer 1 comprises packing element, and in the process transferring packer 1, packer 1 is in the state of not setting, and between the packing element of packer 1 and the borehole wall of horizontal well, interval is arranged.
The center management and control liquid tubing string that Fig. 2 shows the horizontal well of the utility model embodiment one is in the schematic diagram of oil recovery state.As shown in Figure 2, in the utility model embodiment one, when central tube control liquid tubing string is in oil recovery state, packer 1 sets straight well section 10 inside (namely packer 1 is in running order, and the packing element of packer 1 is used for the borehole wall of sealed horizontal well and the gap of packer 1 diameter) at horizontal well.
As depicted in figs. 1 and 2, in the utility model embodiment one, center management and control liquid tubing string also comprises connected pipes 5, and connected pipes 5 is arranged between packer 1 and center oil pipe 2, one end of connected pipes 5 and the oil recovery channel connection of packer 1, the other end of connected pipes 5 is communicated with center oil pipe 2.
Above-mentionedly to arrange, utilize connected pipes 5 fluid and/or water that are positioned at center oil pipe 2 can be delivered to the oil recovery passage of packer 1.
As depicted in figs. 1 and 2, in the utility model embodiment one, center management and control liquid tubing string also comprises safe connection equipment 6, safe connection equipment 6 is arranged between connected pipes 5 and center oil pipe 2, safe connection equipment 6 is positioned at one end of the close packer 1 of horizontal segment 30, one end of the close packer 1 of safe connection equipment 6 is communicated with connected pipes 5, and one end away from packer 1 of safe connection equipment 6 is communicated with center oil pipe 2.
Above-mentionedly to arrange, when center oil pipe 2 by sand bury cannot propose time, utilize safe connection equipment 6 can to facilitate the parts such as follow-up taking-up center oil pipe 2, centralizer 4.
The utility model embodiment one additionally provides a kind of control liquid pipe string technology of horizontal well, control liquid pipe string technology carries out control water according to aforesaid center management and control liquid tubing string, horizontal well comprises straight well section 10 and horizontal segment 30, center management and control liquid tubing string comprises packer 1, center oil pipe 2 and closeouts 3, center oil pipe 2 is arranged on the downstream of packer 1, closeouts 3 shutoff is in one end away from packer 1 of center oil pipe 2, and control liquid pipe string technology comprises the following steps:
According to geologic information and the creation data of horizontal well, determine exhalant region and the oil-producing area of horizontal well;
Packer 1, center oil pipe 2 are connected successively with closeouts 3, centralizer;
Transfer packer 1 and center oil pipe 2, to make packer 1 be positioned at straight well section 10, the imperforate section of center oil pipe 2 is positioned at exhalant region, and porose section of center oil pipe 2 is positioned at oil-producing area;
Set packer 1 is also given up.
Transfer in the process of packer 1 and center oil pipe 2 above-mentioned, closeouts 3 also serves the effect of guiding.
In the utility model embodiment one, after the step of set packer 1, center management and control liquid tubing string comprises oil tool 7, oil tool 7 be arranged on packer 1 top and and packer 1 interval arrange, control liquid pipe string technology is further comprising the steps of:
Oil tool 7 is transferred in straight well section 10.
By above-mentioned setting, second pipeline section 22 of center oil pipe 2 is positioned at the exhalant region of horizontal segment, first pipeline section 21 of center oil pipe 2 is positioned at the oil-producing area of horizontal segment 30, the flow path of fluid is shorter, flowage friction resistance is little, first fluid enter the inside of center oil pipe 2 by through hole 20, water needs flowing one segment distance just can enter in center oil pipe 2 by through hole 20, center oil pipe 2 is utilized to improve the uniformity of production profile, therefore the liquid-producing capacity of horizontal well exhalant region can be made to lower, realize the technique effect of horizontal well decreasing water cut and increasing oil.
Embodiment two
In embodiment two of the present utility model, horizontal well comprises straight well section 10, lower curved section 40 and horizontal segment 30, and one end of lower curved section 40 is communicated with straight well section 10, and the other end of lower curved section 40 is communicated with horizontal segment 30.
Center management and control liquid tubing string comprises packer 1, center oil pipe 2 and closeouts 3.Wherein, packer 1 is arranged on the inside of horizontal well, and packer 1 has oil recovery passage and has suspension, packing, function of giving up; Center oil pipe 2 is arranged on the lower end of packer 1 and is positioned at the inside of horizontal segment 30 and extends at horizontal segment 30, the oil recovery channel connection of center oil pipe 2 and packer 1, center oil pipe 2 has porose section and imperforate section, porose section is provided with multiple through hole 20, and through hole 20 is arranged on the tube wall of porose section of center oil pipe 2; Closeouts 3 shutoff is in one end away from packer 1 of center oil pipe 2.
In embodiment two of the present utility model, packer 1 is arranged on the inside of straight well section 10.Above-mentionedly to arrange, the imperforate section of center oil pipe 2 is positioned at the exhalant region of horizontal segment, porose section of center oil pipe 2 is positioned at the oil-producing area of horizontal segment 30, the flowage friction of fluid is less, first fluid enter the inside of center oil pipe 2 by through hole 20, water needs flowing one segment distance just can enter in center oil pipe 2 by through hole, thus frictional resistance is larger, center oil pipe 2 is utilized to change the uniformity of production profile, therefore the liquid-producing capacity of horizontal well exhalant region can be made to lower, realize the technique effect of horizontal well decreasing water cut and increasing oil.
The present embodiment two is with the difference of embodiment one: packer 1 is arranged on the inside of lower curved section 40.
Embodiment three
In embodiment three of the present utility model, center oil pipe 2 comprises at least one first pipeline section 21 and at least one second pipeline section 22, wherein, one end away from the second pipeline section 22 of first the first pipeline section 21 is connected with packer 1, closeouts 3 shutoff in the end one end away from packer 1 of first pipeline section 21 or shutoff is in one end away from packer 1 of the second pipeline section 22, multiple through hole 20 is arranged on the tube wall of the second pipeline section 22, second pipeline section 22 forms porose section, and the first pipeline section 21 forms imperforate section.
Embodiment three of the present utility model is with the difference of embodiment one:
Center oil pipe 2 comprises multiple first pipeline section 21 and multiple second pipeline section 22, and multiple first pipeline section 21 and multiple second pipeline section 22 are arranged alternately.We can replace the length of configuration first pipeline section 21 and the second pipeline section 22 and quantity to meet actual needs according to different well ' s conditions.
Embodiment four
The utility model embodiment four is with the difference of embodiment one:
In the utility model embodiment four, center management and control liquid tubing string comprises more than four centralizers 4, centralizer 4 centrally oil pipe 2 length direction uniform intervals arrange.Above-mentionedly to arrange, can ensure that center oil pipe 2 is in the center of horizontal segment better, improve control liquid effect.
As can be seen from above description, embodiment one of the present utility model achieves following technique effect: the horizontal segment that horizontal well comprises straight well section and is communicated with straight well section, center management and control liquid tubing string comprises packer, center oil pipe and closeouts, wherein, packer is arranged on the inside of the straight well section of horizontal well, and packer has oil recovery passage and has suspension, packing, function of giving up, center oil pipe is arranged on the lower end of packer and extends in horizontal segment, the oil recovery channel connection of center oil pipe and packer, and center oil pipe has porose section and imperforate section, and porose section is provided with multiple through hole, and through hole is arranged on the tube wall of porose section of center oil pipe, closeouts shutoff is in one end away from packer of center oil pipe, center oil pipe comprises two the first pipeline sections and second pipeline section, second pipeline section is between two the first pipeline sections, one end away from the second pipeline section of first the first pipeline section is connected with packer, and closeouts shutoff is in one end away from packer of second the first pipeline section, when carrying out oil extraction operation, arrange because the second pipeline section is corresponding with the oil-producing area of horizontal segment, two the first pipeline sections are all corresponding with the exhalant region of horizontal segment to be arranged, therefore, the flowage friction of fluid is less, first fluid enter the inside of the second pipeline section by through hole, water flows and reaches the through hole of the second pipeline section after a segment distance in horizontal segment, then the inside of the second pipeline section can just be entered, thus, the flowage friction of current is larger, in said process, by center oil pipe, have adjusted the pressure distribution of the liquid of horizontal segment inside, thus the liquid-producing capacity of horizontal well exhalant region is lowered, achieve the technique effect of horizontal well decreasing water cut and increasing oil.
Further, center management and control liquid tubing string comprises four centralizers, first centralizer is set in the periphery of the connecting portion of first the first pipeline section and the second pipeline section, second centralizer and the 3rd centralizer are all positioned at the periphery of the second pipeline section, the periphery of the connecting portion of the 4th centralizer between the second pipeline section and second the first pipeline section; By above-mentioned setting, the second pipeline section can be made to be in the center of horizontal segment better, be convenient to fluid and enter the inside of the second pipeline section from through hole to improve control liquid effect.
These are only preferred embodiment of the present utility model, be not limited to the utility model, for a person skilled in the art, the utility model can have various modifications and variations.All within spirit of the present utility model and principle, any amendment done, equivalent replacement, improvement etc., all should be included within protection domain of the present utility model.

Claims (10)

1. a center management and control liquid tubing string for horizontal well, the horizontal segment (30) that horizontal well comprises straight well section (10) and is communicated with described straight well section (10), is characterized in that, described center management and control liquid tubing string comprises:
Packer (1), described packer (1) is arranged on the inside of described horizontal well, and described packer (1) has oil recovery passage and has suspension, packing, function of giving up;
Center oil pipe (2), described center oil pipe (2) is arranged on the lower end of described packer (1) and extends in described horizontal segment (30), the described oil recovery channel connection of described center oil pipe (2) and described packer (1), described center oil pipe (2) has porose section and imperforate section, described porose section is provided with multiple through hole (20), and described through hole (20) is arranged on the tube wall of described porose section of described center oil pipe (2);
Closeouts (3), described closeouts (3) shutoff is in the one end away from described packer (1) at described center oil pipe (2).
2. center management and control liquid tubing string according to claim 1, it is characterized in that, described center management and control liquid tubing string also comprises oil tool (7), described oil tool (7) is positioned at the inside of described straight well section (10), described oil tool (7) be arranged on described packer (1) top and and described packer (1) interval arrange.
3. center management and control liquid tubing string according to claim 1, is characterized in that, multiple described through hole (20) is arranged along the tube wall interval at described center oil pipe (2).
4. center management and control liquid tubing string according to claim 1, it is characterized in that, described center management and control liquid tubing string also comprises one or more centralizer (4), described centralizer (4) is arranged on the periphery at described center oil pipe (2), and multiple described centralizer (4) is arranged along the length direction interval at described center oil pipe (2).
5. center management and control liquid tubing string according to claim 1, it is characterized in that, described center management and control liquid tubing string also comprises connected pipes (5), described connected pipes (5) is arranged between described packer (1) and described center oil pipe (2), one end of described connected pipes (5) and the described oil recovery channel connection of described packer (1), the other end of described connected pipes (5) is communicated with described center oil pipe (2).
6. center management and control liquid tubing string according to claim 5, it is characterized in that, described center management and control liquid tubing string also comprises safe connection equipment (6), described safe connection equipment (6) is arranged between described connected pipes (5) and described center oil pipe (2), described safe connection equipment (6) is positioned at one end of the close described packer (1) of described horizontal segment (30), one end of the close described packer (1) of described safe connection equipment (6) is communicated with described connected pipes (5), one end away from described packer (1) of described safe connection equipment (6) is communicated with described center oil pipe (2).
7. center management and control liquid tubing string according to any one of claim 1 to 6, it is characterized in that, described center oil pipe (2) comprises at least one first pipeline section (21) and at least one the second pipeline section (22), wherein, one end away from described second pipeline section (22) of first described first pipeline section (21) is connected with described packer (1), described closeouts (3) shutoff in the end one end away from described packer (1) of described first pipeline section (21) or shutoff is in one end away from described packer (1) of described second pipeline section (22), multiple described through hole (20) is arranged on the tube wall of described second pipeline section (22), described second pipeline section (22) forms described porose section, described first pipeline section (21) forms described imperforate section.
8. center management and control liquid tubing string according to claim 7, it is characterized in that, described center oil pipe (2) comprises multiple described first pipeline section (21) and multiple described second pipeline section (22), and multiple described first pipeline section (21) and multiple described second pipeline section (22) are arranged alternately.
9. center management and control liquid tubing string according to claim 7, it is characterized in that, described center oil pipe (2) comprises two described first pipeline sections (21) and described second pipeline section (22), described second pipeline section (22) is positioned between two described first pipeline sections (21), one end away from described second pipeline section (22) of first described first pipeline section (21) is connected with described packer (1), and described closeouts (3) shutoff is in one end away from described packer (1) of second described first pipeline section (21).
10. center management and control liquid tubing string according to claim 7, it is characterized in that, described second pipeline section (22) is positioned at the oil-producing area of described horizontal segment (30), and described first pipeline section (21) is positioned at the exhalant region of described horizontal segment (30).
CN201420681453.0U 2014-11-06 2014-11-06 The center management and control liquid tubing string of horizontal well Active CN204252928U (en)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105625978A (en) * 2014-11-06 2016-06-01 中国石油天然气股份有限公司 Central tube liquid control tubular column of horizontal well and liquid control tubular column technique of horizontal well
CN105735896A (en) * 2016-02-02 2016-07-06 中铁隧道集团一处有限公司 Method for conducting ultra-deep horizontal hole drilling by means of centering device set
CN106837262A (en) * 2017-04-14 2017-06-13 张兴 Horizontal well completion tubular pile and horizontal well

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105625978A (en) * 2014-11-06 2016-06-01 中国石油天然气股份有限公司 Central tube liquid control tubular column of horizontal well and liquid control tubular column technique of horizontal well
CN105625978B (en) * 2014-11-06 2018-04-03 中国石油天然气股份有限公司 The central tube draining tubing string of horizontal well and the draining pipe string technology of horizontal well
CN105735896A (en) * 2016-02-02 2016-07-06 中铁隧道集团一处有限公司 Method for conducting ultra-deep horizontal hole drilling by means of centering device set
CN106837262A (en) * 2017-04-14 2017-06-13 张兴 Horizontal well completion tubular pile and horizontal well

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