CN105625978A - Central tube liquid control tubular column of horizontal well and liquid control tubular column technique of horizontal well - Google Patents
Central tube liquid control tubular column of horizontal well and liquid control tubular column technique of horizontal well Download PDFInfo
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- CN105625978A CN105625978A CN201410645402.7A CN201410645402A CN105625978A CN 105625978 A CN105625978 A CN 105625978A CN 201410645402 A CN201410645402 A CN 201410645402A CN 105625978 A CN105625978 A CN 105625978A
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Abstract
The invention provides a central tube liquid control tubular column of a horizontal well and a liquid control tubular column technique of the horizontal well. The horizontal well comprises a vertical well section and a horizontal section communicating with the vertical well section. The central tube liquid control tubular column comprises a packer, a central oil tube and a blocking part, wherein the packer is arranged in the horizontal well; the packer is provided with an oil recovery channel and has the functions of suspension, packing and releasing; the central oil tube is arranged at the lower end of the packer and extends in the horizontal section; the central oil tube communicates with the oil recovery channel of the packer and is provided with a porous section and an imporous section, and the porous section is provided with a plurality of through holes; the through holes are formed in the tube wall of the porous section of the central oil tube; and the blocking part blocks the end, away from the packer, of the central oil tube. According to the central tube liquid control tubular column of the horizontal well and the liquid control tubular column technique of the horizontal well, the purposes of water reducing and oil increasing of the horizontal well can be achieved.
Description
Technical field
The present invention relates to the control liquid pipe string technology of the center management and control liquid tubing string of a kind of horizontal well and horizontal well.
Background technology
In prior art, horizontal well with bottom water reservoir is widely applied, but in production process, major part horizontal well shows the problems such as rate of water cut increase is fast, oil production fall is big, has had a strong impact on horizontal well with bottom water reservoir development effectiveness.
Research shows, the ridge of bottom water is entered to have significant impact by completion methods of horizontal wells and completion parameter. The completion mode adopted due to former horizontal well is single, mainly independent sieve tube completion, it does not have consider the requirement of control water and middle and late stage water detection water blockoff in advance, later stage measure and underground work cause very big puzzlement, and water detection water blockoff difficulty is big, and measure effect is poor. A lot of wells do not possess mechanically or chemically Sealing Conditions in the High water cut stage, and horizontal well control outlet capacity is poor.
Therefore, design one can meet control water requirement in advance, being very necessary for the water control pipe post technique of the water detection water-blocking operation offer foundation in later stage again, this will conscientiously strengthen bottom water reservoir water-control oil-increasing, be greatly improved horizontal wells effect and oil field whole development benefit.
Summary of the invention
Present invention aim at providing the control liquid pipe string technology of the center management and control liquid tubing string of a kind of horizontal well and horizontal well, it is possible to achieve the purpose of horizontal well decreasing water cut and increasing oil.
The invention provides the center management and control liquid tubing string of a kind of horizontal well, horizontal well includes straight well section and the horizontal segment connected with straight well section, management and control liquid tubing string in center includes: packer, and packer is arranged on the inside of horizontal well, packer have oil recovery passage and there is suspension, insulate, 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, on the tube wall of porose section of the centrally disposed oil pipe of through hole; Closeouts, closeouts blocks in one end away from packer of center oil pipe.
Further, management and control liquid tubing string in center also includes oil tool, and oil tool is positioned at the inside of straight well section, and oil tool is arranged on top and the packer interval setting of packer.
Further, multiple through holes are arranged along the tube wall interval of center oil pipe.
Further, management and control liquid tubing string in center also includes one or more centralizer, and centralizer is arranged on the periphery of center oil pipe, and multiple centralizers are arranged along the length direction interval of center oil pipe.
Further, management and control liquid tubing string in center also includes connected pipes, and connected pipes is arranged between packer and center oil pipe, and the oil recovery channel connection of one end of connected pipes and packer, the other end of connected pipes connects with center oil pipe.
Further, management and control liquid tubing string in center also includes 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 connects with connected pipes, and one end away from packer of safe connection equipment connects with center oil pipe.
Further, center oil pipe includes 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, one end away from packer of closeouts closure in the end first pipeline section or closure are in one end away from packer of the second pipeline section, multiple through holes are 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 includes multiple first pipeline section and multiple second pipeline section, multiple first pipeline sections and multiple second pipeline section and is arranged alternately.
Further, center oil pipe includes 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 blocks 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 another aspect of the present invention, provide the control liquid pipe string technology of a kind of horizontal well, control liquid pipe string technology carries out control water according to aforesaid center management and control liquid tubing string, horizontal well includes straight well section and horizontal segment, management and control liquid tubing string in center includes packer, center oil pipe and closeouts, center oil pipe is arranged on the downstream of packer, closeouts blocks in one end away from packer of center oil pipe, control liquid pipe string technology comprises the following steps: according to the geologic information of horizontal well and creation data, it is determined that the exhalant region of horizontal well and oil-producing area; Packer, center oil pipe and closeouts are sequentially carried out connection; Transferring packer and center oil pipe, so that packer is positioned at straight well section, the imperforate section of center oil pipe is positioned at exhalant region, and porose section of center oil pipe is positioned at oil-producing area; Set packer is also given up.
Further, after the step of set packer, management and control liquid tubing string in center includes oil tool, oil tool be arranged on packer top and and packer interval arrange, control liquid pipe string technology further comprising the steps of: oil tool is transferred to straight well section.
The center management and control liquid tubing string of the horizontal well according to the present invention, horizontal well includes straight well section and the horizontal segment connected with straight well section, management and control liquid tubing string in center includes: packer, and packer is arranged on the inside of horizontal well, packer have oil recovery passage and there is suspension, insulate, 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, on the tube wall of porose section of the centrally disposed oil pipe of through hole; Closeouts, closeouts blocks in one end away from packer of center oil pipe.
Above-mentioned 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, fluid first passes through through hole and enters the inside of center oil pipe, water needs flowing one segment distance just can pass through in the oil pipe of through hole entrance center, thus frictional resistance is bigger, the center oil pipe of utilization improves the uniformity of the production profile of horizontal well, therefore the liquid-producing capacity that can make horizontal well exhalant region lowers, it is achieved the technique effect of horizontal well decreasing water cut and increasing oil.
Accompanying drawing explanation
The accompanying drawing constituting the part of the application is used for providing a further understanding of the present invention, and the schematic description and description of the present invention is used for explaining the present invention, is not intended that inappropriate limitation of the present invention. In the accompanying drawings:
The center management and control liquid tubing string that Fig. 1 is the horizontal well of according to embodiments of the present invention is in the main TV structure schematic diagram into well state;
Fig. 2 is the main TV structure schematic diagram that the center management and control liquid tubing string of the horizontal well of according to embodiments of the present invention is in oil recovery state.
Accompanying drawing labelling: 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
Describe the present invention below with reference to the accompanying drawings and in conjunction with the embodiments in detail. It should be noted that when not conflicting, the embodiment in the application and the feature in embodiment can be mutually combined.
Embodiment one
As depicted in figs. 1 and 2, the embodiment of the present invention one provides the center management and control liquid tubing string of a kind of horizontal well. Horizontal well includes straight well section 10 and the horizontal segment 30 connected with straight well section 10, and management and control liquid tubing string in center includes packer 1, center oil pipe 2 and closeouts 3. Horizontal well also includes 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, packer 1 have oil recovery passage and there is suspension, insulate, 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, on the tube wall of porose section of the centrally disposed oil pipe of through hole 20 2; Closeouts 3 blocks the one end away from packer 1 at center oil pipe 2.
In embodiments of the present invention, packer 1 is arranged on the inside of straight well section 10. Above-mentioned 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, fluid first passes through through hole 20 and enters the inside of center oil pipe 2, water needs flowing one segment distance just can pass through in through hole entrance center oil pipe 2, thus frictional resistance is bigger, center oil pipe 2 is utilized to change the uniformity of production profile, therefore the liquid-producing capacity that can make horizontal well exhalant region lowers, it is achieved the technique effect of horizontal well decreasing water cut and increasing oil.
Specifically, the packer of mechanical type or fluid pressure type all can as the packer 1 of inventive embodiments one, as long as be namely capable of setting with deblocking, hang, the packer of the effect of giving up all passable.
As in figure 2 it is shown, in the embodiment of the present invention one, management and control liquid tubing string in center also includes oil tool 7, oil tool 7 is positioned at the inside of straight well section 10, and oil tool 7 is arranged on top and the packer 1 interval setting of packer 1.
By above-mentioned setting, utilize oil tool 7 can extract the fluid being centrally located in oil pipe 2 out to realize recovering the oil.
As depicted in figs. 1 and 2, multiple through holes 20 are arranged along the tube wall interval of center oil pipe 2.
Above-mentioned arrange, the tube wall of the centrally disposed oil pipe 2 of multiple through holes 20 can be easy to fluid and enter in center oil pipe 2, to facilitate follow-up oil extraction operation.
In embodiments of the invention one, for ease of processing, multiple through holes 20 are arranged along the even tube wall of center oil pipe 2. Certainly, in the embodiment that the present invention does not provide, it is also possible to according to actual needs multiple through holes 20 are arranged to the non-homogeneous setting of tube wall along center oil pipe 2.
In the embodiment of the present invention one, specifically, management and control liquid tubing string in center includes multiple first hole group and multiple second hole group. The circumference of multiple first hole groups and multiple second Kong Zuyan center 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 includes spaced first hole of multiple length direction along center oil pipe 2, and the second hole group includes spaced second hole of multiple length direction along center 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 embodiment of the present invention one, management and control liquid tubing string in center also includes one or more centralizer 4, and centralizer 4 is arranged on the periphery of center oil pipe 2, and multiple centralizers 4 are arranged along the length direction interval at a certain distance of center oil pipe 2.
Above-mentioned arrange, utilize centralizer 4 that 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 embodiment of the present invention one, center oil pipe 2 includes 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 blocks one end away from packer 1 of in the end first pipeline section 21 or blocks in one end away from packer 1 of the second pipeline section 22, multiple through holes 20 are 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 embodiment of the present invention one, specifically, center oil pipe 2 includes 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 blocks the one end away from packer 1 at second the first pipeline section 21.
Specifically, in the embodiment of the present invention one, management and control liquid tubing string in center includes four centralizers 4. First centralizer is set in the first pipeline section 21 of close packer 1 and the periphery of the connecting portion of the second pipeline section 22, second centralizer and the 3rd centralizer are respectively positioned on the periphery of the second pipeline section 22, the periphery of the 4th centralizer connecting portion between the second pipeline section 22 and second the first pipeline section 21.
By above-mentioned setting, it is possible to make the second pipeline section 22 be in the center of horizontal segment better, it is simple to fluid enters the inside of the second pipeline section 22 from through hole 20, improve control liquid effect.
As depicted in figs. 1 and 2, in the embodiment of the present invention 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-mentioned arrange, when carrying out oil extraction operation, because the oil-producing area of the second pipeline section 22 with horizontal segment 30 is correspondingly arranged, the exhalant region of the first pipeline section 21 and horizontal segment 30 is correspondingly arranged, therefore, the flow path of fluid is shorter, the flowage friction resistance of liquid is less, fluid first passes through through hole 20 and enters the inside of the second pipeline section 22, water flows in horizontal segment 30 and reaches through hole 20 place of the second pipeline section 22 after a segment distance, then could entering the inside of the second pipeline section 22, the flow path of current is longer, and flowage friction resistance is bigger.
In said process, by center oil pipe 2, have adjusted the pressure distribution of the liquid within horizontal segment 30 (including fluid and water), so that the liquid-producing capacity of horizontal well exhalant region lowers, it is achieved that the technique effect of horizontal well decreasing water cut and increasing oil.
Fig. 1 illustrates that the center management and control liquid tubing string of the horizontal well of the embodiment of the present invention one is in the schematic diagram into well state. As it is shown in figure 1, in the embodiment of the present invention one, packer 1 includes packing element, in the process transferring packer 1, packer 1 is in the state of not setting, and between packing element and the borehole wall of horizontal well of packer 1, interval is arranged.
Fig. 2 illustrates that the center management and control liquid tubing string of the horizontal well of the embodiment of the present invention one is in the schematic diagram of oil recovery state. As shown in Figure 2, in the embodiment of the present invention one, when management and control liquid tubing string in center is in oil recovery state, packer 1 sets inside the straight well section 10 of horizontal well (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).
As depicted in figs. 1 and 2, in the embodiment of the present invention one, management and control liquid tubing string in center also includes connected pipes 5, and connected pipes 5 is arranged between packer 1 and center oil pipe 2, the oil recovery channel connection of one end of connected pipes 5 and packer 1, the other end of connected pipes 5 connects with center oil pipe 2.
Above-mentioned arrange, utilize connected pipes 5 can will be located in the fluid in center oil pipe 2 and/or water is delivered in the oil recovery passage of packer 1.
As depicted in figs. 1 and 2, in the embodiment of the present invention one, management and control liquid tubing string in center also includes 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 connects with connected pipes 5, and one end away from packer 1 of safe connection equipment 6 connects with center oil pipe 2.
Above-mentioned arrange, when center oil pipe 2 buried by sand cannot propose time, utilize the safe connection equipment 6 can to facilitate the parts such as follow-up taking-up center oil pipe 2, centralizer 4.
The embodiment of the present invention one additionally provides the control liquid pipe string technology of a kind of horizontal well, control liquid pipe string technology carries out control water according to aforesaid center management and control liquid tubing string, horizontal well includes straight well section 10 and horizontal segment 30, management and control liquid tubing string in center includes packer 1, center oil pipe 2 and closeouts 3, center oil pipe 2 is arranged on the downstream of packer 1, closeouts 3 blocks the one end away from packer 1 at center oil pipe 2, and control liquid pipe string technology comprises the following steps:
Geologic information according to horizontal well and creation data, it is determined that the exhalant region of horizontal well and oil-producing area;
Packer 1, center oil pipe 2 and closeouts 3, centralizer are sequentially carried out connection;
Transferring packer 1 and center oil pipe 2, so that packer 1 is 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.
In the above-mentioned process transferring packer 1 and center oil pipe 2, closeouts 3 also acts the effect of guiding.
In the embodiment of the present invention one, after the step of set packer 1, management and control liquid tubing string in center includes oil tool 7, oil tool 7 be arranged on packer 1 top and and packer 1 interval arrange, control liquid pipe string technology further comprising the steps of:
Oil tool 7 is transferred to 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, fluid first passes through through hole 20 and enters the inside of center oil pipe 2, 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 that can make horizontal well exhalant region lowers, it is achieved the technique effect of horizontal well decreasing water cut and increasing oil.
Embodiment two
In embodiments of the invention two, horizontal well includes straight well section 10, lower curved section 40 and horizontal segment 30, and one end of lower curved section 40 connects with straight well section 10, and the other end of lower curved section 40 connects with horizontal segment 30.
Management and control liquid tubing string in center includes packer 1, center oil pipe 2 and closeouts 3. Wherein, packer 1 is arranged on the inside of horizontal well, packer 1 have oil recovery passage and there is suspension, insulate, 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, on the tube wall of porose section of the centrally disposed oil pipe of through hole 20 2; Closeouts 3 blocks the one end away from packer 1 at center oil pipe 2.
In embodiments of the invention two, packer 1 is arranged on the inside of straight well section 10. Above-mentioned 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, fluid first passes through through hole 20 and enters the inside of center oil pipe 2, water needs flowing one segment distance just can pass through in through hole entrance center oil pipe 2, thus frictional resistance is bigger, center oil pipe 2 is utilized to change the uniformity of production profile, therefore the liquid-producing capacity that can make horizontal well exhalant region lowers, it is achieved the technique effect of horizontal well decreasing water cut and increasing oil.
The present embodiment two and embodiment one are different in that: packer 1 is arranged on the inside of lower curved section 40.
Embodiment three
In embodiments of the invention three, center oil pipe 2 includes 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 blocks one end away from packer 1 of in the end first pipeline section 21 or blocks in one end away from packer 1 of the second pipeline section 22, multiple through holes 20 are arranged on the tube wall of the second pipeline section 22, and the second pipeline section 22 forms porose section, and the first pipeline section 21 forms imperforate section.
Embodiments of the invention three and embodiment one are different in that:
Center oil pipe 2 includes multiple first pipeline section 21 and multiple second pipeline section 22, multiple first pipeline sections 21 and multiple second pipeline section 22 and is arranged alternately. We can be alternately arranged the length of the first pipeline section 21 and the second pipeline section 22 and quantity according to different well ' s conditions and be actually needed to meet.
Embodiment four
The embodiment of the present invention four and embodiment one are different in that:
In the embodiment of the present invention four, management and control liquid tubing string in center includes more than four centralizers 4, and centralizer 4 is arranged along the length direction uniform intervals of center oil pipe 2. Above-mentioned arrange, it is possible to better ensure that center oil pipe 2 is in the center of horizontal segment, improve control liquid effect.
Can be seen that from the description above, embodiments of the invention one achieve techniques below effect: horizontal well includes straight well section and the horizontal segment connected with straight well section, management and control liquid tubing string in center includes packer, center oil pipe and closeouts, wherein, packer is arranged on the inside of the straight well section of horizontal well, packer have oil recovery passage and there is suspension, insulate, 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, on the tube wall of porose section of the centrally disposed oil pipe of through hole, closeouts blocks in one end away from packer of center oil pipe, center oil pipe includes 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 blocks in one end away from packer of second the first pipeline section, when carrying out oil extraction operation, because the oil-producing area of the second pipeline section with horizontal segment is correspondingly arranged, two the first pipeline sections are all correspondingly arranged with the exhalant region of horizontal segment, therefore, the flowage friction of fluid is less, fluid first passes through through hole and enters the inside of the second pipeline section, water flows in horizontal segment and reaches the through hole of the second pipeline section after a segment distance, then the inside of the second pipeline section could be entered, thus, the flowage friction of current is bigger, in said process, by center oil pipe, have adjusted the pressure distribution of liquid within horizontal segment, so that the liquid-producing capacity of horizontal well exhalant region lowers, achieve the technique effect of horizontal well decreasing water cut and increasing oil.
Further, management and control liquid tubing string in center includes 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 respectively positioned on the periphery of the second pipeline section, the periphery of the 4th centralizer connecting portion between the second pipeline section and second the first pipeline section; By above-mentioned setting, it is possible to make the second pipeline section be in the center of horizontal segment better, it is simple to fluid enters the inside of the second pipeline section to improve control liquid effect from through hole.
These are only the preferred embodiments of the present invention, be not limited to the present invention, for a person skilled in the art, the present invention can have various modifications and variations. All within the spirit and principles in the present invention, any amendment of making, equivalent replacement, improvement etc., should be included within protection scope of the present invention.
Claims (12)
1. a center management and control liquid tubing string for horizontal well, horizontal well includes straight well section (10) and the horizontal segment (30) connected with described straight well section (10), it is characterised in that described center management and control liquid tubing string includes:
Packer (1), described packer (1) is arranged on the inside of described horizontal well, described packer (1) have oil recovery passage and there is suspension, insulate, 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) closure is in the one end away from described packer (1) at described center oil pipe (2).
2. management and control liquid tubing string in center according to claim 1, it is characterized in that, described center management and control liquid tubing string also includes oil tool (7), described oil tool (7) is positioned at the inside of described straight well section (10), and described oil tool (7) is arranged on top and described packer (1) the interval setting of described packer (1).
3. management and control liquid tubing string in center according to claim 1, it is characterised in that multiple described through holes (20) are arranged along the tube wall interval at described center oil pipe (2).
4. management and control liquid tubing string in center according to claim 1, it is characterized in that, described center management and control liquid tubing string also includes one or more centralizer (4), described centralizer (4) is arranged on the periphery at described center oil pipe (2), and multiple described centralizers (4) are arranged along the length direction interval at described center oil pipe (2).
5. management and control liquid tubing string in center according to claim 1, it is characterized in that, described center management and control liquid tubing string also includes connected pipes (5), described connected pipes (5) is arranged between described packer (1) and described center oil pipe (2), the described oil recovery channel connection of one end of described connected pipes (5) and described packer (1), the other end of described connected pipes (5) connects with described center oil pipe (2).
6. management and control liquid tubing string in center according to claim 5, it is characterized in that, described center management and control liquid tubing string also includes 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) connects with described connected pipes (5), one end away from described packer (1) of described safe connection equipment (6) connects with described center oil pipe (2).
7. management and control liquid tubing string in center according to any one of claim 1 to 6, it is characterized in that, described center oil pipe (2) includes 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), one end away from described packer (1) of described closeouts (3) closure in the end described first pipeline section (21) or closure are in one end away from described packer (1) of described second pipeline section (22), multiple described through holes (20) are 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. management and control liquid tubing string in center according to claim 7, it is characterized in that, described center oil pipe (2) includes multiple described first pipeline section (21) and multiple described second pipeline section (22), multiple described first pipeline sections (21) and multiple described second pipeline section (22) and is arranged alternately.
9. management and control liquid tubing string in center according to claim 7, it is characterized in that, described center oil pipe (2) includes 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) blocks in one end away from described packer (1) of second described first pipeline section (21).
10. management and control liquid tubing string in center 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).
11. the control liquid pipe string technology of a horizontal well, it is characterized in that, described control liquid pipe string technology management and control liquid tubing string in center according to any one of claim 1 to 10 carries out control water, described horizontal well includes straight well section (10) and horizontal segment (30), described center management and control liquid tubing string includes packer (1), center oil pipe (2) and closeouts (3), described center oil pipe (2) is arranged on the downstream of described packer (1), described closeouts (3) closure is in the one end away from described packer (1) at described center oil pipe (2), described control liquid pipe string technology comprises the following steps:
Geologic information according to horizontal well and creation data, it is determined that the exhalant region of horizontal well and oil-producing area;
Described packer (1), described center oil pipe (2) and described closeouts (3) are sequentially carried out connection;
Transfer described packer (1) and described center oil pipe (2), so that described packer (1) is positioned at described straight well section (10), the imperforate section at described center oil pipe (2) is positioned at described exhalant region, and porose section of described center oil pipe (2) is positioned at described oil-producing area;
Set described packer (1) and give up.
12. control liquid pipe string technology according to claim 11, it is characterized in that, after setting the step of described packer (1), described center management and control liquid tubing string includes oil tool (7), described oil tool (7) be arranged on described packer (1) top and and described packer (1) interval arrange, described control liquid pipe string technology is further comprising the steps of:
Described oil tool (7) is transferred to described straight well section (10).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410645402.7A CN105625978B (en) | 2014-11-06 | 2014-11-06 | The central tube draining tubing string of horizontal well and the draining pipe string technology of horizontal well |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410645402.7A CN105625978B (en) | 2014-11-06 | 2014-11-06 | The central tube draining tubing string of horizontal well and the draining pipe string technology of horizontal well |
Publications (2)
| Publication Number | Publication Date |
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| CN105625978A true CN105625978A (en) | 2016-06-01 |
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| CN109899071A (en) * | 2019-04-04 | 2019-06-18 | 四川盐业地质钻井大队 | The horizontal well group lubricating pad control device for picking of well mine salt and technique |
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