CN105625978B - The central tube draining tubing string of horizontal well and the draining pipe string technology of horizontal well - Google Patents
The central tube draining tubing string of horizontal well and the draining pipe string technology of horizontal well Download PDFInfo
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- CN105625978B CN105625978B CN201410645402.7A CN201410645402A CN105625978B CN 105625978 B CN105625978 B CN 105625978B CN 201410645402 A CN201410645402 A CN 201410645402A CN 105625978 B CN105625978 B CN 105625978B
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Abstract
The invention provides a kind of central tube draining tubing string of horizontal well and the draining pipe string technology of horizontal well.Horizontal well includes straight well section and the horizontal segment connected with straight well section, and central tube draining tubing string includes：Packer, packer are arranged on the inside of horizontal well, and packer is with oil channel and with hanging, insulate, function of giving up；Center oil pipe, center oil pipe is arranged on the lower end of packer and extended in horizontal segment, and center oil pipe connects with the oil channel of packer, and center oil pipe has hole section and imperforate section, there is hole section to be provided with multiple through holes, the centrally disposed oil pipe of through hole has on the tube wall of hole section；Closeouts, closeouts are blocked in one end of the remote packer of center oil pipe.According to the present invention it is possible to realize the purpose of horizontal well decreasing water cut and increasing oil.
Description
Technical field
The present invention relates to a kind of central tube draining tubing string of horizontal well and the draining pipe string technology of horizontal well.
Background technology
In the prior art, horizontal well with bottom water reservoir has been widely applied, but most of horizontal well is shown in production process
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 that completion methods of horizontal wells and completion parameter have significant impact to the coning of bottom water.Due to horizontal in the past
The completion mode that well uses is single, mainly independent sieve tube completion, does not account for controlling water and middle and later periods water detection water blockoff in advance
It is required that causing very big puzzlement to later stage measure and underground work, water detection water blockoff difficulty is big, and measure effect is poor.Many wells are in height
Water-cut stage does not possess mechanically or chemically Sealing Conditions, and horizontal well control outlet capacity is poor.
Therefore, design one kind can meet to control water requirement in advance, and and can provides foundation for the water detection water-blocking operation in later stage
Water control pipe post technique is very necessary, and this will strengthen bottom water reservoir water-control oil-increasing conscientiously, greatly improve horizontal wells effect
And oil field whole development benefit.
The content of the invention
, can present invention aims at the central tube draining tubing string for providing a kind of horizontal well and the draining pipe string technology of horizontal well
To realize the purpose of horizontal well decreasing water cut and increasing oil.
The invention provides a kind of central tube draining tubing string of horizontal well, horizontal well includes straight well section and connected with straight well section
Horizontal segment, central tube draining tubing string includes：Packer, packer are arranged on the inside of horizontal well, and packer, which has to recover the oil, to be led to
Road and with hang, insulate, function of giving up；Center oil pipe, center oil pipe are arranged on the lower end of packer and prolonged in horizontal segment
Stretch, center oil pipe connects with the oil channel of packer, and center oil pipe has hole section and imperforate section, has hole section to be provided with multiple
Through hole, the centrally disposed oil pipe of through hole have on the tube wall of hole section；Closeouts, closeouts block the remote packing in center oil pipe
One end of device.
Further, central tube draining tubing string also includes oil tool, and oil tool is located at the inside of straight well section, oil recovery work
Tool is arranged on the top of packer and is arranged at intervals with packer.
Further, tube wall of multiple through holes along center oil pipe is arranged at intervals.
Further, central tube draining tubing string also includes one or more centralizer, and centralizer is arranged on center oil pipe
Periphery, length direction of multiple centralizers along center oil pipe be arranged at intervals.
Further, central tube draining tubing string also includes connected pipes, and connected pipes are arranged on packer and center oil pipe
Between, one end of connected pipes connects with the oil channel of packer, and the other end of connected pipes connects with center oil pipe.
Further, central tube draining tubing string also includes safe connection equipment, and safe connection equipment is arranged on connected pipes
Between the oil pipe of center, safe connection equipment is located at one end of the close packer of horizontal segment, the close envelope of safe connection equipment
Connected every one end of device with connected pipes, one end of the remote 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, first
One end away from the second pipeline section of one pipeline section is connected with packer, and closeouts block the remote packing in last the first pipeline section
One end of device or closure are arranged on the tube wall of the second pipeline section in one end of the remote packer of the second pipeline section, multiple through holes,
Second pipeline section forms imperforate section formed with hole section, the first pipeline section.
Further, center oil pipe includes multiple first pipeline sections and multiple second pipeline sections, multiple first pipeline sections and multiple
Two pipeline sections are arranged alternately.
Further, center oil pipe includes two the first pipeline sections and second pipeline section, and the second pipeline section is located at two first
Between pipeline section, one end away from the second pipeline section of first the first pipeline section is connected with packer, and closeouts are blocked at second the
One end of the remote packer of one pipeline section.
Further, the second pipeline section is located at the oil-producing area of horizontal segment, and the first pipeline section is located at the exhalant region of horizontal segment.
According to another aspect of the present invention, there is provided a kind of draining pipe string technology of horizontal well, draining pipe string technology root
Control water is carried out according to foregoing central tube draining tubing string, horizontal well includes straight well section and horizontal segment, and central tube draining tubing string includes envelope
Every device, center oil pipe and closeouts, center oil pipe is arranged on the downstream of packer, and closeouts block the remote envelope in center oil pipe
Every one end of device, draining pipe string technology comprises the following steps：According to the geologic information and creation data of horizontal well, horizontal well is determined
Exhalant region and oil-producing area；Packer, center oil pipe and closeouts are attached successively；Packer and center oil pipe are transferred,
So that packer is located in straight well section, the imperforate section of center oil pipe is located at exhalant region, and center oil pipe has hole section to be located at oil-producing area；
Set packer is simultaneously given up.
Further, after the step of set packer, central tube draining tubing string includes oil tool, and oil tool is set
Put in the top of packer and be arranged at intervals with packer, draining pipe string technology is further comprising the steps of：Oil tool is transferred
To straight well section.
According to the central tube draining tubing string of the horizontal well of the present invention, horizontal well includes straight well section and the water connected with straight well section
Flat section, central tube draining tubing string include：Packer, packer are arranged on the inside of horizontal well, and packer has oil channel simultaneously
With hanging, insulate, function of giving up；Center oil pipe, center oil pipe are arranged on the lower end of packer and extended in horizontal segment, in
Heart oil pipe connects with the oil channel of packer, and center oil pipe has hole section and imperforate section, has hole section to be provided with multiple through holes,
The centrally disposed oil pipe of through hole has on the tube wall of hole section；Closeouts, closeouts block the remote packer in center oil pipe
One end.
In above-mentioned setting, the imperforate section of center oil pipe is located at the exhalant region of horizontal segment, and center oil pipe has hole section to be located at water
The oil-producing area of flat section, the flowing frictional resistance of fluid is smaller, and fluid enters the inside of center oil pipe by through hole first, and water needs to flow
One segment distance can just be entered in the oil pipe of center by through hole, thus frictional resistance is larger, and level is improved using center oil pipe
The uniformity of the production profile of well, therefore can lower the liquid-producing capacity of horizontal well exhalant region, realize horizontal well decreasing water cut and increasing oil
Technique effect.
Brief description of the drawings
The accompanying drawing for forming the part of the application is used for providing a further understanding of the present invention, schematic reality of the invention
Apply example and its illustrate to be used to explain the present invention, do not form inappropriate limitation of the present invention.In the accompanying drawings：
Fig. 1 is that the central tube draining tubing string of according to embodiments of the present invention one horizontal well is in the front view structure into well state
Schematic diagram；
Fig. 2 is that the central tube draining tubing string of according to embodiments of the present invention one horizontal well is in the front view structure of oil recovery state
Schematic diagram.
Reference：1st, packer；10th, straight well section；
2nd, center oil pipe；30th, horizontal segment；
40th, lower curved section；20th, through hole；
21st, the first pipeline section；22nd, the second pipeline section；
3rd, closeouts；4th, centralizer；
5th, connected pipes；6th, safe connection equipment；
7th, oil tool.
Embodiment
Describe the present invention in detail below with reference to the accompanying drawings and in conjunction with the embodiments.It should be noted that in the feelings not conflicted
Under condition, the feature in embodiment and embodiment in the application can be mutually combined.
Embodiment one
As depicted in figs. 1 and 2, the embodiment of the present invention one provides a kind of central tube draining tubing string of horizontal well.Horizontal well
The horizontal segment 30 connected including straight well section 10 and with straight well section 10, central tube draining tubing string include packer 1, the and of center oil pipe 2
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, and packer 1 is with oil channel and with hanging, insulate, lose
Hand function；Center oil pipe 2 is arranged on the lower end of packer 1 and extended in horizontal segment 30, and center oil pipe 2 is adopted with packer 1
Oily passage connection, center oil pipe 2 have hole section and imperforate section, have hole section to be provided with multiple through holes 20, during through hole 20 is arranged on
Heart oil pipe 2 has on the tube wall of hole section；Closeouts 3 are blocked in one end of the remote packer 1 of center oil pipe 2.
In embodiments of the present invention, packer 1 is arranged on the inside of straight well section 10.In above-mentioned setting, center oil pipe 2
Imperforate section is located at the exhalant region of horizontal segment, and center oil pipe 2 has the oil-producing area that hole section is located at horizontal segment 30, the flowage friction of fluid
Smaller, fluid enters the inside of center oil pipe 2 by through hole 20 first, and water needs one segment distance of flowing just to enter by through hole
Enter in center oil pipe 2, thus frictional resistance is larger, and the uniformity of production profile is changed using center oil pipe 2, therefore can make
The liquid-producing capacity of horizontal well exhalant region lowers, and realizes the technique effect of horizontal well decreasing water cut and increasing oil.
Specifically, mechanical or fluid pressure type packer can be as the packer 1 of inventive embodiments one, as long as that is,
Can realize set and unseal, hang, the packer for effect of giving up can be with.
As shown in Fig. 2 in the embodiment of the present invention one, central tube draining tubing string also includes oil tool 7, oil tool 7
In the inside of straight well section 10, oil tool 7 is arranged on the top of packer 1 and is arranged at intervals with packer 1.
By above-mentioned setting, it can extract the fluid in center oil pipe 2 out using oil tool 7 and be recovered the oil with realizing.
As depicted in figs. 1 and 2, tube wall of multiple through holes 20 along center oil pipe 2 is arranged at intervals.
In above-mentioned setting, on the tube wall of multiple centrally disposed oil pipes 2 of through hole 20 fluid can be easy to enter center oil pipe 2
It is interior, to facilitate follow-up oil extraction operation.
In embodiments of the invention one, for ease of processing, even tube wall of multiple through holes 20 along center oil pipe 2 is set.When
So, in the embodiment that the present invention does not provide, multiple through holes 20 can also be arranged to along center oil pipe 2 according to being actually needed
The non-homogeneous setting of tube wall.
In the embodiment of the present invention one, specifically, central tube draining tubing string includes multiple first holes group and multiple second holes group.
The circumference of multiple first holes group and multiple second holes group along center oil pipe 2 is arranged alternately.
Wherein, the first hole group and the second hole group are arranged at intervals on the length direction of center oil pipe 2.First hole group includes more
Spaced first hole of the individual length direction along center oil pipe 2, the second hole group include multiple length directions along center oil pipe 2
Spaced second hole.
Wherein, for ease of processing and manufacturing, the size in the first hole is identical with the size in the second hole.The first above-mentioned hole and
Two holes form foregoing through hole 20.
As depicted in figs. 1 and 2, in the embodiment of the present invention one, central tube draining tubing string also includes one or more righting
Device 4, centralizer 4 be arranged on center oil pipe 2 periphery, length direction of multiple centralizers 4 along center oil pipe 2 at a certain distance between
Every setting.
In above-mentioned setting, using centralizer 4 center oil pipe 2 can be made to be in the center of horizontal segment, improve draining effect
Fruit.
As depicted in figs. 1 and 2, in the embodiment of the present invention one, center oil pipe 2 is including at least one first pipeline section 21 and at least
One the 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, is blocked
Part 3 block one end of the remote packer 1 of last the first pipeline section 21 or closure the second pipeline section 22 remote packing
One end of device 1, multiple through holes 20 are arranged on the tube wall of the second pipeline section 22, and the second pipeline section 22 is formed with hole section, the first pipeline section 21
Form 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 of remote second pipeline section 22 of first the first pipeline section 21 and packing
Device 1 is connected, and closeouts 3 are blocked in one end of the remote packer 1 of second the first pipeline section 21.
Specifically, in the embodiment of the present invention one, central tube draining tubing string includes four centralizers 4.First centralizer set
It is located at the periphery close to the first pipeline section 21 of packer 1 and the connecting portion of the second pipeline section 22, second centralizer and the 3rd
Centralizer is respectively positioned on the periphery of the second pipeline section 22, and the 4th centralizer is between the second pipeline section 22 and second the first pipeline section 21
Connecting portion periphery.
By above-mentioned setting, the second pipeline section 22 can be made preferably to be in the center of horizontal segment, be easy to fluid from logical
Hole 20 enters the inside of the second pipeline section 22, improves draining effect.
As depicted in figs. 1 and 2, in the embodiment of the present invention one, the second pipeline section 22 is located at the oil-producing area of horizontal segment 30, the first pipe
Section 21 is located at the exhalant region of horizontal segment 30.
In above-mentioned setting, when carrying out oil extraction operation, because the oil-producing area of the second pipeline section 22 and horizontal segment 30 is correspondingly arranged, the
The exhalant region of one pipeline section 21 and horizontal segment 30 is correspondingly arranged, and therefore, the flow path of fluid is shorter, the flowage friction resistance of liquid
Smaller, fluid enters the inside of the second pipeline section 22 by through hole 20 first, and water reaches in horizontal segment 30 after one segment distance of flowing
At the through hole 20 of second pipeline section 22, it then could enter the inside of the second pipeline section 22, the flow path of current is longer, flowage friction
Resistance is larger.
In said process, by center oil pipe 2, the pressure of the liquid (including fluid and water) inside horizontal segment 30 have adjusted
Distribution, so that the liquid-producing capacity of horizontal well exhalant region lowers, realize the technique effect of horizontal well decreasing water cut and increasing oil.
Fig. 1 shows that the central tube draining tubing string of the horizontal well of the embodiment of the present invention one is in the schematic diagram into well state.
As shown in figure 1, in the embodiment of the present invention one, packer 1 includes packing element, and during packer 1 is transferred, packer 1 is in
State is not set, is arranged at intervals between the packing element of packer 1 and the borehole wall of horizontal well.
Fig. 2 shows that the central tube draining 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 Fig. 2 in the embodiment of the present invention one, when center management and control liquid pipe post is in oil recovery state, packer 1 is set in horizontal well
(i.e. packer 1 is in running order, the borehole wall and packing of the packing element of packer 1 for sealed horizontal well the inside of straight well section 10
The gap of the diameter of device 1).
As depicted in figs. 1 and 2, in the embodiment of the present invention one, central tube draining tubing string also includes connected pipes 5, connection oil
Pipe 5 is arranged between packer 1 and center oil pipe 2, and one end of connected pipes 5 connects with the oil channel of packer 1, connection oil
The other end of pipe 5 connects with center oil pipe 2.
In above-mentioned setting, the fluid in center oil pipe 2 and/or water packing can be delivered to using connected pipes 5
In the oil channel of device 1.
As depicted in figs. 1 and 2, in the embodiment of the present invention one, central tube draining tubing string also includes safe connection equipment 6, peace
Full attachment means 6 are arranged between connected pipes 5 and center oil pipe 2, and safe connection equipment 6 is located at the close packing of horizontal segment 30
One end of device 1, one end of the close packer 1 of safe connection equipment 6 connect with connected pipes 5, safe connection equipment 6 it is remote
One end of packer 1 connects with center oil pipe 2.
, can be conveniently follow-up using safe connection equipment 6 when center oil pipe 2 is buried by sand to be proposed in above-mentioned setting
The parts such as taking-up center oil pipe 2, centralizer 4.
The embodiment of the present invention one additionally provides a kind of draining pipe string technology of horizontal well, and draining pipe string technology is according to foregoing
Central tube draining tubing string carries out control water, and horizontal well includes straight well section 10 and horizontal segment 30, and central tube draining tubing string includes packer
1st, center oil pipe 2 and closeouts 3, center oil pipe 2 are arranged on the downstream of packer 1, and closeouts 3 are blocked in the remote of center oil pipe 2
From one end of packer 1, draining pipe string technology comprises the following steps：
According to the geologic information and creation data of horizontal well, exhalant region and the oil-producing area of horizontal well are determined；
Packer 1, center oil pipe 2 and closeouts 3, centralizer are attached successively；
Packer 1 and center oil pipe 2 are transferred, so that packer 1 is located in straight well section 10, the non-porous section of center oil pipe 2
In exhalant region, center oil pipe 2 has hole section to be located at oil-producing area；
Set packer 1 is simultaneously given up.
During above-mentioned decentralization packer 1 and center oil pipe 2, closeouts 3 also act the effect of guiding.
In the embodiment of the present invention one, after the step of set packer 1, central tube draining tubing string includes oil tool 7,
Oil tool 7 is arranged on the top of packer 1 and is arranged at intervals with packer 1, and draining pipe string technology is further comprising the steps of：
Oil tool 7 is transferred to straight well section 10.
By above-mentioned setting, the second pipeline section 22 of center oil pipe 2 is located at the exhalant region of horizontal segment, and the first of center oil pipe 2
Pipeline section 21 is located at the oil-producing area of horizontal segment 30, and the flow path of fluid is shorter, and flowage friction resistance is small, and fluid passes through through hole first
20 enter the inside of center oil pipe 2, and water needs one segment distance of flowing just to enter by through hole 20 in center oil pipe 2, utilized
Center oil pipe 2 improves the uniformity of production profile, therefore can lower the liquid-producing capacity of horizontal well exhalant region, realizes horizontal
The technique effect of 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 the one of lower curved section 40
End connects with straight well section 10, and the other end of lower curved section 40 connects with horizontal segment 30.
Central tube draining tubing string includes packer 1, center oil pipe 2 and closeouts 3.Wherein, packer 1 is arranged on horizontal well
Inside, packer 1 is with oil channel and with hanging, insulate, function of giving up；Center oil pipe 2 is arranged under packer 1
To hold and extend positioned at the inside of horizontal segment 30 and in horizontal segment 30, center oil pipe 2 connects with the oil channel of packer 1, in
Heart oil pipe 2 has hole section and imperforate section, has hole section to be provided with multiple through holes 20, and the centrally disposed oil pipe 2 of through hole 20 has hole
On the tube wall of section；Closeouts 3 are blocked in one end of the remote packer 1 of center oil pipe 2.
In embodiments of the invention two, packer 1 is arranged on the inside of straight well section 10.In above-mentioned setting, center oil pipe 2
Imperforate section is located at the exhalant region of horizontal segment, and center oil pipe 2 has the oil-producing area that hole section is located at horizontal segment 30, the flowage friction of fluid
Smaller, fluid enters the inside of center oil pipe 2 by through hole 20 first, and water needs one segment distance of flowing just to enter by through hole
Enter in center oil pipe 2, thus frictional resistance is larger, and the uniformity of production profile is changed using center oil pipe 2, therefore can make
The liquid-producing capacity of horizontal well exhalant region lowers, and realizes the technique effect of horizontal well decreasing water cut and increasing oil.
The present embodiment two and the difference of embodiment one are：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, and closeouts 3 are blocked last
One end of the remote packer 1 of one the first pipeline section 21 or closure are multiple in one end of the remote packer 1 of the second pipeline section 22
Through hole 20 is arranged on the tube wall of the second pipeline section 22, and the second pipeline section 22 forms imperforate section formed with hole section, the first pipeline section 21.
Embodiments of the invention three and the difference of embodiment one are：
Center oil pipe 2 includes multiple first pipeline sections 21 and multiple second pipeline sections 22, multiple first pipeline sections 21 and multiple second
Pipeline section 22 is arranged alternately.We can be alternately arranged the length and quantity of the first pipeline section 21 and the second pipeline section 22 according to different well's conditionses
To meet to be actually needed.
Example IV
The difference of the embodiment of the present invention four and embodiment one is：
In the embodiment of the present invention four, central tube draining tubing string includes more than four centralizers 4, and centralizer 4 is along center oil pipe 2
Length direction uniform intervals set.In above-mentioned setting, it can better ensure that center oil pipe 2 is in the centre bit of horizontal segment
Put, improve draining effect.
It can be seen from the above that embodiments of the invention one realize following technique effect：Horizontal well includes straight
Well section and the horizontal segment connected with straight well section, central tube draining tubing string include packer, center oil pipe and closeouts, wherein, envelope
It is arranged on the inside of the straight well section of horizontal well every device, packer is with oil channel and with hanging, insulate, function of giving up；In
Heart oil pipe is arranged on the lower end of packer and extended in horizontal segment, and center oil pipe connects with the oil channel of packer, center
Oil pipe has hole section and imperforate section, has hole section to be provided with multiple through holes, the tube wall for having hole section of the centrally disposed oil pipe of through hole
On；Closeouts are blocked in one end of the remote packer of center oil pipe；Center oil pipe includes two the first pipeline sections and one second
Pipeline section, the second pipeline section is between two the first pipeline sections, one end of remote second pipeline section of first the first pipeline section and packer
Connection, closeouts are blocked in one end of the remote packer of second the first pipeline section；When carrying out oil extraction operation, because of the second pipeline section and
The oil-producing area of horizontal segment is correspondingly arranged, and exhalant region of two the first pipeline sections with horizontal segment is correspondingly arranged, therefore, the flowing of fluid
Friction is smaller, and fluid enters the inside of the second pipeline section by through hole first, and water flows in horizontal segment reaches the after a segment distance
The through hole of two pipeline sections, it then could enter the inside of the second pipeline section, thus, the flowage friction of current is larger, in said process,
By center oil pipe, the pressure distribution of the liquid inside horizontal segment is have adjusted, so that the liquid-producing capacity of horizontal well exhalant region subtracts
It is low, realize the technique effect of horizontal well decreasing water cut and increasing oil.
Further, central tube draining tubing string includes four centralizers, and first centralizer is set in first first pipe
The periphery of the connecting portion of 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 connecting portion of 4th centralizer between the second pipeline section and second the first pipeline section；, can by above-mentioned setting
So that the second pipeline section is preferably in the center of horizontal segment, it is easy to inside of the fluid from through hole into the second pipeline section to improve
Draining effect.
The preferred embodiments of the present invention are these are only, are not intended to limit the invention, for those skilled in the art
For member, the present invention can have various modifications and variations.Any modification within the spirit and principles of the invention, being made,
Equivalent substitution, improvement etc., should be included in the scope of the protection.
Claims (11)
1. a kind of central tube draining tubing string of horizontal well, horizontal well includes straight well section (10) and connected with the straight well section (10)
Horizontal segment (30), it is characterised in that the central tube draining tubing string includes：
Packer (1), the packer (1) are arranged on the inside of the horizontal well, and the packer (1) has oil channel simultaneously
With hanging, insulate, function of giving up；
Center oil pipe (2), the center oil pipe (2) are arranged on the lower end of the packer (1) and in the horizontal segments (30)
Extension, the center oil pipe (2) connect with the oil channel of the packer (1), and the center oil pipe (2) has hole
Section and imperforate section, described to have hole section to be provided with multiple through holes (20), the through hole (20) is arranged on the institute of the center oil pipe (2)
State on the tube wall of hole section；
Closeouts (3), one end of the remote packer (1) of closeouts (3) closure in the center oil pipe (2)；
The central tube draining tubing string also includes one or more centralizer (4), and the centralizer (4) is arranged on the center
The periphery of oil pipe (2)；
The central tube draining tubing string also includes connected pipes (5), the connected pipes (5) be arranged on the packer (1) and
Between the center oil pipe (2), one end of the connected pipes (5) connects with the oil channel of the packer (1), institute
The other end for stating connected pipes (5) connects with the center oil pipe (2).
2. central tube draining tubing string according to claim 1, it is characterised in that the central tube draining tubing string also includes adopting
Oily instrument (7), the oil tool (7) are located at the inside of the straight well section (10), and the oil tool (7) is arranged on the envelope
It is arranged at intervals every the top of device (1) and with the packer (1).
3. central tube draining tubing string according to claim 1, it is characterised in that multiple through holes (20) are along the center
The tube wall of oil pipe (2) is arranged at intervals.
4. central tube draining tubing string according to claim 1, it is characterised in that multiple centralizers (4) are along in described
The length direction of heart oil pipe (2) is arranged at intervals.
5. central tube draining tubing string according to claim 1, it is characterised in that the central tube draining tubing string also includes peace
Full attachment means (6), the safe connection equipment (6) are arranged between the connected pipes (5) and the center oil pipe (2),
The safe connection equipment (6) is located at one end of the close packer (1) of the horizontal segment (30), the secure connection dress
The one end for putting the close packer (1) of (6) connects with the connected pipes (5), the safe connection equipment (6) it is remote
One end of the packer (1) connects with the center oil pipe (2).
6. central tube draining tubing string according to any one of claim 1 to 5, it is characterised in that the center oil pipe (2)
Including at least one first pipeline section (21) and at least one second pipeline section (22), wherein, first first pipeline section (21)
One end away from second pipeline section (22) is connected with the packer (1), and closeouts (3) closure is described in last
The remote packing of one end of the remote packer (1) of first pipeline section (21) or closure in second pipeline section (22)
One end of device (1), multiple through holes (20) are arranged on the tube wall of second pipeline section (22), the second pipeline section (22) shape
There is hole section into described, first pipeline section (21) forms the imperforate section.
7. central tube draining tubing string according to claim 6, it is characterised in that the center oil pipe (2) includes multiple institutes
State the first pipeline section (21) and multiple second pipeline sections (22), multiple first pipeline sections (21) and multiple second pipeline sections
(22) it is arranged alternately.
8. central tube draining tubing string according to claim 6, it is characterised in that the center oil pipe (2) includes two institutes
The first pipeline section (21) and second pipeline section (22) are stated, second pipeline section (22) is located at two first pipeline sections (21)
Between, one end of remote second pipeline section (22) of first first pipeline section (21) is connected with the packer (1), institute
Closeouts (3) closure is stated in one end of the remote packer (1) of second first pipeline section (21).
9. central tube draining tubing string according to claim 6, it is characterised in that second pipeline section (22) is located at the water
The oil-producing area of flat section (30), first pipeline section (21) are located at the exhalant region of the horizontal segment (30).
10. the draining pipe string technology of a kind of horizontal well, it is characterised in that the draining pipe string technology is according in claim 1 to 9
Central tube draining tubing string described in any one carries out control water, and the horizontal well includes straight well section (10) and horizontal segment (30), described
Central tube draining tubing string includes packer (1), center oil pipe (2) and closeouts (3), and the center oil pipe (2) is arranged on described
The downstream of packer (1), one end of the remote packer (1) of closeouts (3) closure in the center oil pipe (2),
The draining pipe string technology comprises the following steps：
According to the geologic information and creation data of horizontal well, exhalant region and the oil-producing area of horizontal well are determined；
The packer (1), the center oil pipe (2) and the closeouts (3) are attached successively；
The packer (1) and the center oil pipe (2) are transferred, so that the packer (1) is located in the straight well section (10),
The imperforate section of the center oil pipe (2) is located at the exhalant region, and the center oil pipe (2) has hole section to be located at the oil-producing area；
Set the packer (1) and give up.
11. draining pipe string technology according to claim 10, it is characterised in that set the packer (1) the step of
Afterwards, the central tube draining tubing string includes oil tool (7), and the oil tool (7) is arranged on the upper of the packer (1)
Packer described in Fang Bingyu (1) is arranged at intervals, and the draining pipe string technology is further comprising the steps of：
By in the oil tool (7) decentralization to the straight well section (10).
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| 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 |
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| CN105625978B true CN105625978B (en) | 2018-04-03 |
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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 |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2306986A (en) * | 1995-11-06 | 1997-05-14 | Baker Hughes Inc | Horizontal inflation tool with selective mandrel locking device |
| CN201474673U (en) * | 2009-08-19 | 2010-05-19 | 中国石油天然气股份有限公司 | Oil-producing pipe column for sectional water control of horizontal well |
| CN101787854A (en) * | 2010-03-03 | 2010-07-28 | 西南石油大学 | Subsection well completion system of bottom water reservoir horizontal well |
| CN101864921A (en) * | 2010-06-11 | 2010-10-20 | 大港油田集团有限责任公司 | Well completion and oil production string of horizontal well and well completion and oil production processes thereof |
| CN201963286U (en) * | 2011-03-10 | 2011-09-07 | 中国石油天然气股份有限公司 | Flow string for reducing containing water of central pipe of horizontal well |
| CN204252928U (en) * | 2014-11-06 | 2015-04-08 | 中国石油天然气股份有限公司 | The center management and control liquid tubing string of horizontal well |
-
2014
- 2014-11-06 CN CN201410645402.7A patent/CN105625978B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2306986A (en) * | 1995-11-06 | 1997-05-14 | Baker Hughes Inc | Horizontal inflation tool with selective mandrel locking device |
| CN201474673U (en) * | 2009-08-19 | 2010-05-19 | 中国石油天然气股份有限公司 | Oil-producing pipe column for sectional water control of horizontal well |
| CN101787854A (en) * | 2010-03-03 | 2010-07-28 | 西南石油大学 | Subsection well completion system of bottom water reservoir horizontal well |
| CN101864921A (en) * | 2010-06-11 | 2010-10-20 | 大港油田集团有限责任公司 | Well completion and oil production string of horizontal well and well completion and oil production processes thereof |
| CN201963286U (en) * | 2011-03-10 | 2011-09-07 | 中国石油天然气股份有限公司 | Flow string for reducing containing water of central pipe of horizontal well |
| CN204252928U (en) * | 2014-11-06 | 2015-04-08 | 中国石油天然气股份有限公司 | The center management and control liquid tubing string of horizontal well |
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