CN105156080B - A kind of method and layering for preventing rod and tube partial-wear is same to adopt tubing string - Google Patents

A kind of method and layering for preventing rod and tube partial-wear is same to adopt tubing string Download PDF

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Publication number
CN105156080B
CN105156080B CN201510587717.5A CN201510587717A CN105156080B CN 105156080 B CN105156080 B CN 105156080B CN 201510587717 A CN201510587717 A CN 201510587717A CN 105156080 B CN105156080 B CN 105156080B
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China
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weight
oil pipe
tubing string
oil
clump weight
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CN105156080A (en
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李志广
张子佳
闫永维
李风涛
李川
曾晓辉
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China Petroleum and Natural Gas Co Ltd
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China Petroleum and Natural Gas Co Ltd
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Abstract

The invention discloses a kind of methods for preventing rod and tube partial-wear and layering with tubing string is adopted, which includes:The mechanical packer, which is obtained, according to the technical parameter of mechanical packer sets required ballast;Obtain the weight of the single oil pipe used in the mechanical packer and quality, volume and the height of clump weight;According to the ballast, the weight of the single oil pipe, quality, volume and the height of the clump weight, calculates counterweight the number of blocks n, n obtained needed for the mechanical packer and be more than or equal to 1;Clump weight described in n blocks is sleeved on the oil pipe, so that layering is in the lower section of layered oil pump with the neutral point for adopting tubing string.Through the above technical solutions, solving prior art middle level with the technical issues of sucker rod of tubing string and oil pipe are susceptible to eccentric wear is adopted, prevent layering from adopting the rod and tube partial-wear of tubing string together.

Description

A kind of method and layering for preventing rod and tube partial-wear is same to adopt tubing string
Technical field
The present invention relates to petroleum industry technical field of oil production engineering, more particularly to a kind of method for preventing rod and tube partial-wear And layering adopts tubing string together.
Background technology
Oil field geologic is complicated, and that there are oil well production well sections is long for most blocks, series of strata are more, reservoir coefficient of variation height, comprehensive Close the problems such as aqueous high so that serious interlayer interference, oil extraction difficulty are big.Nowadays, by be directed to interlayer interference problem into Row research forms different layerings with technology is adopted, achieves significantly application effect.
But lifted for deep-well crude oil, adopting tubular column structure shows inadaptability, mechanical packer together for existing layering The hypomere of upper end oil pipe will generate unstability bending because of the pressure of oil pipe upper end, to make sucker rod pump When, sucker rod and the abrasion for being bent oil pipe are caused, and setting force is bigger, tubing bending degree is bigger, and side-abrasion of rod string is also just cured Seriously.Oil pipe is set just as the elongate rod that a hypomere is fixed support, under the action of gravity itself, lower part oil pipe by The larger of power will produce buckling deformation.It is mainly shown as that defueling pump is big by compressive load, causes bar, pipe, plunger eccentric wear serious, Sucker rod is caused to occur disconnected de-.
As it can be seen that layering in the prior art is the same as adopting the sucker rod of tubing string and the technical issues of oil pipe is susceptible to eccentric wear.
Invention content
The embodiment of the present invention provides a kind of method for preventing rod and tube partial-wear and layering with adopting tubing string, existing for solving Technology middle level prevents the rod tube that tubing string is adopted together in layering inclined with the technical issues of sucker rod of tubing string and oil pipe are susceptible to eccentric wear is adopted Mill.
The embodiment of the present application provides a kind of for preventing layering with the method for the rod and tube partial-wear for adopting tubing string, the method packet It includes:
The mechanical packer, which is obtained, according to the technical parameter of mechanical packer sets required ballast;
Obtain the weight of the single oil pipe used in the mechanical packer and quality, volume and the height of clump weight;
According to the ballast, the weight of the single oil pipe, quality, volume and the height of the clump weight, calculates and obtain Counterweight number of blocks n needed for the mechanical packer, n >=1;
Clump weight described in n blocks is sleeved on the oil pipe, so that layering is in layered oil pump with the neutral point for adopting tubing string Lower section.
Optionally, according to the ballast, the weight of the single oil pipe, quality, volume and the height of the clump weight, meter The counterweight number of blocks n obtained needed for the mechanical packer is calculated, is obtained especially by following formula:
Wherein, T indicates that mechanical packer sets required ballast;H indicates the height of clump weight;T indicates the oil pipe Single weight;W indicates the weight of clump weight.
Optionally, the weight of the clump weight is obtained especially by following formula:
W=V × 7.9 × 10-6×9.8
Wherein,D1 indicates that the outer diameter of the clump weight, d2 indicate the interior of the clump weight Diameter.
Optionally, described that clump weight described in n blocks is sleeved on the oil pipe, specially:
The n blocks clump weight is sleeved on an at least oil pipe, wherein every oil pipe and the mechanical packer One end of connection is at the 8.5m of every oil pipe for being arranged the clump weight.
Optionally, the method further includes:
The layering is obtained with the weight G for adopting tubing string;
It will be layered with tubing string G.I.H is adopted, when setting mechanical packer, the value for controlling the weight indicator of workover rig is F, wherein F=G-T, so that the tubing string more than oil pipe is in axially free suspension status.
The embodiment of the present application also provides a kind of be layered and adopts tubing string together, and the tubing string includes:
Layered oil pump, during oil extraction, the layered oil pump are arranged in the top of the upper oil reservoir of oil well;
Oil pipe, one end are connected with the layered oil pump;
Mechanical packer is connected with the other end of the oil pipe, and during oil extraction, the mechanical packer is arranged in oil The top of the lower oil reservoir of well;
Clump weight is set in the other end of the oil pipe, wherein the clump weight is for providing the mechanical packer The required load when setting.
Said one in the embodiment of the present application or multiple technical solutions, at least have the following technical effect that:
Required ballast is set by obtaining the mechanical packer according to the technical parameter of mechanical packer;It obtains Obtain the weight of the single oil pipe used in the mechanical packer and quality, volume and the height of clump weight;According to the pressure Weight, quality, volume and the height of the clump weight of weight, the single oil pipe calculate and obtain the mechanical packer institute The counterweight number of blocks n needed, n >=1;Clump weight described in n blocks is sleeved on the oil pipe, is adopted at the neutral point of tubing string so that layering is same In the lower section of layered oil pump, avoid the hypomere of mechanical packer upper end oil pipe that from will generating mistake because of the pressure of oil pipe upper end Steady bending, and then make sucker rod when pumping, not with oil pipe phase mutual friction, solves prior art middle level and adopt pipe together The technical issues of sucker rod of column is susceptible to eccentric wear with oil pipe, it is therefore prevented that layering is the same as the rod and tube partial-wear for adopting tubing string.
Description of the drawings
Fig. 1 is provided by the embodiments of the present application a kind of for preventing layering with the method flow for the rod and tube partial-wear for adopting tubing string Figure;
Fig. 2 is layering provided by the embodiments of the present application with the structural schematic diagram for adopting tubing string.
Specific implementation mode
In technical solution provided by the embodiments of the present application, ensure that mechanical packer is being set by the dead weight of clump weight The load of Shi Suoxu makes entirely to be divided into the lower section that layered oil pump is in the neutral point for adopting tubing string, to avoid mechanical packing The hypomere of device upper end oil pipe will generate unstability bending because of the pressure of oil pipe upper end, and then sucker rod is made to pump When, not with oil pipe phase mutual friction, to solve, the sucker rod of tubing string is adopted in prior art middle level together and oil pipe is susceptible to eccentric wear Technical problem prevents layering with the rod and tube partial-wear for adopting tubing string.
Below in conjunction with the accompanying drawings to main realization principle, specific implementation mode and its correspondence of the embodiment of the present application technical solution The advantageous effect that can reach is explained in detail.
Embodiment
Referring to FIG. 1, the embodiment of the present application provides a kind of method for preventing the same rod and tube partial-wear for adopting tubing string of layering, institute The method of stating includes:
S101:The mechanical packer, which is obtained, according to the technical parameter of mechanical packer sets required ballast;
S102:Obtain the weight of the single oil pipe used in the mechanical packer and quality, volume and the height of clump weight Degree;
S103:According to the ballast, the weight of the single oil pipe, quality, volume and the height of the clump weight, calculate Obtain the counterweight number of blocks n needed for the mechanical packer, n >=1;
S104:Clump weight described in n blocks is sleeved on the oil pipe, is adopted so that layering is in layering with the neutral point for adopting tubing string The lower section of oil pump.
Referring to FIG. 2, the above method provided by the embodiments of the present application is applied to, a kind of layering is same to adopt tubing string, and the layering is same to adopt Tubing string includes:Layered oil pump 1, oil pipe 2, mechanical packer 4 and production tail pipe 5.Wherein, layered oil pump 1, oil pipe 2, machine Tool formula packer 4 and production tail pipe 5 are sequentially connected;Clump weight 3 is sleeved on oil pipe 2.Layering is the same as the oil production by layer for adopting tubing string selection Pump 1 has 2 fluid courses, and one is along the axis fluid course pumped, another is eccentric fluid course, such as on March 5th, 2003 Disclosed Chinese utility model patent《Oil well layered oil well pump》.Layered oil pump is arranged during oil extraction in the upper of upper oil reservoir 100 Side.Mechanical packer 4 is arranged during oil extraction in the top of lower oil reservoir 200.
Tubing string is set by clump weight ballast mechanical packer 3, and the tubing string of 2 or more oil pipe is made to be in axially free suspension State avoids the pump barrel of layered oil pump 1 from being pressurized and bent become occurs.Meanwhile the dead weight of clump weight 3 can ensure mechanical packer Set required load.
In specific implementation process, layering in order to prevent is held first with the rod and tube partial-wear for adopting tubing string, tool the embodiment of the present application Row S101 clearly sets required ballast T according to the technical parameter of mechanical packer 4 used.Then, S102 is executed to obtain The weight of single oil pipe used in mechanical packer 4 and quality, volume and the height of clump weight.
Obtain mechanical packer 4 set required ballast, the quality of the weight of single oil pipe and clump weight, volume, After height, executes S103 and calculated by iteration according to the breeding block step 2. that above-mentioned parameter calculates needed for acquisition mechanical packer 4 Method calculates required 3 quantity n of clump weight, can specifically be obtained by following formula:
W=V × 7.9 × 10-6×9.8;
In formula:
T-- mechanical packers 4 set required ballast, unit N;
The outer diameter of d1-- clump weights 3, unit mm;
The internal diameter of d2-- clump weights 3, unit mm;
The height of h-- clump weights 3, unit mm;
The volume of V-- clump weights 3, unit mm3
The weight of W-- clump weights 3, unit N;
The single weight of oil pipe used in t-- (2), unit N;
After the quantity n for obtaining required clump weight 3 by executing S103, executes S104 and n blocks clump weight 3 is sleeved on oil pipe 2, So that layering is in the lower section of layered oil pump 1 with the neutral point for adopting tubing string.It is as follows:
Step (1):According to the quantity n of the clump weight 3 calculated, clump weight 3 is inserted on oil pipe 2, is often covered to one At 8.5 meters of root oil pipe 2, in 2 lower end of oil pipe, connection variable buckle is for limiting, until having covered required whole clump weights 3;
Step (2):According to well depth and the entire layering of tubular column structure estimation with the weight G for adopting tubing string;
Step (3):Then layering is set machine by the operating instruction gone into the well according to tubing string with tubing string G.I.H is adopted successively Tool formula packer 4 sets the weight indicator of middle observation workover rig, and it is F, wherein F=G-T to make the value of weight indicator;
Step (4):Tubing hanger is installed, well head is sat, prepares production.
By one or more of the embodiment of the present application technical solution, following technique effect may be implemented:
Required ballast is set by obtaining the mechanical packer according to the technical parameter of mechanical packer;It obtains Obtain the weight of the single oil pipe used in the mechanical packer and quality, volume and the height of clump weight;According to the pressure Weight, quality, volume and the height of the clump weight of weight, the single oil pipe calculate and obtain the mechanical packer institute The counterweight number of blocks n needed, n >=1;Clump weight described in n blocks is sleeved on the oil pipe, is adopted at the neutral point of tubing string so that layering is same In the lower section of layered oil pump, avoid the hypomere of mechanical packer upper end oil pipe that from will generating mistake because of the pressure of oil pipe upper end Steady bending, and then make sucker rod when pumping, not with oil pipe phase mutual friction, solves prior art middle level and adopt pipe together The technical issues of sucker rod of column is susceptible to eccentric wear with oil pipe, it is therefore prevented that layering is the same as the rod and tube partial-wear for adopting tubing string.
Although preferred embodiments of the present invention have been described, it is created once a person skilled in the art knows basic Property concept, then additional changes and modifications may be made to these embodiments.So it includes excellent that the following claims are intended to be interpreted as It selects embodiment and falls into all change and modification of the scope of the invention.
Obviously, various changes and modifications can be made to the invention without departing from essence of the invention by those skilled in the art God and range.In this way, if these modifications and changes of the present invention belongs to the range of the claims in the present invention and its equivalent technologies Within, then the present invention is also intended to include these modifications and variations.

Claims (6)

1. a kind of for preventing layering with the method for the rod and tube partial-wear for adopting tubing string, which is characterized in that the method includes:
The mechanical packer, which is obtained, according to the technical parameter of mechanical packer sets required ballast;
Obtain the weight of the single oil pipe used in the mechanical packer and quality, volume and the height of clump weight;
According to the ballast, the weight of the single oil pipe, quality, volume and the height of the clump weight, calculate described in obtaining Counterweight number of blocks n needed for mechanical packer, n >=1;
Clump weight described in n blocks is sleeved on the oil pipe, so that layering is in the neutral point for adopting tubing string under layered oil pump Side.
2. the method as described in claim 1, which is characterized in that according to the ballast, the single oil pipe weight, described match Quality, volume and the height of pouring weight calculate the counterweight number of blocks n obtained needed for the mechanical packer, especially by as follows Formula obtains:
Wherein, T indicates that mechanical packer sets required ballast;H indicates the height of clump weight;T indicates the list of the oil pipe Root weight;W indicates the weight of clump weight.
3. method as claimed in claim 2, which is characterized in that the weight of the clump weight is obtained especially by following formula:
W=V × 7.9 × 10-6×9.8
Wherein,D1 indicates that the outer diameter of the clump weight, d2 indicate the internal diameter of the clump weight.
4. the method as described in claim 1, which is characterized in that it is described that clump weight described in n blocks is sleeved on the oil pipe, specifically For:
The n blocks clump weight is sleeved on an at least oil pipe, wherein connect from every oil pipe and the mechanical packer The one end connect starts at the 8.5m of every oil pipe for being arranged the clump weight.
5. the method as described in claim 2~4 is any, which is characterized in that the method further includes:
The layering is obtained with the weight G for adopting tubing string;
It will be layered with tubing string G.I.H is adopted, when setting mechanical packer, the value for controlling the weight indicator of workover rig is F, Middle F=G-T, so that the tubing string more than oil pipe is in axially free suspension status.
6. a kind of layering is the same as adopting tubing string, which is characterized in that the tubing string includes:
Layered oil pump, during oil extraction, the layered oil pump are arranged in the top of the upper oil reservoir of oil well;
Oil pipe, one end are connected with the layered oil pump;
Mechanical packer is connected with the other end of the oil pipe, and during oil extraction, the mechanical packer is arranged in oil well The top of lower oil reservoir;
Clump weight is set in the other end of the oil pipe, wherein the clump weight is being sat for providing the mechanical packer Required load when envelope.
CN201510587717.5A 2015-09-15 2015-09-15 A kind of method and layering for preventing rod and tube partial-wear is same to adopt tubing string Active CN105156080B (en)

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Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2405924C1 (en) * 2010-01-11 2010-12-10 Открытое акционерное общество "Татнефть" имени В.Д. Шашина Pumping unit for simultaneous-separate operation of two reservoirs in well
RU2405925C1 (en) * 2009-08-24 2010-12-10 Общество с ограниченной ответственностью Научно-производственная фирма "Пакер" (ООО НПФ "Пакер") Oil well pumping unit for simultaneous separate operation of two reservoirs
CN203114258U (en) * 2012-09-27 2013-08-07 大港油田集团有限责任公司 Three-level layered commingling pipe column
CN203285408U (en) * 2013-04-24 2013-11-13 中国石油天然气股份有限公司 High pressure layered water injection tubular column
CN203822275U (en) * 2014-05-11 2014-09-10 赵宝柱 Device for sand-control separate-zone oil production of oil well
CN104213884A (en) * 2013-06-05 2014-12-17 中国石油天然气股份有限公司 Rod-control type reservoir changing switch of pumping well and reservoir changing oil production method thereof
CN204098847U (en) * 2014-08-26 2015-01-14 天津大港油田钻采技术开发公司 Hydraulic setting layering is with adopting tubing string

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2405925C1 (en) * 2009-08-24 2010-12-10 Общество с ограниченной ответственностью Научно-производственная фирма "Пакер" (ООО НПФ "Пакер") Oil well pumping unit for simultaneous separate operation of two reservoirs
RU2405924C1 (en) * 2010-01-11 2010-12-10 Открытое акционерное общество "Татнефть" имени В.Д. Шашина Pumping unit for simultaneous-separate operation of two reservoirs in well
CN203114258U (en) * 2012-09-27 2013-08-07 大港油田集团有限责任公司 Three-level layered commingling pipe column
CN203285408U (en) * 2013-04-24 2013-11-13 中国石油天然气股份有限公司 High pressure layered water injection tubular column
CN104213884A (en) * 2013-06-05 2014-12-17 中国石油天然气股份有限公司 Rod-control type reservoir changing switch of pumping well and reservoir changing oil production method thereof
CN203822275U (en) * 2014-05-11 2014-09-10 赵宝柱 Device for sand-control separate-zone oil production of oil well
CN204098847U (en) * 2014-08-26 2015-01-14 天津大港油田钻采技术开发公司 Hydraulic setting layering is with adopting tubing string

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