CN207093070U - Casing deformation well Tube-colume for seanching leakage area - Google Patents
Casing deformation well Tube-colume for seanching leakage area Download PDFInfo
- Publication number
- CN207093070U CN207093070U CN201720599463.3U CN201720599463U CN207093070U CN 207093070 U CN207093070 U CN 207093070U CN 201720599463 U CN201720599463 U CN 201720599463U CN 207093070 U CN207093070 U CN 207093070U
- Authority
- CN
- China
- Prior art keywords
- perforate
- packer
- lou
- central tube
- casing deformation
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Landscapes
- Pipe Accessories (AREA)
Abstract
The utility model discloses a kind of casing deformation well Tube-colume for seanching leakage area, set be present and become position in the sleeve pipe in casing deformation well, and the sleeve pipe that the set becomes more than position does not have leak source, when the distance on set change position to the oil reservoir top circle of the casing deformation well exceeds preset range, the casing deformation well Tube-colume for seanching leakage area includes：The plug that is sequentially distributed from bottom to top, under look for Lou packer, eccentric flow controller, on look for Lou packer and oil pipe, wherein, looked under described Lou packer be located at more than oil reservoir top circle, looked on described Lou packer positioned at it is described set become position below, the oil pipe forms oil jacket annular space with sleeve pipe, when the pressure in the oil pipe reaches predetermined pressure, the oil pipe can be connected by the eccentric flow controller with the oil jacket annular space.Casing deformation well Tube-colume for seanching leakage area provided by the utility model, can be applied to position below casing deformation well looks for the omission of examination to alter, and becomes more than position especially suitable for set and becomes the casing deformation well that span is big between position and oil reservoir top circle without leak source, set.
Description
Technical field
Petroleum production engineering field is the utility model is related to, more particularly to a kind of casing deformation well Tube-colume for seanching leakage area.
Background technology
With deepening continuously for oil field development, the frequent steam injection of oil well take turns the continuous expanded by heating of steam soak rear sleeve more,
Easily occurs the situation such as sleeve pipe damage, run-down under thermal stress effect.Once there is casing leakage in oil well, does not only result in injection steam
Heat loss increases, and sleeve pipe damage, leakage near sites water layer water will channelling come to cause a large amount of water outlets of oil well, and to
Oil reservoir pours in down a chimney, and oil well is not produced normally, or even be forced closing well.In order to ensure the normal production of oil well, it is necessary to be damaged to sleeve pipe
The bad position missed is blocked.
To reach the purpose of closure, it is necessary first to find out accurate casing leakage position, then it is implemented to seal accordingly
It is stifled.At present, generally using Y521-150 packers look for Lou.But the packer be only applicable to sleeve pipe do not deform it is complete
In good oil well.As casing deformation causes local reducing, because packer external diameter can not become section by the set greatly, set is caused to conjugate
Putting can not carry out looking for the omission of examination to alter with setting of casing.
Therefore, it is necessary to look for the omission of examination to alter for position below casing deformation well, a kind of special casing deformation well Tube-colume for seanching leakage area is proposed
The defects of to overcome prior art.
Utility model content
The purpose of this utility model is to provide a kind of casing deformation well Tube-colume for seanching leakage area, can be applied to looking for for position below casing deformation well
The omission of examination is altered, and is become more than position especially suitable for set and is become the casing deformation well that span is big between position and oil reservoir top circle without leak source, set.
Above-mentioned purpose of the present utility model can be realized using following technical proposal：
Set be present and become position, and the set that the set becomes more than position in a kind of casing deformation well Tube-colume for seanching leakage area, the sleeve pipe in casing deformation well
No leak source is managed, when the distance on set change position to the oil reservoir top circle of the casing deformation well exceeds preset range, the casing deformation well is looked for Lou
Tubing string includes：The plug that is sequentially distributed from bottom to top, under look for Lou packer, eccentric flow controller, on look for Lou packer and oil pipe,
Wherein, looked under described Lou packer be located at more than oil reservoir top circle, it is described on look for Lou packer be located at the set
Become below position, the oil pipe forms oil jacket annular space with sleeve pipe, described inclined when the pressure in the oil pipe reaches predetermined pressure
The oil pipe can be connected by heart flow controller with the oil jacket annular space.
In one preferred embodiment, the preset range is：Within 50 meters.
In one preferred embodiment, looked on described Lou packer include：Top connection, upper shield, central tube, glue
Cylinder, lower shield and lower contact, wherein,
The inner side of the top connection lower end is fixedly connected with the upper end of the central tube, its close to the outside of lower end with it is described
Upper shield is fixedly connected；
The inner side of the lower contact upper end is fixedly connected with the lower end of the central tube, its close to the outside of upper end with it is described
Lower shield is fixedly connected；
The outer sheath of the central tube is provided with the packing element；Be provided with the tube wall of the central tube can with the packing element
The perforate of portion's connection；
The both ends of the packing element are spacing by the upper shield, lower shield.
In one preferred embodiment, the perforate of the central tube is opened including first in the middle part of the packing element
Hole, the number of first perforate is multiple, is evenly arranged along the circumferencial direction of the central tube.
In one preferred embodiment, the perforate of the central tube also includes the positioned at the first perforate both sides
Two perforates and the 3rd perforate, the number of second perforate or the 3rd perforate is multiple, along the circumferencial direction of the central tube
It is evenly arranged.
In one preferred embodiment, that Lou packer is looked on described sets pressure as more than 1 MPa.
In one preferred embodiment, looked under described Lou packer include：Top connection, upper shield, central tube, glue
Cylinder, lower shield and lower contact, wherein,
The inner side of the top connection lower end is fixedly connected with the upper end of the central tube, its close to the outside of lower end with it is described
Upper shield is fixedly connected；
The inner side of the lower contact upper end is fixedly connected with the lower end of the central tube, its close to the outside of upper end with it is described
Lower shield is fixedly connected；
The outer sheath of the central tube is provided with the packing element；Be provided with the tube wall of the central tube can with the packing element
The perforate of portion's connection；
The both ends of the packing element are spacing by the upper shield, lower shield.
In one preferred embodiment, the perforate of the central tube is opened including first in the middle part of the packing element
Hole, the number of first perforate is multiple, is evenly arranged along the circumferencial direction of the central tube.
In one preferred embodiment, the perforate of the central tube also includes the positioned at the first perforate both sides
Two perforates and the 3rd perforate, the number of second perforate or the 3rd perforate is multiple, along the circumferencial direction of the central tube
It is evenly arranged.
In one preferred embodiment, that Lou packer is looked under described sets pressure as more than 1 MPa.
The characteristics of the utility model and advantage are：Casing deformation well Tube-colume for seanching leakage area provided herein is distinguished from bottom to top by instrument
For by plug, on look for Lou packer, eccentric flow controller, under look for Lou packer connect and formed with oil pipe.Look under in use, and Lou insulating
To more than oil reservoir top circle under device, the oil pipe forms oil jacket annular space with sleeve pipe, when the pressure in the oil pipe reaches predetermined pressure
When, the oil pipe can be connected by the eccentric flow controller with the oil jacket annular space.Tube-colume for seanching leakage area all parts by oil pipe 5 according to
Secondary connection and G.I.H specified location, when looking for leakage, by being looked on setting, Lou packer looks for Lou packer with and cooperation is corresponding
Suppress operation and can realize the leak source that set becomes below position, on the whole can look for Lou packer it is limited to set deblocking circulation secondary
In number, that realizes position sleeve pipe below set change position looks for the omission of examination to alter, and overcoming common Tube-colume for seanching leakage area in the prior art can not realize
Casing deformation well set, which becomes below position, looks for leakage work.Further, when specify that look for Lou packer looked for under Lou packer it is corresponding
After sleeve pipe has leak source, further upper lifting pipe post can also suppress and look for Lou, so as to this exist leak source on look for Lou packing
Device and under look in the sleeve pipe between Lou packer and accurately to determine leak source position, it is easy to operate when looking for leakage on the whole, efficient.
With reference to following explanation and accompanying drawing, the particular implementation of the application is disclose in detail, specifies the original of the application
Reason can be in a manner of adopted.It should be understood that presently filed embodiment is not so limited in scope.In appended power
In the range of the spirit and terms that profit requires, presently filed embodiment includes many changes, modifications and is equal.
The feature for describing and/or showing for a kind of embodiment can be in a manner of same or similar one or more
Used in individual other embodiment, it is combined with the feature in other embodiment, or substitute the feature in other embodiment.
It should be emphasized that term "comprises/comprising" refers to the presence of feature, one integral piece, step or component when being used herein, but simultaneously
It is not excluded for the presence or additional of one or more further features, one integral piece, step or component.
Brief description of the drawings
Fig. 1 is a kind of structural representation of the casing deformation well Tube-colume for seanching leakage area provided in the application embodiment；
Fig. 2 is the structural representation that a kind of Tube-colume for seanching leakage area looks for Lou packer in the application embodiment.
Description of reference numerals：
Plug 1；Eccentric flow controller 3；Oil pipe 5；Set becomes position 6；On look for Lou packer 2A；Under look for Lou packer 2B；On connect
First 21；O-ring seal 22；Upper shield 23；Central tube 24；First perforate 241；Second perforate 242；3rd perforate 243；Packing element
25；Lower shield 26；Lower contact 27；First limited step 210；Second limited step 270.
Embodiment
Below in conjunction with the drawings and specific embodiments, the technical solution of the utility model is elaborated, it should be understood that
These embodiments are merely to illustrate the utility model rather than limitation the scope of the utility model, new having read this practicality
After type, modification of the those skilled in the art to the various equivalent form of values of the present utility model each falls within the application appended claims
In limited range.
It should be noted that when element is referred to as " being arranged at " another element, it can be directly on another element
Or there may also be element placed in the middle.When an element is considered as " connection " another element, it can be directly connected to
To another element or it may be simultaneously present centering elements.Term as used herein " vertical ", " horizontal ", " on ",
" under ", "left", "right" and similar statement for illustrative purposes only, it is unique embodiment to be not offered as.
Unless otherwise defined, all of technologies and scientific terms used here by the article and the technical field of the application is belonged to
The implication that technical staff is generally understood that is identical.The term used in the description of the present application is intended merely to description tool herein
The purpose of the embodiment of body, it is not intended that in limitation the application.Term as used herein "and/or" includes one or more
The arbitrary and all combination of related Listed Items.
The utility model provides a kind of casing deformation well Tube-colume for seanching leakage area, and can be applied to position below casing deformation well looks for the omission of examination to alter,
Become more than position especially suitable for set and become the casing deformation well that span is big between position and oil reservoir top circle without leak source, set.
Referring to Fig. 1, providing a kind of casing deformation well Tube-colume for seanching leakage area in the application embodiment, the sleeve pipe in the casing deformation well is deposited
Become position 6 in set, and the sleeve pipe that the set becomes position more than 6 does not have leak source, the set of the casing deformation well becomes position 6 to oil reservoir top circle
Distance when exceeding preset range, the casing deformation well Tube-colume for seanching leakage area includes：The plug 1 that is sequentially distributed from bottom to top, under look for and Lou sealing
Every device 2B, eccentric flow controller 3, on look for Lou packer 2A and oil pipe 5, wherein, looked under described Lou packer 2B be located at the oil
More than Ceng Ding circle, it is described on look for Lou packer 2A become positioned at the set below position, the oil pipe 5 and sleeve pipe form oil jacket ring
Sky, when the pressure in the oil pipe 5 reaches predetermined pressure, the eccentric flow controller 3 can be by the oil pipe 5 and the oil jacket ring
Kongxiang connects.
When the distance that the set of the casing deformation well becomes position 6 to oil reservoir top circle exceeds the preset range, that is to say, that when
Oil reservoir top circle to cover become position 6 apart from it is longer when, can set two to look for leakage packer in Tube-colume for seanching leakage area, respectively on look for Lou
Packer 2A looks for Lou packer 2B with.Specifically, the preset range can be within 50 meters.Certainly, the preset range
The example above is not limited to, the application does not make specific limit herein.
When looking for leakage, in order in the limited fatigue limit of packer, reduce packer setting deblocking number as far as possible, simultaneously
Leakage efficiency is looked in raising, can first with two look for Lou packer find out preliminary run-down section, then enter in run-down section found out
One step look for Lou, so as to accurately obtain leak source position.
Specifically, the casing deformation well Tube-colume for seanching leakage area look for Lou packer can include above look for Lou packer 2A and under look for Lou envelope
Every device 2B, accordingly, the casing deformation well Tube-colume for seanching leakage area includes：The plug 1 that is sequentially distributed from bottom to top, under look for Lou packer 2B,
Eccentric flow controller 3, on look for Lou packer 2A and oil pipe 5.
Looked on above-mentioned Lou packer 2A or under look for Lou packer 2B be can tripping in set become packer of the position below 6, phase
Its entire outer diameter is smaller for.Specifically, the maximum outside diameter of the packer can be according to the internal diameter and set of actual sleeve pipe
The degree of pipe deformation determines.In general, it can 20 millimeter smaller than the maximum outside diameter of common packer.It is for example, normal
The internal diameter of sleeve pipe be 159 millimeters to 161 millimeter when, it is described on look for Lou packer 2A or under look for Lou packer 2B internal diameter can
Think 132 millimeters, and the internal diameter of the common packer can be 152 to 148 or so.
As shown in Fig. 2 in a specific embodiment, it is described on look for Lou packer 2A can include：Top connection 21,
Upper shield 23, central tube 24, packing element 25, lower shield 26 and lower contact 27, wherein, the inner side of the lower end of top connection 21 with it is described
The upper end of central tube 24 is fixedly connected, and it is fixedly connected close to the outside of lower end with the upper shield 23；In the lower contact 27
The inner side at end is fixedly connected with the lower end of the central tube 24, and it is fixedly connected close to the outside of upper end with the lower shield 26；
The outer sheath of the central tube 24 is provided with the packing element 25；Be provided with the tube wall of the central tube 24 can with the packing element 25
The perforate of portion's connection.The both ends of the packing element 25 are spacing by the upper shield 23, lower shield 26.
In the present embodiment, it is in hollow revolution build that top connection 21 is overall, and the hollow space is through hole, and it has
There are relative top and bottom.Wherein, internal thread can be provided with close to the inner side of upper end, to facilitate the other downhole tools of connection
Or part；Upper shield 23 can be fixed with close to the outside of its lower end, can be with the upper end of central tube 24 close to the inner side of lower end
It is mutually fixed.Specifically, the fixed form can be threaded connection.When the fixed form for threaded connection when, it is described on connect
First 21 are provided with external screw thread on the outside of lower end, are provided with the inside of the upper end of upper shield 23 and the lower end of top connection 21
The internal thread that the external screw thread in outside matches.The top connection 21 is provided with internal thread, the center on the inside of its lower end
Pipe 24 is provided with the external screw thread for matching with the internal thread of the lower end inside of top connection 21 on the outside of upper end.
In the present embodiment, the overall structure of lower contact 27 and the structure of the top connection 21 are similar, overall in hollow
Revolution build, the hollow space is through hole, and it has relative top and bottom.Wherein, can close to the outside of lower end
To be provided with external screw thread, to facilitate the other downhole tools of connection or part；Lower shield can be fixed with close to the outside of its upper end
26, can mutually it be fixed with the lower end of central tube 24 close to the inner side of upper end.Connect specifically, the fixed form can be screw thread
Connect.When the fixed form is is threadedly coupled, the lower contact 27 is provided with external screw thread, the lower shield on the outside of upper end
Cover the internal thread for being provided with the inside of 26 lower ends and matching for the external screw thread on the outside of the upper end of lower contact 27.The lower contact
27 are provided with internal thread on the inside of its upper end, and the central tube 24 is provided with the outside of lower end to be used for and connect under described
The external screw thread that internal thread on the inside of first 27 upper end matches.
In the present embodiment, it is in hollow sleeve-shaped that upper shield 23 is overall, and the hollow space is through hole.On described
Shield 23 has relative top and bottom, can be provided with close to the inner side of its upper end for coordinating with the top connection 21
Internal thread, the upper end of the packing element 25 is set on the inside of its underpart, it is spacing for being carried out to the upper end of packing element 25, ensure glue
Cylinder 25 set changed with unset state and setting with unset state when, the upper end of packing element 25 can be by reliably spacing.
In the present embodiment, the overall structure of lower shield 26 and the structure of the upper shield 23 are similar, the lower shield
26 entirety are in hollow sleeve-shaped, and the hollow space is through hole.The lower shield 26 has relative top and bottom, leans on
The inner side of its nearly lower end can be provided with the internal thread for coordinating with the lower contact 27, be set on the inside of its top described
The lower end of packing element 25, it is spacing for being carried out to the bottom of packing element 25, ensure packing element 25 set with unset state and set with
When unset state is changed, the lower end of packing element 25 can be by reliably spacing.
In the present embodiment, it is in hollow body that the central tube 24 is overall, and its hollow space is through hole, described
The outer sheath of central tube 24 is provided with the packing element 25；Perforate is provided with the tube wall of the central tube 24.Look on described and Lou sealing
When device 2A needs to seal, by suppressing, hydraulic pressure enters blister cavities in packing element 25 by the perforate, is strutted by hydraulic pressure and expansion glue
Cylinder 25, its outer expression is close to shaft in wall, so as to seal oil sets annular space, realize setting for packer.
Specifically, first perforate 241 of the perforate of the central tube 24 including being located at the middle part of packing element 25, described first
The number of perforate 241 is multiple, is evenly arranged along the circumferencial direction of the central tube 24, so as to ensure that the packing element 25 can quilt
Uniformly reliably strut, setting for Lou packer 2A is looked in realization.
Further, the perforate of the central tube 24 also includes the second perforate 242 positioned at the both sides of the first perforate 241
With the 3rd perforate 243, the number of the perforate 243 of the second perforate 242 or the 3rd is multiple, along the circumference of the central tube 24
Direction is evenly arranged.When the perforate of the central tube 24 is also distributed multigroup along the axial direction of the central tube 24, it is ensured that
When suppressing, hydraulic pressure quickly and efficiently can enter in packing element 25 from multigroup perforate looks for Lou packer 2A seat so as to realize
Envelope, set on the whole efficiently and relatively low to the pressure requirements of hydraulic pressure.Specifically, the pressure that sets that Lou packer 2A is looked on described is
More than 1 MPa.For example, can be 1 MPa, when the pressure difference in the pressure in oil pipe 5 and oil jacket annular space reaches 1 MPa, on this
Look for Lou packer 2A can be achieved to set.
Specifically, the lower end position of upper shield 23 described in the face of the second perforate 242；The face of 3rd perforate 243
The upper end position of the lower shield 26.Wherein, when the lower end position of the upper shield 23 sets to suppress, the packing element 25 is led
The position to be exerted a force.Likewise, the upper end position of the lower shield shape is when suppressing to set, the position mainly to be exerted a force to the packing element 25
Put.When the upper end position in the lower end of the upper shield 23 and lower shield 26 sets the second perforate 242 and the 3rd perforate of face
When 243, when setting, the first perforate 241 positioned at the middle part of central tube 24 coordinates, and realization is reliably set, and the packing element 25
Both ends can be reliably spacing.It is as follows specifically to set process：The outside of the first perforate 241 when suppressing due to middle part does not limit
Position, pressure fluid enter from the first perforate 241, the part of packing element 25 are strutted first so that pressure fluid is simultaneously from the He of the second perforate 242
Enter at 3rd perforate 243 in packing element 25, realization is set.During due to setting, the pressure fluid of entrance at second perforate 242
Pressure and the lower end of upper shield 23 coordinate caused by under clamping force effect, the top of the packing element 25 is by reliable spacing；
Likewise, the pressure of the pressure fluid entered at the 3rd perforate 243 coordinates caused clamp with the upper end of lower shield 26
Under power effect, the bottom of the packing element 25 is by reliable spacing.
In one embodiment, the top connection 21 close to the outside of its lower end formed with the first limited step 210,
The lower contact 27 is provided with the second limited step 270 on the outside of its upper end.Wherein, first limited step 210 can
So that positioned at the top of second perforate 242, stop, second limiting stand will not be formed to the pressure fluid of the second perforate 242
Rank 270 can be located at the bottom of the 3rd perforate 243, the pressure fluid of the 3rd perforate 243 will not be formed and stopped.In addition, work as
The top connection 21 close to the outside of its lower end formed with the first limited step 210 when, the upper end of the corresponding packing element 25 can
To obtain a minimum limit space, so that the upper end of the packing element 25 can be by reliably spacing.Likewise, when described
When lower contact 27 is provided with the second limited step 270 on the outside of its upper end, the lower end of the corresponding packing element 25 can be obtained
A minimum limit space is obtained, so that the lower end of the packing element 25 can be by reliably spacing.
In the present embodiment, the packing element 25 has relative top and bottom, and its entirety is set in outside central tube 24.
The material of the packing element 25 can be made up of corrosion resistant flexible rubber.The lower surface of the top connection 21, upper shield
23 inner side and the outside of the central tube 24 are formed with the first limiting section that the upper end of packing element 25 is set for card；Connect under described
First 27 upper surface, the outside of the inner side of lower shield 26 and the central tube 24 for card formed with setting the lower end of packing element 25
Second limiting section.Specifically, first limiting section can be annular housing, second limiting section can also be annular housing
Form.
Looked on described Lou packer 2A there is non-set state and to set state, it is described it is non-set state under, the glue
The external diameter of cylinder 25 is less than or equal to the external diameter of the upper shield 23 and lower shield 26, in order to look on described Lou packer 2A sitting
Before envelope during G.I.H, packing element 25 is protected, situations such as preventing packing element 25 from wearing.Wherein, non-shape is set described
Under state, it is described on look for Lou packer 2A maximum outside diameter be 132 millimeters.For existing packer, the application's is upper
Lou packer 2A maximum outside diameter is looked for reduce 20 millimeters, packer 2A can be to set change position so that being looked on this Lou
The size of less than 6 sleeve pipe matches, so as to realize that set becomes looking for Lou for sleeve pipe of the position below 6.Certainly, look on described and Lou insulating
Device 2A maximum outside diameter can also be according to the different and different of practical application scene, such as when the change of original casing size or cover
During pipe deformation extent difference, the maximum outside diameter of the packer can be adjusted adaptively, and specific the application does not make herein
It is specific to limit.
In addition, the upper shield 23 and the position of the top connection 21 cooperation and the lower shield 26 and the lower contact 27
The position of cooperation is additionally provided with O-ring seal 22, and when being set for ensureing to suppress, pressure fluid will not be let out from the position of above-mentioned cooperation
Spill.
Under look for Lou packer 2B 26S Proteasome Structure and Function with it is described on look for that Lou packer 2A's is identical, specifically, this, Ke Yican
According to the specific descriptions for above looking for Lou packer 2A, the application will not be repeated here.
On the whole, looked on the minor diameter in the application Lou packer 2A and under look for Lou packer 2B can coordinate with flow controller
Use.In use, being connected by oil pipe 5 by design attitude in Tube-colume for seanching leakage area tripping in casing deformation well, after installing well head, utilized on ground
Cementing truck water filling into oil pipe 5 is suppressed, and the spring that the valve ball of eccentric flow controller 3 compresses under hydraulic action, sidewise hole is opened
Throttling action is played, now the pressure in oil pipe 5 is higher than the pressure of oil jacket annular space, after pressure difference is higher than 1 MPa (MPa), liquid
Looked for from above Lou packer 2A, under look for the Lou packer 2B perforate of central tube 24 to enter blister cavities in packing element 25, strutted by hydraulic pressure and
Packing element 25 is expanded, its outer expression is close to shaft in wall, so as to seal oil sets annular space, now packer is completed to set.After
It is continuous to suppress, sleeve pipe look for Lou.Bleed off pressure in oil pipe 5, above look for Lou packer 2A and under look for Lou packer 2B recovery, insulate
Device is unsealed, and the packer can repeatedly be set, unsealed, single set suppress can determine that out look for Lou packer 2A looked for Lou with
Sleeve pipe between packer 2B whether there is leak source.If in the presence of, looked on determining Lou packer 2A and under look for Lou packing
In casing section between device 2B, further, upper lifting pipe post, after being suppressed, according to pressure change look for Lou, so as to essence
Really determine to look for Lou packer 2A and under look for the leak source position in the casing section between Lou packer 2B.
Eccentric flow controller 3 is used to produce chock pressure difference, look on auxiliary is described Lou packer 2A and under look for Lou packer 2B sit
Envelope.Specifically, looked on described Lou packer 2A and under look for that Lou packer 2B is set when, after well head is installed, in ground utilization
Cementing truck water filling into oil pipe 5 is suppressed, and the spring that the valve ball of eccentric flow controller 3 compresses under hydraulic action, sidewise hole is opened
Throttling action is played, now the pressure in oil pipe 5 is higher than the pressure of oil jacket annular space, after pressure difference is higher than 1 MPa (MPa), liquid
Looked for from above Lou packer 2A and under look for Lou packer 2B central tube 24 perforate into blister cavities in packing element 25, strutted by hydraulic pressure
With expansion packing element 25, its outer expression is close to shaft in wall, so as to seal oil sets annular space, now on look for Lou packer 2A with
Under look for Lou packer 2B complete set.
Tube-colume for seanching leakage area provided herein from bottom to top instrument be respectively by plug 1, on look for Lou packer 2A, eccentric section
Stream device 3, under look for Lou packer 2B and oil pipe 5 to connect formation.Looked under in use, under Lou packer 2B to more than oil reservoir top circle, institute
State oil pipe 5 and form oil jacket annular space, when the pressure in the oil pipe 5 reaches predetermined pressure, the eccentric energy of flow controller 3 with sleeve pipe
The oil pipe 5 is connected with the oil jacket annular space.Tube-colume for seanching leakage area all parts are sequentially connected by oil pipe 5 and G.I.H refers to
Positioning is put, when looking for leakage, by looked on setting Lou packer 2A and under look for Lou packer 2B and coordinate suppress operation accordingly can be with
Realize that set is become position 6 and looked for Lou with cased, the i.e. achievable set of a set of Tube-colume for seanching leakage area of tripping in becomes position position below 6 set on the whole
Pipe looks for the omission of examination to alter, and overcoming common Tube-colume for seanching leakage area in the prior art can not realize that casing deformation well set becomes position and looks for leakage work below 6
Make.Further, when specify that look for that Lou packer 2A looks for that Lou packer 2B corresponds to sleeve pipe and leak source be present with after, can also enter
One step upper lifting pipe post suppress and looked for Lou, so as to this exist leak source on look for Lou packer 2A with look for Lou packer 2B it
Between it is accurate in sleeve pipe determine leak source position, it is easy to operate when looking for leakage on the whole, efficient.
Under a specific usage scenario, in use, instrument is sequentially connected by oil pipe 5 and tripping in design attitude.Dress
After good well head, on ground, using cementing truck, the water filling into oil pipe 5 is suppressed, and the valve ball of eccentric flow controller 3 pushes in hydraulic action
The spring of contracting, sidewise hole are opened and play throttling action, and now the pressure in oil pipe 5 is higher than the pressure of oil jacket annular space, when pressure difference height
After 1MPa, liquid looked for simultaneously from two Lou the respective central tube 24 of packer enter blister cavities in packing element 25, by hydraulic pressure strut with
Packing element 25 is expanded, its outer surface is close to shaft in wall, so as to seal oil sets annular space, two are looked for Lou packer completion to sit
Envelope.Continue to suppress, the oil jacket annular space that liquid enters through the eccentric sidewise hole of flow controller 3, to two sleeve pipes looked between Lou packer
Look for Lou.When pressure reaches 15MPa, after voltage stabilizing 10min minutes, if pressure drop is more than 0.5MPa, checking two, which is looked for, Lou to be insulated
Sleeve pipe between device has run-down.If pressure drop is less than 0.5MPa, show two look for Lou packer between sleeve pipe it is intact.Now bleed off
In oil pipe 5 pressure two look for Lou the respective packing element 25 of packer reclaim, removing seal for packer, upper lifting pipe post is from bottom to top paragraph by paragraph to two
The individual sleeve pipe looked between Lou packer look for Lou, and casing leakage particular location is determined by pressure change.Wherein, the pressure
Power change come determine casing leakage particular location repeat suppress to 15MPa when, after voltage stabilizing 10min minutes, if pressure drop is big
In 0.5MPa, then it is run-down to verify that the sleeve pipe in the length section has.If pressure drop is less than 0.5MPa, show the sleeve pipe in the length section
It is intact.
Herein cited any digital value all include between lower limit to higher limit with the lower value of an incremented and
The all values of upper value, the interval of at least two units between any lower value and any much higher value be present.For example, such as
Fruit elaborates that the quantity of part or the value of process variable (such as temperature, pressure, time etc.) are from 1 to 90, preferably from 20
To 80, more preferably from 30 to 70, then purpose is to illustrate that such as 15 to 85,22 are also clearly listed in the specification arrives
68th, 43 to 51,30 to 32 is equivalent.For the value less than 1, it is 0.0001,0.001,0.01,0.1 suitably to think a unit.
These are only intended to the example clearly expressed, it is believed that the numerical value enumerated between minimum and peak is possible to
Combination is all expressly set forth in the specification in a similar manner.
Unless otherwise indicated, all scopes all include all numerals between end points and end points.It is used together with scope
" about " or " approximation " be suitable for two end points of the scope.Thus, " about 20 to 30 " are intended to covering " about 20 to about
30 ", including at least the end points indicated.
All articles and reference disclosed, including patent application and publication, for various purposes by quoting knot
Together in this.Describe the term " substantially by ... forms " of combination should include determined by element, composition, part or step and reality
Other elements, composition, part or the step of the basic novel feature of the combination are not influenceed in matter.Using term "comprising" or
" comprising " describes the combination of element here, composition, part or step it is also contemplated that substantially by these elements, composition, part
Or the embodiment that step is formed.Here by using term " can with ", it is intended to which illustrate that " can with " include is described any
Attribute is all optional.
Multiple element, composition, part or step can be provided by single integrated component, composition, part or step.It is alternative
Ground, single integrated component, composition, part or step can be divided into multiple element, composition, part or the step of separation.It is used for
The open "a" or "an" for describing element, composition, part or step is not said to exclude other elements, composition, part
Or step.
Above-mentioned each embodiment in this specification is described by the way of progressive, identical between each embodiment
Similar portion is cross-referenced, and what each embodiment stressed is and other embodiment difference.
Several embodiments of the present utility model are the foregoing is only, although the embodiment disclosed by the utility model is such as
On, but the content is only to facilitate the embodiment for understanding the utility model and using, it is new to be not intended to limit this practicality
Type.Any the utility model person of ordinary skill in the field, the spirit and scope disclosed by the utility model are not being departed from
On the premise of, any modification and change, but patent of the present utility model can be made in the formal and details of embodiment
Protection domain, it must be still defined by the scope that appended claims are defined.
Claims (10)
1. a kind of casing deformation well Tube-colume for seanching leakage area, it is characterised in that the sleeve pipe in casing deformation well has set and becomes position, and the set becomes position
Sleeve pipe above does not have leak source, when the distance on set change position to the oil reservoir top circle of the casing deformation well exceeds preset range, the set
Becoming well Tube-colume for seanching leakage area includes：The plug that is sequentially distributed from bottom to top, under look for Lou packer, eccentric flow controller, on look for leakage packer
And oil pipe,
Wherein, looked under described Lou packer be located at more than oil reservoir top circle, it is described on look for Lou packer conjugated positioned at the set
Put following, the oil pipe and sleeve pipe formation oil jacket annular space, when the pressure in the oil pipe reaches predetermined pressure, the eccentric section
The oil pipe can be connected by stream device with the oil jacket annular space.
2. casing deformation well Tube-colume for seanching leakage area as claimed in claim 1, it is characterised in that the preset range is：Within 50 meters.
3. casing deformation well Tube-colume for seanching leakage area as claimed in claim 1, it is characterised in that looked on described Lou packer include：Top connection,
Upper shield, central tube, packing element, lower shield and lower contact, wherein,
The inner side of the top connection lower end is fixedly connected with the upper end of the central tube, and it is close to the outside of lower end and the upper shield
Cover is fixedly connected；
The inner side of the lower contact upper end is fixedly connected with the lower end of the central tube, and it is close to the outside of upper end and the lower shield
Cover is fixedly connected；
The outer sheath of the central tube is provided with the packing element；Be provided with the tube wall of the central tube can be with connecting inside the packing element
Logical perforate；
The both ends of the packing element are spacing by the upper shield, lower shield.
4. casing deformation well Tube-colume for seanching leakage area as claimed in claim 3, it is characterised in that the perforate of the central tube is included positioned at described
The first perforate in the middle part of packing element, the number of first perforate is multiple, is evenly arranged along the circumferencial direction of the central tube.
5. casing deformation well Tube-colume for seanching leakage area as claimed in claim 4, it is characterised in that the perforate of the central tube also includes being located at institute
The second perforate and the 3rd perforate of the first perforate both sides are stated, the number of second perforate or the 3rd perforate is multiple, along institute
The circumferencial direction for stating central tube is evenly arranged.
6. casing deformation well Tube-colume for seanching leakage area as claimed in claim 5, it is characterised in that the pressure that sets that Lou packer is looked on described is
More than 1 MPa.
7. casing deformation well Tube-colume for seanching leakage area as claimed in claim 1, it is characterised in that looked under described Lou packer include：Top connection,
Upper shield, central tube, packing element, lower shield and lower contact, wherein,
The inner side of the top connection lower end is fixedly connected with the upper end of the central tube, and it is close to the outside of lower end and the upper shield
Cover is fixedly connected；
The inner side of the lower contact upper end is fixedly connected with the lower end of the central tube, and it is close to the outside of upper end and the lower shield
Cover is fixedly connected；
The outer sheath of the central tube is provided with the packing element；Be provided with the tube wall of the central tube can be with connecting inside the packing element
Logical perforate；
The both ends of the packing element are spacing by the upper shield, lower shield.
8. casing deformation well Tube-colume for seanching leakage area as claimed in claim 7, it is characterised in that the perforate of the central tube is included positioned at described
The first perforate in the middle part of packing element, the number of first perforate is multiple, is evenly arranged along the circumferencial direction of the central tube.
9. casing deformation well Tube-colume for seanching leakage area as claimed in claim 8, it is characterised in that the perforate of the central tube also includes being located at institute
The second perforate and the 3rd perforate of the first perforate both sides are stated, the number of second perforate or the 3rd perforate is multiple, along institute
The circumferencial direction for stating central tube is evenly arranged.
10. casing deformation well Tube-colume for seanching leakage area as claimed in claim 9, it is characterised in that Lou packer is looked under described sets pressure
For more than 1 MPa.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720599463.3U CN207093070U (en) | 2017-05-26 | 2017-05-26 | Casing deformation well Tube-colume for seanching leakage area |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720599463.3U CN207093070U (en) | 2017-05-26 | 2017-05-26 | Casing deformation well Tube-colume for seanching leakage area |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207093070U true CN207093070U (en) | 2018-03-13 |
Family
ID=61551038
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720599463.3U Active CN207093070U (en) | 2017-05-26 | 2017-05-26 | Casing deformation well Tube-colume for seanching leakage area |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207093070U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109025892A (en) * | 2018-08-16 | 2018-12-18 | 中国石油天然气股份有限公司 | Leakage method is tested in sand washing below the set height of casing deformation well |
| CN110748315A (en) * | 2018-07-23 | 2020-02-04 | 中国石油化工股份有限公司 | Method for treating casing damage of oil-water well |
| CN111878069A (en) * | 2020-08-04 | 2020-11-03 | 华信唐山石油装备有限公司 | Composite continuous pipe cable oil-water well casing leakage finding system and method |
| CN111894560A (en) * | 2020-08-14 | 2020-11-06 | 中国石油化工股份有限公司 | Leakage detection and plugging method while drilling in drilling process |
| CN113494288A (en) * | 2020-04-08 | 2021-10-12 | 中国石油天然气股份有限公司 | Oil pipe leakage finding method and well repairing method |
-
2017
- 2017-05-26 CN CN201720599463.3U patent/CN207093070U/en active Active
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110748315A (en) * | 2018-07-23 | 2020-02-04 | 中国石油化工股份有限公司 | Method for treating casing damage of oil-water well |
| CN109025892A (en) * | 2018-08-16 | 2018-12-18 | 中国石油天然气股份有限公司 | Leakage method is tested in sand washing below the set height of casing deformation well |
| CN113494288A (en) * | 2020-04-08 | 2021-10-12 | 中国石油天然气股份有限公司 | Oil pipe leakage finding method and well repairing method |
| CN113494288B (en) * | 2020-04-08 | 2023-08-22 | 中国石油天然气股份有限公司 | Oil pipe leakage finding method and well repairing method |
| CN111878069A (en) * | 2020-08-04 | 2020-11-03 | 华信唐山石油装备有限公司 | Composite continuous pipe cable oil-water well casing leakage finding system and method |
| CN111894560A (en) * | 2020-08-14 | 2020-11-06 | 中国石油化工股份有限公司 | Leakage detection and plugging method while drilling in drilling process |
| CN111894560B (en) * | 2020-08-14 | 2023-11-14 | 中国石油化工股份有限公司 | Leakage-detection-while-drilling plugging method in drilling process |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN207093070U (en) | Casing deformation well Tube-colume for seanching leakage area | |
| CN107313767A (en) | Tube-colume for seanching leakage area and its look for leakage process | |
| CN102071900B (en) | Custom-pressure expandable naked eye packer | |
| CN201883994U (en) | Self-pressure-retaining expansion open hole packer | |
| CN104790903A (en) | Spanning type packer capable of achieving repeated setting | |
| CN106761554A (en) | The pressure relief device in deep water hydrocarbon casing trap space | |
| CN104234647A (en) | Underground opening self-locking casing centering device | |
| CN107178363A (en) | Casing deformation well Tube-colume for seanching leakage area and its look for leakage technique | |
| CN104213888A (en) | Down-hole steam injection string of thick-oil thermal production well | |
| CN203808896U (en) | Long-section casing damage well expansion pipe double-card casing pipe layered packing repairing device | |
| CN110469290A (en) | Leakproof two-stage water injection packer | |
| CN204899850U (en) | Novel compound bridging plug of ball cage | |
| CN201428405Y (en) | Patch device for casing damaged well | |
| CN206957636U (en) | Look for leakage packer | |
| CN110500043A (en) | Cementing system and casing joint | |
| CN205297426U (en) | Bore hole is with recoverable reducing inflation awl | |
| CN111502622A (en) | Concentric layered steam drive pipe column structure and layered steam drive method thereof | |
| CN108643888A (en) | Casing patching section pressure-bearing characterization processes tubing string and method | |
| CN206071531U (en) | Fireflood bridging plug | |
| CN206592098U (en) | A kind of pitching deblocking packer | |
| CN204899838U (en) | Compound bridging plug of ball cage | |
| CN200985759Y (en) | Expansion casing tube device having cushioning capacity | |
| CN109138933A (en) | Elastic screen and sand control pipe | |
| CN205172513U (en) | Bridging plug device based on expandable casing | |
| CN109403929B (en) | Hydraulic pumping type downhole choke and use method thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |