CN203729908U - Centralizer - Google Patents
Centralizer Download PDFInfo
- Publication number
- CN203729908U CN203729908U CN201420113559.0U CN201420113559U CN203729908U CN 203729908 U CN203729908 U CN 203729908U CN 201420113559 U CN201420113559 U CN 201420113559U CN 203729908 U CN203729908 U CN 203729908U
- Authority
- CN
- China
- Prior art keywords
- centralizer
- stay
- fixed muffle
- union joint
- righting
- 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.)
- Expired - Lifetime
Links
- 239000000725 suspension Substances 0.000 claims abstract description 8
- 210000002445 nipple Anatomy 0.000 claims description 19
- 230000004308 accommodation Effects 0.000 claims description 9
- 230000015572 biosynthetic process Effects 0.000 claims description 4
- 238000012360 testing method Methods 0.000 abstract description 37
- 238000000034 method Methods 0.000 description 5
- 229910000831 Steel Inorganic materials 0.000 description 4
- 238000010276 construction Methods 0.000 description 4
- 239000010959 steel Substances 0.000 description 4
- 238000011161 development Methods 0.000 description 2
- 238000005553 drilling Methods 0.000 description 2
- 238000012544 monitoring process Methods 0.000 description 2
- 238000012546 transfer Methods 0.000 description 2
- 241001269238 Data Species 0.000 description 1
- 230000003044 adaptive effect Effects 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 238000009530 blood pressure measurement Methods 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Landscapes
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
The utility model relates to a centralizer comprising a centralizing body, an upper connector and a lower connector; the upper and lower connectors are arranged at the upper and lower ends of the centralizing body respectively. The upper end of the upper connector is provided with a suspension connection structure to be used with a suspension tool; the lower end of the upper connector is provided with an instrument connection structure used for mounting a test instrument at the center. The centralizing body is provided with inside accommodating space used for accommodating the test instrument; the centralizing body is further provided with elastic centralizing braces peripherally arranged at intervals; the elastic centralizing braces extend vertically, the middle of every elastic centralizing brace arches out, and accordingly the outline of the centralizing body is in the shape with large middle radial size and small end radial sizes. During tripping in and out for entry test, the centralizer can well centralize the test instrument; the centralizer with the test instrument can smoothly pass a sloping segment and a reducing segment of an underground casing, normal testing is ensured, jamming of the test instrument is avoided, and the test instrument is well protected.
Description
Technical field
The utility model belongs to oil field equipment technical field, is specifically related to a kind of centralizer.
Background technology
Gas well on stream, in order to obtain the creation datas such as flow in well, pressure, temperature, need to use steel wire for logging or cable suspension tester equipment to put it in the oil pipe of gas well, and rely on instrument own wt or plant and instrument to carry power plant and instrument is sent to shaft bottom, measure thereby realize gas well creation data.Current most of gas well test is all taking plant and instrument weight as power, control instrument is sent to shaft bottom by ground, this test jobs mode is all to rely on pulling force and the speed of induction steel wire or cable to judge the situation of instrument in gas well, cannot judge truth in gas well, be therefore easy to occur tester stuck, cannot on put the phenomenon of putting; In the time of the directional well of the large gradient of test, due to tester and pipe friction resistance greatly and the impact of drilling well deflecting, easily occur instrument transfer be obstructed or on while carrying because instrument eccentric card is in situations such as tubing couplings.Therefore need to design a kind of testing tool centralizer, for changing tester righting according to pipe aperture, reduce the stuck risk that causes falling well of tester.
The existing centralizer for oily oil-gas field development of domestic market, maximum is to be intended for the operations such as drilling well, formation testing, gas testing operation, also have input and the fishing of some centralizers for small-sized object in oil pipe, such as a centralizer of fishing for for oil pumping rod centering device, down-hole catching device, these centralizer diameters are much larger than the diameter that enters well testing tool, once on carry instrument and run into oil pipe reducing, be easy to stuck in oil pipe, cause the stuck or well that falls of instrument, press test if apply to the stream of high yield gas, be easy on instrument the top build-up of pressure meter well that falls.
The test of gas well pressure and temp is the most frequently used dynamic monitoring means of gas field development process, a medium-sized gas field is carried out every year monitoring construction and is reached hundreds of and even thousands of inferior, therefore used centralizer cannot be used in test jobs at all, particularly directional well test and flowline test.
Utility model content
The purpose of this utility model is to provide and a kind ofly can be applicable to downhole testing operation, and can change tester righting, reduce the centralizer of stuck tester risk according to pipe aperture.
For achieving the above object, the utility model adopts following technical scheme: a kind of centralizer, comprise that centralizer body and correspondence are arranged on the upper of the upper and lower two ends of centralizer body, lower union joint, the upper end of described upper binding head have for the supporting suspention syndeton of suspension attachment, lower end has the instrument syndeton for tester being arranged on to centre, in described centralizer body, have for the spatial accommodation that holds tester, centralizer body has along the elasticity righting stay that circumferentially lay at interval, downward-extension on elasticity righting stay, the body profile formation middle part radial dimension that the centralizer of sening as an envoy to is radially outward encircleed at middle part is large, the shape that two ends radial dimension is little.
Described lower union joint is jacket casing structure, and the spatial accommodation in centralizer body is communicated with the trepanning of this jacket casing.
Described suspention syndeton is double-screw bolt, and described instrument syndeton is screwed hole.
Described centralizer body is combined by described each elasticity righting stay, and the upper end of each elasticity righting stay is connected to the periphery of the instrument syndeton of upper binding head, and lower end is connected on lower union joint.
Described elasticity righting stay is arc, and the two ends of the bent body of elasticity righting stay are outwards converted into straightway and form landing nipple, and the outer end points place of straightway again outward forms hooked end.
The upper end of described centralizer body is connected on upper binding head by upper fixed muffle, upper fixed muffle is removable to be set on upper binding head, on the interface coordinating with upper binding head at upper fixed muffle inner sleeve face, be provided with for the locating groove of putting into elasticity righting stay upper end landing nipple, the hooked end of described elasticity righting stay upper end landing nipple is pressed in use fixed muffle and is arranged between the stopping surface down at upper binding head middle part.
Outside the middle part of described lower union joint, be arranged with lower fixed muffle, the upper end of lower union joint is provided with the gear edge, location coordinating with lower fixed muffle block, and lower fixed muffle is compressed by the clamping sleeve being screwedly mounted on lower union joint at its lower end spiral; The lower end landing nipple of each elasticity righting stay be positioned over respectively on lower fixed muffle inner core face and or lower union joint outer surface in the corresponding locating groove of offering, the hooked end of described elasticity righting stay lower end landing nipple is pressed between clamping sleeve and lower fixed muffle lower surface.
Centralizer of the present utility model, when for downhole testing, is arranged on the tester tool string connecting in the instrument syndeton of upper binding head, then can enter well test jobs after centralizer is connected with suspension attachment.In the spatial accommodation of tester in centralizer body, and centralizer body has middle part and outwards encircles the elasticity righting stay, make the overall profile of centralizer form diametrically in the middle of tripe large, the shape that two is little, when pipe aperture diminishes, when centralizer body is subject to radial compression, the inwardly elastic shrinkage distortion of elasticity righting stay, make centralizer axial dimension automatically elongated, radial contour size diminishes automatically, like this enter well surveying examination transfer and on carry in process, centralizer has not only played good centralizing function to tester, and centralizer can be smoothly by inclination pipeline section and reducing pipeline section with tester tool string, guarantee normally carrying out of test jobs, avoid the generation of stuck tester phenomenon, and protect well tester.
Brief description of the drawings
Fig. 1 is the stereogram of a kind of embodiment of the utility model;
Fig. 2 is a kind of structural representation of upper binding head part in Fig. 1;
Fig. 3 is a kind of structural representation of lower union joint part in Fig. 1;
Fig. 4 is the another kind of structural representation of upper binding head part in Fig. 1;
Fig. 5 is the another kind of structural representation of lower union joint part in Fig. 1.
Detailed description of the invention
The embodiment of centralizer of the present utility model is shown in shown in Fig. 1-Fig. 3, upper binding head 1 and lower union joint 4 that this centralizer comprises centralizer body and is oppositely arranged up and down, the upper/lower terminal of centralizer body is connected respectively on upper and lower connector, in centralizer body, have for holding the tester spatial accommodation of (or being called testing tool string), wherein, upper binding head 1 has cylindrical body, the center of this body upper end be provided with for the supporting suspention syndeton of suspension attachment, the center of body lower surface is provided with the instrument syndeton for connecting test instrument.Lower union joint 4 is the jacket casing structures that two ends are penetrating, the internal diameter of jacket casing than the large 8-9mm of tester so that testing tool string can be therefrom by entering into the spatial accommodation in centralizer body; Certainly, if the length of testing tool string is not long, lower union joint 4 also can be set as solid construction, now needn't limit the size of the spatial accommodation in centralizer body, only otherwise affect the installation of testing tool string and work.Centralizer body is surrounded by the circumferential elasticity righting stay 3 uniformly at intervals in many edges, and its quantity can be selected according to actual needs, for example, can be three, four or more, and its material is elastic steel sheet or has flexible steel wire bar; Elasticity righting stay 3 extends along the vertical direction and is on the whole arc, its interlude is that bent body, the two ends of radially outward embowment are landing nipple, the landing nipple at two ends is outwards converted into straightway by the two ends of bending low and forms, in order to ensure that stay is reliably connected with upper and lower connector, by the outer end points place of stay two ends straightway outward formation hooked end 20 again, in the time that stay 3 is connected with upper and lower connector, can utilize hooked end 20 that stay is positioned in radial orientation like this, prevent that stay 3 is to both sides beat; The upper end landing nipple of each elasticity righting stay 3 is connected on the correspondence position of instrument syndeton periphery of upper binding head 1, lower end landing nipple is connected to lower connection, on 4 correspondence position, bent body part is between upper and lower connector, the radial dimension of the body profile of the centralizer forming is like this that middle part is large, small in ends, the part that centralizer body is surrounded by each elasticity righting stay is hollow, and its inner space is larger, is convenient to hold tester.
In the present embodiment, the instrument syndeton on upper binding head 1 be opened on described body lower surface with the supporting screwed hole 9 of corresponding tester; Suspention syndeton is integrated the connecting stud 8 that the diameter being arranged on described body upper surface is less than body radial dimension, now, and supporting being provided with for coordinate six sides or the cubic dismounting force section that screw with spanner on body; Be set with fixed muffle 2 in the periphery of body bottom, also be provided with stopping surface 7 down at the middle part of body, this stopping surface 7 can directly be formed by the lower surface of described dismounting force section, also can radial flange be set on body in addition, be formed by the lower surface of radial flange; Offer the locating groove corresponding with each elasticity righting stay 3 at upper binding head 1 for overlapping on the side surface of the part of loading onto fixed muffle, the upper end landing nipple of each elasticity righting stay lays respectively in this correspondence locating groove, the hooked end 20 of this end is between upper fixed muffle 2 and described stopping surface 7, such as pressure measurement in the time that test is used, the electronic pressure gauge battery sleeve the adopting elasticity righting stay 3 of holding out, withstand upper fixed muffle 2 by righting stay again, make fixed muffle 2 and stopping surface 7 clamp hooked end 20.The upper end of the jacket casing external surface of lower union joint 4 has radially outward outstanding location to keep off along 10, there is external screw thread lower end, outside jacket casing, be arranged with lower fixed muffle 5, the internal diameter of lower fixed muffle is than the large 3-4mm of the external diameter of jacket casing corresponding part, lower fixed muffle 5 is pressed in described location by clamping sleeve 6 tops that are screwed in jacket casing lower end and keeps off along on 10, on the outer surface of lower union joint 4, offer the locating groove corresponding with each elasticity righting stay 3, the lower end landing nipple of each elasticity righting stay lays respectively in corresponding locating groove, the hooked end 20 of this end is in use pressed between lower fixed muffle 5 and clamping sleeve 6.
In the present embodiment, upper fixed muffle 2 is that sleeve coordinates with upper binding head 1, utilize tester radially to support swollen righting stay, righting stay struts the hooked end that promotes to move on upper fixed muffle and withstand all the time fixed muffle 2 and make it to clamp righting stay, this assembly manipulation process is very simple, and righting stay is reliable with being connected of upper binding head.Certainly, this clamping connects the mode that also can adopt other, and for example, upper fixed muffle adopts the sheathed bottom that is assemblied in upper binding head of thread connecting mode, by tightening upper fixed muffle, the hooked end of righting stay is pressed on described stopping surface.
The assembling process of the present embodiment and the operating process in pressure and temp test jobs are as follows: first the lower end landing nipple of each elasticity righting stay 3 is put into the each locating groove on lower union joint 4, then the lower fixed muffle 5 of cover, be screwed clamping sleeve 6, and then the other end of each elasticity righting stay 3 is put into upper fixed muffle 2, again fixed muffle 2 is enclosed within on upper binding head, the upper end landing nipple that makes each stay 3 is one by one in the each locating groove on upper binding head, and so far centralizer integrated connection is complete.This centralizer is applicable to various test jobs and salvages and throw in operation, in the time being applied to pressure and temp test, first successively pressure gauge and battery sleeve and weighted lever are connected to form to testing tool string, then from lower union joint, upwards pass the screwed hole that enters into the spatial accommodation of centralizer body and be connected to upper binding head lower end, tighten with spanner, complete being connected of testing tool string and centralizer; Finally by upper binding head 1 with enter rope for drawing water from a well cap and be connected, can enter well and carry out test jobs.Certainly, aforementioned assembling sequence and step are not unique, also can be by order assembling from top to bottom, testing tool string is assembled and is carried out before with lower union joint with being also placed on elasticity righting stay being connected of upper binding head 1, just can be not specifically limited like this for the structure of lower union joint 4.
In other embodiment of the present utility model, instrument syndeton and overhung construction also can adopt other corresponding supporting types of attachment, such as clamping form, lock pin type of attachment etc., as long as upper binding head lower end can be connected with corresponding tester, upper end can be connected with corresponding suspension attachment.On the inner core face that also can corresponding be opened in upper and lower fixed muffle for placing the locating groove of elasticity righting stay landing nipple of offering on upper and lower connector, see shown in Fig. 4, Fig. 5.In addition, the upper fixed muffle that is enclosed within upper binding head lower end can also adopt that radial screw and upper binding head are removable to be fixedly connected with.
In other embodiment of the present utility model, each elasticity righting stay of centralizer body also can be adopted the mode being screwed and be connected with upper and lower connector.In addition, centralizer body can also adopt overall structure, the elasticity righting stay being separately positioned on corresponding connecting ring by upper and lower two connecting rings and two ends forms, now centralizer body is connected with upper and lower connector by connecting ring, the form of its connection can adopt be threaded or clamping all can, the corresponding construction on upper and lower connector does adaptive change.The arc bent body part of elasticity righting stay also can adopt middle part radially outward outstanding v-shaped structure substitute.
Claims (7)
1. a centralizer, it is characterized in that: comprise that centralizer body and correspondence are arranged on the upper of the upper and lower two ends of centralizer body, lower union joint, the upper end of described upper binding head have for the supporting suspention syndeton of suspension attachment, lower end has the instrument syndeton for tester being arranged on to centre, in described centralizer body, have for the spatial accommodation that holds tester, centralizer body has along the elasticity righting stay that circumferentially lay at interval, downward-extension on elasticity righting stay, the body profile formation middle part radial dimension that the centralizer of sening as an envoy to is radially outward encircleed at middle part is large, the shape that two ends radial dimension is little.
2. centralizer according to claim 1, is characterized in that: described lower union joint is jacket casing structure, and the spatial accommodation in centralizer body is communicated with the trepanning of this jacket casing.
3. centralizer according to claim 1, is characterized in that: described suspention syndeton is double-screw bolt, and described instrument syndeton is screwed hole.
4. according to the centralizer described in claim 1 or 2 or 3, it is characterized in that: described centralizer body is combined by described each elasticity righting stay, the upper end of each elasticity righting stay is connected to the periphery of the instrument syndeton of upper binding head, and lower end is connected on lower union joint.
5. centralizer according to claim 4, is characterized in that: described elasticity righting stay is arc, and the two ends of the bent body of elasticity righting stay are outwards converted into straightway and form landing nipple, and the outer end points place of straightway again outward forms hooked end.
6. centralizer according to claim 5, it is characterized in that: the upper end of described centralizer body is connected on upper binding head by upper fixed muffle, upper fixed muffle is removable to be set on upper binding head, on the interface coordinating with upper binding head at upper fixed muffle inner sleeve face, be provided with for the locating groove of putting into elasticity righting stay upper end landing nipple, the hooked end of described elasticity righting stay upper end landing nipple is pressed in use fixed muffle and is arranged between the stopping surface down at upper binding head middle part.
7. centralizer according to claim 5, it is characterized in that: outside the middle part of described lower union joint, be arranged with lower fixed muffle, the upper end of lower union joint is provided with the gear edge, location coordinating with lower fixed muffle block, and lower fixed muffle is compressed by the clamping sleeve being screwedly mounted on lower union joint at its lower end spiral; The lower end landing nipple of each elasticity righting stay be positioned over respectively on lower fixed muffle inner core face and or lower union joint outer surface in the corresponding locating groove of offering, the hooked end of described elasticity righting stay lower end landing nipple is pressed between clamping sleeve and lower fixed muffle lower surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420113559.0U CN203729908U (en) | 2014-03-13 | 2014-03-13 | Centralizer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420113559.0U CN203729908U (en) | 2014-03-13 | 2014-03-13 | Centralizer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203729908U true CN203729908U (en) | 2014-07-23 |
Family
ID=51199988
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420113559.0U Expired - Lifetime CN203729908U (en) | 2014-03-13 | 2014-03-13 | Centralizer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203729908U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112983338A (en) * | 2021-02-07 | 2021-06-18 | 宁夏振盐鑫盛通工贸有限公司 | Environment-friendly vacuum protection device for oil well operation |
-
2014
- 2014-03-13 CN CN201420113559.0U patent/CN203729908U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112983338A (en) * | 2021-02-07 | 2021-06-18 | 宁夏振盐鑫盛通工贸有限公司 | Environment-friendly vacuum protection device for oil well operation |
| CN112983338B (en) * | 2021-02-07 | 2022-08-02 | 宁夏振盐鑫盛通工贸有限公司 | Environment-friendly vacuum protection device for oil well operation |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140723 |