CN205117234U - Drilling tool reaming centralizer in pit - Google Patents
Drilling tool reaming centralizer in pit Download PDFInfo
- Publication number
- CN205117234U CN205117234U CN201520620992.8U CN201520620992U CN205117234U CN 205117234 U CN205117234 U CN 205117234U CN 201520620992 U CN201520620992 U CN 201520620992U CN 205117234 U CN205117234 U CN 205117234U
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- centralizer
- wing
- reaming
- drilling tool
- spiral
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Abstract
The utility model discloses a drilling tool reaming centralizer in pit, including centralizer body (1) with be provided last neck (2) and down neck (3) at the upper and lower both ends of centralizer body respectively, centralizer body outer wall is provided with a plurality of spirals and sets upright or straight the wing (4), adjacent spiral is set upright or straight and is formed body runner (5) between the wing, the wing was set upright or straight to the spiral crown and the upper and lower helicoid department of intersecting follow the spiral and set upright or straight wing extending direction and be equipped with 5 at least PDC combined machining teeth (four to six -tenehs). The utility model discloses reduced under the high temperature and high pressure environment the high proportion of the mud limited risk that results in the clean problem of well and non - target zone and target zone silt particle intermediate layer easily to suppress the moment of torsion of discharge capacity of running the drilling tool into the well into, through increasing PDC combined machining tooth cloth tooth density, the fluid passage area is returned out in the increase, and the circumstances of lifting the drilling tool with when falling the reaming when avoiding creeping into, but also can be in the normal drilling operation in -process operation of falling the reaming at any time keeps the smoothness and the toughness of the wall of a well, the reduction wall of a well necking down probability that subsides.
Description
Technical field
The utility model belongs to the technical field of drilling well, is specifically related to a kind of down-hole equipment reaming centralizer.
Background technology
In oilfield drilling, centralizer is the important component part of bottom drill tool structure, point action is played in drilling assembly, in increasing hole angle drilling assembly and dropping assembly, by changing the position of centralizer in bottomhole assembly, the stress of bottomhole assembly can be changed, reach the object controlling well track.Simultaneously it can keep hole diameter and the borehole wall smooth, reduce the borehole wall to the wearing and tearing of drilling tool.In order to keep borehole size, wellbore stability and deflecting needs, need during drillng operation to connect centralizer on drilling tool.
When a few km drilling tool works in well, normal because of the reason such as hole shrinkage, distortion, cause drilling tool cannot be freely movable, appearance can not the phenomenon of put-on and delegated or rotation, this is also the most common in drillng operation, the most incident down hole problem, cause drilling well claim for eot, strengthen operating cost, even engineering accident occurs.Therefore, in conventional drilling process, need back reaming operation, in order to keep wellbore stability, well track is level and smooth.
Traditional drilling tool back reaming centralizer because of back reaming tooth Density Distribution limited, during back reaming operation to the borehole wall finishing limited in one's ability, easily cause talus deposit in centralizer upper end.In addition, because the slurry channel area outside centralizer is little, when suppressing pump, easily lift drilling tool, and then affect back reaming operation.The operation of existing centralizer back reaming causes down-hole accident, gently then bit freezing, and heavy then drilling tool falls well, and well landfill, easily causes equipment damage and economic loss.
Above-mentioned discussion content object be to reader introduce may to below by the various aspects of technology relevant for the various aspects of the present utility model be described and/or advocate, believe that this discussion content contributes to for reader with background's information, to be conducive to understanding various aspects of the present utility model better, therefore, should be appreciated that it is discuss to read these with this angle, instead of admit prior art.
Utility model content
The purpose of this utility model is avoid deficiency of the prior art and provide a kind of down-hole equipment reaming centralizer, and its structure is simple, and dependable performance, can reduce borehole wall step, makes hole diameter more smooth, and can repeatedly use.
The purpose of this utility model is achieved through the following technical solutions:
A kind of down-hole equipment reaming centralizer is provided, comprise centralizer body and be separately positioned on the upper neck of centralizer body upper/lower terminal and lower neck, described centralizer body outer wall is provided with some the spiral righting wings, form body runner between the adjacent spiral righting wing, at least five PDC combined cut teeth are equipped with along spiral righting wing bearing of trend in the bizet of the described spiral righting wing and upper and lower helicoid intersection.
Wherein, described upper neck axial length is 30-40cm, and described lower neck axial length is 30-40cm, and described spiral righting wing axial length is 60-70cm.
Wherein, the described spiral righting wing is 4.
Wherein, the described spiral righting wing is enclosed right hand helix structure, and spiral angle is 48-55 °.
Wherein, the long 60-70cm of bizet, the wide 10-20cm of the described spiral righting wing.
The beneficial effects of the utility model:
1), PDC combined cut tooth in the upper and lower both sides of spiral righting wing bizet, can go up draw a finishing borehole wall also can the lower stroke of finishing borehole wall.
2), the spiral righting wing adopts enclosed right hand helix structure, and four righting wing structures are more stable relative to three righting wing structures, can more times number finishing borehole wall under same case under rotating speed in the unit interval.
3) this utility model instrument righting wing adopts long narrow structure, has both increased waterpower runner and has turn increased borehole wall finishing contact area.
Accompanying drawing explanation
The utility model is described in further detail to utilize accompanying drawing, but the embodiment in accompanying drawing does not form any restriction of the present utility model, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to the following drawings.
Fig. 1 is the structural representation of down-hole equipment reaming centralizer.
Fig. 2 is the cross-sectional view of down-hole equipment reaming centralizer.
Detailed description of the invention
The technical solution of the utility model is understood better in order to make those skilled in the art, below in conjunction with the drawings and specific embodiments, the utility model is described in further detail, it should be noted that, when not conflicting, the feature in the embodiment of the application and embodiment can combine mutually.
As depicted in figs. 1 and 2, down-hole equipment reaming centralizer described in the utility model, comprise centralizer body 1 and be separately positioned on the upper neck 2 of centralizer body 1 upper/lower terminal and lower neck 3, the length of described centralizer body 1 is 60-70cm, described upper neck 2 axial length is 30-40cm, and described lower neck 3 axial length is 30-40cm.Described centralizer body 1 outer wall is provided with some the spiral righting wings 4, forms body runner 5 between the adjacent spiral righting wing 4.The described spiral righting wing 4 is 4, and 4 righting wing structures are more stable relative to 3 righting wing structures, can repair borehole wall by more times number, realize well level and smooth in the unit interval under rotating speed under same case.The described spiral righting wing 4 is enclosed right hand helix structure, and spiral angle is 48-55 °.Described spiral righting wing axial length is 60-70cm, the long 60-70cm of bizet, the wide 10-20cm of the described spiral righting wing 4.The described spiral righting wing 4 is long narrow structure, correspondingly can strengthen the cross section of body runner 5, greatly reduces talus deposit in reaming process and causes the generation of suppressing pump, suppressing moment of torsion.The bizet of the described spiral righting wing 4 and upper and lower helicoid intersection are inlayed along the spiral righting wing 4 bearing of trend and at least 5 PDC combined cut teeth 6 are housed, PDC combined cut tooth adopts large density, even proper alignment mode layout, strength of spraining when down-hole rotates is less, greatly reduce mill resistance, ensure downhole safety.
The utility model not only can solve problem and the drawback of back reaming in conventional back reaming centralizer drilling process, also reduce under high temperature and high pressure environment and creep into the limited risk causing well cleaning problems and non-object layer and target zone silt particle interlayer easily to suppress moment of torsion of discharge capacity under mud high specific gravity, by increasing PDC combined cut tooth cutter set density, increase returning fluid's body aisle spare, when avoiding creeping into and back reaming time lift the situation of drilling tool, but also in normal drilling operability process, back reaming operation can be carried out at any time, keep the smooth and toughness of the borehole wall, reduce borehole wall necking down to subside probability, ensure the safety of drillng operation, save drillng operation cost.
Set forth a lot of detail in description above so that fully understand the utility model, but the utility model can also adopt other to be different from other modes described here and implement, and therefore, can not be interpreted as the restriction to the utility model protection domain.
In a word; although the utility model illustrates above-mentioned preferred embodiment; but should illustrate; although those skilled in the art can carry out various change and remodeling; unless such change and remodeling deviate from scope of the present utility model, otherwise all should be included in protection domain of the present utility model.
Claims (3)
1. a down-hole equipment reaming centralizer, it is characterized in that: comprise centralizer body (1) and be separately positioned on centralizer body (1), the upper neck (2) at lower two ends and lower neck (3), described upper neck (2) axial length is 30-40cm, described lower neck (3) axial length is 30-40cm, described centralizer body (1) outer wall is provided with some the spiral righting wings (4), described spiral righting wing axial length is 60-70cm, the described spiral righting wing (4) is 4, body runner (5) is formed between the adjacent spiral righting wing (4), the bizet of the described spiral righting wing (4) and upper, at least five PDC combined cut teeth (6) are equipped with along the spiral righting wing (4) bearing of trend in lower helicoid intersection.
2. down-hole equipment reaming centralizer according to claim 1, is characterized in that: the described spiral righting wing (4) is enclosed right hand helix structure, and spiral angle is 48-55 °.
3. down-hole equipment reaming centralizer according to claim 1 and 2, is characterized in that: the long 60-70cm of bizet, the wide 10-20cm of the described spiral righting wing (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520620992.8U CN205117234U (en) | 2015-08-17 | 2015-08-17 | Drilling tool reaming centralizer in pit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520620992.8U CN205117234U (en) | 2015-08-17 | 2015-08-17 | Drilling tool reaming centralizer in pit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205117234U true CN205117234U (en) | 2016-03-30 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520620992.8U Active CN205117234U (en) | 2015-08-17 | 2015-08-17 | Drilling tool reaming centralizer in pit |
Country Status (1)
| Country | Link |
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| CN (1) | CN205117234U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107100557A (en) * | 2017-06-15 | 2017-08-29 | 贵州省地质矿产勘查开发局111地质大队 | Spiral wing centralizer for air down-the-hole hammer |
| CN108505943A (en) * | 2018-06-04 | 2018-09-07 | 中石化石油工程技术服务有限公司 | A kind of drilling well reaming reaming hole device |
| CN108533180A (en) * | 2018-04-24 | 2018-09-14 | 中国海洋石油集团有限公司 | A kind of drilling engineering is with boring hole-drawing device and reaming method |
| CN108625809A (en) * | 2018-06-08 | 2018-10-09 | 沧州格锐特钻头有限公司 | A kind of stabilizer for repairing the borehole wall with brill |
-
2015
- 2015-08-17 CN CN201520620992.8U patent/CN205117234U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107100557A (en) * | 2017-06-15 | 2017-08-29 | 贵州省地质矿产勘查开发局111地质大队 | Spiral wing centralizer for air down-the-hole hammer |
| CN108533180A (en) * | 2018-04-24 | 2018-09-14 | 中国海洋石油集团有限公司 | A kind of drilling engineering is with boring hole-drawing device and reaming method |
| CN108505943A (en) * | 2018-06-04 | 2018-09-07 | 中石化石油工程技术服务有限公司 | A kind of drilling well reaming reaming hole device |
| CN108505943B (en) * | 2018-06-04 | 2023-09-08 | 中石化石油工程技术服务有限公司 | Drilling reaming device |
| CN108625809A (en) * | 2018-06-08 | 2018-10-09 | 沧州格锐特钻头有限公司 | A kind of stabilizer for repairing the borehole wall with brill |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address |
Address after: 100010 Chaoyangmen North Street, Dongcheng District, Dongcheng District, Beijing Co-patentee after: CNOOC (China) Limited Zhanjiang Branch Patentee after: China Offshore Oil Group Co., Ltd. Address before: 100000 China oil tower, 25 Chaoyangmen North Street, Chaoyang District, Beijing Co-patentee before: CNOOC (China) Limited Zhanjiang Branch Patentee before: China National Offshore Oil Corporation |
|
| CP03 | Change of name, title or address |