CN203531785U - Centralizer using liquid to assist in cleaning cuttings bed - Google Patents

Centralizer using liquid to assist in cleaning cuttings bed Download PDF

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Publication number
CN203531785U
CN203531785U CN201320648216.XU CN201320648216U CN203531785U CN 203531785 U CN203531785 U CN 203531785U CN 201320648216 U CN201320648216 U CN 201320648216U CN 203531785 U CN203531785 U CN 203531785U
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CN
China
Prior art keywords
centralizer
utilizes
auxiliary cutting
liquid
liquid according
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 - Fee Related
Application number
CN201320648216.XU
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Chinese (zh)
Inventor
董学成
熊继有
薛成岗
谭军
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CHENGDU LITE ENERGY TECHNOLOGY Co Ltd
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CHENGDU LITE ENERGY TECHNOLOGY Co Ltd
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Priority to CN201320648216.XU priority Critical patent/CN203531785U/en
Application granted granted Critical
Publication of CN203531785U publication Critical patent/CN203531785U/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

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Abstract

The utility model discloses a centralizer using liquid to assist in cleaning a cuttings bed. The centralizer using liquid to assist in cleaning the cuttings bed comprises a centralizer body, at least two centralizing blocks, hard alloy columns, a spiral flow guiding groove and a flow distributing pipe, wherein connectors are arranged at the two ends of the centralizer body, the centralizing blocks are fixedly arranged on the surface of the centralizer body and extend spirally along the surface of the centralizer body, the hard alloy column is fixedly arranged on the surfaces of the centralizing blocks, the spiral flow guiding groove is formed between the centralizing blocks, water holes are formed in the spiral flow guiding groove, rotational flow side nozzles are installed in the water holes, and the flow distributing pipe is arranged in a through hole inside the centralizer body and is communicated with the rotational flow side nozzles. When the centralizer using liquid to assist in cleaning the cuttings bed is used for drilling a large-displacement well, a large-inclination well and a horizontal well, the centralizer can serve as an ordinary centralizer, the cuttings bed can be cleaned efficiently, the occurrence rate of underground complicated conditions and underground accidents is greatly reduced, and the extension capacity of the large-displacement well, the large-inclination well and the horizontal well is improved.

Description

A kind of centralizer that utilizes the auxiliary Cutting Disposal of liquid
Technical field
The utility model relates to the instrument of Cutting Disposal in a kind of drilling engineering, particularly, relates to the centralizer that utilizes the auxiliary Cutting Disposal of liquid.
Background technology
In extended reach well, high angle hole and horizontal well drilling operation process, because eccentric annulus, the borehole wall are coarse, drill string shoulder etc. hinders for how much, and under the effect of landwaste self gravitation, landwaste is very easily deposited on the low limit of pit shaft of horizontal segment and inclination section, form cutting bed.The formation of cutting bed has strengthened the frictional force of drilling tool and the borehole wall, has reduced the extension ability of extended reach well, high angle hole and horizontal well, even causes the generation of down hole problem and down-hole accident, affects normally carrying out of drillng operation.
At present the Main Means of Cutting Disposal is that guiding gutter by spiral or V-type changes annular space drilling well working solution flow field, makes its generation be conducive to the turbulent flow of disturbance cutting bed, thereby the landwaste of cutting bed is come back in the body that backflows, carries out well head.
Notification number is CN2516687Y, the day for announcing is that the Chinese patent on October 16th, 2002 discloses a kind of well drilling detritus agitator, it be one with the cylinder of through hole, its termination headband pin thread, the other end is box, this agitator bore wall is continuous circular arc, straight line, parabolic shape, and ectosome is with helical wing plate, between the difference of agitator external diameter and borehole wall internal diameter is 10-35 millimeters.Notification number is CN202039794U, the Chinese patent in November 16 2011 day for announcing discloses a kind of high efficiency cleaning drill rod for rock cuttings bed, it comprises drilling rod body and the pin thread and the box that are arranged on drilling rod body two ends, and drilling rod body surface is equipped with spiral channel structure.The turbulent flow that above-mentioned two patent utilization screw type guiding gutters produce carries out cutting bed removing operation.
Notification number is CN2685542Y, the Chinese patent in March 16 2005 day for announcing provides a kind of drill stem type cutting bed cleanout tool for oil, geological drilling down-hole Cutting Disposal, comprise a tool body with through hole, its upper and lower side is processed with screw thread, tool body middle part Excircle machining has 3,4,5,6 V shape centering edges, between V-arrangement centering edge, be processed with V-shaped flow road, between centering edge upper and lower two ends afterbody and body, be smoothly connected and be processed into arc groove and.Notification number is CN202673184U, the Chinese patent of on 01 16th, 2013 day for announcing, a kind of vortex centralizer of the Cutting Disposal for drilling process is provided, this device comprises body, body is respectively equipped with top connection and lower contact up and down, and body is provided with righting band, is provided with the turbulent runner of " V " type between righting band, righting band side is provided with wear-resistant strip and studs with hard alloy wear resistance sheet, and on body, the external diameter of righting band is greater than drill pipe coupling external diameter.Publication No. is CN102913155A, and the Chinese patent of date of publication 2013.02.06 provides a kind of cutting bed remover, and it comprises the cylindric body of hollow, and the two ends up and down of body are respectively equipped with upper and lower joint, are provided with V-shaped groove (4) in body (1).Above-mentioned three patents are that the turbulent flow, the eddy flow that utilize V-type guiding gutter to produce carry out cutting bed removing operation.
Above five patents are all to adopt to produce passively turbulent mode cutting bed is removed, and depend on to a great extent the size of annular velocity, and in eccentric annulus, the uneven distribution of flow velocity can not guarantee the mode effect of this Cutting Disposal.
Utility model content
The purpose of this utility model is to overcome above-mentioned technological deficiency, particularly, for the currently used problem that produces passively turbulent Cutting Disposal mode poor effect, provide a kind of centralizer of rotating jet to the auxiliary Cutting Disposal of the liquid of the active percussion of cutting bed that utilize.
Adopt the utility model to carry out extended reach well, high angle hole and Horizontal Well Drilling well operations, can not only play the effect of general centralizer, also cutting bed has been carried out to efficient removing, greatly reduce the generation of down hole problem and down-hole accident, promoted the extension ability of extended reach well, high angle hole and horizontal well simultaneously.
To achieve these goals, the technical scheme that the utility model adopts is:
A centralizer that utilizes the auxiliary Cutting Disposal of liquid, comprising:
Centralizer body, these centralizer body two ends are provided with joint;
At least two wiper blocks that are fixedly arranged on centralizer body surface, this wiper block extends spirally along described centralizer body surface;
Hard alloy columnar, it is fixedly arranged on described wiper block surface;
Spiral stream guidance groove, it is formed between described wiper block, in spiral stream guidance groove, is provided with hydrophthalmia, and eddy flow side nozzle is installed in hydrophthalmia;
Isocon, it is located in the through hole of described centralizer body inside, and this isocon is communicated with described eddy flow side nozzle.
Preferably, the lead angle of described wiper block is 18 ° ~ 30 °.
Preferably, 1 ~ 12 of hydrophthalmia number is spiral formula and is uniformly distributed in spiral stream guidance groove.
Preferably, two-phase borders on the river near the eyes to angle 30 ° ~ 180 °, and hydrophthalmia extends upward opposite direction angle≤90 ° that direction and drill bit creep into.
Preferably, 0 ° ~ 10 ° of eddy flow side nozzle setting angles, and opposite direction angle≤90 ° of creeping into drill bit.Described setting angle is the angle on eddy flow side nozzle and centralizer body surface.
Preferably, described isocon is provided with at least one tap hole.
Preferably, the external diameter of described centralizer is greater than drill pipe coupling external diameter, is less than drilling well hole diameter.
The beneficial effects of the utility model are: when drilling well working solution enters centralizer body, by 1 ~ 4 tap hole on isocon by the flow shunt to 1 of 5% ~ 20% left and right ~ 12 eddy flow side nozzle, utilize the active percussion of the liquid energy of rotating jet to cutting bed, make cutting bed disturbance, the landwaste settling down is again pushed in the body that backflows and carries out well head, strengthen the Cutting Disposal effect of screw type guiding gutter.
The mode combining with accompanying drawing below by embodiment, is described in further detail foregoing of the present utility model, but the following example should be interpreted as to the utility model is only confined to these specific embodiments in the scope of above-mentioned theme.Be the content of all support the utility model claims do etc. little variation all should be technology category of the present utility model with modifying.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model;
Fig. 2 is generalized section of the present utility model,
In figure: 1-centralizer body, 2-wiper block, 3-spiral stream guidance groove, 4-hard alloy columnar, 5-hydrophthalmia, 6-eddy flow side nozzle, 7-top connection, 8-lower contact, 9-isocon, 10-tap hole.
The specific embodiment
As shown in Figure 1-2, a kind of centralizer that utilizes the auxiliary Cutting Disposal of liquid described in the utility model, is comprised of centralizer body (1), wiper block (2), spiral stream guidance groove (3), hard alloy columnar (4), hydrophthalmia (5), eddy flow side nozzle (6), top connection (7), lower contact (8) and isocon (9) etc.
Centralizer body (1) two ends are top connection (7) and lower contact (8), the wiper block (2) extending spirally is installed on body, on wiper block (2), be inlaid with hard alloy columnar (4), between wiper block (2), be provided with spiral stream guidance groove (3), in spiral stream guidance groove (3), be provided with hydrophthalmia (5), the eddy flow side nozzle (6) that size matches is installed in hydrophthalmia (5), in eddy flow side nozzle (6), connect isocon (9), isocon (9) is arranged in the middle through hole of centralizer body (1).Isocon (9) is provided with at least one tap hole (10).
During use, isocon (9) is by the flow shunt to 1 of 5% ~ 20% left and right ~ 12 eddy flow side nozzle (6), circumferentially the eddy flow side nozzle (6) of screw arrangement carries out active impact to cutting bed, make cutting bed disturbance, the landwaste settling down is again pushed in the body that backflows and carries out well head, strengthen the Cutting Disposal effect of screw type guiding gutter, simultaneously circumferentially the eddy flow side nozzle (6) of screw arrangement can not only be in office where position is impacted cutting bed, do not need to adjust orientation, the annular space area of passage that simultaneously circumferentially eddy flow side nozzle (6) setting angle of screw arrangement and drilling method diminish with guiding gutter to angle≤90 °, accelerated the flow velocity of the body that backflows on annular space, contribute to the landwaste of disturbance to take away out rapidly well head, reach Cutting Disposal, wellbore clearance, reduce backing pressure, promote extended reach well, the object of the extension ability of high angle hole and horizontal well.
The utility model can be connected to the serious well section in any position, particularly cutting bed in drill string, and in well drilling pipe column, connects a plurality of the utility model.
The above, it is only preferred embodiment of the present utility model, not the utility model is done to any pro forma restriction, although the utility model discloses as above with preferred embodiment, yet not in order to limit the utility model, any those skilled in the art, do not departing within the scope of technical solutions of the utility model, when can utilizing the technology contents of above-mentioned announcement to make a little change or being modified to the equivalent embodiment of equivalent variations, in every case be not depart from technical solutions of the utility model content, any simple modification of above embodiment being done according to technical spirit of the present utility model, equivalent variations and modification, all still belong in the scope of technical solutions of the utility model.

Claims (7)

1. a centralizer that utilizes the auxiliary Cutting Disposal of liquid, is characterized in that comprising:
Centralizer body, these centralizer body two ends are provided with joint;
At least two wiper blocks that are fixedly arranged on centralizer body surface, this wiper block extends spirally along described centralizer body surface;
Hard alloy columnar, it is fixedly arranged on described wiper block surface;
Spiral stream guidance groove, it is formed between described wiper block, in spiral stream guidance groove, is provided with hydrophthalmia, and eddy flow side nozzle is installed in hydrophthalmia;
Isocon, it is located in the through hole of described centralizer body inside, and this isocon is communicated with described eddy flow side nozzle.
2. a kind of centralizer that utilizes the auxiliary Cutting Disposal of liquid according to claim 1, is characterized in that, the lead angle of described wiper block is 18 ° ~ 30 °.
3. a kind of centralizer that utilizes the auxiliary Cutting Disposal of liquid according to claim 1, is characterized in that 1 ~ 12 of hydrophthalmia number is spiral formula and is uniformly distributed in spiral stream guidance groove.
4. a kind of centralizer that utilizes the auxiliary Cutting Disposal of liquid according to claim 3, is characterized in that, two-phase borders on the river near the eyes to angle 30 ° ~ 180 °, and hydrophthalmia extends upward opposite direction angle≤90 ° that direction and drill bit creep into.
5. a kind of centralizer that utilizes the auxiliary Cutting Disposal of liquid according to claim 1, is characterized in that, 0 ° ~ 10 ° of eddy flow side nozzle setting angles, and opposite direction angle≤90 ° of creeping into drill bit.
6. a kind of centralizer that utilizes the auxiliary Cutting Disposal of liquid according to claim 1, is characterized in that, described isocon is provided with at least one tap hole.
7. a kind of centralizer that utilizes the auxiliary Cutting Disposal of liquid according to claim 1, is characterized in that, the external diameter of described centralizer is greater than drill pipe coupling external diameter, is less than drilling well hole diameter.
CN201320648216.XU 2013-10-21 2013-10-21 Centralizer using liquid to assist in cleaning cuttings bed Expired - Fee Related CN203531785U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201320648216.XU CN203531785U (en) 2013-10-21 2013-10-21 Centralizer using liquid to assist in cleaning cuttings bed

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201320648216.XU CN203531785U (en) 2013-10-21 2013-10-21 Centralizer using liquid to assist in cleaning cuttings bed

Publications (1)

Publication Number Publication Date
CN203531785U true CN203531785U (en) 2014-04-09

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104141464A (en) * 2014-07-28 2014-11-12 东北石油大学 Horizontal well cleaning tool
CN105178872A (en) * 2015-09-09 2015-12-23 长江大学 Mechanical auxiliary device used for improving bit pressure
CN105715209A (en) * 2016-03-17 2016-06-29 长江大学 Device for decreasing torque and increasing pressure by jetting method

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104141464A (en) * 2014-07-28 2014-11-12 东北石油大学 Horizontal well cleaning tool
CN104141464B (en) * 2014-07-28 2016-06-22 东北石油大学 Horizontal well borehole cleaning tool
CN105178872A (en) * 2015-09-09 2015-12-23 长江大学 Mechanical auxiliary device used for improving bit pressure
CN105715209A (en) * 2016-03-17 2016-06-29 长江大学 Device for decreasing torque and increasing pressure by jetting method

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GR01 Patent grant
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20140409

Termination date: 20171021

CF01 Termination of patent right due to non-payment of annual fee