CN203879409U - Drilling rod capable of reducing friction and pressure and removing cuttings bed - Google Patents
Drilling rod capable of reducing friction and pressure and removing cuttings bed Download PDFInfo
- Publication number
- CN203879409U CN203879409U CN201420205612.XU CN201420205612U CN203879409U CN 203879409 U CN203879409 U CN 203879409U CN 201420205612 U CN201420205612 U CN 201420205612U CN 203879409 U CN203879409 U CN 203879409U
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- China
- Prior art keywords
- drilling rod
- spiral channel
- rod body
- cutting bed
- drilling
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Abstract
The utility model relates to a drilling rod in the technical field of oil and gas field drilling, in particular to a drilling rod capable of reducing friction and pressure and removing a cuttings bed. The drilling rod comprises a drilling rod body, a female screwed joint and a male screwed joint, wherein the female screwed joint and the male screwed joint are arranged at the two ends of the drilling rod body, and a first spiral channel, a bearing type protective jacket and a second spiral channel are arranged on the surface of the drilling rod body in sequence. When the drilling rod is used, the contact area of the drilling rod body and a well wall (or a casing pipe) is reduced, friction force and torque are effectively reduced, the drilling rod can be centralized, drilling stem bending is avoided, the spiral channels are protected against abrasion and are additionally arranged, the rock carrying capability of annulus fluid is enhanced through the channel structure, and the occurrence probability of the cuttings bed is reduced.
Description
Technical field
The utility model relates to the drilling rod of oilfield drilling technical field, and particularly a kind of antifriction step-down is except cutting bed drilling rod.
Background technology
Creep in process at high angle hole and horizontal well, due to the effect of gravity, drilling rod is always against the borehole wall (or sleeve pipe), its contact area is just much larger than straight well, the frictional force producing and moment of torsion will increase greatly, in addition shaft bottom exists cutting bed conventionally, not only can increase frictional resistance, affect the pressure of the drill and apply and hole trajectory control quality, and can cause multiple borehole problems, even cause the generation of the serious accident such as Underwell leakage, bit freezing, can affect especially cementing quality, even affect the Oil/gas Well life-span.
Utility model content
The purpose of this utility model is to provide a kind of antifriction step-down except cutting bed drilling rod; mainly solve the existing technical problem of above-mentioned prior art; when use, reduce the contact area of drilling rod body and the borehole wall (or sleeve pipe); effectively reduce frictional force and moment of torsion; there is centralizing function to avoid the generation of Tubing Buckling to drilling rod, and protected the wearing and tearing of spiral channel.Increase spiral channel, utilize the large rock-carrying ability of channel structure enhancing annular fluid, reduce the occurrence probability of cutting bed.
For achieving the above object, the technical solution of the utility model is:
A kind of antifriction step-down is except cutting bed drilling rod; it comprises drilling rod body and is arranged on box thread joint and the male thread joint at drilling rod body two ends, it is characterized in that: described drilling rod body surface is provided with the first spiral channel, bearing-type protective sleeve and the second spiral channel successively.
Described antifriction step-down, except cutting bed drilling rod, is characterized in that: the groove top diameter of described spiral channel is not more than box thread joint and male thread joint external diameter, and the groover rot diameter of spiral channel is more than or equal to this body diameter of drilling rod.
Described antifriction step-down, except cutting bed drilling rod, is characterized in that: described bearing-type protective sleeve external diameter is greater than the groove top diameter of spiral channel; Described bearing-type protective sleeve is installed between two spiral channels on groove.
Described antifriction step-down, except cutting bed drilling rod, is characterized in that: the helicla flute of described spiral channel is 1-5 circle.
Described antifriction step-down, except cutting bed drilling rod, is characterized in that: the combining structure that described the first spiral channel, bearing-type protective sleeve, the second spiral channel form arranges 1-5 place on drilling rod body.
The utlity model has following advantage:
1, the utility model increases spiral channel on the surface of drilling rod, utilize channel structure can change the movement locus of ring empty flow field and the vortex characteristics of generation, to control the flow field characteristic of annular fluid, strengthen the large rock-carrying ability of annular fluid, reduce the occurrence probability of cutting bed.
2, the utility model increases bearing-type protective sleeve on the surface of drilling rod, utilizes bearing-type protective sleeve to reduce frictional force and the moment of torsion of drilling rod and the borehole wall (or sleeve pipe), reduces the generation of the well challenge causing thus.
Brief description of the drawings
Fig. 1 is structural representation of the present utility model.
Fig. 2 is that the utility model middle (center) bearing formula protective sleeve is installed on two structural representations between spiral channel.
Detailed description of the invention
As shown in Figure 1, 2, the utility model discloses a kind of antifriction step-down except cutting bed drilling rod.As shown in the figure: it comprises drilling rod body 1 and the box thread joint 2 and the male thread joint 3 that are arranged on drilling rod body 1 two ends, and described drilling rod body 1 surface is provided with the first spiral channel 4, bearing-type protective sleeve 5 and the second spiral channel 6 successively.
As preferred structure, the groove top diameter of described spiral channel 4,6 is not more than box thread joint 2 and male thread joint 3 external diameters, and the groover rot diameter of spiral channel 4,6 is greater than drilling rod body 1 external diameter.
As preferred structure, described bearing-type protective sleeve 5 external diameters are greater than the groove top diameter of spiral channel 4,6; Described bearing-type protective sleeve 5 is installed between two spiral channels 4,6 on groove.
The helicla flute of described spiral channel 4,6 is 1-5 circle, and as preferred structure, helicla flute is no less than 3 circles.
The combining structure that described spiral channel 4, bearing-type protective sleeve 5, spiral channel 6 form can arrange 1-5 place at drilling rod body 1.
When the utility model uses, spiral channel can play stirring circulation of drilling fluid, forms turbulent flow, and spiral channel can " be caught " landwaste in cutting bed and be got rid of to the high edge direction of well, drilling fluid can be taken away landwaste smoothly, plays the effect that reduces cutting bed of cleaning.Bearing-type protective sleeve external diameter is greater than the groove top diameter of spiral channel; reduce the contact area of drilling rod body and the borehole wall (or sleeve pipe); effectively reduce frictional force and moment of torsion, have centralizing function to avoid the generation of Tubing Buckling to drilling rod, and protected the wearing and tearing of spiral channel.Bearing-type protective sleeve can be changed, and changes simple and convenient.
Be only preferred embodiment of the present utility model in sum, be not used for limiting practical range of the present utility model.Be that all equivalences of doing according to the content of the utility model claim change and modify, all should be technology category of the present utility model.
Claims (5)
1. an antifriction step-down is except cutting bed drilling rod; it comprises drilling rod body (1) and is arranged on box thread joint (2) and the male thread joint (3) at drilling rod body (1) two ends, it is characterized in that: described drilling rod body (1) surface is provided with the first spiral channel (4), bearing-type protective sleeve (5) and the second spiral channel (6) successively.
2. antifriction step-down according to claim 1 is except cutting bed drilling rod, it is characterized in that: the groove top diameter of described spiral channel (4,6) is not more than box thread joint (2) and male thread joint (3) external diameter, and the groover rot diameter of spiral channel (4,6) is more than or equal to drilling rod body (1) external diameter.
3. antifriction step-down according to claim 1 and 2, except cutting bed drilling rod, is characterized in that: described bearing-type protective sleeve (5) external diameter is greater than the groove top diameter of spiral channel (4,6); Described bearing-type protective sleeve (5) is installed between two spiral channels (4,6) on groove.
4. antifriction step-down according to claim 1, except cutting bed drilling rod, is characterized in that: the helicla flute of described spiral channel (4,6) is 1-5 circle.
5. antifriction step-down according to claim 1, except cutting bed drilling rod, is characterized in that: the combining structure that described the first spiral channel (4), bearing-type protective sleeve (5), the second spiral channel (6) form arranges 1-5 place on drilling rod body (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420205612.XU CN203879409U (en) | 2014-04-25 | 2014-04-25 | Drilling rod capable of reducing friction and pressure and removing cuttings bed |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420205612.XU CN203879409U (en) | 2014-04-25 | 2014-04-25 | Drilling rod capable of reducing friction and pressure and removing cuttings bed |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203879409U true CN203879409U (en) | 2014-10-15 |
Family
ID=51679921
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420205612.XU Expired - Fee Related CN203879409U (en) | 2014-04-25 | 2014-04-25 | Drilling rod capable of reducing friction and pressure and removing cuttings bed |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203879409U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103924932A (en) * | 2014-04-25 | 2014-07-16 | 上海海隆石油钻具有限公司 | Drill rod capable of reducing friction and pressure and removing rock debris |
| CN109931013A (en) * | 2019-05-04 | 2019-06-25 | 东北石油大学 | Heavy weight drill pipe with wellbore cleaning action |
-
2014
- 2014-04-25 CN CN201420205612.XU patent/CN203879409U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103924932A (en) * | 2014-04-25 | 2014-07-16 | 上海海隆石油钻具有限公司 | Drill rod capable of reducing friction and pressure and removing rock debris |
| CN109931013A (en) * | 2019-05-04 | 2019-06-25 | 东北石油大学 | Heavy weight drill pipe with wellbore cleaning action |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20141015 Termination date: 20170425 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |