CN203022641U - Non-magnetic pressure-bearing drilling stem - Google Patents
Non-magnetic pressure-bearing drilling stem Download PDFInfo
- Publication number
- CN203022641U CN203022641U CN 201220623791 CN201220623791U CN203022641U CN 203022641 U CN203022641 U CN 203022641U CN 201220623791 CN201220623791 CN 201220623791 CN 201220623791 U CN201220623791 U CN 201220623791U CN 203022641 U CN203022641 U CN 203022641U
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- China
- Prior art keywords
- magnetic pressure
- stem
- drilling rod
- magnetic
- bearing drilling
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Abstract
The utility model discloses a non-magnetic pressure-bearing drilling stem. The non-magnetic pressure-bearing drilling stem comprises a pipe body and stem heads. An upper stem head is an inner threaded connector and a lower stem head is an outer threaded head. The non-magnetic pressure-bearing drilling stem is characterized in that the outer diameter of the pipe body is smaller than the outer diameter of the stem heads, middle thickening segments are installed on the pipe body at intervals, structural strength of the pipe body is enhanced, the pipe body utilizes low-carbon high chromium manganese alloy steel as materials, and the pipe body has low magnetic conductivity and high strength mechanical property. The non-magnetic pressure-bearing drilling stem can bear tension load, bears compressive load and has good rigidity. The structure of the non-magnetic pressure-bearing drilling stem reduces stress concentration and effectively reduces contact area of the drilling stem and a well wall and reduces wear rate of the outer diameter. The low-carbon high chromium manganese alloy steel has good low magnetic conductivity, good intercrystalline corrosion resistance and good abrasive resistance. A magnetic measurement instrument cannot be affected by drilling tool magnetic field, and accuracy of data is guaranteed.
Description
Technical field
The utility model relates to a kind of rig drilling rod used, relates in particular to a kind of without magnetic pressure-bearing drilling rod.
Background technology
In rig exploitation, the pressure of the drill is by the formation of drill string weight, so drill string bottom compression chord.When creeping into, general suffered the pressure of the drill numerical value is all greater than the pressure bar stabilization threshold of drill string, thereby the drill string of bottom part in compression will bend under Gravitative Loads.Crooked drill string will cause alternating stresses when rotated, cause drill string fatigue to destroy.In order to reduce the degree of fatigue failure, should reduce flexural stress, this just requires to increase the rigidity of pressurized section as far as possible.And drill string is expendable part, and in recovery process, the wearing and tearing of drilling rod are very fast, needs to change timely.The normal drill collar that uses adopts thick-walled seamless steel pipes to make at present, have larger gravity and rigidity, but cost is too high.And common drilling rod used, tube wall is thinner, and cost is lower, but rigidity is inadequate, holds and can't stand compressive load.
The utility model content
The technical assignment of technical problem to be solved in the utility model and proposition is that prior art is improved, and provides a kind of without magnetic pressure-bearing drilling rod, solves the problem that in present technology, the drilling rod tube wall is thin, rigidity is inadequate, and saves production cost.
For solving above technical problem, the technical solution of the utility model is as follows:
A kind of without magnetic pressure-bearing drilling rod, comprise body and bar head, the upper bar head is female adapter, and the lower pole head is male connection, it is characterized in that, and the body external diameter has the thick section, middle part at body at interval of a segment length less than bar head external diameter, increases the structural strength of body.
Further, the pipe thickness of thick section, described middle part is 2 ~ 3 times of body wall thickness.
Further, thick section, described middle part is evenly distributed with two sections or three sections on body.
Further, it is the high chromansil steel of low-carbon (LC) that described body adopts material, has low magnetic permeability and high-strength mechanical performance.
Further, the head of described male connection is tapered, and conical outer surface has screw thread, adopts the moulding of numerical control programming time processing.
Further, there is the conical internal thread with the male connection coupling described female adapter inside, and the threaded engagement by female adapter and male connection between some drilling rods is connected from beginning to end.
Compared with prior art, the utility model advantage is:
Wall thickness without magnetic pressure-bearing drilling rod described in the utility model can bear tensile load between drilling rod and drill collar, also allow to bear compressive load, has good rigidity; Concentrating of stress reduced in its structure tap, body and thick section, middle part, effectively reduces the wear rate of drilling rod and borehole wall contact area and external diameter; Adopt simultaneously the high Chromador alloy of a kind of low-carbon (LC) to make, reach its mechanical performance through refining after strict chemical analysis proportioning by forging, and have good low magnetic permeability and fabulous intergranular decay resistance and abrasion resistance, can make to have fluxgate or the Magnetic Measurement instrument is not subjected to the impact in drilling tool magnetic field, guarantee that instrument data is accurate.
Description of drawings
Fig. 1 is structural representation of the present utility model;
Fig. 2 is another kind of structural representation of the present utility model.
The specific embodiment
Below in conjunction with the accompanying drawing in the utility model embodiment, the technical scheme in the utility model embodiment is clearly and completely described, obviously, described embodiment is only the utility model part embodiment, rather than whole embodiment.Based on the embodiment in the utility model, those of ordinary skills are not making the every other embodiment that obtains under the creative work prerequisite, all belong to the scope of the utility model protection.
The utility model embodiment is disclosed a kind of without magnetic pressure-bearing drilling rod, take the rigidity that increases drilling rod and save cost as purpose.
Referring to Fig. 1, a kind of without magnetic pressure-bearing drilling rod, comprise body 2 and bar head, the upper bar head is female adapter 1, and the lower pole head is male connection 4, it is characterized in that, the body external diameter has middle part thick section 3 at body at interval of a segment length less than bar head external diameter, increases the structural strength of body.The pipe thickness of thick section 3, middle part is 2 ~ 3 times of body 2 wall thickness.Thick section 3, middle part is evenly distributed with two sections on body 2.
It is the high chromansil steel of low-carbon (LC) that body 2 adopts material, reach its mechanical performance through refining after strict chemical analysis proportioning by forging, and have good low magnetic permeability and fabulous intergranular decay resistance and abrasion resistance, can make to have fluxgate or the Magnetic Measurement instrument is not subjected to the impact in drilling tool magnetic field.
The head of male connection 4 is tapered, and conical outer surface has screw thread, adopts the moulding of numerical control programming time processing.There is the conical internal thread with male connection 4 couplings female adapter 1 inside.
Referring to Fig. 2, thick section, middle part 3 is evenly distributed with three sections on body 2, strengthens the structural strength of body.Reduce concentrating of stress, effectively reduce the wear rate of drilling rod and borehole wall contact area and external diameter.
During use, at first adopt some drill rod assemblies to connect into the drilling rod of Len req, drilling rod one end that connects to form is male connection 4, the other end is female adapter 1, female adapter 1 is assemblied on rig, male connection 4 connects drill bit, then starts rig, and rig drives drilling rod and drill bit rotates.
Be below only preferred embodiment of the present utility model, should be pointed out that above-mentioned preferred embodiment should not be considered as restriction of the present utility model, protection domain of the present utility model should be as the criterion with the claim limited range.For those skilled in the art, within not breaking away from spirit and scope of the present utility model, can also make some improvements and modifications, these improvements and modifications also should be considered as protection domain of the present utility model.
Claims (6)
1. one kind without magnetic pressure-bearing drilling rod, comprise body (2) and bar head, the upper bar head is female adapter (1), the lower pole head is male connection (4), it is characterized in that, the body external diameter has middle part thick section (3) at body (2) at interval of a segment length less than bar head external diameter, increases the structural strength of body.
2. according to claim 1ly it is characterized in that without magnetic pressure-bearing drilling rod, the pipe thickness of thick section, described middle part (3) is 2 ~ 3 times of body (2) wall thickness.
3. according to claim 2ly it is characterized in that without magnetic pressure-bearing drilling rod, thick section, described middle part (3) is evenly distributed with two sections or three sections on body (2).
4. according to claim 3ly it is characterized in that without magnetic pressure-bearing drilling rod, it is the high chromansil steel of low-carbon (LC) that described body (2) adopts material, has low magnetic permeability and high-strength mechanical performance.
5. according to claim 4ly it is characterized in that without magnetic pressure-bearing drilling rod, the head of described male connection (4) is tapered, and conical outer surface has screw thread, adopts the moulding of numerical control programming time processing.
6. according to claim 5 without magnetic pressure-bearing drilling rod, it is characterized in that, there is the conical internal thread with male connection (4) coupling described female adapter (1) inside, is connected from beginning to end by the threaded engagement of female adapter (1) with male connection (4) between drilling rod.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220623791 CN203022641U (en) | 2012-11-22 | 2012-11-22 | Non-magnetic pressure-bearing drilling stem |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220623791 CN203022641U (en) | 2012-11-22 | 2012-11-22 | Non-magnetic pressure-bearing drilling stem |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203022641U true CN203022641U (en) | 2013-06-26 |
Family
ID=48646632
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220623791 Expired - Fee Related CN203022641U (en) | 2012-11-22 | 2012-11-22 | Non-magnetic pressure-bearing drilling stem |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203022641U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105041230A (en) * | 2015-09-07 | 2015-11-11 | 山西风雷钻具有限公司 | Non-magnetic pressure bearing drill stem with wear-resistant belts |
| CN108374641A (en) * | 2018-03-29 | 2018-08-07 | 钱煜坤 | For the anti-sticking short circuit drilling rod of guiding of medium-length hole drilling machine and for the drilling rod group of medium-length hole drilling machine |
| CN108643844A (en) * | 2018-04-13 | 2018-10-12 | 河南中原特钢装备制造有限公司 | Superlong array square kelly and processing method |
-
2012
- 2012-11-22 CN CN 201220623791 patent/CN203022641U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105041230A (en) * | 2015-09-07 | 2015-11-11 | 山西风雷钻具有限公司 | Non-magnetic pressure bearing drill stem with wear-resistant belts |
| CN108374641A (en) * | 2018-03-29 | 2018-08-07 | 钱煜坤 | For the anti-sticking short circuit drilling rod of guiding of medium-length hole drilling machine and for the drilling rod group of medium-length hole drilling machine |
| CN108374641B (en) * | 2018-03-29 | 2020-07-07 | 钱煜坤 | Guiding anti-blocking short-circuit drill rod for medium-length hole drilling machine and drill rod group for medium-length hole drilling machine |
| CN108643844A (en) * | 2018-04-13 | 2018-10-12 | 河南中原特钢装备制造有限公司 | Superlong array square kelly and processing method |
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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: 20130626 Termination date: 20161122 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |