CN202914090U - Insulation nipples for electromagnetic wave measurement while drilling system - Google Patents
Insulation nipples for electromagnetic wave measurement while drilling system Download PDFInfo
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- CN202914090U CN202914090U CN201220560131.1U CN201220560131U CN202914090U CN 202914090 U CN202914090 U CN 202914090U CN 201220560131 U CN201220560131 U CN 201220560131U CN 202914090 U CN202914090 U CN 202914090U
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- pipe nipple
- main body
- short section
- nipple
- tooth form
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Abstract
The utility model discloses insulation nipples for an electromagnetic wave measurement while drilling system. The insulation nipples for the electromagnetic wave measurement while drilling system comprise a first connection nipple, a first transition nipple, a main body nipple, a second transition nipple and a second connection nipple, wherein the first connection nipple, the first transition nipple, the main body nipple, the second transition nipple and the second connection nipple are connected in sequence. A connection thread form connected with the main body nipple and the first transition nipple, a connection thread form connected with the main body nipple and the second transition nipple, a connection thread form connected with the first transition nipple and the first connection nipple and a connection thread form connected with the second transition nipple and the second connection nipple are non-standard special thread forms. A connection thread form, used for connecting with a first drill stem, of the first connection nipple and a connection thread form, used for connecting with a second drill stem, of the second connection nipple are standard thread forms of the American petroleum institute. The insulation nipples for the electromagnetic wave measurement while drilling system are simple in structure and large in mechanical strength. Mechanical properties of the thread forms adopted in the insulation nipples are identical with mechanical properties of the same types of the American petroleum institute and value of insulation resistance can reach more than 30 M Omega.
Description
Technical field
The utility model belongs to the petroleum drilling and mining field, particularly a kind of insulating short section for the electromagnetic wave while-drilling measuring system.
Background technology
In the oil/gas drilling operation, the communication that need to survey the shaft bottom is to ground, and existing transmission technology method has: mud-pressure pulses mode, electromagnetic wave, sound wave, intelligent drilling rod etc.Drilling liquid pressure pulse wave signal transmission means is general, practical, the most reliable most widely used method in the present mud drilling liquid drillng operation.But since air drilling occurring last century, because its many-sided advantage, in the development of international petroleum drilling market rapidly, be used widely in the global range, the electromagnetic wave while-drilling measuring technique that is applicable to gas drilling has also obtained very large development.
About MWD(Measure While Drilling, measurement while drilling) and LWD(Logging While Drilling, with boring well logging) the electromagnetic transmission technology, for now, it is the most effective a kind of technology of real-time Transmission downhole data in gas drilling.Its transmission principle is: in drill string, to disconnect near the drill collar of drill bit, access the insulating short section of being made by insulation materials at gap, whole like this drill string has just become the two poles of the earth of electric dipole transmitting antenna, thereby the information after the emission modulation, information is to transmit in the mode of weak current, and this electric current passes to ground by the conduction on the stratum at well place, at the ground receiving demodulation.
Existing insulating short section weakens the intensity of connecting thread so greatly by the size of cutting down connecting thread or the function that reaches the lower drill insulation at screw thread processing groove; Also have that to be at cross sectional shape that leg-of-mutton thread surface is carried out ceramic coated, thereby and be coated in insulation drill string above the pottery with epoxy material, but since the pottery of the sharp corner of thread crest when connecting thread, be easy to grind off, thereby lost the ability of insulation.There is baroque shortcoming in the insulating short section that also has.
The utility model content
The purpose of this utility model is the defective for above-mentioned prior art, provide a kind of simple in structure, mechanical strength is large is used for the insulating short section of electromagnetic wave while-drilling measuring system.
The technical scheme taked of the utility model is to achieve these goals:
A kind of insulating short section for the electromagnetic wave while-drilling measuring system, comprise the first connecting short section that connects successively, the First Transition pipe nipple, the main body pipe nipple, the second transition pipe nipple and the second connecting short section, the joint screw thread tooth form that described main body pipe nipple is connected with the First Transition pipe nipple, the joint screw thread tooth form that described main body pipe nipple is connected with the second transition pipe nipple, the joint screw thread tooth form that described First Transition pipe nipple is connected with the first connecting short section, the joint screw thread tooth form that described the second transition pipe nipple is connected with the second connecting short section is nonstandard special thread tooth form, and described the first connecting short section is for the joint screw thread tooth form that is connected with the first drill string, the joint screw thread tooth form that the second connecting short section is used for being connected with the second drill string is american petroleum institute standard's form of thread; The thread height of described nonstandard special thread tooth form is 5.330-5.335mm, and tapering is 1:5-7, and pitch is 6.33-6.37mm, and the tooth form angle is 28-32 °.
The thread height of described nonstandard special thread tooth form is 5.333mm, and tapering is that 1:6, pitch are that 6.35mm, tooth form angle are 30 °.
Described main body pipe nipple comprises plural the first main body pipe nipple, and the joint screw thread tooth form between each first main body pipe nipple is nonstandard special thread tooth form.
Described main body pipe nipple is 3 the first main body pipe nipples that link to each other successively.
Described main body pipe nipple inner surface is provided with insulation material layer.
Described main body pipe nipple external surface is provided with the insulation material layer of textile fabric.
Described main body pipe nipple external surface is provided with the ceramic ring insulating layer.
The material of described First Transition pipe nipple and/or main body pipe nipple and/or the second transition pipe nipple is high-intensity titanium alloy.
Male and female button thread surface and circular bead surface that described main body pipe nipple is connected with the First Transition pipe nipple are provided with insulating layer, male and female button thread surface and circular bead surface that described main body pipe nipple is connected with the second transition pipe nipple are provided with insulating layer, box thread surface and circular bead surface that described First Transition pipe nipple is connected with the first connecting short section are provided with insulating layer, and box thread surface and circular bead surface that described the second transition pipe nipple is connected with the second connecting short section are provided with insulating layer.
The beneficial effect of the technical scheme that the utility model embodiment provides is:
1) insulating short section of the present utility model is simple in structure, mechanical strength is large.
2) mechanical property and the API(American Petroleum Institute of the special thread tooth form that adopts of insulating short section of the present utility model) mechanical property of same specification is equal to.
3) insulation resistance value of the utility model insulating short section can reach 30M Ω above (megger of 1000V is measured).
Description of drawings
In order to be illustrated more clearly in the technical scheme of the utility model embodiment, the below will do one to the accompanying drawing that uses among the embodiment and introduce simply, apparently, below listed accompanying drawing only be embodiment more of the present utility model, for those of ordinary skills, under the prerequisite of not paying creative work, can also obtain according to these accompanying drawings other accompanying drawing.
Fig. 1 is the structural representation of a kind of insulating short section of providing of the utility model embodiment;
Fig. 2 is the structural representation of the another kind of insulating short section that provides of the utility model embodiment;
Fig. 3 is the structural representation that use in the insulating short section well site that provides of the utility model embodiment;
Fig. 4 is the nonstandard special thread tooth form structural representation that the utility model embodiment provides;
Fig. 5 is american petroleum institute standard's form of thread structural representation that the utility model embodiment provides.
In the accompanying drawing, the component list of each label representative is as follows:
1. the first drill string;
2. insulating short section, 21. first connecting short sections, 22. First Transition pipe nipples, 23. main body pipe nipples, 24. insulation material layers, the insulation material layer of 25. textile fabrics, 26. second transition pipe nipples, 27. second connecting short sections, 28. ceramic ring insulating layers, 230 first main body pipe nipples;
3. the second drill string;
4. reception antenna;
5. electric current.
The specific embodiment
For making the purpose of this utility model, technical scheme and advantage clearer, below in conjunction with accompanying drawing the utility model embodiment is described in further detail.
Referring to Fig. 1 and Fig. 3, Fig. 4 and Fig. 5, a kind of insulating short section for the electromagnetic wave while-drilling measuring system, comprise the first connecting short section 21 that connects successively, First Transition pipe nipple 22, main body pipe nipple 23, the second transition pipe nipple 26 and the second connecting short section 27, the joint screw thread tooth form that main body pipe nipple 23 is connected with First Transition pipe nipple 22, the joint screw thread tooth form that main body pipe nipple 23 is connected with the second transition pipe nipple 26, the joint screw thread tooth form that First Transition pipe nipple 22 is connected with the first connecting short section 21, the joint screw thread tooth form that the second transition pipe nipple 26 is connected with the second connecting short section 27 is nonstandard special thread tooth form, and the first connecting short section 21 is for the joint screw thread tooth form that is connected with the first drill string 1, the joint screw thread tooth form that the second connecting short section 27 is used for being connected with the second drill string 3 is american petroleum institute standard's form of thread.Wherein, the thread height of described nonstandard special thread tooth form is 5.330-5.335mm, and tapering is 1:5-7, and pitch is 6.33-6.37mm, and the tooth form angle is 28-32 °.As preferably, the thread height of nonstandard special thread tooth form is 5.333mm, and tapering is that 1:6, pitch are that 6.35mm, tooth form angle are 30 °.
Referring to Fig. 3,2 of insulating short sections are located thereon the first drill string 1 of face and the second following drill string 3 couples together; Drill string 1 and 3 is exactly to have formed the EM-MWD(electromagnetic wave while-drilling to measure like this) the two poles of the earth of system electric dipole transmitting antenna, the information that the shaft bottom records is launched after ovennodulation and with electric current 5 forms, this electric current 5 passes to ground through the conduction of well formation drilling, and received antenna 4 receives and detects, and acquires the information in shaft bottom after the demodulation.Insulating short section of the present utility model is simple in structure, and mechanical strength is large.
Referring to Fig. 1 and Fig. 2, the present embodiment is on the basis of above-described embodiment, and main body pipe nipple 23 comprises plural the first main body pipe nipple 230, and the joint screw thread tooth form between each first main body pipe nipple 230 is nonstandard special thread tooth form.Preferred main body pipe nipple 23 is 3 the first main body pipe nipples 230 that link to each other successively.
In order to increase the resistance of insulating short section, whole insulating short section is divided into several joints in order to increase the insulating surfaces of screw thread.The utility model can reach more than the 30M Ω with the resistance of the insulating short section that the 1000V megger records, and satisfies the instructions for use of shaft bottom low-voltage far away.The mechanical property of calculating proof screw thread of the present utility model is equal to the mechanical property of API specification of the same race, and the insulating layer of thread surface is difficult for grinding off when button.
Referring to Fig. 1, the present embodiment is on the basis of above-described embodiment, and main body pipe nipple 23 inner surfaces are provided with insulation material layer 24.Main body pipe nipple 23 external surfaces embed the insulation material layer 25 of high performance textile fabric.
Referring to Fig. 2, the present embodiment is on the basis of above-described embodiment, and main body pipe nipple 23 inner surfaces are provided with insulation material layer 24.Main body pipe nipple 23 external surface adhesion ceramic ring insulating layers 28.
As preferably, the material of First Transition pipe nipple 22 and/or main body pipe nipple 23 and/or the second transition pipe nipple 26 is high-intensity titanium alloy.
The external diameter of transition pipe nipple and main body pipe nipple is less than the drill collar external diameter in the same drill string, endoporus is large, such poor than normal drill string of the mechanical property of insulating short section, so adopt high-intensity titanium alloy material, make its mechanical property be equal to the mechanical property of other drill collars in the same drill string.
Referring to Fig. 1 and Fig. 2, as preferably, the public affairs that main body pipe nipple 23 is connected with First Transition pipe nipple 22, box thread surface and circular bead surface are provided with insulating layer, the public affairs that main body pipe nipple 23 is connected with the second transition pipe nipple 26, box thread surface and circular bead surface are provided with insulating layer, First Transition pipe nipple 22 is connected 21 box thread surface and circular bead surface and is provided with insulating layer with the first connecting short section, the second transition pipe nipple 26 is provided with insulating layer with box thread surface and circular bead surface that the second connecting short section 27 is connected, namely in Fig. 1 and Fig. 2, the public affairs of insulating surfaces II, box thread surface and circular bead surface carry out surface insulation layer to be processed, another insulating surfaces III only box thread surface and circular bead surface carries out surface insulation layer and processes, and namely applies insulation material layer on the surface.
Insulating short section in the utility model EM-MWD system adopts high-intensity titanium alloy material, satisfy same specification drill collar mechanical property, screw thread adopts the special thread tooth form, carry out some insulation processing in thread surface, because thread surface does not have wedge angle, so when connecting thread, the coating of thread surface is not easy to be worn away, to clash into, thereby can guarantee the insulating properties of pipe nipple.Endoporus at pipe nipple is coated with one deck and the bonding firmly high performance insulation materials of metal surface structure simultaneously; External surface at pipe nipple also is coated with this high performance insulation materials, in order to increase its intensity, a kind of high performance textile fabric is embedded in this insulation coating; Or bonding at the joint shoulder place of the joint overcoat ceramic ring this insulation materials that reinjects.Like this, insulating short section fully cuts off drill string becomes up and down two conductors.The utlity model has advantage simple in structure, that mechanical strength is large.
The above only is preferred embodiment of the present utility model, and is in order to limit the utility model, not all within spirit of the present utility model and principle, any modification of doing, is equal to replacement, improvement etc., all should be included within the protection domain of the present utility model.
Claims (9)
1. insulating short section that is used for the electromagnetic wave while-drilling measuring system, it is characterized in that, comprise the first connecting short section that connects successively, the First Transition pipe nipple, the main body pipe nipple, the second transition pipe nipple and the second connecting short section, the joint screw thread tooth form that described main body pipe nipple is connected with the First Transition pipe nipple, the joint screw thread tooth form that described main body pipe nipple is connected with the second transition pipe nipple, the joint screw thread tooth form that described First Transition pipe nipple is connected with the first connecting short section, the joint screw thread tooth form that described the second transition pipe nipple is connected with the second connecting short section is nonstandard special thread tooth form, and described the first connecting short section is for the joint screw thread tooth form that is connected with the first drill string, the joint screw thread tooth form that the second connecting short section is used for being connected with the second drill string is american petroleum institute standard's form of thread; The thread height of described nonstandard special thread tooth form is 5.330-5.335mm, and tapering is 1:5-7, and pitch is 6.33-6.37mm, and the tooth form angle is 28-32 °.
2. the insulating short section for the electromagnetic wave while-drilling measuring system according to claim 1 is characterized in that, the thread height of described nonstandard special thread tooth form is 5.333mm, and tapering is 1:6, and pitch is 6.35mm, and the tooth form angle is 30 °.
3. the insulating short section for the electromagnetic wave while-drilling measuring system according to claim 1, it is characterized in that, described main body pipe nipple comprises plural the first main body pipe nipple, and the joint screw thread tooth form between each first main body pipe nipple is nonstandard special thread tooth form.
4. the insulating short section for the electromagnetic wave while-drilling measuring system according to claim 3 is characterized in that, described main body pipe nipple is 3 the first main body pipe nipples that link to each other successively.
5. the insulating short section for the electromagnetic wave while-drilling measuring system according to claim 1 is characterized in that, described main body pipe nipple inner surface is provided with insulation material layer.
6. the insulating short section for the electromagnetic wave while-drilling measuring system according to claim 5 is characterized in that, described main body pipe nipple external surface is provided with the insulation material layer of textile fabric.
7. the insulating short section for the electromagnetic wave while-drilling measuring system according to claim 5 is characterized in that, described main body pipe nipple external surface is provided with the ceramic ring insulating layer.
8. the insulating short section for the electromagnetic wave while-drilling measuring system according to claim 1 is characterized in that, the material of described First Transition pipe nipple and/or main body pipe nipple and/or the second transition pipe nipple is high-intensity titanium alloy.
9. each described insulating short section for the electromagnetic wave while-drilling measuring system according to claim 1-8, it is characterized in that, male and female button thread surface and circular bead surface that described main body pipe nipple is connected with the First Transition pipe nipple are provided with insulating layer, male and female button thread surface and circular bead surface that described main body pipe nipple is connected with the second transition pipe nipple are provided with insulating layer, box thread surface and circular bead surface that described First Transition pipe nipple is connected with the first connecting short section are provided with insulating layer, and box thread surface and circular bead surface that described the second transition pipe nipple is connected with the second connecting short section are provided with insulating layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201220560131.1U CN202914090U (en) | 2012-10-29 | 2012-10-29 | Insulation nipples for electromagnetic wave measurement while drilling system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201220560131.1U CN202914090U (en) | 2012-10-29 | 2012-10-29 | Insulation nipples for electromagnetic wave measurement while drilling system |
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| Publication Number | Publication Date |
|---|---|
| CN202914090U true CN202914090U (en) | 2013-05-01 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201220560131.1U Expired - Fee Related CN202914090U (en) | 2012-10-29 | 2012-10-29 | Insulation nipples for electromagnetic wave measurement while drilling system |
Country Status (1)
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| CN (1) | CN202914090U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103696755A (en) * | 2013-07-18 | 2014-04-02 | 西北工业大学 | Insulation pup joint used for electromagnetic wireless measurement while drilling and manufacturing method for insulation pup joint |
| CN104213911A (en) * | 2013-06-05 | 2014-12-17 | 中国石油天然气集团公司 | Insulating connection structure between underground electromagnetic wave measurement-while-drilling devices and manufacturing method |
-
2012
- 2012-10-29 CN CN201220560131.1U patent/CN202914090U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104213911A (en) * | 2013-06-05 | 2014-12-17 | 中国石油天然气集团公司 | Insulating connection structure between underground electromagnetic wave measurement-while-drilling devices and manufacturing method |
| CN104213911B (en) * | 2013-06-05 | 2017-04-12 | 中国石油天然气集团公司 | Insulating connection structure between underground electromagnetic wave measurement-while-drilling devices and manufacturing method |
| CN103696755A (en) * | 2013-07-18 | 2014-04-02 | 西北工业大学 | Insulation pup joint used for electromagnetic wireless measurement while drilling and manufacturing method for insulation pup joint |
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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: 20130501 Termination date: 20211029 |
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| CF01 | Termination of patent right due to non-payment of annual fee |