CN204266941U - The antitorque high sealing performance drill collar of height for oil gas perforating and fracturing - Google Patents
The antitorque high sealing performance drill collar of height for oil gas perforating and fracturing Download PDFInfo
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- CN204266941U CN204266941U CN201420671354.4U CN201420671354U CN204266941U CN 204266941 U CN204266941 U CN 204266941U CN 201420671354 U CN201420671354 U CN 201420671354U CN 204266941 U CN204266941 U CN 204266941U
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- female adapter
- sealing
- male connection
- drill collar
- height
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Abstract
The utility model relates to the antitorque high sealing performance drill collar of a kind of height for oil gas perforating and fracturing.Comprise male connection and female adapter, male connection and female adapter are by together with the threaded engagement vertically with identical tapering, male connection is provided with the first outer step from thread segment successively to joint end face, sealing male cone (strobilus masculinus), second outer step, female adapter is provided with step in first from thread segment successively to joint inner face, sealing inner conical surface, step in second, male cone (strobilus masculinus) and sealing inner conical surface interference fit is sealed when male connection and female adapter threaded engagement complete, when male connection and female adapter threaded engagement complete, the first outer step coordinates with step clearance in first, when male connection and female adapter threaded engagement complete, the second outer step coordinates with step clearance in second.Its torsional strength is raising about 20% ~ 100% compared with API standard tool joint, and metal conical surface sealing structure has that sealing contact surface is long, sealing load is high, wear-resistant, processing is simple, it is simple to detect and repair, sealed diameter can the feature such as nose balance.
Description
Technical field
The utility model relates to the drill collar joint used in the recovery process of oil well, gas well, deep-well, ultradeep well and shale gas, particularly the antitorque high sealing performance drill collar of a kind of height for oil gas perforating and fracturing.
Background technology
Along with the development of oil exploration technology and the expansion of Exploration Domain, deep oil-gas reservoir, HTHP oil-gas reservoir, sulfur crude gas reservoir, Condensate Gas Reservoir and the special oil and gas pools such as low pressure, hypotonic, low abundance oil-gas reservoir are in succession found and exploit, the pressure break of hp-ht well and exceptional well thereof, measuring technology start to be used widely, oil-gas mining is in the urgent need to a kind of drill collar not only having had higher torsional strength but also had high sealing performance, to meet high-pressure gas well, deep-well, the needs in ultradeep well operation.
In the design of existing API standard, drill collar joint, without high pressure seal structure, is only designed with main circular bead surface, can only bear the pressure of below 50MPa.The method that usual use oil pipe adds the common drill collar of API carries out the operations such as pressure break test, can meet the demands completely in conventional well drilling process.But the oil-gas reservoir and needing running into HTHP carry out perforation, pressure break test well time, the drill collar of joining has very high gas sealing ability could meet operation needs.
Utility model content
The purpose of this utility model is to provide a kind of height for oil gas perforating and fracturing antitorque high sealing performance drill collar, mainly solve the technical problem existing for above-mentioned prior art, its torsional strength is raising about 20% ~ 100% compared with API standard tool joint, it is long that metal conical surface sealing structure has sealing contact surface, sealing load is high, wear-resistant, processing is simple, detect and repair simple, sealed diameter can the feature such as nose balance, gas well at HTHP can be met, ultradeep well, drill collar test in Horizontal Well Drilling well operations, the needs of pressure break test, therefore good popularization and application scenario is possessed.
For achieving the above object, the utility model realizes like this.
The antitorque high sealing performance drill collar of height for oil gas perforating and fracturing, comprises male connection and female adapter, and described male connection and female adapter are by together with the threaded engagement vertically with identical tapering, it is characterized in that: described male connection is provided with the first outer step from thread segment successively to joint end face, sealing male cone (strobilus masculinus), second outer step, described female adapter is provided with step in first from thread segment successively to joint inner face, sealing inner conical surface, step in second, male cone (strobilus masculinus) and sealing inner conical surface interference fit is sealed when described male connection and female adapter threaded engagement complete, when described male connection and female adapter threaded engagement complete, the first outer step coordinates with step clearance in first, when described male connection and female adapter threaded engagement complete, the second outer step coordinates with step clearance in second.
The described antitorque high sealing performance of the height for oil gas perforating and fracturing drill collar, it is characterized in that: between described male connection sealing male cone (strobilus masculinus) and the second outer shoulder, spacing is 2 ~ 10mm, in described female adapter sealing inner conical surface and second, between shoulder, spacing is 5 ~ 13mm.
The described antitorque high sealing performance of the height for oil gas perforating and fracturing drill collar, it is characterized in that: described male connection sealing male cone (strobilus masculinus) angular range is 5 ° ~ 25 °, sealing male cone (strobilus masculinus) length range 5mm ~ 15mm, described female adapter sealing inner conical surface angular range is 10 ° ~ 30 °, and sealing inner conical surface length range is 6mm ~ 14mm; The described diametric maximum interference amount that is interference fitted in is 0.10 ~ 0.45mm.
The described antitorque high sealing performance of the height for oil gas perforating and fracturing drill collar, is characterized in that: the tapering in described the first outer step and first between step is 1:4 ~ 1:16.
The described antitorque high sealing performance of the height for oil gas perforating and fracturing drill collar, is characterized in that: in described the second outer step and second, the tapering of step is 1:4 ~ 1:16.
The described antitorque high sealing performance of the height for oil gas perforating and fracturing drill collar, is characterized in that: the gap≤0.5mm of male connection end face and female adapter inner face when described male connection and female adapter threaded engagement complete.
Drill collar of the present utility model adopts said structure, its torsional strength is raising about 20% ~ 100% compared with API standard tool joint, metal conical surface sealing structure has that sealing contact surface is long, sealing load is high, wear-resistant, processing is simple, it is simple to detect and repair, sealed diameter can the feature such as nose balance, the needs of drill collar test in gas well at HTHP, ultradeep well, Horizontal Well Drilling well operations, pressure break test can be met, therefore possess good popularization and application scenario.
Accompanying drawing explanation
Fig. 1 is the utility model structural representation.
Detailed description of the invention
As Fig. 1, the utility model discloses the antitorque high sealing performance drill collar of a kind of height for oil gas perforating and fracturing.As shown in the figure: it comprises male connection 1 and female adapter 2, male connection 1 is provided with the first outer step 13, sealing male cone (strobilus masculinus) 14, second outer step 15 successively from thread segment 11 to joint end face 12, described female adapter 2 is provided with step 25 in step 23 in first, sealing inner conical surface 24, second successively from thread segment 21 to joint inner face 22.
Male cone (strobilus masculinus) 14 and sealing inner conical surface 24 interference fit is sealed, step 23 matched in clearance in the first outer step 13 and first, 25 matched in clearance between step in the second outer step 15 and second when male connection 1 and female adapter 2 threaded engagement complete.
Between the sealing male cone (strobilus masculinus) 14 of male connection 1 and the second outer shoulder 15, spacing is 2 ~ 10mm, and in the sealing inner conical surface of female adapter 2 24 and second, between shoulder 25, spacing is 5 ~ 13mm.
Sealing male cone (strobilus masculinus) 14 angular range of male connection 1 is 5 ° ~ 25 °, sealing male cone (strobilus masculinus) 14 length range 5mm ~ 15mm, and sealing inner conical surface 24 angular range of female adapter 2 is 10 ° ~ 30 °, and sealing inner conical surface 24 length range is 6mm ~ 14mm; Being interference fitted in diametric maximum interference amount is 0.10 ~ 0.45mm.
In first outer step 13 and first, the tapering of step 23 is 1:4 ~ 1:16.
In second outer step 15 and second, the tapering of step 25 is 1:4 ~ 1:16.
Gap≤the 0.5mm of male connection end face 12 and female adapter inner face 22 when described male connection 1 and female adapter 2 threaded engagement complete.
Meanwhile, owing to sealing male cone (strobilus masculinus) 14 and the metal interference fitted seal sealing inner conical surface 24 between male connection 1 and female adapter 2, and the maximum interference amount in metal interference sealed diameter direction is 0.15 ~ 0.45mm, therefore have very high gas, liquid sealing ability, sealability can reach 120MPa.
Because torsional strength of the present utility model is higher than API standard tool joint, there is very high gas, liquid sealing ability simultaneously, be therefore specially adapted to the needs of oil gas perforating and fracturing test in high-pressure gas well, ultradeep well, Horizontal Well Drilling well operations.
Be only preferred embodiment of the present utility model in sum, be not used for limiting practical range of the present utility model.Namely all equivalences done according to the content of the utility model claim change and modify, and all should be technology category of the present utility model.
Claims (6)
1. for the antitorque high sealing performance drill collar of height of oil gas perforating and fracturing, comprise male connection and female adapter, described male connection and female adapter are by together with the threaded engagement vertically with identical tapering, it is characterized in that: described male connection is provided with the first outer step from thread segment successively to joint end face, sealing male cone (strobilus masculinus), second outer step, described female adapter is provided with step in first from thread segment successively to joint inner face, sealing inner conical surface, step in second, male cone (strobilus masculinus) and sealing inner conical surface interference fit is sealed when described male connection and female adapter threaded engagement complete, when described male connection and female adapter threaded engagement complete, the first outer step coordinates with step clearance in first, when described male connection and female adapter threaded engagement complete, the second outer step coordinates with step clearance in second.
2. the antitorque high sealing performance drill collar of the height for oil gas perforating and fracturing according to claim 1, it is characterized in that: between described male connection sealing male cone (strobilus masculinus) and the second outer shoulder, spacing is 2 ~ 10mm, in described female adapter sealing inner conical surface and second, between shoulder, spacing is 5 ~ 13mm.
3. the antitorque high sealing performance drill collar of the height for oil gas perforating and fracturing according to claim 1, it is characterized in that: described male connection sealing male cone (strobilus masculinus) angular range is 5 ° ~ 25 °, sealing male cone (strobilus masculinus) length range 5mm ~ 15mm, described female adapter sealing inner conical surface angular range is 10 ° ~ 30 °, and sealing inner conical surface length range is 6mm ~ 14mm; The described diametric maximum interference amount that is interference fitted in is 0.10 ~ 0.45mm.
4. the antitorque high sealing performance drill collar of the height for oil gas perforating and fracturing according to claim 1, is characterized in that: the tapering in described the first outer step and first between step is 1:4 ~ 1:16.
5. the antitorque high sealing performance drill collar of the height for oil gas perforating and fracturing according to claim 1, is characterized in that: in described the second outer step and second, the tapering of step is 1:4 ~ 1:16.
6. the antitorque high sealing performance drill collar of the height for oil gas perforating and fracturing according to claim 1, is characterized in that: the gap≤0.5mm of male connection end face and female adapter inner face when described male connection and female adapter threaded engagement complete.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420671354.4U CN204266941U (en) | 2014-11-12 | 2014-11-12 | The antitorque high sealing performance drill collar of height for oil gas perforating and fracturing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420671354.4U CN204266941U (en) | 2014-11-12 | 2014-11-12 | The antitorque high sealing performance drill collar of height for oil gas perforating and fracturing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204266941U true CN204266941U (en) | 2015-04-15 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420671354.4U Active CN204266941U (en) | 2014-11-12 | 2014-11-12 | The antitorque high sealing performance drill collar of height for oil gas perforating and fracturing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204266941U (en) |
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2014
- 2014-11-12 CN CN201420671354.4U patent/CN204266941U/en active Active
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| GR01 | Patent grant |