CN201406993Y - Direct-connected oil and gas well pipe - Google Patents
Direct-connected oil and gas well pipe Download PDFInfo
- Publication number
- CN201406993Y CN201406993Y CN200920045416XU CN200920045416U CN201406993Y CN 201406993 Y CN201406993 Y CN 201406993Y CN 200920045416X U CN200920045416X U CN 200920045416XU CN 200920045416 U CN200920045416 U CN 200920045416U CN 201406993 Y CN201406993 Y CN 201406993Y
- Authority
- CN
- China
- Prior art keywords
- gas well
- oil
- conical surface
- oil gas
- thread
- 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 - Lifetime
Links
- 238000007789 sealing Methods 0.000 abstract description 7
- 238000004519 manufacturing process Methods 0.000 abstract description 6
- 230000000694 effects Effects 0.000 abstract description 3
- 238000003754 machining Methods 0.000 abstract description 2
- 239000003129 oil well Substances 0.000 abstract description 2
- 230000005540 biological transmission Effects 0.000 abstract 1
- 238000011084 recovery Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 239000012467 final product Substances 0.000 description 2
- 238000010923 batch production Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 239000000047 product Substances 0.000 description 1
Landscapes
- Earth Drilling (AREA)
Abstract
The utility model discloses a direct-connected oil and gas well pipe used for a high-pressure oil well, a gas transmission pipeline and a medium and high-pressure gas well in an oil field. The direct-connected oil and gas well pipe comprises a pipe body. One end of the pipe body is provided with external thread, and the other end is provided with internal thread which is matched and screwed with the external thread; the outer wall of the pipe body is provided with an outer conical surface close to one side of the top end of the external thread; the inner wall of the pipe body is provided withan inner conical surface which is closely attached to the outer conical surface close to one side of the tail end of the internal thread after the external thread is screwed into the internal thread;when two oil and gas well pipes are connected, the external thread on one oil and gas well pipe is screwed into the internal thread on the other oil and gas well pipe, and the two oil and gas well pipes are connected together. Through the structural form of the oil and gas well pipe, the two oil and gas well pipes are connected only by screwing the external thread with the internal thread, the connection is convenient, the connection strength is higher, through the close fit of the outer conical surface and the inner conical surface, the sealing effect of the oil and gas well pipe after connection is improved, the machining difficulty in product manufacturing is lowered, and the production efficiency and yield of the products are improved.
Description
Technical field
The utility model relates to a kind of direct linkage type oil gas well casing that is used for oil field high pressure oil wells, appendix and mesohigh gas well.
Background technology
Along with oil, the harsh day by day and oil-gas mining technology rapid development of gas well drilling environment, be used for oilfield exploitation, the length of the oil gas well casing that oil gas is carried is also more and more longer, usually adopt box cupling spare ways of connecting at present, by box cupling spare the oil gas well casing of fixed length is connected into required length, but numerous oil gas well casings is coupled together, need a lot of box cupling spares, not only take a lot of work but also take material during making, batch process efficient is low, simultaneously, the tooth form of connecting thread adopts the inclined to one side acme thread of API (American Petroleum Institute (API)) mostly, to the requirement on machining accuracy height, difficulty is big, the lumber recovery of product is also lower, moreover numerous tie points also produces certain influence to bonding strength and sealing effectiveness.
The utility model content
The technical problems to be solved in the utility model is: overcome the deficiency of prior art, a kind of direct linkage type oil gas well casing is provided, it is convenient and simple for connection, connects the back good airproof performance, can reduce difficulty of processing simultaneously, improves production efficient and lumber recovery.
The technical scheme that its technical problem that solves the utility model adopts is: a kind of direct linkage type oil gas well casing, comprise body, body one end has external screw thread, the other end has the internal thread that can match and screw with external screw thread, when two oil gas well casings connect, screw into internal thread on another root oil gas well casing on oil gas well casing, two oil gas well casings are coupled together.
Specifically, the tooth form of described external screw thread and internal thread is a round thread.
Sealing performance when connecting for improving the oil gas well casing better, nearly external screw thread top one side has outer conical surface on the described tube wall, nearly female ends one side has after screwing into internal thread the internal conical surface that can fit with outer conical surface on the inboard wall of tube body, tighten when being connected by external screw thread and internal thread at two oil gas well casings, outer conical surface and internal conical surface fit tightly, thereby play the effective seal effect.
Furtherly, the gradient of described outer conical surface and internal conical surface is 30 °.
The beneficial effects of the utility model are: form of structure of the present utility model, make when two oil gas well casings connect, only need tighten and get final product by external screw thread and internal thread, easy to connect, bonding strength is higher, and closely cooperating of outer conical surface and internal conical surface helps improving the sealing effectiveness that connects back oil gas well casing, difficulty of processing when also having reduced production has simultaneously improved production efficient and lumber recovery.
Description of drawings
Below in conjunction with drawings and Examples the utility model is further specified.
Fig. 1 is a structural representation of the present utility model.
1. bodys, 2. external screw threads, 3. internal threads, 4. outer conical surface, 5. internal conical surfaces among the figure
The specific embodiment.
In conjunction with the accompanying drawings the utility model is further described now.These accompanying drawings are the schematic diagram of simplification, basic structure of the present utility model only is described in a schematic way, so it only show the formation relevant with the utility model.
A kind of direct linkage type oil gas well casing as shown in Figure 1, comprise hollow tube body 1, the left end of body 1 has external screw thread 2, right-hand member has the internal thread 3 that can match and screw with external screw thread 2, the tooth form of external screw thread 2 and internal thread 3 all adopts and meets the round thread that API requires, its pitch is per inch 8 teeth, after tightening, the screw thread of this structure has stronger sealing, and processing is simple relatively, adds used cutter in man-hour, the measurer comparative maturity is convenient to workman's operation, can reduce production costs, when two oil gas well casings connected, the external screw thread 2 of left end screwed in the internal thread 3 of right-hand member on another root oil gas well casings on oil gas well casing, thereby two oil gas well casings are coupled together.
For improving the sealing performance after the oil gas well casing connects better, nearly external screw thread 2 tops one side has outer conical surface 4 on body 1 outer wall, nearly internal thread 3 terminal sides have after external screw thread 2 screws in internal threads 3 internal conical surface 5 that can fit with outer conical surface 4 on body 1 inwall, the gradient of outer conical surface 4 and internal conical surface 5 is 30 °, when an oil gas well casing is connected with internal thread 3 by external screw thread 2 with another root oil gas well casing, outer conical surface 4 fits tightly with internal conical surface 5, primary seal as the oil gas well casing, can play the better seal effect, prevent oil and gas leakage, also reduced difficulty of processing simultaneously.
During use, can be according to Len req, some oil gas well casings are linked to each other successively, during connection, an oil gas well casing is screwed into the internal thread 3 of another root oil gas well casing by the external screw thread on it 2, tighten and get final product, easy to connect, the oil gas well casing adopts this direct-connected ways of connecting, and the bonding strength after it connects is equal to single body, external screw thread 2 with add fitting tightly of outer conical surface 4 and internal conical surface 5 being connected of internal thread 3, help improving the sealing after the oil gas well casing connects.
More than state bright content and be enlightenment, the related work personnel can carry out various change and modification fully in the scope that does not depart from the utility model technological thought.Technical scope of the present utility model is not limited to the content on the manual, must determine its technical scope according to the claim scope.
Claims (4)
1. direct linkage type oil gas well casing, comprise body (1), it is characterized in that: body (1) one end has external screw thread (2), the other end has the internal thread (3) that can match and screw with external screw thread (2), when two oil gas well casings connect, external screw thread (2) on oil gas well casing screws in the internal thread (3) on another root oil gas well casing, and two oil gas well casings are coupled together.
2. direct linkage type oil gas well casing according to claim 1 is characterized in that: the tooth form of described external screw thread (2) and internal thread (3) is a round thread.
3. direct linkage type oil gas well casing according to claim 1, it is characterized in that: nearly external screw thread (2) top one side has outer conical surface (4) on described body (1) outer wall, and the nearly terminal side of internal thread (3) has after external screw thread (2) screws in internal thread (3) internal conical surface (5) that can fit tightly with outer conical surface (4) on body (1) inwall.
4. direct linkage type oil gas well casing according to claim 3 is characterized in that: the gradient of described outer conical surface (4) and internal conical surface (5) is 30 °.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200920045416XU CN201406993Y (en) | 2009-05-19 | 2009-05-19 | Direct-connected oil and gas well pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200920045416XU CN201406993Y (en) | 2009-05-19 | 2009-05-19 | Direct-connected oil and gas well pipe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201406993Y true CN201406993Y (en) | 2010-02-17 |
Family
ID=41677926
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200920045416XU Expired - Lifetime CN201406993Y (en) | 2009-05-19 | 2009-05-19 | Direct-connected oil and gas well pipe |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201406993Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103670289A (en) * | 2013-12-08 | 2014-03-26 | 无锡蚂蚁微威科技有限公司 | Oil well pipeline |
-
2009
- 2009-05-19 CN CN200920045416XU patent/CN201406993Y/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103670289A (en) * | 2013-12-08 | 2014-03-26 | 无锡蚂蚁微威科技有限公司 | Oil well pipeline |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 213100 No. 66 West Wujin Road, Wujin District, Jiangsu, Changzhou Patentee after: Jiangsu Shengda Petroleum Equipment Manufacturing Co., Ltd. Address before: 213100 No. 66 West Wujin Road, Wujin District, Jiangsu, Changzhou Patentee before: Jiangsu Shined Petroleum Equipment Manufacturing Co., Ltd. |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20100217 |