CN201439714U - Special test pipe nipple for annulus test mine entrance - Google Patents
Special test pipe nipple for annulus test mine entrance Download PDFInfo
- Publication number
- CN201439714U CN201439714U CN2009201105255U CN200920110525U CN201439714U CN 201439714 U CN201439714 U CN 201439714U CN 2009201105255 U CN2009201105255 U CN 2009201105255U CN 200920110525 U CN200920110525 U CN 200920110525U CN 201439714 U CN201439714 U CN 201439714U
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- test
- pipe nipple
- top connection
- screw thread
- lower contact
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- Expired - Lifetime
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Abstract
The utility model relates to a special test pipe nipple for an annulus test mine entrance, which is used for connecting the test port of an oil field mine entrance and a test gate. The utility model is characterized in that screw threads are formed on the outer wall of an upper joint, a pressing screw cap is arranged on the screw threads, a gasket is arranged at the upper end of the pressing screw cap, an annular bulge is formed on the outer wall of the other end of the upper joint, a movable connecting hoop is sheathed on the annular bulge of the upper joint, a sealing groove is formed on the end of the upper joint, a sealing ring is arranged in the sealing groove, external screw threads are formed on the upper end of a lower joint, the upper end of the lower joint and the lower end of the upper joint are connected through a movable connecting hoop, screw threads are formed on the outer wall of the lower joint, a pressing screw cap is arranged on the screw threads, and a gasket is arranged at the lower end of the pressing screw cap. The utility model has the effects that the installed gasket and the pressing screw cap protect the weakest conical tube thread root of the test pipe nipple, improve the bending resistance and twisting resistance capability of the test pipe nipple, and eliminate the damage on the conical tube thread root of the test pipe nipple by the twisting moment or the bending force produced in the test operation process.
Description
Technical field
The utility model relates to the oilfield technical field of measurement and test, the special test pipe nipple that particularly a kind of annulus logging well head test port is connected with test strobe
Background technology
At present, in the oilfield test, the annulus logging well head is the on-the-spot a kind of pumpingh well wellhead assembly commonly used in oil field, can normally pump at oil well and carry out test jobs when producing, and realizes the pumpingh well dynamic monitoring.The test pipe nipple connects test port and test strobe, is the passage that testing tool, instrument remove.In February, 2008, certain Oilfield Company anteclise oil field operation district wellblock SN6174 well in implementing the test jobs process, because of violation operation causes the fracture of test pipe nipple taper pipe thread root, causes gas blowout accident; In April, 2009, certain wellblock SN6886 well is in the test jobs process, because of the position screw thread distortion of test pipe nipple taper pipe thread causes the well head natural gas leaking to cause test jobs to interrupt.Analyze the reason of two accidents: the test pipe nipple lower contact that test pipe nipple fracture end that takes out from SN6174 and SN6886 are out of shape as can be seen, test pipe nipple taper pipe thread position is subjected to torsion or curved power effect in the construction operation process, be the immediate cause that causes the accident.With regard to test pipe nipple self, owing to be subjected to the restriction of well head size, test pipe nipple tube wall is thinner, external diameter φ 43mm, tube wall 4.5mm, thread root and tooth top 1.5mm, screw thread position tube wall is 3mm only, is difficult to bear bigger torsion or moment of flexure, in the test jobs process, if misoperation very easily causes damage, thereby causing gas blowout accident, is the major hidden danger in the field produces on-the-spot test operation process.
The utility model content
The purpose of this utility model is: a kind of annulus logging well head special test pipe nipple is provided, clamping nut and packing ring are all installed in the lower contact two ends in the employing, can effectively improve the weakest taper pipe thread Root Stress state of test pipe nipple, improve test pipe nipple bending resistance anti-twisting property, eliminated the major hidden danger in the test jobs process.It is thinner to overcome annulus logging wellhead assembly test pipe nipple taper pipe thread position tube wall, is difficult to bear bigger torsion or curved power, the deficiency of very easily damaging in the test jobs process.
The technical solution adopted in the utility model is: annulus logging well head special test pipe nipple, mainly form by top connection, loose joint hoop, lower contact, packing ring, sealing ring and clamping nut, top connection is that cylinder bodily form center has through hole, in the upper end of top connection the conical tube external screw thread is arranged, can connect test strobe; Lower contact is that cylinder bodily form center has through hole, in the lower end of lower contact the conical tube external screw thread is arranged, and lower contact can be connected with annulus logging well head test port.
It is characterized in that: on the outer wall of top connection, screw thread is arranged, clamping nut is arranged on the screw thread.There is packing ring upper end at clamping nut.On the other end outer wall of top connection annular protrusion is arranged, be with the loose joint hoop on the annular protrusion of top connection, the loose joint hoop is also referred to as union.There is seal groove end in top connection.Sealing ring is arranged in the seal groove.There is external screw thread upper end in lower contact, can be connected with the loose joint hoop, and the upper end of lower contact is connected by the loose joint hoop with the lower end of top connection.On the outer wall of lower contact, screw thread is arranged, clamping nut is arranged on the screw thread.There is packing ring lower end at clamping nut.
The connection of annulus logging well head special test pipe nipple before test:
The conical tube external screw thread of lower contact is connected on the oil well annulus logging well head test port; Spin down tight nut, packing ring is pressed between clamping nut and the shaft mouth test test port.Top connection conical tube external screw thread connects test strobe, and upwards the tight nut of spinning is pressed between clamping nut and the test strobe packing ring.Seal groove in top connection installs sealing ring, tightens the loose joint hoop.Realize being connected between test strobe and the shaft mouth test test port.
The beneficial effects of the utility model: the utility model annulus logging well head special test pipe nipple, through field trial, obtain good result.Packing ring of installing and clamping nut have been protected the weakest taper pipe thread root of test pipe nipple, improve test pipe nipple bending resistance anti-twisting property, have eliminated the damage to test pipe nipple taper pipe thread root of the moment of torsion that produces in the test jobs process or curved power.
Description of drawings
Fig. 1 is the utility model annulus logging well head special test pipe nipple structural profile schematic diagram.
Among the figure, 1. top connection, 2. loose joint hoop, 3. lower contact, 4. packing ring, 5. sealing ring, 6. clamping nut.
The specific embodiment
Embodiment 1: with an annulus logging well head special test pipe nipple is example, and the utility model is described in further detail.
Consult Fig. 1.The utility model annulus logging well head special test pipe nipple is made up of top connection 1, loose joint hoop 2, lower contact 3, packing ring 4, sealing ring 5 and clamping nut 6.Top connection 1 has through hole for cylinder bodily form center, in the upper end of top connection 1 the conical tube external screw thread is arranged, and can connect test strobe; Lower contact 3 has through hole for cylinder bodily form center, in the lower end of lower contact 3 the conical tube external screw thread is arranged, and lower contact 3 can be connected with annulus logging well head test port.The through hole of top connection 1 and lower contact 3 can pass through testing tool.
On the outer wall of top connection 1, screw thread is arranged, a clamping nut 6 is arranged on the screw thread.A packing ring 4 is arranged in the upper end of clamping nut 6.The external diameter of packing ring 4 is identical with the external diameter of clamping nut 6, and thickness is 8 millimeters.On the other end outer wall of top connection 1, annular protrusion is arranged, on the annular protrusion of top connection 1, be with loose joint hoop 2 (union).A seal groove is arranged in the end of top connection 1.A sealing ring 5 is arranged in the seal groove.There is external screw thread upper end in lower contact 3, and the upper end of lower contact 3 is connected by loose joint hoop 2 with the lower end of top connection 1.On the outer wall of lower contact 3, screw thread is arranged, a clamping nut 6 is arranged on the screw thread.A packing ring 4 is arranged in the lower end of clamping nut 6.
Loose joint hoop 2 is handled with the external surface annular knurl of clamping nut 6, prevents to skid in the operating process.
Claims (1)
1. annulus logging well head special test pipe nipple, mainly form by top connection (1), loose joint hoop (2), lower contact (3), packing ring (4), sealing ring (5) and clamping nut (6), top connection (1) has through hole for cylinder bodily form center, in the upper end of top connection (1) the conical tube external screw thread is arranged; Lower contact (3) has through hole for cylinder bodily form center, there is the conical tube external screw thread lower end in lower contact (3), it is characterized in that: on the outer wall of top connection (1), screw thread is arranged, clamping nut (6) is arranged on the screw thread, in the upper end of clamping nut (6) packing ring (4) is arranged, on the other end outer wall of top connection (1), annular protrusion is arranged, on the annular protrusion of top connection (1), be with loose joint hoop (2), there is seal groove end in top connection (1), sealing ring (5) is arranged in the seal groove, there is external screw thread upper end in lower contact (3), the upper end of lower contact (3) is connected by loose joint hoop (2) with the lower end of top connection (1), on the outer wall of lower contact (3), screw thread is arranged, clamping nut (6) is arranged on the screw thread, packing ring (4) is arranged in the lower end of clamping nut (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201105255U CN201439714U (en) | 2009-07-27 | 2009-07-27 | Special test pipe nipple for annulus test mine entrance |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201105255U CN201439714U (en) | 2009-07-27 | 2009-07-27 | Special test pipe nipple for annulus test mine entrance |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201439714U true CN201439714U (en) | 2010-04-21 |
Family
ID=42544384
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009201105255U Expired - Lifetime CN201439714U (en) | 2009-07-27 | 2009-07-27 | Special test pipe nipple for annulus test mine entrance |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201439714U (en) |
-
2009
- 2009-07-27 CN CN2009201105255U patent/CN201439714U/en not_active Expired - Lifetime
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20100421 |
|
| CX01 | Expiry of patent term |