CN211008551U - A test end cap for preventing logging instrument falls into well - Google Patents
A test end cap for preventing logging instrument falls into well Download PDFInfo
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- CN211008551U CN211008551U CN201921969358.XU CN201921969358U CN211008551U CN 211008551 U CN211008551 U CN 211008551U CN 201921969358 U CN201921969358 U CN 201921969358U CN 211008551 U CN211008551 U CN 211008551U
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Abstract
The utility model belongs to the oil field test equipment field especially relates to a test end cap for preventing logging instrument well that falls. The anti-blowout connector is internally provided with an anti-blowout ball capable of plugging a cable hole, and the anti-blowout ball is arranged on the side surface of a test cable; the cable head is arranged at the upper end of the logging instrument, and the test cable is connected to the cable head; snatch the mechanism and include lock sleeve and elasticity lock collar, threaded connection is passed through at the lower extreme of plug in the upper end of lock sleeve, and the lower extreme of lock sleeve is provided with the confession the accommodation hole that the cable head got into, and the inboard processing of lock sleeve lower extreme has the annular groove, the elasticity lock collar install in this annular groove. The utility model discloses a set up and snatch the mechanism, can grasp the cable head in the twinkling of an eye of logging instrument striking test end cap to grasp logging instrument, prevent that logging instrument from falling into the well.
Description
Technical Field
The utility model belongs to the oil field test equipment field especially relates to a test end cap for preventing logging instrument well that falls.
Background
When oil field well logging, generally, a steel wire rope with a built-in cable is used as a test cable to lower a well logging instrument to the underground, and in order to prevent well fluid from being sprayed out, a test plug is required to be used for sealing the test cable. In actual operation, in order to guarantee efficiency of software testing, all adopt electric drive or hydraulic motor driven winch to realize receiving and releasing of test cable, when nevertheless test cable plays, when logging instrument is about to reach the well head, the staff that experience is not enough hardly makes the parking action accurately, leads to the test cable fracture behind the logging instrument striking test end cap, and logging instrument falls into the well, and the work of salvaging logging instrument wastes time and energy. Therefore, in order to prevent the logging instrument from falling into the well, it is necessary to design a testing plug which can effectively prevent the logging instrument from falling into the well.
Disclosure of Invention
The utility model provides a test end cap for preventing logging instrument well that falls to solve the problem that proposes among the above-mentioned background art.
The utility model provides a technical problem adopt following technical scheme to realize: the utility model provides a test plug for preventing logging instrument well falling, including plug and sealing member, still include blowout prevention joint, snatch mechanism and cable head, the center of plug, sealing member, blowout prevention joint and snatch mechanism all is provided with the cable hole that supplies the test cable to pass through, the sealing member is installed in the plug;
the blowout prevention joint is connected to the upper end of the plug through threads and seals the sealing element in the plug, a blowout prevention ball capable of plugging the cable hole is arranged in the blowout prevention joint, and the blowout prevention ball is arranged on the side face of the test cable;
the cable head is arranged at the upper end of the logging instrument, and the test cable is connected to the cable head;
the grabbing mechanism comprises a lock sleeve and an elastic lock ring, the upper end of the lock sleeve is connected to the lower end of the plug through threads, the lower end of the lock sleeve is provided with a containing hole for the cable head to enter, the inner side of the lower end of the lock sleeve is provided with an annular groove, and the elastic lock ring is arranged in the annular groove;
the annular groove is internally divided into a large inner diameter section, a small inner diameter section and an inner conical surface section from top to bottom, the end with larger diameter on the inner conical surface section is connected with the small inner diameter section, the cable head comprises a large outer diameter section and a small outer diameter section from top to bottom, chamfers are arranged on the upper side and the lower side of the large outer diameter section, the inner diameter of the accommodating hole is larger than the diameter of the large outer diameter section, the difference between the radius of the large inner diameter section and the radius of the large outer diameter section is larger than the cross-sectional diameter of the elastic locking ring, the difference between the radius of the small inner diameter section and the radius of the large outer diameter section is smaller than the cross-sectional diameter of the resilient locking ring, the difference between the radius of the small inner diameter section and the radius of the small outer diameter section is greater than the cross-sectional diameter of the resilient locking ring, the difference between the radius of the small-diameter end on the inner conical surface section and the radius of the small-outer-diameter section is smaller than the diameter of the cross section of the elastic locking ring;
the elastic locking ring is a circular ring-shaped structure surrounded by springs.
And a buffer spring is arranged in the accommodating hole. The side surface of the blowout prevention joint is provided with an upward inclined through hole, the blowout prevention ball is arranged in the through hole, a supporting spring is further arranged in the through hole, and the blowout prevention ball keeps a moving trend of approaching the test cable under the elastic force action of the supporting spring.
The utility model has the advantages that:
1. the utility model discloses a set up and snatch the mechanism, can grasp the cable head in the twinkling of an eye of logging instrument striking test end cap to grasp logging instrument, prevent that logging instrument from falling into the well.
2. The utility model discloses set up blowout preventer, the back is taken out to the test cable, prevents that the blowout ball can pop out in the twinkling of an eye that the test cable was taken out to with the cable hole shutoff, prevent that well liquid from spilling over.
Drawings
Fig. 1 is a schematic structural diagram of the present invention;
FIG. 2 is a schematic view of the construction of the resilient locking collar;
FIG. 3 is a schematic view of the construction of the annular sleeve;
fig. 4 is a partially enlarged view of a portion a in fig. 1.
In the figure: 1-blowout prevention joint, 2-plug, 3-sealing element, 4-locking sleeve, 5-buffer spring, 6-elastic locking ring, 7-annular sleeve, 8-logging instrument, 9-testing cable, 10-supporting spring, 11-blowout prevention ball, 12-notch, 13-large inner diameter section, 14-small inner diameter section, 15-inner conical surface section, 16-small outer diameter section, 17-large outer diameter section, 18-chamfer, 19-cable head and 20-accommodating hole.
Detailed Description
The invention is further described below with reference to the accompanying drawings:
the embodiment includes a plug 2 and a sealing member 3, which are general structures of the existing testing plug and will not be described herein.
The utility model discloses an innovation part lies in:
the utility model discloses still including preventing spouting joint 1, snatching the cable head 19 of mechanism and special shape, prevent spouting joint 1 through the setting, test cable 9 takes out the back with the cable hole shutoff, prevents that well liquid from spilling over, satisfies the environmental protection requirement of well site in the at utmost. Through setting up and snatching the mechanism, can grasp cable head 19 in the twinkling of an eye that 8 striking test plugs of logging instrument to grasp 8 of logging instrument, prevent 8 of logging instrument falling into the well.
The center of the pipe plug 2, the sealing element 3, the blowout prevention joint 1 and the grabbing mechanism is provided with a cable hole for a test cable 9 to pass through, the sealing element 3 is installed in the pipe plug 2, and the blowout prevention joint 1 is connected to the upper end of the pipe plug 2 through threads and seals the sealing element 3 in the pipe plug 2.
And a blowout prevention ball 11 capable of plugging a cable hole is arranged in the blowout prevention joint 1, and the blowout prevention ball 11 is arranged on the side surface of the test cable 11. The blowout prevention ball 11 can be popped out at the moment when the test cable 9 is pulled out, and the cable hole is plugged, so that the well fluid is prevented from overflowing. The side surface of the blowout prevention joint 1 is provided with an upward inclined through hole, the blowout prevention ball 11 is arranged in the through hole, a supporting spring 10 is further arranged in the through hole, and the blowout prevention ball 11 keeps a moving trend of approaching the test cable 9 under the elastic force of the supporting spring 10.
The cable head 19 is arranged at the upper end of the logging instrument 8, and the test cable 9 is connected to the cable head 19. This is the universal architecture on the current logging instrument 8, the utility model discloses only do the adaptability to the appearance of the cable head on the current logging instrument 8 and modify to in with snatch the mechanism phase-match, realize snatching the function, the inner structure of cable head 19 is as good as with current cable head.
The grabbing mechanism comprises a lock sleeve 4 and an elastic lock ring 6, the upper end of the lock sleeve 4 is connected to the lower end of the plug 2 through threads, the lower end of the lock sleeve 4 is provided with a containing hole 20 for the cable head 19 to enter, the inner side of the lower end of the lock sleeve 4 is provided with an annular groove, and the elastic lock ring 6 is installed in the annular groove;
divide into major diameter section 13, minor diameter section 14 and interior conical surface section 15 from top to bottom in the ring channel, the great one end of diameter on the interior conical surface section 15 with little in link up through section 14, cable head 19 includes major diameter section 17 and minor diameter section 16 from top to bottom, the upper and lower both sides of major diameter section 17 are provided with chamfer 18, the internal diameter of accommodation hole 20 is greater than major diameter section 17's diameter, major diameter section 13's radius with the difference of major diameter section 17's radius is greater than the cross-sectional diameter of elasticity lock ring 6, minor diameter section 14's radius with the difference of major diameter section 17's radius is less than the cross-sectional diameter of elasticity lock ring 6, minor diameter section 14's radius with the difference of minor diameter section 16's radius is greater than the cross-sectional diameter of elasticity lock ring 6, the difference of minor diameter end's radius on the section 15 with the radius of minor diameter section 16 is less than elasticity lock ring 6 Cross-sectional diameter of (a).
Based on the structure, at the moment that the logging instrument 8 impacts the testing plug, the cable head 19 is gradually inserted into the accommodating hole 20, in the inserting process, the elastic locking ring 6 is firstly pushed to the large inner diameter section 13 by the cable head, and then the elastic locking ring 6 is supported by the large outer diameter section 17, so that the large outer diameter section 17 can penetrate through the elastic locking ring 6. After the test cable 9 is broken off, the logging instrument 8 and the cable head 19 on the logging instrument drop under the action of self gravity, in the dropping process, the elastic locking ring 6 hooped outside the small outer diameter section 16 enters the small inner diameter section 14 under the driving of the cable head 19, and the large outer diameter section 17 cannot be separated because the inner wall of the small inner diameter section 14 limits the expansion of the elastic locking ring 6, so that the cable head 19 is grabbed, and the purpose of preventing the logging instrument 8 from falling into the well is achieved.
As shown in fig. 2, the elastic locking ring 6 is a circular ring-shaped structure surrounded by springs, and the elastic locking ring 6 adopts the structure, so that the insertion and the separation of the cable head 19 are more labor-saving, more reliable and simpler in structure.
The accommodating hole 20 is internally provided with a buffer spring 5, so that the impact of the logging instrument 8 on the testing plug can be effectively relieved.
In order to unlock the cable head 19 by the elastic locking ring 6, a thin-walled annular sleeve 7 is inserted into the gap between the cable head 19 and the locking sleeve 4, and the elastic locking ring 6 is blocked by the annular sleeve 7, so that the elastic locking ring 6 stays at the large inner diameter section 13 when the cable head 19 is pulled out, so that the outer side of the elastic locking ring 6 has enough expansion space to pull out the cable head 19. In a specific implementation, the annular sleeve 7 can be made of polyethylene, and the annular sleeve 7 is provided with a notch 12 on the side surface, so that after the annular sleeve 7 is opened from the notch 12, the annular sleeve 7 can be sleeved outside the small outer diameter section 16 of the cable head 19, and the thin-walled end of the annular sleeve 7 can be conveniently inserted into the gap between the cable head 19 and the lock sleeve 4.
Claims (3)
1. A test plug for preventing logging instruments from falling into a well comprises a plug (2) and a sealing element (3), and is characterized in that: the testing device also comprises a blowout prevention connector (1), a grabbing mechanism and a cable head (19), wherein cable holes for test cables (9) to pass through are formed in the centers of the plug (2), the sealing element (3), the blowout prevention connector (1) and the grabbing mechanism, and the sealing element (3) is arranged in the plug (2);
the blowout prevention connector (1) is connected to the upper end of the plug (2) through threads, the sealing element (3) is sealed in the plug (2), a blowout prevention ball (11) capable of plugging a cable hole is arranged in the blowout prevention connector (1), and the blowout prevention ball (11) is arranged on the side face of the test cable (9);
the cable head (19) is arranged at the upper end of the logging instrument (8), and the test cable (9) is connected to the cable head (19);
the grabbing mechanism comprises a lock sleeve (4) and an elastic lock ring (6), the upper end of the lock sleeve (4) is connected to the lower end of the plug (2) through threads, the lower end of the lock sleeve (4) is provided with a containing hole (20) for the cable head (19) to enter, the inner side of the lower end of the lock sleeve (4) is processed with an annular groove, and the elastic lock ring (6) is installed in the annular groove;
divide into big internal diameter section (13), little internal diameter section (14) and interior conical surface section (15) from top to bottom in the ring channel, interior conical surface section (15) go up the great one end of diameter with little internal diameter section (14) link up, cable head (19) include big external diameter section (17) and little external diameter section (16) from top to bottom, the upper and lower both sides of big external diameter section (17) are provided with chamfer (18), the internal diameter of accommodation hole (20) is greater than the diameter of big external diameter section (17), the radius of big internal diameter section (13) with the difference of the radius of big external diameter section (17) is greater than the cross sectional diameter of elasticity lock circle (6), the radius of little internal diameter section (14) with the difference of the radius of big external diameter section (17) is less than the cross sectional diameter of elasticity lock circle (6), the radius of little internal diameter section (14) with the difference of the radius of little external diameter section (16) is greater than the transversal cross sectional diameter of elasticity lock circle (6) A face diameter, the difference between the radius of the small diameter end on the inner conical section (15) and the radius of the small outer diameter section (16) being smaller than the cross-sectional diameter of the resilient locking ring (6);
the elastic locking ring (6) is a circular ring-shaped structure surrounded by springs.
2. The testing plug of claim 1, wherein the testing plug is adapted to prevent a logging instrument from falling into a well, and further comprising: a buffer spring (5) is arranged in the accommodating hole (20).
3. The testing plug of claim 1, wherein the testing plug is adapted to prevent a logging instrument from falling into a well, and further comprising: the side surface of the blowout prevention joint (1) is provided with an upward inclined through hole, the blowout prevention ball (11) is installed in the through hole, a supporting spring (10) is further arranged in the through hole, and the blowout prevention ball (11) keeps a moving trend approaching to the test cable (9) under the elastic force action of the supporting spring (10).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921969358.XU CN211008551U (en) | 2019-11-15 | 2019-11-15 | A test end cap for preventing logging instrument falls into well |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921969358.XU CN211008551U (en) | 2019-11-15 | 2019-11-15 | A test end cap for preventing logging instrument falls into well |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211008551U true CN211008551U (en) | 2020-07-14 |
Family
ID=71473340
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921969358.XU Active CN211008551U (en) | 2019-11-15 | 2019-11-15 | A test end cap for preventing logging instrument falls into well |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211008551U (en) |
-
2019
- 2019-11-15 CN CN201921969358.XU patent/CN211008551U/en active Active
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