CN2555398Y - Novel multithread tester - Google Patents
Novel multithread tester Download PDFInfo
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- CN2555398Y CN2555398Y CN 02262940 CN02262940U CN2555398Y CN 2555398 Y CN2555398 Y CN 2555398Y CN 02262940 CN02262940 CN 02262940 CN 02262940 U CN02262940 U CN 02262940U CN 2555398 Y CN2555398 Y CN 2555398Y
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- urceolus
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- sealing
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- 238000012360 testing method Methods 0.000 claims abstract description 45
- 238000007789 sealing Methods 0.000 claims abstract description 43
- 230000007246 mechanism Effects 0.000 claims abstract description 18
- 239000004519 grease Substances 0.000 claims description 22
- 239000000945 filler Substances 0.000 claims description 13
- 210000000078 claw Anatomy 0.000 claims description 9
- 230000007704 transition Effects 0.000 claims description 6
- 238000000034 method Methods 0.000 abstract description 5
- 230000008569 process Effects 0.000 abstract description 4
- 230000017105 transposition Effects 0.000 abstract 3
- 230000000007 visual effect Effects 0.000 abstract 1
- 229910000639 Spring steel Inorganic materials 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 238000005553 drilling Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000003715 interstitial flow Effects 0.000 description 2
- 235000008331 Pinus X rigitaeda Nutrition 0.000 description 1
- 235000011613 Pinus brutia Nutrition 0.000 description 1
- 241000018646 Pinus brutia Species 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000003111 delayed effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
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Abstract
The novel multi-flow tester is different from the existing multi-flow tester in that the test valve (1) is not provided with a transposition mechanism, the mechanical locking (3) is arranged on the upper part of the packer (4), the well is opened and closed by lowering and lifting, and in the well closing process, the slips (35) in the mechanical locking are clamped on the wall of a casing to ensure the sealing of the packer. When the packer is unsealed, the pipe column is lifted to a certain tensile force, mechanical locking is lost after time delay, the slips (35) are withdrawn, and the packer is unsealed. The method has the characteristics of simple and visual operation, accurate data recording and high test success rate; and the problem of damage to the transposition mechanism is avoided because the transposition mechanism is not provided.
Description
Novel multithread test device relates to a kind of testing tool that is used for formation testing.
At present, the domestic formation tester that generally uses is the Counterfeit Item of the multithread test device of U.S. MFE company, weak point is that switch well operation easier is big, cause packer to propose pine or inversion mechanism damage easily, for high-yield well, high-pressure well, bottom pressure promotes packer and moves up, and causes inversion mechanism not change position, switch well operation failure; Can not try with the Yu Haiyang well surveying.
The purpose of this utility model is to solve the deficiency of existing multithread test device, provides a kind of simple in structure, easy, the safety of working service, and the switch well is simple to operate, directly perceived, reliable, test success rate height, can be used for a kind of novel multithread test device of ocean test.
The purpose of this utility model can realize by following measure:
Novel multithread test device comprises multithread test valve (1), packer (4); Wherein: multithread test valve (1) comprise time-delay mechanism (5), black box (16), on seal mandrel (17), upper sleeve gasket (18), top connection (9), lower contact (12), it is characterized in that:
1. last mandrel (6) top in the multithread test valve time-delay mechanism (5) is connected with spline mandrel (7), is with spline urceolus (8) on the spline mandrel, and spline urceolus lower end is connected with time-delay mechanism's urceolus (11) upper end, and spline mandrel top is connected with top connection (9); The following termination mandrel pawl (10) of last sealing mandrel (17), mandrel pawl middle part is provided with radial hole (77), radial hole (77) is communicated with counterbore (78), the bottom is provided with several elastic claws (15), the elastic claw lower end inwardly is provided with step (19), and step (19) is stuck in the groove (29) on mandrel (22) top in the sampler (2); Time-delay mechanism's urceolus (11) termination transition joint (13) down, sealing shroud (18) is loaded onto in transition joint centre bore lower end, and external screw thread is connected with lower contact (12); The connecting thread end is equipped with the sealing ring sealing.
2. the sampler (2) that is connected to multithread test valve (1) bottom is made up of top connection (20), urceolus (21), mandrel (22), spring (23), sealing shroud (24), lower contact (12) and seal.Top connection (20) is connected with the lower contact (12) of multithread test valve (1), centre bore lower end dress sealing shroud (24), external screw thread dress urceolus (21); Mandrel (22) center is a through hole, the external cylindrical surface two ends are respectively equipped with one group of seal (27), the middle part is provided with boss (28), one end is provided with groove (29), between boss and groove, be provided with radial hole (30), a reeded end is inserted in the top connection centre bore, groove (29) is stuck on the elastic claw step (19) of the mandrel pawl (10) in the testing valve (1), spring (23) is enclosed within an end that does not have groove, adorn sealing shroud (24) on the lower end centre bore of urceolus (21), external screw thread is connected with lower contact (12); The connecting thread end is equipped with the sealing ring sealing, and top connection (20), urceolus are respectively equipped with gate gurgle valve, oil drainer on (21).
3. the mechanical interlocking (3) that is connected to sampler (2) bottom is made up of top connection (31), spline mandrel (32), upper cone (33), voussoir (34), slips (35), spring (36), extension spring (37), slips tube (38), spline urceolus (39), grease chamber's urceolus (40), mandrel (41), time-delay valve (42), valve nut (43), compensating piston (44), back-up ring (45), lower contact (46), oil filler plug (47), bolt (64) and seal.Top connection (31) upper end is connected with sampler lower contact (12), termination multiple key core axle (32) under the centre bore, and spline mandrel outside cylinder is provided with step (49), and the lower end is provided with spline (50), and the centre bore lower end is connected with mandrel (41) upper end; Upper cone (33) is enclosed within on the spline mandrel (32), upper cone (33) top is cylinder (51), the bottom is the cone (52) of certain taper, the cone upper end diameter forms step (53) greater than cylinder (51) diameter, and the centre bore upper end is provided with interior step (54) and hangs on the multiple key core pillow block rank (49); Slips tube (38) is enclosed within on the upper cone (33), slips tube (38) inner chamber upper end is provided with step (55) and hangs on the upper cone step (53), the slips cylindrical shell is provided with several grooves (56), the bottom is provided with slotted hole (65), be installed in the groove (56) watt (35), the slips tooth simultaneously is provided with groove (57), spring (36) one ends are pressed at the bottom of the slip groove, one end withstands on the slips barrel, the slips inside upper part, the bottom is respectively equipped with the inclined-plane of constant slope, lower inclined plane (58) is supported on the outer inclined-plane (59) of voussoir (34), inclined-plane (60) is pressed on the inclined-plane (52) of upper cone (33) in the voussoir, and the voussoir bottom is provided with groove (61), and extension spring (37) is housed in the groove, the voussoir lower end is supported on spline urceolus (39) upper surface (62), slips tube (38) lower end is enclosed within on the spline urceolus (39), and spline urceolus (39) external cylindrical surface upper end is provided with screw (63), and bolt (64) is housed in the screw, bolt exceeds spline urceolus external cylindrical surface, is inserted in the slips tube length hole (65); Spline urceolus (39) inner chamber is provided with spline (66), hangs on the spline mandrel lower end spline (50), and spline urceolus lower end is connected with grease chamber's urceolus (40); Grease chamber's urceolus (40) two ends are provided with oil filler point (67), oil filler plug (47) is housed in the oil filler point, inner chamber top (68) diameter is greater than bottom (69) diameter, the centre bore upper end is provided with seal (70) sealing mandrel (41) top, mandrel (41) middle part is provided with step (71), the step top is provided with sealing thread (72), time-delay valve (42) is enclosed within mandrel top, valve nut (43) is contained in screw thread (72) and goes up the constant time lag valve, the mandrel bottom is provided with radial hole (73) and is communicated with centre bore, urceolus lower end, grease chamber thread head is provided with radial hole (74), compensating piston (44) is housed in the inner chamber bottom (69), back-up ring (45) and lower contact (46) are housed in the screw thread of urceolus lower end, grease chamber; Lower contact (46) centre bore upper end is provided with seal (70) sealing mandrel (41) bottom, and the lower end is provided with male thread and is connected with its underpart instrument.Sealing ring (48) is located at the thread head sealing thread.
4. spline urceolus (39) the exterior circular column bottom in the mechanical interlocking (3) is provided with several righting strips (79).
5. mechanical interlocking (3) is not established time-delay valve (42) and valve nut (43), and mandrel step (71) is made as certain-length, and external diameter is slightly less than tube inner chamber bottom (69) internal diameter outside the grease chamber, does not establish sealing thread (72).
The utility model compared with prior art has following advantage:
1. transfer and drive a well, on carry closing well, the switch well is simple to operate, directly perceived, test success rate height.
2. the operation of switch well can not carried loose packer, records real strata pressure curve.
3. carry on the mechanical interlocking and produce a upwards jarring force after time-delay finishes, simultaneously, the radial hole of mandrel lower end makes pressure balance on the packer, helps the packer deblocking.
4. novel multithread test valve does not have inversion mechanism, and is simple in structure, intensity is high, the life-span is long, reliable operation.
5. sampler separates with testing valve, has alleviated the weight of single-piece assembly, is convenient to site operation.
5. maintaining is easy, is convenient to on-the-spot maintenance, and workload is little, can repeatedly use.
6. can be used for the marine drilling platform test.
Fig. 1 is novel multithread test device general assembly schematic diagram.
Fig. 2 is novel multithread test valve (1) and existing multithread test valve different piece partial sectional view.
Fig. 3 is the sampler sectional view.
Fig. 4 is the mechanical interlocking sectional view.
The utility model is described in further detail below in conjunction with accompanying drawing:
Time-delay mechanism (5) in the multithread test valve (1), top connection (9), lower contact (12), black box (16), on seal mandrel (17), upper sleeve gasket (18) is prior art, spline mandrel (7) upper end is provided with pin thread and seal groove, groove built-in ring (14), pin thread is connected with top connection (9), be arranged with boss (75) on the external cylindrical surface of lower end, the centre bore lower end is provided with box and seal groove, groove built-in ring (14), and box is connected with last mandrel (6); Spline urceolus (8) inner chamber is arranged with axial notch (76), the lower end is provided with box, and the upper end is a through hole, is enclosed within spline mandrel top, boss on the spline mandrel (75) is inserted in the groove (76) of spline urceolus, and the box of spline urceolus lower end is connected with time-delay mechanism's urceolus (11) upper end; Mandrel pawl (10) upper end is provided with box, the middle part is provided with radial hole (77), radial hole (77) is communicated with counterbore (78), the bottom is provided with several elastic claws (15), the elastic claw lower end inwardly is provided with step (19), box is connected with last sealing mandrel (17), and elastic claw (15) is enclosed within the top of the mandrel (22) in the sampler (2); Transition joint (13) upper/lower terminal all is made as pin thread, and be provided with seal groove, sealing ring (25) is housed in the groove, the centre bore lower end is provided with box, load onto sealing shroud (18) in the box, transition joint (13) top pin thread is connected on the lower end of time-delay mechanism's urceolus (11), and the bottom pin thread is connected with lower contact (12) box.
2. the sampler (2) that is connected to multithread test valve (1) bottom is made up of top connection (20), urceolus (21), mandrel (22), spring (23), sealing shroud (24), lower contact (12) and seal.Top connection (20) upper end is made as box, be connected with lower contact (12) pin thread of multithread test valve (1), the lower end is provided with pin thread and seal groove, groove built-in ring (26), pin thread is connected with urceolus (21) box, and top connection (20) is provided with gate gurgle valve, oil drainer, same prior art, the centre bore bottom is provided with box and sealing surface, dress sealing shroud (24) in the box, and sealing shroud (24) is a general part; Mandrel (22) two ends are respectively equipped with one group of seal (27), the center is a through hole, and external cylindrical surface is provided with boss (28), and an end is provided with groove (29), between boss and groove, be provided with radial hole (30), the reeded end of mandrel is inserted facing to the top connection centre bore; Spring (23) is formed by the steel wire coiling, is enclosed within the lower end of mandrel (22); Urceolus (21) upper end is made as box, be connected with the pin thread of top connection (20), the aperture on centre bore top is greater than the aperture of bottom, be provided with box and sealing surface in the lower through-hole, dress sealing shroud (24) in the box, the urceolus bottom is provided with gate gurgle valve, oil drainer, same prior art, the urceolus lower end is provided with pin thread and seal groove, groove built-in ring (26), and pin thread is connected with lower contact (12).
3. the mechanical interlocking (3) that is connected to sampler (2) bottom is made up of top connection (31), spline mandrel (32), upper cone (33), voussoir (34), slips (35), spring (36), extension spring (37), slips tube (38), spline urceolus (39), grease chamber's urceolus (40), mandrel (41), time-delay valve (42), valve nut (43), compensating piston (44), back-up ring (45), lower contact (46), oil filler plug (47) and seal.Time-delay valve (42), compensating piston (44), back-up ring (45), oil filler plug (47) and seal are prior art.Top connection (31) upper end is made as box, is connected with sampler lower contact (12), and the centre bore lower end is made as box, and the box end is provided with seal groove, groove built-in ring (48), and box is connected with spline mandrel (32) pin thread; Spline mandrel (32) top body diameter forms step (49) less than the lower cylindrical diameter, and the lower end is arranged with spline boss (50), and the centre bore lower end is provided with box and seal groove, groove built-in ring (48), and box is connected with mandrel (41) upper end pin thread; Upper cone (33) top is cylinder (51), the bottom is the cone (52) of certain taper, the cone upper end diameter forms step (53) greater than the diameter of cylinder (51), and the centre bore upper end is provided with interior step (54), and interior step (54) hangs on the multiple key core pillow block rank (49); Slips tube (38) inner chamber upper end is provided with step (55), and cylindrical shell is provided with several grooves (56), and the cylindrical shell lower end is arranged with 2 slotted holes (65), and slips tube step (55) hangs on the upper cone step (53), and the lower end is enclosed within on the spline urceolus (39); Slips (35) outside is made as tooth, and is provided with groove (57), and inside upper part, bottom are respectively equipped with the inclined-plane of constant slope, and slips (35) is contained in slips tube (38) groove (56), and lower inclined plane (58) is supported on the outer inclined-plane (59) of voussoir (34); Spring (36) is formed by the spring steel wire coiling, and an end is pressed in slips (35) bottom land, and an end withstands on the slips barrel; Voussoir (34) outer upper is provided with outer inclined-plane (59), the inboard is provided with interior inclined-plane (60), the bottom cylinder is provided with groove (61), and inclined-plane in the voussoir top (60) are pressed on the inclined-plane (52) of upper cone (33), and the voussoir lower end is supported on spline urceolus (39) upper surface (62); Extension spring (37) is formed by the spring steel wire coiling, is contained in the voussoir groove (61); Spline urceolus (39) external cylindrical surface upper end is provided with screw (63), bolt (64) is housed in the screw, bolt exceeds spline urceolus external cylindrical surface, be inserted in the slips tube lower end slotted hole (65), the outer tube inner chamber of spline is arranged with 2 splines (66), hang on the spline mandrel lower end spline boss (50), spline urceolus lower end box is connected with grease chamber's urceolus (40) upper end pin thread; Grease chamber's urceolus (40) two ends are provided with oil filler point (67), oil filler plug (47) is housed in the oil filler point, and inner chamber top (68) diameter is greater than bottom (69) diameter, and the centre bore upper end is provided with the top of seal (70) sealing mandrel (41), the lower end is made as box, and the box upper end is provided with radial hole (74); Mandrel (41) upper end is a pin thread, is connected with spline mandrel box, and the middle part is provided with step (71), and the step top is provided with sealing thread (72), and the mandrel bottom is provided with radial hole (73), and the center is a through hole; Time-delay valve (42) is enclosed within mandrel top, and valve nut (43) is contained in screw thread (72) and goes up the constant time lag valve, and compensating piston (44) is contained in urceolus bottom, grease chamber, and back-up ring (45) is contained in the box of grease chamber's urceolus (40) lower end; Lower contact (46) upper end is made as pin thread, is connected with urceolus lower end, grease chamber box, and the centre bore upper end is provided with seal (70) sealing mandrel (41) bottom, and the lower end is made as pin thread, is connected with its underpart instrument.Grease chamber's urceolus (40) inner chamber is full of hydraulic pressure time-delay oil.
After assembling by Fig. 1, with tubing string it is arrived the pit shaft precalculated position down, set packer (4), behind the packer setting, multithread test valve (1), mechanical interlocking (3) is under the effect of time-delay mechanism, the hydraulic pressure of time-delay valve (42) bottom time-delay oil at leisure from the interstitial flow between time-delay valve and the grease chamber's outer tube inner wall to time-delay valve top, mandrel is slowly descending, when mechanical interlocking top connection (31) lower surface contacts with the upper surface of upper cone (33), press down upper cone, cone is descending, strut voussoir (34), slips (35) tooth is contacted with casing wall, and testing valve (1) delay time is greater than the mechanical interlocking delay time, and the testing valve time-delay finishes the back testing valve and opens.During closing well, upper lifting pipe post slowly, when on after the power that lifts surpasses free point suspending weight 1-2t, slowly transfer tubing string to free point suspending weight (can a little less than the free point suspending weight) and stop to transfer.In upper lifting pipe post process, because the time-lag action of mechanical interlocking, produce a thrust that makes progress (or the strata pressure in the closing well process), make voussoir (34) give (35) outside tension force of slips, slip insert is stung on casing wall, cause the strata pressure of the power of lifting and packer below can not mobile packer, thereby guarantee that packer sealing is tight.During deblocking, upper lifting pipe post to suspending weight surpasses free point suspending weight 8t, carry on stopping, in upper lifting pipe post process, testing valve (1) is not delayed time, the mechanical interlocking time-delay, the hydraulic pressure on time-delay valve (42) top time-delay oil at leisure from the interstitial flow between time-delay valve and the grease chamber's outer tube inner wall to the time-delay valve bottom, spline mandrel (32), mandrel (41) moves on slowly, after time-delay valve (42) entered top (68) by inner chamber bottom (69), the gap between time-delay valve and the grease chamber's outer tube inner wall increased, and hydraulic pressure time-delay oil flows to time-delay valve bottom (time-delay finishes) apace, move on mandrel is quick, produce and hit power on certain, multiple key core pillow block rank (49) drive on the upper cones (33) and move, and voussoir (34) and slips (35) are in spring (36), the effect of extension spring (37) is regained down, the packer deblocking trips out test string.
Adjunction expansion joint between mechanical interlocking and testing valve just can be used for the marine drilling platform test.
Claims (3)
1. novel multithread test device comprises multithread test valve (1), packer (4), wherein: multithread test valve (1) comprise time-delay mechanism (5), black box (16), on seal mandrel (17), upper sleeve gasket (18), top connection (9), lower contact (12), it is characterized in that:
1) last mandrel (6) top in the multithread test valve time-delay mechanism (5) is connected with spline mandrel (7), is with spline urceolus (8) on the spline mandrel, and spline urceolus lower end is connected with time-delay mechanism's urceolus (11) upper end, and spline mandrel top is connected with top connection (9); The following termination mandrel pawl (10) of last sealing mandrel (17), mandrel pawl middle part is provided with radial hole (77), radial hole (77) is communicated with counterbore (78), the bottom is provided with several elastic claws (15), the elastic claw lower end inwardly is provided with step (19), and step (19) is stuck in the groove (29) on mandrel (22) top in the sampler (2); Time-delay mechanism's urceolus (11) termination transition joint (13) down, sealing shroud (18) is loaded onto in transition joint centre bore lower end, and external screw thread is connected with lower contact (12); The connecting thread end is equipped with the sealing ring sealing.
2) sampler (2) that is connected to multithread test valve (1) bottom is made up of top connection (20), urceolus (21), mandrel (22), spring (23), sealing shroud (24), lower contact (12) and seal.Top connection (20) is connected with the lower contact (12) of multithread test valve (1), centre bore lower end dress sealing shroud (24), external screw thread dress urceolus (21); Mandrel (22) center is a through hole, the external cylindrical surface two ends are respectively equipped with one group of seal (27), the middle part is provided with boss (28), one end is provided with groove (29), between boss and groove, be provided with radial hole (30), a reeded end is inserted in the top connection centre bore, groove (29) is stuck on the elastic claw step (19) of the mandrel pawl (10) in the testing valve (1), spring (23) is enclosed within an end that does not have groove, adorn sealing shroud (24) on the lower end centre bore of urceolus (21), external screw thread is connected with lower contact (12); The connecting thread end is equipped with the sealing ring sealing, and top connection (20), urceolus are respectively equipped with gate gurgle valve, oil drainer on (21).
3) mechanical interlocking (3) that is connected to sampler (2) bottom is made up of top connection (31), spline mandrel (32), upper cone (33), voussoir (34), slips (35), spring (36), extension spring (37), slips tube (38), spline urceolus (39), grease chamber's urceolus (40), mandrel (41), time-delay valve (42), valve nut (43), compensating piston (44), back-up ring (45), lower contact (46), oil filler plug (47), bolt (64) and seal.Top connection (31) upper end is connected with sampler lower contact (12), termination multiple key core axle (32) under the centre bore, and spline mandrel outside cylinder is provided with step (49), and the lower end is provided with spline (50), and the centre bore lower end is connected with mandrel (41) upper end; Upper cone (33) is enclosed within on the spline mandrel (32), upper cone (33) top is cylinder (51), the bottom is the cone (52) of certain taper, the cone upper end diameter forms step (53) greater than cylinder (51) diameter, and the centre bore upper end is provided with interior step (54) and hangs on the multiple key core pillow block rank (49); Slips tube (38) is enclosed within on the upper cone (33), slips tube (38) inner chamber upper end is provided with step (55) and hangs on the upper cone step (53), the slips cylindrical shell is provided with several grooves (56), the bottom is provided with slotted hole (65), be installed in the groove (56) watt (35), the slips tooth simultaneously is provided with groove (57), spring (36) one ends are pressed at the bottom of the slip groove, one end withstands on the slips barrel, the slips inside upper part, the bottom is respectively equipped with the inclined-plane of constant slope, lower inclined plane (58) is supported on the outer inclined-plane (59) of voussoir (34), inclined-plane (60) is pressed on the inclined-plane (52) of upper cone (33) in the voussoir, and the voussoir bottom is provided with groove (61), and extension spring (37) is housed in the groove, the voussoir lower end is supported on spline urceolus (39) upper surface (62), slips tube (38) lower end is enclosed within on the spline urceolus (39), and spline urceolus (39) external cylindrical surface upper end is provided with screw (63), and bolt (64) is housed in the screw, bolt exceeds spline urceolus external cylindrical surface, is inserted in the slips tube length hole (65); Spline urceolus (39) inner chamber is provided with spline (66), hangs on the spline mandrel lower end spline (50), and spline urceolus lower end is connected with grease chamber's urceolus (40); Grease chamber's urceolus (40) two ends are provided with oil filler point (67), oil filler plug (47) is housed in the oil filler point, inner chamber top (68) diameter is greater than bottom (69) diameter, the centre bore upper end is provided with seal (70) sealing mandrel (41) top, mandrel (41) middle part is provided with step (71), the step top is provided with sealing thread (72), time-delay valve (42) is enclosed within mandrel top, valve nut (43) is contained in screw thread (72) and goes up the constant time lag valve, the mandrel bottom is provided with radial hole (73) and is communicated with centre bore, urceolus lower end, grease chamber thread head is provided with radial hole (74), compensating piston (44) is housed in the inner chamber bottom (69), back-up ring (45) and lower contact (46) are housed in the screw thread of urceolus lower end, grease chamber; Lower contact (46) centre bore upper end is provided with seal (70) sealing mandrel (41) bottom, and the lower end is provided with male thread and is connected with its underpart instrument.Seal (48) is located at the thread head sealing thread.
2. novel multithread test device according to claim 1 is characterized in that spline urceolus (39) the exterior circular column bottom in the mechanical interlocking (3) is provided with several righting strips (78).
3. novel multithread test device according to claim 1, it is characterized in that not establishing in the mechanical interlocking (3) time-delay valve (42) and valve nut (43), mandrel step (71) is made as certain-length, and external diameter is slightly less than tube inner chamber bottom (69) internal diameter outside the grease chamber, does not establish sealing thread (72).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02262940 CN2555398Y (en) | 2002-07-08 | 2002-07-08 | Novel multithread tester |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02262940 CN2555398Y (en) | 2002-07-08 | 2002-07-08 | Novel multithread tester |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2555398Y true CN2555398Y (en) | 2003-06-11 |
Family
ID=33729417
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 02262940 Expired - Lifetime CN2555398Y (en) | 2002-07-08 | 2002-07-08 | Novel multithread tester |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2555398Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1928321B (en) * | 2005-09-05 | 2011-10-05 | 大庆油田有限责任公司 | Method for down-hole laminated sampling and measuring device |
| CN102359370A (en) * | 2011-07-04 | 2012-02-22 | 中国石油化工股份有限公司 | Intelligent tester |
| CN117905395A (en) * | 2024-03-19 | 2024-04-19 | 中石化西南石油工程有限公司 | Multistage adjustable compensation expansion joint for test and use method thereof |
-
2002
- 2002-07-08 CN CN 02262940 patent/CN2555398Y/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1928321B (en) * | 2005-09-05 | 2011-10-05 | 大庆油田有限责任公司 | Method for down-hole laminated sampling and measuring device |
| CN102359370A (en) * | 2011-07-04 | 2012-02-22 | 中国石油化工股份有限公司 | Intelligent tester |
| CN117905395A (en) * | 2024-03-19 | 2024-04-19 | 中石化西南石油工程有限公司 | Multistage adjustable compensation expansion joint for test and use method thereof |
| CN117905395B (en) * | 2024-03-19 | 2024-06-04 | 中石化西南石油工程有限公司 | Multistage adjustable compensation expansion joint for test and use method thereof |
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Expiration termination date: 20120708 Granted publication date: 20030611 |