CN105625972A - Variable-diameter drift diameter gauge - Google Patents
Variable-diameter drift diameter gauge Download PDFInfo
- Publication number
- CN105625972A CN105625972A CN201610193876.1A CN201610193876A CN105625972A CN 105625972 A CN105625972 A CN 105625972A CN 201610193876 A CN201610193876 A CN 201610193876A CN 105625972 A CN105625972 A CN 105625972A
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- Prior art keywords
- mandrel
- spring
- gauge
- drift diameter
- diameter gauge
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- 239000003381 stabilizer Substances 0.000 claims abstract description 15
- 238000007789 sealing Methods 0.000 claims description 8
- 230000015572 biosynthetic process Effects 0.000 claims description 3
- 238000009434 installation Methods 0.000 claims description 2
- 238000000034 method Methods 0.000 abstract description 12
- 238000005086 pumping Methods 0.000 abstract description 6
- 230000000903 blocking effect Effects 0.000 abstract 1
- 238000005553 drilling Methods 0.000 description 27
- 230000000694 effects Effects 0.000 description 9
- 210000002445 nipple Anatomy 0.000 description 8
- 238000011084 recovery Methods 0.000 description 7
- 238000007790 scraping Methods 0.000 description 6
- 230000008014 freezing Effects 0.000 description 5
- 238000007710 freezing Methods 0.000 description 5
- 239000004576 sand Substances 0.000 description 4
- 239000012530 fluid Substances 0.000 description 3
- 239000007788 liquid Substances 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 2
- 238000004140 cleaning Methods 0.000 description 2
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 230000001788 irregular Effects 0.000 description 2
- 239000011780 sodium chloride Substances 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000003628 erosive effect Effects 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 239000003129 oil well Substances 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B31/00—Fishing for or freeing objects in boreholes or wells
- E21B31/107—Fishing for or freeing objects in boreholes or wells using impact means for releasing stuck parts, e.g. jars
- E21B31/113—Fishing for or freeing objects in boreholes or wells using impact means for releasing stuck parts, e.g. jars hydraulically-operated
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Marine Sciences & Fisheries (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Earth Drilling (AREA)
Abstract
The invention belongs to the technical field of downhole tools, and particularly relates to a variable-diameter drift diameter gauge. The variable-diameter drift diameter gauge comprises a body and a mandrel arranged in the body; the outer surface of the body is of a spiral arris structure, and spiral arrises are evenly provided with multiple sets of telescopic heads in the circumferential direction; the upper portion of the mandrel is sleeved with a spring and a spring seat, the lower portion of the mandrel is provided with a balancing piston, the middle of the mandrel is provided with multiple sets of annular boss structures, and the positions of the telescopic heads correspond to those of the annular bosses one to one; a spring stop pin, an oil filling plug and an anti-channeling pin are installed in spiral grooves formed in the body respectively, and the body, the mandrel, the spring stop pin, the telescopic heads, the oil filling plug and the balancing piston form a seal cavity in an enclosing mode. Before pumping is started, the telescopic heads are in an installed state and are closely attached to the annular bosses, once the drift diameter gauge is blocked or clamped, the telescopic heads can be retracted through pumping starting on the ground, the drift diameter gauge is not clamped, and then a drill column is rotated to break the blocking points on the well wall through a fixed type stabilizer. The variable-diameter drift diameter gauge is especially suitable for a vertical well section, and the working efficiency of the drafting process is greatly improved.
Description
Technical field
The invention belongs to technical field of tools under oil well, it is specifically related to a kind of variable diameter drift diameter gauge.
Background technology
The main purpose of drifting operation checks that whether pit shaft is unimpeded, and for entering various subsurface tool under smoothly, instrument is prepared, and is a kind of easy, pit shaft detection method efficiently.
In petroleum drilling, borehole operation process, well logging, running casing, lower instrument advance work well operations time, due to the appearance of the situations such as well track is irregular, saline bed undergauge, easily there is meeting resistance in decentralization process, meets card equivalent risk in conventional drifting make-up of string, even cause bigger down-hole accident, reduce production efficiency.
Conventional drifting instrument is drift diameter gauge, drift diameter gauge is the special tool for detecting downhole tubular thing logical footpath size, mainly for detection of the logical footpath size whether conformance with standard in hole in sleeve pipe, oil pipe, drilling rod etc., it is the testing tool that borehole operation is commonly used, point run through casing size rule and oil pipe, the big class of drilling rod drift diameter gauge two.
Such as patent application CN203769698U, drilling tool drift diameter device is used under disclosing a kind of deep well, comprise fixing pipe nipple, the recovery seat being arranged in fixing pipe nipple and drift diameter gauge, sealed by sealing-ring between described fixing pipe nipple and recovery seat, described drift diameter gauge is axially shaped with and runs through circulation pore, described drift diameter gauge sidewall is shaped with sidewall circulation through hole, described drift diameter gauge one end is provided with projective table type fishing head, the other end at drift diameter gauge is shaped with the outer chamfering scraping body being convenient to reclaim, described recovery seat upper end is shaped with the interior chamfering scraping body that chamfering scraping body outer with drift diameter gauge coordinates.
Make-up of string before the logical footpath operation of deepwater drilling, is first connected recovery pipe nipple with the make-up of string foot in logical footpath that needs entering well, and fixing pipe nipple is threaded with top drilling tool, lower drilling tool by top drilling rod button, bottom drilling rod button; Before needing the construction operation in the logical footpath of drilling tool to pull out of hole for the last time, throwing in drift diameter gauge from well head in drilling tool, drift diameter gauge is by drilling tool internal diameter, and mud can from the space circulation in drift diameter gauge axial circulation hole and drift diameter gauge and drilling well internal diameter annular space, shaft bottom circulation can not be affected, disposable logical full drilling tool.
When drift diameter gauge passes to bottom drilling tool, drift diameter gauge drops on and reclaims on pipe nipple, reclaims the chamfering scraping body outer with drift diameter gauge of the interior chamfering scraping body on seat and coordinates recovery; Described recovery seat realizes sealing by sealing-ring and fixing pipe nipple, and mud can only circulate from the space in drift diameter gauge axial circulation hole, can not affect shaft bottom circulation, and such drift diameter gauge can together play out well head with recovery pipe nipple, meets the requirement that pulls out of hole normally.
Patent application CN103556968A, disclose a kind of once full well drill string drift diameter gauge, comprise the drift diameter gauge main body of cylinder shape, tether connecting joint, wireline and connecting joint anchor, wherein, described drift diameter gauge main body 1 internal diameter is 0.7-0.8 with the ratio d/D of external diameter, to ensure wall thickness and the intensity of drift diameter gauge, it is made not easily to damage, simultaneously, it has the perforation of its upper and lower end face through, make drift diameter gauge in dropping process in drill string liquid can pass through from drift diameter gauge inside, improve the falling velocity of drift diameter gauge, in addition, the lower end of drift diameter gauge main body is provided with the chamfering scraping body that angle of inclination is 45 ��, ensure that drift diameter gauge is descending smoothly in drill string, and it is not easy in drilling rod to stop, finally, the connecting joint anchor become with fixing horizontal stripe cross cross weld by fixing taeniae is welded on drift diameter gauge main body upper end, the upper surface of this fixing taeniae and the upper surface of fixing horizontal stripe all upper section with drift diameter gauge main body put down together, tether connecting joint is welded on this connecting joint anchor center, and one end of wireline 5 ties up on described tether connecting joint, the external diameter of this wireline is 1.5mm, its length ratio long 2m of post drilling rod, make enough length can wireline hold and drift diameter gauge is taken out.
Before the perforation job and sand control treatment of completion phase, after sleeve pipe pipe cleaning, clean-out service terminate, hold the wireline of drift diameter gauge main body upper end, in drill string, throw in drill string drift diameter gauge from rig floor, slowly wireline is put into, after wireline enters drilling rod completely, wireline, for stretching state, now, unclamps the hand leading wireline, drift diameter gauge freely falls, disposable logical full drilling tool. When passing to bottom drilling tool, drift diameter gauge drops on drill bit, when drill string rises out, drift diameter gauge can rise out with drill bit, when last post drilling rod is sitting in turntable surface, it is possible to hold wireline and drift diameter gauge is taken out, complete logical footpath, making the time of saving dismounting drill bit, follow-up perforation and sand control treatment drill string can lead to footpath again.
Patent application CN203321397U, discloses a kind of anti-card drift size gauge tool of slide block type, is made up of top connection, drift size gauge tool body, the first pin, tack bolt, webge slot, the first slide block, the 2nd slide block, discharge opeing hole and the 2nd pin. Having centre hole on body, one is processed in drift size gauge tool body and top connection, and top connection has oil pipe internal thread to buckle, it is possible to be connected with oil pipe. Drift size gauge tool body and the 2nd slide block there is webge groove, first slide block there is webge slot, the webge groove of drift size gauge tool body and the webge slot of the first slide block are connected, the webge groove of the 2nd slide block and the webge slot of the first slide block are connected, first slide block connects drift size gauge tool body by tack bolt, having the first pin to be connected between first slide block with drift size gauge tool body, the first slide block has discharge opeing hole, has the 2nd pin to be connected between the 2nd slide block and the first slide block.
When drift size gauge tool enters well normal operation, drift size gauge tool body, the first slide block, the 2nd slide block are combined into a right cylinder, and the effect of tack bolt is the disengaging stoping drift size gauge tool body and the first slide block. When drift size gauge tool meets card, by upper lifting pipe post, cutting off pin and pin, the first slide block is relative to drift size gauge tool body slide downward, and the 2nd slide block is relative to the first slide block slide downward; Further, the first slide block and the 2nd slide block are also radially sliding doing in axial sliding while, thus make the overall undergauge of drift size gauge tool, release bit freezing.
Patent application CN202882825U, discloses a kind low water resistance hole gauge, comprises top connection and body; The lower end of top connection connects body, and this external surface has three spiral slots, and the inclination angle of spiral slot is 45 ��, and groove depth is 12mm; Spiral slot is longitudinally provided with skiving blade. The lower end of body is designed with internal thread.
During use, portion's connected pipes on the invention, when carrying out drifting operation, in well, liquid or viscous crude circulate by the spiral slot on body, and this just substantially reduces resistance when removing drifting tubing string, avoids excessive exciting pressure. When using the present invention's small-scale sand washing, sand cleaning fluid flows by spiral slot, and circulation area increases, and liquid flowing resistance diminishes, and reduces the risk of bit freezing. In addition owing to spiral slot longitudinally has skiving blade, it is possible to strengthen the shaving effect to sleeve pipe.
Drift size gauge tool recited above, when in use, is generally connected with weighted lever, to increase drift size gauge tool quality, it is to increase scrape the ability of dirt. In operation, drift size gauge tool is put into gas well pit shaft, under rope control, rely on self gravitation at the uniform velocity to fall, strike off tubing wall attachment dirt, dredging gas well oil pipe space.
But in implementation process, the impurity such as greasy dirt, dirt stain easily gathers, is blocked in the annular space of oil pipe and drift size gauge tool, reduces gas actual internal area, increases drift size gauge tool whereabouts resistance, jam phenomenon occurs. And those above-mentioned patents are for this problem, can not effectively solving, easily there is meeting resistance in decentralization process, meets card equivalent risk in conventional drifting make-up of string, even causes bigger down-hole accident, reduces production efficiency.
Summary of the invention
It is an object of the invention to overcome conventional drifting make-up of string in prior art in decentralization process, easily occur meeting resistance, meet the problems such as card, provide a kind of variable diameter drift diameter gauge, it is connected in drifting make-up of string fixing-stable device front end, after first variable diameter drift diameter gauge in drilling tool decentralization process is met resistance or is met card, open pump circulation, variable diameter drift diameter gauge unfreezing, rotates drilling tool and utilizes fixed stabilizer to carry out expanding a stroke borehole wall, abolishes shoulder, eliminates borehole wall resistance point, prevent whole drilling tool bit freezing.
The technical scheme of the present invention there is provided a kind of variable diameter drift diameter gauge, comprise body and it is placed in the mandrel in the middle part of body, it is characterized in that: this described external surface is spiral rib structure, spiral rib is along the circumferential direction evenly arranged and has organized telescopic head more, described mandrel top cover has spring and spring support, the bottom of mandrel is provided with equalizing piston, the middle part of mandrel is provided with many group annular boss structures, often organize telescopic head corresponding one by one with the position of annular boss, body has also been offered spiral slot, spring backing pin is installed in spiral slot from top to bottom successively, the stifled head of oiling and anti-channeling pin, the spring support being socketed on mandrel top is fixed on described spring backing pin, the equalizing piston being socketed on mandrel bottom is stifled between head and anti-channeling pin in described oiling, described body, mandrel, spring backing pin, telescopic head, head is blocked up in oiling, equalizing piston surrounds formation annular seal space.
The top of described mandrel is provided with jump ring, is provided with nozzle between jump ring and spring.
Anti-channeling cap is equipped with in the bottom of described mandrel, and anti-channeling cap is positioned at the bottom of anti-channeling pin.
Mandrel, spring, spring support, anti-channeling cap 0, telescopic head are fixed on installment state by described spring backing pin, anti-channeling pin, and spring is in pre-tight compressed state.
Described when being in installment state, often organize telescopic head and fit tightly with corresponding annular boss.
Described annular boss top is provided with tapering, and the angle of the conical surface and axis is 0 ��-0 ��.
Hydraulic efficiency oil 0 it is full of in described annular seal space.
Between described mandrel and body, between spring backing pin and body, between telescopic head and body, oiling is stifled between head and body, between equalizing piston and body, between equalizing piston and mandrel, is provided with O RunddichtringO between anti-channeling pin and body.
Described mandrel top and the sealing cross-sectional area of body are greater than the sealing cross-sectional area of described equalizing piston and body.
Described telescopic head is connected to fixed stabilizer front end, telescopic head stretch out after external diameter identical with fixed stabilizer external diameter.
The useful effect of the present invention:
1, present configuration is simple, dependable performance, and body adopts one-piece construction, ensure that the intensity of body, thus ensure that the security of whole make-up of string.
2, the middle part of mandrel of the present invention is provided with many group annular boss structures, and along body shaft to being evenly arranged, when being in installment state, telescopic head and this annular boss of core fit tightly, what ensure that between the present invention with the borehole wall effective contacts, enough annular space open area, in turn ensure that the present invention can carry out reducing.
3, the telescopic head of the present invention is connected to fixed stabilizer front end, telescopic head stretch out after external diameter identical with the external diameter of fixed stabilizer, if any resistance point in drilling tool decentralization process, the present invention first and hinders point cantact, after pump is driven on ground, telescopic head with the effect of wall contact force under retract, rotate drill string, abolish resistance point, avoid whole make-up of string bit freezing. The present invention after the termination of pumping of ground, mandrel act in spring under on row, and eject telescopic head reset, making the present invention return to installment state, the present invention can repeat out, termination of pumping action, carries out front " visiting resistance ", after finding resistance point, fixed stabilizer is utilized to abolish resistance point.
5, the spring of the present invention can the spring power needed for telescopic head reset be changed, and the nozzle of the present invention can be changed according to the size of circulation discharge capacity and required pressure reduction.
6, the present invention is according to the situation of abrasion, erosion degree, can reuse.
Below with reference to accompanying drawing, the present invention is described in further details.
Accompanying drawing explanation
Fig. 1 is present configuration schematic diagram.
Description of reference numerals: 1-body, 2-jump ring, 3-nozzle, 4-O RunddichtringO, 5-spring, 6-mandrel, 7-spring support, 8-spring backing pin, 9-spiral slot, 10-hydraulic efficiency oil, 11-telescopic head, 12-annular boss, head is blocked up in 13-oiling, 14-equalizing piston, 15-anti-channeling pin, 16-anti-channeling cap.
Embodiment
Embodiment 1:
In drifting operation process, due to the appearance of the situations such as well track is irregular, saline bed undergauge, easily there is meeting resistance in decentralization process, meets card equivalent risk in conventional drifting make-up of string, even causes bigger down-hole accident, production efficiency reduces, and affects gas well and normally produces.
For above-mentioned problem, the present invention provides a kind of variable diameter drift diameter gauge, as shown in Figure 1, comprise body 1 and it is placed in the mandrel 6 in the middle part of body 1, it is characterized in that: described body 1 outside surface is spiral rib structure, spiral rib has along the circumferential direction been evenly arranged many group telescopic heads 11, described mandrel 6 top cover has spring 5 and spring support 7, the bottom of mandrel 6 is provided with equalizing piston 14, the middle part of mandrel 6 is provided with many group annular boss 12 structures, often organize telescopic head 11 corresponding one by one with the position of annular boss 12, body 1 has also been offered spiral slot 9, in spiral slot 9 from top to bottom, spring backing pin 8 is installed successively, oiling stifled 13 and anti-channeling pin 15, the spring support 7 being socketed on mandrel 6 top is fixed on described spring backing pin 8, the equalizing piston 14 being socketed on mandrel 6 bottom is stifled of described oiling between 13 and anti-channeling pin 15, described body 1, mandrel 6, spring backing pin 8, telescopic head 11, oiling stifled 13, equalizing piston 14 surrounds formation annular seal space, hydraulic efficiency oil 10 it is full of in annular seal space,
The top of described mandrel 6 is provided with jump ring 2, is provided with nozzle 3 between jump ring 2 and spring 5.
When carrying out drifting operation, telescopic head 11 of the present invention is connected to fixed stabilizer front end, telescopic head 11 stretch out after external diameter identical with fixed stabilizer external diameter, in drifting going down process, if any resistance point, the present invention can meet prior to fixed stabilizer and resistance point, and ground personnel can judge to meet resistance situation in time, can prevent the generation of lock of tool drilling.
After finding resistance point, pump is driven by ground, after drilling fluid enters mandrel 6 by nozzle 3, because the sealing cross-sectional area at described mandrel 6 top and body 1 is greater than the sealing cross-sectional area of described equalizing piston 17 with body 1, mandrel about 6 two ends are impelled to form a pressure reduction, this pressure reduction impels mandrel 6 descending and compression spring 5, squeezed fluid force feed 10 promotes equalizing piston 17 descending simultaneously, telescopic head 11 and mandrel 6 disengage, telescopic head 11 is retracted under the effect of the borehole wall, the present invention and borehole wall resistance point disengage, variable diameter drift diameter gauge unfreezing, rotate and slowly transfer drill string, fixed stabilizer is utilized to be abolished by borehole wall resistance point. resistance point carries out abolishing the termination of pumping of rear ground, mandrel 6 under the effect of spring 5 on row, eject telescopic head 11, meanwhile, equalizing piston 17 is upper row also, and the present invention returns to original state.
The present invention can repeat out, termination of pumping action, carries out front " visiting resistance ", it has been found that after resistance point, utilizes fixed stabilizer to abolish resistance point, avoids whole make-up of string bit freezing, it is achieved the object of sustainable drifting operation.
Embodiment 2:
On the basis of embodiment 1, the present invention is equipped with many group annular boss 12 structures in the middle part of described mandrel 6, annular boss 12 structure is along body shaft to being evenly arranged, annular boss 12 top is provided with tapering, the angle of the conical surface and axis is 20 ��-30 ��, anti-channeling cap 16 is equipped with in the bottom of mandrel 6, anti-channeling cap 16 is positioned at the bottom of anti-channeling pin 15, described spring backing pin 8, anti-channeling pin 18 is by mandrel 6, spring 5, spring support 7, anti-channeling cap 20, telescopic head 11 is fixed on installment state, and spring 5 is in pre-tight compressed state, when being in installment state, often organize telescopic head 11 to fit tightly with corresponding annular boss 12, telescopic head 11 is in self-locking state under radial force effect, what ensure that between the present invention with the borehole wall effective contacts, enough annular space open area, descending compression spring 5 under the differential pressure action that mandrel 6 is formed at upper and lower two ends, when making spring 5 be in compressed state, telescopic head 11 and mandrel 6 disengage thus ensure that the present invention can carry out reducing.
During drifting operation, telescopic head 11 of the present invention meets with the borehole wall or resistance point, the reactive force produced makes annular boss in the middle part of telescopic head 11 and mandrel 6 be in self-locking state, telescopic head 11 is not retracted, the present invention is made to have under the outward force effect of footpath, telescopic head 11 stretch out after external diameter still consistent with fixed stabilizer external diameter, play the object of " visit resistance ".
Embodiment 3:
On the basis of embodiment 1, between described mandrel 6 and body 1, between spring backing pin 8 and body 1, between telescopic head 11 and body 1, stifled of oiling is between 18 and body, between equalizing piston 14 and body, between equalizing piston 14 and mandrel 6, between anti-channeling pin 15 and body 1, it is provided with O RunddichtringO 4. It is good that this kind of sealing means of the present invention not only seals effect, and is convenient to installation and the dismounting of each component. Spring 5 of the present invention can be changed according to the spring power that telescopic head 11 resets required, and nozzle 3 of the present invention can be changed according to the size of circulation discharge capacity and required pressure reduction.
More than enumerating is only the illustration to the present invention, does not form the restriction to protection scope of the present invention, and every design same or similar with the present invention all belongs within protection scope of the present invention.
Claims (10)
1. a variable diameter drift diameter gauge, comprise body (1) and it is placed in the mandrel (6) at body (1) middle part, it is characterized in that: described body (1) outside surface is spiral rib structure, spiral rib is along the circumferential direction evenly arranged and has organized telescopic head (11) more, described mandrel (6) top cover has spring (5) and spring support (7), the bottom of mandrel (6) is provided with equalizing piston (14), the middle part of mandrel (6) is provided with organizes annular boss (12) structure more, often organize telescopic head (11) corresponding one by one with the position of annular boss (12), body (1) has also been offered spiral slot (9), and one-step installation has spring backing pin (8) from top to bottom, head (13) and anti-channeling pin (15) are blocked up in oiling, the spring support (7) being socketed on mandrel (6) top is fixed on described spring backing pin (8), it is stifled between head (13) and anti-channeling pin (15) that the equalizing piston (14) being socketed on mandrel (6) bottom is positioned at described oiling, described body (1), mandrel (6), spring backing pin (8), telescopic head (11), head (13) is blocked up in oiling, equalizing piston (14) surrounds formation annular seal space.
2. a kind of variable diameter drift diameter gauge as claimed in claim 1, it is characterised in that: the top of described mandrel (6) is provided with jump ring (2), is provided with nozzle (3) between jump ring (2) and spring (5).
3. a kind of variable diameter drift diameter gauge as claimed in claim 1, it is characterised in that: anti-channeling cap (16) is equipped with in the bottom of described mandrel (6), and anti-channeling cap (16) is positioned at the bottom of anti-channeling pin (15).
4. a kind of variable diameter drift diameter gauge as claimed in claim 1, it is characterized in that: mandrel (6), spring (5), spring support (7), anti-channeling cap (20), telescopic head (11) are fixed on installment state by described spring backing pin (8), anti-channeling pin (18), and spring (5) is in pre-tight compressed state.
5. variable diameter drift diameter gauge as claimed in claim 4 a kind of, it is characterised in that: described when being in installment state, often organize telescopic head (11) and fit tightly with corresponding annular boss (12).
6. a kind of variable diameter drift diameter gauge as claimed in claim 1, it is characterised in that: described annular boss (12) top is provided with tapering, and the angle of the conical surface and axis is 20 ��-30 ��.
7. a kind of variable diameter drift diameter gauge as claimed in claim 1, it is characterised in that: it is full of hydraulic efficiency oil (10) in described annular seal space.
8. a kind of variable diameter drift diameter gauge as claimed in claim 1, it is characterized in that: between described mandrel (6) and body (1), between spring backing pin (8) and body (1), between telescopic head (11) and body (1), oiling is blocked up between head (18) and body, between equalizing piston (14) and body, between equalizing piston (14) and mandrel (6), between anti-channeling pin (15) and body (1), it is provided with O RunddichtringO (4).
9. a kind of variable diameter drift diameter gauge as claimed in claim 1, it is characterised in that: described mandrel (6) top and the sealing cross-sectional area of body (1) are greater than the sealing cross-sectional area of described equalizing piston (14) with body (1).
10. variable diameter drift diameter gauge as claimed in claim 1 a kind of, it is characterised in that: described telescopic head (11) is connected to fixed stabilizer front end, telescopic head (11) stretch out after external diameter identical with fixed stabilizer external diameter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610193876.1A CN105625972B (en) | 2016-03-31 | 2016-03-31 | A kind of reducing type jack rabbit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610193876.1A CN105625972B (en) | 2016-03-31 | 2016-03-31 | A kind of reducing type jack rabbit |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105625972A true CN105625972A (en) | 2016-06-01 |
| CN105625972B CN105625972B (en) | 2018-09-04 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610193876.1A Active CN105625972B (en) | 2016-03-31 | 2016-03-31 | A kind of reducing type jack rabbit |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106595457A (en) * | 2016-12-08 | 2017-04-26 | 辽宁石油化工大学 | Oil pipe automatic dredging device and application method thereof |
| CN108240192A (en) * | 2016-12-26 | 2018-07-03 | 中国石油天然气股份有限公司 | Variable-diameter drift size gauge tool |
| CN110552648A (en) * | 2018-05-31 | 2019-12-10 | 中国石油化工股份有限公司 | throw-in type drill rod drift diameter gauge and use method thereof |
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| CN204827314U (en) * | 2015-07-23 | 2015-12-02 | 中国石油化工股份有限公司 | Borehole operation leads to integrated instrument of scraping |
| CN205477488U (en) * | 2016-03-31 | 2016-08-17 | 中国石油集团川庆钻探工程有限公司工程技术研究院 | Diameter -variable jack rabbit |
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|---|---|---|---|---|
| CN2417285Y (en) * | 2000-01-18 | 2001-01-31 | 季细星 | Hydraulic reducing stabilizer |
| US20130319653A1 (en) * | 2011-11-23 | 2013-12-05 | Otkrytoe Aktsionernoe Obschestvo "Tatneft" Im. V.D.Shashina | Wedge deflecting device for sidetracking |
| CN203321397U (en) * | 2013-06-05 | 2013-12-04 | 中国石油天然气股份有限公司 | Sliding block type anti-blocking drift size gauge tool |
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| CN205477488U (en) * | 2016-03-31 | 2016-08-17 | 中国石油集团川庆钻探工程有限公司工程技术研究院 | Diameter -variable jack rabbit |
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| CN108240192A (en) * | 2016-12-26 | 2018-07-03 | 中国石油天然气股份有限公司 | Variable-diameter drift size gauge tool |
| CN108240192B (en) * | 2016-12-26 | 2020-07-10 | 中国石油天然气股份有限公司 | Variable-diameter drift size gauge tool |
| CN110552648A (en) * | 2018-05-31 | 2019-12-10 | 中国石油化工股份有限公司 | throw-in type drill rod drift diameter gauge and use method thereof |
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