CN102330550B - Drifting tubular column carrying bidirectional-moving caliper for horizontal open-hole wells - Google Patents
Drifting tubular column carrying bidirectional-moving caliper for horizontal open-hole wells Download PDFInfo
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- CN102330550B CN102330550B CN201110314953.1A CN201110314953A CN102330550B CN 102330550 B CN102330550 B CN 102330550B CN 201110314953 A CN201110314953 A CN 201110314953A CN 102330550 B CN102330550 B CN 102330550B
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- potentiometer
- gage beam
- push rod
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- spring
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Abstract
The invention relates to a drifting tubular column carrying bidirectional-moving caliper for horizontal open-hole wells, which comprises an outer sleeve, a caliper body, a measuring arm, an auxiliary measuring arm, a potentiometer sliding mechanism, a measuring-arm sliding mechanism, a measuring-arm actuated spring lamination and a measuring-arm trigger mechanism. Under the condition of being carried by a drifting tubular column, with the lifting and descending of the drifting tubular column, the caliper provided by the invention can be subjected to bidirectional movement on horizontal open-hole well sections, and can be triggered underground; and the mechanical structure of the invention also can prevent key components such as well-diameter measuring arms, measuring-arm push rods and potentiometers and the like from damage, thereby improving the underground operating reliability of the caliper and prolonging the service life of the instrument. The caliper provided by the invention has a bidirectional movement capacity, and the structure of the caliper effectively protects the measuring arm and internal components, therefore, the caliper can be widely applied to the diameter measurement of horizontal open-hole wells.
Description
Technical field
The present invention relates to a kind of drifting tubular column carrying bidirectional-moving caliper for horizontal open-hole wells, belong to oil reservoir logging technical field.
Background technology
Along with the development of nearest 2 years horizontal well bore hole oil recovery techniques, its net horizontal section changes barefoot completion into by cased hole completion, and its horizontal segment hole diameter is complicated space variable-diameter structure.In open hole well oil recovery process, need to be lowered to Open-Hole Section the multiple downhole tools such as packer, need to accurately know the open hole well gauge structure at optimum position and the instrument place that descends of descended instrument.Therefore, the test of Open-Hole Section hole diameter becomes an essential job.Due to traditional coiled tubing carrying mode somewhat expensive, one-time investment is up to several ten million yuan, so be badly in need of the new equipment that exploitation is suitable for the test of open hole well hole diameter.The present invention proposes to utilize this free resource of drifting tubing string in drifting operation process to carry out the task of carrying of bore hole caliper; yet; drifting tubing string also has the action of transferring upper in putting forward process; need the gage beam launching to there is the kinetics compliance moving up and down; need to protect gage beam and associated components; needing that invention is a kind of badly can either be at horizontal bare hole well section way moving, again can protection arm and the caliper of associated components.
Summary of the invention
The object of the invention is to the defect existing for prior art, a kind of drifting tubular column carrying bidirectional-moving caliper for horizontal open-hole wells is provided.The present invention can utilize in drifting process drifting tubing string transfer and on carry and carry out hole diameter test, adapt to drifting tubing string and frequently move up and down, can solve and rely on coiled tubing to carry to carry out the higher problem of horizontal bare hole hole diameter testing cost.The present invention is directed to the caliper work characteristics that drifting tubing string carries; having invented can either be at horizontal bare hole well section way moving; again can protection arm and the caliper of associated components, successfully solved drifting tubing string and carried caliper and carry out the technical barrier existing in horizontal well bore hole hole diameter measuring process.
This caliper mainly comprises that outer sleeve, body, gage beam, subsidiary arm, potentiometer slide mechanism, gage beam slide mechanism, gage beam start spring leaf, gage beam trigger mechanism.The present invention can be in the situation that drifting tubing string carries; with rising of drifting tubing string, putting also can be at horizontal bare hole well section way moving; frame for movement of the present invention also can protect the critical components such as caliper logging arm, gage beam push rod and potentiometer to be without prejudice; improve the reliability of caliper underground work, extend the instrument life-span.This drifting tubular column carrying bidirectional-moving caliper for horizontal open-hole wells not only has way moving ability, and its structure effectively protected gage beam and internal part, can be widely used in the caliper logging of horizontal well bore hole.
According to foregoing invention design, the present invention adopts following technical proposals:
A kind of drifting tubular column carrying bidirectional-moving caliper for horizontal open-hole wells, comprise that outer sleeve, body, gage beam, subsidiary arm, gage beam start spring leaf, slip protection mechanism, gage beam pre-tightening mechanism, trigger mechanism, is characterized in that: described outer sleeve and body two ends are connected by bolt; Described slip protection mechanism slides in described body interior; The lower end of described gage beam upper end and described slip protection mechanism is hinged by pin, and the lower end of described subsidiary Bei upper end and described gage beam is hinged by pin; Described gage beam starts spring leaf and is bolted on described gage beam inner side, for starting gage beam, prevents that gage beam is stuck; Described gage beam pre-tightening mechanism upper end and described subsidiary arm lower end are hinged by pin, and described gage beam pre-tightening mechanism opposite side is connected with trigger mechanism, and described gage beam pre-tightening mechanism is arranged on described body interior; Described trigger mechanism is fixed on body one end for triggering gage beam and subsidiary arm opens.
Described slip protection mechanism is comprised of potentiometer movable sleeving, potentiometer power supply and storage area, potentiometer movable sleeving spring lever, the protection spring that slides, potentiometer movable sleeving termination.Described potentiometer movable sleeving inside comprises potentiometer pusher, push rod sliding sleeve, push rod spring, potentiometer holder, potentiometer, potentiometer terminal stud, sealing ring, connection leather bag, described push rod spring is arranged between described potentiometer pusher and push rod sliding sleeve, described potentiometer pusher is close to described gage beam under described push rod spring effect, and described potentiometer pusher and described pusher slide inner room have sealing ring; Described push rod sliding sleeve is connected by being connected leather bag with described potentiometer holder, and described potentiometer is connected by bolt and potentiometer pusher, and described potentiometer terminal stud and potentiometer holder are connected; Described potentiometer power supply and storage area and potentiometer movable sleeving are bolted, and described potentiometer power supply and storage area are stored holder, potentiometer power slot and storage area draw-in groove lid by potentiometer and formed; Described potentiometer movable sleeving spring lever one end is connected by bolt and described potentiometer power supply and storage area; the described potentiometer movable sleeving spring lever other end and described potentiometer movable sleeving termination are connected, and described slip protection spring is housed between described potentiometer movable sleeving spring lever and body.
Described gage beam pre-tightening mechanism is comprised of gage beam push rod, gage beam push rod spring block, preloading spring, gage beam push rod upper cover, described gage beam push rod and gage beam push rod spring block are connected, between described gage beam push rod spring block and described body, described preloading spring is installed, described gage beam push rod upper cover is connected by bolt and described body.
Described drifting tubular column carrying bidirectional-moving caliper for horizontal open-hole wells contains gage beam described in quadruplet, subsidiary arm, gage beam and starts spring leaf, slip protection mechanism, gage beam pre-tightening mechanism, and distribute along described body even circumferential.
Described trigger mechanism, comprise trigger body, guiding valve, guiding valve sealing ring, suppress shear pin, suppress ball, suppress ball seat, suppress scotch, the seat of blocking, block; Described triggering body is bolted on outer sleeve, and there is cavity at described triggering body center; Described guiding valve is arranged on described triggering body cavity inside, has described guiding valve sealing ring sealing, and fix by the described shear pin of suppressing between described guiding valve and triggering body; Slide-valve surface described in ball seat is suppressed on described guiding valve top described in being equipped with respectively one section of groove up and down.
The described scotch of suppressing is fixed by a pin on described triggering body, described in suppress scotch head and withstand guiding valve lower recess compared with shallow portion; On described triggering body, be provided with suppress body upper cover and described in suppress scotch upper cover, described suppressing suppressed scotch described in scotch upper cover restriction and rotated counterclockwise, described triggering body interior space with described in suppress body upper cover, described in suppress scotch upper cover and form slurry channel; The described seat of blocking is arranged on described triggering body by screw, described in block between described guiding valve and gage beam push rod, and the seat of blocking described in being arranged on is upper, utilizes described in described guiding valve external surface general and blocks and be pressed in described gage beam putting back-end groove.
The present invention compared with prior art, has following apparent outstanding substantive distinguishing features and remarkable advantage:
Drifting tubular column carrying bidirectional-moving caliper for horizontal open-hole wells is owing to having taked such scheme; can utilize drifting tubing string to complete the task of carrying; can trigger in down-hole; adapt to the frequent landing campaign of tubing string; can the in the situation that of horizontal bare hole well section way moving, resist the borehole wall and impact and extruding, the critical components such as protection caliper logging arm, gage beam push rod, potentiometer are without prejudice; improve the reliability of caliper underground work, extend the instrument life-span.
accompanying drawing explanation
Fig. 1 drifting tubular column carrying bidirectional-moving caliper for horizontal open-hole wells Zhu Shi mechanism sectional view.
Fig. 2 drifting tubular column carrying bidirectional-moving caliper for horizontal open-hole wells is analysed and observe partial enlarged drawing.
Fig. 3 drifting tubular column carrying bidirectional-moving caliper for horizontal open-hole wells flip flop equipment does not trigger state.
Fig. 4 drifting tubular column carrying bidirectional-moving caliper for horizontal open-hole wells flip flop equipment triggers state.
the specific embodiment
The preferred embodiments of the present invention accompanying drawings is as follows:
Embodiment mono-:
Referring to Fig. 1 ~ 2, this drifting tubular column carrying bidirectional-moving caliper for horizontal open-hole wells mainly comprises that outer sleeve 1, body 2, gage beam 11, subsidiary arm 13, gage beam start spring leaf 12, slip protection mechanism, gage beam pre-tightening mechanism, trigger mechanism 19, is characterized in that: described outer sleeve 1 is connected by bolt with body 2 two ends; Described slip protection mechanism is in described body 1 slides within; The lower end of described gage beam 11 upper ends and described slip protection mechanism is hinged by pin, and described subsidiary Bei13 upper end and described gage beam 11 lower end are hinged by pin; The upper end of subsidiary Bei13 lower end and described gage beam pre-tightening mechanism is hinged by pin; Described gage beam starts spring leaf 12 and is bolted on described gage beam 11 inner sides, for starting gage beam 11, prevents that gage beam 11 is stuck; The lower end of described gage beam pre-tightening mechanism is connected with described trigger mechanism 19, and described gage beam pre-tightening mechanism is arranged on described body 2 inside; Described trigger mechanism 19 is fixed on described body 2 one end for triggering gage beam 11 and subsidiary arm 13 opens.
Embodiment bis-: the present embodiment and embodiment mono-are basic identical, and special feature is:
Referring to Fig. 1 ~ 2, the protection mechanism that slides described in this drifting tubular column carrying bidirectional-moving caliper for horizontal open-hole wells is comprised of potentiometer movable sleeving 21, potentiometer power supply and storage area 6, potentiometer movable sleeving spring lever 4, the protection spring 5 that slides, potentiometer movable sleeving termination 3.Described potentiometer movable sleeving 21 inside comprise potentiometer pusher 20, push rod sliding sleeve 28, push rod spring 27, potentiometer holder 23, potentiometer 24, potentiometer terminal stud 22, sealing ring 26, connect leather bag 25, described push rod spring 27 is arranged between described potentiometer pusher 20 and push rod sliding sleeve 28, described potentiometer pusher 20 is close to described gage beam 11 under described push rod spring 27 effects, and described potentiometer pusher 20 and 28 of described push rod sliding sleeves have sealing ring 26; Described push rod sliding sleeve 28 is connected by being connected leather bag 25 with described potentiometer holder 23, and described potentiometer 24 is connected by bolt and potentiometer pusher 20, and described potentiometer terminal stud 22 is connected with potentiometer holder 23; Described potentiometer power supply and storage area 6 are bolted with potentiometer movable sleeving 21, and described potentiometer power supply and storage area 6 are comprised of potentiometer storage holder 9, potentiometer power slot 8 and storage area draw-in groove lid 7; Described potentiometer movable sleeving spring lever 4 one end are connected by bolt and described potentiometer power supply and storage area 6; described potentiometer movable sleeving spring lever 4 other ends and described potentiometer movable sleeving termination 3 are connected, and described potentiometer movable sleeving spring lever 4 and 2 of bodies are equipped with described slip protection spring 5.
Embodiment tri-: the present embodiment and embodiment mono-are basic identical, and special feature is:
Referring to Fig. 1 ~ 2, described in this drifting tubular column carrying bidirectional-moving caliper for horizontal open-hole wells, gage beam pre-tightening mechanism is comprised of gage beam push rod 14, gage beam push rod spring block 15, preloading spring 17, gage beam push rod upper cover 16,18, described gage beam push rod 14 is connected with gage beam push rod spring block 15,2 of described gage beam push rod spring block 15 and described bodies are installed described preloading spring 17, and described gage beam push rod upper cover 16,18 is connected by bolt and described body 2.
Embodiment tetra-: the present embodiment and embodiment tri-are basic identical, and special feature is:
Referring to Fig. 1 ~ 2; described in this drifting tubular column carrying bidirectional-moving caliper for horizontal open-hole wells, drifting tubular column carrying bidirectional-moving caliper for horizontal open-hole wells contains gage beam 11 described in quadruplet, subsidiary arm 13, gage beam and starts spring leaf 12, slip protection mechanism, gage beam pre-tightening mechanism, and distribute along described body 2 even circumferentials.
Embodiment five:
Referring to Fig. 3 ~ 4, described in this drifting tubular column carrying bidirectional-moving caliper for horizontal open-hole wells trigger mechanism 19 comprise trigger body 36, guiding valve 31, guiding valve sealing ring 30, suppress shear pin 43, suppress ball 37, suppress ball seat 38, suppress scotch 33, block 40, the seat 39 of blocking; Described triggering body 36 is bolted on outer sleeve 1, and there is cavity at described triggering body 36 centers; Described guiding valve 31 is arranged on described triggering body 36 cavity insides, and described guiding valve 31 and 36 of bodies of triggering have described guiding valve sealing ring 30 sealings, and fixes by the described shear pin 43 of suppressing; Ball seat 38 is suppressed described in being equipped with in described guiding valve 31 tops, and described guiding valve 31 surfaces respectively have one section of groove up and down.
Embodiment six: the present embodiment and embodiment five are basic identical, and special feature is:
Referring to Fig. 3 ~ 4, suppress scotch 33 described in this drifting tubular column carrying bidirectional-moving caliper for horizontal open-hole wells and be fixed by a pin on described triggering body 36, described in suppress scotch 33 heads and withstand guiding valve 31 lower recess compared with shallow portion; On described triggering body 36, be provided with suppress body upper cover 32 and described in suppress scotch upper cover 34, described in suppress and suppress scotch 33 described in 34 restrictions of scotch upper cover and rotate counterclockwise; Described triggering body 36 internal voids with described in suppress body upper cover 32, described in suppress scotch upper cover 34 and form slurry channels 35; The described seat 39 of blocking is arranged on described triggering body 36 by screw, describedly block 40 between described guiding valve 31 and gage beam push rod 41, and described in being arranged on, block on seat 39, utilize described guiding valve 31 external surfaces will described in block and 40 be pressed in described gage beam push rod 41 rear end grooves.
The specific works process following (referring to Fig. 1 ~ Fig. 2) of this drifting tubular column carrying bidirectional-moving caliper for horizontal open-hole wells:
1, first the outer sleeve of drifting tubular column carrying bidirectional-moving caliper for horizontal open-hole wells 1 two ends are connected on tubing string, when tubing string is transferred to appropriate location, to suppress ball 37 and lose in triggering body 36 internal cavities, and suppress ball 37 and will under the effect of gravity, move to flip flop equipment place.Then inject mud, under the effect of mud, suppress ball 37 and will move to and suppress ball seat 38 places, seal 31 mouthfuls, guiding valve.
2, when increasing to, cuts off suppressing shear pin 43 mud pressure, guiding valve 31 will move to withstand and suppress scotch 33 under mud effect, suppressing scotch 33 motion under guiding valve 31 effect makes to suppress scotch 33 upper end juts and blocks guiding valve 31 grooves, guiding valve 31 stop motions; Due to the motion of guiding valve 31, block 40 moves in guiding valve 31 grooves in gage beam push rod 41 grooves, and then discharges gage beam push rod 41, and gage beam push rod 41 moves gage beam 11 is opened under the effect of spring force.After guiding valve 31 moves downward, mud will flow out by slurry channel 35, triggers end-of-job, and caliper test arm 11 is started working.
3, when hole diameter changes, gage beam 11 is followed well radius variations and is rotated, potentiometer pusher 30 is close to gage beam 11 under the effect of push rod spring 37, gage beam 11 passes to potentiometer 34 by well radius variations through potentiometer pusher 30, potentiometer power supply and storage area 6 are responsible for to potentiometer 34 power supplies, and the data that potentiometer 34 is gathered are stored.
4, drifting tubular column carrying bidirectional-moving caliper for horizontal open-hole wells is followed tubing string while moving upward, large if hole diameter becomes suddenly, gage beam 11 can utilize its contour structures smoothly by and gather hole diameter data, can not impact inside; When integral body moves downward; if hole diameter diminishes suddenly; the borehole wall can cause extruding and impact horizontal bare hole measuring arm of caliper 11; gage beam 11 is delivered to by extruding or impact force protection spring 5 places of sliding again; play the effect of the parts such as buffer protection gage beam 11 and potentiometer 34; so drifting tubular column carrying bidirectional-moving caliper for horizontal open-hole wells not only can be at horizontal bare hole well section way moving, the effectively parts such as protection arm 11 and potentiometer 34.
Claims (5)
1. a drifting tubular column carrying bidirectional-moving caliper for horizontal open-hole wells, comprise that outer sleeve (1), body (2), gage beam (11), subsidiary arm (13), gage beam start spring leaf (12), slip protection mechanism, gage beam pre-tightening mechanism, trigger mechanism (19), is characterized in that: described outer sleeve (1) is connected by bolt with body (2) two ends; Described slip protection mechanism is in described body (1) slides within; The lower end of described gage beam (11) upper end and described slip protection mechanism is hinged by pin, and the lower end of the upper end of described subsidiary arm (13) and described gage beam (11) is hinged by pin; The lower end of subsidiary arm (13) and the upper end of described gage beam pre-tightening mechanism are hinged by pin; Described gage beam starts spring leaf (12) and is bolted on described gage beam (11) inner side, for starting gage beam (11), prevents that gage beam (11) is stuck; The lower end of described gage beam pre-tightening mechanism is connected with described trigger mechanism (19), and described gage beam pre-tightening mechanism is arranged on described body (2) inside; Described trigger mechanism (19) is fixed on that described body (2) one end is used for triggering gage beam (11) and subsidiary arm (13) opens;
Described slip protection mechanism is comprised of potentiometer movable sleeving (21), potentiometer power supply and storage area (6), potentiometer movable sleeving spring lever (4), the protection spring (5) that slides, potentiometer movable sleeving termination (3); described potentiometer movable sleeving (21) inside comprises potentiometer pusher (20), push rod sliding sleeve (28), push rod spring (27), potentiometer holder (23), potentiometer (24), potentiometer terminal stud (22), sealing ring (26), connect leather bag (25), described push rod spring (27) is arranged between described potentiometer pusher (20) and push rod sliding sleeve (28), described potentiometer pusher (20) is close to described gage beam (11) under described push rod spring (27) effect, between described potentiometer pusher (20) and described push rod sliding sleeve (28), there is sealing ring (26), described push rod sliding sleeve (28) is connected by being connected leather bag (25) with described potentiometer holder (23), described potentiometer (24) is connected by bolt and potentiometer pusher (20), and described potentiometer terminal stud (22) is connected with potentiometer holder (23), described potentiometer power supply and storage area (6) are bolted with potentiometer movable sleeving (21), and described potentiometer power supply and storage area (6) are comprised of potentiometer storage holder (9), potentiometer power slot (8) and storage area draw-in groove lid (7), described potentiometer movable sleeving spring lever (4) one end is connected by bolt and described potentiometer power supply and storage area (6), described potentiometer movable sleeving spring lever (4) other end and described potentiometer movable sleeving termination (3) are connected, and described slip protection spring (5) is housed between described potentiometer movable sleeving spring lever (4) and body (2).
2. drifting tubular column carrying bidirectional-moving caliper for horizontal open-hole wells according to claim 1, it is characterized in that: described gage beam pre-tightening mechanism is comprised of gage beam push rod (14), gage beam push rod spring block (15), preloading spring (17), gage beam push rod upper cover (16,18), described gage beam push rod (14) is connected with gage beam push rod spring block (15), between described gage beam push rod spring block (15) and described body (2), described preloading spring (17) is installed, described gage beam push rod upper cover (16,18) is connected by bolt and described body (2).
3. drifting tubular column carrying bidirectional-moving caliper for horizontal open-hole wells according to claim 1; it is characterized in that: described drifting tubular column carrying bidirectional-moving caliper for horizontal open-hole wells contains gage beam (11) described in quadruplet, subsidiary arm (13), gage beam and starts spring leaf (12), slip protection mechanism, gage beam pre-tightening mechanism, and distribute along described body (2) even circumferential.
4. drifting tubular column carrying bidirectional-moving caliper for horizontal open-hole wells according to claim 1, it is characterized in that: described trigger mechanism, comprise trigger body (36), guiding valve (31), guiding valve sealing ring (30), suppress shear pin (43), suppress ball (37), suppress ball seat (38), suppress scotch (33), block (40), the seat (39) of blocking; Described triggering body (36) is bolted at outer sleeve (1) upper, and there is cavity at described triggering body (36) center; Described guiding valve (31) is arranged on described triggering body (36) cavity inside, has described guiding valve sealing ring (30) sealing between described guiding valve (31) and triggering body (36), and fixes by the described shear pin (43) of suppressing; Ball seat (38) is suppressed described in being equipped with in described guiding valve (31) top, and described guiding valve (31) surface respectively has one section of groove up and down.
5. drifting tubular column carrying bidirectional-moving caliper for horizontal open-hole wells according to claim 4, it is characterized in that: described in suppress scotch (33) to be fixed by a pin to described triggering body (36) upper, described in suppress scotch (33) head and withstand guiding valve (31) lower recess compared with shallow portion; On described triggering body (36), be provided with suppress body upper cover (32) and described in suppress scotch upper cover (34), described in suppress and suppress scotch (33) described in scotch upper cover (34) restriction and rotate counterclockwise; Described triggering body (36) internal voids with described in suppress body upper cover (32), described in suppress scotch upper cover (34) and form slurry channel (35); The described seat (39) of blocking is arranged on described triggering body (36) by screw, described blocking (40) is positioned between described guiding valve (31) and gage beam push rod (41), and the seat (39) of blocking described in being arranged on is upper, utilize described guiding valve (31) external surface will described in block (40) be pressed in the groove of described gage beam push rod (41) rear end.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110314953.1A CN102330550B (en) | 2011-10-18 | 2011-10-18 | Drifting tubular column carrying bidirectional-moving caliper for horizontal open-hole wells |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110314953.1A CN102330550B (en) | 2011-10-18 | 2011-10-18 | Drifting tubular column carrying bidirectional-moving caliper for horizontal open-hole wells |
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| Publication Number | Publication Date |
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| CN102330550A CN102330550A (en) | 2012-01-25 |
| CN102330550B true CN102330550B (en) | 2014-01-15 |
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| CN201110314953.1A Expired - Fee Related CN102330550B (en) | 2011-10-18 | 2011-10-18 | Drifting tubular column carrying bidirectional-moving caliper for horizontal open-hole wells |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104005754A (en) * | 2014-05-26 | 2014-08-27 | 上海大学 | Horizontal open hole well diameter ultrasonic measuring instrument carried by pigging tubular column |
| CN113653453A (en) * | 2021-08-18 | 2021-11-16 | 中石化石油工程技术服务有限公司 | Downhole reducing environment self-adaptive adjusting device of tractor and control method thereof |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4243099A (en) * | 1978-05-24 | 1981-01-06 | Schlumberger Technology Corporation | Selectively-controlled well bore apparatus |
| CN101131089A (en) * | 2006-08-23 | 2008-02-27 | 中国石油天然气集团公司 | Push-pull type multi-arm righting hole diameter micrologging instrument |
| CN201326413Y (en) * | 2008-11-19 | 2009-10-14 | 陈耕 | Combined well logging probe |
| CN102155215A (en) * | 2011-05-05 | 2011-08-17 | 沈阳新锦石油设备有限公司 | Horizontal well dual caliper |
-
2011
- 2011-10-18 CN CN201110314953.1A patent/CN102330550B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4243099A (en) * | 1978-05-24 | 1981-01-06 | Schlumberger Technology Corporation | Selectively-controlled well bore apparatus |
| CN101131089A (en) * | 2006-08-23 | 2008-02-27 | 中国石油天然气集团公司 | Push-pull type multi-arm righting hole diameter micrologging instrument |
| CN201326413Y (en) * | 2008-11-19 | 2009-10-14 | 陈耕 | Combined well logging probe |
| CN102155215A (en) * | 2011-05-05 | 2011-08-17 | 沈阳新锦石油设备有限公司 | Horizontal well dual caliper |
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| CN102330550A (en) | 2012-01-25 |
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Granted publication date: 20140115 Termination date: 20161018 |