CN107725032A - A kind of seal shock-proof structure of high temperature and high pressure environment lower component - Google Patents
A kind of seal shock-proof structure of high temperature and high pressure environment lower component Download PDFInfo
- Publication number
- CN107725032A CN107725032A CN201610660147.2A CN201610660147A CN107725032A CN 107725032 A CN107725032 A CN 107725032A CN 201610660147 A CN201610660147 A CN 201610660147A CN 107725032 A CN107725032 A CN 107725032A
- Authority
- CN
- China
- Prior art keywords
- damping
- cylinder
- sensor
- lower component
- pressure environment
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000013016 damping Methods 0.000 claims abstract description 55
- 238000007789 sealing Methods 0.000 claims description 32
- 239000000084 colloidal system Substances 0.000 claims description 9
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical group [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 7
- 229910052802 copper Inorganic materials 0.000 claims 1
- 239000010949 copper Substances 0.000 claims 1
- 230000035939 shock Effects 0.000 abstract description 7
- 238000010521 absorption reaction Methods 0.000 abstract description 5
- 230000009977 dual effect Effects 0.000 abstract description 4
- 230000036461 convulsion Effects 0.000 abstract description 2
- 238000000034 method Methods 0.000 abstract description 2
- 239000012945 sealing adhesive Substances 0.000 abstract 1
- 230000006835 compression Effects 0.000 description 4
- 238000007906 compression Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 238000005259 measurement Methods 0.000 description 3
- 238000012545 processing Methods 0.000 description 3
- 229920002449 FKM Polymers 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000005553 drilling Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 241001074085 Scophthalmus aquosus Species 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- DMFGNRRURHSENX-UHFFFAOYSA-N beryllium copper Chemical compound [Be].[Cu] DMFGNRRURHSENX-UHFFFAOYSA-N 0.000 description 1
- 210000000988 bone and bone Anatomy 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 238000005538 encapsulation Methods 0.000 description 1
- 230000003628 erosive effect Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 230000037361 pathway Effects 0.000 description 1
- 238000012827 research and development Methods 0.000 description 1
- 238000001228 spectrum Methods 0.000 description 1
- 230000009897 systematic effect Effects 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
- E21B47/00—Survey of boreholes or wells
- E21B47/01—Devices for supporting measuring instruments on drill bits, pipes, rods or wirelines; Protecting measuring instruments in boreholes against heat, shock, pressure or the like
- E21B47/017—Protecting measuring instruments
Landscapes
- Physics & Mathematics (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Geophysics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Fluid-Damping Devices (AREA)
Abstract
The invention discloses a kind of seal shock-proof structure of high temperature and high pressure environment lower component, transform non magnetic drill collar as cylinder formula structure.Series standardized column structure design is formulated for different size drill collars by calculating and emulating, while ensureing that sensor and circuit possess maximum installing space, is optimal drill collar mechanical property.Using damping sealing adhesive process encapsulated circuit（Sensor）With the dual shock absorption mode of damping skeleton, ensure that circuit and sensor remain to reliably working under extreme jerk environment.Cylinder formula seal shock-proof structure proposed by the present invention provides modularization thinking for bottom hole assembly planning, greatly shortens the product design cycle, lifts the reliability and success rate of new product.
Description
Technical field
The present invention relates to a kind of damping with brill apparatus structure, especially a kind of seal shock-proof of high temperature and high pressure environment lower component
Structure, available for seal sensor and circuit, cut down jerk.
Background technology
Damping has very important meaning in well logging and geosteering instrument.Conventional base mode is more with screw
It is rigidly connected and coordinates spring shock absorption, its shortcoming is that volume is big, and damping effect directionality is obvious.
Moreover, the measurement performance of many sensors is influenceed very big by sensor diameter, such as the Gamma that diameter is bigger
Sensor measurement performance is more excellent.In drilling engineering field, it disclosure satisfy that the Gamma sensor diameters of measurement while drilling cutting edge technology exist
More than φ 30mm, and need to install 3 in same depth circumference array.And current, Gamma of the diameter more than φ 30mm
Sensor main will use hanging-connecting structure placed in the middle.By sensor（Circuit）It is φ 42mm to be placed on internal diameter, and external diameter is φ 48mm's
In beryllium copper resistance to compression cylinder, then resistance to compression cylinder is articulated in drill collar inner flow passage between two parties.Because drill collar inner flow passage space limits, Ci Zhongan
One Gamma sensor can only be installed in same well depth position under dress mode, the high new instrument such as Gamma power spectrums can not be met same
One well depth needs the technical requirements of three sensors.Although some small-sized sensors have employed the installation side of side wall fluting
Formula, but due to no progress mechanics parameter optimization, the maximum gauge of institute's energy install sensor is in 28mm or so, and damping performance
It is very weak.
The content of the invention
The invention aims to overcome it is existing with bore instrument can not ensure reliably to install at same well depth it is multiple big
A kind of deficiency of diameter sensor, there is provided seal shock-proof structure of high temperature and high pressure environment lower component.
The present invention seal shock-proof structure can same well depth install three to four major diameter sensors, be significantly increased with
The bearing capacity of instrument device is bored, trusted platform is provided for the research and development of new instrument.Meanwhile the shock-damping structure introduced in the present invention
For dual shock absorption sealing structure, strengthen the anti-seismic performance of sensor and circuit, lift global reliability and the life-span of instrument.Damping
Skeleton simplifies assemble flow with drill collar plug-in connected mode, reduces cost of manufacture.Seal shock-proof structure can be applied to many
New instrument designs, and the installation for major diameter sensor and circuit provides total solution.
In order to solve the above technical problems, the present invention realizes by using following technical scheme mode：
A kind of seal shock-proof structure of high temperature and high pressure environment lower component, including sealing structure and damping skeleton 7；The sealing structure
Comprising the one or more being axially distributed, sealing structure is in the distribution semicolumn cylinder sealing of the neighboring of cylinder 1 of hollow structure
Chamber 101, each cylinder annular seal space 101 is sealed by flexible sealing cover plate 3 and forms inner circular cylindrical cavity, cylindric internally
One end set connector 4 of cavity, between the cylinder 1 of the multiple sealing structures and outer end of cylinder 1 pass through the phase of linkage section 2
Even；The damping skeleton 7 includes damping skeleton plug connector 701, circuit groove 702 and the sensor covering 703 being sequentially connected, its
In, damping skeleton plug connector 701 forms grafting with connector 4 and coordinated, and is set respectively in sensor covering 703 and circuit groove 702
Damping colloid 706.
Such scheme also includes：
The damping skeleton 7 also includes being connected to elastic excessive first the 705 of the outer end of sensor covering 703, and is arranged on damping
Skeleton plug connector 701, circuit groove 702, sensor covering 703 and the damping righting copper ring 704 of excessive first 705 junction of elasticity.
The outer layer of damping colloid 706 is convex stupefied structure；Sealing ring is cased with inside and outside the damping righting copper ring 704.
When flexible sealing cover plate 3 is assemblied on cylinder 1, both assemble the moment of inertia and differed not with the moment of inertia of linkage section 2
More than ± 15%；The damping skeleton circuit groove 702 is similar with the shape of sensor covering 703, volume Scaling, straight line away from
Reduce 1 to 3mm.
It is excessive by 12 ° to 30 ° chamferings between the linkage section 2 and cylinder 1.
Compared with prior art, the beneficial effects of the invention are as follows：Drill collar is extended for circuit and the loading energy of sensor
Power, enhance ability to bear of the instrument to impact endurance test shock.For length identical instrument, the delivered payload capability of structure is to mount between two parties
The three-to-four-fold of formula, 10g vibrations, 1000g impact can be born.Moreover, compared to traditional structure, structure：（1）No longer
Need to mount resistance to compression cylinder, reduce cost, while reduce the systematic risk that the erosion of resistance to compression barrel structure may be brought；（2）Letter
Change and make, install, maintenance process.Circuit framework is connected by connector with drill collar, and operating efficiency lifts two to three times；（3）Mould
Block degree is high, and autgmentability is strong, simplifies new instrument mentality of designing.
Brief description of the drawings
Fig. 1 is the overall construction drawing of an embodiment of the present invention.
Fig. 2 is the cylinder A-A cross-sectional views of the present invention
Fig. 3 is the cylinder annular seal space front view of the present invention
Fig. 4 is the damping skeleton structure diagram of the present invention
Fig. 5 is the flexible sealing covering plate structure figure of the present invention
Fig. 6 is sensor of the invention covering section B-B schematic diagram
Fig. 7 is the damping skeleton circuit groove C-C schematic cross-sections of the present invention.
Embodiment
The present invention is described further with specific embodiment below in conjunction with the accompanying drawings.
Description of symbols in Fig. 1-7：
1st, cylinder, 2, linkage section, 3, flexible sealing cover plate, 4, plug connector, 5, inner flow passage, 6, drill collar thread, 7, damping bone
Frame, 101, cylinder annular seal space, 102, cylinder sealing surface, 103, cylinder screw hole, 301, cover plate device cavity, 302, cover plate for sealing
Groove, 303, cover plate cross screw hole, 701, damping skeleton plug connector, 702, damping skeleton circuit groove, 703, sensor covering,
704th, righting copper ring, 705, the excessive head of elasticity, 706, damping colloid, 707, sensor, 708, circuit.
The scheme of the present embodiment is：By force analysis and emulation, for various sizes of bottom hole assembly planning seal shock-proof knot
Structure.Seal shock-proof structure is broadly divided into two parts：Sealing structure and dual shock absorption structure（That is damping skeleton structure）.
Sealing structure：Structure is connected and composed by the less linkage section 2 of the cylinder 1 and diameter that are relatively large in diameter.Linkage section 2 plays
Cylinder 1 is connected with cylinder 1 or is connected the effect of cylinder 1 and screw thread 6.The length of cylinder 1 is according to practical layout sensor type
Make a choice, two kinds of only different column structures of length are given in Fig. 1.The outer wall circumferencial direction of cylinder 1 uniformly arrive by processing two
Four（The present embodiment selection is respectively up and down 3）Semicolumn device sealing chamber 101, device sealing chamber 101 and flexible sealing cover plate 3
With damping reinforced seal chamber is combined into, to place damping skeleton 7.The outside of device sealing chamber 101 processing cylinder sealing surface 102,
The inner side of cover plate device cavity 301 processing cover plate for sealing groove 302.Cover plate for sealing groove 302 seals built with viton seal ring with cylinder
Face 102 coordinates to dress, crosses screw hole 303 and cylinder screw hole 103 with without magnetic mode connects for screw cover plate, completes flexible sealing cover plate 3
Fixation.When flexible sealing cover plate 3 is assemblied on cylinder 1 by working condition, moment of inertia of cross-section and the cylinder 1 of linkage section 2
Assembling body section average inertia square difference must not exceed ± 15%.It is excessive by 12 ° to 30 ° chamferings between linkage section and cylinder.
Cylinder device cavity 101, to be connected with damping skeleton connector 701, forms circuit pathways built with connector 4.
Connector 4 is passed with overall instrument by the cable-through hole beaten on cylinder and establishes communication and power path.
Dual shock absorption structure：First again damping be sealing damping.Directly subtract in sensor 707 and the outer envelope of circuit 708
Colloid 706 is shaken, to protect sensor 707 and circuit 708.The shape of damping colloid 706 respectively with damping skeleton circuit groove 702 and
The shape of sensor covering 703 is similar, volume Scaling, and straight line is away from reduction 1 to 3mm.It is convex stupefied in the outer layer increase of colloid, it is convex stupefied
For diameter 1.8mm semicolumn.The colloid that encapsulation is completed loads in damping skeleton circuit groove 702 and sensor covering 703
It is fixed.
Second again damping be damping skeleton damping.Damping skeleton 7 includes damping skeleton connector 701, damping skeleton circuit
Groove 702, sensor covering 703 and damping righting copper ring 704, damping skeleton excessive first 705.Damping skeleton connector 701 to
Docked with connector 4, the ectonexine of damping righting copper ring 704 is cased with viton seal ring, plays and absorbs impact endurance test shock effect.
Claims (5)
- A kind of 1. seal shock-proof structure of high temperature and high pressure environment lower component, it is characterised in that：Including sealing structure and damping skeleton （7）；The sealing structure includes the one or more being axially distributed, and sealing structure is the cylinder in hollow structure（1）Neighboring It is distributed semicolumn cylinder annular seal space（101）, each cylinder annular seal space（101）Pass through flexible sealing cover plate（3）Seal and form interior Portion's cylindrical cavity, internally cylindrical cavity an end set connector（4）, the cylinder of multiple sealing structures（1）It Between and cylinder（1）Outer end passes through linkage section（2）It is connected；The damping skeleton（7）Damping skeleton including being sequentially connected is inserted Fitting（701）, circuit groove（702）With sensor covering（703）, wherein, damping skeleton plug connector（701）With connector（4）Structure Coordinate into grafting, sensor covering（703）With circuit groove（702）Damping colloid is inside set respectively（706）.
- 2. the seal shock-proof structure of high temperature and high pressure environment lower component according to claim 1, it is characterised in that：The damping Skeleton（7）Also include being connected to sensor covering（703）The elastic excessive head of outer end（705）, and be arranged on damping skeleton and insert Fitting（701）, circuit groove（702）, sensor covering（703）With the excessive head of elasticity（705）The damping righting copper ring of junction （704）.
- 3. the seal shock-proof structure of high temperature and high pressure environment lower component according to claim 2, it is characterised in that：The damping Colloid（706）Outer layer is convex stupefied structure；The damping righting copper ring（704）It is inside and outside to be cased with sealing ring.
- 4. the seal shock-proof structure of the high temperature and high pressure environment lower component according to claim 1 or 2,3, it is characterised in that：When Flexible sealing cover plate（3）It is assemblied in cylinder（1）When upper, both assemble the moment of inertia and linkage section（2）The moment of inertia difference be no more than ±15%；The damping skeleton circuit groove（702）With sensor covering（703）Shape it is similar, volume Scaling, straight line away from Reduce 1 to 3mm.
- 5. the seal shock-proof structure of high temperature and high pressure environment lower component according to claim 4, it is characterised in that：The connection Section（2）With cylinder（1）Between it is excessive by 12 ° to 30 ° chamferings.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610660147.2A CN107725032A (en) | 2016-08-12 | 2016-08-12 | A kind of seal shock-proof structure of high temperature and high pressure environment lower component |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610660147.2A CN107725032A (en) | 2016-08-12 | 2016-08-12 | A kind of seal shock-proof structure of high temperature and high pressure environment lower component |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107725032A true CN107725032A (en) | 2018-02-23 |
Family
ID=61200637
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610660147.2A Pending CN107725032A (en) | 2016-08-12 | 2016-08-12 | A kind of seal shock-proof structure of high temperature and high pressure environment lower component |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107725032A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111197481A (en) * | 2018-10-31 | 2020-05-26 | 中石化石油工程技术服务有限公司 | Bearing drilling tool of measurement and control instrument while drilling |
Citations (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2475821Y (en) * | 2001-03-16 | 2002-02-06 | 北京石油机械厂 | A vibration-reducing device for drilling column |
| CN2767638Y (en) * | 2005-02-03 | 2006-03-29 | 中国石油天然气集团公司 | Air mechanical vibration-damper |
| CN201232527Y (en) * | 2008-08-04 | 2009-05-06 | 中国石化集团胜利石油管理局钻井工艺研究院 | Transversal shock-absorber suitable for gas drilling |
| CN201377318Y (en) * | 2009-03-06 | 2010-01-06 | 北京宝恩通科技有限公司 | Deoscillator of wireless declinator while drilling |
| CN101644144A (en) * | 2008-08-04 | 2010-02-10 | 中国石化集团胜利石油管理局钻井工艺研究院 | Transverse shock absorber applicable in gas drilling |
| CN201705239U (en) * | 2010-05-21 | 2011-01-12 | 中国海洋石油总公司 | Detachable circuit seal structure |
| CN201714316U (en) * | 2010-05-27 | 2011-01-19 | 贵州高峰石油机械股份有限公司 | Rubber shock absorber |
| CN102410012A (en) * | 2011-12-29 | 2012-04-11 | 北京蒙德纳科技发展有限公司 | Combined damping system and device for inclination measuring cartridge of wireless drilling inclinometer |
| CN202348268U (en) * | 2011-11-23 | 2012-07-25 | 西安思坦仪器股份有限公司 | High-precision fracturing electronic pressure gauge |
| CN202946122U (en) * | 2012-12-20 | 2013-05-22 | 北京盛锐马科技有限公司 | Shock absorption system of petroleum drilling and logging device |
| CN203050676U (en) * | 2012-12-20 | 2013-07-10 | 西安思坦仪器股份有限公司 | Sound-wave logging instrument with function of sound insulation |
| CN105756663A (en) * | 2016-04-01 | 2016-07-13 | 中国石油化工股份有限公司 | Down-hole parameter monitoring device for fracturing |
| CN205876298U (en) * | 2016-08-12 | 2017-01-11 | 中石化石油工程技术服务有限公司 | Sealed shock -absorbing structure of parts under high temperature and high pressure environment |
-
2016
- 2016-08-12 CN CN201610660147.2A patent/CN107725032A/en active Pending
Patent Citations (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2475821Y (en) * | 2001-03-16 | 2002-02-06 | 北京石油机械厂 | A vibration-reducing device for drilling column |
| CN2767638Y (en) * | 2005-02-03 | 2006-03-29 | 中国石油天然气集团公司 | Air mechanical vibration-damper |
| CN201232527Y (en) * | 2008-08-04 | 2009-05-06 | 中国石化集团胜利石油管理局钻井工艺研究院 | Transversal shock-absorber suitable for gas drilling |
| CN101644144A (en) * | 2008-08-04 | 2010-02-10 | 中国石化集团胜利石油管理局钻井工艺研究院 | Transverse shock absorber applicable in gas drilling |
| CN201377318Y (en) * | 2009-03-06 | 2010-01-06 | 北京宝恩通科技有限公司 | Deoscillator of wireless declinator while drilling |
| CN201705239U (en) * | 2010-05-21 | 2011-01-12 | 中国海洋石油总公司 | Detachable circuit seal structure |
| CN201714316U (en) * | 2010-05-27 | 2011-01-19 | 贵州高峰石油机械股份有限公司 | Rubber shock absorber |
| CN202348268U (en) * | 2011-11-23 | 2012-07-25 | 西安思坦仪器股份有限公司 | High-precision fracturing electronic pressure gauge |
| CN102410012A (en) * | 2011-12-29 | 2012-04-11 | 北京蒙德纳科技发展有限公司 | Combined damping system and device for inclination measuring cartridge of wireless drilling inclinometer |
| CN202946122U (en) * | 2012-12-20 | 2013-05-22 | 北京盛锐马科技有限公司 | Shock absorption system of petroleum drilling and logging device |
| CN203050676U (en) * | 2012-12-20 | 2013-07-10 | 西安思坦仪器股份有限公司 | Sound-wave logging instrument with function of sound insulation |
| CN105756663A (en) * | 2016-04-01 | 2016-07-13 | 中国石油化工股份有限公司 | Down-hole parameter monitoring device for fracturing |
| CN205876298U (en) * | 2016-08-12 | 2017-01-11 | 中石化石油工程技术服务有限公司 | Sealed shock -absorbing structure of parts under high temperature and high pressure environment |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111197481A (en) * | 2018-10-31 | 2020-05-26 | 中石化石油工程技术服务有限公司 | Bearing drilling tool of measurement and control instrument while drilling |
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|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20220210 Address after: 100029 Chaoyang District, Beijing Hui Xin Street six, Twelfth level. Applicant after: SINOPEC OILFIELD SERVICE Corp. Applicant after: SINOPEC SHENGLI PETROLEUM ENGINEERING Co.,Ltd. Applicant after: Sinopec Jingwei Co.,Ltd. Applicant after: Geological measurement and Control Technology Research Institute of Sinopec Jingwei Co.,Ltd. Address before: 100101 Beichen West Road, Chaoyang District, Beijing 8 Beichen world center, block A 703. Applicant before: SINOPEC OILFIELD SERVICE Corp. Applicant before: SINOPEC SHENGLI PETROLEUM ENGINEERING Co.,Ltd. Applicant before: SINOPEC SHENGLI PETROLEUM ENGINEERING CO., LTD. DRILLING TECHNOLOGY Research Institute |
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| TA01 | Transfer of patent application right |