CN110439494A - The response type drilling rod sealing structure and encapsulating method of sealing material can be filled in - Google Patents
The response type drilling rod sealing structure and encapsulating method of sealing material can be filled in Download PDFInfo
- Publication number
- CN110439494A CN110439494A CN201910902961.4A CN201910902961A CN110439494A CN 110439494 A CN110439494 A CN 110439494A CN 201910902961 A CN201910902961 A CN 201910902961A CN 110439494 A CN110439494 A CN 110439494A
- Authority
- CN
- China
- Prior art keywords
- sealing material
- drilling rod
- sealing
- seal chamber
- response type
- 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.)
- Withdrawn
Links
- 239000003566 sealing material Substances 0.000 title claims abstract description 66
- 238000005553 drilling Methods 0.000 title claims abstract description 57
- 238000007789 sealing Methods 0.000 title claims abstract description 46
- 238000000034 method Methods 0.000 title claims abstract description 9
- 239000012530 fluid Substances 0.000 claims abstract description 7
- 239000000835 fiber Substances 0.000 claims description 16
- 239000011435 rock Substances 0.000 claims description 8
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 8
- 230000000694 effects Effects 0.000 claims description 7
- 239000000463 material Substances 0.000 claims description 7
- 239000004568 cement Substances 0.000 claims description 4
- 238000012856 packing Methods 0.000 claims description 4
- 239000006260 foam Substances 0.000 claims description 3
- 239000013589 supplement Substances 0.000 claims description 3
- 235000013399 edible fruits Nutrition 0.000 claims description 2
- 238000002347 injection Methods 0.000 claims description 2
- 239000007924 injection Substances 0.000 claims description 2
- 238000005299 abrasion Methods 0.000 abstract description 3
- 230000015572 biosynthetic process Effects 0.000 abstract description 2
- 238000005538 encapsulation Methods 0.000 abstract description 2
- 239000007789 gas Substances 0.000 description 6
- 238000010586 diagram Methods 0.000 description 3
- 239000000243 solution Substances 0.000 description 3
- 239000003245 coal Substances 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- RAQQRQCODVNJCK-JLHYYAGUSA-N N-[(4-amino-2-methylpyrimidin-5-yl)methyl]-N-[(E)-5-hydroxy-3-(2-hydroxyethyldisulfanyl)pent-2-en-2-yl]formamide Chemical compound C\C(N(Cc1cnc(C)nc1N)C=O)=C(\CCO)SSCCO RAQQRQCODVNJCK-JLHYYAGUSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 239000003345 natural gas Substances 0.000 description 1
- 239000003921 oil Substances 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 239000013618 particulate matter Substances 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 239000010802 sludge Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B33/00—Sealing or packing boreholes or wells
- E21B33/02—Surface sealing or packing
- E21B33/03—Well heads; Setting-up thereof
Abstract
The present invention relates to response type drilling rod sealing structures and encapsulating method that one kind can fill in sealing material, which includes orifice tube, and drilling rod is provided in orifice tube, and drilling rod front end is provided with drill bit, is provided with diffluence pass on orifice tube；The seal chamber for closing gap between drilling rod and orifice tube is equipped with positioned at diffluence pass top in orifice tube, the upper and lower end of seal chamber is in conical ring shape, drilling rod passes through the conical ring of seal chamber upper and lower end, and seal chamber is equipped with the inlet of injecting sealing material, is full of sealing material in seal chamber.The present invention solves the security risk of conventional sealing material wear-out failure formation, sealing material is supplemented by inlet discontinuity, make in seal chamber always full of sealing material, in the case that it is non-porous it is interior gush, the sealing material in seal chamber is in loose and half loose condition (of surface), it is influenced by drill rod abrasion very low, and under the state of gushing, due to the squeezing action of fluid, sealing material is extruded, to close encapsulation chamber, response type self-sealing state is realized.
Description
Technical field
The present invention relates to drilling rod sealing structure, specifically a kind of response type drilling rod sealing structure that can fill in sealing material
And encapsulating method.
Background technique
Petroleum, natural gas, shale gas, coal bed gas, coal mine gas protrusion-dispelling, tunnel leting speeper require construction drill, in order to
Construction personnel's execute-in-place safety, aperture must realize more reliable orifice blowout prevention and flow-dividing control, prevent liquid or gas (two
The mixture of person) ejection out of control, i.e. blowout.
Drilling orifice generally installs and uses rubber seal or packing, structure such as attached drawing 1 to the sealing of drilling rod at present.Due to
Drilling rod is that solid drawn tube surface just has certain roughness originally, in long-time rotation and vibration situation, is be easy to cause close
Sealing (glue core) wear-out failure；Drilling rod surface spikes and bumps caused by chuck and pipe wrench, exacerbate close during drill footage
Seal wear failure.Therefore, the compensation rate of traditional drilling rod sealing element is very limited.
Summary of the invention
In view of the deficiency of the prior art, it is simple to provide a kind of structure by the present invention, can be improved sealing effect, reduces
Seal the response type drilling rod sealing structure that can fill in sealing material and encapsulating method of cost.
The technical solution used to solve the technical problems of the present invention is that:
A kind of response type drilling rod sealing structure that can fill in sealing material, including orifice tube are provided with drilling rod in orifice tube, bore
Bar front end is provided with drill bit, is provided with diffluence pass on orifice tube；It is located at diffluence pass top in orifice tube to be equipped with for closing drilling rod
The seal chamber in gap between orifice tube, the upper and lower end of seal chamber are in conical ring shape, and drilling rod passes through the conical ring of seal chamber upper and lower end,
Seal chamber is equipped with the inlet of injecting sealing material, is full of sealing material in seal chamber.
The present invention by adopting the above technical scheme, compared with prior art, beneficial effect is:
It solves the security risk of sealing material wear-out failure formation, sealing material is supplemented by inlet discontinuity, makes to seal
It is intracavitary to be full of sealing material always.In the case that it is non-porous it is interior gush, the sealing material in seal chamber is in loose and half is fluffy
State, under drilling rod rotation and front and back vibration state, influenced by drill rod abrasion it is very low, and under the state of gushing, due to squeezing for fluid
Pressure effect, sealing material is extruded, so that close encapsulation chamber, realizes response type self-sealing state.This is that traditional structure can not
The sealing effect of realization.
The encapsulating method of the above-mentioned response type drilling rod sealing structure that can fill in sealing material carries out in the steps below:
(1) the effective cement in aperture is consolidated in rockhole oral area secured；
(2) in the fixed situation of drilling rod, sealing material is filled into seal chamber, sealing material is soft sealer, soft
Sealer selects staple, packing, cast tow rope and the like, and length and diameter is suitable for that convenient filled in manually by inlet is advisable；It is close
Seal it is intracavitary full of after sealing material by inlet firm closure；
(3) drilling rod starting, drill bit and rod boring simultaneously drill through the water body in rock stratum, and under rock pressure effect, water body can be along hole
Mouth pipe gushs out outward, enters seal chamber by the annular gap of seal chamber lower end after diffluence pass, the sealing in seal chamber
Material can be pushed through at the seal chamber upper end i.e. annular gap of export direction, make the annular gap of the export direction by sealing material
Material squeezes sealing, forms response type self-sealing state；
(4) in drilling rod rotation and vibration, keep the sealing material of sealing state that can wear off, pressure will cause in hole
The leakage of export direction annular gap；At this point, realizing response type self-sealing state by the sealing material in supplement seal chamber；
Or:
Sealing material selection slush pump is capable of the fiber grain mud of smooth conveying, and fiber grain mud is the saw broken fruit of foam staple fiber
Shell mud；There is the fiber grain mud of sufficient amount in mud pit, operated by slush pump discontinuity, sealing is supplemented into seal chamber
Material；Slush pump shuts down, and under the promotion of orifice tube fluid pressure, the fiber grain object in seal chamber can be pushed through out
At the annular gap in mouth direction, the response type dynamic sealing of duration is realized.
Further, the preferred solution of the invention is:
The conical ring internal diameter of seal chamber upper and lower end differs 4mm with drilling rod outer diameter, less than the length or diameter of sealing material, guarantees to bore
Bar is freely rotated and vibration.
Inlet is arranged two, and two inlets are arranged along orifice tube radial symmetric.
When using slush pump discontinuity injecting sealing material, one of inlet closing, another inlet passes through company
It connects hose to connect with slush pump, slush pump connects mud pit.
Detailed description of the invention
Fig. 1 is the drilling rod sealed structural schematic diagram of the prior art；
Fig. 2 is sealed structural schematic diagram of the invention；
Sealed structural schematic diagram when Fig. 3 is using slush pump discontinuity injecting sealing material；
In figure: 1, water body；2, rock stratum；3, drill bit；4, cement；5, drilling rod；6, orifice tube；7, right side diffluence pass；8, left side shunts
Mouthful；9, fixed retaining ring；10, rubber seal；11, movable retaining ring；12, threaded spigot；13, right side inlet；14, left side is injected
Mouthful；15, seal chamber；16, sealing material；17, upper end conical ring；18, lower end conical ring；19, hose is connected；20, slush pump；21, mud
Stock tank.
Specific embodiment
Referring to the drawings and embodiment the present invention is described in detail.
Referring to fig. 2, a kind of response type drilling rod sealing structure that can fill in sealing material, main body are one and are arranged in hole
Seal chamber 15 in mouth pipe 6；The seal chamber 15 is located at the top of diffluence pass (right side diffluence pass 7, left side diffluence pass 8), by
Upper end conical ring 17, lower end conical ring 18 and 6 ontology of orifice tube are constituted, and drilling rod 5 passes through upper end conical ring 17, lower end conical ring 18, upper end cone
Ring 17, lower end conical ring 18 internal diameter differ about 4mm with the outer diameter of drilling rod 5, spacing is less than the length or diameter of sealing material 16, protects
Card drilling rod 5 is freely rotated and vibration；Seal chamber 15 is equipped with the right side inlet 13 and left side inlet 14 of injecting sealing material, right
Side inlet 13 and left side inlet 14 are arranged along 6 radial symmetric of orifice tube, and sealing material 16 is full of in seal chamber 1.
Sealing material 16 in seal chamber 1 can be filled in manually by right side inlet 13 and left side inlet 14, sealing
After chamber 1 fills up sealing material 16, using screw thread or cotter pin configuration firm closure inlet, two inlets have inverse when necessary
Only function.
Referring to Fig. 3, when using 20 discontinuity injecting sealing material 16 of slush pump, left side inlet 14 is closed, right side injection
Mouth 13 is connect by connecting hose 19 with slush pump 20, and slush pump 20 connects mud pit 21.
The encapsulating method of this response type drilling rod sealing structure that can fill in sealing material, is pressed described in the present embodiment
State step progress:
(1) hole month first in rock stratum 2 consolidates the cement 4 of orifice tube 6 securely；
(2) in the fixed situation of drilling rod 5, sealing material 16 is filled into seal chamber 15, sealing material 16 is soft sealing
Object, soft sealer selection staple, packing, cast tow rope and the like, length and diameter is greater than 4mm；15 full of close in seal chamber
By inlet firm closure after closure material 16；
(3) drilling rod 5 starts, and drill bit 3 and drilling rod 5 creep into and drill through the water body 1 in rock stratum 2, under the effect of 2 pressure of rock stratum, water body 1
It can gush out outward along orifice tube 6, by the ring of lower end conical ring 18 and drilling rod 5 after right side diffluence pass 7, left side diffluence pass 8
Shape gap enters seal chamber 15, and the sealing material 16 in seal chamber 15 can be pushed through between upper end conical ring 17 and the ring-type of drilling rod 5
At gap, that is, export direction annular gap, squeezes the annular gap of the export direction by sealing material 16 and seal, form response
Formula self-sealing state；
(4) in the rotation of drilling rod 5 and vibration, keep the sealing material 16 of sealing state that can wear off, pressure meeting in hole
Cause the leakage of export direction annular gap；At this point, realizing response type from close by the sealing material 16 in supplement seal chamber 15
Envelope state；Or (shown in Fig. 3):
Sealing material 16 selects slush pump 20 to be capable of the fiber grain mud of smooth conveying, and fiber grain mud is saw foam staple fiber
Broken shell mud；There is the fiber grain mud of sufficient amount in mud pit 21, is operated by 20 discontinuity of slush pump, to seal chamber 15
Interior supplementary fibre particle sludge；Slush pump 20 shuts down, the fiber under the promotion of orifice tube fluid pressure, in seal chamber 15
Particulate matter can be pushed through at the annular gap of export direction, realize the response type dynamic sealing of duration.
The most important purpose of response type drilling rod sealing structure is exactly the highly pressurised liquid or gas (water, oil, gas in control drilling
Or mixtures thereof), it can use the energy that high-pressure fluid in hole generates, be pressed and sealed along direction of gushing and to be previously stored in chamber 15
The sealing material 16 of certain reserves realizes the effect of sealing drilling rod 5 at annular slot, in 15 upper end of seal chamber (end).Its is excellent
Point is automated toed respond to when high-pressure fluid sprays in hole, without manually adjusting.
The length of seal chamber 15 and internal available capacity determine the self-insurance time of self-sealing ability.The reserves of sealing material 16
It is determined by the effective diameter and length of seal chamber 15.
In the case that it is non-porous it is interior gush, the sealing material 16 inside seal chamber 15 is in loose and half loose condition (of surface), drilling rod 5
Under rotation and front and back vibration state, influenced by 5 abrasion of drilling rod very low.
The above described is only a preferred embodiment of the present invention, not making in any form to structure of the invention
Limitation.Any simple modification, equivalent change and modification to the above embodiments according to the technical essence of the invention,
Belong within the scope of technical solution of the present invention.
Claims (5)
1. one kind can fill in the response type drilling rod sealing structure of sealing material, including orifice tube, it is provided with drilling rod in orifice tube,
Drilling rod front end is provided with drill bit, is provided with diffluence pass on orifice tube；It is equipped with it is characterized by: being located at diffluence pass top in orifice tube
For closing the seal chamber in gap between drilling rod and orifice tube, the upper and lower end of seal chamber is in conical ring shape, and drilling rod passes through seal chamber
The conical ring of upper and lower end, seal chamber are equipped with the inlet of injecting sealing material, are full of sealing material in seal chamber.
2. the response type drilling rod sealing structure according to claim 1 that sealing material can be filled in, it is characterised in that: sealing
The conical ring internal diameter of chamber upper and lower end differs 4mm with drilling rod outer diameter, less than the length or diameter of sealing material, guarantees that drilling rod freely turns
Dynamic and vibration.
3. the response type drilling rod sealing structure according to claim 1 that sealing material can be filled in, it is characterised in that: injection
Mouth setting two, two inlets are arranged along orifice tube radial symmetric.
4. the response type drilling rod sealing structure according to claim 3 that sealing material can be filled in, it is characterised in that: use
When slush pump discontinuity injecting sealing material, one of inlet closing, another inlet passes through connection hose and mud
Pump connection, slush pump connect mud pit.
5. a kind of sealing for the response type drilling rod sealing structure that can fill in sealing material as described in claim 1-4 any one
Method, which is characterized in that carry out in the steps below:
(1) the effective cement in aperture is consolidated in rockhole oral area secured；
(2) in the fixed situation of drilling rod, sealing material is filled into seal chamber, sealing material is soft sealer, soft
Sealer selects staple, packing, cast tow rope and the like, and length and diameter is suitable for that convenient filled in manually by inlet is advisable；It is close
Seal it is intracavitary full of after sealing material by inlet firm closure；
(3) drilling rod starting, drill bit and rod boring simultaneously drill through the water body in rock stratum, and under rock pressure effect, water body can be along hole
Mouth pipe gushs out outward, enters seal chamber by the annular gap of seal chamber lower end after diffluence pass, the sealing in seal chamber
Material can be pushed through at the seal chamber upper end i.e. annular gap of export direction, make the annular gap of the export direction by sealing material
Material squeezes sealing, forms response type self-sealing state；
(4) in drilling rod rotation and vibration, keep the sealing material of sealing state that can wear off, pressure will cause in hole
The leakage of export direction annular gap；At this point, realizing response type self-sealing state by the sealing material in supplement seal chamber；
Or:
Sealing material selection slush pump is capable of the fiber grain mud of smooth conveying, and fiber grain mud is the saw broken fruit of foam staple fiber
Shell mud；There is the fiber grain mud of sufficient amount in mud pit, operated by slush pump discontinuity, sealing is supplemented into seal chamber
Material；Slush pump shuts down, and under the promotion of orifice tube fluid pressure, the fiber grain object in seal chamber can be pushed through out
At the annular gap in mouth direction, the response type dynamic sealing of duration is realized.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910902961.4A CN110439494A (en) | 2019-09-24 | 2019-09-24 | The response type drilling rod sealing structure and encapsulating method of sealing material can be filled in |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910902961.4A CN110439494A (en) | 2019-09-24 | 2019-09-24 | The response type drilling rod sealing structure and encapsulating method of sealing material can be filled in |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110439494A true CN110439494A (en) | 2019-11-12 |
Family
ID=68440616
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910902961.4A Withdrawn CN110439494A (en) | 2019-09-24 | 2019-09-24 | The response type drilling rod sealing structure and encapsulating method of sealing material can be filled in |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110439494A (en) |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2712973Y (en) * | 2004-06-18 | 2005-07-27 | 安徽工业大学 | Main shaft sealing device for large-size washing machine |
| US20080202770A1 (en) * | 2005-06-08 | 2008-08-28 | Bj Services Company , U.S.A. | Wellbore Bypass Method and Apparatus |
| CN102409991A (en) * | 2011-12-19 | 2012-04-11 | 西安思坦仪器股份有限公司 | Wellhead blowout prevention sealing device |
| CN204200146U (en) * | 2010-07-08 | 2015-03-11 | W·斯普利特斯托瑟 | For the seal of drilling well |
| CN205401721U (en) * | 2016-03-11 | 2016-07-27 | 广州凯里莱电气机械有限公司 | Electronic flapper liquid packing seal structure |
| US20170152740A1 (en) * | 2014-03-19 | 2017-06-01 | Slim Drilling Sserviços De Perfuração S.A. | Test tube with an inlet for filling with fluid and expelling air, and with enhanced resistance and sealing for the bop testing step in drilling systems |
| CN107724953A (en) * | 2017-09-27 | 2018-02-23 | 孙志勤 | The down-the-hole hammer reverse circulating drilling process construction method of Fluid Sealing |
| CN207974790U (en) * | 2018-03-21 | 2018-10-16 | 刘思洋 | A kind of anti-leak well head environment-protective sealing device |
| CN210483617U (en) * | 2019-09-24 | 2020-05-08 | 罗兰 | Response type drill rod sealing structure capable of being plugged with sealing material |
-
2019
- 2019-09-24 CN CN201910902961.4A patent/CN110439494A/en not_active Withdrawn
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2712973Y (en) * | 2004-06-18 | 2005-07-27 | 安徽工业大学 | Main shaft sealing device for large-size washing machine |
| US20080202770A1 (en) * | 2005-06-08 | 2008-08-28 | Bj Services Company , U.S.A. | Wellbore Bypass Method and Apparatus |
| CN204200146U (en) * | 2010-07-08 | 2015-03-11 | W·斯普利特斯托瑟 | For the seal of drilling well |
| CN102409991A (en) * | 2011-12-19 | 2012-04-11 | 西安思坦仪器股份有限公司 | Wellhead blowout prevention sealing device |
| US20170152740A1 (en) * | 2014-03-19 | 2017-06-01 | Slim Drilling Sserviços De Perfuração S.A. | Test tube with an inlet for filling with fluid and expelling air, and with enhanced resistance and sealing for the bop testing step in drilling systems |
| CN205401721U (en) * | 2016-03-11 | 2016-07-27 | 广州凯里莱电气机械有限公司 | Electronic flapper liquid packing seal structure |
| CN107724953A (en) * | 2017-09-27 | 2018-02-23 | 孙志勤 | The down-the-hole hammer reverse circulating drilling process construction method of Fluid Sealing |
| CN207974790U (en) * | 2018-03-21 | 2018-10-16 | 刘思洋 | A kind of anti-leak well head environment-protective sealing device |
| CN210483617U (en) * | 2019-09-24 | 2020-05-08 | 罗兰 | Response type drill rod sealing structure capable of being plugged with sealing material |
Non-Patent Citations (1)
| Title |
|---|
| 范黎明等: "潜孔锤钻进孔口密封器流场数值模拟及优化设计", 吉林大学学报(地球科学版), vol. 41, no. 02, pages 511 - 517 * |
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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 | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20191112 |