CN106437594A - Fishing device and method of downhole HDPE (High-Density Polyethylene) well pipe of brine well - Google Patents
Fishing device and method of downhole HDPE (High-Density Polyethylene) well pipe of brine well Download PDFInfo
- Publication number
- CN106437594A CN106437594A CN201610897946.1A CN201610897946A CN106437594A CN 106437594 A CN106437594 A CN 106437594A CN 201610897946 A CN201610897946 A CN 201610897946A CN 106437594 A CN106437594 A CN 106437594A
- Authority
- CN
- China
- Prior art keywords
- fisher
- well
- well casing
- fishing device
- hdpe
- 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
- 229920001903 high density polyethylene Polymers 0.000 title claims abstract description 49
- 239000004700 high-density polyethylene Substances 0.000 title claims abstract description 49
- 238000000034 method Methods 0.000 title claims abstract description 20
- 239000012267 brine Substances 0.000 title abstract description 4
- HPALAKNZSZLMCH-UHFFFAOYSA-M sodium;chloride;hydrate Chemical compound O.[Na+].[Cl-] HPALAKNZSZLMCH-UHFFFAOYSA-M 0.000 title abstract description 4
- 238000005553 drilling Methods 0.000 claims abstract description 28
- 230000000694 effects Effects 0.000 claims description 2
- 230000005484 gravity Effects 0.000 claims description 2
- 230000000630 rising effect Effects 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 5
- 239000004698 Polyethylene Substances 0.000 description 3
- -1 polyethylene Polymers 0.000 description 3
- 229920000573 polyethylene Polymers 0.000 description 3
- 150000003839 salts Chemical class 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 229910001018 Cast iron Inorganic materials 0.000 description 1
- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical compound C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 description 1
- 239000005977 Ethylene Substances 0.000 description 1
- 241001074085 Scophthalmus aquosus Species 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 238000010009 beating Methods 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 239000008358 core component Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000011152 fibreglass Substances 0.000 description 1
- 229910052736 halogen Inorganic materials 0.000 description 1
- 150000002367 halogens Chemical class 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 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
- E21B31/12—Grappling tools, e.g. tongs or grabs
- E21B31/20—Grappling tools, e.g. tongs or grabs gripping internally, e.g. fishing spears
-
- 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
- E21B17/00—Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Cables; Casings; Tubings
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Marine Sciences & Fisheries (AREA)
- Mechanical Engineering (AREA)
- Fishing Rods (AREA)
Abstract
The invention discloses a fishing device and method of a downhole HDPE (High-Density Polyethylene) well pipe of a brine well. The fishing device is formed by combining a drill rod and a fisher, wherein the fisher is movably connected with the drill rod, the two ends of the fisher can be clamped or penetrated into the inner wall of the fished well pipe, and a connecting fulcrum is arranged at the eccentric position of a plate of the fisher; a wedge-shaped guide head is arranged at the bottom end of the drill rod. The fishing method is described as follows: the drilling rod is connected with a drilling machine, the drilling machine is started, and the fishing device is placed into the well pipe by virtue of guiding of the wedge-shaped guide head, and the fisher contacts or rubs the wall of the well to rotate to a certain angle when the fishing device is placed into the well pipe, so that the fishing device can be placed into the well pipe in a way that the fisher closely clings to the well pipe; the drilling rod is lifted upwards, and fishing pulling force is transmitted to the fisher, so that the fished well pipe is clamped or jammed by the fisher; the drilling rod is lifted upwards continuously, the fished well pipe and the fisher are lifted at the same time, the action is continued, and the fished well pipe is fished out of the brine well finally. The fishing device has high success rate of fishing and can be smoothly placed into the well, and the fished well pipe can be successfully clamped or jammed by the fisher of the fishing device, so that the well pipe is fished smoothly.
Description
Technical field
The present invention relates to a kind of sub-salt well down-hole HDPE well casing fishing device and method, are mainly used in salvaging sub-salt well down-hole
Outlet pipe (well casing material：HDPE polyethylene).
Background technology
Downhole tools are salvaged and are always a professional difficult problem.Sub-salt well down-hole narrow space, main equipment is difficult to enter in well
Operation.In the big salt flat sub-salt well work progress in lenghu, need to gather from the Φ 160HDPE of underground fishing 40m to 100m length
Ethylene well casing.
In down-hole, as brine incrustation causes well casing to be stuck in shaft bottom inflexibly, it is little as above to put forward strength, it is difficult to by its unfreezing.
Referring to Fig. 7,6 locking well casing of down-hole salt crust block is illustrated.
Well casing is pulled out according to excavator or crane from well head strength, in most cases, well casing can be ruptured in down-hole.
If rethink and being risen and being pulled out with excavator or crane strength, due to more than ground no well casing exposure, no impetus, it is impossible to operate.Quilt
Pulling off also in water spray the well of well casing, very big trouble is caused to engineering.
At present, the country does not have ready-made marine salvage equipment available.
Content of the invention
The main object of the present invention is to provide a kind of fishing success ratio high sub-salt well down-hole HDPE well casing fishing device, should
Device can smoothly G.I.H, successful clamping or stuck salvaged well casing, realize the smooth salvaging of well casing.
For achieving the above object, the present invention takes following design：
A kind of sub-salt well down-hole HDPE well casing fishing device, which is combined by drilling rod and fisher and constitutes；
The fisher is connected with described drilling rod activeness；The fisher is two ends cocker/lunge in salvaged well casing
The functional configurations plate of wall, the fulcrum of the activeness connection is located on the eccentric position of the functional configurations plate.
In the sub-salt well down-hole HDPE well casing fishing device, wedge shape guide head is machined with the bottom of drilling rod.
In the sub-salt well down-hole HDPE well casing fishing device, process for card/lunge at the two ends of functional configurations plate
The sword of salvaged well casing inwall.
In the sub-salt well down-hole HDPE well casing fishing device, described functional configurations plate is arc plate, swing link, trapezoidal
Plate or triangular plate.
In the sub-salt well down-hole HDPE well casing fishing device, the thickness of slab of the fisher is 8～15mm.
In the sub-salt well down-hole HDPE well casing fishing device, the thickness of slab of the functional configurations plate is 10mm.
In the sub-salt well down-hole HDPE well casing fishing device, two end points of the maximum spacing of the functional configurations plate
Length is more than size and the not super 10mm of salvaged well casing diameter.
It is a further object of the present invention to provide a kind of well down-hole HDPE well casing Refloatation method of the high halogen of fishing success ratio, profit
Realize efficiently salvaging the HDPE well casing of down-hole (particularly sub-salt well down-hole) with above-mentioned fishing device.
For achieving the above object, the present invention takes following design：
A kind of sub-salt well down-hole HDPE well casing Refloatation method, using the sub-salt well down-hole HDPE well described in any one in above-mentioned
Pipe fishing device；The drilling rod of fishing device is connected with rig with engineering well-digging, starts rig directly or by wedge shape guide head
Guiding will enter under fishing device in sub-salt well well casing, under enter during, fisher touches or rubs the borehole wall, and fisher is in punching
Hit under power or frictional force effect and rotate to an angle so that fisher is close to enter under salvaged well casing；Drilling rod is above carried, and conduction is salvaged
Pulling force to fisher, fisher clamping or stuck by salvaged well casing；Drilling rod is carried in continuation, salvaged well casing is with fisher simultaneously
Rise, the persistently action, most salvaged well casing salvages sub-salt well at last.
In the sub-salt well down-hole HDPE well casing Refloatation method, when entering 8～10m in salvaged well casing under the fisher,
Enter under stopping, the fishing device is slowly above carried, the fisher action of the eccentric setting of the fishing device end, in the work of gravity
Start rotation with lower around fulcrum, until the sword that goes out at fisher two ends blocks/lunge salvaged well casing inwall, then slowly above carry
Fishing device, fisher stuck salvaged well casing inwall completely.
In the sub-salt well down-hole HDPE well casing Refloatation method, if above carry, the sword that goes out at fisher two ends fails firm card
Firmly/and lunge salvaged well casing inwall, then repeat decentralization, the action of fishing device is above proposed, until described fisher blocks completely
The inwall of extremely salvaged well casing.
It is an advantage of the invention that：
1. automatically upper can block, reliability height, fishing success ratio height；
2. ability is salvaged strong, maximum capacity 2000kg；
3. simple and practical, few easy workout part, convenient maintenance；
4. applied widely；
5. reusable.
Description of the drawings
Fig. 1 for HDPE well casing fishing device in sub-salt well down-hole of the present invention structural representation (arrow of in figure be oriented to beat
Drag for direction).
Fig. 2 is one example structure schematic diagram of fisher of the present invention (main view).
Fig. 3 is embodiment illustrated in fig. 2 structural representation (side-looking).
Fig. 4 is embodiment illustrated in fig. 2 structural representation (vertical view).
Fig. 5 is that fisher of the present invention is another example structure schematic diagram (main view).
Fig. 6 surrounds fulcrum circular motion schematic diagram for fisher of the present invention.
Fig. 7 is sub-salt well down-hole HDPE well casing fishing device work process schematic diagram of the present invention.
Fig. 8 be well in salt crust by well casing locking down-hole schematic diagram.
In figure：1- drilling rod；2-HDPE well casing；3- wall casing；4- fisher；401- through hole；5- wedge shape guide head；6- salt crust
Block；7- fixing bolt.
Below in conjunction with the accompanying drawings and specific embodiment is described in further details to the present invention.
Specific embodiment
Refering to shown in Fig. 1, one preferred embodiment of sub-salt well down-hole HDPE well casing fishing device of the present invention is mainly by drilling rod
1st, fisher 4 and wedge shape guide head 5 are constituted.
The drilling rod 1 is used for load-bearing and link fisher 4.
Can directly process in the bottom of 1 drilling rod of the drilling rod or a wedge shape guide head 5 is fixedly connected with, enter to salvage under being used for
It is oriented to during device, 45 degree of cutting angle is preferable.
The fisher 4 is a core component of the present invention, and for blocking salvaged well casing (HDPE well casing 2), which can
Directly processed by steel plate.The concrete structure of one embodiment is (including specification, unit：Mm) Fig. 2, Fig. 3 and Tu can be found in
4.Fisher maximum feature is：Eccentric setting, the eccentric position on fisher steel plate opens up through hole 401, and the fisher leads to
Cross fixing bolt 7 (or pin) to be fixed on drilling rod 1, during work, can pass around logical in the presence of very little frictional force
The fixing bolt (or pin) in hole 401 moves in a circle, referring to Fig. 6.
Preferably, sword can be processed at the two ends of fisher of the present invention so as to easily block/lunge in HDPE plastic well casing
Wall.
The dominant shape shape of the fisher 4 is can be found in shown in Fig. 2, and preferred embodiment is formed into the circular arc plate shape with straight flange,
Also crescent (referring to Fig. 5), trapezoidal or triangular plate can be made into, plate whatever, the rotation in its work process makes which
Can enter in salvaged HDPE well casing 2 with drilling rod, i.e. length L of 4 plate ultimate range two-end-point of fisher should be greater than being beaten
The size (and not super 10mm) of well casing diameter is dragged for, the width W of plate is less than the salvaged diameter for salvaging well casing.
The normal dia of existing sub-salt well down-hole HDPE well casing is generally adopted by 160mm, and the thickness of slab of the fisher is permissible
From 8～15mm of thickness；In a preferred embodiment of the present invention, the drill pipe diameter Φ 89 of employing, the long 175mm of fisher, fisher
Thickness of slab 10mm, the maximum capacity of fishing device can reach 2000kg.
Shown in Figure 7, HDPE well casing fishing device operation principle in sub-salt well down-hole of the present invention and process are：Using wedge shape
Guide head 5 is oriented to, it is ensured that enter salvaged well casing (well casing material under will be smooth for fisher 4：HDPE polyethylene)；Using beating
Dragging for device 4 carries out automatically upper the card, it is ensured that the salvaged HDPE well casing 2 of fishing device clamping.Using drilling rod 1 and the brill of well-digging engineering
Machine connects, and above carries drilling rod 1, and conduction salvages pulling force to described fisher 4, fisher clamping or stuck salvaged HDPE well casing
2.Drilling rod 1 is carried in continuation, and salvaged HDPE well casing 2 is slowly risen simultaneously with fisher 4, the persistently action, or before being repeated several times
Process (as clamping adverse conditions) is stated, until eventually needing to salvaged HDPE well casing 2 to salvage sub-salt well.
HDPE well casing fishing device in sub-salt well down-hole of the present invention is applied widely, is applicable not only to HDPE polyethylene well casing
Salvage, be equally applicable to the salvaging of cast iron pipe, stainless steel tube, glass reinforced plastic pipe and alloy pipe.Critical piece (drilling rod 1, fisher
4 and wedge shape guide head 5) shape and size can be mated according to salvaged well casing and be customized.
HDPE well casing fishing device simple structure in sub-salt well down-hole of the present invention, easy to process, few easy workout part, convenient maintenance.
It is particularly suitable for field wellbore construction field operation, and recyclable, reusable.
The various embodiments described above can in some changes in addition without departing from the scope of the invention, therefore above explanation included and
Structure shown in accompanying drawing should be regarded as exemplary, and be not used to limit the application patent protection domain.
Claims (10)
1. a kind of sub-salt well down-hole HDPE well casing fishing device, it is characterised in that：Which is combined by drilling rod and fisher and constitutes；
The fisher is connected with described drilling rod activeness；The fisher is two ends cocker/lunge salvaged well casing inwall
Functional configurations plate, the fulcrum of the activeness connection is located on the eccentric position of the functional configurations plate.
2. HDPE well casing fishing device in sub-salt well down-hole according to claim 1, it is characterised in that：Add in the bottom of drilling rod
Work has wedge shape guide head.
3. HDPE well casing fishing device in sub-salt well down-hole according to claim 1, it is characterised in that：In functional configurations plate
Two ends process the sword for the salvaged well casing inwall of card/lunge.
4. HDPE well casing fishing device in sub-salt well down-hole according to claim 1, it is characterised in that：Described functional configurations
Plate is arc plate, swing link, trapezoidal plate or triangular plate.
5. HDPE well casing fishing device in sub-salt well down-hole according to claim 4, it is characterised in that：The plate of the fisher
Thick is 8～15mm.
6. HDPE well casing fishing device in sub-salt well down-hole according to claim 4, it is characterised in that：The functional configurations plate
Thickness of slab be 10mm.
7. HDPE well casing fishing device in sub-salt well down-hole according to claim 1, it is characterised in that：The functional configurations plate
Maximum spacing two end points length more than the size of salvaged well casing diameter and not super 10mm.
8. a kind of sub-salt well down-hole HDPE well casing Refloatation method, using the sub-salt well down-hole described in any one in claim 1 to 7
HDPE well casing fishing device；It is characterized in that：The drilling rod of fishing device is connected with rig with engineering well-digging, starts rig direct
Or will enter under fishing device in sub-salt well well casing by the guiding of wedge shape guide head, under enter during, fisher is touched or is rubbed
The borehole wall is wiped, fisher is rotated to an angle under impulsive contact force or frictional force effect so that fisher is close to enter under salvaged well casing；
Drilling rod is above carried, and conduction salvages pulling force to fisher, fisher clamping or stuck by salvaged well casing；Drilling rod is carried in continuation, is beaten
Well casing is dragged for fisher while rising, the persistently action, most salvaged well casing salvages sub-salt well at last.
9. HDPE well casing Refloatation method in sub-salt well down-hole according to claim 8, it is characterised in that：Enter under the fisher
In salvaged well casing during 8～10m, enter under stopping, the fishing device is slowly above carried, the eccentric setting of the fishing device end
Fisher action, under gravity around fulcrum start rotation, until fisher two ends go out sword block/lunge salvaged
Well casing inwall, then slowly above carries fishing device, fisher stuck salvaged well casing inwall completely.
10. HDPE well casing Refloatation method in sub-salt well down-hole according to claim 9, it is characterised in that：If above carry, salvage
The sword that goes out at device two ends fails firmly to block/lunge salvaged well casing inwall, then repeat decentralization, above propose the action of fishing device,
Until the inwall of described fisher stuck salvaged well casing completely.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610897946.1A CN106437594A (en) | 2016-10-14 | 2016-10-14 | Fishing device and method of downhole HDPE (High-Density Polyethylene) well pipe of brine well |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610897946.1A CN106437594A (en) | 2016-10-14 | 2016-10-14 | Fishing device and method of downhole HDPE (High-Density Polyethylene) well pipe of brine well |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106437594A true CN106437594A (en) | 2017-02-22 |
Family
ID=58173686
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610897946.1A Pending CN106437594A (en) | 2016-10-14 | 2016-10-14 | Fishing device and method of downhole HDPE (High-Density Polyethylene) well pipe of brine well |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106437594A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107575181A (en) * | 2017-10-26 | 2018-01-12 | 中煤特殊凿井有限责任公司 | Pipeline fisher and its pipeline Refloatation method |
| CN114961622A (en) * | 2022-06-20 | 2022-08-30 | 石兴安 | Fishing tool |
| CN115569975A (en) * | 2022-09-20 | 2023-01-06 | 浙江本正环保科技有限公司 | Medicine injection pipe assembly, soil in-situ remediation device and medicine injection method |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2254951Y (en) * | 1996-04-20 | 1997-05-28 | 胜利石油管理局临盘采油厂 | Eccentric active cover type overshot for gripping sucker rod |
| CN202140057U (en) * | 2011-07-15 | 2012-02-08 | 克拉玛依新科澳石油天然气技术股份有限公司 | Underground instrument internal buckle fisher |
| CN202810746U (en) * | 2012-07-27 | 2013-03-20 | 中国石油集团长城钻探工程有限公司 | Spring-clip fishing tool special for coring tool |
| CN203531818U (en) * | 2013-10-18 | 2014-04-09 | 北京加华维尔能源技术有限公司 | Underground deblocking device |
| CN204851145U (en) * | 2015-08-28 | 2015-12-09 | 中国神华能源股份有限公司 | Trip spear device |
| US20160115757A1 (en) * | 2014-10-23 | 2016-04-28 | Beijing Hailan Science & Technology Development Co., Ltd. | Petroleum instrument salvaging system and salvaging head |
| CN206071515U (en) * | 2016-10-14 | 2017-04-05 | 中国地质调查局水文地质环境地质调查中心 | A kind of sub-salt well down-hole HDPE well casing fishing devices |
-
2016
- 2016-10-14 CN CN201610897946.1A patent/CN106437594A/en active Pending
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2254951Y (en) * | 1996-04-20 | 1997-05-28 | 胜利石油管理局临盘采油厂 | Eccentric active cover type overshot for gripping sucker rod |
| CN202140057U (en) * | 2011-07-15 | 2012-02-08 | 克拉玛依新科澳石油天然气技术股份有限公司 | Underground instrument internal buckle fisher |
| CN202810746U (en) * | 2012-07-27 | 2013-03-20 | 中国石油集团长城钻探工程有限公司 | Spring-clip fishing tool special for coring tool |
| CN203531818U (en) * | 2013-10-18 | 2014-04-09 | 北京加华维尔能源技术有限公司 | Underground deblocking device |
| US20160115757A1 (en) * | 2014-10-23 | 2016-04-28 | Beijing Hailan Science & Technology Development Co., Ltd. | Petroleum instrument salvaging system and salvaging head |
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| CN206071515U (en) * | 2016-10-14 | 2017-04-05 | 中国地质调查局水文地质环境地质调查中心 | A kind of sub-salt well down-hole HDPE well casing fishing devices |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107575181A (en) * | 2017-10-26 | 2018-01-12 | 中煤特殊凿井有限责任公司 | Pipeline fisher and its pipeline Refloatation method |
| CN107575181B (en) * | 2017-10-26 | 2019-08-27 | 中煤特殊凿井有限责任公司 | Pipeline fisher and its pipeline Refloatation method |
| CN114961622A (en) * | 2022-06-20 | 2022-08-30 | 石兴安 | Fishing tool |
| CN115569975A (en) * | 2022-09-20 | 2023-01-06 | 浙江本正环保科技有限公司 | Medicine injection pipe assembly, soil in-situ remediation device and medicine injection method |
| CN115569975B (en) * | 2022-09-20 | 2024-07-23 | 浙江本正环保科技有限公司 | Medicine injection pipe assembly, soil in-situ restoration device and medicine injection method |
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| C06 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
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Application publication date: 20170222 |