CN105041255A - Hole bottom combined drilling tool used for fishing broken falling objects in drilled hole and fishing method of hole bottom combined drilling tool - Google Patents
Hole bottom combined drilling tool used for fishing broken falling objects in drilled hole and fishing method of hole bottom combined drilling tool Download PDFInfo
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- CN105041255A CN105041255A CN201510489611.1A CN201510489611A CN105041255A CN 105041255 A CN105041255 A CN 105041255A CN 201510489611 A CN201510489611 A CN 201510489611A CN 105041255 A CN105041255 A CN 105041255A
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Abstract
The invention provides a hole bottom combined drilling tool used for fishing broken falling objects in a drilled hole and a fishing method of the hole bottom combined drilling tool. The drilling tool at least comprises a double-wall drilling tool body, a gas-water mixing device, a single-wall drilling tool body and a fishing cylinder. The lower end of the outer wall of the double-wall drilling tool body is connected with the gas-water mixing device. The lower end of the inner wall of the double-wall drilling tool body is connected with the single-wall drilling tool body. The fishing cylinder is arranged at the lower end of the single-wall drilling tool body and comprises a connector, a cylinder body, steel wire ropes and cutting teeth. The upper end of the cylinder is connected with the drilling tool through the connector. The cutting teeth are arranged on the edge of the lower end of the cylinder body. At least one layer of fishing net composed of the steel wire ropes is arranged in the cylinder body. By means of the hole bottom combined drilling tool and the fishing method, according to the gas lift reverse circulation principle, the broken falling objects in the hole are fished with the help of the strong suction effect generated at the bottom of the hole. The fishing cylinder is simpler in structure, low cost, and wide in application range, continuous fishing can be achieved, the number of drilling times is decreased, and the fishing efficiency is effectively improved.
Description
Technical field
The present invention relates to the technical field of probing, particularly relate to a kind of salvage boring in junk in small, broken bits hole at the bottom of way-type drilling unit and Refloatation method thereof.
Background technology
The method of one or many reaming that the construction of large diameter borehole (>=Ф 450mm) hard rock section is general to be adopted " bradawl is beaten, wammel expand " i.e., has mainly come with rock bit, mud normal circulation technology (or gas lift reverse circulation technique).In order to reduce construction cost, the major diameter tri-cone rotary drill bit for hole enlarging adopted is that the second-hand rock bit (only employing 1/3 of its life-span in oil drilling) reclaimed by oil drilling industry forms according to certain rule again assembling combination after cutting, reparation mostly, creep in work progress in reaming, more common drilling accident is that the bit leg of tri-cone rotary drill bit for hole enlarging comes off.Also have because the irregular objects in small, broken bits such as some wings, pincers tooth, slip insert, small instruments and tools can be fallen in hole by drill site workman accidentally.Through probing industry to the continuous accumulation of fish accident process experience in hole, in this type of chip piece bores of current process, the Method and kit for of fish accident also has a lot, such as: tackle all problems at once, tackle all problems at once salvage indigo plant, injection suction-type reacting cycle salvaging indigo plant, hydrostatic pressure litter latch jack, ignition formula brute force gaslift fisher, fisher of coring, reacting cycle shaft bottom cleaning device, bitubular steel wire dipper, fluid power fisher etc. with local reverse-circulation salvaging indigo plant, moving-magnetic type reacting cycle salvaging indigo plant, reacting cycle at the bottom of brill fishing cup, magnetic fishing tool, hole.
The above-mentioned Refloatation method of comparative analysis and instrument, a lot of method adopts reverse circulating principle to salvage, wherein, the powerful gaslift Refloatation method of ignition formula can set up the complete opening reacting cycle passage of moment, facts have proved that the method salvages efficiency under huge differential pressure action very high, but be only applicable to use in bore hole in sleeve pipe or cleaner; Other reacting cycle Refloatation method sets up local reverse-circulation at the bottom of hole by special fishing socket structure to implement fishing.The above reacting cycle Refloatation method all can not realize continuous salvaging, namely have in hole during the sediments such as thicker mud and landwaste and need bore at the bottom of flushing hole first down, and then fishing is implemented by lower brill.
Gas lift reverse circulation drilling process Shi Yuan Ministry of Geology and Mineral Resources " the Seventh Five-Year Plan " to " 95 " items generalized by science and technology production generalize item, gas lift reverse circulation general principle is: compressed air is delivered to gas-water mixer by supply air line, air is mixed with the water in drilling rod, thus formation proportion is less than the gas and liquid mixture note of managing outer liquid.Gas lift reverse circulation drilling process based on this principle can set up the reacting cycle passage of complete opening, and at the bottom of hole, form strong swabbing action, and in reduce orifice, the repetition of landwaste is broken, improves drilling efficiency.Show through practice: under same formation condition, gas-lift reverses circulation is higher than conventional mud rotary drilling efficiency 2 ~ 3 times.Along with increasing of large diameter borehole object of construction production in recent years, gas lift reverse circulation drilling process is progressively promoted and is come in large diameter borehole construction, and a lot of unit in charge of construction has been equipped with large gauge (>=Ф 140/80mm) double-wall drill pipe to strengthen the market competitiveness of our unit at present.Therefore, the salvaging that the large gauge double-wall drill pipe utilizing this technique to be equipped with carries out object in small, broken bits in hole has good material base.
For this reason, designer of the present invention is because the defect of above-mentioned Refloatation method, by concentrating on studies and designing, comprehensive experience and the achievement being engaged in related industry for a long time for many years, research and design go out a kind of based on gas lift reverse circulation principle utilize large gauge double wall drill tool carry out salvage boring in junk in small, broken bits hole at the bottom of way-type drilling unit and Refloatation method thereof, to overcome above-mentioned defect.
Summary of the invention
The object of the present invention is to provide a kind of salvage boring in junk in small, broken bits hole at the bottom of way-type drilling unit and Refloatation method thereof, it designs based on gas lift reverse circulation principle, the continuous salvaging of object in small, broken bits can be realized, improve and salvage efficiency, thus save time cost and financial cost.
For solving the problem, the invention discloses a kind of salvage boring in junk in small, broken bits hole at the bottom of way-type drilling unit, at least comprise double wall drill tool, gas-water mixer, single wall drilling tool and fishing socket, it is characterized in that:
The outer wall lower end of described double wall drill tool connects described gas-water mixer, and inwall lower end connects described single wall drilling tool, and the lower end of described single wall drilling tool is provided with described fishing socket;
Described fishing socket comprises joint, cylindrical shell, wire rope and cutting teeth, and the upper end of described cylindrical shell connects drilling tool by joint, and its lower edge is provided with multiple cutting teeth, is provided with the fishing net that at least one deck is made up of many wire rope in described cylindrical shell.
Wherein: wire rope and barrel soldering are fixed with brazing mode, thus formed radial net structure after being punched in advance and penetrate with the diametric(al) of cylindrical shell according to certain angle interval from cylindrical shell bottom by many wire rope by each layer fishing net.
Wherein: described cutting teeth is post alloy, cylindrical shell lower end outward flange is evenly distributed on.
Wherein: the outer surface of described cylindrical shell is provided with wear-resistant strip.
Wherein: described wear-resistant strip is set to rise around cylindrical shell side helical form.
Wherein: the upper end of described double wall drill tool connects a gas box or connects double-walled air water tap by double-walled kelly bar.
Also disclose the Refloatation method of way-type drilling unit at the bottom of the hole of salvaging junk in small, broken bits in boring, comprise following steps:
A. way-type drilling unit at the bottom of hole is transferred the position to 1m ~ 2m above junk in small, broken bits;
B. way-type drilling unit at the bottom of hole is connected with manifold of ground such as ground injecting gas pipeline, deslagging pipelines, and waterflood-transmission line is connected with orifice tube;
C. gas lift reverse circulation passage is set up;
D. the slow-speed of revolution is adopted, continue slowly way-type drilling unit at the bottom of lower discharge hole, carry out gas lift reverse circulation brute force to salvage at junk place in small, broken bits, under annular fluid constantly drives to the flow at high speed of salvaging bucket inside, clean out the sediment such as mud and landwaste be deposited on above junk in small, broken bits, and sediment is carried into ground along double wall drill tool inner pipe passway;
F. become clean when returning water outlet, show that the sediment such as mud and landwaste of hole bottom sediments has been cleaned out, now adopt the slow-speed of revolution, the mode of light pressure, slowly way-type drilling unit at the bottom of described hole is continued to press under hole, under the induced effect of high-velocity fluid, broken for hole ins and outs junk is pressed into described fishing socket, and enter junk at the bottom of the hole in described fishing socket, if its maximum gauge is less than double wall drill tool internal diameter, very likely directly be carried into ground, comparatively junk at the bottom of macropore judges whether to enter fishing socket by the drilling tool that rises and falls up and down, after confirming that junk enters fishing socket, stop operating drilling tool, stop air compressor machine air feed, pull out of hole.
Wherein: in step c, start air compressor machine, open gas injection valve through air inlet port to injecting compressed air in hole, simultaneously through water filling port continuous water filling in hole of orifice tube, when slag-drip opening occurs returning water, namely complete gas lift reverse circulation Path Setup.
Known by said structure, at the bottom of the hole of the interior junk in small, broken bits of salvaging boring of the present invention, way-type drilling unit and Refloatation method thereof have following effect:
1, fishing socket structure is more simple, with low cost, widely applicable;
2, continuous salvaging can be realized, effectively improve and salvage efficiency.
Detailed content of the present invention obtains by explanation described later and institute's accompanying drawing.
Accompanying drawing explanation
Fig. 1 shows the structural representation salvaging the first embodiment of way-type drilling unit at the bottom of the hole of junk in small, broken bits in boring of the present invention.
Fig. 2 shows the structural representation salvaging the second embodiment of way-type drilling unit at the bottom of the hole of junk in small, broken bits in boring of the present invention.
Fig. 3 is bailers structural representation of the present invention;
Fig. 4 is bailers structure upward view of the present invention.
Reference numeral:
1. gas box; 2. air inlet port; 3. water filling port; 4. double wall drill tool; 5. gas-water mixer; 6. common single wall drilling tool; 7. fishing socket; 8. double-walled kelly bar; 9. rotating disk; 10. double-walled air water tap; 701. joint; 702. cylindrical shell; 703. wire rope; 704. reinforcing rib; 705. wear-resistant strip; 706. cutting teeth.
Detailed description of the invention
The invention provides a kind of salvage boring in junk in small, broken bits hole at the bottom of way-type drilling unit and Refloatation method thereof, be the salvaging utilizing gas lift reverse circulation technological principle to implement junk in small, broken bits in hole, disclose drilling assembly, special fishing socket structure and Refloatation method basic step at the bottom of the hole of this Refloatation method use.Below in conjunction with the drawings and specific embodiments, the present invention is described in detail.
See Fig. 1 and Fig. 2, at the bottom of the hole of the interior junk in small, broken bits of salvaging boring of the present invention, way-type drilling unit at least comprises double wall drill tool 4, gas-water mixer 5, single wall drilling tool 6 and fishing socket 7, wherein, the outer wall lower end of described double wall drill tool 4 connects described gas-water mixer 5, inwall lower end connects described single wall drilling tool 6, and the lower end of described single wall drilling tool 6 is provided with described fishing socket 7.
For realizing object of the present invention, see Fig. 3 and Fig. 4, described fishing socket mainly comprises joint 701, cylindrical shell 702, wire rope 703 and cutting teeth 706, the upper end of described cylindrical shell 702 is connected to drilling tool by joint 701, its lower edge is provided with multiple cutting teeth 706, optionally, described cutting teeth 706 is post alloy, be evenly distributed on cylindrical shell 702 lower end outward flange, fixed form can be soldering, brazing mode can be brazing, the fishing net that at least one deck is made up of many wire rope 703 is provided with in described cylindrical shell 702, wherein, as shown in Figure 4, after each layer fishing net punches in advance and penetrates with the diametric(al) of cylindrical shell 702 according to certain angle interval from cylindrical shell 702 bottom by many wire rope 703, with brazing mode, wire rope 703 and cylindrical shell 702 are welded and fixed, thus form radial net structure, preferably, along cylindrical shell 702 axial direction, described fishing net arranges that one deck or two layers get junk instrument as card.
Optionally, the periphery of described joint 701 is also provided with multiple reinforcing rib 704 being connected to cylindrical shell 702, to provide better bonding strength, the outer surface of described cylindrical shell 702 also can be provided with wear-resistant strip 705, there is provided anti-wear performance to improve cylindrical shell outer rim, wherein, described wear-resistant strip 705 is set to rise around cylindrical shell 702 side helical form, higher than wear-resistant strip 705 abrasion resistant effect of annular, wear time and intensity all improve more than 30%.
See Fig. 1, in the first embodiment, the upper end of described double wall drill tool 4 connects a gas box 1, see Fig. 2, in the second embodiment, the upper end of described double wall drill tool 4 connects double-walled air water tap 10 by double-walled kelly bar 8, to coordinate different rigs respectively, improve the scope of application.
The Refloatation method salvaging way-type drilling unit at the bottom of the hole of junk in small, broken bits in boring of the present invention mainly comprises following steps:
A. way-type drilling unit at the bottom of hole is transferred the position to 1m ~ 2m above junk in small, broken bits;
Wherein, if rig unit head truck-mounted drilling rig (or top drive churn), under enter to comprise way-type drilling unit at the bottom of the hole of gas box 1; If rig rotary disk driller, under enter to comprise way-type drilling unit at the bottom of the hole of double-walled kelly bar 8 and double-walled air water tap 10.
B. connect manifold of ground, way-type drilling unit at the bottom of hole is connected with manifold of ground such as ground injecting gas pipeline, deslagging pipelines, and waterflood-transmission line is connected with orifice tube; Both as shown in the figure, air inlet port 2 can be connected to gas box 1 or double-walled air water tap 10, and arrange aperture water filling port 3 and sealed tube, certainly, those skilled in the art can carry out suitable setting as required, to adapt to different demands.
C. set up gas lift reverse circulation passage, start air compressor machine, open gas injection valve through air inlet port 2 to injecting compressed air in hole, simultaneously through water filling port 3 continuous water filling in hole of orifice tube, when slag-drip opening occurs returning water, namely complete gas lift reverse circulation Path Setup;
D. the slow-speed of revolution is adopted, continue slowly way-type drilling unit at the bottom of lower discharge hole, situation of change that is artificial or detection driller instrument the pressure of the drill automatically is to judge junk precision holes deep location, after junk position is determined, carry out gas lift reverse circulation brute force to salvage at junk place in small, broken bits, under annular fluid constantly drives to the flow at high speed of salvaging bucket inside, clean out sediments such as being deposited on mud above junk in small, broken bits and landwaste, and sediment is carried into ground along double wall drill tool inner pipe passway;
F. become clean when returning water outlet, show that the sediment such as mud and landwaste of hole bottom sediments has been cleaned out, now adopt the slow-speed of revolution, the mode of light pressure, slowly way-type drilling unit at the bottom of described hole is continued to press under hole, under the induced effect of high-velocity fluid, broken for hole ins and outs junk is pressed into described fishing socket, and enter junk at the bottom of the hole in described fishing socket, if its maximum gauge is less than double wall drill tool internal diameter, very likely directly be carried into ground, comparatively junk at the bottom of macropore judges whether to enter fishing socket by the drilling tool that rises and falls up and down, after confirming that junk enters fishing socket, stop operating drilling tool, stop air compressor machine air feed, pull out of hole, in trip-out process, lift under effect at the wire rope 703 of fishing socket 7 and ensure that the junk in small, broken bits entered in cylinder can not be fallen at the bottom of hole again.
Compared with prior art, beneficial effect of the present invention: fishing socket structure is more simple, and cost is also cheap, and can realize continuous salvaging, effectively improves and salvages efficiency.
It is evident that, above description and record be only citing instead of in order to limit disclosure of the present invention, application or use.Although described in an embodiment and be described in the drawings embodiment, but the present invention do not limit by accompanying drawing example and describe in an embodiment as the optimal mode thought at present to implement the specific examples of instruction of the present invention, scope of the present invention will comprise any embodiment of manual and the appended claim fallen into above.
Claims (8)
1. salvage a way-type drilling unit at the bottom of the hole of junk in small, broken bits in boring, at least comprise double wall drill tool, gas-water mixer, single wall drilling tool and fishing socket, it is characterized in that:
The outer wall lower end of described double wall drill tool connects described gas-water mixer, and inwall lower end connects described single wall drilling tool, and the lower end of described single wall drilling tool is provided with described fishing socket;
Described fishing socket comprises joint, cylindrical shell, wire rope and cutting teeth, and the upper end of described cylindrical shell connects drilling tool by joint, and its lower edge is provided with multiple cutting teeth, is provided with the fishing net that at least one deck is made up of many wire rope in described cylindrical shell.
2. way-type drilling unit at the bottom of hole as claimed in claim 1, it is characterized in that: after each layer fishing net is punched in advance and penetrate with the diametric(al) of cylindrical shell according to certain angle interval from cylindrical shell bottom by many wire rope, with brazing mode, wire rope and barrel soldering are fixed, thus form radial net structure.
3. way-type drilling unit at the bottom of hole as claimed in claim 1, is characterized in that: described cutting teeth is post alloy, is evenly distributed on cylindrical shell lower end outward flange.
4. way-type drilling unit at the bottom of hole as claimed in claim 1, is characterized in that: the outer surface of described cylindrical shell is provided with wear-resistant strip.
5. way-type drilling unit at the bottom of hole as claimed in claim 4, is characterized in that: described wear-resistant strip is set to rise around cylindrical shell side helical form.
6. as way-type drilling unit at the bottom of the hole as described in arbitrary in claim 1-5, it is characterized in that: the upper end of described double wall drill tool connects a gas box or connects double-walled air water tap by double-walled kelly bar.
7., as the Refloatation method of way-type drilling unit at the bottom of the hole of junk in small, broken bits in the salvaging boring as described in arbitrary in claim 1-6, comprise following steps:
A. way-type drilling unit at the bottom of hole is transferred the position to 1m ~ 2m above junk in small, broken bits;
B. way-type drilling unit at the bottom of hole is connected with manifold of ground such as ground injecting gas pipeline, deslagging pipelines, and waterflood-transmission line is connected with orifice tube;
C. gas lift reverse circulation passage is set up;
D. the slow-speed of revolution is adopted, continue slowly way-type drilling unit at the bottom of lower discharge hole, carry out gas lift reverse circulation brute force to salvage at junk place in small, broken bits, under annular fluid constantly drives to the flow at high speed of salvaging bucket inside, clean out the sediment such as mud and landwaste be deposited on above junk in small, broken bits, and sediment is carried into ground along double wall drill tool inner pipe passway;
F. become clean when returning water outlet, show that the sediment such as mud and landwaste of hole bottom sediments has been cleaned out, now adopt the slow-speed of revolution, the mode of light pressure, slowly way-type drilling unit at the bottom of described hole is continued to press under hole, under the induced effect of high-velocity fluid, broken for hole ins and outs junk is pressed into described fishing socket, and enter junk at the bottom of the hole in described fishing socket, if its maximum gauge is less than double wall drill tool internal diameter, very likely directly be carried into ground, comparatively junk at the bottom of macropore judges whether to enter fishing socket by the drilling tool that rises and falls up and down, after confirming that junk enters fishing socket, stop operating drilling tool, stop air compressor machine air feed, pull out of hole.
8. Refloatation method as claimed in claim 7, it is characterized in that: in step c, start air compressor machine, open gas injection valve through air inlet port to injecting compressed air in hole, simultaneously through water filling port continuous water filling in hole of orifice tube, when slag-drip opening occurs returning water, namely complete gas lift reverse circulation Path Setup.
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| CN201510489611.1A CN105041255A (en) | 2015-08-11 | 2015-08-11 | Hole bottom combined drilling tool used for fishing broken falling objects in drilled hole and fishing method of hole bottom combined drilling tool |
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| CN201510489611.1A CN105041255A (en) | 2015-08-11 | 2015-08-11 | Hole bottom combined drilling tool used for fishing broken falling objects in drilled hole and fishing method of hole bottom combined drilling tool |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105863536A (en) * | 2016-05-30 | 2016-08-17 | 天津探矿机械有限公司 | Gas-lift reverse circulation drill rod |
| CN106837232A (en) * | 2017-01-23 | 2017-06-13 | 中国人民解放军63666部队 | One kind salvages drill bit and fishing device |
| CN107165598A (en) * | 2017-06-01 | 2017-09-15 | 中国石油天然气股份有限公司 | Cable spasm device |
| CN108533197A (en) * | 2018-03-13 | 2018-09-14 | 林继承 | A kind of oil well mine wall exploitation impurity method for cleaning |
| CN108716218A (en) * | 2018-07-11 | 2018-10-30 | 广西建工集团第建筑工程有限责任公司 | A kind of fishing device of punching drilling machine pile monkey |
| CN109113616A (en) * | 2017-06-26 | 2019-01-01 | 中国石油天然气股份有限公司 | Formation particle processing method |
| CN110578490A (en) * | 2019-09-27 | 2019-12-17 | 中煤科工集团西安研究院有限公司 | electromagnetic fishing system for large-diameter engineering well and special cable thereof |
| CN112282687A (en) * | 2020-11-12 | 2021-01-29 | 山东省邱集煤矿有限公司 | Method for quickly salvaging drill bit and drill bit salvaging device |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105863536A (en) * | 2016-05-30 | 2016-08-17 | 天津探矿机械有限公司 | Gas-lift reverse circulation drill rod |
| CN106837232A (en) * | 2017-01-23 | 2017-06-13 | 中国人民解放军63666部队 | One kind salvages drill bit and fishing device |
| CN107165598A (en) * | 2017-06-01 | 2017-09-15 | 中国石油天然气股份有限公司 | Cable spasm device |
| CN109113616A (en) * | 2017-06-26 | 2019-01-01 | 中国石油天然气股份有限公司 | Formation particle processing method |
| CN109113616B (en) * | 2017-06-26 | 2021-11-30 | 中国石油天然气股份有限公司 | Method for treating formation sand |
| CN108533197A (en) * | 2018-03-13 | 2018-09-14 | 林继承 | A kind of oil well mine wall exploitation impurity method for cleaning |
| CN108533197B (en) * | 2018-03-13 | 2020-09-22 | 浙江蓝特新能源科技股份有限公司 | Method for cleaning impurities generated in mining of petroleum well wall |
| CN108716218A (en) * | 2018-07-11 | 2018-10-30 | 广西建工集团第建筑工程有限责任公司 | A kind of fishing device of punching drilling machine pile monkey |
| CN110578490A (en) * | 2019-09-27 | 2019-12-17 | 中煤科工集团西安研究院有限公司 | electromagnetic fishing system for large-diameter engineering well and special cable thereof |
| CN112282687A (en) * | 2020-11-12 | 2021-01-29 | 山东省邱集煤矿有限公司 | Method for quickly salvaging drill bit and drill bit salvaging device |
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Application publication date: 20151111 |