WO2013162488A2 - Engin de forage pour forer des puits - Google Patents
Engin de forage pour forer des puits Download PDFInfo
- Publication number
- WO2013162488A2 WO2013162488A2 PCT/UA2013/000044 UA2013000044W WO2013162488A2 WO 2013162488 A2 WO2013162488 A2 WO 2013162488A2 UA 2013000044 W UA2013000044 W UA 2013000044W WO 2013162488 A2 WO2013162488 A2 WO 2013162488A2
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- cavitator
- drilling
- drill
- diffuser
- cylindrical section
- Prior art date
Links
- 238000005553 drilling Methods 0.000 title claims abstract description 77
- 239000011435 rock Substances 0.000 claims abstract description 47
- 239000012530 fluid Substances 0.000 claims abstract description 35
- 238000005520 cutting process Methods 0.000 claims abstract description 31
- 239000003381 stabilizer Substances 0.000 claims abstract description 12
- 238000011010 flushing procedure Methods 0.000 claims description 25
- 238000005406 washing Methods 0.000 claims description 17
- 230000010349 pulsation Effects 0.000 claims description 9
- 238000005265 energy consumption Methods 0.000 abstract description 5
- 238000005065 mining Methods 0.000 abstract description 4
- 238000000034 method Methods 0.000 description 18
- 239000007788 liquid Substances 0.000 description 13
- 230000003068 static effect Effects 0.000 description 5
- 230000015572 biosynthetic process Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000000725 suspension Substances 0.000 description 2
- 230000001154 acute effect Effects 0.000 description 1
- 210000000988 bone and bone Anatomy 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 230000001066 destructive effect Effects 0.000 description 1
- 229910003460 diamond Inorganic materials 0.000 description 1
- 239000010432 diamond Substances 0.000 description 1
- ZZUFCTLCJUWOSV-UHFFFAOYSA-N furosemide Chemical compound C1=C(Cl)C(S(=O)(=O)N)=CC(C(O)=O)=C1NCC1=CC=CO1 ZZUFCTLCJUWOSV-UHFFFAOYSA-N 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000010355 oscillation Effects 0.000 description 1
- 230000000737 periodic effect Effects 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 238000011144 upstream manufacturing Methods 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
- E21B7/00—Special methods or apparatus for drilling
- E21B7/24—Drilling using vibrating or oscillating means, e.g. out-of-balance masses
Definitions
- the invention relates to mining, and in particular to devices for drilling wells in strong and ultra-hard rocks.
- Drilling is carried out by applying static loads to the rock cutting tool and rotation.
- a disadvantage of the known devices is that the rock cutting tool when sinking hard and superhard rocks quickly collapses, which requires frequent replacement and reduces the productivity of the drilling process.
- the most promising is the vibrational-rotational method of drilling, in which longitudinal oscillations of high frequency and intensity are additionally created on the rock cutting tool.
- the advantage of this method is that it combines the properties of vibrational and rotational drilling methods. In combined failure, not only static forces act on the rocks, but also dynamic shock pulses (short-term dynamic loads).
- a drilling hydraulic monitor bit comprising a body with working bodies and flushing channels equipped with nozzles and secured to it by means of a suspension ball, the bit being equipped with a diffuser installed in its flushing channel, the diameter of the passage section of which is larger than the diameter of the ball, and the ball is placed in the cavity of the diffuser, and the suspension is made elastic (“Drilling hydraulic monitor bit” SU1148957 dated 04/07/1985, ⁇ 21 ⁇ 10 / 18).
- the balls make longitudinal - transverse vibrations in the diffusers, which creates a pulsation of the fluid pressure.
- the known design allows to increase the destruction efficiency of hard and super hard rocks by creating additional frequency fluctuations.
- a disadvantage of the known bit is that it contains moving parts and elastic elements, which significantly reduces its reliability.
- the known design does not allow you to create high-frequency vibrations, which leads to a low drilling speed and low productivity when drilling hard and superhard rocks.
- a drill for drilling wells containing a drill pipe string including a rock cutting tool made with through holes for the outlet of the washing fluid, and a hydraulic vibrator for converting the stationary flow of the washing fluid into a pulsating stream having an internal cavitator made in the form of a nozzle, the flow channel of which includes a cylindrical section with a critical diameter D cr and an expanding section - d ffuzor, and a hollow body disposed for cavitator ( "Method for drilling wells and device for its implementation», SU1496351 on 07/01/1991 E21V10 / 18).
- a known device for drilling wells includes a housing with flushing channels, the output of which is installed nozzles.
- the cavitator is made in the form of a narrowing section of the washing channel expanding in the direction of movement of the washing liquid.
- the total area of the outlet sections of the nozzles exceeds the critical section area of the generator by 1.1 - 3.0 times.
- the process of drilling using a well-known The device is implemented due to the impact of pulsating jets of flushing fluid on the rock.
- the disadvantages of the known device are low productivity and high energy intensity of the process due to the low drilling speed, which is especially pronounced when drilling deep wells in hard and ultra-hard rocks.
- the basis of the invention is the task of creating such a drill for drilling wells, the use of which would increase the drilling speed, reduce energy consumption and, thus, increase the productivity of the drilling process.
- a drill for drilling wells containing a string of drill pipes including a rock cutting tool made with feedthrough holes for the outlet of the flushing fluid, and a hydraulic vibrator, for converting the stationary flow of flushing fluid into a pulsating flow having an internal cavitator made in in the form of a nozzle, the flow channel of which includes a cylindrical section with a critical diameter ⁇ and an expanding section - a diffuser, as well as a hollow body located behind cavitator, according to the invention
- the total area Si of the through holes of the rock cutting tool is 7-10 times larger than the cross-sectional area S of the cylindrical section of the flow channel of the cavitator
- a stabilizer of the flow of flushing fluid is installed on
- the inventive combination of features allows you to create conditions for drilling wells, which ensures the equalization of the velocity field at the entrance to the cylindrical section, in which a continuous flow of liquid breaks, cavitation cavities that exit into the cavitator diffuser arise and grow to maximum sizes, periodically come off and collapse (close) h in the high pressure zone, which causes periodic pressure fluctuations in the flow channel of the hydraulic vibrator.
- the stationary flow of flushing fluid is converted into a high-frequency pulsating flow with a high level of pressure.
- the maximum pressure in the pulse is several times higher than the pressure of the stationary flow of flushing fluid at the inlet to the cylindrical section of the cavitator.
- the indicated ratios of the area of the passage openings of the nozzles of the rock cutting tool to the area of the cylindrical section of the cavitator ensures the operation of the hydraulic vibrator at any depths, since they provide minimal hydraulic losses in the passage openings of the rock cutting tool, and the necessary pressure is provided only by pressure at the bottom of the well. Part of the energy of the pulsating fluid flow is converted into longitudinal vibrations of the hydraulic vibrator body and creates additional dynamic loads on the rock cutting tool.
- the pressure in the hydrodynamic pulse is significantly reduced and the drilling efficiency using the inventive drill is significantly reduced.
- the inventive drill for drilling allows you to increase the speed of drilling, reduce energy consumption and increase productivity of the drilling process
- the invention has additional differences that create an additional technical result.
- a hydraulic vibrator can be installed in the string above the rock cutting tool.
- This arrangement of the hydraulic vibrator provides the most effective coreless drilling.
- a hydraulic vibrator can be installed in the string above the core drill pipe.
- This hydraulic vibrator arrangement provides the most efficient core drilling.
- the selected values of the aperture angle a of the diffuser were established empirically and provide the most effective drilling when receiving pulsations of the flushing fluid with a constant frequency, which does not depend on the pressure at the entrance to the cylindrical section of the flow channel of the cavitator.
- the selected values of the aperture angle a of the diffuser were determined empirically and provide the most effective drilling when obtaining pulsations of the flushing fluid in a wide frequency range due to a change in pressure at the inlet to the cylindrical section of the flow channel of the cavitator.
- the hydraulic vibrator in the drill for drilling wells can be made prefabricated in the form of a hollow body connected to the cavitator using a threaded connection.
- the values of the rounding radii Ri and R 2 are determined empirically and are optimal for this design of the cavitator and hydraulic vibrator, as they provide optimal conditions for the appearance of caverns at the very entrance to the cylindrical section and for the formation of large volumes of caverns in the cavitator diffuser.
- the claimed invention allows you to convert a stationary stream of washing liquid into a high-frequency pulsating stream.
- the energy of the high-frequency pulsating flow creates additional high-frequency dynamic longitudinal loads on the rock cutting tool, under the influence of which the rock begins to collapse even at minimal static loads, which allows to increase the drilling speed, increase productivity, reduce energy consumption and generally increase drilling efficiency.
- FIG. 1 shows a drill for drilling wells, a General view, a longitudinal section.
- FIG. 2 shows a hydraulic vibrator of a drill for drilling wells, a general view, a longitudinal section.
- FIG. 3 shows a cavitator of a hydraulic vibrator of a drill for drilling wells, a general view, a longitudinal section.
- FIG. 4 shows the remote element G in FIG. 3.
- FIG. 5 shows a drill for drilling wells (for core drilling), a general view, a longitudinal section.
- a drill for drilling wells comprises a drill pipe string 1 (Fig. 1), including a rock cutting tool 3 made with through holes 4 for flushing fluid, and a hydraulic vibrator 5 (Fig. 1, 2), for converting a stationary flow of washing liquid into a pulsating flow having an internal cavitator 6 (Fig. 1, 3), made in the form of a nozzle, the flow channel 7 of which includes a cylindrical section 8 with a critical diameter ⁇ and an expanding section - a diffuser 9, as well as a hollow body 10 located behind avitatorom 6.
- a stabilizer 11 of the flow of washing liquid made in the form of a sleeve.
- the inner diameter of the stabilizer 11 d is 2-3 critical diameters ⁇ of the cylindrical section 8 of the cavitator 6, and the length L ⁇ is 10 - 15 of its inner diameters d.
- the diameter D 2 of the hollow body 10 of the hydraulic vibrator 5 is equal to the diameter Di of the output section of the diffuser 9 of the cavitator 6, and the length L 2 of the hollow body 10 of the hydraulic vibrator 5 is at least 90-1 10 critical diameters ⁇ of the cylindrical section 8 of the cavitator 6.
- the hydraulic vibrator 5 When coreless drilling, the hydraulic vibrator 5 is installed in the column 1 above the rock cutting tool 3 (Fig. 1).
- the hydraulic vibrator 5 When core drilling, the hydraulic vibrator 5 is installed in the column 1 above the core drill pipe 12 (Fig. 5).
- the hydraulic vibrator 5 may be prefabricated, in which the hollow body 10 is connected to the cavitator 6 by means of a threaded connection.
- Drill for drilling works as follows.
- the stabilizer 11 provides alignment of the field of flow rates of the washing liquid at the inlet to the cylindrical section 8 of the cavitator 6.
- This mode of flow of the washing fluid flow is characterized in that in the cylindrical section 8 of the cavitator 6 periodically cavitation cavities 14 are formed and grow in length.
- the direction of growth of cavitation cavities 14 corresponds to the direction of flow of the washing fluid.
- the diffuser part 15 is torn off from it.
- the breakaway diffuser part 15 of the cavity 14 moves upstream and collapses (closes) in the high pressure zone, causing a pressure pulse in the volume of the flushing liquid in the hollow body 10 of the hydraulic vibrator 5 between the cavitator 6 and the rock cutting tool 3.
- the pressure value in the pulse significantly exceeds the value of the supply pressure.
- the frequency of this process depends on the geometric parameters of the cavitator 6, and for certain geometric parameters of this device on the pressure supply, as well as from the ratio of the pressure at the bottom to the supply pressure of the flushing fluid.
- the frequency of the pressure pulses increases, and the range of the oscillating pressure value has a maximum at a certain value of the ratio of the bottomhole pressure to the supply pressure of the washing liquid, which depends on the opening angle of the diffuser 9 cavitator 6.
- the inventive drill for drilling allows you to convert a stationary flow of flushing fluid into a high-frequency pulsating flow, which provides not only a pulsed effect of the flushing fluid, but also an additional mechanical pulsed effect of the rock cutting tool on the rock.
- the proposed drill for drilling wells has a simple, compact and efficient design, can be manufactured on standard equipment from well-known materials using modern technology at any mining engineering enterprise, and when used, it can reduce energy consumption and increase productivity of the drilling process, especially when drilling deep wells in hard and super hard rocks and can be widely used in mining.
- Si is the area of the through holes of the rock cutting tool
- S is the cross-sectional area of the cylindrical section of the flow channel a is the opening angle of the diffuser of the flow channel
- d is the inner diameter of the stabilizer
- Ri is the input radius of the rounding of the input edge
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)
- Earth Drilling (AREA)
Abstract
L'invention concerne l'industrie minière et notamment des dispositifs destinés au forage de puits dans des formations dures et extrêmement dures. L'engin de forage pour forer des puits comprend une colonne de tiges de forage dotée d'un outil de fracturation de roche, qui est muni d'orifices de circulation pour la sortie du liquide de rinçage, ainsi qu'un vibreur hydraulique doté d'un appareil de cavitation interne se présentant comme une buse dont le canal de circulation comprend une zone cylindrique présentant un diamètre critique ϋ(cr) et une zone évasée, ou diffuseur, ainsi qu'un corps creux disposé en aval de l'appareil de cavitation à l'intérieur du canal de circulation, la longueur L de la zone cylindrique correspondant à L = 0,5-2,0 du diamètre critique ϋ(cr), la surface globale S\ des orifices de circulation de l'outil de fracturation de roche étant 7-10 fois plus grande que la surface S de coupe de la zone cylindrique du canal de circulation de l'appareil de cavitation, et l'angle d'ouverture du diffuseur du canal de circulation étant а = 10 - 180°. A l'extrémité supérieure de l'appareil de cavitation on a monté un stabilisateur du flux de liquide de rinçage se présentant comme un tube dont le diamètre intérieur d équivaut à 2-3 diamètres critiques ϋ(cr) de la zone cylindrique de l'appareil de cavitation, et la longueur L\ correspond à 10 - 15 diamètres intérieurs d, le diamètre D2 du corps creux du vibreur hydraulique est égal au diamètre Ό\ de la section transversale du diffuseur de l'appareil de cavitation, et la longueur L2 du corps creux du vibreur hydraulique correspond à au moins 90-1 10 diamètres critiques ϋ(cr) de la zone cylindrique de l'appareil de cavitation. Le résultat technique est le suivant : baisse de la consommation d'énergie et hausse de la productivité.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| UA2012005342 | 2012-04-28 | ||
| UAA201205342 | 2012-04-28 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| WO2013162488A2 true WO2013162488A2 (fr) | 2013-10-31 |
| WO2013162488A3 WO2013162488A3 (fr) | 2014-01-09 |
Family
ID=47427511
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/UA2013/000044 WO2013162488A2 (fr) | 2012-04-28 | 2013-04-26 | Engin de forage pour forer des puits |
Country Status (2)
| Country | Link |
|---|---|
| EA (1) | EA017845B1 (fr) |
| WO (1) | WO2013162488A2 (fr) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU1617241A1 (ru) * | 1988-11-01 | 1990-12-30 | Казахское Научно-Производственное Объединение "Казрудгеология" | Снар д дл ударно-вращательного бурени |
| SU1496351A1 (ru) * | 1987-03-04 | 1991-01-07 | Специальное Конструкторско-Технологическое Бюро Института Технической Механики Ан Усср | Способ бурени скважин и устройство дл его осуществлени |
| RU2211320C2 (ru) * | 2000-08-28 | 2003-08-27 | Меламед Юрий Александрович | Способ импульсной обработки продуктивных пластов и фильтров скважин и устройство для его осуществления |
| US7392857B1 (en) * | 2007-01-03 | 2008-07-01 | Hall David R | Apparatus and method for vibrating a drill bit |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU49886U1 (ru) * | 2005-09-19 | 2005-12-10 | Лось Виталий Михайлович | Вибратор гидродинамический |
-
2012
- 2012-06-27 EA EA201200819A patent/EA017845B1/ru not_active IP Right Cessation
-
2013
- 2013-04-26 WO PCT/UA2013/000044 patent/WO2013162488A2/fr active Application Filing
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU1496351A1 (ru) * | 1987-03-04 | 1991-01-07 | Специальное Конструкторско-Технологическое Бюро Института Технической Механики Ан Усср | Способ бурени скважин и устройство дл его осуществлени |
| SU1617241A1 (ru) * | 1988-11-01 | 1990-12-30 | Казахское Научно-Производственное Объединение "Казрудгеология" | Снар д дл ударно-вращательного бурени |
| RU2211320C2 (ru) * | 2000-08-28 | 2003-08-27 | Меламед Юрий Александрович | Способ импульсной обработки продуктивных пластов и фильтров скважин и устройство для его осуществления |
| US7392857B1 (en) * | 2007-01-03 | 2008-07-01 | Hall David R | Apparatus and method for vibrating a drill bit |
Also Published As
| Publication number | Publication date |
|---|---|
| EA017845B1 (ru) | 2013-03-29 |
| EA201200819A1 (ru) | 2012-12-28 |
| WO2013162488A3 (fr) | 2014-01-09 |
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