Source: http://www.google.com/patents/US20040104050?dq=inassignee:doubleclick
Timestamp: 2017-03-28 09:00:45
Document Index: 665513315

Matched Legal Cases: ['art 2', 'art 2', 'art 2', 'art 2', 'art 4', 'art 4', 'art 4', 'art 2', 'art 4', 'art 5', 'arts 4', 'art 4', 'art 2', 'art 4', 'art 4', 'art 2', 'art 4', 'art 4', 'art 2', 'art 2', 'art 2', 'art 2', 'art 4', 'art 4', 'art 4', 'art 4', 'art 2', 'art 4', 'art 2', 'art 4', 'art 4']

Patent US20040104050 - Method for drilling and drilling apparatus - Google PatentsSearch Images Maps Play YouTube News Gmail Drive More »Sign inPatentsThe invention relates to a method for drilling, being carried out by a drilling apparatus, having a drilling device (1) unit (3), in the drilling head (I) of which there hole and second drilling means (5) for reaming of the center hole for the casing part (2) as well as flushing flow arrangement (6)...http://www.google.com/patents/US20040104050?utm_source=gb-gplus-sharePatent US20040104050 - Method for drilling and drilling apparatusAdvanced Patent SearchTry the new Google Patents, with machine-classified Google Scholar results, and Japanese and South Korean patents.Publication numberUS20040104050 A1Publication typeApplicationApplication numberUS 10/471,145PCT numberPCT/FI2002/000130Publication dateJun 3, 2004Filing dateFeb 18, 2002Priority dateApr 4, 2001Also published asCN1258633C, CN1500175A, DE60207059D1, DE60207059T2, EP1373675A1, EP1373675B1, US7143846, WO2002081856A1Publication number10471145, 471145, PCT/2002/130, PCT/FI/2/000130, PCT/FI/2/00130, PCT/FI/2002/000130, PCT/FI/2002/00130, PCT/FI2/000130, PCT/FI2/00130, PCT/FI2000130, PCT/FI200130, PCT/FI2002/000130, PCT/FI2002/00130, PCT/FI2002000130, PCT/FI200200130, US 2004/0104050 A1, US 2004/104050 A1, US 20040104050 A1, US 20040104050A1, US 2004104050 A1, US 2004104050A1, US-A1-20040104050, US-A1-2004104050, US2004/0104050A1, US2004/104050A1, US20040104050 A1, US20040104050A1, US2004104050 A1, US2004104050A1InventorsJorma Järvelä, Vesa JärveläOriginal AssigneeJaervelae Jorma, Jaervelae VesaExport CitationBiBTeX, EndNote, RefManPatent Citations (3), Referenced by (44), Classifications (12), Legal Events (5) External Links: USPTO, USPTO Assignment, EspacenetMethod for drilling and drilling apparatus
US 20040104050 A1Abstract
The invention relates to a method for drilling, being carried out by a drilling apparatus, having a drilling device (1) unit (3), in the drilling head (I) of which there hole and second drilling means (5) for reaming of the center hole for the casing part (2) as well as flushing flow arrangement (6) for flushing of waste, being generated. At least during the drilling situation, the first drilling means (4) are coupled by a power transmitting and, in order to enable removal of the same from the hole, removable arrangement, such as a bayonet coupling or like, with the second drilling means (5). A feed flow (6 a) of flushing medium, being carried out centrally is being transferred by internal drillings (X1) inside a first frame part (4 a), belonging to the first drilling means (4), to its outer periphery and a return flow (6 b) of flushing medium, in order to accomplish a so called reverse circulation of flushing medium, from the drilling surface (pp2) of the first frame part (4 a) through internal drillings (X2) therein into a space (z) between the first frame part (4 a) and the casing part (2). The invention relates also to a drilling apparatus for exploitation of the method described above. Images(4) Claims(6)
[0013] In the following description the invention is being described in detail with reference to the enclosed drawings, in which [0014] in FIG. 1 is shown a drilling apparatus according to prior art as a longitudinal sectional view, [0015] in FIG. 2 is shown a longitudinal sectional view of a drilling apparatus according to prior art, which has been carried out on reverse circulation-principle, [0016] in FIG. 3 is shown an advantageous drilling apparatus exploiting the method according to the invention as a longitudinal sectional view.
[0017] The invention relates to a method for drilling, being carried out by a drilling apparatus, which has, with reference to the advantageous embodiment shown particularly in FIG. 3, a drilling device. 1 that comprises a casing part 2, essentially inside of which there is at least during a drilling situation a drilling unit 3, in the drilling head I of which there are at least first drilling means 4 for drilling a center hole and second drilling means 5 for reaming of the center hole for the casing part 2 as well as flushing flow arrangement 6 for flushing of the waste, being generated, such as for feeding of flushing medium for the drilling and for removal of drilling waste, being generated, essentially inside the casing part 2. At least during the drilling situation, the first drilling means 4 are coupled by a power transmitting and, in order to enable removal of the same from the hole, removable arrangement, such as a bayonet coupling or like, with the second drilling means 5. Furthermore the casing part 2 is arranged to be drawn into the hole to be drilled through the first and/or the second drilling means. A feed flow 6 a of flushing medium, being carried out centrally, is being transferred by internal drillings X1 inside a first frame part 4 a, belonging to the first drilling means 4, to its outer periphery, and a return flow 6 b of flushing medium, in order to accomplish a so called reverse circulation of flushing medium, from the drilling surface pp2 of the first frame part 4 a through internal drillings X2 therein into a space z between the first frame part 4 a and the casing part 2. [0018] As an advantageous embodiment, the method is being applied e.g. in connection with a drilling apparatus belonging to the prior art as shown e.g. in FIG. 1, in which the drilling head I of the drilling unit 3 of the drilling device 1 is formed of at least a first frame part 4 a′ and a second frame part 5 a, in the drilling surfaces of which there has been arranged drilling organs 10 a, 10 b, such as a uniform cutting part, separate drill bits or parts or like, of the first and the second drilling means 4, 5. Flushing medium is being led in connection with the drilling device 1 at least through the drilling surfaces formed at least of the first and/or the second drilling means, such as inbetween the said frame parts 4 a′, 5 a, in order to remove flushing medium and drilling waste back to the driving end all the way from the space between the frame part 4 a′ and casing part 2. Instead in the RC-drill shown in FIG. 2, the return flow 6 b takes place disadvantageously, particularly from the point of view of space usage, through a return pipe, being placed at the center of the frame part 4 a″, in which case the intermediate space, being exploited in the present invention, is left unused. From the point of view of practice, the “double pipe structure” in question is disproportionately difficult also in other respect e.g. from the point of view of the hammering device and the coupling arrangements and structures between the drill pipes. [0019] Furthermore as an advantageous embodiment, the feed flow 6 a of flushing medium, being brought centrally, is being led on the principle shown in FIG. 3 by a passing flow duct 6 b′ to the space z between the first frame part 4 a and the casing part 2 particularly in order to adjust the return flow 6 b, such as sampling flow, that takes place from the drilling surface pp2. As a further advantageous embodiment, the flow occurring in the passing flow duct 6 b′ is being adjusted by exploiting throttle control or in a corresponding manner. [0020] The above depicted method enables use of the same drilling apparatus e.g. as shown in FIG. 1 both in traditional drilling and in drilling carried out on RC-principle e.g. as shown in FIG. 2, only by replacing the ordinary first frame part 4 a′ of the drilling device with a first frame part 4 a, being carried out according to the invention, which has an internal guiding assembly for the flow of flushing medium, being carried out according to the invention. [0021] The invention relates also to a drilling apparatus having a drilling device 1 that comprises, as shown in FIG. 3, a casing part 2, essentially inside of which there is at least during a drilling situation a drilling unit 3, in the drilling head I of which there are at least first drilling means 4 for drilling a center hole and second drilling means 5 for reaming of the center hole for the casing part 2 as well as flushing flow arrangement 6 for flushing of waste, being generated, such as for feeding of flushing medium for the drilling and for removal of drilling waste, being generated, essentially inside the casing part 2. At least during the drilling situation, the first drilling means 4 are coupled by a power transmitting and, in order to enable removal of the same from the hole, removable arrangement, such as a bayonet coupling or like, with the second drilling means 5. Furthermore the casing part 2 is arranged to be drawn into the hole to be drilled by means of the first and/or of the second drilling means. Inside a first frame part 4 a, belonging to the first drilling means 4, is arranged a first transferring arrangement X1 in order to transfer a feed flow 6 a of flushing medium, being carried out centrally, through internal drillings to the outer periphery of the first frame part 4 a, and a second transferring arrangement X2, in order to accomplish a so called reverse circulation of the flushing medium, by leading a return flow 6 b through internal drillings from the drilling surface pp2 of the first frame part 4 a into a space z between the first frame part 4 a and the casing part 2. [0022] As an advantageous embodiment the feed flow 6 a of flushing medium, being brought centrally, is led by a passing flow duct 6 b, to the space z between the first frame part 4 a and the casing part 2 particularly in order to adjust the return flow 6 b, such as sampling flow, that takes place from the drilling surface pp2. [0023] The flow occurring in the passing flow duct 6 b′ is adjusted by exploiting throttle control or in a corresponding manner (which has not been shown in greater detail in the drawing in question). [0024] The drilling apparatus, being described above, may thus be used both in an ordinary manner and in drilling based on reverse circulation principle, only by replacing the traditional first frame part 4 a′ of the drilling apparatus with the frame part 4 a, being brought about according to the invention, which has an internal guiding assembly for the flow of flushing medium. [0025] It is obvious that the invention is not limited to those embodiments, being presented or described above, but it can be modified within the basic idea according to the need present at each time. Thus it is possible e.g. to apply in the drilling head of the drilling unit a greater number of frame parts, than presented above, whereby e.g. the drilling bits may be connected to the head of the first frame part with an integrated cutting block. Naturally it is not necessary to use a casing shoe existing in the embodiment shown particularly in the enclosed drawings, but the same kind assemblies may be constructed by solid assemblies that are placed in the inside and/or outside surfaces of the head of the casing part. Correspondingly the casing shoe in question may be constructed in a way allowing its twisting movement with respect to the second frame part and at least partially limiting the mutual longitudinal movement of the same in such a way that the casing shoe rests on a guiding surface of the second frame part that reaches inside the casing part, whereby the second frame part further rests indirectly on a guiding projection of the first frame part. [0026] Naturally the mutual counterpart assemblies between the drilling means may be constructed in most differing ways. Thus the first frame part and the second frame part may be connected to each other by e.g. a thread joint, wherein the locking between the same is achieved by mechanical, pressurized fluid and/or electrical assemblies. Naturally the parts may be connected to each other only by a thread joint, which solution, however, may cause problems in separating the parts from each other, because the parts will probably jam against each other too tightly during drilling. The frame parts may be connected by the quick coupling principle also in a way that there are teeth in both parts which fit to each other in the longitudinal direction. In such a case it is, however, not possible with simple arrangements to achieve the actual longitudinal locking between the frame parts. Then there is e.g. the risk that in certain operational situations the frame part separates unintentionally, whereby additional installation stages are needed to couple them again. With the solution in question, there is not a full certainty in every operational situation about the frame parts being tightened to each other long enough, in which case on the other hand the drilling result suffers because the center drill does not reach far enough to drill, and on the other hand the toothing between the frame parts may get out of order by breakage. [0027] Naturally the second drilling means may be connected only to the first drilling means, in which case there is a risk that the second drilling means turns into an unsuitable position at the bottom of the hole, when the first drilling means is removed from the hole, and thus possibly even prevent exploitation of the hole being drilled. In the drilling apparatus according to the invention, parts made or customary materials may be used that are produced applying most differing manufacturing methods. In addition e.g. an oscillating movement may be applied as the drilling movement of the drilling apparatus. 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ClassificationE21B7/20, E21B10/64, E21B21/12, E21B10/38Cooperative ClassificationE21B7/20, E21B10/64, E21B21/12European ClassificationE21B7/20, E21B21/12, E21B10/64Legal EventsDateCodeEventDescriptionDec 9, 2004ASAssignmentOwner name: OY ATLAS COPCO ROTEX AB, FINLANDFree format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:JARVELA, JORMA;JARVELA, VESA;REEL/FRAME:016058/0867Effective date: 20041102Jan 4, 2010FPAYFee paymentYear of fee payment: 4Jul 18, 2014REMIMaintenance fee reminder mailedDec 5, 2014LAPSLapse for failure to pay maintenance feesJan 27, 2015FPExpired due to failure to pay maintenance feeEffective date: 20141205RotateOriginal ImageGoogle Home - Sitemap - USPTO Bulk Downloads - Privacy Policy - Terms of Service - About Google Patents - Send FeedbackData provided by IFI CLAIMS Patent Services