EP0605562B1 - Apparatus and method for removing drillhole debris - Google Patents

Apparatus and method for removing drillhole debris Download PDF

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Publication number
EP0605562B1
EP0605562B1 EP92920320A EP92920320A EP0605562B1 EP 0605562 B1 EP0605562 B1 EP 0605562B1 EP 92920320 A EP92920320 A EP 92920320A EP 92920320 A EP92920320 A EP 92920320A EP 0605562 B1 EP0605562 B1 EP 0605562B1
Authority
EP
European Patent Office
Prior art keywords
percussive fluid
matter
drill
percussive
mixture
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.)
Expired - Lifetime
Application number
EP92920320A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0605562A1 (en
Inventor
Leland H. Lyon
Ernest C. Hinck
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Ingersoll Rand Co
Original Assignee
Ingersoll Rand Co
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Priority claimed from US07/766,866 external-priority patent/US5143162A/en
Priority claimed from US07/766,867 external-priority patent/US5139095A/en
Application filed by Ingersoll Rand Co filed Critical Ingersoll Rand Co
Publication of EP0605562A1 publication Critical patent/EP0605562A1/en
Application granted granted Critical
Publication of EP0605562B1 publication Critical patent/EP0605562B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • E21B21/00—Methods or apparatus for flushing boreholes, e.g. by use of exhaust air from motor
    • 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
    • E21B4/00—Drives for drilling, used in the borehole
    • E21B4/06—Down-hole impacting means, e.g. hammers
    • E21B4/14—Fluid operated hammers
    • 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
    • E21B21/00—Methods or apparatus for flushing boreholes, e.g. by use of exhaust air from motor
    • E21B21/002—Down-hole drilling fluid separation systems
    • 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
    • E21B21/00—Methods or apparatus for flushing boreholes, e.g. by use of exhaust air from motor
    • E21B21/10—Valve arrangements in drilling-fluid circulation systems
    • E21B21/103—Down-hole by-pass valve arrangements, i.e. between the inside of the drill string and the annulus
    • 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
    • E21B21/00—Methods or apparatus for flushing boreholes, e.g. by use of exhaust air from motor
    • E21B21/14—Methods or apparatus for flushing boreholes, e.g. by use of exhaust air from motor using liquids and gases, e.g. foams

Definitions

  • This invention relates generally to rock drills and more particularly to pneumatically operated percussive drills of the type adapted to be inserted into a drill hole being drilled thereby and commonly known as "down-the-hole” drills or (DHD).
  • DHD down-the-hole drills
  • the volume of liquids injected can range from about 2.0 gallons (7.57 l) per minute to about 15.0 gallons (56.78 l) per minute.
  • an appreciable loss in penetration rate results for a given pressure.
  • the decrease in penetration rate can range from 30% to 60%, depending upon the fluid injection rate and pressure. The loss in hammer performance associated with fluid injection adversely affects DHD production and in many cases causes the use of DHD to be unsuitable.
  • a down-the-hole separator to separate drilling mud into portions of different densities is known from US-A-4 688 650.
  • a device for removing debris from a drill hole made by a fluid-activated, percussion, down-the-hole drill tool adapted to be suspended at its top end from a drill string having an axial bore the device including an inlet for fluidly communicating with said drill string axial bore and for receiving a flow of a mixture of gaseous percussive fluid and other matter from said drill string axial bore;characterised by separator means positioned adjacent said top end of said tool for receiving a flow of a mixture of gaseous percussive fluid and other matter from said drill string axial bore, for separating and collecting in a bottom end of said separator means substantially all of said other matter from said gaseous percussive fluid and for thereafter transmitting said percussive fluid through said device to said tool, while simultaneously transmitting said collected other matter and at least some of said percussive fluid out of said separator means into the drill hole annulus, for removing said debris, and deflector means to de
  • a method for removing debris from a drill hole said drill hole being made by a fluid-activated, percussion down-the-hole drill tool adapted to be suspended at its top end from a drill string having an axial bore, the method being characterised by positioning a separator means between said top end of said drill tool and a bottom end of said drill string, injecting into said bore a flow of a mixture of a gaseous percussive fluid and other matter, transmitting said mixture down into said separator means in said drill hole, removing substantially all of said other matter from said mixture as a separate phase prior to said percussive fluid entering said drill tool, simultaneously ejecting said removed other matter from said separator means into said drill hole to remove said debris, and simultaneously preventing backflow of said debris from said drill hole into said separator when said flow of said mixture ceases, and simultaneously injecting into said drill tool at least some of said percussive fluid mixture prior to removal of said other matter to lubricate said drill
  • FIG. 1 there is shown a drill hole 1, having a drill hole cleaning device 3 positioned therein.
  • the cleaning device 3 has a top connector 5 connected by conventional means such as threads to the bottom end 7 of a drill string 9.
  • a bottom connector 11 connects the device 3 by conventional means such as threads to a back head of a down-the-hole drill 13. Equivalently, the bottom connector 11 could connect to another member in the drill string 9, rather than the drill 13, so long as the device 3 is within the drill hole 1 and adjacent to the drill 13.
  • a fluid is caused to flow through the drill string 9 to activate the drill 13.
  • the drill 13 is of the type known as a percussive down-the-hole drill activated by a pneumatic fluid such as air.
  • a pneumatic fluid such as air.
  • the fluid exits the drill head and moves up the drill hole to carry out debris from drilling. Debris from drilling can include particles of strata being drilled, water seeping into the drill hole, plus other matter introduced into the drill 13 via the drill string 9.
  • the percussive fluid may be a mixture of air, water, oil and other matter, including solid particles.
  • percussive refers to the type of drill that utilises a reciprocating piston to impart impact forces to a drill head to cause penetration of the strata, and does not refer to a rotary type drill that utilises a rotary grinding action to cause penetration.
  • a deflector means 25 is sealingly fastened in the first inlet 19. As shown in Figures 2 and 3 in horizontal cross-section the inlet 19 is circular in outline, as is the deflector means 25, although other shapes of outline could be used.
  • the deflector means 25 includes a deflector plate 27 extending across the first inlet 19 in a plane that is transverse to, and perpendicular to, the longitudinal axial direction of the vortex chamber 17 and bore 21. This plane of the deflector plate 27 is referred to herein as a "radial" plane or direction.
  • the deflector means 25 deflects flow of a mixture percussive fluid and other matter from a downward axial direction to a radial and tangential direction, as hereinafter described.
  • a baffle 45 is connected to the lower end 47 of the focus tube 29 and extends radially into the first percussive fluid passageway 37 and ends spaced from the inner surface 39, to cause reversal of flow of percussive fluid as described hereinafter.
  • a single aperture 61 extends axially downwardly through the plate 27 to form a passageway communicating between the first inlet 19 and focus tube inlet 35 to permit at least some of the percussive fluid mixture to by-pass the deflector means, so as to permit as small amount of percussive fluid mixture to flow directly to the drill tool head for a purpose such as lubrication. It would be equivalent to provide a plurality of apertures instead of the single aperture 61.
EP92920320A 1991-09-27 1992-09-16 Apparatus and method for removing drillhole debris Expired - Lifetime EP0605562B1 (en)

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
US07/766,866 US5143162A (en) 1991-09-27 1991-09-27 Device for removing debris from a drillhole
US766866 1991-09-27
US766867 1991-09-27
US07/766,867 US5139095A (en) 1991-09-27 1991-09-27 Method for removing debris from a drillhole
PCT/US1992/007821 WO1993006334A1 (en) 1991-09-27 1992-09-16 Apparatus and method for removing drillhole debris

Publications (2)

Publication Number Publication Date
EP0605562A1 EP0605562A1 (en) 1994-07-13
EP0605562B1 true EP0605562B1 (en) 1997-01-22

Family

ID=27117808

Family Applications (1)

Application Number Title Priority Date Filing Date
EP92920320A Expired - Lifetime EP0605562B1 (en) 1991-09-27 1992-09-16 Apparatus and method for removing drillhole debris

Country Status (8)

Country Link
EP (1) EP0605562B1 (zh)
JP (1) JPH07502086A (zh)
KR (1) KR940702580A (zh)
CN (1) CN1029700C (zh)
AU (1) AU666500B2 (zh)
CA (1) CA2119249A1 (zh)
DE (1) DE69217072T2 (zh)
WO (1) WO1993006334A1 (zh)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5682957A (en) * 1995-12-21 1997-11-04 Ingersoll-Rand Company Water separator for a down hole drill
US8353369B2 (en) * 2008-08-06 2013-01-15 Atlas Copco Secoroc, LLC Percussion assisted rotary earth bit and method of operating the same
US8011455B2 (en) * 2009-02-11 2011-09-06 Atlas Copco Secoroc Llc Down hole hammer having elevated exhaust
CN102049386B (zh) * 2009-11-04 2014-01-29 中粮集团有限公司 一种用于从物料中清除杂物的装置
CN112922531B (zh) * 2021-02-24 2022-06-24 中煤科工集团西安研究院有限公司 具有反向冲洗功能的防回流式定向钻头及其施工方法

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2293259A (en) * 1941-03-25 1942-08-18 Acme Fishing Tool Company Device for preventing clogging of drilling bits
US2609182A (en) * 1946-11-23 1952-09-02 Arutunoff Armais Apparatus for drilling deep wells
US4333537A (en) * 1978-11-24 1982-06-08 Harris Jesse W Impact drilling tool having improved valving
US4694911A (en) * 1984-07-13 1987-09-22 Kennedy James D Drilling assembly for percussion drilling of deep wells
US4688650A (en) * 1985-11-25 1987-08-25 Petroleum Instrumentation & Technological Services Static separator sub

Also Published As

Publication number Publication date
CN1072988A (zh) 1993-06-09
CA2119249A1 (en) 1993-04-01
DE69217072T2 (de) 1997-06-12
EP0605562A1 (en) 1994-07-13
WO1993006334A1 (en) 1993-04-01
DE69217072D1 (de) 1997-03-06
JPH07502086A (ja) 1995-03-02
KR940702580A (ko) 1994-08-20
AU2656492A (en) 1993-04-27
CN1029700C (zh) 1995-09-06
AU666500B2 (en) 1996-02-15

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