GB1258890A - - Google Patents

Info

Publication number
GB1258890A
GB1258890A GB1258890DA GB1258890A GB 1258890 A GB1258890 A GB 1258890A GB 1258890D A GB1258890D A GB 1258890DA GB 1258890 A GB1258890 A GB 1258890A
Authority
GB
United Kingdom
Prior art keywords
velocity
string
nozzles
mud
drilling
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
Application number
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
Application filed filed Critical
Publication of GB1258890A publication Critical patent/GB1258890A/en
Expired legal-status Critical Current

Links

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
    • E21B7/18—Drilling by liquid or gas jets, with or without entrained pellets
    • 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
    • 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
    • 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
    • E21B7/04—Directional drilling
    • E21B7/06—Deflecting the direction of boreholes
    • E21B7/065—Deflecting the direction of boreholes using oriented fluid jets

Landscapes

  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (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)
  • Mechanical Engineering (AREA)
  • Earth Drilling (AREA)

Abstract

1,258,890. Boring earth &c. R. F. VARLEY CO. Inc. 14 Dec., 1970 [15 Dec., 1969], No. 59348/70. Heading E1F. In a method of deflecting a borehole by a jet or jets of drilling fluid, the velocity of the fluid used for jetting is greater than the velocity used for drilling. A slip joint 26 is mounted in the drill string 22 above drill collars 27 carrying a deflection bit 30 having at least one deflection nozzle 32 of greater diameter than other nozzles 33. The nozzle or nozzles 32 is or are directed in the direction it is desired that the hole will take and drilling mud is pumped by a pump 46 to the string whilst its upper part is raised so that the joint is fully extended. Rapid lowering of the upper part causes a valve 28 to close so that mud in the string below the valve is subjected to the weight of the upper part and mud issues through the nozzles 32 at increased velocity. The raising and lowering of the upper part of the string is repeated, the increased jetting velocity eroding the earth and the bit cutting the hole. (For Figures see next page)
GB1258890D 1969-12-15 1970-12-14 Expired GB1258890A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US88480469A 1969-12-15 1969-12-15

Publications (1)

Publication Number Publication Date
GB1258890A true GB1258890A (en) 1971-12-30

Family

ID=25385432

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1258890D Expired GB1258890A (en) 1969-12-15 1970-12-14

Country Status (6)

Country Link
US (1) US3599733A (en)
JP (1) JPS5021121B1 (en)
CA (1) CA924705A (en)
FR (1) FR2073469B1 (en)
GB (1) GB1258890A (en)
NL (1) NL158579B (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2126267A (en) * 1982-09-07 1984-03-21 Coal Ind Drilling methods and equipment

Families Citing this family (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3993146A (en) * 1973-08-29 1976-11-23 Continental Oil Company Apparatus for mining coal using vertical bore hole and fluid
US4027407A (en) * 1975-11-24 1977-06-07 Kiss Sandor G Jet flow alternator
US4518048A (en) * 1983-04-18 1985-05-21 Robert F. Varley Co., Inc. Method for improved hydraulic jetting of drill bore holes using high pressure pulses of fluid
US4787463A (en) * 1985-03-07 1988-11-29 Flowmole Corporation Method and apparatus for installment of underground utilities
US4637479A (en) * 1985-05-31 1987-01-20 Schlumberger Technology Corporation Methods and apparatus for controlled directional drilling of boreholes
FR2702515A1 (en) * 1993-03-11 1994-09-16 Simon Henri Method and installation for carrying out earthworks, especially excavation, in a sensitive encumbered environment
US5660241A (en) * 1995-12-20 1997-08-26 Dowell, A Division Of Schlumberger Technology Corporation Pressure compensated weight on bit shock sub for a wellbore drilling tool
US5879057A (en) * 1996-11-12 1999-03-09 Amvest Corporation Horizontal remote mining system, and method
US7311148B2 (en) 1999-02-25 2007-12-25 Weatherford/Lamb, Inc. Methods and apparatus for wellbore construction and completion
US7334650B2 (en) * 2000-04-13 2008-02-26 Weatherford/Lamb, Inc. Apparatus and methods for drilling a wellbore using casing
FR2819850B1 (en) * 2001-01-22 2003-12-19 Cie Du Sol PRESSURE LIQUID JET DRILLING TOOL
US8925651B2 (en) * 2008-05-13 2015-01-06 Petrojet Canada, Inc. Hydraulic drilling method with penetration control
CN103599612A (en) * 2013-10-17 2014-02-26 江苏振翔车辆装备股份有限公司 Elevating platform fire truck
US9702200B2 (en) * 2014-05-21 2017-07-11 Tesco Corporation System and method for controlled slip connection
CA2958718C (en) 2014-06-17 2022-06-14 Daniel Robert MCCORMACK Hydraulic drilling systems and methods

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1388496A (en) * 1921-08-23 wadsworth
GB191322522A (en) * 1912-11-30 1915-06-17 Victor Petit Improvements in or relating to Boring and Drilling Apparatus.
US1669130A (en) * 1924-11-06 1928-05-08 Bertel M Jensen Pump
US3112800A (en) * 1959-08-28 1963-12-03 Phillips Petroleum Co Method of drilling with high velocity jet cutter rock bit
US3207241A (en) * 1963-04-08 1965-09-21 Smith Tool Co Jet bits
US3488765A (en) * 1967-12-21 1970-01-06 Edwin A Anderson Method and arrangement for selectively controlling fluid discharge from a drill bit on the lower end of a drill string

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2126267A (en) * 1982-09-07 1984-03-21 Coal Ind Drilling methods and equipment

Also Published As

Publication number Publication date
JPS5021121B1 (en) 1975-07-21
FR2073469B1 (en) 1973-12-07
NL158579B (en) 1978-11-15
NL7018212A (en) 1971-06-17
CA924705A (en) 1973-04-17
US3599733A (en) 1971-08-17
FR2073469A1 (en) 1971-10-01

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PCNP Patent ceased through non-payment of renewal fee