GB2405891B - Choke for controlling the flow of drilling mud - Google Patents

Choke for controlling the flow of drilling mud

Info

Publication number
GB2405891B
GB2405891B GB0428285A GB0428285A GB2405891B GB 2405891 B GB2405891 B GB 2405891B GB 0428285 A GB0428285 A GB 0428285A GB 0428285 A GB0428285 A GB 0428285A GB 2405891 B GB2405891 B GB 2405891B
Authority
GB
United Kingdom
Prior art keywords
choke
controlling
flow
drilling mud
mud
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 - Fee Related
Application number
GB0428285A
Other versions
GB2405891A (en
GB0428285D0 (en
Inventor
Riet Egbert Jan Van
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.)
Shell Internationale Research Maatschappij BV
Original Assignee
Shell Internationale Research Maatschappij BV
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 by Shell Internationale Research Maatschappij BV filed Critical Shell Internationale Research Maatschappij BV
Publication of GB0428285D0 publication Critical patent/GB0428285D0/en
Publication of GB2405891A publication Critical patent/GB2405891A/en
Application granted granted Critical
Publication of GB2405891B publication Critical patent/GB2405891B/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

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
    • E21B21/10—Valve arrangements in drilling-fluid circulation systems
    • E21B21/106—Valve arrangements outside the borehole, e.g. kelly valves

Landscapes

  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Geology (AREA)
  • Mining & Mineral Resources (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Environmental & Geological Engineering (AREA)
  • Fluid Mechanics (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Earth Drilling (AREA)
GB0428285A 2002-07-08 2003-06-24 Choke for controlling the flow of drilling mud Expired - Fee Related GB2405891B (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP02254746 2002-07-08
PCT/EP2003/006750 WO2004005667A1 (en) 2002-07-08 2003-06-24 Choke for controlling the flow of drilling mud

Publications (3)

Publication Number Publication Date
GB0428285D0 GB0428285D0 (en) 2005-01-26
GB2405891A GB2405891A (en) 2005-03-16
GB2405891B true GB2405891B (en) 2005-11-16

Family

ID=30011236

Family Applications (1)

Application Number Title Priority Date Filing Date
GB0428285A Expired - Fee Related GB2405891B (en) 2002-07-08 2003-06-24 Choke for controlling the flow of drilling mud

Country Status (5)

Country Link
US (2) US20060086538A1 (en)
AU (1) AU2003242762A1 (en)
CA (1) CA2491925A1 (en)
GB (1) GB2405891B (en)
WO (1) WO2004005667A1 (en)

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CN113302289A (en) 2018-11-14 2021-08-24 Dna斯克瑞普特公司 Terminal deoxynucleotidyl transferase variants and uses thereof
US11268091B2 (en) 2018-12-13 2022-03-08 Dna Script Sas Direct oligonucleotide synthesis on cells and biomolecules
JP2022515912A (en) 2019-01-03 2022-02-22 ディーエヌエー スクリプト One-pot synthesis of oligonucleotide sets
SG11202107921SA (en) 2019-02-12 2021-08-30 Dna Script Efficient product cleavage in template-free enzymatic synthesis of polynucleotides.
WO2021018919A1 (en) 2019-07-30 2021-02-04 Dna Script Template-free enzymatic synthesis of polynucleotides using poly(a) and poly(u) polymerases
KR20220052938A (en) 2019-08-01 2022-04-28 디엔에이 스크립트 Increased Long Sequence Yield in Template-Free Enzymatic Synthesis of Polynucleotides
EP4028537A1 (en) 2019-09-09 2022-07-20 DNA Script Template-free enzymatic polynucleotide synthesis using photocleavable linkages
CN114729389B (en) 2019-09-23 2024-03-08 Dna斯克瑞普特公司 Increasing long sequence yield in template-free enzymatic synthesis of polynucleotides
JP2023501651A (en) 2019-11-13 2023-01-18 ディーエヌエー スクリプト Highly efficient template-free enzymatic synthesis of polynucleotides
JP2023506760A (en) 2019-12-12 2023-02-20 ディーエヌエー スクリプト Chimeric Terminal Deoxynucleotide Transferases for Template-Free Enzymatic Synthesis of Polynucleotides
US20230203553A1 (en) 2019-12-16 2023-06-29 Dna Script Template-Free Enzymatic Polynucleotide Synthesis Using Dismutationless Terminal Deoxynucleotidyl Transferase Variants
EP4110940B1 (en) 2020-02-25 2024-03-27 DNA Script Method and apparatus for enzymatic synthesis of polynucleotides
EP4139446A1 (en) 2020-04-20 2023-03-01 DNA Script Terminal deoxynucleotidyl transferase variants and uses thereof
EP4164784A1 (en) 2020-06-16 2023-04-19 DNA Script Systems, apparatus and kits for enzymatic polynucleotide synthesis
US20230313255A1 (en) 2020-07-15 2023-10-05 Dna Script Massively Parallel Enzymatic Synthesis of Polynucleotides
EP4217476A1 (en) 2020-09-22 2023-08-02 DNA Script Stabilized n-terminally truncated terminal deoxynucleotidyl transferase variants and uses thereof
US20240052391A1 (en) 2020-10-29 2024-02-15 Dna Script Enzymatic Synthesis of Polynucleotide Probes
JP2024511874A (en) 2021-04-02 2024-03-15 ディーエヌエー スクリプト Method and kit for enzymatic synthesis of polynucleotides susceptible to G4 formation
WO2023083999A2 (en) 2021-11-10 2023-05-19 Dna Script Novel terminal deoxynucleotidyl transferase (tdt) variants
WO2023083997A2 (en) 2021-11-10 2023-05-19 Dna Script Novel terminal deoxynucleotidyl

Citations (5)

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Publication number Priority date Publication date Assignee Title
US3354970A (en) * 1965-02-08 1967-11-28 Pan American Petroleum Corp Controlling high-pressure wells while drilling
US3365009A (en) * 1966-07-12 1968-01-23 Gerald E. Burnham Drilling fluid circulation system having flow parameter regulating means
US3508577A (en) * 1967-04-05 1970-04-28 Pan American Petroleum Corp Blowout control valve for drilling well
US4630675A (en) * 1985-05-28 1986-12-23 Smith International Inc. Drilling choke pressure limiting control system
EP0947750A2 (en) * 1998-04-03 1999-10-06 Cemi Piscine Service S.r.l. Five-way butterfly valve

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3354970A (en) * 1965-02-08 1967-11-28 Pan American Petroleum Corp Controlling high-pressure wells while drilling
US3365009A (en) * 1966-07-12 1968-01-23 Gerald E. Burnham Drilling fluid circulation system having flow parameter regulating means
US3508577A (en) * 1967-04-05 1970-04-28 Pan American Petroleum Corp Blowout control valve for drilling well
US4630675A (en) * 1985-05-28 1986-12-23 Smith International Inc. Drilling choke pressure limiting control system
EP0947750A2 (en) * 1998-04-03 1999-10-06 Cemi Piscine Service S.r.l. Five-way butterfly valve

Also Published As

Publication number Publication date
US20060086538A1 (en) 2006-04-27
CA2491925A1 (en) 2004-01-15
US20070240875A1 (en) 2007-10-18
AU2003242762A1 (en) 2004-01-23
GB2405891A (en) 2005-03-16
WO2004005667A1 (en) 2004-01-15
GB0428285D0 (en) 2005-01-26

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Legal Events

Date Code Title Description
732E Amendments to the register in respect of changes of name or changes affecting rights (sect. 32/1977)
PCNP Patent ceased through non-payment of renewal fee

Effective date: 20100624