NO20072671L - Stromningsstyring ved bruk av en snirklet bane. - Google Patents

Stromningsstyring ved bruk av en snirklet bane.

Info

Publication number
NO20072671L
NO20072671L NO20072671A NO20072671A NO20072671L NO 20072671 L NO20072671 L NO 20072671L NO 20072671 A NO20072671 A NO 20072671A NO 20072671 A NO20072671 A NO 20072671A NO 20072671 L NO20072671 L NO 20072671L
Authority
NO
Norway
Prior art keywords
flow control
coiled
coiled path
flow
passage
Prior art date
Application number
NO20072671A
Other languages
English (en)
Inventor
Alexander F Zazovsky
Mark H Fraker
Qing Yao
Adinathan Venkitaraman
Original Assignee
Schlumberger Technology 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 Schlumberger Technology Bv filed Critical Schlumberger Technology Bv
Publication of NO20072671L publication Critical patent/NO20072671L/no

Links

Classifications

    • EFIXED CONSTRUCTIONS
    • E21EARTH DRILLING; MINING
    • E21BEARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B43/00Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
    • E21B43/32Preventing gas- or water-coning phenomena, i.e. the formation of a conical column of gas or water around wells
    • EFIXED CONSTRUCTIONS
    • E21EARTH DRILLING; MINING
    • E21BEARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B34/00Valve arrangements for boreholes or wells
    • E21B34/06Valve arrangements for boreholes or wells in wells
    • EFIXED CONSTRUCTIONS
    • E21EARTH DRILLING; MINING
    • E21BEARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B43/00Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
    • E21B43/12Methods or apparatus for controlling the flow of the obtained fluid to or in wells
    • EFIXED CONSTRUCTIONS
    • E21EARTH DRILLING; MINING
    • E21BEARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B43/00Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
    • E21B43/14Obtaining from a multiple-zone well

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)
  • Infusion, Injection, And Reservoir Apparatuses (AREA)
  • Flow Control (AREA)
  • Pipe Accessories (AREA)

Abstract

En anordning for bruk i en brønnboring inkluderer generelt en strømningsrørkanal og en struktur som avgrenser et snirklet fluidløp nær strømningsrør-kanalen, hvor det snirklete fluidløp mottar en strøm av fluid. Det snirklete fluidløp er avgrenset av i det minste første og andre organer av strukturen, og de første og andre organer er bevegelige i forhold til hverandre for å justere et tverrsnittsstrømningsareal av det snirklete fluidløp.
NO20072671A 2006-05-26 2007-05-25 Stromningsstyring ved bruk av en snirklet bane. NO20072671L (no)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US80325306P 2006-05-26 2006-05-26
US11/643,104 US7857050B2 (en) 2006-05-26 2006-12-21 Flow control using a tortuous path

Publications (1)

Publication Number Publication Date
NO20072671L true NO20072671L (no) 2007-11-27

Family

ID=38170692

Family Applications (1)

Application Number Title Priority Date Filing Date
NO20072671A NO20072671L (no) 2006-05-26 2007-05-25 Stromningsstyring ved bruk av en snirklet bane.

Country Status (3)

Country Link
US (2) US7857050B2 (no)
GB (1) GB2438482B (no)
NO (1) NO20072671L (no)

Families Citing this family (69)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7857050B2 (en) * 2006-05-26 2010-12-28 Schlumberger Technology Corporation Flow control using a tortuous path
US7543636B2 (en) * 2006-10-06 2009-06-09 Schlumberger Technology Corporation Diagnostic sleeve shifting tool
US7789145B2 (en) * 2007-06-20 2010-09-07 Schlumberger Technology Corporation Inflow control device
US8312931B2 (en) * 2007-10-12 2012-11-20 Baker Hughes Incorporated Flow restriction device
US7942206B2 (en) * 2007-10-12 2011-05-17 Baker Hughes Incorporated In-flow control device utilizing a water sensitive media
US8096351B2 (en) 2007-10-19 2012-01-17 Baker Hughes Incorporated Water sensing adaptable in-flow control device and method of use
US8544548B2 (en) * 2007-10-19 2013-10-01 Baker Hughes Incorporated Water dissolvable materials for activating inflow control devices that control flow of subsurface fluids
US7918272B2 (en) * 2007-10-19 2011-04-05 Baker Hughes Incorporated Permeable medium flow control devices for use in hydrocarbon production
US7913755B2 (en) 2007-10-19 2011-03-29 Baker Hughes Incorporated Device and system for well completion and control and method for completing and controlling a well
US8069921B2 (en) 2007-10-19 2011-12-06 Baker Hughes Incorporated Adjustable flow control devices for use in hydrocarbon production
US7913765B2 (en) * 2007-10-19 2011-03-29 Baker Hughes Incorporated Water absorbing or dissolving materials used as an in-flow control device and method of use
US7918275B2 (en) 2007-11-27 2011-04-05 Baker Hughes Incorporated Water sensitive adaptive inflow control using couette flow to actuate a valve
US8839849B2 (en) 2008-03-18 2014-09-23 Baker Hughes Incorporated Water sensitive variable counterweight device driven by osmosis
US7992637B2 (en) * 2008-04-02 2011-08-09 Baker Hughes Incorporated Reverse flow in-flow control device
US8931570B2 (en) * 2008-05-08 2015-01-13 Baker Hughes Incorporated Reactive in-flow control device for subterranean wellbores
US8171999B2 (en) 2008-05-13 2012-05-08 Baker Huges Incorporated Downhole flow control device and method
US8555958B2 (en) 2008-05-13 2013-10-15 Baker Hughes Incorporated Pipeless steam assisted gravity drainage system and method
US8113292B2 (en) 2008-05-13 2012-02-14 Baker Hughes Incorporated Strokable liner hanger and method
US8132624B2 (en) 2009-06-02 2012-03-13 Baker Hughes Incorporated Permeability flow balancing within integral screen joints and method
US8151881B2 (en) 2009-06-02 2012-04-10 Baker Hughes Incorporated Permeability flow balancing within integral screen joints
US8056627B2 (en) 2009-06-02 2011-11-15 Baker Hughes Incorporated Permeability flow balancing within integral screen joints and method
US8893809B2 (en) 2009-07-02 2014-11-25 Baker Hughes Incorporated Flow control device with one or more retrievable elements and related methods
US8550166B2 (en) 2009-07-21 2013-10-08 Baker Hughes Incorporated Self-adjusting in-flow control device
US8893804B2 (en) * 2009-08-18 2014-11-25 Halliburton Energy Services, Inc. Alternating flow resistance increases and decreases for propagating pressure pulses in a subterranean well
US8656867B2 (en) * 2009-08-18 2014-02-25 Intellihot Green Technologies, Inc. Coil tube heat exchanger for a tankless hot water system
US8276669B2 (en) 2010-06-02 2012-10-02 Halliburton Energy Services, Inc. Variable flow resistance system with circulation inducing structure therein to variably resist flow in a subterranean well
US9109423B2 (en) 2009-08-18 2015-08-18 Halliburton Energy Services, Inc. Apparatus for autonomous downhole fluid selection with pathway dependent resistance system
US8235128B2 (en) * 2009-08-18 2012-08-07 Halliburton Energy Services, Inc. Flow path control based on fluid characteristics to thereby variably resist flow in a subterranean well
US9016371B2 (en) 2009-09-04 2015-04-28 Baker Hughes Incorporated Flow rate dependent flow control device and methods for using same in a wellbore
US8403038B2 (en) * 2009-10-02 2013-03-26 Baker Hughes Incorporated Flow control device that substantially decreases flow of a fluid when a property of the fluid is in a selected range
US8469105B2 (en) * 2009-12-22 2013-06-25 Baker Hughes Incorporated Downhole-adjustable flow control device for controlling flow of a fluid into a wellbore
US8469107B2 (en) * 2009-12-22 2013-06-25 Baker Hughes Incorporated Downhole-adjustable flow control device for controlling flow of a fluid into a wellbore
US8210258B2 (en) * 2009-12-22 2012-07-03 Baker Hughes Incorporated Wireline-adjustable downhole flow control devices and methods for using same
US20110180271A1 (en) * 2010-01-26 2011-07-28 Tejas Research And Engineering, Lp Integrated Completion String and Method for Making and Using
US8708050B2 (en) 2010-04-29 2014-04-29 Halliburton Energy Services, Inc. Method and apparatus for controlling fluid flow using movable flow diverter assembly
US8522887B1 (en) * 2010-05-18 2013-09-03 Kent R. Madison Aquifier flow controlling valve assembly and method
US8261839B2 (en) 2010-06-02 2012-09-11 Halliburton Energy Services, Inc. Variable flow resistance system for use in a subterranean well
US8561704B2 (en) * 2010-06-28 2013-10-22 Halliburton Energy Services, Inc. Flow energy dissipation for downhole injection flow control devices
US8356668B2 (en) * 2010-08-27 2013-01-22 Halliburton Energy Services, Inc. Variable flow restrictor for use in a subterranean well
US8430130B2 (en) 2010-09-10 2013-04-30 Halliburton Energy Services, Inc. Series configured variable flow restrictors for use in a subterranean well
US8950502B2 (en) 2010-09-10 2015-02-10 Halliburton Energy Services, Inc. Series configured variable flow restrictors for use in a subterranean well
US8851180B2 (en) 2010-09-14 2014-10-07 Halliburton Energy Services, Inc. Self-releasing plug for use in a subterranean well
US8910716B2 (en) 2010-12-16 2014-12-16 Baker Hughes Incorporated Apparatus and method for controlling fluid flow from a formation
US20120168181A1 (en) * 2010-12-29 2012-07-05 Baker Hughes Incorporated Conformable inflow control device and method
CA2828689C (en) 2011-04-08 2016-12-06 Halliburton Energy Services, Inc. Method and apparatus for controlling fluid flow in an autonomous valve using a sticky switch
US8678035B2 (en) 2011-04-11 2014-03-25 Halliburton Energy Services, Inc. Selectively variable flow restrictor for use in a subterranean well
US9074466B2 (en) 2011-04-26 2015-07-07 Halliburton Energy Services, Inc. Controlled production and injection
US20120325323A1 (en) * 2011-06-23 2012-12-27 Baker Hughes Incorporated Production system and method of varying restrictions to flow along the same
AU2011380521B2 (en) 2011-10-31 2016-09-22 Halliburton Energy Services, Inc. Autonomous fluid control device having a reciprocating valve for downhole fluid selection
CA2848963C (en) 2011-10-31 2015-06-02 Halliburton Energy Services, Inc Autonomous fluid control device having a movable valve plate for downhole fluid selection
US8739880B2 (en) 2011-11-07 2014-06-03 Halliburton Energy Services, P.C. Fluid discrimination for use with a subterranean well
US9506320B2 (en) 2011-11-07 2016-11-29 Halliburton Energy Services, Inc. Variable flow resistance for use with a subterranean well
US8684094B2 (en) 2011-11-14 2014-04-01 Halliburton Energy Services, Inc. Preventing flow of undesired fluid through a variable flow resistance system in a well
NO336835B1 (no) 2012-03-21 2015-11-16 Inflowcontrol As Et apparat og en fremgangsmåte for fluidstrømstyring
US9080421B2 (en) * 2012-08-07 2015-07-14 Halliburton Energy Services, Inc. Mechanically adjustable flow control assembly
US9404349B2 (en) 2012-10-22 2016-08-02 Halliburton Energy Services, Inc. Autonomous fluid control system having a fluid diode
US9695654B2 (en) 2012-12-03 2017-07-04 Halliburton Energy Services, Inc. Wellhead flowback control system and method
US9127526B2 (en) 2012-12-03 2015-09-08 Halliburton Energy Services, Inc. Fast pressure protection system and method
SG11201502879WA (en) 2012-12-31 2015-05-28 Halliburton Energy Services Inc Distributed inflow control device
US20150023805A1 (en) * 2013-07-17 2015-01-22 Baker Hughes Incorporated Labyrinth Chamber with Helical Blade for a Submersible Well Pump and Method of Use
US9638000B2 (en) 2014-07-10 2017-05-02 Inflow Systems Inc. Method and apparatus for controlling the flow of fluids into wellbore tubulars
US20160076343A1 (en) * 2014-09-17 2016-03-17 Baker Hughes Incorporated Treating and completion system and method of treating a formation
US10871057B2 (en) 2015-06-30 2020-12-22 Schlumberger Technology Corporation Flow control device for a well
US20170051583A1 (en) * 2015-08-17 2017-02-23 Baker Hughes Incorporated Sand screen
US10260321B2 (en) 2016-07-08 2019-04-16 Baker Hughes, A Ge Company, Llc Inflow control device for polymer injection in horizontal wells
US10208575B2 (en) * 2016-07-08 2019-02-19 Baker Hughes, A Ge Company, Llc Alternative helical flow control device for polymer injection in horizontal wells
DK3540177T3 (da) 2018-03-12 2021-08-30 Inflowcontrol As Strømningsstyringsanordning og fremgangsmåde
US20210209276A1 (en) * 2020-01-08 2021-07-08 Control Components, Inc. Design method for three-dimensional tortuous path flow element
NO20201249A1 (en) 2020-11-17 2022-05-18 Inflowcontrol As A flow control device and method

Family Cites Families (53)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2837032A (en) * 1957-07-31 1958-06-03 Ira Milton Jones Filter for use with periodic suction pumps
US3323550A (en) * 1964-05-21 1967-06-06 Lee Co Fluid resistor
US4237978A (en) * 1979-07-30 1980-12-09 Texaco Inc. Method for cleaning a helical spring sand screen in a well
US4858644A (en) * 1988-05-31 1989-08-22 Otis Engineering Corporation Fluid flow regulator
US4951753A (en) * 1989-10-12 1990-08-28 Baker Hughes Incorporated Subsurface well safety valve
FR2668795B1 (fr) * 1990-11-02 1993-01-08 Inst Francais Du Petrole Methode pour favoriser la production d'effluents d'une zone de production.
JP2891582B2 (ja) * 1991-12-27 1999-05-17 株式会社ナガオカ 選択的隔離スクリーンの製造方法
NO306127B1 (no) * 1992-09-18 1999-09-20 Norsk Hydro As Fremgangsmate og produksjonsror for produksjon av olje eller gass fra et olje- eller gassreservoar
US5309988A (en) * 1992-11-20 1994-05-10 Halliburton Company Electromechanical shifter apparatus for subsurface well flow control
US5316081A (en) 1993-03-08 1994-05-31 Baski Water Instruments Flow and pressure control packer valve
NO954352D0 (no) 1995-10-30 1995-10-30 Norsk Hydro As Anordning for innströmningsregulering i et produksjonsrör for produksjon av olje eller gass fra et olje- og/eller gassreservoar
US5730223A (en) * 1996-01-24 1998-03-24 Halliburton Energy Services, Inc. Sand control screen assembly having an adjustable flow rate and associated methods of completing a subterranean well
WO1997037102A2 (en) * 1996-04-01 1997-10-09 Baker Hughes Incorporated Downhole flow control devices
US5896928A (en) * 1996-07-01 1999-04-27 Baker Hughes Incorporated Flow restriction device for use in producing wells
US5803179A (en) * 1996-12-31 1998-09-08 Halliburton Energy Services, Inc. Screened well drainage pipe structure with sealed, variable length labyrinth inlet flow control apparatus
NO320593B1 (no) * 1997-05-06 2005-12-27 Baker Hughes Inc System og fremgangsmate for produksjon av formasjonsfluid i en undergrunnsformasjon
US5881809A (en) * 1997-09-05 1999-03-16 United States Filter Corporation Well casing assembly with erosion protection for inner screen
US6030332A (en) * 1998-04-14 2000-02-29 Hensley; Gary L. Centrifuge system with stacked discs attached to the housing
US6276458B1 (en) * 1999-02-01 2001-08-21 Schlumberger Technology Corporation Apparatus and method for controlling fluid flow
US6343651B1 (en) * 1999-10-18 2002-02-05 Schlumberger Technology Corporation Apparatus and method for controlling fluid flow with sand control
CA2292278C (en) * 1999-12-10 2005-06-21 Laurie Venning A method of achieving a preferential flow distribution in a horizontal well bore
JP4433345B2 (ja) * 1999-12-16 2010-03-17 日立金属株式会社 リング磁石およびスピーカ
US7729756B2 (en) * 2000-01-18 2010-06-01 Siemens Aktiengesellschaft Measurement system for examining a section of tissue on a patient and the use of a measurement system of this type
US6289986B1 (en) * 2000-02-25 2001-09-18 Torque Control Systems Ltd. Pump rod drive and torque release mechanism
DE10013287A1 (de) * 2000-03-17 2001-09-20 Fuji Magnetics Gmbh Optical-Business-Card
EP1301686B1 (en) * 2000-07-21 2005-04-13 Sinvent AS Combined liner and matrix system
GB2376970B (en) 2000-09-28 2003-06-18 Schlumberger Technology Corp Well planning and design
US20020177955A1 (en) 2000-09-28 2002-11-28 Younes Jalali Completions architecture
FR2815073B1 (fr) * 2000-10-09 2002-12-06 Johnson Filtration Systems Elements de drain ayant une crepine consitituee de tiges creuses pour collecter notamment des hydrocarbures
US6371210B1 (en) * 2000-10-10 2002-04-16 Weatherford/Lamb, Inc. Flow control apparatus for use in a wellbore
GB2371319B (en) * 2001-01-23 2003-08-13 Schlumberger Holdings Completion Assemblies
US6622794B2 (en) * 2001-01-26 2003-09-23 Baker Hughes Incorporated Sand screen with active flow control and associated method of use
NO314701B3 (no) 2001-03-20 2007-10-08 Reslink As Stromningsstyreanordning for struping av innstrommende fluider i en bronn
US6644412B2 (en) * 2001-04-25 2003-11-11 Weatherford/Lamb, Inc. Flow control apparatus for use in a wellbore
NO313895B1 (no) * 2001-05-08 2002-12-16 Freyer Rune Anordning og fremgangsmÕte for begrensning av innströmning av formasjonsvann i en brönn
GB2376488B (en) * 2001-06-12 2004-05-12 Schlumberger Holdings Flow control regulation method and apparatus
EA005438B1 (ru) 2001-09-07 2005-02-24 Шелл Интернэшнл Рисерч Маатсхаппий Б.В. Регулируемое скважинное фильтрующее устройство
US6857475B2 (en) * 2001-10-09 2005-02-22 Schlumberger Technology Corporation Apparatus and methods for flow control gravel pack
US6899176B2 (en) * 2002-01-25 2005-05-31 Halliburton Energy Services, Inc. Sand control screen assembly and treatment method using the same
US7096945B2 (en) * 2002-01-25 2006-08-29 Halliburton Energy Services, Inc. Sand control screen assembly and treatment method using the same
CN1309266C (zh) * 2002-06-06 2007-04-04 摩托罗拉公司(在特拉华州注册的公司) 用于自组织通信网络中的移动节点的协议和结构
US7644773B2 (en) * 2002-08-23 2010-01-12 Baker Hughes Incorporated Self-conforming screen
US7055598B2 (en) * 2002-08-26 2006-06-06 Halliburton Energy Services, Inc. Fluid flow control device and method for use of same
NO318189B1 (no) 2003-06-25 2005-02-14 Reslink As Anordning og fremgangsmate for selektiv styring av fluidstromning mellom en bronn og omkringliggende bergarter
US7258166B2 (en) * 2003-12-10 2007-08-21 Absolute Energy Ltd. Wellbore screen
NO321438B1 (no) 2004-02-20 2006-05-08 Norsk Hydro As Fremgangsmate og anordning ved en aktuator
US7077200B1 (en) * 2004-04-23 2006-07-18 Schlumberger Technology Corp. Downhole light system and methods of use
US7228912B2 (en) * 2004-06-18 2007-06-12 Schlumberger Technology Corporation Method and system to deploy control lines
US7673678B2 (en) * 2004-12-21 2010-03-09 Schlumberger Technology Corporation Flow control device with a permeable membrane
US7413022B2 (en) * 2005-06-01 2008-08-19 Baker Hughes Incorporated Expandable flow control device
US7469743B2 (en) * 2006-04-24 2008-12-30 Halliburton Energy Services, Inc. Inflow control devices for sand control screens
US7857050B2 (en) 2006-05-26 2010-12-28 Schlumberger Technology Corporation Flow control using a tortuous path
US20080041588A1 (en) * 2006-08-21 2008-02-21 Richards William M Inflow Control Device with Fluid Loss and Gas Production Controls

Also Published As

Publication number Publication date
US20070272408A1 (en) 2007-11-29
GB2438482B (en) 2009-01-07
GB2438482A (en) 2007-11-28
GB0708043D0 (en) 2007-06-06
GB2438482A8 (en) 2007-11-29
US20110061877A1 (en) 2011-03-17
US7857050B2 (en) 2010-12-28
GB2438482A9 (en) 2008-03-06

Similar Documents

Publication Publication Date Title
NO20072671L (no) Stromningsstyring ved bruk av en snirklet bane.
NO20100020L (no) Innstromningsstyringsanordning
NO20060839L (no) Stromningsstyring
NO20071440L (no) Gassloftings-ventilsammenstilling
ITBO20050197A1 (it) Regolatore di pressione per gas e relativo metodo di montaggio e smontaggio
NO20092450L (no) Fremgangsmater og anordninger for fluidanalyse i bronnhull
NO20081150L (no) Sandsilstyresammenstilling forsterket med fosvinningshylse og sprengskive
NO20082109L (no) Anordning ved stromningsregulator
NO20081516L (no) Anordning og fremgangsmate for styring av innstromning
NO20080452L (no) A method and an apparatus for controlling a well barrier
NO20101279L (no) Ventilapparat for innstromningsstyring
NO20100407L (no) Nedihullsventil med trinnvis justerbare apne posisjoner, og hurtiglasingstrekk
NO20081345L (no) Pulsbreddemodulert nedihulls stromningsstyring
WO2011037914A3 (en) Inflow control device and methods for using same
EA201170507A1 (ru) Системы и способы управления дебитом скважины
GB2451029A (en) Drill string flow control valves and methods
NO20100565L (no) Vannavfoling (vann-interagering) som kan tilpasses i innstromningskontrollinnretning og fremgangsmate for anvendelse
NO20081623L (no) Stabilisering av en stromning langs en bronnboring.
NO20093074L (no) Apparat og fremgangsmater for a tillate fluidstromning innvendig i minst et filter og utvendig av et ror anbragt i en bronnboring
NO20074402L (no) Injeksjon ventil
NO20072985L (no) Dobbel platebarriereventil
ATE511044T1 (de) Schieberventil
NO20082717L (no) Fremgangsmate og anordning for hydraulisk a forbipassere et bronnverktoy
WO2007146744A3 (en) Fixed cone sleeve valve having cone supported by means downstream of the gate in its closed position
NO20083454L (no) Posisjonsregulator for aktuatorer i bronnhull

Legal Events

Date Code Title Description
FC2A Withdrawal, rejection or dismissal of laid open patent application