| 序号 | 专利名 | 申请号 | 申请日 | 公开（公告）号 | 公开（公告）日 | 发明人 |
|---|---|---|---|---|---|---|
| 181 | DOWNHOLE SAFETY VALVE APPARATUS AND METHOD | EP05803107.1 | 2005-10-07 | EP1797279A2 | 2007-06-20 | BOLDING, Jeffrey, L.; SMITH, David, R. |
| A safety valve (100) replaces an existing safety valve (102) in order to isolate a production zone from a tubing string when closed. Preferably the safety valve (100) includes a flow interruption device (106) displaced by an operating conduit extending from a surface location to the safety valve (100) through the inside of the production tubing. A by-pass conduit (150) allows communication from a surface location to the production zone through the safety valve (100) without affecting the operation of the safety valve (100). | ||||||
| 182 | METHOD OF STIMULATING LONG HORIZONTAL WELLS TO IMPROVE WELL PRODUCTIVITY | EP04779653.7 | 2004-07-30 | EP1704300A1 | 2006-09-27 | AL-MURAIKHI, Ahmed, J. |
| This invention relates to the field of treating subterranean formations to increase production. The method of the current invention is particularly useful in hydrocarbon wells that are long, for example, in excess of one kilometer. The method providing increasing production from a primary wellbore by intersecting this wellbore with a secondary wellbore near to the hydrocarbon production zone such that acid treatment or other treatment can be directed to the intersection. | ||||||
| 183 | A method of stimulating a well | EP01610092.7 | 2001-08-31 | EP1184537B1 | 2005-11-30 | Hansen, Jens Henrik |
| 184 | MODELING, SIMULATION AND COMPARISON OF MODELS FOR WORMHOLE FORMATION DURING MATRIX STIMULATION OF CARBONATES | EP03735495.8 | 2003-05-29 | EP1509674A1 | 2005-03-02 | PANGA, Mohan; BALAKOTAIAH, Vemuri; ZIAUDDIN, Murtaza |
| A new averaged/continuum model is presented for simulation of wormhole formation during matrix stimulation of carbonates. The averaged model presented here takes into account the pore level physics by coupling the local pore scale phenomena to the macroscopic variables (Darcy velocity, pressure and reactant cup-mixing concentration) through the structure-property relationships (permeability-porosity, average pore size-porosity and interfacial area-porosity) and the dependence of the fluid-solid mass transfer coefficient and fluid phase dispersion coefficient on the evolving pore scale variables (average pore size, local Reynolds and Schmidt numbers).This model allows better predictions of the flow channeling so that the matrix treatment may be adjusted to promote wormhole formations. | ||||||
| 185 | METHOD FOR INCREASING PRODUCTION FROM A WELLBORE | EP03707764.1 | 2003-02-06 | EP1497530A1 | 2005-01-19 | PIA, Giancarlo, T. |
| Method for recovering productivity of an existing well. First, an assembly is inserted into a wellbore, the assembly includes a tubular member (135) for transporting drilling fluid downhole and an under-reamer (125) disposed at the end of the tubular member. Next, the assembly is positioned near a zone of interest and drilling fluid (140) is pumped down the tubular member (135). The drilling fluid (140) is used to create an underbalanced condition where a hydrostatic pressure in the annulus (175) is below a zone of interest pressure. The under-reamer (125) is activated to enlarge the wellbore diameter and remove a layer of skin for a predetermined length. During the under-reaming operation, the hydrostatic pressure is maintained below the zone of interest pressure, thereby allowing wellbore fluid (145) to migrate up the annulus (175) and out of the wellbore. Upon completion, the under-reamer (125) is deactivated and the assembly is removed from the wellbore. | ||||||
| 186 | Downhole tool and method of fracturing a well formation | EP04252607.9 | 2004-05-05 | EP1489260A1 | 2004-12-22 | Surjaatmadja, Jim B. |
A downhole tool for fracturing a subterranean formation comprising a plurality of discharge jets or nozzles located in a spaced relation to a wall of the formation to form an annulus between the nozzles and the formation. An acid-containing, stimulation fluid is pumped at a predetermined pressure through the nozzles, into the annulus and against the wall of the formation. A gas is pumped into the annulus so that the stimulation fluid mixes with the gas to generate foam before the mixture is jetted towards the formation to impact the wall of the formation. The tool is adapted to bend, or tilt, so that the discharge jets can come in to proximity to the formation being fractured. |
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| 187 | METHOD AND APPARATUS FOR STIMULATION OF MULTIPLE FORMATION INTERVALS | EP01909197 | 2001-02-14 | EP1264075A4 | 2004-08-11 | TOLMAN RANDY C; CARLSON LAWRENCE O; KINISON DAVID A; NYGAARD KRIS J; GOSS GLENN S; SOREM WILLIAM A; SHAFER LEE L |
| The invention provides an apparatus and method for perforating and treating multiple intervals of one or more subterranean formations (86) intersected by a wellbore by deploying a bottom-hole assembly having a perforating device (134) and at least one sealing mechanism (120) within said wellbore. The perforating device (134) is used to perforate the first interval to be treated. Then the bottom-hole assembly is positioned within the wellbore such that the sealing mechanism (120), when actuated, establishes a hydraulic seal in the wellbore to positively force fluid to enter the perforations (230, 231) corresponding to the first interval to be treated. A treating fluid is then pumped down the wellbore and into the perforations (230, 231) created in the perforated interval. The sealing mechanism (120) is released, and the steps are then repeated for as many intervals as desired, without removing the bottom hole assembly from said wellbore. | ||||||
| 188 | A method of controlling production from a wellbore | EP03014867.0 | 1998-05-01 | EP1355170A3 | 2004-06-09 | Legett, Nigel; Johnson, Michael H.; Harrell, John W.; Lembecke, Jeffry J.; Hickey, Kurt A.; Tubel, Paulo S. |
A method of controlling production from a wellbore (12) comprises providing a producing string (106) carrying an electrical submersible pump (114,516) for pumping wellbore fluid to the surface, said string carrying a high voltage line (52) from a surface location to the pump for providing electrical power to the pump; and providing an optical fiber (122) carrying at least one fiber optic sensor (40) along the high voltage line for taking measurements of a wellbore parameter. |
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| 189 | An injection well with a fibre optic cable to measure fluorescence of bacteria present | EP03014869.6 | 1998-05-01 | EP1355167A3 | 2004-05-19 | Johnson, Michael H.; Harrell, John W.; Lembecke, Jeffery J.; Hickey, Kurt A.; Tubel, Paolo S.; Williams, Glynn, The Old Post Office; Leggett, Nigel, Barnsell House |
An injection well has at least one fiber optic cable disposed therein in a location advantageous to irradiate a portion of the strata of the formation immediately surrounding the well to measure fluorescence of bacteria present. |
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| 190 | A method of generating electric power in a wellbore | EP03014865.4 | 1998-05-01 | EP1357403A2 | 2003-10-29 | The designation of the inventor has not yet been filed |
A method of generating electric power in a wellbore comprises placing a light cell at a desired depth in the wellbore, said light cell generating electric energy upon receiving light energy, and supplying light energy from a source thereof to the light cell for generating the electrical energy downhole. |
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| 191 | A light actuated system for use in a wellbore | EP03014866.2 | 1998-05-01 | EP1357402A2 | 2003-10-29 | The designation of the inventor has not yet been filed |
A light actuated system for use in a wellbore (12,16,18) comprises a light actuated transducer (40) in the wellbore, said light actuated transducer adapted to transform a physical state of a component thereof upon application of optical energy; an optical waveguide (56) conveying the optical energy from a source thereof (46b) to the light actuated transducer; and a control device (46a) in the wellbore operated at least in part by the said change in the physical state of the component of the light actuated transducer. |
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| 192 | METHOD AND APPARATUS FOR STIMULATION OF MULTIPLE FORMATION INTERVALS | EP01909197.4 | 2001-02-14 | EP1264075A1 | 2002-12-11 | TOLMAN, Randy C.; CARLSON, Lawrence, O.; KINISON, David, A.; NYGAARD, Kris, J.; GOSS, Glenn, S.; SOREM, William, A.; SHAFER, Lee L. |
| The invention provides an apparatus and method for perforating and treating multiple intervals of one or more subterranean formations (86) intersected by a wellbore by deploying a bottom-hole assembly having a perforating device (134) and at least one sealing mechanism (120) within said wellbore. The perforating device (134) is used to perforate the first interval to be treated. Then the bottom-hole assembly is positioned within the wellbore such that the sealing mechanism (120), when actuated, establishes a hydraulic seal in the wellbore to positively force fluid to enter the perforations (230, 231) corresponding to the first interval to be treated. A treating fluid is then pumped down the wellbore and into the perforations (230, 231) created in the perforated interval. The sealing mechanism (120) is released, and the steps are then repeated for as many intervals as desired, without removing the bottom hole assembly from said wellbore. | ||||||
| 193 | Method of decomposing gas hydrates | EP97307516.1 | 1997-09-25 | EP0834541B1 | 2002-01-02 | Chatterji, Jiten; Griffith, James E. |
| 194 | A METHOD FOR INTRODUCING MATERIALS INTO A SOLID OR SEMI-SOLID MEDIUM | EP96945172 | 1996-07-02 | EP0853508A4 | 1999-01-20 | SUCHECKI RONALD J JR; BURTON DUDLEY J |
| It is an object of the present invention to provide a novel means for introducing materials, such as organisms, chemicals, bio-active chemicals, and inert materials, into a contaminated madium, by means of a sudden burst of gas. | ||||||
| 195 | High vacuum extraction of soil contaminants along preferential flow paths | EP95302793.5 | 1995-04-26 | EP0679450B1 | 1998-10-07 | Duffney, Elliott N.; Tornatore, Paul M.; Huber, Scott M.; Hess, Ronald E. |
| 196 | Method and apparatus for erosive stimulation of open hole formations | EP95302209.2 | 1995-04-03 | EP0679797A3 | 1997-01-29 | Best, Jim Edward; Smith, Donald Alexander |
There is described an improved apparatus and method of treating a section of unlined well bore comprising the steps of establishing a flow path from the top of the well bore to a location opposite the section of unlined well bore to be treated, pumping an erosive fluid through the flow path at a predetermined rate and pressure, directing a stream of the erosive fluid against a surface of the section of well bore to be treated to cause the initiation of a cut thereinto, and moving the stream of erosive fluid past a length of the surface to be treated to extend the cut formed therein in the direction of movement of the stream. |
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| 197 | Vertical isolation system for two-phase vacuum extraction of soil and groundwater contaminants | EP96304085.2 | 1996-06-05 | EP0747142A1 | 1996-12-11 | Williams, Richard A.; Hess, Ronald E.; Salotti, Michael T.; Thomasser, John F.; Huber, Scott M.; Duffney, Eliott N.; Mancini, Alfonso R. |
A process and apparatus for removing contaminants from a contaminated area (12) of the subsurface (18,20) which comprises providing a borehole (42) in the contaminated area; placing in the borehole a perforated riser pipe (44) inside of which is situated a vacuum extraction pipe (30) with an opening situated within the perforated riser pipe, wherein a packing (61) is situated in a portion of the annular space between the vacuum extraction pipe and the perforated riser pipe; applying a vacuum to the vacuum extraction pipe to draw gases and liquid from the subsurface into the perforated riser pipe below the packing and from the riser pipe into the vacuum extraction pipe and transport both the gases and the liquid to the surface as a common stream; forming from the common stream a stream which is primarily liquid and a stream which is primarily gaseous; and removing contaminants from at least one of the liquid stream and the gaseous stream. |
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| 198 | Method and apparatus for erosive stimulation of open hole formations | EP95302209.2 | 1995-04-03 | EP0679797A2 | 1995-11-02 | Best, Jim Edward; Smith, Donald Alexander |
There is described an improved apparatus and method of treating a section of unlined well bore comprising the steps of establishing a flow path from the top of the well bore to a location opposite the section of unlined well bore to be treated, pumping an erosive fluid through the flow path at a predetermined rate and pressure, directing a stream of the erosive fluid against a surface of the section of well bore to be treated to cause the initiation of a cut thereinto, and moving the stream of erosive fluid past a length of the surface to be treated to extend the cut formed therein in the direction of movement of the stream. |
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| 199 | Multi-mode testing tool | EP91103721.6 | 1985-03-12 | EP0435856A3 | 1992-01-02 | Ringgenberg, Paul David |
A multi-mode testing tool operable as a drill pipe tester, formation tester, nitrogen displacement valve or circulation valve, comprises a housing defining a longitudinal bore (370), and valve means (330) operable in at least a circulation valve mode and a displacement valve mode. An operating means (260) is provided to change the valve means between valve modes responsive to changes in pressure near the tool in the well bore, the operating means including a fluid filled chamber (210), a pressure responsive double-acting piston means (168,190,192), two longitudinally spaced piston stop means (127,146), and a ball and slot ratchet means (164,186). |
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| 200 | Verfahren und Vorrichtung zum Ermitteln des Injektionsdruckes bei baulichen Injektionen | EP81106472.4 | 1981-08-20 | EP0047878A2 | 1982-03-24 | Heimgartner, Hans; Wirz, Karl |
Zwischen einem mit einer Injektionspumpe verbundenen Rohrabschnitt (2) und einem Rohrendteil (4) ist ein Druckmessteil (3) angeordnet. Der Druckmessteil (3) ist mit einer Druckmessstelle (8) versehen, die durch eine im Innern eines Gehäuseteils (10) angeordnete Messkammer festgelegt ist. In dieser Messkammer liegt der druckbeaufschlagte Teil eines Druckmessumformers, der dem im Injektionsmedium herrschenden Druck entsprechende elektrische Signale erzeugt, die über ein Kabel (18) einer Signal-auswertestelle zugeführt werden. Die Messstelle (8) liegt nahe der Auslassöffnung (4a) des Rohrendteiles (4). Zwischen dieser Auslassöffnung (4a) und der Druckmessstelle (8) ist ein Packer (7) angeordnet, der den Ringraum (6) zwischen dem Rohrendteil (4) und der Wandung (1a) des Bohrloches (1) abdichtet. Da die Druckmessung im Innern der Zuleitung (2,14,4) für das Injektionsmedium erfolgt, wird ein unverfälschtes Messergebnis erhalten. Wegen der unmittelbaren Nähe der Messstelle (8) zur Injektionsstelle (5) ist der gemessene Druck im wesentlichen gleich dem Injektionsdruck an der Injektionsstelle (5). |
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