| 序号 | 专利名 | 申请号 | 申请日 | 公开（公告）号 | 公开（公告）日 | 发明人 |
|---|---|---|---|---|---|---|
| 161 | ANNULUS PRESSURE CONTROL DRILLING SYSTEMS AND METHODS | US11850479 | 2007-09-05 | US20080060846A1 | 2008-03-13 | Gary Belcher; Adrian Steiner; Kevin Schmigel; David Brunnert; Darcy Nott; Richard Todd; Jim Stanley; Simon Harrall |
| In one embodiment, a method for drilling a wellbore includes an act of drilling the wellbore by injecting drilling fluid through a tubular string disposed in the wellbore, the tubular string comprising a drill bit disposed on a bottom thereof. The drilling fluid exits the drill bit and carries cuttings from the drill bit. The drilling fluid and cuttings (returns) flow to a surface of the wellbore via an annulus defined by an outer surface of the tubular string and an inner surface of the wellbore. The method further includes an act performed while drilling the wellbore of measuring a first annulus pressure (FAP) using a pressure sensor attached to a casing string hung from a wellhead of the wellbore. The method further includes an act performed while drilling the wellbore of controlling a second annulus pressure (SAP) exerted on a formation exposed to the annulus. | ||||||
| 162 | Method and system for accessing subterranean deposits from the surface and tools therefor | US11982249 | 2007-10-31 | US20080060806A1 | 2008-03-13 | Joseph Zupanick |
| According to one embodiment, a system for accessing a subterranean zone from the surface includes a well bore extending from the surface to the subterranean zone, and a well bore pattern connected to the junction and operable to drain fluid from a region of the subterranean zone to the junction. | ||||||
| 163 | Method and system for accessing subterranean deposits from the surface and tools therefor | US11982015 | 2007-10-31 | US20080060804A1 | 2008-03-13 | Joseph Zupanick |
| According to one embodiment, a system for accessing a subterranean zone from the surface includes a well bore extending from the surface to the subterranean zone, and a well bore pattern connected to the junction and operable to drain fluid from a region of the subterranean zone to the junction. | ||||||
| 164 | Method and system for accessing subterranean deposits from the surface and tools therefor | US11982182 | 2007-10-31 | US20080060571A1 | 2008-03-13 | Joseph Zupanick |
| According to one embodiment, a system for accessing a subterranean zone from the surface includes a well bore extending from the surface to the subterranean zone, and a well bore pattern connected to the junction and operable to drain fluid from a region of the subterranean zone to the junction. | ||||||
| 165 | Drilling system and method | US11900178 | 2007-09-10 | US20080041149A1 | 2008-02-21 | Christian Leuchtenberg |
| A closed-loop circulating system for drilling wells has control of the flow rates in and out of the wellbore. Kicks and fluid losses are quickly controlled by adjusting the backpressure. Kick tolerance and tripping margins are eliminated by real-time determination of pore and fracture pressure. The system can incorporate a rotating BOP and can be used with underbalanced drilling. | ||||||
| 166 | Method for completing a well using increased fluid temperature | US10911223 | 2004-08-04 | US07306042B2 | 2007-12-11 | R. K. Bansal; David J. Brunnert; Michael Brian Grayson; James Ken Whanger; Evan Lowe; Abdolreza Gharesi; Tim Hanberry |
| Methods for forming a portion of a wellbore are provided. The well is drilled from a first selected depth to a second selected depth to form a bore through a surrounding earth formation. A fluid heating apparatus is disposed within the bore on a working string. Fluid is then heated by moving the fluid through the fluid heating apparatus in the wellbore. The process of circulating fluid adjacent the earth formation serves to also heat the surrounding formation so as to increase the fracture gradient. The fluid heating process may be conducted during a drilling procedure. Alternatively, the fluid heating process may be conducted in connection with a liner hanging and cementing process. A fluid flow restrictor is provided along a run-in assembly that serves to warm the fluids as they are circulated. The warm fluids provide convective heat to the surrounding earth formation, thereby reducing the formation's fracture gradient. | ||||||
| 167 | Reverse Circulation Pressure Control Method and System | US11693574 | 2007-03-29 | US20070278007A1 | 2007-12-06 | Sven Krueger; Volker Krueger; Jens Bruns; Roger Fincher; Larry Watkins; Peter Aronstam; Peter Fontana |
| A system for reverse circulation in a wellbore include equipment for supplying drilling fluid into the wellbore bit via at least an annulus of the wellbore and returning the drilling fluid to a surface location via at least a bore of a wellbore tubular. The system also includes devices for controlling the annulus pressure associated with this reverse circulation. In one embodiment, an active pressure differential device increases the pressure wellbore annulus to at least partially offset a circulating pressure loss. In other embodiments, the system includes devices for decreasing the pressure in the annulus of the wellbore. For offshore application, annulus pressure is decreased to accommodate the pore and fracture pressures of a subsea formation. In still other embodiments, annulus pressure is decreased to cause an underbalanced condition in the well. | ||||||
| 168 | Wired casing | US10832804 | 2004-04-27 | US07303022B2 | 2007-12-04 | Frederick T. Tilton; David J. Brunnert |
| The present invention involves a method and apparatus for monitoring conditions downhole and/or manipulating downhole tools by placing electrical wire on a casing string while drilling with casing. Wire is inserted into a groove within the casing string while drilling with the casing string into a formation. The wire connects downhole equipment to surface equipment. Multiple casing strings may be drilled into the formation while wire is simultaneously inserted into a groove therein. | ||||||
| 169 | Casing with isolated annular space | US10539676 | 2003-12-15 | US07303016B2 | 2007-12-04 | Einar Kristiansen |
| The invention is comprised of (see FIG. 1) an inner pipe (2), and an outer pipe (3), and two end subs (1). An isolated circular hollowed space is contained in between these components. The isolated space can be used for transport of different medias down into the well, this can be vacuum, air, gas, acids, solids, tracers, or other well stimulating medias. The end subs (1) can be connected to the casing in the well and become an integrated part of the casing. The invention can be cemented on the outside like the casing can. The invention can be perforated after installed in the well. | ||||||
| 170 | Drill string flow control valves and methods | US11788660 | 2007-04-20 | US20070246265A1 | 2007-10-25 | Luc deBoer |
| Drill string flow control valves and more particularly, drill string flow control valves for prevention of u-tubing of fluid flow in drill strings are provided. Drill string flow control valves may comprise a valve housing, a valve sleeve axially movable within a valve housing from a closed position to an open position, a biasing mechanism for biasing the valve sleeve into the closed position, and a plurality of pressure ports for allowing a differential pressure to be exerted on the valve sleeve. The differential pressure exerted on the valve sleeve may be the result of an upstream pressure and a downstream pressure. By allowing a differential pressure resulting from a fluid flow to act on the valve sleeve, u-tubing in a drill string can be prevented or substantially reduced. Methods of use are also provided. | ||||||
| 171 | Method for the circulation of gas when drilling or working a well | US11081605 | 2005-03-17 | US07281593B2 | 2007-10-16 | Adrian Steiner; Richard Allan McAlary; Ross Michael Krill |
| A method for the circulation of gas when drilling or working a well. The method includes the step of pressurizing at least two chambers of a multi-chambered accumulator with inert gas. The chambers of the multi-chambered accumulator are operatively connected to one another and individually or in combination isolatable from each other. The method also includes isolating at least one chamber of the accumulator that has been pressurized with inert gas such that during drilling or working the well the isolated chamber remains pressurized with gas that has not been mixed with well gas returns. Pressurized gas is extracted from one or more of the non-isolated chambers of the accumulator and injected into the well. At least a portion of the gas returns from the well is collected, compressed and delivered to at least one of the non-isolated chambers of the multi-chamber accumulator. | ||||||
| 172 | Method for extracting coal bed methane with source fluid injection | US10888558 | 2004-07-09 | US07278497B2 | 2007-10-09 | Jim Terry; Tom Bailey; Adrian Vuyk; Alejandro Coy; Ron Divine; Darrell Johnson |
| The present invention generally provides an inexpensive method for drilling a multilateral wellbore where the pressure exerted on a formation of interest by a column of drilling fluid may be controlled. In one aspect, a method for drilling a lateral wellbore from a main wellbore is provided, including running a string of casing with an injection line connected thereto into the main wellbore, wherein the injection line is disposed along an outer side of the casing and a portion of the casing corresponding to a starting depth of the lateral wellbore is made from a drillable material; running a drillstring through the casing to the starting depth of the lateral wellbore, wherein the drillstring comprises a drill bit; injecting drilling fluid through the drill sting; and injecting a second fluid, having a density less than that of the drilling fluid, through the injection line at a rate corresponding to an injection rate of the drilling fluid to control hydrostatic pressure exerted by a column of the drilling fluid and the second fluid returning through the casing. | ||||||
| 173 | CLOSED LOOP MULTIPHASE UNDERBALANCED DRILLING PROCESS | US11676616 | 2007-02-20 | US20070199714A1 | 2007-08-30 | Gregory Chitty; Jeffrey Saponja; David Hosie |
| The present invention provides apparatus and methods for handling fluids returning from a well. The fluids are introduced into a separator and a separated gas stream is recovered or recycled. The gas stream may comprise more than one phase. The separated gas stream is urged through a multiphase pump before it is recovered. Alternatively, the return fluids may pass through a multiphase pump before it is introduced into the separator. | ||||||
| 174 | Methods and apparatus for drilling open hole | US11358435 | 2006-02-21 | US20070193778A1 | 2007-08-23 | James Wooten |
| Methods of drilling open hole and apparatus for achieving same are described. One apparatus comprises a pressure control component strategically positionable in or above a wellbore to isolate downhole pressure while drilling open hole, the pressure control component comprising a rotational drive member effective to rotate a tubular member while drilling open hole. This abstract allows a searcher or other reader to quickly ascertain the subject matter of the disclosure. It will not be used to interpret or limit the scope or meaning of the claims. | ||||||
| 175 | Internal riser rotating control head | US11284308 | 2005-11-21 | US07258171B2 | 2007-08-21 | Darryl A. Bourgoyne; Don M. Hannegan; Thomas F. Bailey; James W. Chambers; Timothy L. Wilson |
| A holding member provides for releasably positioning a rotating control head assembly in a subsea housing. The holding member engages an internal formation in the subsea housing to resist movement of the rotating control head assembly relative to the subsea housing. The rotating control head assembly is sealed with the subsea housing when the holding member engages the internal formation. An extendible portion of the holding member assembly extrudes an elastomer between an upper portion and a lower portion of the internal housing to seal the rotating control head assembly with the subsea housing. Pressure relief mechanisms release excess pressure in the subsea housing and a pressure compensation mechanism pressurize bearings in the bearing assembly at a predetermined pressure. | ||||||
| 176 | Drilling assembly and method for drilling a barehole into geological formations | US11426210 | 2006-06-23 | US07243743B2 | 2007-07-17 | Johannes Van Wijk |
| A drilling assembly for drilling a borehole into geological formations. The assembly comprises a drilling shaft and a pump device, both placable in the borehole. The drilling shaft comprises a drilling head, and the pump device comprises a sealing device for sealing a first borehole part below the sealing device from a second borehole part above the sealing device. The pump device is enabled to pump a fluid from the first borehole part to the second borehole part. | ||||||
| 177 | Multi seam coal bed/methane dewatering and depressurizing production system | US11190166 | 2005-07-27 | US07243738B2 | 2007-07-17 | Robert Gardes |
| A process for underbalanced drilling into multiple coal and shale formations, and dewatering the drilled formations, which includes drilling a first borehole through several coal seams to a certain depth; lowering an upstock on the end of a carrier string to the depth of the upper coal seam; lowering a drill string in the carrier string, and angling off of the upstock, to drill a lateral or horizontal borehole within the coal seam; repeating the process for the second coal seam; setting a packer in place above the first coal seam in the annulus between the cased borehole and the carrier string; forming perforations in the wall of the carrier string below the packer; retrieving the upstock from the carrier string; lowering an electrical submersible pump to the bottom of the principal borehole; pumping water from the sump portion to the surface within the annulus of the second drill string. | ||||||
| 178 | Well Treatment System and Method | US11609425 | 2006-12-12 | US20070079960A1 | 2007-04-12 | Brenden Grove; Mark Duhon; Lawrence Behrmann; Claude Jones |
| A well treatment system of the present invention includes a housing forming a sealed surge chamber, and a surge charge disposed within the sealed surge chamber, wherein the surge charge is adapted upon activation to penetrate the housing and to not penetrate material exterior of the housing. Fluid communication is created between the surge chamber and the wellbore when the housing is penetrated by the surge charge. The penetration permits wellbore fluid to flow quickly into the surge chamber. Fluid flow into the surge chamber may enhance a surge of flow from the formation into the wellbore. | ||||||
| 179 | Closed loop multiphase underbalanced drilling process | US10192784 | 2002-07-10 | US07178592B2 | 2007-02-20 | Gregory H. Chitty; Jeffrey Charles Saponja; David Graham Hosie |
| The present invention provides apparatus and methods for handling fluids returning from a well. The fluids are introduced into a separator and a separated gas stream is recovered or recycled. The gas stream may comprise more than one phase. The separated gas stream is urged through a multiphase pump before it is recovered. Alternatively, the return fluids may pass through a multiphase pump before it is introduced into the separator. | ||||||
| 180 | Control systems and methods for active controlled bottomhole pressure systems | US10936858 | 2004-09-09 | US07174975B2 | 2007-02-13 | Sven Krueger; Volker Krueger; Harald Grimmer; Roger Fincher; Larry Watkins; Peter Aronstam; Peter Fontana |
| Methods and control systems are provided for a wellbore drilling system having an active differential pressure device (APD device) in fluid communication with a returning fluid. The APD Device creates a differential pressure across the device, which reduces the pressure below or downhole of the device. In embodiments, a control unit controls the APD Device to provide a selected pressure differential at a wellbore bottom, adjacent a casing shoe, in an intermediate wellbore location, or in a casing. In one arrangement, the control system is pre-set at the surface such that the APD Device provides a substantially constant pressure differential. In other arrangements, the control system measures one or more parameters (e.g., wellbore pressure, formation parameters, BHA parameters, etc.) and adjusts an operating parameter of the APD Device to provide a desired pressure differential. Devices such as an adjustable bypass can be used to control the APD Device. | ||||||
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