| 序号 | 专利名 | 申请号 | 申请日 | 公开（公告）号 | 公开（公告）日 | 发明人 |
|---|---|---|---|---|---|---|
| 241 | Wellbore primary barrier and related systems | US09264546 | 1999-03-07 | US06209636B1 | 2001-04-03 | John D. Roberts; Jan Drechsler; Tom Salversen; Tom Unsgaard; Eirik Enerstvedt; William A. Blizzard, Jr.; Dale E. Langford; Thurman B. Carter |
| A new wellbore apparatus has been invented which, in certain aspects, has anchor apparatus for anchoring the wellbore apparatus in a bore, the anchor apparatus actuated by fluid under pressure supplied thereto, and sealing apparatus selectively inflatable to close off the bore to fluid flow therethrough, and temperature compensating apparatus for maintaining a desired fluid pressure in the sealing apparatus to prevent it from bursting or deflating. A method for closing off a bore in a well has been invented which, in certain aspects, includes installing wellbore apparatus in the bore, the wellbore apparatus comprising anchor apparatus for anchoring the wellbore apparatus in a bore, the anchor apparatus actuated by fluid under pressure supplied thereto, and sealing apparatus interconnected with the anchor apparatus and selectively inflatable with fluid under pressure to close off the bore to fluid flow therethrough, and the wellbore apparatus upon anchoring in the bore and inflation of the sealing apparatus including a primary barrier in the bore. | ||||||
| 242 | Positioning and conveying well apparatus and method | US09690158 | 2000-10-17 | US06209635B1 | 2001-04-03 | Mikhail Gotlib; Herve Ohmer; Mark W. Brochman |
| In a broad aspect, the invention may include a nipple, a deflector, and a conveying tool. The nipple may include an upper sealing surface and a lower sealing surface. The nipple may also include a discriminator/muleshoe having an alignment profile and an alignment slot. A protuberance/bump may be disposed in the alignment slot. The deflector may include an upper seal and a lower seal adapted for engagement with the upper and lower sealing surfaces, respectively, on the nipple. When the upper and lower seals are engaged with the upper and lower sealing surfaces, fluid circulation is substantially restricted thereby resulting in a increase in pressure that is detectable at the earth's surface. This pressure increase provides a signal that the deflector is properly positioned in the nipple. The conveying tool may include a flexible arm having a latching finger that is releasably engageable with a latching profile in the deflector. The latching profile may be on an inclined, concave surface of a whipstock. Related methods are also provided. | ||||||
| 243 | High pressure internal sleeve for use with easily drillable exit ports | US09339864 | 1999-06-25 | US06206111B1 | 2001-03-27 | Radu Nicolae Nistor |
| A joint of tubular casing with a pre-formed window in its sidewall, has a tubular sleeve fixedly attached to the interior of the tubular casing by a plurality of shearable fastners. The exterior surface of the sleeve is sealed to the interior surface of the tubular casing on opposing sides of the window using a pair of high pressure seal assemblies. The window cavity is filled with a fluid and then the window is covered with one or more layers of a composite material such as fiberglass. In use, the joint of tubular casing is run down to the depth of interest in an earth borehole, and then the window is oriented with respect to the formation of interest at the depth. The joint of tubular casing is then cemented in place, after which the tubular sleeve is retrieved by the use of a fishing tool causing the set screws to shear upon the upward movement of the fishing tool. After the interior sleeve is retrieved, a whipstock is lowered into the cased borehole, until it is oriented and anchored therein. | ||||||
| 244 | Production well telemetry system and method | US09353565 | 1999-07-14 | US06192988B1 | 2001-02-27 | Paulo Tubel |
| A downhole production well control system is provided for automatically controlling downhole tools in response to sensed selected downhole parameters. The production well having a production tubing string therein with multiple branches, i.e., zones. Communication and transmission of power (i.e. telemetry) over the production tubing string is by way of a combination of a hardwire system in the main borehole and a short hop system at the branches or laterals. Each zone includes a downhole control system and appropriate completion devices for controlling fluid flow. An acoustic or electromagnetic transceiver is associated with each control system for communication and/or transmission of power. An electrical conductor runs from the surface downhole along the production tubing string in the main borehole for communication and/or transmission of power, hardwired systems are well known. The conductor is connected to an acoustic or electromagnetic transceiver disposed at the production tubing string in the main borehole near each branch. These transceivers communicate with and/or transfer power to corresponding transceivers at the branches (i.e., short hop communications), which is communicated and/or transferred along the production tubing string on the conductor (i.e., uphole or downhole). | ||||||
| 245 | Method and apparatus for the remote control and monitoring of production wells | US09003836 | 1998-01-07 | US06192980B1 | 2001-02-27 | Paulo S. Tubel; Albert A. Mullins, II; Kevin R. Jones |
| A system adapted for controlling and/or monitoring a plurality of production wells from a remote location is provided. This system is capable of controlling and/or monitoring: (1) a plurality of zones in a single production well; (2) a plurality of zones/wells in a single location (e.g., a single platform); or (3) a plurality of zones/wells located at a plurality of locations (e.g., multiple platforms). The multizone and/or multiwell control system of this invention is composed of multiple downhole electronically controlled electromechanical devices and multiple computer based surface systems operated from multiple locations. Important functions for these systems include the ability to predict the future flow profile of multiple wells and to monitor and control the fluid or gas flow from either the formation into the wellbore, or from the wellbore to the surface. The control system of this invention is also capable of receiving and transmitting data from multiple remote locations such as inside the borehole, to or from other platforms, or from a location away from any well site. | ||||||
| 246 | Method and apparatus for sealing the juncture between a vertical well and one or more horizontal wells | US42572195 | 1995-04-20 | US5520252C1 | 2001-01-30 | MCNAIR ROBERT J |
| 247 | Method and system for drilling and completing underbalanced multilateral wells utilizing a dual string technique in a live well | US26270 | 1998-02-19 | US06065550A | 2000-05-23 | Robert Gardes |
| A method and system of drilling multiple radial wells using underbalanced drilling, by first drilling a principal wellbore; then providing a first carrier string having a deflection member on its lowermost end to a certain depth within the principal wellbore; orienting the deflection member into a predetermined direction; lowering a second drill string, such as coiled tubing or segmented drill pipe, down the bore of the carrier string, so that the drill bit on the end of the second string is deflected by the deflection member in the predetermined direction from the principal wellbore and a first multilateral well is drilled. When coiled tubing is used, fluid is pumped downhole through the annulus of the coiled tubing, and into an annular space between the coiled tubing and the carrier string so that it co-mingles with produced hydrocarbons; and the co-mingled fluids and any hydrocarbons are returned to the rig through the annular space between the borehole and the carrier string. When segmented drill pipe is used, fluid is pumped down the bore of the drill pipe and down the annular space between the carrier string and the borehole, and fluid and any hydrocarbons are returned up the annular space between the drill pipe and the carrier string; in either method, maintaining an underbalanced borehole, so that addtional multilateral wells may be completed while the well is alive and producing. | ||||||
| 248 | Method of obtaining improved geophysical information about earth formations | US948150 | 1997-10-09 | US6065538A | 2000-05-23 | Nils Reimers; John W. Harrell; James V. Leggett, III; Paulo S. Tubel |
| The present invention provides a method for forming wellbores. In one method, one or more wellbores are drilled along preplanned paths based in part upon seismic surveys performed from the surface. An acoustic transmitter conveyed in such wellbores transmits acoustic signals at a one or more frequencies within a range of frequencies at a plurality of spaced locations. A plurality of substantially serially spaced receivers in the wellbores and/or at surface receive signals reflected by the subsurface formations. The sensors may be permanently installed in the boreholes and could be fiber optic devices. The receiver signals are processed by conventional geophysical processing methods to obtain information about the subsurface formations. This information is utilized to update any prior seismographs to obtain higher resolution seismographs. The improved seismographs are then used to determine the profiles of the production wellbores to be drilled. Borehole seismic imaging may then be used to further improve the seismographs and to plan future wellbores. Cross-well tomography may be utilized to further update the seismographs to manage the reservoirs. The permanently installed sensors may also be used to monitor the progress of fracturing in nearby wells and thereby provide the necessary information for controlling fracturing operations. | ||||||
| 249 | Method and apparatus for providing selective wellbore access | US106594 | 1998-06-29 | US6053254A | 2000-04-25 | John C. Gano |
| Disclosed is an improved method and apparatus for providing selective access to either a main well or a lateral well extending from the main well. A sleeve assembly installed in the junction of a main and lateral well includes a housing with a side window and a slidable internal sleeve for locating in either an "up" position or a "down" position. When the internal sleeve is "up", the side window is uncovered so that downhole tools select the main wellbore by gravity. When the internal sleeve is "down", it covers the side window and guides downhole tools into the lateral well. When first making a lateral well, the lateral wellbore may be lined through a window in the main wellbore casing and a window opened in the wall of the lateral wellbore liner, in vertical alignment with the main well flow conductor. A sleeve assembly installed in the lateral wellbore liner, proximate the liner window includes a housing with a window and a slidable internal sleeve for locating in either an "up" position or a "down" position. When the internal sleeve is "up", the lateral liner window is uncovered so that downhole tools select the main wellbore by gravity. When the internal sleeve is "down", it covers the lateral liner window and guides downhole tools into the lateral well. | ||||||
| 250 | Method and apparatus for deploying a well tool into a lateral wellbore | US54365 | 1998-04-02 | US5975208A | 1999-11-02 | Robert T. Brooks |
| A deployment tool for communicating a well tool from a generally vertical wellbore to a lateral wellbore includes a hollow tube having a generally uniform inside diameter. The tube includes at least one flex portion disposed intermediate a first end and a second end of the tube to allow for angular deflection of the second end of the tube with respect to the first end of the tube. The flex portion also maintains the generally uniform inside diameter of the tube during the angular deflection. The deployment tool also includes a locking device attached to the first end of the tube for releasably securing the first end of the tube at a selected location in the vertical wellbore adjacent to the lateral wellbore. The tube of the deployment tool includes a length selected to allow the second end of the tube to extend into a portion of the lateral wellbore when the first end is releasably secured at the selected location in the vertical wellbore. | ||||||
| 251 | Method and apparatus for the remote control and monitoring of production wells | US938733 | 1997-09-26 | US5975204A | 1999-11-02 | Paulo S. Tubel; Albert A. Mullins, II; Kevin R. Jones |
| A system adapted for controlling and/or monitoring a plurality of production wells from a remote location is provided. This system is capable of controlling and/or monitoring: (1) a plurality of zones in a single production well; (2) a plurality of zones/wells in a single location (e.g., a single platform); or (3) a plurality of zones/wells located at a plurality of locations (e.g., multiple platforms). The multizone and/or multiwell control system of this invention is composed of multiple downhole electronically controlled electromechanical devices and multiple computer based surface systems operated from multiple locations. Important functions for these systems include the ability to predict the future flow profile of multiple wells and to monitor and control the fluid or gas flow from either the formation into the wellbore, or from the wellbore to the surface. The control system of this invention is also capable of receiving and transmitting data from multiple remote locations such as inside the borehole, to or from other platforms, or from a location away from any well site. | ||||||
| 252 | Methods of completing a subterranean well and associated apparatus | US109009 | 1998-07-01 | US5971074A | 1999-10-26 | James R. Longbottom; John C. Gano |
| A method of completing a subterranean well and associated apparatus therefor provide efficient operation and convenience in completions where production of fluids from a lateral wellbore and a parent wellbore is desired. In one disclosed embodiment, the invention provides an efficient method of protecting a junction of multiple wellbore portions by positioning a tubular drilling guide within the well extending through the junction. In one aspect of the present invention, the drilling guide is sealingly engaged with certain ones of the wellbore portions while drilling operations are being performed. | ||||||
| 253 | Window assembly for multiple wellbore completions | US54367 | 1998-04-02 | US5964287A | 1999-10-12 | Robert T. Brooks |
| A window assembly is provided for use at a downhole location in a first wellbore to control access to or allow isolation of a second wellbore extending from the first wellbore. The window assembly is included as an integral part of a production tubing string disposed within the first wellbore. A slot is formed in the window assembly. The window assembly is preferably installed at a downhole location aligned to an opening from the first wellbore into the second wellbore whereby well tools may move between the longitudinal bore of the window assembly and the second wellbore. Multiple guide surfaces are provided in the slot to direct movement of tools between the longitudinal bore and the window assembly and the second wellbore or vice versa. One of the guide surfaces on the slot preferably is formed with approximately the same angle at which the second wellbore intersects the first wellbore. | ||||||
| 254 | Method of completing a subterranean well | US791204 | 1997-02-13 | US5845707A | 1998-12-08 | James R. Longbottom |
| A method of completing a subterranean well and associated apparatus therefor provide efficient operation and convenience in completions where production of fluids from a lateral wellbore and a parent wellbore is desired. In one disclosed embodiment, the invention provides a method whereby a tubular member may be extended from a parent wellbore into a lateral wellbore, without the need of deflecting the tubular member off of a whipstock or other inclined surface. The tubular member may be previously deformed and initially constrained within a housing, so that as the tubular member extends outwardly from the housing, the tubular member is permitted to deflect laterally toward the lateral wellbore. | ||||||
| 255 | Multiple lateral hydrocarbon recovery system and method | US520579 | 1995-08-29 | US5785133A | 1998-07-28 | Mark J. Murray; Britt O. Braddick |
| An assembly for drilling multiple laterals (26) from a borehole and into a formation includes a whipstock assembly having a radially movable lug (82). An elongate tubular secured within the borehole has one or more non-ferrous portions (30) and a ferrous portion (52) adjacent and below a respective non-ferrous portion. A locator (54) is fixed within each ferrous portion at a desired axial spacing relative to the non-ferrous portion. According to the method of the invention, the whipstock assembly is lowered below the locator (54) and pulled upwardly to rotate the whipstock assembly to a selected azimuth within the tubular. The lug (82) on the whipstock assembly fits within the locator to axially position the whipstock face (97) within the non-ferrous portion of the tubular. A drill bit (96) engages the whipstock face and drills a window through the non-ferrous portion of the tubular and then into the formation. | ||||||
| 256 | Scoophead/diverter assembly for completing lateral wellbores | US186781 | 1994-01-26 | US5454430A | 1995-10-03 | Brian S. Kennedy; Henry J. Jordan, Jr.; Robert J. McNair; Alan B. Emerson |
| A novel scoophead/diverter assembly is presented which is installed at the juncture between a primary wellbore and a lateral branch and which allows the production tubing of each to be oriented and anchored. This scoophead/diverter assembly further provides dual seal bores for tying back to the surface with either a dual packer completion or a single tubing string completion utilizing a selective re-entry tool. The scoophead/diverter assembly comprises a scoophead, a diverter sub, two struts as connecting members between the scoophead and diverter sub and a joint of tubing communicating from the scoophead, thru the diverter sub, and to the primary wellbore. The scoophead has a large and small bore. The large bore is a receptacle for a tie back sleeve run on top of the lateral wellbore string, and the small bore is a seal bore to tie the primary wellbore back to surface. Below the scoophead, a joint of tubing is threaded to the small bore. The tubing passes through an angled smooth bore in the diverter sub which causes the tubing joint to deflect from the offset of the small bore of the scoophead back to the centerline of the scoophead, and thus the centerline of the borehole with which it is concentric. In accordance with an important feature of the scoophead, the profile in the top of the scoophead is configured so that it directs the production tubing for the lateral wellbore into the large bore of the scoophead and also orients a parallel seal assembly when tying back to the surface with a dual packer completion or a single tubing completion. The orientation is accomplished by combining a sloped profile with a slotted inclined surface around the small bore and a compound angled surface above the slot. | ||||||
| 257 | Lateral well drilling | US248972 | 1994-05-25 | US5435400A | 1995-07-25 | Michael B. Smith |
| A method for enhancing the productive capacity of a primary wellbore containing a conduit string such as casing involving removing at least a partial radial section of the casing to provide an aperture therein, setting tubing carrying a guide surface in the vicinity of the aperture and drilling a lateral wellbore at an angle to the primary wellbore using a coiled tubing conveyed drilling assembly. | ||||||
| 258 | Method for sidetracking below reduced-diameter tubulars | US81569 | 1993-06-23 | US5423387A | 1995-06-13 | Gerald D. Lynde |
| The apparatus and method of the present invention facilitate the initiation of lateral bores from a main wellbore in a completed well having a packer and a tubing string. The preferred method involves setting a plug, which may be removed, through the tubing string, followed by a layer of sand, followed by a layer of cementitious material or other material that becomes hard. The cementitious material is drilled from the end of the production tubing by means of equipment passed through the length of the cementitious material. This allows running in with another packer or anchoring device to be located within the newly created bore in the cementitious material. The sidetracking device is secured to the anchoring device and oriented. The milling then proceeds with a high-efficiency milling tool that creates a window through the cementitious material and outer casing. A milling assembly can then be used to complete the window and begin the lateral bore. If subsequent bottom production is required, the cementitious material can be underreamed down to the sand. The sand can then be washed from the initial plug that was set to support the cementitious material in the original wellbore. Multiple laterals can be accomplished in this manner by repeating the process steps. | ||||||
| 259 | Method of treating a permeable formation | US331486 | 1989-03-31 | US4928763A | 1990-05-29 | David O. Falk |
| A method of preventing intrusion of fluid into a horizontal well bore. A quantity of liquid composition capable of gelling and containing a breaker is introduced into a horizontal well bore up to a point corresponding to the bottom of the intrusion zone. After the liquid composition gels into a temporary gel, a second liquid composition capable of gelling into a permanent gel is introduced into the zone to shut off fluid flow from the zone. The temporary gel prevents flow of the permanent gel into the horizontal well bore. Thereafter the breaker in the temporary gel causes the gel to revert to a liquid, which is removed from the horizontal well bore upon production of the well. | ||||||
| 260 | System and method for providing multiple wells from a single wellbore | US101515 | 1987-09-28 | US4807704A | 1989-02-28 | Frank H. Hsu; James A. Dech |
| Multiple wellbores may be extended from a common, generally vertical wellbore and completed for conduction of fluids between said common wellbore and each of said wells by drilling the common wellbore, inserting a seal bore into the common wellbore below the junction of a deviated well with said common wellbore, inserting a whipstock and then drilling the deviated well. The whipstock is removed and a guide member is inserted into the common wellbore and secured to the anchor member. A dual packer is inserted in the common wellbore above the junction of the deviated well and is connected to the guide member to provide a slow passage into the wellbore located below the junction. A second tubing guide connector member is inserted into the common wellbore with a tubing string extending downwardly therefrom. The tubing string is passed through the dual packer and into the deviated well and the second guide member is latched to the dual packer to provide dual flow paths from each of the separate wellbores into the common wellbore or to the surface. The second guide member includes separate configurations for the respective flow passages to permit insertion of tubing strings and separate guide heads into selected wellbores for various well operations. | ||||||
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