| Patents for E21B 33 - Sealing or packing boreholes or wells (33,564) |
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| 04/24/2007 | CA2253687C Apparatus and methods for stimulating a subterranean well |
| 04/19/2007 | WO2005081780A3 Electric-hydraulic power unit |
| 04/19/2007 | US20070088505 Method and apparatus for dynamic application management in sub-sea well installations |
| 04/19/2007 | US20070084607 Shear activated safety valve system |
| 04/18/2007 | EP1774134A1 Cementing methods and systems for initiating fluid flow with reduced pumping pressure |
| 04/18/2007 | EP1436482B1 High power umbilicals for subterranean electric drilling machines and remotely operated vehicles |
| 04/18/2007 | CN2890326Y Internal boosting device for well cementing pipe |
| 04/18/2007 | CN2890325Y 喷射混合器 Jet mixer |
| 04/18/2007 | CN2890324Y Mounting and fixing tool for large-size wellhead blowout device |
| 04/18/2007 | CN2890323Y Anti-theft anti-blowout pressable well device for oil well |
| 04/18/2007 | CN2890314Y Rotational flow guide generation device for use in casing operation |
| 04/18/2007 | CN1950585A Deploying an assembly into a well |
| 04/17/2007 | US7205264 Well treatment method using fluid containing lactic acid or salt thereof |
| 04/17/2007 | US7204311 Placing a pre-pad fluid into a portion of a subterranean formation comprising unconsolidated particulates, placing a fracturing fluid into the portion of the subterranean formation at a pressure sufficient to create or extend at least one fracture therein; activating the aqueous tackifler compound |
| 04/17/2007 | US7204310 Methods of use settable drilling fluids comprising cement kiln dust |
| 04/17/2007 | US7204307 Methods of using settable compositions comprising cement kiln dust |
| 04/17/2007 | US7204305 System and method for installing a liner in a borehole |
| 04/17/2007 | US7204304 Removable surface pack-off device for reverse cementing applications |
| 04/12/2007 | WO2007041534A1 Oil-based insulating packer fluid |
| 04/12/2007 | WO2007041420A2 In-situ solidification of invert emulsion fluids to form gas tight annular barrier |
| 04/12/2007 | WO2007038878A1 Burst plug for a downhole fluid passage |
| 04/12/2007 | WO2006044763B1 Subsea junction plate assembly running tool and method of installation |
| 04/12/2007 | WO2004111380A3 Wellhead assembly with pressure actuated seal assembly and running tool |
| 04/12/2007 | WO2004083595A3 Substantially neutrally buoyant and positively buoyant electrically heated flowlines for production of subsea hydrocarbons |
| 04/12/2007 | US20070079969 Segmented steel tube bundle termination assembly |
| 04/12/2007 | CA2620016A1 Methods, systems and apparatus for coiled tubing testing |
| 04/11/2007 | EP1771638A1 Blowout preventer, ram actuator and method of actuating a ram |
| 04/11/2007 | EP1478825B1 Tubing hanger with ball valve in the annulus bore |
| 04/11/2007 | CN2888063Y 一体化桥塞挤水泥工具 Integrated bridge plug cementing tool |
| 04/11/2007 | CN2888062Y Sand-stick proof packer |
| 04/11/2007 | CN2888061Y 注水封隔器 Injection packer |
| 04/11/2007 | CN1944953A Method and apparatus for determining position in a pipe |
| 04/11/2007 | CN1309935C Tubular system located in shaft |
| 04/11/2007 | CN1309798C Follow-drilling plugging agent and its preparation method and use |
| 04/10/2007 | US7201229 Tree mounted well flow interface device |
| 04/10/2007 | US7201226 Downhole measurement system and method |
| 04/10/2007 | US7201221 Wellbores utilizing fiber optic-based sensors and operating devices |
| 04/10/2007 | CA2536468C Expandable connector for borehole tubes |
| 04/10/2007 | CA2363811C Downhole drilling assembly with independent jet pump |
| 04/07/2007 | CA2562819A1 Methods and systems for delivering lost circulation material into drilling pits |
| 04/05/2007 | US20070074876 Apparatus for facilitating the connection of tubulars using a top drive |
| 04/05/2007 | US20070074870 Dual-type plug for wellhead |
| 04/05/2007 | US20070074869 In-situ solidification of invert emulsion fluids to form gas tight annular barrier |
| 04/04/2007 | EP1769133A1 Methods of reducing the impact of a formate-based drilling fluid comprising an alkaline buffering agent on a cement slurry |
| 04/04/2007 | EP1769132A2 Cement compositions comprising high aspect ratio materials and methods of use in subterranean formations |
| 04/04/2007 | CN2886078Y Blowout-prevention pipe support without the need of manually lifting and reclaiming instruments for use in water injection well testing |
| 04/04/2007 | CN2886067Y Flushing packer |
| 04/04/2007 | CN2886066Y Sealing device for hollow water distributor |
| 04/03/2007 | US7199086 Cement kiln dust, water and fly ash, hydrated lime an oil external emulsion of oil, water, CKD, an emulsifying surfactant, and a set retarding additive; subterranean operations |
| 04/03/2007 | US7198110 Two slip retrievable packer for extreme duty |
| 04/03/2007 | US7198107 In-situ method of producing oil shale and gas (methane) hydrates, on-shore and off-shore |
| 04/03/2007 | US7198104 Introducing a mixture of a hydraulic cement and an invert emulsion of oil, water, and an emulsifying surfactant (e.g., tallow diamine substituted with 3 moles of ethylene oxide) into the formation; stable for up to 3 weeks and easily displaced after being static in the well bore for more than a week |
| 04/03/2007 | US7198100 Apparatus for expanding a tubular member |
| 04/03/2007 | US7198098 Mechanical connection system |
| 04/03/2007 | CA2346880C Drilling method |
| 03/29/2007 | WO2007035745A2 Well treatment device, method, and system |
| 03/29/2007 | WO2007034139A1 Apparatus for autofill deactivation of float equipment and method of reverse cementing |
| 03/29/2007 | WO2006033906B1 A subsea wellhead arrangement for hydraulically pumping a well |
| 03/29/2007 | WO2005111403A3 Wedge seal |
| 03/29/2007 | US20070068703 Method for drilling and cementing a well |
| 03/29/2007 | US20070068675 Method for drilling and completing wells |
| 03/29/2007 | US20070068671 Expandable wellbore assembly |
| 03/29/2007 | CA2623100A1 Well treatment device, method, and system |
| 03/28/2007 | EP1766182A1 Blowout preventer |
| 03/28/2007 | CN2883664Y Inner-tube floating hook |
| 03/28/2007 | CN2883663Y Inner-tube filling inserter |
| 03/28/2007 | CN2883662Y Casing packer for checking channeling |
| 03/28/2007 | CN2883661Y Wellhead blowout preventing and antitheft appts. |
| 03/28/2007 | CN2883660Y Packing set |
| 03/28/2007 | CN1936269A Three-layer water-searching pipe column for oil-pumping well in oil field and water-searching method |
| 03/28/2007 | CN1307362C Method for hot changing master control valve for wellhead device and blanking plug therefor |
| 03/27/2007 | US7195224 Blowout preventer and locking mechanism |
| 03/27/2007 | US7195061 Apparatus for expanding a tubular member |
| 03/27/2007 | CA2333132C Supporting materials in a borehole |
| 03/22/2007 | WO2007031723A2 Packer |
| 03/22/2007 | WO2007016313A3 Ball dropping tool method and apparatus |
| 03/22/2007 | WO2006119037A3 Expandable packer with mounted exterior slips and seal |
| 03/22/2007 | WO2006113338A3 Encapsulated back-up system for use with seal system |
| 03/22/2007 | WO2006074042A3 Well production optimizing system |
| 03/22/2007 | US20070062710 Seal Assembly For Sealingly Engaging A Packer |
| 03/22/2007 | US20070062709 Closure device for closed receptacles of plastic film |
| 03/22/2007 | US20070062708 Modular well tool system |
| 03/22/2007 | US20070062700 Apparatus for autofill deactivation of float equipment and method of reverse cementing |
| 03/22/2007 | US20070062697 Process for the selective controlled reduction of the relative water permeability in high permeability oil-bearing subterranean formations |
| 03/22/2007 | US20070062691 Methods of formulating a cement composition |
| 03/22/2007 | US20070062689 Downhole trigger apparatus |
| 03/21/2007 | CN2881079Y Blowout prevention oil extraction tree |
| 03/21/2007 | CN2881078Y Self-locking rubber plug |
| 03/21/2007 | CN2881077Y Blind plate joint for full-bore completion |
| 03/21/2007 | CN2881076Y Underwell packet apparatus |
| 03/21/2007 | CN2881075Y Hydraulic pipeline joint of underwell shut-in device |
| 03/21/2007 | CN2881074Y Filling tool of pipe external packer |
| 03/21/2007 | CN2881073Y Single well four-layer pipe bittern extraction well epening device |
| 03/21/2007 | CN2881072Y Anti-theft device of oil well gate |
| 03/21/2007 | CA2559850A1 Process for producing synthesis gas by steam reformation in a reactor-exchanger |
| 03/20/2007 | US7193414 Downhole NMR processing |
| 03/20/2007 | US7191844 Inflate control system for inflatable straddle stimulation tool |
| 03/20/2007 | US7191834 Foamed cement compositions and associated methods of use |
| 03/20/2007 | US7191828 Hydraulically set concentric packer with multiple umbilical bypass through the piston |
| 03/20/2007 | CA2537867C Apparatus and methods for separating and joining tubulars in a wellbore |