| Patents for E21B 43 - Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells (64,186) |
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| 03/11/2004 | US20040045616 Tubular liner for wellbore casing |
| 03/11/2004 | US20040045350 Chemical sensor for wellbore applications |
| 03/10/2004 | EP1395732A1 In-situ casting of well equipment |
| 03/10/2004 | EP0938622B1 Method for accelerating production - c-i-p ii |
| 03/10/2004 | CN2606200Y Cup-shaped piston oil well pump |
| 03/10/2004 | CN1480664A Automatic reversal speed reducer with electromagnetical clutch for oil pumping unit |
| 03/10/2004 | CN1480629A Technique of feeding flow in static pressure by injection pump of viscoelastic fluid |
| 03/10/2004 | CN1480628A Method for releasing oil field from blockage caused by high molecular polymer |
| 03/10/2004 | CN1480627A Technique for dissecting depth of sludge containing oil in injection well |
| 03/10/2004 | CN1480626A Walking beam type pumping unit driven by linear motor |
| 03/10/2004 | CN1141491C Stratum-changing production method and technical pipe column |
| 03/10/2004 | CN1141352C Clay-free biodegradable wellbore fluid and method for using said fluid |
| 03/09/2004 | US6703352 For use in fracturing a subterranean formation; as a drift control agent for agricultural formulations; detergents |
| 03/09/2004 | US6702204 Cavitating jet |
| 03/09/2004 | US6702039 Perforating gun carriers and their methods of manufacture |
| 03/09/2004 | US6702030 Procedures and equipment for profiling and jointing of pipes |
| 03/09/2004 | US6702029 Tubing anchor |
| 03/09/2004 | US6702028 Apparatus and method for producing oil and gas |
| 03/09/2004 | US6702027 Gas dissipation chamber for through tubing conveyed ESP pumping systems |
| 03/09/2004 | US6702020 Crossover Tool |
| 03/09/2004 | US6702019 Apparatus and method for progressively treating an interval of a wellbore |
| 03/09/2004 | US6702018 Apparatus and method for gravel packing an interval of a wellbore |
| 03/09/2004 | US6702016 In situ thermal processing of a hydrocarbon containing formation with heat sources located at an edge of a formation layer |
| 03/09/2004 | US6702013 Multiport gate valve assembly for flow completion system |
| 03/09/2004 | US6702011 Combined nitrogen treatment system and coiled tubing system in one tractor/trailer apparatus |
| 03/04/2004 | WO2004018840A1 Use of distributed temperature sensors during wellbore treatments |
| 03/04/2004 | WO2004018839A2 Fluid flow control device and method for use of same |
| 03/04/2004 | WO2004018838A1 Gas lift mandrel |
| 03/04/2004 | WO2004018837A1 A flow control device for an injection pipe string |
| 03/04/2004 | WO2004018836A1 Self-conforming well screen |
| 03/04/2004 | WO2004018835A2 System and method for subterranean access |
| 03/04/2004 | WO2004018824A2 Magnetic impulse applied sleeve method of forming a wellbore casing |
| 03/04/2004 | WO2004018823A2 Interposed joint sealing layer method of forming a wellbore casing |
| 03/04/2004 | WO2004003335A3 System and method to separate particles from water |
| 03/04/2004 | WO2003102346A3 Downhole desalination of aquifer water |
| 03/04/2004 | WO2003093638A3 Tubing anchor |
| 03/04/2004 | WO2003093637A3 Tubing anchor |
| 03/04/2004 | US20040043501 Monitoring reservoir conditions, estimating and quantifying concentrations of oil and gas in earth formations and determining operating and physical conditions of down hole tools |
| 03/04/2004 | US20040041423 Clamp and method for handling objects |
| 03/04/2004 | US20040041224 Photoconductor-on-active-pixel (POAP) sensor utilizing a multi-layered radiation absorbing structure |
| 03/04/2004 | US20040041120 Sleeve valve for controlling fluid flow between a hydrocarbon reservoir and tubing in a well and method for the assembly of a sleeve valve |
| 03/04/2004 | US20040040723 Run in cover for downhole expandable screen |
| 03/04/2004 | US20040040721 Auto reversing expanding roller system |
| 03/04/2004 | US20040040717 Method for upward growth of a hydraulic fracture along a well bore sandpacked annulus |
| 03/04/2004 | US20040040716 Active heating of thermally insulated flowlines |
| 03/04/2004 | US20040040715 In situ production of a blending agent from a hydrocarbon containing formation |
| 03/04/2004 | US20040040708 Method of treating subterranean formations with porous ceramic particulate materials |
| 03/04/2004 | US20040040707 Well treatment apparatus and method |
| 03/04/2004 | US20040040703 Downhole expandable bore liner-filter |
| 03/04/2004 | DE10161607B4 Verfahren und Einrichtung zur Bestimmung und Beeinflussung der Rohölzusammensetzung bei der Rohölförderung Method and apparatus for determining and influencing the crude oil composition in crude oil production |
| 03/03/2004 | EP1392955A1 Borehole production boosting system |
| 03/03/2004 | EP1392953A1 Line hanger, running tool and method |
| 03/03/2004 | CN1479025A Balanced torsion gearbox |
| 03/02/2004 | US6698915 Manifold for mixing device |
| 03/02/2004 | US6698800 Remote connector including support structure |
| 03/02/2004 | US6698521 System and method for removing solid particulates from a pumped wellbore fluid |
| 03/02/2004 | US6698519 Methods of forming permeable sand screens in well bores |
| 03/02/2004 | US6698518 Apparatus and methods for use of a wellscreen in a wellbore |
| 03/02/2004 | US6698517 Apparatus, methods, and applications for expanding tubulars in a wellbore |
| 03/02/2004 | US6698515 In situ thermal processing of a coal formation using a relatively slow heating rate |
| 03/02/2004 | US6698513 Apparatus for use in cementing an inner pipe within an outer pipe within a wellbore |
| 03/02/2004 | US6698450 Discharge valve |
| 02/26/2004 | WO2004016907A1 A pipe separator for the separation of fluids, particularly oil, gas and water |
| 02/26/2004 | WO2004016905A1 Expandable tubular element for use in a wellbore |
| 02/26/2004 | WO2004016335A2 A gas-liquid separator positionable down hole in a well bore |
| 02/26/2004 | WO2004001182A3 Internal support apparatus for downhole tubular structures |
| 02/26/2004 | WO2004001179A3 Method for selectively treating two producing intervals in a single trip |
| 02/26/2004 | WO2003091539A3 Sand and particle separator for fluid pumping systems |
| 02/26/2004 | WO2003089161A3 Protective sleeve for threaded connections for expandable liner hanger |
| 02/26/2004 | WO2003067025A3 Interpretation and design of hydraulic fracturing treatments |
| 02/26/2004 | WO2003036011A3 Hydraulic pump for extracting fluids from wells |
| 02/26/2004 | WO2003006778A3 Drilling system and method for controlling equivalent circulating density during drilling of wellbores |
| 02/26/2004 | US20040035591 Fluid flow control device and method for use of same |
| 02/26/2004 | US20040035590 Self -conforming screen |
| 02/26/2004 | US20040035585 Well pump capsule |
| 02/26/2004 | US20040035583 Wave seal to resist extrusion during equalization |
| 02/26/2004 | US20040035582 System and method for subterranean access |
| 02/26/2004 | US20040035579 Method and gravel packing open holes above fracturing pressure |
| 02/26/2004 | US20040035578 Fluid flow control device and method for use of same |
| 02/26/2004 | US20040035577 Downhole flow meter |
| 02/26/2004 | US20040035576 Steel pipe for embedding-expanding, and method of embedding-expanding oil well steel pipe |
| 02/26/2004 | US20040035575 Gas lift mandrel |
| 02/26/2004 | US20040035571 Water, oil and gas well recovery system |
| 02/26/2004 | CA2494965A1 Expandable tubular element for use in a wellbore |
| 02/25/2004 | EP1390603A1 Arrangement for and method of restricting the inflow of formation water to a well |
| 02/25/2004 | CN2604522Y Stainless steel plate mesh corrugated bellows type sandproof screen tube |
| 02/25/2004 | CN2604519Y Anti-going into oil ball base |
| 02/25/2004 | CN2604518Y Washable well hydraulic compressing packer |
| 02/25/2004 | CN1139516C Working ship |
| 02/24/2004 | USRE38434 Closed oil liquid ring gas compression system with a suction injection port |
| 02/24/2004 | US6695067 Wellbore isolation technique |
| 02/24/2004 | US6695065 Tubing expansion |
| 02/24/2004 | US6695063 Expansion assembly for a tubular expander tool, and method of tubular expansion |
| 02/24/2004 | US6695060 Downhole pumping system |
| 02/24/2004 | US6695057 Fracturing port collar for wellbore pack-off system, and method for using same |
| 02/24/2004 | US6695054 Expandable sand screen and methods for use |
| 02/24/2004 | US6695052 Technique for sensing flow related parameters when using an electric submersible pumping system to produce a desired fluid |
| 02/24/2004 | US6695012 Lubricant coating for expandable tubular members |
| 02/24/2004 | CA2268104C Method of obtaining improved geophysical information about earth formations |
| 02/21/2004 | CA2437635A1 Method and apparatus for wellbore fluid treatment |