Patents
Sitemap › E21 - Earth or rock drilling; Mining › E21B - Earth or rock drilling; Obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells › E21B 33 - Sealing or packing boreholes or wells
Patents for E21B 33 - Sealing or packing boreholes or wells (33,564)
06/1998
06/03/1998CN2283125Y Multi-purpose self-sealing well sealer
06/03/1998CA2222321A1 Elevated electrical connector assembly
06/02/1998US5758726 Ball drop head with rotating rings
06/02/1998US5758724 Underground heat exchange system
05/1998
05/29/1998CA2217303A1 Wellhead assembly
05/28/1998WO1998022691A1 System to lower the depth equipment in hydrocarbons wells
05/28/1998WO1998022301A2 Transmission assembly
05/28/1998CA2271019A1 Transmission assembly
05/27/1998CN1182824A Method for consolidation of sand
05/26/1998US5755372 Self monitoring oil pump seal
05/26/1998US5755290 Double swab barrier and method for producing and wireline intervening in a production tree
05/26/1998US5755287 Sealing assembly for subsea wellheads
05/26/1998CA2221435A1 One-trip whipstock setting and squeezing method
05/22/1998WO1998021508A1 Uni-directional environmental barrier seal
05/22/1998WO1998021447A1 Method for accelerating production - c-i-p ii
05/22/1998WO1998021445A1 Communication conduit in a well tool
05/20/1998EP0842348A1 Inflatable tubular sleeve for tubing or obturating a well or a pipe
05/20/1998EP0728253B1 Cellulose injection system and method
05/20/1998EP0702747B1 Inflatable reinforced downhole packer
05/20/1998CN2282062Y Improved packer
05/20/1998CN2282061Y Under well packer device capable of substituting packer
05/20/1998CN2282060Y Compressed self sealed thermal packer
05/20/1998CN2282059Y Anti-theft cipher plug
05/14/1998WO1998020296A1 Stemming arrangement and method for blast holes
05/14/1998WO1998020257A1 Inverted accumulator
05/14/1998CA2270997A1 Stemming arrangement and method for blast holes
05/13/1998EP0841464A2 Bore selector for a subsea wellhead
05/13/1998EP0840834A1 Apparatus and process for drilling and completing multiple wells
05/13/1998CN2281416Y Hot collecting and self sealing joint
05/13/1998CN2281415Y Two liquid mixer for chemical blocking process
05/13/1998CA2190215A1 Oil well blow-out preventer and sealing device
05/12/1998US5749676 Method of accessing a sub sea well and a guide arrangement therefor
05/12/1998US5749608 Lateral connector for tube assembly
05/12/1998US5749585 Downhole tool sealing system with cylindrical biasing member with narrow width and wider width openings
05/12/1998US5749419 Completion apparatus and method
05/12/1998CA2210103A1 Retrievable bridge plug and retrieving tool
05/12/1998CA2088932C Rod guide assembly for rotary applications
05/07/1998WO1998019042A2 Method and apparatus to isolate a formation zone
05/06/1998EP0839964A2 Well cover
05/06/1998EP0839257A1 Lightweight intervention system
05/06/1998EP0839256A1 Lightweight intervention system for use with horizontal tree with internal ball valve
05/06/1998EP0839255A1 Safeguarded method and apparatus for fluid communication using coiled tubing, with application to drill stem testing
05/05/1998US5746274 One trip cement and gravel pack system
05/05/1998US5746273 Pitless well adapter
05/05/1998US5746249 Oil well blow-out preventer and sealing device
05/05/1998CA2219732A1 Subsurface release cementing plug apparatus and methods
04/1998
04/30/1998WO1998017937A1 Undersea hydraulic connector with equalization channel
04/30/1998WO1998017930A1 Piston and cylinder device with resilient seal
04/30/1998WO1998017893A1 Well head with control module and connection assembly
04/30/1998WO1998017892A1 Connector comprising a pair of pistons with mating surfaces
04/28/1998US5744730 Subsurface in-situ radon gas detection/penetrometer system
04/28/1998US5743336 Method for installing well tubing and an insert pump in a down-hole well
04/28/1998US5743335 Well completion system and method
04/28/1998US5743333 For positioning downhole along the tubular string in a well
04/28/1998US5743332 Integral wellhead assembly for pumping wells
04/23/1998WO1998016716A1 Continuous circulation drilling method
04/22/1998EP0837216A2 Ball drop apparatus for well
04/22/1998EP0836751A1 Thermoelectric generator
04/22/1998CN2279440Y Quick-acting anti-gushing cap for oil pipe
04/17/1998CA2218195A1 Ball drop head with rotating rings
04/16/1998WO1998015850A1 Method of obtaining improved geophysical information about earth formations
04/16/1998WO1998015712A2 Method of forming wellbores from a main wellbore
04/16/1998WO1998015711A1 Inflatable plug with anchoring means
04/16/1998CA2240001A1 Inflatable plug with anchoring means
04/15/1998EP0835982A2 Well cementing plug assembly
04/14/1998US5738173 Universal pipe and tubing injection apparatus and method
04/14/1998US5738172 Filter for fluid circuits
04/14/1998US5738171 Well cementing inflation packer tools and methods
04/09/1998WO1998014688A1 Method and multi-purpose apparatus for dispensing and circulating fluid in wellbore casing
04/09/1998WO1998014686A1 Tubing injection system for oilfield operations
04/07/1998US5735502 Hydraulically actuated blowout preventer
04/07/1998US5735350 Methods and systems for subterranean multilateral well drilling and completion
04/07/1998US5735348 Fill-up and circulating tool
04/07/1998US5735344 Tubing hanger with hydraulically energized metal annular seal with new design tubing hanger running tool
04/01/1998EP0832861A1 Cementing slurry and method of designing a formulation
03/1998
03/31/1998US5732777 Well tubing suspension and rotator system
03/31/1998US5732775 Duplex assembly for use with drill pipe
03/31/1998US5732772 Dual split tubing hanger
03/31/1998US5732771 Protective sheath for protecting and separating a plurality of insulated cable conductors for an underground well
03/30/1998CA2216750A1 Cementing slurry and method of designing a formulation
03/27/1998CA2216388A1 Sand-bearing water-soluble stick and methods of use
03/25/1998EP0831257A1 Mechanically energized sealing assembly
03/25/1998EP0830531A1 Primary and secondary seal assemblies with contacting convex surfaces
03/25/1998CN1177064A Automatic sealing pipeless submerged pump
03/25/1998CN1177053A Single liquid method combined with two liquid method for water sealing in borehole
03/24/1998US5730473 Lateral connector for tube assembly
03/24/1998US5730219 Production wells having permanent downhole formation evaluation sensors
03/19/1998WO1998010899A1 Granular particle gripping surface
03/18/1998EP0829616A1 Process for the consolidation of sand
03/18/1998EP0828921A2 Activating means for drilling apparatus
03/18/1998EP0828920A1 A simplified sealing and anchoring device for a well tool
03/18/1998CN2276554Y Expansion birdging plug
03/18/1998CA2215713A1 Pump-packing device for down-hole well arrangements
03/17/1998US5727640 For use in drilling of seep water oil/gas wells
03/17/1998US5727632 Top release retrievable bridge plug or packer and method of releasing and retrieving
03/17/1998US5727631 Coiled tubing hanger
03/13/1998CA2215087A1 Mechanically energized element
03/12/1998WO1998010168A1 Sampling device
03/12/1998WO1998009740A1 In situ deep remediation injection system & method
03/12/1998CA2264710A1 In situ deep remediation injection system & method
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