Patents
Sitemap › C09 - Dyes; Paints; Polishes; Natural resins; Adhesives; Compositions not otherwise provided for; Applications of materials not otherwise provided for › C09K - Materials for applications not otherwise provided for; Applications of materials not otherwise provided for › C09K 8 - Compositions for drilling of boreholes or wells; Compositions for treating boreholes or wells, e.g. for completion or for remedial operations
Patents for C09K 8 - Compositions for drilling of boreholes or wells; Compositions for treating boreholes or wells, e.g. for completion or for remedial operations (31,745)
11/1998
11/05/1998CA2285994A1 Adhesive composition
11/04/1998EP0875660A2 Process to enhance removal of adhering solids from the surface of wellbores and sand control devices therein
11/04/1998EP0875658A2 Water-based compositions for sealing subterranean zones
11/04/1998EP0875657A2 Method of sealing subterranean zone
11/04/1998EP0874878A1 High density viscosified aqueous compositions
11/03/1998US5832205 Memory controller for a microprocessor for detecting a failure of speculation on the physical nature of a component being addressed
11/03/1998US5830967 Process for producing an oil and water adsorbent polymer capable of entrapping solid particles and liquids and the product thereof
11/03/1998US5830960 Polymerizing polyunsaturated monomer in silicone solvent
11/03/1998US5830831 Surfactant blends for well operations
11/03/1998US5830830 Oleophilic esters or alcohols
11/03/1998US5829527 Compositions and applications thereof of water-soluble copolymers comprising an ampholytic imidazolium inner salt
10/1998
10/29/1998WO1998048144A1 Process for improving the petroleum output of a petroleum-bearing layer
10/28/1998EP0874067A2 Apparatus and method for removing metal or mineral contaminants, especially for oil drilling equipments
10/28/1998EP0873379A1 Drilling, completion, and workover fluid comprising ground peanut hulls
10/27/1998US5827804 Hydrating galactomannan gelling agent in water, mixing it with buffering and crosslinking agents selected from boric acid or boron compounds, alkylamine and alkanolamine, feeding the gelled fluid in wells, crosslinking to pressure fracture
10/27/1998US5827803 A hydrocarbon mixture having high density, low viscosity matching the target fluid for treating oil and gas wells
10/27/1998US5827433 Adding quick-killing microbiocide to water systems used in crude oil production, then intermittent addition of controller biocides to suppress bacterial growth
10/27/1998US5826669 Adding resilent graphitic carbon particles larger than +200 mesh; plugs subterranean formations; wear resistance, friction resistance, nontoxic, noncaking
10/22/1998WO1998046542A1 Cementitious compositions and methods for use in subterranean wells
10/21/1998EP0871685A1 Preparation of hydrocarbon gels from ferric sources, polycarboxylic acid compounds, and optional amines, in combination with phosphate esters
10/20/1998US5824160 Dewaxing conduits with emulsions by fluidization paraffin deposits
10/15/1998WO1998045573A1 Controlled gel breaker
10/15/1998WO1998045218A2 Method for producing sulfate cement or sulfate cement aggregates
10/15/1998CA2257643A1 Method for producing sulfate cement or sulfate cement aggregates
10/14/1998CN1196078A 钻井液 Drilling
10/13/1998US5821203 Using metal hydroxides in an aqueous, foamed, low-density drilling fluid which also contains a clay, a foaming agent and a foam-generating gas; mechanical breaking
10/13/1998US5820670 Resilient well cement compositions and methods
10/08/1998WO1998044071A1 Drilling method and system using foam - foaming composition
10/08/1998WO1998044070A1 Well servicing fluid for trenchless directional drilling
10/08/1998WO1998014690A3 Setting composition for well operations
10/08/1998DE19714166A1 Use of water-soluble and -swellable alkyl:glycoside(s)
10/08/1998CA2285309A1 Well servicing fluid for trenchless directional drilling
10/07/1998EP0869258A1 Method and composition for acidizing subterranean formations utilizing corrosion inhibitor intensifiers
10/07/1998EP0869201A2 Method for preventing metal deposition and an oil or gas well with electrically contacting means
10/07/1998EP0868469A1 Wax deposit inhibitors
10/07/1998EP0713504B1 Reaction products from olefinically unsaturated carboxylic acids and polyetherols and their use as demulsifying agents for crude oil emulsions
10/06/1998US5817898 Using a water soluble copolymer containing hydrophobic, hydrophilic units
10/06/1998US5817613 Cleaning hard surfaces
10/06/1998US5816323 Permeability reduction in a hydrocarbon-bearing formation using a stabilized polymer gel
10/01/1998WO1998042795A1 Fluids for use in drilling and completion operations comprising water insoluble colloidal complexes for improved rheology and filtration control
09/1998
09/30/1998EP0867495A2 Method for removing debris from a well-bore
09/30/1998EP0866842A1 Drilling fluid loss prevention and lubrication additive
09/30/1998EP0866841A1 New aqueous swellable compositions of guar gum and guar gum derivatives in oleophilic liquids and their use
09/30/1998EP0866787A1 An amino nitrile intermediate for the preparation of 2-hydroxyethyl iminodiacetic acid
09/30/1998EP0866779A1 Methods for improved rheological control in cementitious systems
09/29/1998US5813466 Delayed acid for gel breaking
09/24/1998WO1998041673A1 Sulphydryl acid and imidazoline salts as inhibitors of carbon corrosion of iron and ferrous metals
09/24/1998WO1998041594A1 Controlled hydration of starch in high density brine dispersion
09/24/1998WO1998041592A1 Reticulated bacterial cellulose as a rheological modifier for polyol fluid compositions
09/24/1998CA2283759A1 Reticulated bacterial cellulose as a rheological modifier for polyol fluid compositions
09/23/1998EP0865834A1 Improved method for the thermo-chemical dewaxing of large dimension lines
09/23/1998EP0865477A1 Use of multi-block copolymers as thermo-thickeners
09/23/1998EP0800611B1 Oil and gas field chemicals
09/23/1998CN1193656A Improved method for thermo-chemical dewaxing of large dimension lines
09/17/1998WO1998040606A1 Well treatment with particles
09/17/1998WO1998040446A1 Glycol derivatives and blends thereof as gas hydrate inhibitors in water base drilling, drill-in, and completion fluids
09/17/1998WO1998040158A1 Synergistic mixtures of alkyl phenol formaldehyde resins with oxalkylated amines as asphalt dispersing agents
09/17/1998DE19709797A1 Synergistische Mischungen von Alkylphenolformaldehydharzen mit oxalkylierten Aminen als Asphalten-Dispergatoren Synergistic mixtures of alkylphenol formaldehyde resins with alkoxylated amines as asphaltene dispersants
09/16/1998EP0864726A2 Stimulating wells in unconsolidated formations
09/16/1998EP0864725A1 Oil-based compositions for sealing subterranean zones
09/16/1998EP0864032A1 Method of treating an underground formation
09/15/1998US5808052 Use of cellulose mixed ethers as additives for earth pressure shields
09/15/1998US5807812 Controlled gel breaker
09/15/1998US5807811 Water-based drilling fluids containing phosphites as lubricating aids
09/15/1998US5807810 Functional fluids and liquid cleaning compositions and suspending media
09/15/1998US5806597 Stable breaker-crosslinker-polymer complex and method of use in completion and stimulation
09/15/1998US5806594 Portland cement, alpha plaster of peris, water, foaming and foam stabilizing agents; foaming the mixture with an inert foaming gas
09/15/1998US5806593 Method to increase sand grain coating coverage
09/15/1998US5806592 Drilling completion, and workover fluid comprising ground peanut hulls
09/13/1998CA2232051A1 Stimulating wells in unconsolidated formations
09/11/1998WO1998039549A1 Process for removing solid asphalt residues produced in the petroleum industry
09/11/1998WO1998039397A1 Methods and materials for degrading xanthan
09/11/1998CA2282322A1 Process for removing solid asphalt residues produced in the petroleum industry
09/10/1998DE19708499A1 Verfahren zur Entfernung von bei der Erdölproduktion anfallenden festen Asphaltenrückständen A method of removing waste from petroleum production solid asphaltene residues
09/09/1998EP0863161A2 Process for producing an oil and water absorbent polymer capable of entrapping solid particles and liquids and the product thereof
09/09/1998EP0863159A2 Precipitation polymerization process for producing an oil adsorbent polymer capable of entrapping solid particles and liquids and the product thereof
09/09/1998EP0862603A1 Well fluid
09/09/1998EP0638049B1 Process for preventing deposits in a structure's drainage system
09/09/1998CN1192518A Process for moving heavy crude oils with water having high content of salts
09/08/1998US5804535 Synergistic mixture comprising pregelatinized amylopectin starch crosslinked with epichlororhydrin, a biopolymer, brine containing potassium and cesium formate
09/03/1998WO1998038409A2 Mixture to increase oil layer recovery
09/02/1998EP0861120A1 Oil-free, water-soluble, hydroxyethyl cellulose, liquid, polymer dispersion
09/02/1998EP0698091B1 Process for the preparation of immunogens or diagnostic reagents, and immunogens or diagnostic reagents thereby obtainable
09/02/1998EP0672218B1 High viscosity cross-linked gelled alcohol
09/01/1998USH1749 Method for inhibiting hydrate formation
09/01/1998US5801127 Olive pulp additive in drilling operations
09/01/1998US5799734 Method of forming and using particulate slurries for well completion
09/01/1998CA2057999C Conditioning of formation for sandstone acidizing
08/1998
08/26/1998CN1191558A Non-toxic inexpensive synthetic drilling fluid
08/25/1998US5798320 Gelation additive for hydraulic fracturing fluids
08/25/1998US5798319 High stability and low metals esters based on 3,5,5-trimethyl-1-hexanol
08/25/1998US5797456 Acidizing subterranean formation with mineral acids and using ester or salts of sulfonated fatty acid as antisludge or deemulsifier agent
08/20/1998WO1998036151A1 Aphron-containing well drilling and servicing fluids
08/20/1998WO1998035918A1 Fluid loss control agents and compositions for cementing oil wells comprising said fluid loss control agent
08/19/1998EP0859125A1 Control of particulate flowback in subterranean wells
08/19/1998EP0859011A1 Process for obtaining cationic cellulose microfibrils or their soluble derivatives as well as celluloses obtained by this process
08/18/1998US5795924 Resilient well cement compositions and methods
08/18/1998US5795850 Oil and gas well operation fluid used for the solvation of waxes and asphaltenes, and method of use thereof
08/18/1998US5795764 Polypeptides
08/12/1998EP0857246A1 Means and method for the preparation of sealings in oil and gas wells
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