Did You Know...
...that power steering was invented by independent inventor Francis W. Davis? As chief engineer in the 1920s of the truck division of the Pierce Arrow Motor Car Company, he saw how hard it was to steer heavy vehicles. So that he would be able to keep the profits from his future invention, Davis left his job, rented a small engineering shop in Waltham, Mass., and developed a hydraulic power steering system that led to power steering.
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| Number | Title | Issue Date |
| 8157010 | Treatment of subterranean formations A method of preparing and using a subterranean formation stabilization agent. The stabilization agent includes a guanidyl copolymer and may be admixed with a fracturing fluid and optionally brine. The stabilization agent is effective in preventing and/or reducing, f... | 04/17/2012 |
| 8136595 | Methods for controlling particulate flowback and migration in a subterranean formation Methods useful in treating subterranean formations to control particulate migration with a tacky-consolidate treatment fluid comprising a resin and a tackifying compound. One method comprises the steps of providing a portion of a subterranean formation comprising un... | 03/20/2012 |
| 8127847 | Multi-position valves for fracturing and sand control and associated completion methods A completion tubular is placed in position adjacent the zone or zones to be fractured and produced. It features preferably sliding sleeve valves one series of which can be put in the wide open position after run in for gravel packing and fracturing zones one at a ti... | 03/06/2012 |
| 7934557 | Methods of completing wells for controlling water and particulate production Disclosed embodiments relate to methods of completing wells in subterranean formations. An exemplary embodiment comprises forming an artificial barrier to water flow, wherein the artificial barrier is located at or above a hydrocarbon-water interface between a water... | 05/03/2011 |
| 7832479 | Polymeric extenders for flexible cement A flexible cement stable at high temperatures contains an extender that is a finely ground polyetheretherketone. The cement retains its flexibility for long times at high temperatures, for example those used for steam assisted gravity drainage of heavy oil formation... | 11/16/2010 |
| 7762329 | Methods for servicing well bores with hardenable resin compositions Methods for servicing well bores with hardenable resin compositions are provided. In one embodiment, a method of servicing a well bore includes providing a hydrophobic well bore servicing composition comprising a liquid hardenable resin, a hardening agent, and a wei... | 07/27/2010 |
| 7748455 | Surfaced mixed epoxy method for primary cementing of a well A two part epoxy resin system is surface mixed in a method of primary cementing a well. This surface mixed epoxy resin is then placed in the annulus of the well. Finally, the mixture in situ forms a hard impermeable mass. ... | 07/06/2010 |
| 7712531 | Methods for controlling particulate migration Methods are provided for stabilizing a portion of a subterranean formation or reducing the production of particulates from a portion of a subterranean formation comprising contacting the portion of the subterranean formation with a pre-flush fluid; contacting the po... | 05/11/2010 |
| 7637320 | Differential filters for stopping water during oil production A differential filter includes a swellable polymer that swells after contacting water such that permeability of the differential filter is reduced. A method of controlling water production in a well includes deploying a differential filter downhole; and performing a... | 12/29/2009 |
| 7559370 | Restricting fluid passage and novel materials therefor Water problems in the production of oil or gas from subterranean formations is addressed by providing a method of restricting passage of a fluid from a first location to a second location in a subterranean formation by injecting into the formation a formulation comp... | 07/14/2009 |
| 7527099 | System for sealing a space in a wellbore A system is provided for sealing a space in a wellbore formed in an earth formation. The system has a swelleable body arranged in the wellbore in a manner so as to seal the space upon swelling of the swelleable body, the swelleable body being susceptible of being in... | 05/05/2009 |
| 7500521 | Methods of enhancing uniform placement of a resin in a subterranean formation Methods of enhancing uniform placement of a resin in a subterranean formation comprising: introducing a preflush fluid comprising an oil-soluble diverting agent into a portion of a subterranean formation; introducing a resin and an aqueous soluble diverting agent in... | 03/10/2009 |
| 7493957 | Methods for controlling water and sand production in subterranean wells Methods for stabilizing unconsolidated or weakly consolidated portions of a subterranean formation and controlling the production of water in those portions include introducing a consolidating agent into the subterranean formation so as to transform a portion of the... | 02/24/2009 |
| 7448451 | Methods for controlling migration of particulates in a subterranean formation Methods of controlling particulate migration in a portion of a subterranean formation comprising placing a pre-flush fluid into the portion of the subterranean formation; and then, placing a low-viscosity adhesive substance diluted with an aqueous dissolvable solven... | 11/11/2008 |
| 7441599 | Controlling the pressure within an annular volume of a wellbore A process is described for replacing at least a portion of the liquid within the annular volume of a casing system within a wellbore with a second liquid. The second liquid is preselected to provide a measure of control of the pressure within the annular volume as t... | 10/28/2008 |
| 7413010 | Remediation of subterranean formations using vibrational waves and consolidating agents Methods of remediating a subterranean formation comprising directing vibrational waves at a portion of the subterranean formation containing fines; allowing the vibrational waves to displace at least a portion of the fines; and introducing a consolidating agent into... | 08/19/2008 |
| 7407010 | Methods of coating particulates Methods comprising: providing at least a plurality of liquid hardenable resin coated particulates that have been at least partially coated with a liquid hardenable resin component; providing at least a plurality of liquid hardening agent coated particulates that hav... | 08/05/2008 |
| 7401649 | Methods for controlling particulate migration Methods are provided for stabilizing a portion of a subterranean formation or reducing the production of particulates from a portion of a subterranean formation comprising contacting the portion of the subterranean formation with a pre-flush fluid; contacting the po... | 07/22/2008 |
| 7398825 | Methods of controlling sand and water production in subterranean zones Methods for stabilizing portions of a subterranean formation and controlling the production of water from those subterranean formations. In one embodiment, the methods of the present invention comprise: providing a consolidating agent; introducing the consolidating ... | 07/15/2008 |
| 7388045 | Cement compositions comprising lignite grafted fluid loss control additives Novel well cement compositions are provided. Exemplary embodiments of the well cement compositions comprise water, a cement and a fluid loss control additive comprising a graft polymer. The graft polymer comprises a backbone comprising a lignite. The graft polymer f... | 06/17/2008 |
| 7387161 | Determination of well shut-in time for curing resin-coated proppant particles A laboratory test method employs maximum acoustic wave velocity to determine cure time of a sample of curable resin-coated proppant (CRCP) that are packed in a pressurized chamber to simulate conditions in a reservoir rock formation during fracturing in which the CR... | 06/17/2008 |
| 7384894 | Cement compositions with improved fluid loss characteristics and methods of cementing in surface and subterranean applications Improved fluid loss control additives for use in cement compositions are provided. The improved fluid loss control additives and cement compositions are suitable for use in surface and subterranean applications. The improved fluid loss control additives and cement c... | 06/10/2008 |
| 7384893 | Cement compositions with improved fluid loss characteristics and methods of cementing in surface and subterranean applications Cement compositions comprising an improved fluid loss control additive are provided. The cement compositions are suitable for use in surface and subterranean applications. The cement compositions may be particularly useful for subterranean well completion and remedi... | 06/10/2008 |
| 7363978 | Methods of using reactive surfactants in subterranean operations Novel uses of reactive surfactants in treating subterranean formations and/or proppant particulates are provided. In one embodiment, the present invention provides a method comprising: providing a treatment fluid that comprises a base fluid and a reactive surfactant... | 04/29/2008 |
| 7363976 | Well remediation using downhole slurry A method of remediation of a well is provided utilizing a cement and cement activator plugging composition, in which one of the components is first placed in the well at the desired remediation depth. Next, the other component is placed in the well above the first p... | 04/29/2008 |
| 7357188 | Mono-diameter wellbore casing A mono-diameter wellbore casing is formed by radially expanding a first tubular liner off of a mandrel into contact with a second tubular liner. The first and second tubular liners are positioned within the wellbore in an overlapping relationship. The overlapping po... | 04/15/2008 |
| 7357834 | Cement composition for use with a formate-based drilling fluid comprising an alkaline buffering agent A cement slurry comprising a base for reducing the impact of an alkaline solution may be displaced into a wellbore and allowed to set. The base may comprise a metal carbonate that is soluble in water such as potassium carbonate. The cement slurry may further include... | 04/15/2008 |
| 7357189 | Seal There is disclosed an expandable seal for sealing at least part of a wall of a well borehole, an expandable seal assembly comprising at least two such expandable seals, and a method of sealing at least part of a well borehole using such a seal. In one embodiment, th... | 04/15/2008 |
| 7353876 | Self-degrading cement compositions and methods of using self-degrading cement compositions in subterranean formations Methods of stimulating subterranean formations are provided. More particularly, methods of fracturing subterranean formations using a fracturing fluid comprising a self-degrading cement composition are provided. An example of a method is a method of treating a subte... | 04/08/2008 |
| 7353879 | Biodegradable downhole tools A disposable downhole tool or a component thereof comprises an effective amount of biodegradable material such that the tool or the component thereof desirably decomposes when exposed to a wellbore environment. In an embodiment, the biodegradable material comprises ... | 04/08/2008 |
| 7351680 | High performance water-based mud system A drilling fluid or mud additive having several components, including leonardite (humic acid); potassium acetate; partially hydrolyzed polyacrylamide (PHPA); polyanionic cellulose polymer (PAC); sulfonated asphalt; sulfoalkylated tannin; polystyrene maleic anhydride... | 04/01/2008 |
| 7350571 | Methods of preparing and using coated particulates The present invention involves methods of preparing coated particulates and using such coated particulates in subterranean applications such as production enhancement and sand control. One embodiment of the present invention provides a method of preparing coated par... | 04/01/2008 |
| 7350574 | Methods of retarding the setting of a cement composition using biodegradable monomers Methods of retarding the setting of a cement composition comprise including one or more secondary amines substituted with a carboxyl group or salts thereof (e.g., 3-hydroxy N,N′-iminodisuccinic acid) in the cement composition. The inclusion of such materials in ce... | 04/01/2008 |
| 7351249 | Systems, methods, and compositions for achieving closure of suture sites Systems and methods employ functional instruments to close incisions and wounds using a suture knot in combination with a biocompatible material composition. The systems and methods are well suited for use, for example, at a vascular puncture site following a vascul... | 04/01/2008 |
| 7350573 | Servicing a wellbore with wellbore fluids comprising perlite Wellbore fluids comprising an expanded and ground perlite and methods of using the same are disclosed. In one embodiment, the methods include a method of cementing comprising preparing or placing a cement composition comprising cement, water, and an expanded and gro... | 04/01/2008 |
| 7350572 | Methods for controlling fluid loss A method of treatment of subterranean formations in which leakoff through natural fractures is controlled through the use of fibers. The method involves pumping a mixture of a formation treatment fluid and a fiber into the formation for matrix stimulation, fracture ... | 04/01/2008 |
| 7347263 | Networked polymeric gels and use of such polymeric gels in hydrocarbon recovery A composition includes water having a salinity of at least 1 ppt, at least one hydrophilic polymer containing primary (—NH2) and/or secondary (—NHR) amine groups and at least one saccharide containing a reducible function. A method of changing the per... | 03/25/2008 |
| 7347264 | Methods and compositions for well completion in steam breakthrough wells Methods of steam flooding for stimulating hydrocarbon production are provided. In general, the methods comprise the steps of: (A) injecting a mutual solvent preflush fluid capable of dissolving oil into the near-wellbore region of at least a portion of a wellbore; (... | 03/25/2008 |
| 7343973 | Methods of stabilizing surfaces of subterranean formations A method of treating a subterranean formation or of stabilizing a surface within a subterranean fracture comprising: providing a treatment fluid comprising lightweight proppant at least partially coated with an adhesive substance; introducing the treatment fluid int... | 03/18/2008 |
| 7343974 | Method and apparatus for performing chemical treatments of exposed geological formations A method for strengthening a wellbore with an exposed geological formation, the method including: determining or estimating material properties of the exposed geological formation; determining changes necessary in material properties of the exposed geologic formatio... | 03/18/2008 |
