| Patent application number | Description | Published |
|---|
| 20090078414 | CHEMICALLY ENHANCED THERMAL RECOVERY OF HEAVY OIL - Described herein are methods for removing heavy oils from underground reservoirs. The methods involve the use of chemical compositions in combination with steam techniques for the efficient removal of heavy oils. | 03-26-2009 |
| 20090137429 | Temperature-Extended Enzyme Systems - Water-soluble amphoteric surfactants at low concentration thermostabilize enzymes in brine. The thermostabilized enzyme compositions can be used in a method to digest polymers at temperatures and/or salinities at which the enzyme is normally inactivated and/or coagulated without the surfactant. In oilfield applications, the composition can be used in well treatment methods including filtercake removal and polymer viscosity breaking in well treatment fluids. | 05-28-2009 |
| 20090143257 | Methods and Compositions for Controlling Water Production - A composition for treatment of a subterranean formation, which may be used for water control, is comprised of at least one of 1) a premix of an oleochemical polyol, at least one of polyisocyanate, polycyanate and polyisothiocyanate, and a blocking agent to temporarily block all or a portion of free reactive groups of said at least one of polyisocyanate, polycyanate and polyisothiocyanate. Alternatively, or in addition, the composition may be comprised of a solvent and 2) a polyurethane prepolymer formed by reacting an oleochemical polyol and at least one of polyisocyanate, polycyanate and polyisothiocyanate. A blocking agent may also be used with the polyurethane prepolymer. The composition may be used in a method of treating a subterranean formation penetrated by a wellbore by introducing the composition into the formation through the wellbore. In another embodiment, a method of treating a subterranean formation penetrated by a wellbore is carried out by forming a treatment fluid containing at least one of 1) palmitic acid or its derivatives and 2) palm oil and at least one of an hydrolyzing or oxidizing agent to facilitate formation of palmitic acid or its derivatives. The treatment fluid also includes a source of a monovalent ions. The treatment fluid is introduced into the wellbore for treatment of the subterranean formation. | 06-04-2009 |
| 20090159288 | Chemically enhanced thermal recovery of heavy oil - Described herein are methods for removing heavy oils from underground reservoirs. The methods involve the use of chemical compositions in combination with steam techniques for the efficient removal of heavy oils. | 06-25-2009 |
| 20110266000 | Movable Well Bore Cleaning Device - The invention provides a device for cleaning a wellbore, comprising a tubular section, a helical scratcher mounted thereof wherein said helical scratcher contains flexible wires characterized in that the helical scratcher is able to rotate axially to tubular section when a fluid flows axially to tubular section. Alternatively, the invention provides the method to clean a wellbore wall of a well, said method comprises the steps of: incorporating a device as previously described into the wellbore; moving the device in the well and allowing the fluid flowing axially to the wellbore wall to rotate the scratcher; removing deposit at wellbore wall; leaving a cleaned wellbore wall. | 11-03-2011 |
| 20120000649 | APPARATUS AND METHODS FOR IMPROVED CEMENT PLUG PLACEMENT - A method and apparatus for making real-time measurements of downhole properties during cement plug placement. A wired placement conduit ( | 01-05-2012 |
| 20120000650 | METHODS AND APPARATUS FOR IMPROVED CEMENT PLUG PLACEMENT - A method and apparatus for making real-time measurements of downhole properties during cement plug placement. A wired placement conduit ( | 01-05-2012 |
| 20120000655 | METHODS AND APPARATUS FOR IMPROVED CEMENT PLUG PLACEMENT - A method and apparatus for making real-time measurements of downhole properties during cement plug placement. A wired placement conduit is lowered downhole releasing a sensor package. The sensor package is capable of measuring downhole properties in real-time in the period while the cement plug sets. | 01-05-2012 |
