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| Number | Title | Issue Date |
| 7941307 | Method for calibrating a model of in-situ formation stress distribution A method for producing a substantially calibrated numerical model, which can be used for calculating a stress on any point in a formation, accounts for a formation's geologic history using at least one virtual formation condition to effectively “create” the pres... | 05/10/2011 |
| 7938184 | Wellbore method and apparatus for completion, production and injection A method and system associated with the production of hydrocarbons comprising a joint assembly comprising a main body portion having primary and secondary fluid flow paths, wherein the main body portion is attached to a load sleeve assembly at one end and a torque s... | 05/10/2011 |
| 7897267 | Apparatus and methods of improving riser weld fatigue A tubular assembly comprising a first iron based tubular having a first non-cladded inner surface; and a second iron based tubular having a second non-cladded inner surface, wherein the first tubular is connected to the second tubular using a non-iron based bonding ... | 03/01/2011 |
| 7896105 | Method of drilling and production hydrocarbons from subsurface formations A method associated with the production of hydrocarbons. In one embodiment, a method for drilling a well is described. The method includes identifying a field having hydrocarbons. Then, one or more wells are drilled to a subsurface location in the field to provide f... | 03/01/2011 |
| 7891420 | Wellbore apparatus and method for completion, production and injection A method and apparatus associated with the production of hydrocarbons is disclosed. In one embodiment, an apparatus includes a tubular member having a central opening within an internal portion of the tubular member, wherein the central opening allows hydrocarbons t... | 02/22/2011 |
| 7870898 | Well flow control systems and methods Flow control systems and methods for use in hydrocarbon well operations include a tubular and a flow control apparatus. The tubular defines a well annulus and includes an outer member defining a flow conduit. Fluid communication between the well annulus and the flow... | 01/18/2011 |
| 7857056 | Hydrocarbon recovery from impermeable oil shales using sets of fluid-heated fractures An economic method for in situ maturing and production of oil shale or other deep-lying, impermeable resources containing immobile hydrocarbons. Vertical fractures are created using horizontal or vertical wells. The same or other wells are used to inject pressurized... | 12/28/2010 |
| 7857047 | Method of drilling and producing hydrocarbons from subsurface formations A method associated with the production of hydrocarbons. In one embodiment, method for drilling a well is described. The method includes performing drilling operations at one or more wells to a subsurface location in a field to provide fluid flow paths for hydrocarb... | 12/28/2010 |
| 7837055 | LNG containment system and method of assembling LNG containment system An LNG full containment system is provided. The LNG system generally comprises a primary container, and a secondary container positioned around the primary container. The secondary container generally comprises a first end wall, a second end wall, and at least two s... | 11/23/2010 |
| 7836840 | Subsea cryogenic fluid transfer system The current invention includes to systems and methods of transferring cryogenic fluids between two locations. More particularly, some embodiments of the invention are related to systems and methods of using cryogenic risers and rotatable connections for transferring... | 11/23/2010 |
| 7789162 | Method for running tubulars in wellbores Methods for installing tubulars into a highly deviated wellbore may include a) drilling the well to the planned total depth of the interval, b) placing a first fluid into the wellbore below a prescribed measured depth in the high-angle portion of the wellbore, c) pl... | 09/07/2010 |
| 7756694 | Method for interactive automation of fault modeling including a method for intelligently sensing fault-fault relationships A method is disclosed for sensing fault-fault relationships, comprising: automatically sensing interrelationships among faults, and presenting a final model including a fault-fault intersection curve and one fault truncated at the curve to an interpreter representin... | 07/13/2010 |
| 7747552 | Predicting sand-grain composition and sand texture A method and apparatus for predicting sand-grain composition and sand texture are disclosed. A first set of system variables associated with sand-grain composition and sand texture is selected (605). A second set of system variables directly or indirectly cau... | 06/29/2010 |
| 7742875 | Method for geologic modeling through hydrodynamics-based gridding (Hydro-Grids) The present invention is a method of hydrodynamics-based gridding (Hydro-Grids) for creating geologic models of subsurface volumes, such as reservoirs. Vertical grid surfaces may be chosen in an unstructured fashion to provide lateral resolution where needed. Latera... | 06/22/2010 |
| 7736447 | Steel plates for ultra-high-strength linepipes and ultra-high-strength linepipes having excellent low-temperature toughness and manufacturing methods thereof Ultra-high-strength linepipes having excellent low-temperature toughness manufactured by welding together the edges of steel plates comprising C of 0.03 to 0.07 mass %, Si of not more than 0.6 mass %, Mn of 1.5 to 2.5 mass %, P of not more than 0.015 mass %, S of no... | 06/15/2010 |
| 7721807 | Method for managing hydrates in subsea production line A method for managing hydrates in a subsea production system is provided. The system has at least one producing subsea well, a jumper for delivering produced fluids from the subsea well to a manifold, a production line for delivering produced fluids to a production ... | 05/25/2010 |
| 7698066 | Method and apparatus for estimating formation slowness A method and apparatus for estimating the slowness of a geological formation using waveforms recorded by an acoustic borehole logging tool. Phase slowness coherence is extracted from the recorded waveforms after transformation to the frequency domain (804) at... | 04/13/2010 |
| 7686868 | Membrane module for separation of fluids A membrane separation module (10) has a shell (11) having inlet port (20), outlet port (21) and a plurality of membrane units (12) disposed therebetween. Each membrane unit (12) has a plurality of elongated membrane elements... | 03/30/2010 |
| 7681644 | Managing lost returns in a wellbore A method of managing lost returns in a wellbore includes contacting a filter cake with a treating fluid to remove metallic weighting agents from the filter cake, wherein the filter cake is disposed on a face of a formation fracture in the wellbore. The method also i... | 03/23/2010 |
| 7677332 | Method and apparatus for managing variable density drilling mud A method and system for drilling a wellbore is described. The system includes a wellbore with a variable density drilling mud, drilling pipe, a bottom hole assembly disposed in the wellbore and a drilling mud processing unit in fluid communication with the wellbore.... | 03/16/2010 |
| 7672818 | Method for solving implicit reservoir simulation matrix equation A method for solving a matrix equation AX=B, wherein A represents a block sparse matrix, B represents a right hand side block vector and X represents a solution block vector. In one embodiment, the method includes receiving the block sparse matrix and the right hand... | 03/02/2010 |
| 7669657 | Enhanced shale oil production by in situ heating using hydraulically fractured producing wells A method for enhanced production of hydrocarbon fluids from an organic-rich rock formation such as an oil shale formation is provided. The method generally includes completing at least one heater well in the organic-rich rock formation, and also completing a product... | 03/02/2010 |
| 7662215 | Methods for removing sulfur-containing compounds A method for removing sulfur-containing compounds is provided. In one embodiment, the method includes selectively separating a feed stream (118) comprising carbon dioxide and one or more sulfur-containing compounds, including hydrogen sulfide, at conditions s... | 02/16/2010 |
| 7661476 | Gravel packing methods A method associated with the production of hydrocarbons is described. The method includes drilling a wellbore using a drilling fluid, conditioning the drilling fluid, running a production string in the wellbore and gravel packing an interval of the wellbore with a c... | 02/16/2010 |
| 7652074 | Oil-in-water-in-oil emulsion An oil-in-water-in-oil emulsion (O/W/O) comprising a first oil-in-water emulsion dispersed in a second oil, and a method of preparing the same. The O/W/O emulsion can be used as a drive fluid in an enhanced oil recovery process. The O/W/O emulsion of this invention ... | 01/26/2010 |
| 7652073 | Oil-in-water-in-oil emulsion An oil-in-water-in-oil emulsion (O/W/O) comprising a first oil-in-water emulsion dispersed in a second oil, and a method of preparing the same. The O/W/O emulsion can be used as a drive fluid in an enhanced oil recovery process. The O/W/O emulsion of this invention ... | 01/26/2010 |
| 7647972 | Subsurface freeze zone using formation fractures A method of lowering the temperature of a subsurface formation, e.g., a subsurface formation including oil shale, includes completing a well having fluid communication with the subsurface formation at a first depth and a second lower depth. A fracturing fluid is inj... | 01/19/2010 |
| 7647971 | Method of developing subsurface freeze zone A method of lowering the temperature of a subsurface formation, e.g., comprising oil shale, includes injecting a cooling fluid under pressure into a wellbore. The wellbore is completed at or below a depth of the subsurface formation, and the wellbore includes a bore... | 01/19/2010 |
| 7644993 | In situ co-development of oil shale with mineral recovery A method of producing hydrocarbon fluids from a subsurface organic-rich rock formation, for example an oil shale formation, in which the oil shale formation contains water-soluble minerals, for example nahcolite, is provided. In one embodiment, the method includes t... | 01/12/2010 |
| 7643942 | Method for controlled source electromagnetic reconnaissance surveying Method for conducting an efficient and interpretable controlled-source electromagnetic reconnaissance survey for buried hydrocarbons. While a part of the survey area is being set up for measurement and data are being acquired, data from a nearby part of the survey a... | 01/05/2010 |
| 7631691 | Methods of treating a subterranean formation to convert organic matter into producible hydrocarbons Methods are provided that include the steps of providing wells in a formation, establishing one or more fractures in the formation, such that each fracture intersects at least one of the wells, placing electrically conductive material in the fracture, and applying a... | 12/15/2009 |
| 7606691 | Method for locally controlling spatial continuity in geologic models The present invention is a method of generating a geologic model which incorporates a local spatial trend in rock property continuity. Initially, a candidate geologic model is generated by assigning a rock-property value to each block of a model grid. Next, local sp... | 10/20/2009 |
| 7593815 | Estimating noise at one frequency by sampling noise at other frequencies A method, apparatus and computer program for improving the signal-to-noise ratio of a signal S(t), S(t) containing Signal and noise, are disclosed. A measurement of S(t) at a frequency-of-interest is obtained. Noise measurements of S(t) at one or more noise frequenc... | 09/22/2009 |
| 7585816 | Method for inhibiting hydrate formation A method for inhibiting the formation of gas hydrates in a petroleum fluid having hydrate-forming constituents is claimed. More specifically, the method can be used to treat a petroleum fluid, such as natural gas conveyed in a pipe, to inhibit the formation of a hyd... | 09/08/2009 |
| 7584086 | Characterizing connectivity in reservoir models using paths of least resistance The invention relates to numerical simulation of subsurface geological reservoirs. More specifically embodiments of the invention are related to computer modeling of the transmission of properties, for example the flow of fluids (e.g. hydrocarbon natural resources a... | 09/01/2009 |
| 7575050 | Method and apparatus for a downhole excavation in a wellbore The method and apparatus can create excavation cavities suitable for drilling multilateral wellbores through the excavation using a kick-off. One embodiment of the method comprises isolating a wellbore at a determined location, excavating a downhole cavity in a well... | 08/18/2009 |
| 7565243 | Rapid method for reservoir connectivity analysis using a fast marching method Methods for analyzing the connected quality of a hydrocarbon reservoir are disclosed. A model of a portion of the reservoir is divided into cells, each cell having a volume and some attributes, and wherein a speed function is assigned to a portion of the cells. A re... | 07/21/2009 |
| 7541996 | System and method for towing subsea vertical antenna System and method for maintaining vertical alignment of the electrodes of a dipole antenna as it is towed submerged in water. The system includes a source of vertical tension on the antenna, a towline attachable to a tow vessel at one end and to a negatively buoyant... | 06/02/2009 |
| 7540200 | Method and apparatus for fluid flow testing This invention relates generally to testing apparatus and methodology for measuring fluid dynamic properties of structures within fluid flows. One embodiment includes a fluid induced motion testing apparatus of the type which includes a test rig suitable for holding... | 06/02/2009 |
| 7539279 | Logarithmic spectrum transmitter waveform for controlled-source electromagnetic surveying Waveforms for controlled source electromagnetic surveying. The waveforms have frequency spectra that include three or more frequencies spaced at substantially equal intervals on a logarithmic frequency scale and spanning a bandwidth of about one decade or more, at l... | 05/26/2009 |
