A sealed crustless sandwich for providing a convenient sandwich without an outer crust which can be stored for long periods of time without a central filling from leaking outwardly.
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| Number | Title | Issue Date |
| 8183180 | Graphene compositions and drilling fluids derived therefrom Drilling fluids comprising graphenes and nanoplatelet additives and methods for production thereof are disclosed. Graphene includes graphite oxide, graphene oxide, chemically-converted graphene, and functionalized chemically-converted graphene. Derivatized graphenes... | 05/22/2012 |
| 8148303 | Surfactant additives used to retain producibility while drilling A method comprises providing a drilling fluid comprising: an aqueous fluid; and a microemulsion surfactant; and drilling a well bore in a subterranean formation comprising an oleaginous fluid using the drilling fluid, wherein the microemulsion surfactant forms a mic... | 04/03/2012 |
| 8030248 | Drilling fluid and process of making the same This invention relates to drilling fluids and processes for making drilling fluids, such as for use in environmentally sensitive areas. The environmentally friendly drilling fluid includes a first fluid component having between about 5 weight percent to about 95 wei... | 10/04/2011 |
| 7897544 | Compounded hydrocarbon oil and oil base drilling fluids prepared therefrom The invention discloses a compounded hydrocarbon oil which comprises a base hydrocarbon oil, preferably a mixture of paraffinic hydrocarbons, propylene carbonate, and a liquid fatty acid containing at least 12 carbon atoms per molecule, preferably tall oil fatty aci... | 03/01/2011 |
| 7838467 | Microemulsions to convert OBM filter cakes to WBM filter cakes having filtration control Single phase microemulsions improve the removal of filter cakes formed during drilling with oil-based muds (OBMs). The single phase microemulsion removes oil and solids from the deposited filter cake. Optionally, an acid capable of solubilizing the filter cake bridg... | 11/23/2010 |
| 7825071 | Highly branched polymeric materials as surfactants for oil-based muds A wellbore fluid that includes an oleaginous continuous phase; a non-oleaginous phase; and a modified polyesteramide surfactant; methods of formulating such wellbore fluid; and methods of drilling a subterranean formation with such wellbore fluid are disclosed. ... | 11/02/2010 |
| 7767628 | Method for foaming a hydrocarbon drilling fluid and for producing light weight hydrocarbon fluids A hydrocarbon drilling fluid system is disclosed including a hydrocarbon fluid and a foaming composition, where the foaming composition includes a polymer, a gelling agent and its cross-linking agent, an optional foaming agent, or mixtures or combinations thereof. U... | 08/03/2010 |
| 7718580 | Internal-olefin composition and base oil comprising the composition for oil drilling The present invention provides an internal olefin composition comprising a mixture of 60 to 80% by mass of an olefin having 16 carbon atoms and 40 to 20% by mass of an olefin having 18 carbon atoms wherein a content of an α-olefin in the mixture is 10% by mass or l... | 05/18/2010 |
| 7696131 | Diesel oil-based invert emulsion drilling fluids and methods of drilling boreholes Diesel oil-based invert emulsion drilling fluids having fragile gel properties and improved performance. Methods are also disclosed for drilling, running casing, cementing, and/or producing hydrocarbons in a subterranean formation. ... | 04/13/2010 |
| 7674753 | Treatment fluids and methods of forming degradable filter cakes comprising aliphatic polyester and their use in subterranean formations Presented herein are improved bridging agents comprising a degradable material, improved subterranean treatment fluids comprising such improved bridging agents, and methods of using such improved subterranean treatment fluids in subterranean formations. An example o... | 03/09/2010 |
| 7632786 | Methods and fluid compositions for depositing and removing filter cake in a well bore The current invention provides methods of using and drilling and servicing fluid compositions for depositing and removing filter cake from the walls of a well bore. The compositions make use of particulate solid bridging agent comprised of a salt of an organic acid.... | 12/15/2009 |
| 7547663 | Invert drilling fluids and methods of drilling boreholes Methods for drilling, running casing in, and/or cementing a borehole in a subterranean formation without significant loss of drilling fluid are disclosed, as well as compositions for use in such methods. The methods employ drilling fluids comprising fragile gels or ... | 06/16/2009 |
| 7534743 | Invert drilling fluids and methods of drilling boreholes Methods for drilling, running casing in, and/or cementing a borehole in a subterranean formation without significant loss of drilling fluid are disclosed, as well as compositions for use in such methods. The methods employ drilling fluids comprising fragile gels or ... | 05/19/2009 |
| 7485602 | Drilling method using isomerized olefins and paraffin hydrocarbons as base oils for invert emulsion oil muds Environmentally acceptable or regulatory compliant oil-based drilling fluids and methods of using same in drilling a wellbore in a subterranean formation are disclosed. The fluids are able to meet environmental regulations while maintaining acceptable oil mud rheolo... | 02/03/2009 |
| 7456135 | Methods of drilling using flat rheology drilling fluids Methods for drilling, running casing in, and/or cementing a borehole in a subterranean formation without significant loss of drilling fluid are disclosed, as well as compositions for use in such methods. The methods employ drilling fluids comprising fragile gels or ... | 11/25/2008 |
| 7429553 | Process for reducing the toxicity of hydrocarbons This invention relates to a method for reducing the toxicity of a mixture of hydrocarbons by means of fractional distillation, a distillate having a reduced toxicity and a composition including the distillate. ... | 09/30/2008 |
| 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 |
| 7350576 | Methods of sealing subterranean formations using rapid setting plugging compositions Methods for using rapid setting plugging compositions comprising oil, clay, magnesium chloride, and magnesium oxide powder to seal permeable zones in subterranean formations are provided. The permeable zones may be sealed by passing the plugging composition and wate... | 04/01/2008 |
| 7341106 | Methods for wellbore strengthening and controlling fluid circulation loss A sealant composition and methods for using the same are disclosed. In an embodiment, a method of servicing a wellbore in contact with a subterranean formation is disclosed. The method comprises placing a sealing agent and a nonaqueous carrier fluid in the wellbore.... | 03/11/2008 |
| 7338924 | 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 ... | 03/04/2008 |
| 7332458 | Drilling fluid A drilling fluid for use in high oil viscosity formations containing tar, sand and oil entrained therein. The drilling fluid can be comprised of a polymer in an amount from between 0.05% and 5% by volume, a solvent in an amount from between 1% and 20% by volume and ... | 02/19/2008 |
| 7332026 | Cementitious compositions containing interground cement clinker and zeolite Methods and compositions for wellbore treating fluids, especially cementitious compositions that include interground cement clinker and zeolite, with and without gypsum. ... | 02/19/2008 |
| 7328746 | Method and composition for forming protective precipitate on cement surfaces prior to formation acidizing treatment A method and composition for protecting cement surfaces in a well bore treatment zone from the destructive effects of acid mud and other acidization processes commonly used to stimulate hydrocarbon production from the formation, includes contacting the cement with a... | 02/12/2008 |
| 7326291 | Cementitious compositions containing interground cement clinker and zeolite Methods and compositions for wellbore treating fluids, especially cementitious compositions that include interground cement clinker and zeolite, with and without gypsum. ... | 02/05/2008 |
| 7316275 | Well treating compositions containing water superabsorbent material and method of using the same A well treating composition containing a polysaccharide-based water-superabsorbent material has particularly applicability as a thermal insulating, fracturing or acid stimulation fluid. The water-superabsorbent material is capable of absorbing, at a minimum, its own... | 01/08/2008 |
| 7311814 | Process for the production of hydrocarbon fluids Hydrocarbon fluids are produced by hydrocracking a vacuum gas oil stream, fractionating and/or hydrogenating the hydrocracked vacuum gas oil. The fluids typically have ASTM D86 boiling point ranges within the range 100° C. to 400° C. the range being no more than 7... | 12/25/2007 |
| 7303015 | Cementitious compositions containing interground cement clinker and zeolite Methods and compositions for wellbore treating fluids, especially cementitious compositions that include interground cement clinker and zeolite, with and without gypsum. ... | 12/04/2007 |
| 7303013 | Method for reducing density of a system fluid and for performing drilling operations using a reduced density system fluid comprising aerogel Methods for reducing density of a system fluid and performing drilling operations using a reduced density system fluid comprising aerogel. ... | 12/04/2007 |
| 7297661 | Synthetic base fluid for enhancing the results of crude oil characterization analyses Blends of synthetic olefins for use as the continuous phase of fluids selected from the group consisting of drilling, drill-in, and completion fluids. The blends meet EPA discharge requirements while also permitting investigators to clearly discern the presence and ... | 11/20/2007 |
| 7285164 | Fluid loss additives for cement slurries Methods for cementing in a subterranean zone, which use a cement composition that includes zeolite, cementitious material, proportioned fluid loss control additives and a mixing fluid. Cement compositions containing proportioned fluid loss control additives, and met... | 10/23/2007 |
| 7285515 | Compositions of oil-based biodegradable drilling fluids and process for drilling oil and gas wells Compositions of oil-based biodegradable drilling fluids are described, the compositions comprising an oil phase composed by methyl esters of soybean oil fatty acids, an aqueous phase finely dispersed in the oil phase by specific emulsifiers and several other additiv... | 10/23/2007 |
| 7279447 | Subterranean well and oil or gas stream treatment with bis(3-alkoxyalkan-2-ol) sulfides, sulfones, and sulfoxides: new surface active agents Compositions containing surfactant compounds according to formula (I) ROCH2CH(OH)CR1R2ZCR1R2CH(OH)CH2OR, (I) wherein Z is S, SO, or SO2, can have a range of equilib... | 10/09/2007 |
| 7278485 | Method of formulating and using a drilling mud with fragile gels A method for drilling, running casing in, and/or cementing a borehole in a subterranean formation without significant loss of drilling fluid is disclosed, as well as compositions for use in such method. The method employs a drilling fluid comprising a fragile gel or... | 10/09/2007 |
| 7268101 | Formate based liquid gel concentrates A liquid gel concentrate for forming a high viscosity treating fluid is provided which can be premixed and stored before being used. The concentrate is comprised of an aqueous formate solution, at least one hydratable polymer which yields viscosity upon hydration an... | 09/11/2007 |
| 7256159 | Fluid loss reducer for high temperature high pressure water based-mud application The present invention concerns a water-based drilling mud for utilization in the drilling of oil wells comprising an aqueous phase wherein the aqueous phase contains an oil soluble polymer in the form of a gel as a fluid loss reducer. The subject invention further r... | 08/14/2007 |
| 7237610 | Degradable particulates as friction reducers for the flow of solid particulates and associated methods of use Particulate compositions that comprise macro-particulates, and degradable particulates in an amount sufficient to reduce friction between the macro-particulates, the degradable particulates having a mean particle diameter of at least about 20 times smaller than the ... | 07/03/2007 |
| 7226896 | Organic emulsion-breaking formula and its use in treating well bores drilled in oil-base mud An organic based emulsion-breaking formulation for use in treating well bores drilled in oil-bearing mud that is not eco-toxic and is optimally compatible with formation fluids comprises: as the emulsion-breaking agent, at least on... | 06/05/2007 |
| 7220709 | Process of diverting stimulation fluids A process for stimulating a formation is disclosed wherein a diverting fluid is used to divert an acid treatment package from a high permeability or damaged portion of a formation to a low permeability or undamaged portion of a formation. The fluid preferably forms ... | 05/22/2007 |