Patent application number | Description | Published |
20090151938 | STIMULATION THROUGH FRACTURING WHILE DRILLING - A method for preparing a formation surrounding a wellbore to bear hydrocarbons through a borehole is disclosed. In one step, a bottomhole assembly is inserted into the borehole. The formation is drilled with the bottomhole assembly. The formation may be characterized with logging tools, probes, sensors, seismic system and/or the like to create first information. One or more fractures are placed in the formation without removal of the bottomhole assembly from the wellbore. Further, continuous drilling of the formation is performed with the bottomhole assembly after/during placing the fractures. Further characterizing of the formation with the probes, sensors/systems or the like is performed to produce second information. Another fracture is placed with feedback from the second information. Repeating the drilling, characterizing and placing of fractures as necessary during the formation preparing process. | 06-18-2009 |
20100059227 | STIMULATED OIL PRODUCTION USING REACTIVE FLUIDS - This invention relates to methods for stimulating oil production from well by pumping reactive stimulation fluids from the well into the formation. The methods are particularly relevant to cold heavy oil production. This invention provides methods of stimulating production from a formation surrounding a well, comprising pumping a fluid from the well into the formation so as to create a hydraulic fracture, wherein the fluid contains one or more reactive species that destabilise cohesive forces in the formation matrix, and allowing the fluid to leak of into the formation and react with the formation matrix so as to produce a destabilised zone in the formation around the location of the fracture such that formation fluids and sand particles can be produced from the formation through the zone and into the well. The methods preferably comprise selecting the fluid so as to produce an at least partially unconsolidated formation matrix in the destabilised zone. It is particularly preferred to produce fluids from the formation so as to cause worm-holing in the destabilised zone. The fluid can contain additives in liquid form, solid or granular form. It is also preferred that the fluid acts as a diluent for heavy oil and can also modify formation fluid rheology. | 03-11-2010 |
20110036577 | MANIPULATION OF FLOW UNDERGROUND - Solid material required at a subterranean location is supplied from the surface suspended in a carrier liquid and agglomerated below ground by means of a binding liquid. Agglomeration is achieved by arranging that the binding liquid and the particulate solid are similar to each other but opposite to the carrier liquid in hydrophilic/hydrophobic character. The solid and the binding liquid may both be hydrophobic while the carrier liquid is hydrophilic, or vice versa. The solid may be hydrophobically surface modified to render it hydrophobic. The binding liquid may be provided as a precursor which converts to the binding liquid below ground to trigger agglomeration after arrival at the subterranean location. | 02-17-2011 |
20110036583 | SLIP-LAYER FLUID PLACEMENT - A method of fluid placement in a hydraulic fracture created in a subterranean formation penetrated by a wellbore that comprises the use of one or more reactants that form a low friction layer between the fluids that penetrate the fracture in consecutive treatment stages. Reactants can be added to the fluid that is the carrier or other fluid to be placed in a specific region of the fracture, namely as an upper or lower boundary of the fracture, or added to both the stage that requires placement in a specific section of the fracture and in the stage preceding it, especially the pad and carrier fluids used in consecutive stages. | 02-17-2011 |
20110108271 | ENHANCING HYDROCARBON RECOVERY - Recovery of hydrocarbon fluid from low permeability sources enhanced by introduction of a treating fluid is described. The treating fluid may include one or more constituent ingredients designed to cause displacement of hydrocarbon via imbibition. The constituent ingredients may be determined based on estimates of formation wettability. Further, contact angle may be used to determine wettability. Types and concentrations of constituent ingredients such as surfactants may be determined for achieving the enhanced recovery of hydrocarbons. The selection can be based on imbibition testing on material that has been disaggregated from the source formation. | 05-12-2011 |
20110180259 | Hydraulic Fracturing Proppants - A method is given for treating a wellbore in a subterranean formation by hydraulic fracturing, slickwater fracturing, gravel packing, and the like, by using plate-like materials as some or all of the proppant or gravel. The plate-like materials are particularly useful in complex fracture systems, for example in shales. They may be used as from about 20 to about 100% of the proppant. Relative to conventional proppants, plate-like proppants demonstrate (a) enhanced crush resistance of the proppant due to better stress distribution among proppant particles, (b) diminished proppant embedment into formation fracture faces due to the greater contact surface area of proppant particles with the formation, (c) better proppant transport due to lower proppant settling rates, (d) deeper penetration into branched and fine fracture networks, and (e) enhanced proppant flowback control. Preferred plate-like proppants are layered rocks and minerals; most preferred is mica. | 07-28-2011 |
20110284213 | Device used in the form of a packer or a temporary plug - This invention relates to geophysical research techniques, more particularly, to geophysical well logging methods, and may be used to seal near-wellbore formation during logging activities. | 11-24-2011 |
20120151998 | WETTABILITY AND MATRIX IMBIBITION ANALYSIS - A method of determining wettability of a rock sample, such as from a core sample is described. The sample is preferably crushed or comminuted to a particulate size where micro fractures have been eliminated, but where the particles are still large enough to represent the native rock matrix and texture. The comminuted core sample is exposed to a test fluid for a given period of time. The rock sample can be split into many separate aliquots, and a series of tests is performed using a series of different fluids and/or the same fluid for different exposure times. The excess test fluid residing on the surfaces of sample particles is removed. The test fluid imbibed into the interior of the particulate sample is then measured. The test fluid can be, for example, water, a non-aqueous fluid, and/or a solution of miscible solvents. The technique used to measure the imbibed fluid depends on the solvent (imbibing fluid) being studied. In one example, this technique includes both gravimetric determination and quantitative chemical analysis. The detection of water can be via Karl Fischer titration. | 06-21-2012 |
20120152548 | METHOD TO CHARACTERIZE UNDERGROUND FORMATION - A method for determining a characteristic of an underground formation with a fluid is described. The method includes providing a sample material of the underground formation; measuring the permeability and the porosity of the sample material; performing a drainage test on the sample material using the fluid; estimating the threshold pressure of the sample material from the drainage test, the permeability and the porosity measurements; and determining the receding contact angle of the fluid on the sample material from the threshold pressure. The sample material can be disaggregated material. | 06-21-2012 |
Patent application number | Description | Published |
20120043085 | WELLBORE SERVICE FLUID AND METHODS OF USE - A method is described to predict the composition of favorable bridging agents for a particular situation in which the solution thermodynamics of the chemicals used in the composition of the bridging material is carefully evaluated. Wellbore service fluids are also described that contain materials such as sodium bicarbonate, a material such as a salt containing water in a crystal structure, a material containing at least one boron-oxygen bond, or a non-polymer material having low solubility at low temperatures and high solubility at temperatures close to an expected long-term static bottom hole temperature. The material is provided in aqueous medium in sufficient concentration in the aqueous medium so as to act as a diverting agent during a hydraulic fracturing procedure using the fluid. The wellbore service fluid is pumped through the wellbore and the flow of the fluid is diverted using a plug that subsequently substantially dissolves due to changes in temperature and/or pressure. | 02-23-2012 |
20140034320 | HIGH SOLIDS CONTENT FLUID HAVING DEGRADABLE OIL - A fluid comprising a plurality of particulates having an Apollonian particle size distribution dispersed in a carrier fluid optionally comprising a surfactant, the particulates, the carrier fluid, or both comprising a degradable oleaginous fluid. Methods to utilize the fluid are also disclosed. | 02-06-2014 |
20140332207 | Methods To Characterize Underground Formation - A method for determining a characteristic of an underground formation with a fluid is described. The method includes providing a sample material of the underground formation; measuring the permeability and the porosity of the sample material; performing a drainage test on the sample material using the fluid; estimating the threshold pressure of the sample material from the drainage test, the permeability and the porosity measurements; and determining the receding contact angle of the fluid on the sample material from the threshold pressure. The sample material can be disaggregated material. | 11-13-2014 |
Patent application number | Description | Published |
20100263865 | PROPPANTS AND USES THEREOF - Compositions comprising a proppant core having an outer surface and polymeric microspheres attached to at least a portion of the outer surface are described. The compositions are useful, for example, to increase the productivity of a hydrocarbon oil or gas bearing well. | 10-21-2010 |
20100263870 | METHODS OF CONTACTING AND/OR TREATING A SUBTERRANEAN FORMATION - Methods of contacting a subterranean formation are described which provide improved control or reduction of particulate migration, transport or flowback in wellbores and reservoirs, and which may do so without sacrificing substantial hydraulic conductivity. One method comprises injecting into a well-bore intersecting the subterranean formation a fluid composition comprising a first component and a second component dispersed in a carrier fluid, at least a portion of the first component or second component being provided as at least one multicomponent article having an aspect ratio greater than 1:1.1; forming a network comprising the first component; and binding the network with the second component. | 10-21-2010 |
20100282468 | FRACTURING FLUID COMPOSITIONS COMPRISING SOLID EPOXY PARTICLES AND METHODS OF USE - Fluid compositions and methods of making and using same are described, the fluid compositions comprising at least one solid epoxy particle, at least one epoxy resin curing agent, and at least one type of proppant particles. The methods comprise deploying a fluid composition into a wellbore extending to a subterranean geological formation using pressure sufficient to form a fracture in the subterranean geological formation, and immobilizing at least a portion of the solid epoxy particles and proppant particles in the fracture. Embodiments of the fluid compositions are useful for increasing hydrocarbon production from subterranean geologic formations, and/or controlling solids migration in such formations. | 11-11-2010 |
20100288495 | METHODS OF TREATING SUBTERRANEAN WELLS USING CHANGEABLE ADDITIVES - Fluid compositions and methods of making and using same are described, one composition comprising a well treatment fluid and an additive combined with the well treatment fluid, wherein the additive is selected from solids, liquids and combinations thereof, the additive having a surface shape, at least one property of the surface shape enabling it to change under influence of a controllable parameter after the composition is deployed into a hydraulic fracture or gravel pack. In methods of the disclosure, the additive exists initially in a first state, and then is changed to a second state. The first state may increase proppant flowback efficiency, while the second state may increase hydraulic conductivity. In certain embodiments, the additive may change back to its first state. | 11-18-2010 |
20150053402 | FIBER PASTE AND METHODS FOR TREATING A SUBTERRANEAN FORMATION WITH THE FIBER PASTE - Methods of treating a subterranean formation are disclosed that include contacting a paste including a liquid chemical and a lightweight fiber having a high aspect ratio with a treatment fluid, and placing the treatment fluid into a subterranean formation. Also disclosed is an additive for treating a subterranean formation comprising a paste including a liquid chemical and a lightweight fiber having a high aspect ratio. | 02-26-2015 |