Abstract: The present invention relates to a method for inhibiting water permeation in an extraction well of a hydrocarbon oil from an underground reservoir which comprises injecting into said reservoir at least one polymerizable composition comprising: at least one hydrophilic monomer, -at least one hydrophilic initiator of radical polymerization with thermal activation (hydrophilic initiator), at least one lipophilic initiator of radical polymerization with thermal activation (lipophilic initiator). The present invention also relates to the polymerizable compositions that can be used in said method.

Abstract: A particulate profile control agent self-adaptive to a size of formation pore throat and a preparation method thereof include: raw materials and mass fraction for preparing a system including a main agent of 0.04˜0.2%, a nucleating agent of 0.005˜0.01%, a crosslinking agent of 0.002˜0.04%, an additive of 0.005˜0.01% and water. The preparation method includes: adding the main agent in proportion to the water and evenly mixing the mixture of the main agent and the water, and then adding the additive, the crosslinking agent and the nucleating agent in turn so as to form the profile control agent; pumping the profile control agent into the formation to be reacted at a reservoir temperature for a period of time to form colloidal particles on the spot for sealing off a high-permeability layer. The present disclosure is of easy operation and low cost, low initial viscosity and good injectivity.

Abstract: Embodiments relate to solid nano-particles applied to the surface of well equipment to treat bituminous material adhesion. An embodiment provides a method of treating the surface of well equipment. The method may comprise applying a solid nanoparticle film to the surface of the well equipment with a treatment fluid comprising solid nanoparticles. The method may further comprise allowing the solid nanoparticles to interact with the surface of the well equipment and/or bituminous materials adhered to the surface of the well equipment to remove at least a portion of the bituminous materials from the surface of the well equipment.

Abstract: A method for inhibiting the permeation of water in an extraction well of a hydrocarbon fluid from an underground reservoir is described. The method includes the injection of at least one treatment fluid into the underground reservoir. The treatment fluid contains at least one emulsion or dispersion in an organic solvent of at least one copolymer of a first monomer of an acrylic monomer or a methacrylic monomer, and a second monomer having at least one ethylene unsaturation and at least one polyoxyethylene chain. The emulsion or dispersion of the copolymer used in the method is also described.

Abstract: Provided is a glass bead suspension. The glass bead suspension comprises water, a synthetic hectorite having an empirical formula of Si8Mg5.45Li0.4H4O24Na0.7, and glass beads.

Abstract: A date palm seed-based lost circulation material (LCM) is provided. A date palm seed LCM may be manufactured by drying date palm seeds and grinding the dried date palm seeds to create a plurality of particles. The particles may have sizes less than 4 mm, from 1 mm to 2 mm, or from 2 mm to 4 mm. The date palm seed LCM may have a volumetric swelling greater than an LCM formed from tree nuts and may have a volumetric swelling of at least 0.3 cubic centimeters per gram. The date palm seed LCM may have a D50 shift factor less than an LCM formed from calcium carbonate and may have a D50 shift factor of at least 0.38%. The date palm seed LCM may have a stability index of at least 0.95. Methods of lost circulation control and manufacture of a date palm seed LCM are also provided.

Abstract: A polymerizable chemical system for consolidating particulates in a subterranean formation including a liquid resin, a curing agent, and a permeability enhancing additive. The chemical system is a homogenous composition that polymerizes to forms a solid upon heating at a temperature greater than 60° C. Consolidating particulates in a subterranean formation includes providing a polymerizable chemical system comprising a liquid resin, a curing agent, and a permeability enhancing additive to a subterranean formation, and polymerizing the polymerizable chemical system to consolidate particulates in the formation to yield a porous consolidated particulates pack.

Abstract: Disclosed is a composition and use thereof for the recovery of hydrocarbon fluids from a subterranean reservoir. More particularly, this invention concerns ?-glycol containing sulfonated epoxy resin composition and method for preparing said composition. The ?-glycol containing sulfonated epoxy resin composition is made by forming a reaction product comprising an epoxide-containing compound, a primary amino sulfonate, and optionally one or more of a primary monoamine alkylene oxide oligomer, followed by converting any unreacted epoxide groups in the reaction product to ?-glycol groups by hydrolysis. Said ?-glycol containing sulfonated epoxy resin compositions demonstrate good solubility in aqueous solutions and are useful for modifying the permeability of subterranean formations and increasing the mobilization and/or recovery rate of hydrocarbon fluids present in the formations.

Abstract: A date tree trunk-based lost circulation material (LCM) is provided. The date tree trunk LCM includes date tree trunk fibers produced from date tree trunks. The date tree trunks may be obtained from the date tree waste produced by the processing of date trees in the production of date fruits. The date tree trunk LCM may include fibers having lengths less than 8 millimeters (5 mm) and having an aspect ratio range of 10 to 15. Methods of lost circulation control using a date tree trunk LCM and manufacture of a date tree trunk LCM are also provided.

Abstract: An injection and downhole-mixing system and method mix two or more components downhole in a wellbore. The system delivers two or more components via fluidly separated delivery channels from the surface into a downhole injection point of the wellbore wherein they are mixed and injected into the wellbore to form a solidifying isolation mixture therein at or about the downhole injection point. After set, the isolation mixture forms a solid, impermeable barrier in the wellbore. The components for forming such barriers may be epoxies, polymers, resins, resin-based gypsum cements, and the like.

Abstract: A method and a sealing fluid for setting a packer in an annulus between a well bore and a well tubular is provided, which by adjusting i.a. the density, viscosity and setting time of the sealing fluid is able to provide among other things a full radial seal with an acceptable axial dispersion, in particular in highly deviated wells and/or in wells having eccentric annuli.

Abstract: In an embodiment, a hydrocarbon recovery material includes an organic acid and a water material, the organic acid including a naphthenic acid, L-prolific, or a combination thereof. In another embodiment, an oil recovery method includes injecting a treatment fluid into a reservoir under reservoir conditions, the reservoir containing hydrocarbons, and the treatment fluid includes an organic acid and a water material. In another embodiment, an oil recovery method includes injecting a treatment fluid into a reservoir containing hydrocarbons, the treatment fluid comprising an organic acid in one or more of an oil-in-water emulsion, a resin dispersion, or a polymer capsule.

Abstract: A subsurface system includes a tubular having an opening. A filtration media is mounted about the tubular over the opening. The filtration media includes a selectively expandable outer surface positioned over the opening. The selectively expandable outer surface includes one or more selectively expandable openings. The one or more selectively expandable openings transition from a first dimension to a second dimension upon expansion of the selectively expandable outer surface.

Abstract: A viscosity-retaining formulation for use in high-temperature hydrocarbon-bearing reservoir applications. The formulation includes a brine composition and a viscosity enhancing composition, the viscosity enhancing composition operable to enhance viscosity retention of the viscosity-retaining formulation at least, in part, through micellization, the viscosity enhancing composition including a polycation composition and an anionic surfactant composition.

Abstract: A method of treating a subterranean formation penetrated by a wellbore comprises: introducing into the subterranean formation a treatment fluid comprising coated polymeric particles having a polymeric core and a curable thermoset coating disposed on the polymeric core; allowing the curable thermoset coating to cure under downhole conditions; and forming a fluid-permeable pack from the coated polymeric particles, the fluid-permeable pack reducing or substantially preventing the passage of formation particles from the subterranean formation into the wellbore while allowing passage of formation fluids from the subterranean formation into the wellbore.

Abstract: According to at least one embodiment of the present description, a cement slurry includes 50% to 90% BWOC of a cement precursor material based on a total weight of the cement slurry; and from 10% to 50% BWOC of a flexible additive based on the total weight of the cement slurry. The flexible additive includes hydrophilic polyolefin fibers or 2,6-di-tert-butyl-p-cresol.

Abstract: Methods of ranking formation stabilizer performance are described. The methods include obtaining drill cuttings from a subterranean formation, grinding and sieving the drill cuttings to a particle size larger than 200 mesh, adding a formation stabilizer solution to the ground and sieved drill cuttings to form a mixture, agitating the mixture, and measuring turbidity of the agitated mixture.

Abstract: Aqueous fluids containing hydrophobic particles are effective media for cleaning water-base drilling fluids and drilling fluid solids from the interior surface of a casing string. Hydrophobic fibers may be added to a drilling fluid, a spacer fluid, a chemical wash, or combinations thereof. The disclosed fluids may be employed during primary cementing operations where it is not possible to use a bottom plug.

Abstract: A method for creating access to annular spacing during P&A operations is described. Specifically, helical coils are cut into one or more casings before the plugging material is set. The plugging material is able to exit the helical coils, forming multiple, small rock-to-rock seals.

Abstract: A rapidly dehydrating lost circulation material (LCM) composition that forms an acid-soluble plug is provided. The LCM composition may include a carrier fluid, an acid-soluble-particulate material, a viscosifier, and date tree rachis fibers. The carrier fluid may be water and the viscosifier may be a cellulosic microfiber. The LCM composition may alter a lost circulation zone by forming an acid-soluble plug in a fracture of the lost circulation zone. The acid-soluble plug may be removed via an acid solution, such as a hydrochloric acid solution. Methods of lost circulation control and manufacture of a rapidly dehydrating LCM are also provided.

Abstract: A rapidly dehydrating lost circulation material (LCM) composition that forms an acid-soluble plug is provided. The LCM composition may include a carrier fluid, an acid-soluble-particulate material, a viscosifier, and date tree rachis fibers. The carrier fluid may be water and the viscosifier may be a cellulosic microfiber. The LCM composition may alter a lost circulation zone by forming an acid-soluble plug in a fracture of the lost circulation zone. The acid-soluble plug may be removed via an acid solution, such as a hydrochloric acid solution. Methods of lost circulation control and manufacture of a rapidly dehydrating LCM are also provided.

Abstract: A rapidly dehydrating lost circulation material (LCM) composition that forms an acid-soluble plug is provided. The LCM composition may include a carrier fluid, an acid-soluble-particulate material, a viscosifier, and date tree rachis fibers. The carrier fluid may be water and the viscosifier may be a cellulosic microfiber. The LCM composition may alter a lost circulation zone by forming an acid-soluble plug in a fracture of the lost circulation zone. The acid-soluble plug may be removed via an acid solution, such as a hydrochloric acid solution. Methods of lost circulation control and manufacture of a rapidly dehydrating LCM are also provided.

Abstract: A variety of systems, methods and compositions are disclosed, including, in one method, a method may comprise pumping a solids containing fluid through a wellbore and into a previously fractured subterranean formation at an injection rate and pressure that is at or above a fracture gradient of the previously fractured subterranean formation, wherein the solids containing fluid comprises a curable resin coated proppant; lowering the injection rate of the solids containing fluid to allow a portion of the curable resin coated proppant to, at least partially, pack and fill one or more voids surrounding a casing disposed in the wellbore; and allowing the portion of the curable resin coated proppant disposed in the one or more voids to cure and form an in situ mechanical screen.

Abstract: A method of fracturing a subterranean formation penetrated by a well comprises: forming a fracturing composition comprising a carrier fluid; and a superabsorbent polymer component comprising one or more of the following: a first composite of a proppant and a first superabsorbent polymer in an unhydrated form, the first superabsorbent polymer being at least partially embedded in a void area of the proppant; a coated superabsorbent polymer; a superabsorbent material having a three-dimensional network; or a second composite of a second superabsorbent polymer and a slow-release breaker; and pumping the hydraulic fracturing composition into the subterranean formation to create or enlarge a fracture.

Abstract: Methods for treating a zone of a subterranean formation penetrated by a wellbore comprising: (A) forming a treatment fluid comprising: (i) an aqueous continuous phase; (ii) a first chemical having: (a) a single epoxy group; and (b) at least one alkoxy group on a silicon atom, wherein the first chemical is water soluble or dissolves with hydrolysis in the aqueous continuous phase; (iii) a second chemical having an amine group, wherein the second chemical is water soluble or dissolves with hydrolysis in the aqueous continuous phase; and (B) introducing the treatment fluid through the wellbore into the zone of the subterranean formation.

Abstract: A lost circulation material (LCM) having date fruit caps is provided. The date fruit cap LCM includes date fruit caps from a date tree. The date fruit caps have multiple flakes (for example, three flakes) attached at one end to an end cap and free at the other end. The date fruit caps may be obtained from the waste product of date tree and date fruit processing. The date fruit cap LCM may be added to a drilling fluid (for example, a drilling mud) to mitigate or prevent such lost circulation in a well. Methods of lost circulation control with the date fruit cap LCM are also provided.

Abstract: A lost circulation material (LCM) having date fruit caps is provided. The date fruit cap LCM includes date fruit caps from a date tree. The date fruit caps have multiple flakes (for example, three flakes) attached at one end to an end cap and free at the other end. The date fruit caps may be obtained from the waste product of date tree and date fruit processing. The date fruit cap LCM may be added to a drilling fluid (for example, a drilling mud) to mitigate or prevent such lost circulation in a well. Methods of lost circulation control with the date fruit cap LCM are also provided.

Abstract: A fluid composition comprising: (A) a liquid hardenable resin component comprising a resin; and (B) a hardening agent component comprising a hardening agent for the resin; wherein at least one of the resin or the hardening agent comprises a molecule having at least one heavy atom. The substitution of one or more heavy atoms that have a higher atomic weight than the other atoms of the molecule, increases the molecular mass of the resin or hardening agent, and hence, the density of the fluid composition. A method of treating a treatment zone of a well, the method comprising: introducing the treatment fluid into a well bore; and allowing the treatment fluid to form a hardened mass the well bore.

Abstract: The invention provides a method of treating a subterranean formation, comprising placing a composition comprising proppant particles into the subterranean formation, wherein at least a portion of proppant particles is coated with a hardened resin that is a cured product of a curable composition comprising: (A) a curable resin and (B) a hardening agent.

Abstract: A lost circulation material (LCM) having chips formed from date tree spikelets of a date tree is provided. The date tree spikelets may be obtained from the waste product of date tree and date fruit processing. The date tree spikelet-based LCM may be added to a drilling fluid (for example, a drilling mud) to mitigate or prevent such lost circulation in a well. The date tree spikelet-based LCM may be added to one or more additional LCMs as an LCM additive for addition to a drilling fluid (for example, a drilling mud) to mitigate or prevent such lost circulation in a well. Methods of lost circulation control with the date tree spikelet-based LCM are also provided.

Abstract: A date tree trunk- and rachis-based lost circulation material (LCM) is provided. The date tree trunk and rachis LCM includes superfine date tree trunk fibers produced from date tree trunks and superfine date tree rachis fibers produced from date tree rachises. The date tree trunks and rachises may be obtained from the date tree waste produced by the processing of date trees in the production of date fruits. The date tree trunk and rachis LCM may include fibers having lengths in the range of about 20 microns to about 300 microns. Methods of lost circulation control using a date tree trunk and rachis LCM and manufacture of a date tree trunk and rachis LCM are also provided.

Abstract: Highly random acrylamide-acrylic acid copolymers are described. Ionic crosslinking of the highly random copolymers in dilute solution results in improved viscosity and gel strength compared to copolymers prepared by conventional methods. The ionically crosslinked copolymers are useful in enhanced oil recovery processes.

Abstract: A self-adaptive cement formulation includes cement, water and thermoplastic block-polymer particles. The set cement demonstrates self-healing properties when exposed to methane, and is particularly suited for well-cementing applications. After placement and curing, the self healing properties help maintain zonal isolation should bonding be disrupted between the set cement and the formation or a casing string, should cracks or defects appear in the set-cement matrix, or both.

Abstract: A date palm seed-based lost circulation material (LCM) is provided. A date palm seed LCM may be manufactured by drying date palm seeds and grinding the dried date palm seeds to create a plurality of particles. The particles may have sizes less than 4 mm, from 1 mm to 2 mm, or from 2 mm to 4 mm. The date palm seed LCM may have a volumetric swelling greater than an LCM formed from tree nuts and may have a volumetric swelling of at least 0.3 cubic centimeters per gram. The date palm seed LCM may have a D50 shift factor less than an LCM formed from calcium carbonate and may have a D50 shift factor of at least 0.38%. The date palm seed LCM may have a stability index of at least 0.95. Methods of lost circulation control and manufacture of a date palm seed LCM are also provided.

Abstract: Emulsions of mobility control polymers can be used to increase recovery of crude oil from a subterranean hydrocarbon-containing formation. A flooding fluid comprising the polymer emulsions are injected into a well that is in contact with the subterranean hydrocarbon-containing formation. The polymers can be temporarily cross-linked and have protected shear degradation and improved injectivity into the well; the shear resistance can be measured in terms of viscosity loss due to shear, and the improved injectivity can be measured in terms of the flooding fluid's filter ratio, flow rate, and viscosity.

Abstract: In one embodiment, a method of formulating a sealant to span an opening and form a seal with surfaces across the opening is provided. The method further includes selecting a fluid material capable of contacting and adhering to the surface of the opening and which reacts to form a solid material as a result of a thermal reaction. The method further includes selecting and intermixing one or more solids with the fluid material to form a composite, wherein the solids migrate within a column of the composite sealant before the composite sealant cures from a fluid to a solid and bonds to the surfaces of the opening, and the change in volume of the lower portion of the composite sealant into which the solids have migrated, as the temperature thereof changes during curing, is insufficient to cause it to pull away from the surfaces of the opening or fail internally.

Abstract: A date tree trunk-based lost circulation material (LCM) is provided. The date tree trunk LCM includes date tree trunk fibers produced from date tree trunks. The date tree trunks may be obtained from the date tree waste produced by the processing of date trees in the production of date fruits. The date tree trunk LCM may include fibers having lengths less than 8 millimeters (5 mm) and having an aspect ratio range of 10 to 15. Methods of lost circulation control using a date tree trunk LCM and manufacture of a date tree trunk LCM are also provided.

Abstract: This disclosure relates to polymer coatings with desirable anti-fouling properties. In certain embodiments, polymers are coated on particles which allow for conjugation with targeting moieties. In certain embodiments, the particles are nanoparticles with targeting moieties that bind with tumor associated antigens.

Abstract: New cement-polymer composites and processes of making and using are detailed. One exemplary cement-polymer composite include a Portland cement, an epoxide polymer, a thiol-containing crosslinking agent, and an optional phase separation inhibitor. These composites are dynamically self-healing, mechanically robust, and thermally stable in high temperature environments and can be expected to increase service lifetimes in various applications including energy producing wellbores.

Abstract: Systems and methods for treating formation intervals including forming a low permeability layer on a surface of the interval and pumping a sand control treating solution through the layer, which diverts the flow into the formation permitting improved treatment uniformity and improved overall internal treatment.

Abstract: A method for recovering hydrocarbon material from a subterranean formation includes introducing a treatment fluid into the subterranean formation. One treatment fluid includes at least one organometallic material having a metal or metalloid from Group III of the Periodic Table or a transition metal. An optional second fluid having an organophosphorous material can also be introduced. Another treatment fluid includes the reaction product of a transition metal compound and a silicon-containing material.

Abstract: The invention relates to a method for coating surfaces, to a corresponding coating, and to the use of the objects coated according to said method. According to the invention, the method has or consists of the following steps: I. providing a substrate with a cleaned surface, II. contacting and coating the surfaces with an aqueous composition in the form of a dispersion and/or suspension, VI. if necessary rinsing the organic coating, and VII. drying and/or baking the organic coating or VIII. if necessary drying the organic coating and carrying out a coating process using a similar or additional coating composition prior to a drying and/or baking process, wherein between step I and step II, the coating process is carried out using an aqueous composition in the form of a dispersion and/or suspension on the basis of a colloidal silicate sol, which incorporates multivalent metal cations, or a silane- or silicate-modified polymer and if necessary a rinsing process is carried out.

Abstract: The present invention discusses methods for making a cement composition comprising a nanoparticle zeolite. The addition of the nanoparticle zeolite may provide enhanced compressive and tensile strengths, improved rheology, and a change to the cement microstructure. These effects may improve the cement's use as a cement sheath in drilling operations and under high pressure and high temperature (HPHT) conditions.

Abstract: The present invention discusses methods for making a cement composition comprising a nanoparticle zeolite. The addition of the nanoparticle zeolite may provide enhanced compressive and tensile strengths, improved rheology, and a change to the cement microstructure. These effects may improve the cement's use as a cement sheath in drilling operations and under high pressure and high temperature (HPHT) conditions.

Abstract: A drilling fluid composition that contains micronized barite particles with a particle size in the range of 1 to 5 ?m, and also a method of fracturing a subterranean formation using the drilling fluid composition. Various embodiments of the micronized barite particles and the method of making thereof, the drilling fluid composition, and the method of fracturing a subterranean formation are also provided.

Abstract: Methods for forming a fluid seal in a subterranean formation may comprise: providing a treatment fluid comprising an aqueous carrier fluid, a sealant composition, and a crosslinked polysaccharide composition. The treatment fluid is introduced into a wellbore penetrating a subterranean formation and the crosslinked polysaccharide composition is formed into a viscosified gel in the wellbore. The viscosified gel substantially spans the diameter of the wellbore and holds the sealant composition in place. After forming the crosslinked polysaccharide composition into a viscosified gel in the wellbore, forming a fluid seal in the wellbore with the sealant composition.

Abstract: Compositions using hardened resins as coatings for proppant particles. The methods for treating a subterranean formation with the coated proppant particles include the step of treating a subterranean formation with a composition that includes proppant particles that are coated with the hardened resin. The hardened resin is a cured product of a curable epoxy resin, a hardening agent, and an organosilicon compound.

Abstract: The present invention discusses methods for making a cement composition comprising a nanoparticle zeolite. The addition of the nanoparticle zeolite may provide enhanced compressive and tensile strengths, improved rheology, and a change to the cement microstructure. These effects may improve the cement's use as a cement sheath in drilling operations and under high pressure and high temperature (HPHT) conditions.

Abstract: Proppant particles may be coated with some particles coated with a diene and other proppant particles coated with a dienophile that would bind the particles through a Diels-Alder reaction. In some other embodiments, proppant particles may be coated with alternating layers of diene and dienophile that would react through a Diels-Alder reaction. The invention may be advantageous for forming underground structures useful in the extraction of hydrocarbons.

Abstract: A non-aqueous slurry contains a non-aqueous liquid immiscible in water (such as a hydrocarbon based oil) having dispersed therein a crosslinking agent (such as a borate crosslinking agent) and an oil-wetting surface active material. The non-aqueous slurry further contains an organophilic clay. The non-aqueous slurry, when used in an aqueous fracturing fluid, provides crosslinking delay between the crosslinking agent and a hydratable polymer, such as guar or guar derivatives. The aqueous fracturing fluid provides an enhanced fracture network after being pumped into a well.