Trican Well Service Ltd. | Date: 2016-08-29
Cement composition suitable for cementing a well and method of preparing the cement composition are disclosed. The cement composition has cement, water and biodegradable polymeric elastomeric resin (BPR) as an additive. The BPR has a significantly lower elastic modulus than that of set cement. Other additives such as bond enhancer and/or foaming agent may also be used.
Trican Well Service Ltd. | Date: 2016-11-01
An aqueous slurry composition for use in industries such as petroleum and pipeline industries that includes: a particulate, an aqueous carrier fluid, a chemical compound that renders the particulate surface hydrophobic, and a small amount of an oil. The slurry is produced by rendering the surface of the particulate hydrophobic during or before the making of the slurry. The addition of the oil greatly enhances the aggregation potential of the hydrophobically modified particulates once placed in the well bore.
Trican Well Service Ltd. | Date: 2016-11-25
An aqueous slurry composition for use in industries such as petroleum and pipeline industries comprises an aqueous liquid, particulates, a hydrophobizing agent that renders the particulate surface hydrophobic and a hydrophobic polymer. The slurry is produced by rendering the surface of the particulate hydrophobic during or prior to making the slurry. The method and composition can find many applications in different industries, particularly in petroleum industry.
Trican Well Service Ltd. | Date: 2015-03-05
A coil tubing purging system is disclosed having coil tubing; an on-site source of a gaseous hydrocarbon fluid, said gaseous source being coupled to a first end of the coil tubing for injecting the gaseous fluid into the coil tubing for purging; and a sink coupled to a second end of the coil tubing for receiving fluid discharged therefrom.
Trican Well Service Ltd. | Date: 2015-11-13
By adding a lignosulfonate preferably magnesium lignosulfonate to water and subjecting the mixture to shear a viscous fluid is created. The lignosulfonate increases the viscosity of the water at least to the point where the fluid is viscous enough to maintain the cement in a solution without free water yet not so viscous as to prevent the pumps from moving the viscous fluid slurry and thereby damaging the pumps. The fluid is sufficiently viscous to enable the fluid to conduct the cement slurry through the wellbore and into the formation without duning or otherwise allowing the cement to settle out. Additionally the fluid continues to remain viscous and retain the cement in slurry at temperatures in excess of 225 F.
Trican Well Service Ltd. | Date: 2015-07-07
A well fluid treatment is disclosed that utilizes ethoxylated alcohols with a hydrophilic lipophilic balance between 10 and 13 and/or alkyl benzene sulfonic acid and alkyl naphthalene sulfonic acids either neutralized or non-neutralized and salts thereof either singly or in combination to assist in suspending solids such as drilling mud and cement in fluids such as water.
Trican Well Service Ltd. | Date: 2016-09-29
A treatment to temporarily block highly permeable areas in a wellbore having a temperature of less than 160 F. A diverting agent, a catalyzer, and a viscosifier are mixed together and pumped in the wellbore where the treatment flows in the most highly permeable areas. The diverting agent then begins to block those areas as the well is treated finally causing the fluid to divert to other now more highly permeable areas of the wellbore. After less than 48 hours the diverting agent degrades sufficiently to restore the permeablility of the wellbore.
Trican Well Service Ltd. | Date: 2016-01-29
Described is a proppant composition comprising particulates coated with a polymeric coating comprising a polymerizable natural oil, and a method of making this composition. The polymerizable natural oil is a glyceryl ester that comprises greater than about 40% by weight of polyunsaturated fatty acids, or a derivative of this ester. The proppant composition is made by mixing particulates with a polymerizable natural oil and polymerizing the polymerizable natural oil to coat the surface of the particulates with polymer comprising polymerized natural oil. The composition may be used in a slurry that is used for hydraulic fracturing operations to improve proppant transportation and to mitigate proppant flowback.
Trican Well Service Ltd. | Date: 2016-11-02
A pressure equalization valve for a treatment tool (51) movable in a completion string (12). The valve comprises a cylindrical valve body having an axial bore (110) in fluid communication with the treatment tool (51). A cylindrical shuttle (112) is provided axially and sealably movable in the axial bore (110). The shuttle (112) is operable between a closed position and an open position. When a flow rate of the fluid flowing from the treatment tool (51) exceeds a preset rate to overcome the spring (114) biasing, the shuttle (112) shifts to the closed position. When the flow rate from the treatment tool (51) drops below the preset rate, the shuttle (112) is biased to the open position.
Trican Well Service Ltd. | Date: 2016-01-11
A proppant slurry is formed by lifting dry proppant using one or more augers and distributing an additive to modify the dry proppant as it falls from the top of the augers into a blender tub. Water is added to the blender tub and the modified proppant for forming the proppant slurry. The additive hydrophobically modifies surfaces of the proppant, typically sand, to produce stable proppant/bubble aggregations for forming proppant packs when introduced into formation fractures. The additive is distributed using main spray nozzles directed downwardly onto the falling proppant in a direction of fall of the proppant. Auxiliary spray nozzles protrude upwards into the proppant and distribute additive within and beneath the falling proppant and in a direction of travel thereat. Spray orifices further distribute additive to the falling proppant.