Methods and systems for integral storage and blending of the materials used in oilfield operations are disclosed. A modular integrated material blending and storage system includes a first module comprising a storage unit, a second module comprising a liquid additive storage unit and a pump for maintaining pressure at an outlet of the liquid additive storage unit. The system further includes a third module comprising a pre-gel blender. An output of each of the first module, the second module and the third module is located above a blender and gravity directs the contents of the first module, the second module and the third module to the blender. The system also includes a pump that directs the output of the blender to a desired down hole location. The pump may be powered by natural gas or electricity.

One example of correlating energy to mix well cement slurry under laboratory conditions to field conditions can be implemented as a method to determine energy to mix cement slurry. Electrical power supplied to an electric mixer in mixing a specified well cement slurry is measured. An energy to mix the specified well cement slurry is determined from the measuring. The determined energy to mix the specified well cement slurry and specifications of field equipment for use in mixing the specified well cement slurry at a well site are compared. The field equipment is a different configuration than the electric mixer. Based on the comparing, it is determined whether the well cement slurry needs redesigning according to capabilities of the field equipment.

Fracturing slurries are prepared on the fly using a solids pump to feed the solid such as a gel into a liquid stream of normally water for pumping downhole with a large capacity triplex pump. The solids pump is preferably a Posimetric® style which delivers the solid into the fluid pipeline in a manner that keeps fluid from backing into the solids hopper above the solids pump. A separate fluid tank is connected to a fluid pump to pressurize a suction line to a boost pump before reaching the triplex pump and pumping into the subterranean formation. The solids pump can deliver between the fluid and boost pumps in which case the solids go through the triplex pump or alternatively the solids can be delivered into the higher pressure discharge line of the triplex pump.

An invert oil-based mud (OBM) may include an oleaginous continuous phase, an aqueous internal phase, an emulsifier; and a rheology modifier. The rheology modifier may include one or more of the group consisting of epoxidized methyl oleate, epoxidized methyl linoleate, and epoxidized methyl α-linolenate. The invert OBM may contain the rheology modifier in an amount of the range of 0.1 to 5 wt. % (weight percent) relative to the total weight of the OBM.

A method of monitoring characteristics of a viscosified fluid in a substantially continuous manner. Devices and techniques for such methods include use of an in-line Coriolis flowmeter to continuously circulate a portion of the viscosified fluid therein for analysis as the fluid may be directed to a blender for combining with a constituent such as proppant for forming a fracturing slurry. Devices and techniques herein allow for real-time monitoring and adjustment of the developing viscosified fluid and/or halting of the fracturing application depending on results of the ongoing monitoring.

The invention provides a method, composition, and system for inhibiting sulfide stress cracking of metal that is exposed to aqueous sulfide and aqueous acid, and optionally brine, where the composition comprises cinnamaldehyde, benzaldehyde, lauryl alcohol ethoxylate (23 mol), and dimethylcocoalkylamine oxide.

A system for mixing drilling fluids that includes a fluid supply tank for supplying an unmixed drilling fluid, a mixing reactor fluidly connected to the fluid supply tank, the mixing reactor including an intake and an outlet; a mixing chamber disposed between the intake and the outlet, an inlet for injecting a compressible driving fluid into the mixing chamber and an inlet for injecting an aerating gas into the mixing chamber is disclosed.

Method of selecting an optimum formation stabilization treatment for subterranean formations is described. The methods include obtaining formation material, adding a test fluid to the formation material to form a first mixture, adding the test fluid to the formation material to form a second mixture, agitating the first and second mixtures, measuring capillary suction time of the first mixture, and measuring turbidity of the second mixture.

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.

A method of transmitting a fluid into an oil well bore provides a frame supporting a vessel, the vessel having an interior, upper and lower end portions, a conically shaped side wall, and an outlet for discharging the fluid from the vessel. A viscous polymeric material is added to the vessel interior. A discharge pipe having a vertical section is placed below the vessel, the discharge pipe being in communication with the outlet. A positive displacement pump is contained within the discharge pipe. The pump transmits fluid from the outlet into the discharge pipe downstream of the vertical pipe section or pump. The fluid is selectively transmitted to either the vessel interior (for recirculating) or into the well. Air is added to the discharge flow line downstream of the pump.