摘要:
An apparatus for testing a rheological property of a fluid with a particulate includes: (a) a receptacle having a cylindrical side wall enclosed by a bottom wall defining a cavity for receiving a fluid to be tested; (b) an axial support adapted to be positioned in the cavity of the receptacle, whereby relative rotational motion can be imparted to the receptacle and the axial support; (c) at least one inward projection extending inward from an inside surface of the receptacle; (d) at least one outward projection extending outward from the axial support; and (e) at least one projection for directing fluid flow that has at least one major surface angled or curved upward. A method of testing a Theological property of a fluid with a particulate includes: (a) placing a sample of the fluid and the particulate in the apparatus; (b) imparting relative rotational motion to the receptacle and the axial support; and (c) measuring the torque between the receptacle and the axial support. A method of fracturing a subterranean formation penetrated by a well includes: (a) placing a sample of a fracturing fluid and a particulate in the apparatus; (b) imparting relative rotational motion to the receptacle and the axial support; (c) measuring the torque between the receptacle and the axial support; (d) adjusting the conditions for mixing the fracturing fluid and the particulate in response to the measured torque; and (e) injecting the fluid and particulate into the well at a sufficient rate and pressure to fracture the formation.
摘要:
The invention provides a method for producing guar gum, the method comprising the steps of: (a) sizing husk from guar seed into larger pieces and smaller pieces, (b) washing the larger pieces, (c) soaking the larger pieces, and (d) flaking the larger pieces to obtain guar gum. The invention also provides a method for processing undehusked guar splits, the method comprising the steps of: (a) dehusking undehusked guar splits to obtain dehusked guar splits and husk, and (b) sizing the husk into larger pieces and smaller pieces. The invention further provides a method for treating a subterranean formation penetrated by a wellbore, wherein the method comprises the steps of: (a) sizing husk from guar seed into larger pieces and smaller pieces; (b) washing the larger pieces; (c) soaking the larger pieces; (d) flaking the larger pieces to obtain guar gum flakes; (e) grinding the guar gum flakes to obtain guar gum powder; (f) forming a well treatment fluid, wherein the well treatment fluid comprises an aqueous fluid and the guar gum powder; and (g) introducing the well treatment fluid through the wellbore into the subterranean formation.
摘要:
Methods comprising for pricing and scheduling one or more well services comprising obtaining input data for the one or more well services, determining the well service specifications, determining a schedule for the one or more well services, determining costs for the one or more well services, and determining the price of the one or more well services based on a plurality of factors, wherein the plurality of factors comprises the schedule and the costs. Methods comprising for pricing and scheduling one or more well services comprising obtaining input data for the one or more well services, the input data comprising well characteristics of the one or more well service, determining a schedule for the one or more well services, determining the price of the one or more well service based on a plurality of factors, wherein the plurality of factors comprises the schedule and the well characteristics.
摘要:
A system and method to model and analyze the mixing energies of high-yielding non-Newtonian fluids to prevent chemical lost circulation is disclosed. Laboratory tests are preformed under varying conditions from which data on the mixing energies needed to optimize the use of high-yielding non-Newtonian fluids to prevent lost circulation is obtained. This data is then applied to a non-linear mathematical modeling system that is capable of scaling the data to give a dimensionless value. This value can be combined with historic information to predict optimal flow rates and mixtures to prevent chemical lost circulation. This data may be verified by means of simulation, lab testing, or application to a full-size well.
摘要:
A system and method to model and analyze the mixing energies of high-yielding non-Newtonian fluids to prevent chemical lost circulation is disclosed. Laboratory tests are performed under varying conditions from which data on the mixing energies needed to optimize the use of high-yielding non-Newtonian fluids to prevent lost circulation is obtained. This data is then applied to a non-linear mathematical modeling system that is capable of scaling the data to give a dimensionless value. This value can be combined with historic information to predict optimal flow rates and mixtures to prevent chemical lost circulation. This data may be verified by means of simulation, lab testing, or application to a full-size well.
摘要:
A system and method to model and analyze the mixing energies of high-yielding non-Newtonian fluids to prevent chemical lost circulation. Laboratory tests are performed under varying conditions from which data on the mixing energies needed to optimize the use of high-yielding non-Newtonian fluids to prevent lost circulation is obtained. This data is then applied to a non-linear mathematical modeling system that is capable of scaling the data to give a dimensionless value. This value can be combined with historic information to predict optimal flow rates and mixtures to prevent chemical lost circulation. This data may be verified by means of simulation, lab testing, or application to a full-size well.
摘要:
A system and method to model and analyze the mixing energies of high-yielding non-Newtonian fluids to prevent chemical lost circulation is disclosed. Laboratory tests are preformed under varying conditions from which data on the mixing energies needed to optimize the use of high-yielding non-Newtonian fluids to prevent lost circulation is obtained. This data is then applied to a non-linear mathematical modeling system that is capable of scaling the data to give a dimensionless value. This value can be combined with historic information to predict optimal flow rates and mixtures to prevent chemical lost circulation. This data may be verified by means of simulation, lab testing, or application to a full-size well.
摘要:
A method of servicing a wellbore comprising placing in the wellbore a composition comprising a calcium aluminate cement and at least one gelation inhibitor, and allowing the composition to set. A method of servicing a wellbore comprising adjusting the thickening time of calcium aluminate cement by contacting the cement with a salt and a gelation inhibitor, wherein the gelation inhibitor comprises a copolymer comprising one or more sulfonated aromatic monomers and one or more acrylate monomers, placing the cement in the wellbore, and allowing the cement to set. A method of servicing a wellbore comprising preventing premature gelation of calcium aluminate cement by contacting the calcium aluminate cement with a gelation inhibitor comprising a copolymer, wherein the copolymer comprises alkylbenzene sulfonic acid, at least one methallyl sulfonic acid monomer, at least one copolymerizable nonionic monomer, and at least one copolymerizable olefinically unsaturated carboxylic acid monomer, placing the cement in the wellbore, and allowing the cement to set.
摘要:
Additives for use in treatment operations, and more particularly, additives that include maltodextrin, are provided. An example of an additive is a well fluid additive for use in a subterranean formation that includes maltodextrin. Another example of an additive is a well fluid additive for use in a subterranean formation that includes maltodextrin and an organic acid. Another example of an additive is a well fluid additive for use in a subterranean formation that includes maltodextrin and tartaric acid.
摘要:
Density-reducing additives comprising low-density particulates, and cement compositions comprising such additives, are provided. In one embodiment, the present invention provides a cement composition comprising: a cement component; a density-reducing additive comprising particulates that comprise an agglomerating material; and a base fluid.