摘要:
COMPOSITIONS ARE PROVIDED FOR USE IN SUBTERRANEAN FORMATIONS FROM WHICH OIL OR GAS MAH BE PRODUCED, WHICH WILL PREFERNTIALLY DISSOLVE THE HEAVY REFRACTORY ORGANIC MATERIALS PRESENT IN THE FORMATION. THE COMPOSITION INCLUDES A THICKENING AGENT SUCH AS HYDROXYETHYLCELLULOSE DISSOLVED IN FRESH WATER, A CARRYING AGENT SUCH AS ALCOHOL, A SOLVENT FOR THE REFRACTORY MATERIALS, SUCH AS XYLENE, AND OPTIONALLY TYING AGENT SUCH AS DIMETHYLSULFOXIDE. METHODS FOR STIMULATION OF WELLS ARE PROVIDED, UTILIZING SUCH COMPOSTIONS.
摘要:
The permeability of a subterranean formation is improved by introducing into the formation a water-in-oil emulsion. Unwanted particulates deposited in the formation during the production of oil are dissolved or loosened by the outer phase of the emulsion and dispersed in the aqueous phase.
摘要:
A method for cleaning oil wells to increase the flow of oil thereof by use of a unique aqueous cleaning emulsion comprising of water, hydrocarbon solvent, and detergent. This one step method provides for the simultaneously cleaning/removal of asphaltene and/or paraffin and scale. This method can be used alone or with the assistance of a wash tool which is a combination pressure and surge wash tool having a nipple assembly. A by-pass port is coupled to the nipple assembly and a diverter cup is coupled to the by-pass port. A plurality of pressure wash cups are positioned on the tool. A pressure wash port is located between the plurality of pressure wash cups and a pump shoe assembly is coupled to a bottom pressure wash cup.
摘要:
Of the many compositions and methods provided herein, one method includes a method comprising: contacting tar resident in a well bore with a treatment fluid comprising a styrene-acrylate polymer; and allowing the styrene-acrylate polymer to interact with the tar to at least partially reduce the tendency of the tar to adhere to a surface. Another method provided herein includes a method for treating tar sand comprising: contacting the tar sand with a treatment fluid comprising an aqueous fluid and a styrene-acrylate polymer, the tar sand comprising tar and sand; and allowing the styrene-acrylate polymers to interact with the tar to at least partially separate the tar from the sand.
摘要:
Fluid producing wells may be treated with a water-in-oil emulsion for the removal or inhibition of unwanted solid particulates, including pipe dope, asphaltenes and paraffins. Such emulsions are of particular applicability in the displacement of oil base drilling muds and/or residues from such muds from producing wells. The water-in-oil emulsions may optionally contain a dispersing agent as well as a surfactant.
摘要:
Fluid producing wells may be treated with a water-in-oil emulsion for the removal or inhibition of unwanted solid particulates, including pipe dope, asphaltenes and paraffins. Such emulsions are of particular applicability in the displacement of oil base drilling muds and/or residues from such muds from producing wells. The water-in-oil emulsions may optionally contain a dispersing agent as well as a surfactant.
摘要:
The present invention relates to methods and compositions for use in subterranean operations. More particularly, the present invention relates to additives comprising one or more silicates used to treat tar resident in a well bore, and methods of use. In one embodiment, the present invention provides a method of treating tar resident in a well bore comprising providing a tar-treating additive comprising one or more silicates introducing the tar-treating additive into the well bore; and allowing the tar-treating additive to react with the tar resident in the well bore so as to at least partially reduce the adhesiveness of the tar.
摘要:
An oil well capsule to reduce the paraffin and asphaltene which accumulate on the walls of the pipes which are used to bring the oil up from underground deposits, and a method of using the oil well capsule. An oil well capsule having a shell encapsulating a chemically active mass wherein the chemically active mass consists essentially of alkaline or alkaline earth metal.