Systems and methods for the treatment of oil and/or gas wells with a polymeric material
First Claim
1. A method, comprising:
- treating a well in a hydrocarbon bearing formation with a first fluid comprising a first microemulsion before treating the well with a second fluid comprising an obstruction material, wherein a drive fluid is present in the well before treating the well with the first fluid,wherein the first fluid comprising the first microemulsion reduces a volume of residual hydrocarbon in high permeability regions of the well and an amount of the residual hydrocarbon on surfaces of hydrocarbon bearing structures in the high permeability regions of the well thereby creating additional bondable surface area for the obstruction material; and
treating the well with a third fluid comprising a second microemulsion following treating the well with the first fluid and the second fluid,wherein the first microemulsion and the second microemulsion are homogeneous thermodynamically stable single phases; and
wherein the first microemulsion and the second microemulsion comprise a surfactant selected from the group consisting of cationic surfactants, nonionic surfactants and zwitterionic surfactants.
2 Assignments
0 Petitions
Accused Products
Abstract
Systems and methods for the treatment of oil and/or gas wells are generally provided. In some embodiments, a reservoir comprising oil and/or gas may contain regions that differ in permeability to the drive fluid used to displace the oil and/or gas. The higher permeability region(s) may limit oil and/or gas recovery from lower permeability regions. A method of enhancing oil and/or gas recovery in such a reservoir may comprise injecting a fluid comprising a microemulsion into the reservoir prior to obstructing one or more region (e.g., higher permeability regions) of the reservoir. The use of a microemulsion prior to obstructing one or more region of the reservoir may enhance the barrier properties of the resulting obstruction. In some embodiments, injecting a fluid comprising a microemulsion into the reservoir may also increase the overall production of the oil and/or gas well lacking the microemulsion treatment.
276 Citations
30 Claims
-
1. A method, comprising:
-
treating a well in a hydrocarbon bearing formation with a first fluid comprising a first microemulsion before treating the well with a second fluid comprising an obstruction material, wherein a drive fluid is present in the well before treating the well with the first fluid, wherein the first fluid comprising the first microemulsion reduces a volume of residual hydrocarbon in high permeability regions of the well and an amount of the residual hydrocarbon on surfaces of hydrocarbon bearing structures in the high permeability regions of the well thereby creating additional bondable surface area for the obstruction material; and treating the well with a third fluid comprising a second microemulsion following treating the well with the first fluid and the second fluid, wherein the first microemulsion and the second microemulsion are homogeneous thermodynamically stable single phases; and wherein the first microemulsion and the second microemulsion comprise a surfactant selected from the group consisting of cationic surfactants, nonionic surfactants and zwitterionic surfactants. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22)
-
-
23. A method, comprising:
-
treating a well in a hydrocarbon bearing formation with a first fluid comprising a first microemulsion, wherein a fluid is present in the well before treating the well with the first fluid, wherein the viscosity of the fluid present in the well is reduced following treating the well with the first fluid, and wherein the first fluid comprising the first microemulsion reduces a volume of residual hydrocarbon in high permeability regions of the well and an amount of the residual hydrocarbon on surfaces of hydrocarbon bearing structures in the high permeability regions of the well thereby creating additional bondable surface area for the obstruction material; treating the well with a second fluid comprising a polymeric material; and treating the well with a third fluid comprising a second microemulsion following treating the well with the second fluid, wherein the first microemulsion and the second microemulsion are homogeneous thermodynamically stable single phases; and wherein the first microemulsion and the second microemulsion comprise a surfactant selected from the group consisting of cationic surfactants, nonionic surfactants and zwitterionic surfactants. - View Dependent Claims (24, 25, 26, 27, 28, 29, 30)
-
Specification