| US 7,541,315 B2 | ||
| Paraffin inhibitor compositions and their use in oil and gas production | ||
| David Wayne Jennings, Houston, Tex. (US) | ||
| Assigned to Baker Hughes Incorporated, Houston, Tex. (US) | ||
| Filed on May 14, 2007, as Appl. No. 11/747,982. | ||
| Application 11/747982 is a continuation in part of application No. 10/659914, filed on Sep. 11, 2003, abandoned. | ||
| Prior Publication US 2007/0213231 A1, Sep. 13, 2007 | ||
| Int. Cl. C09K 8/524 (2006.01); E21B 43/22 (2006.01) | ||
| U.S. Cl. 507—90 [507/118; 507/119; 507/129; 507/134; 507/137; 507/138; 507/220; 507/221; 507/256; 507/262; 166/304] | 17 Claims |
| 1. A method for treating formation fluid from an oil and gas well comprising admixing a paraffin inhibitor composition with
a formation fluid wherein the paraffin inhibitor composition consists essentially of:
(a) a polymer having the characteristic of inhibiting paraffin crystalline growth;
(b) a first solvent selected from benzene, toluene, xylene, ethyl benzene, propyl benzene, trimethyl benzene and mixtures
thereof; and
(c) a second solvent selected from cyclopentane, cyclohexane, carbon disulfide, decalin and mixtures thereof;
wherein component (a) is dissolved in an admixture of components (b) and (c); wherein the polymer having the characteristic
of inhibiting paraffin crystalline growth in formation fluid is selected from the group consisting of olefin/maleic esters,
olefin/maleic imides, ethylene vinyl acetates, alky phenol resins, alkyl acrylates, and mixtures thereof, and wherein the
weight ratio of the first solvent to the second solvent is from about 6:1 to about 1:6.
|