公开(公告)号：US3840352A

公开(公告)日：1974-10-08

申请号：US25803072

申请日：1972-05-30

Applicant: UNION OIL CO

Inventor： SCHEFFEL J

IPC: C10L1/14 ,  C10L1/16 ,  C10L1/18

CPC classification number: C10L1/14 ,  C10L1/143 ,  C10L1/1608 ,  C10L1/1616 ,  C10L1/1963 ,  C10L1/1973

Abstract: A low pour point additive composition comprising an admixture of about 1 to 20 weight percent of a copolymer of ethylene and a monoethylenically unsaturated ester, about 5 to 25 weight percent liquid monohydroxy phenols, and at least about 55 weight percent of a hydrocarbon solvent containing a substantial proportion of cyclic hydrocarbon compounds. A method for treating high pour point, wax-containing oil to inhibit the deposition of wax from the oil and to facilitate storage and pipeline transportation of the oil at ambient temperatures below the normal pour point of the wax-containing oil wherein the additive composition is admixed into the wax-containing oil to provide therein an effective concentration of the copolymer between about 5 to 10,000 ppm.

公开(公告)号：US3717204A

公开(公告)日：1973-02-20

申请号：US3717204D

申请日：1971-07-06

Applicant: UNION OIL CO

Inventor： SCHEFFEL J ,  FISCHER P

IPC: C09K8/02 ,  C09K8/508 ,  C09K8/516 ,  C09K8/70 ,  C09K8/92 ,  C08F21/04 ,  C08F45/52

CPC classification number: C09K8/70 ,  C09K8/02 ,  C09K8/5083 ,  C09K8/516 ,  Y10S507/922 ,  Y10S507/925

Abstract: A WATER-INSOLUBLE PARTICULATE COMPOSITION HAVING CONTROLLED SLOW OIL-SOLUBILITY AT ELEVATED TEMPERATURES IS DISCLOSED. THE COMPOSITION IS COMPRISED OF SOLID PARTICLES OF HOMOGENEOUS MIXTURE OF (1) ABOUT 2 TO 15 WEIGHT PERCENT OF A POLYMER SELECTED FROM THE CLASS CONSISTING OF POLYETHYLENE AND ETHYLENE-VINYL ACETATE CONTAINING ABOUT 15 TO 30 WEIGHT PERCENT VINYL ACETATE, OR A COMBINATION OF BOTH. (2) ABOUT 75 TO 90 WEIGHT PERCENT OF A PARAFFIN WAX HAVING A MELTING POINT BETWEEN ABOUT 130*F. AND 175* F., AND (3) ABOUT 1 TO 20 WEIGHT PERCENT OF A SOLUBILITY RETARDING AGENT SELECTED FROM THE GROUP CONSISTING OF LONG CHAIN ALIPHATIC HYDROCARBONS, ALIPHATIC AMIDES AND OXIDIzED HYDROCARBON WAXES MELTING AT A TEMPERATURE BETWEEN ABOUT 250*F, AND 325*F. ALSO DISCLOSED IS A PROCESS EMPLOYING THIS PARTICULATE COMPOSITION IN DRILLING WELLS INTO HIGH-TEMPERATURE SUBTERRANEAN FORMATIONS, AND IN FRACTURING AND TREATING SUCH FORMATIONS.