Polymeric diverting agent
A water-insoluble particulate composition having controlled slow oil solubility at temperatures in excess of 350/sup 0/F is disclosed. The composition is comprised of solid particles of a homogeneous mixture of (1) polyethylene, ethylene-vinyl acetate copolymer containing about 15 to 30% by wt vinyl acetate, or admixtures of these polymers; (2) a polyamide having a melting point of between about 400/sup 0/ and 460/sup 0/F; and (3) a softening agent such as a long chain aliphatic diamide having a melting point between about 280/sup 0/ and 300/sup 0/F, or a polyterpene resin having a melting point of between 230/sup 0/ and 275/sup 0/F. Also disclosed is a method of using this particulate composition in well drilling and treating operations where formation temperatures of 350/sup 0/F or above are encountered. (6 claims)
- Assignee:
- Union Oil Co California
- Patent Number(s):
- US 3954629
- OSTI ID:
- 6596322
- Resource Relation:
- Patent File Date: Filed date 3 Jun 1974; Other Information: PAT-APPL-475-511
- Country of Publication:
- United States
- Language:
- English
Similar Records
Method and composition for treating high-temperature subterranean formations
HIGH POLYMERIC MATERIALS. Period covered : January 1, 1958 and January 31, 1959
Related Subjects
02 PETROLEUM
PETROLEUM
SOLUBILITY
POLYMERS
CHEMICAL COMPOSITION
USES
PARTICULATES
RESERVOIR TEMPERATURE
TEMPERATURE EFFECTS
WELL DRILLING
DRILLING
ENERGY SOURCES
FOSSIL FUELS
FUELS
PARTICLES
360401* - Polymers & Plastics- Preparation & Fabrication- (-1987)
020300 - Petroleum- Drilling & Production