Method of treating a well bore in connection with electric logging of subsurface formation
This patent describes a method of treating a well bore in connection with the electric logging of a subsurface formation penetrated by the well bore. It comprises: displacing fluid in the portion of the well bore penetrating the subsurface formation with a readily flowable liquid composition of relatively low viscosity. The liquid composition being capable of gelling to a highly viscous moderately flowing state; causing some of the liquid composition to enter the formation immediately adjoining the portion of the well bore; allowing the liquid composition to gel to the extent whereby the gel in the adjoining formation prevents entry of crude oil and formation water into the well bore and the gel in the well bore permits electric logging equipment to be moved therethrough; logging the subsurface formation with electric logging equipment moved through the gel; causing the gel to revert to readily flowable liquid form; and removing the readily flowable liquid from the well bore.
- Assignee:
- Marathon Oil Co., Findlay, OH (USA)
- Patent Number(s):
- US 4950995; A
- Application Number:
- PPN: US s 7-332255
- OSTI ID:
- 6594280
- Resource Relation:
- Patent File Date: 31 Mar 1989
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
03 NATURAL GAS
42 ENGINEERING
BOREHOLES
ELECTRIC LOGGING
DISPLACEMENT FLUIDS
CHEMICAL COMPOSITION
SUBSURFACE STRUCTURES
FLUID FLOW
GELS
NATURAL GAS WELLS
OIL WELLS
PETROLEUM
VISCOSITY
CAVITIES
COLLOIDS
DISPERSIONS
ENERGY SOURCES
FLUIDS
FOSSIL FUELS
FUELS
WELL LOGGING
WELLS
020200* - Petroleum- Reserves
Geology
& Exploration
030200 - Natural Gas- Reserves
Geology
& Exploration
023000 - Petroleum- Properties & Composition
420400 - Engineering- Heat Transfer & Fluid Flow