Terry Andre Frazier

US Patent:

42237270, Sep 23, 1980

Filed:

Jun 22, 1979

Appl. No.:

6/051094

Inventors:

Alvin J. Sustek - Houston TX
Terry L. Frazier - Houston TX

Assignee:

Texaco Inc. - White Plains NY

International Classification:

E21B 4700
E21B 4900

US Classification:

166250

Abstract:

Fluid injectivity within an interval in a well bore is determined by injecting into the well two fluid streams, one of which flows down the tubing and one of which flows down the annulus, each of said fluid streams containing a different radioactive tracer. The fluid stream injected into the tubing contains a radioactive tracer that is soluble almost exclusively in the liquid phase of the fluid, while the annulus fluid stream contains a radioactive tracer soluble almost exclusively in the gas phase of the fluid. The sum of the two fluid flow rates is held constant while each flow rate is varied against the other. At each different pair of flow rates, stable interfaces will be formed between the gas phase in the tubing and the gas phase from the annulus as well as the liquid phase in the tubing and the liquid phase from the annulus. The position of these stable interfaces at each different set of fluid flow rates is measured by a conventional gamma ray well logging tool, and from the series of such measurements an injectivity log for both fluid phases over the measured interval can be determined.

US Patent:

42288550, Oct 21, 1980

Filed:

Jun 22, 1979

Appl. No.:

6/051074

Inventors:

Alvin J. Sustek - Houston TX
Terry L. Frazier - Houston TX
Gregory Daryl - Woodlands TX

Assignee:

Texaco Inc. - White Plains NY

International Classification:

E21B 4700
E21B 4900

US Classification:

166250

Abstract:

Fluid injectivity within an interval in a well bore is determined by injecting into the well two fluid streams, one of which flows down the tubing and one of which flows down the annulus, one of said fluid streams containing a radioactive tracer. The sum of the two fluid flow rates is held constant while each flow rate is varied against the other. At each different pair of flow rates, a stable interface is formed between the fluid containing the radioactive tracer and the fluid without it. The position of this stable interface at each different set of fluid flow rates is measured by a conventional gamma ray well logging tool, and from the series of such measurements an injectivity log over the measured interval can be determined. The injectivity profiles for the two components of a two phase fluid flow system are determined by conducting the survey with a radioactive tracer soluble in the gas phase and repeating the survey with a radioactive tracer soluble in the liquid phase.

US Patent:

47367920, Apr 12, 1988

Filed:

Dec 30, 1986

Appl. No.:

6/947932

Inventors:

Alfred Brown - Houston TX
Donald S. Mims - Houston TX
Christopher M. Lonvick - Houston TX
Terry L. Frazier - Ventura CA

Assignee:

Texaco Inc. - White Plains NY

International Classification:

E21B 4324
E21B 4706

US Classification:

166252

Abstract:

Our invention concerns a method for treating a well completed in a subterranean petroleum containing formation which will improve the rate at which steam can be injected into the formation for a steam push-pull or steam drive oil recovery method. This preconditioning process is applied to formations exhibiting very limited steam receptivity because the formation contains high oil viscosity and has high oil saturation and is completely liquid filled. The method involves injecting a heated non-condensable and oil soluble gas all in the gaseous phase into the formation at a controlled rate which will avoid permanently fracturing the formation and also avoid the immediate formation of an oil bank due to dissolution of the injected gaseous fluid into the oil. Ideally by controlling the injection rate, carbon dioxide first displaces water from the flow channels and then slowly dissolves in the oil. Steam injection can then be applied to the formation without the previously experienced loss in steam injectivity.

US Patent:

45429936, Sep 24, 1985

Filed:

Sep 9, 1983

Appl. No.:

6/530844

Inventors:

Donald S. Mims - Houston TX
Terry L. Frazier - Paso Robles CA

Assignee:

Texaco Inc. - White Plains NY

International Classification:

G01K 1706
G01N 2560

US Classification:

374 42

Abstract:

A method for determining the quality of steam flowing in a line used for steam injection, e. g. in an oil well. It has a vertical loop in the line, with an orifice in the up-flow side. The pressure, temperature and pressure drop at the orifice are measured before and after injecting a stream of water upstream from the orifice. The water stream is injected at a constant flow rate, and its temperature and pressure are measured. Using the measurements before and after the introduction of the water stream, simultaneous equations are developed related to the mass flow rate and to the heat flow rate, so that the steam quality may be determined.

US Patent:

42496047, Feb 10, 1981

Filed:

May 23, 1979

Appl. No.:

6/041836

Inventors:

Terry L. Frazier - Houston TX

Assignee:

Texaco Inc. - White Plains NY

International Classification:

E21B 4324
E21B 4330

US Classification:

166263

Abstract:

High viscosity petroleum, such as heavy oils and tar, is recovered by first drilling a number of production wells in a conventional pattern, then drilling a plurality directionally drilled injection wells extending radially inward toward each producing well, such that the surface location of each injection well is not less than the normal spacing between production wells, and the bottom hole location approaches the production well closely enough that fluid communication between the two wells can be established by the injection of heated fluids into the injection well. The petroleum is then recovered from the producing well by conventional thermal means.