Raymond F. Mikolajczyk
Engineering at Pierre Washington Rd, Broussard, LA

6012529, Jan 11, 2000

Jun 22, 1998

9/102480

Raymond F. Mikolajczyk - Broussard LA
Michael R. Mikolajczyk - Lafayette LA

E21B 704, E21B 1710

166349

A downhole casing guide member comprising a structure having a unitary formation wherein in a plane perpendicular to a center longitudinal axis of the structure, the unitary formation is generally "Y" shaped in two opposite directions about the center longitudinal axis. The downhole casing guide member further comprises at least one clamping bracket member securable to the structure. The unitary formation of the structure serves to maximize available flow area for flow of fluid, liquid slurry and/or cement around the contour of the unitary formation and maximize the diameters of casing strings which may be run within a conductor casing; and tapered upper and lower shoulders on the casing guide member ease passage of the guide member into and out of a conductor casing. Further, the overall configuration and shape of the downhole guide member eases passage of casing strings lowered into or removed from the conduits formed by the guide member.

6209638, Apr 3, 2001

Apr 30, 1999

9/303478

Raymond F. Mikolajczyk - Broussard LA

E21B 1710

1662411

Casing accessory equipment especially adapted for restricted diameter applications. The present invention comprises casing accessory equipment, including casing string centralizers, float shoes and float collars, comprising a tubular member having a recessed central section with enlarged diameter end sections. A bow spring centralizer comprising two spaced apart bands connected by a plurality of circumferentially positioned bow spring blades is mounted in the central section. A plurality of lugs are disposed on the recessed central section. Windows in the bands fit over the lugs, restraining rotational and longitudinal movement of the bow spring centralizer within the central recessed section. The bow spring centralizer may collapse to a diameter substantially equal to the diameter of the enlarged end sections, and in the collapsed position retains some longitudinal movement within the central recessed section. In the float shoe and float collar, a cast insert and one way valve in the float shoe and float collar permits fluid pump-through, while preventing fluid flowback.

4825947, May 2, 1989

Feb 11, 1988

7/154930

Raymond F. Mikolajczyk - Broussard LA

E21B 1710, E21B 3314

166241

There is disclosed apparatus either in the form of a float shoe or float collar for use in cementing a casing string within a well bore, the shoe or collar having blades extending longitudinally along the outer side thereof for centering the shoe or collar, and thus the lower end of the casing string, within the well bore.

6945326, Sep 20, 2005

Dec 3, 2002

10/308626

Raymond F. Mikolajczyk - Broussard LA, US

E21B033/16

166153

A non-rotating cement wiper plug has an insert, with inner and outer telescoping sleeves, within a resilient outer body. The outer body has annular fins which bear against a casing wall. The inner sleeve has a tapering nose within a tapered cavity in the outer sleeve. Slots in the outer sleeve form a plurality of segments. The inner and outer sleeves are preferably of a frangible material. When the plug is pumped down and lodges against downhole float equipment, pump pressure compresses the plug, forces the inner sleeve down within the outer sleeve, forces the segments radially outward, and fractures or separates the outer sleeve segments. The outer body is forced against the casing wall so tightly that it cannot rotate in response to the forces from a rotary drill bit. Lock surfaces on the inner and outer sleeves lock them together and maintain the outer body in its forced-outwardly position.

4416547, Nov 22, 1983

Jan 28, 1982

6/343443

Raymond F. Mikolajczyk - Broussard LA

B01F 1502

366150

Support means support an upright hopper means and mixing hopper means. Continuous conveyor means extend from adjacent the lower end of the upright hopper means to adjacent the upper end of the mixing hopper means. Motor means move the conveyor means to carry dry bulk material from the upright hopper means to the mixing hopper means, and control means control the amount of material on the conveyor means as it leaves the upright hopper means. Discharge valve means adjacent the lower end of the valve hopper means communicate with liquid conducting means which is provided with an orifice therein which assists in discharging material from the mixing hopper means into the liquid conducting conduit means.

4787244, Nov 29, 1988

Feb 10, 1988

7/154271

Raymond F. Mikolajczyk - Broussard LA

E21B 4700

73151

A movement measuring device includes circuitry which produces signals functionally related to the amount and direction of movement of a cable or drill line in relation to up and down movement of an object such as pipe and the like in a well bore. A totalizer device is provided with circuitry that is coupled to the movement measuring device to instrumentally display the object depth in the well bore resulting from the signals received from the movement measuring device. A switch is operatively connected to the cable or drill line and a device closes the switch when a predetermined weight or load on the cable or drill line is exceeded to provide power from a power source to the movement measuring device for transmitting the signals therefrom to the totalizer device. The totalizer device continuously displays the total depth of the object in the well bore.