1
Joseph U Messenger: Well servicing agents and processes. The Western Company of North America, Richards Harris Medlock & Andrews, April 1, 1986: US04579668 (56 worldwide citation)

Well servicing agents and processes for use with fluids circulated into wells penetrating subterranean formations in the earth's crust. Circulation losses of well servicing fluids including drilling muds, workover and completion fluids, and the like, are alleviated by incorporating a particulate mat ...


2
Joseph U Messenger: Treating wells to mitigate flow-after-cementing. Mobil Oil Corporation, Charles A Huggett, Charles J Speciale, November 25, 1980: US04235291 (41 worldwide citation)

A method of cementing a well drilled into the earth is disclosed wherein there is formed a pumpable thixotropic cement slurry having essentially zero water separation at downhole conditions and being formed of Portland cement, bentonite and water. This cement slurry is injected into a well and allow ...


3
Joseph U Messenger: Arrangement for removing borehole cuttings by reverse circulation with a downhole bit-powered pump. Mobil Oil Corporation, Charles A Huggett, Michael G Gilman, James F Powers Jr, January 18, 1983: US04368787 (38 worldwide citation)

An arrangement for drilling deviated wellbores, such as in extended reach drilling, which is particularly designed to reduce the chance of pressure-differential sticking of the drill string by removing the drilling cuttings from the wellbore bottom by reverse circulation of the drilling fluid using ...


4
Joseph U Messenger: Technique for controlling lost circulation employing improved soft plug. Mobil Oil Corporation, C A Huggett, Henry L Ehrlich, November 13, 1979: US04173999 (32 worldwide citation)

This specification discloses a method of controlling the loss of drilling fluid into a lost circulation zone of a subterranean earth formation penetrated by a well. A nonaqueous slurry of a hydratable material and an oleophilic clay is introduced into the well and mixed in the vicinity of the lost c ...


5
Joseph U Messenger: Well cementing process using presheared water swellable clays. Mobil Oil Corporation, Charles A Huggett, Raymond W Barclay, Charles J Speciale, May 13, 1980: US04202413 (29 worldwide citation)

A method of preparing and using a cement slurry having water swellable clays therein as extenders for the cement is described, which method enhances the effectiveness of the water swellable clays by preshearing aqueous suspensions thereof prior to mixing these suspensions with cement to form a pumpa ...


6
Joseph U Messenger: Well cementing method employing an oil base preflush. Mobil Oil Corporation, William J Scherback, William D Jackson, Henry L Ehrlich, September 5, 1972: US3688845 (22 worldwide citation)

This specification discloses a method of cementing casing in a well having an oil base drilling mud therein. A preflush solution comprised of an oil and a dispersant, which preflush solution has a lower viscosity and a lower gel strength than the drilling mud in the well, is flowed through the annul ...


7
Joseph U Messenger: Technique for cementing casing in an offshore well to seafloor. Mobil Oil Corporation, C A Huggett, Henry L Ehrlich, March 4, 1980: US04191250 (16 worldwide citation)

This specification discloses a method and system for cementing a casing string with returns to the seafloor in an offshore wellbore. The hydrostatic pressure at a preselected point within the annulus formed intermediate the casing string and the wellbore wall is monitored during a cementing operatio ...


8
Joseph U Messenger: Treating wells to mitigate flow-after-cementing. Mobil Oil Corporation, C A Huggett, Henry L Ehrlich, October 17, 1978: US04120360 (14 worldwide citation)

This specification discloses a method of treating a well drilled into the earth. In carrying out this method there is formed a lightweight thixotropic cement slurry that is comprised of a low density calcined shale cement, attapulgite and water, in ratios to provide a pumpable slurry that has zero w ...


9
Joseph U Messenger: Use of oil-wetting spacers in cementing against evaporites. Mobil Oil Corporation, C A Huggett, Henry L Ehrlich, November 7, 1978: US04124075 (13 worldwide citation)

This specification discloses a method of cementing pipe in a well and discloses the use of a designed oil-wetting liquid and cement slurry for cementing pipe against evaporite sections penetrated by the well. The cement slurry is formulated from hydraulic cement, silica flour, ionization control age ...


10
Joseph U Messenger: Drilling technique. Mobil Oil Corporation, C A Huggett, Henry L Ehrlich, William J Scherback, March 25, 1980: US04194580 (12 worldwide citation)

This specification discloses a technique of providing a wellbore that extends from a surface location to a subsurface location in a mineral bearing formation which subsurface location is spaced a great lateral distance from the surface location. The wellbore is provided to have a first portion that ...