Reginald J Bell

US Patent:

6405809, Jun 18, 2002

Filed:

Jan 10, 2001

Appl. No.:

09/757570

Inventors:

Arvind D. Patel - Sugarland TX
Reginald J. Bell - Houston TX
Burhan Hoxha - Houston TX
Steve Young - Spring TX

Assignee:

M-I LLC - Houston TX

International Classification:

C09K 706

US Classification:

175 50, 7315202, 7315203, 1662542, 507103, 507129, 507131

Abstract:

A method of electrically logging subterranean wells using a conductive fluid includes a miscible combination of an oleaginous fluid, a polar organic solvent, an electrolytic salt, and a carbon dioxide buffer. The electrolytic salt or brine of the salt is present in a concentration sufficient to permit the electrical logging of the subterranean well. The polar organic solvent may be an oil soluble glycol or glycol ether such as ethylene glycol, diethylene glycol, propylene glycol, polypropylene glycol, and the like. The electrolytic salt or brine preferably includes a quaternary amine salt having the formula: wherein R is an alkyl having 8 to 18 carbon atoms, Râ is 2 to 6 carbon atoms alkyl group, B is hydrogen, oxyalkyl having 1 to 4 carbon atoms or alkyl having 1 to 4 carbon atoms, A is hydrogen or alkyl with 1 to 4 carbon atoms, x+y=1 to 15, z is 0 to 3, and M is a counter anion; or combinations thereof. The carbon dioxide buffer is preferably a trialkylanol amine.

US Patent:

6770602, Aug 3, 2004

Filed:

Jan 31, 2002

Appl. No.:

10/062854

Inventors:

Arvind D. Patel - Sugar Land TX
Reginald Bell - Houston TX
Burhan Hoxha - Houston TX
Jim Friedheim - Spring TX

Assignee:

M-I LLC - Houston TX

International Classification:

C09K 706

US Classification:

507130, 507243

Abstract:

A fluid having utility in subterranean wells is formulated to include: an oleaginous fluid; and a solids tolerance agent having the formula: in which R is a C to C aliphatic group and Râ is a C to C aliphatic group and x has a value from about 1 to about 10. Preferably Râ is selected from ethyl and isopropyl and R is an unsaturated aliphatic group. The fluid is formulated such that the oleaginous fluid is from about 30% to about 99% by volume of said fluid. In one illustrative embodiment, the oleaginous fluid is composed from about 5% to about 100% by volume of the oleaginous fluid of a material selected from a group consisting of diesel oil, mineral oil, synthetic oil, esters, ethers, acetals, di-alkylcarbonates, olefins, and combinations of these and similar fluids. A non-oleaginous fluid may also be included in the formulation that is from about 1% to about 70% by volume of said fluid. The non-oleaginous fluid is preferably selected from sea water, a brine containing organic or inorganic dissolved salts, a liquid containing water-miscible organic compounds, and combinations thereof.

US Patent:

6793025, Sep 21, 2004

Filed:

Jun 17, 2002

Appl. No.:

10/172837

Inventors:

Arvind D. Patel - Sugar Land TX
Reginald J. Bell - Houston TX
Steve Young - Spring TX
Ahmadi Tehrani - Banchory, GB

Assignee:

M-I L. L. C. - Houston TX

International Classification:

C09K 706

US Classification:

175 50, 7315202, 7315203, 1662542, 175 65, 507103, 507129, 507130, 507135, 507136, 507240, 507248, 507260, 507904

Abstract:

A method of electrically logging subterranean wells using a conductive double emulsion fluid includes a miscible combination of an oleaginous fluid, an emulsifier capable of forming a microemulsion, an emulsifier capable of forming an invert emulsion, and an electrolytic salt. A microemulsion is the continuous phase of an invert emulsion. The electrolytic salt or brine of the salt is present in a concentration sufficient to permit the electrical logging of the subterranean well. The fluid may additionally contain a polar organic solvent and a carbon dioxide buffer. The polar organic solvent may be an oil soluble glycol or glycol ether such as ethylene glycol, diethylene glycol, propylene glycol, polypropylene glycol, and the like. The electrolytic salt preferably is a quaternary amine salt having the formula: wherein R is an alkyl having 8 to 18 carbon atoms, Râ is 2 to 6 carbon atoms alkyl group, B is hydrogen, oxyalkyl having 1 to 4 carbon atoms or alkyl having 1 to 4 carbon atoms, A is hydrogen or alkyl with 1 to 4 carbon atoms, x+y=1 to 15, z is 0 to 3, and M is a counter anion; or combinations thereof. In such instances the quaternary amine salt serves both as the electrolyte and the microemulsifer.

US Patent:

6828279, Dec 7, 2004

Filed:

Aug 10, 2001

Appl. No.:

09/927619

Inventors:

Arvind D. Patel - Sugarland TX
Burnhan Hoxha - Houston TX
Reginald Bell - Houston TX

Assignee:

M-I LLC - Houston TX

International Classification:

C09K 706

US Classification:

507136, 507138

Abstract:

An invert emulsion drilling fluid includes an oleaginous continuous phase; a non-oleaginous discontinuous phase; a biodegradable surfactant including a di-fatty acid ester of triglycerol; and a weighting agent. It is preferred that the fatty acid have the formula RCO H in which R is an alkyl or alkenyl having 10 to 20 carbon atoms. The oleaginous fluid is selected from diesel oil, mineral oil, synthetic oil, ester oils, glycerides of fatty acids, aliphatic esters, aliphatic ethers, aliphatic acetals, or other such hydrocarbons and combinations of these and similar compounds. The non-oleaginous phase is selected from fresh water, sea water, brine, aqueous solutions containing water soluble organic salts, water soluble alcohols or water soluble glycols or combinations of these and similar compounds. The weighting agent is any suitable weighting agent and is preferably selected from water insoluble weighting agents such as barite, calcite, mullite, gallena, manganese oxides, iron oxides, or combinations of these or water soluble weighting agents such as water soluble salts of zinc, iron, barium, calcium or combinations of these and similar compounds.

US Patent:

20120273200, Nov 1, 2012

Filed:

Jul 7, 2010

Appl. No.:

13/382391

Inventors:

Eugene Dakin - Langdon, CA
Reginald J. Bell - Sugar Land TX, US
Jorge Fernandez - Houston TX, US

Assignee:

M-I L.L.C. - Houston TX

International Classification:

E21B 33/13

US Classification:

166292

Abstract:

A method of converting a completed well into a dual completed well that includes selectively pumping a water-based fluid into a first production zone of the completed well, wherein the water-based fluid has a pH of greater than about 5; allowing the water-based fluid to form a continuous, non-flowing water-based gel in the first production zone of the completed well, wherein the water-based gel has a pH of greater than about 5; disposing a layer of cement into the completed well above the water- based gel; perforating a second production zone of the completed well in a location above the layer of cement; drilling through the layer of cement; and breaking the water-based gel located in the first production zone of the completed well, wherein the breaking comprises: exposing the water-based gel to a breaker fluid, wherein the breaker fluid has a pH of greater than about 5 is disclosed.