Patents Represented by Attorney Alexander J. McKillop

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  • Method for well completions in horizontal wellbores in loosely consolidated formations
    Patent number: 5415227
    Abstract: A method for completing a horizontal wellbore in a loosely consolidated or unconsolidated formation. To minimize collapse of the wellbore and minimize sand production while providing for greater flexibility in the placement of a sand control device in a horizontal wellbore, a slotted liner with a flexible sand control device affixed thereto is positioned into the horizontal wellbore. After positioning, the liner with sand control device attached, high permeability of openings within the liner is maintained when producing hydrocarbonaceous fluids from the formation.
    Type: Grant
    Filed: November 15, 1993
    Date of Patent: May 16, 1995
    Assignee: Mobil Oil Corporation
    Inventor: Alfred R. Jennings, Jr.
  • Method for removing alkaline sulfate scale in downhole tubulars
    Patent number: 5415696
    Abstract: The present invention relates to a method of removing alkaline earth sulfate scale from the interior surface of downhole production tubing comprising contacting the scale with a solvent having a specific gravity of at least 1.2 while simultaneously milling the scale with a rotating mill head connected to a downhole motor.
    Type: Grant
    Filed: June 6, 1994
    Date of Patent: May 16, 1995
    Assignee: Mobil Oil Corporation
    Inventor: James M. Paul
  • Isolation of high purity diamondoid fractions and components
    Patent number: 5414189
    Abstract: A process is disclosed for separating high purity diamondoid fractions from a mixture containing substituted and unsubstituted diamondoid compounds.
    Type: Grant
    Filed: August 23, 1993
    Date of Patent: May 9, 1995
    Assignee: Mobil Oil Corporation
    Inventors: Catherine S. H. Chen, Steven E. Wentzek
  • Hydrocarbon upgrading process
    Patent number: 5413698
    Abstract: Low sulfur gasoline of relatively high octane number is produced from a catalytically cracked, sulfur-containing naphtha by hydrodesulfurization followed by treatment in a second step over a a first catalyst zone comprising a large pore size zeolite material and a second catalyst zone comprising an intermediate pore size material. Preferably, the large pore size material is zeolite beta and the intermediate pore size material is ZSM-5. The treatment in the second step restores the octane loss which takes place as a result of the hydrogenative treatment and results in a low sulfur gasoline product with an octane number comparable to that of the feed naphtha. In favorable cases, using feeds of extended end point such as heavy naphthas with 95 percent points above about 380.degree. F. (about 193.degree. C.), improvements in both product octane and yield relative to the feed may be obtained.
    Type: Grant
    Filed: August 5, 1992
    Date of Patent: May 9, 1995
    Assignee: Mobil Oil Corporation
    Inventors: David L. Fletcher, Mohsen N. Harandi, Michael S. Sarli, Stuart S. Shih
  • High severity visbreaking of residual oil
    Patent number: 5413702
    Abstract: The present invention provides a process which involves visbreaking of residual oil to produce fuel oil or distillate. The visbreaking is conducted at high severity in a liquid phase, fluidized bed reactor with an H.sub.2 quench in the settling zone. The visbreaker effluent and H.sub.2 are then hydrotreated to stabilize the product by saturating the unstable species, such as olefins, radicals and other fragments from cracking.
    Type: Grant
    Filed: February 21, 1992
    Date of Patent: May 9, 1995
    Assignee: Mobil Oil Corporation
    Inventor: Tsoung Y. Yan
  • FCC process with fines tolerant SCR reactor
    Patent number: 5413699
    Abstract: A process for reducing NOx emissions and an FCC process using same as a flue gas cleanup stage are disclosed. Gas containing NOx and entrained catalyst fines is passed up through a bed of catalyst at a sufficient velocity to expand and fluidize the catalyst bed. Particulates deposited on the catalyst are abraided or elutriated away by fluidization, preventing fouling of the DeNOx catalyst. A low pressure drop design, with vertical, perforate gas distributors covered by the bed is also disclosed.
    Type: Grant
    Filed: October 14, 1993
    Date of Patent: May 9, 1995
    Assignee: Mobil Oil Corporation
    Inventor: Tai-Sheng Chou
  • Liquid acid alkylation catalyst and isoparaffin-olefin alkylation process
    Patent number: 5414186
    Abstract: The present invention provides an acid catalyzed isoparaffin-olefin alkylation process which improves process stability and safety by storing the acid in an excess of an additive which reduces the fuming tendency of the mixture, for example, a sulfone. Acid is stripped from the additive and concentrated prior to charging the acid to the alkylation reaction zone. Specifically, because the stored solution of acid in the additive is more dilute than can be effectively used for isoparaffin-olefin alkylation, the acid is concentrated prior to charging the catalyst mixture to the reaction zone. The invention solves the problem of conjunct polymer accumulation by diluting the conjunct polymer with a relatively large volume of the additive and continuously regenerating a slipstream of the dilute acid/additive mixture.
    Type: Grant
    Filed: October 13, 1993
    Date of Patent: May 9, 1995
    Assignee: Mobil Oil Corporation
    Inventors: Jonathan E. Child, Tomas R. Melli
  • Multizone catalytic process
    Patent number: 5414146
    Abstract: Porous metallosilicate catalyst (e.g. Zeolite Beta) is active at low temperature for converting lower alkanol (e.g. methanol) and C.sub.4 -C.sub.7 tertiary alkenes to high octane ether product. Such catalytic reaction is especially useful in multizone catalytic reactor systems employing catstill rectification.
    Type: Grant
    Filed: August 23, 1993
    Date of Patent: May 9, 1995
    Assignee: Mobil Oil Corporation
    Inventors: Weldon K. Bell, Steven H. Brown, Mohsen N. Harandi, Jeffrey C. Trewella
  • Gasoline upgrading process
    Patent number: 5413697
    Abstract: Low sulfur gasoline of relatively high octane number is produced from a catalytically cracked, sulfur-containing naphtha by hydrodesulfurization followed by treatment over an acidic catalyst containing, preferably an intermediate pore size zeolite such as ZSM-5 and a zeolite such as MCM-22. The treatment over the acidic catalyst in the second step restores the octane loss which takes place as a result of the hydrogenative treatment and results in a low sulfur gasoline product with an octane number comparable to that of the feed naphtha. In favorable cases, using feeds of extended end point such as heavy naphthas with 95 percent points above about 380.degree. F. (about 193.degree. C.), improvements in both product octane and yield relative to the feed may be obtained.
    Type: Grant
    Filed: July 15, 1992
    Date of Patent: May 9, 1995
    Assignee: Mobil Oil Corporation
    Inventors: David L. Fletcher, Michael S. Sarli, Stuart S. Shih
  • Use of thin liquid spacer volumes to enhance hydraulic fracturing
    Patent number: 5411091
    Abstract: A method for enhanced hydraulic fracturing which comprises injecting a proppant laden fracturing fluid into a formation or reservoir at a rate and pressure sufficient to fracture said formation. Next, a thin spacer fluid is injected into the created fracture. Afterwards, a proppant laden fracturing fluid is injected into the formation at a rate and pressure sufficient to hold the created fracture open which allows proppant to be more evenly distributed throughout the created fracture as proppant falls through the spacer fluid thereby avoiding proppant convection in the created fracture while obtaining substantially improved propping of the fracture.
    Type: Grant
    Filed: December 9, 1993
    Date of Patent: May 2, 1995
    Assignee: Mobil Oil Corporation
    Inventor: Alfred R. Jennings, Jr.
  • Imbibition process using a horizontal well for oil production from low permeability reservoirs
    Patent number: 5411094
    Abstract: A method for enhanced oil recovery from a low permeability diatomaceous reservoir by imbibition is described. In this method, oil is displaced from the reservoir with a horizontal wellbore by a combination of applied fluid pressure, plus "enhanced imbibition." Enhanced imbibition is accomplished by adding chemical additives, water, or brine to an injection fluid so that rock in the tight diatomaceous reservoir has a stronger affinity for the water present therein, thus releasing oil from the rock. The method is either continuous or cyclic.
    Type: Grant
    Filed: November 22, 1993
    Date of Patent: May 2, 1995
    Assignee: Mobil Oil Corporation
    Inventor: Paul S. Northrop
  • Oil recovery by enhanced imbitition in low permeability reservoirs
    Patent number: 5411086
    Abstract: A method for enhanced oil recovery from a low permeability diatomaceous reservoir by imbibition is described. In this method, oil is displaced from a single injection well, or series of injection wells into a single producer or series of producing wells by a combination of applied fluid pressure, plus "enhanced imbibition." Enhanced imbibition is accomplished by adding chemical additives to the injection fluid so that rock in the tight reservoir has a stronger affinity for the water present therein, thus releasing oil from the rock.
    Type: Grant
    Filed: December 9, 1993
    Date of Patent: May 2, 1995
    Assignee: Mobil Oil Corporation
    Inventors: Christopher Burcham, Robert E. Fast, Anthony S. Murer, Paul S. Northrop
  • Method of enhancing stimulation load fluid recovery
    Patent number: 5411093
    Abstract: A method for increasing the efficiency by which fracture fluids are produced back from a hydrocarbonaceous fluid bearing formation. To remove said fracture fluid, agglomerated particles or granules containing a chemical blowing agent are placed into the formation. After placement of the agglomerated particles and granules containing the blowing agent and fracturing the formation, the blowing agent decomposes thereby providing a driving force for fluid load removal from the formation matrix. Increased porosity enhances communication between the formation and the fracture, thus increasing the efficiency of fracture fluid production. Gas liberation within the matrix establishes communication pathways for subsequently removing hydrocarbonaceous fluids by displacing load fluids into the fracture and the well.
    Type: Grant
    Filed: December 10, 1993
    Date of Patent: May 2, 1995
    Assignee: Mobil Oil Corporation
    Inventor: Alfred R. Jennings, Jr.
  • Heavy naphtha conversion
    Patent number: 5409595
    Abstract: Catalytically cracked naphthas containing C.sub.9 + hydrocarbons are hydrocracked over a crystalline zeolite, typically, mildly steamed zeolite beta then subjected to reforming to achieve a gasoline product of reduced end boiling range and higher octane than the feed. A hydrogen stream from the reformer which contains a catalytic promoter, such as chlorine, is separated into a first stream and a second stream. The first stream is treated over a solid sorbent to remove the promoter and recycled promoter to the hydrocracking step while the untreated second hydrogen stream which contains promoter is recycled to the reformer.
    Type: Grant
    Filed: April 4, 1994
    Date of Patent: April 25, 1995
    Assignee: Mobil Oil Corporation
    Inventors: Mohsen N. Harandi, Roger A. Morrison, Gerald J. Teitman
  • FCC process and apparatus for cooling FCC catalyst during regeneration
    Patent number: 5409872
    Abstract: A process and apparatus for fluidized catalytic cracking (FCC) with cooling of FCC catalyst during regeneration in a baffled heat exchanger attached to the regenerator. The heat exchanger has a vertical baffle defining an inlet and an outlet side. Lift gas added to the outlet side induces flow from the regenerator, around the baffle and back to the regenerator. A symmetrical design, with reversing flow can equalize wear on heat exchanger tubes and permit selected cooling if the heat exchanger outlet is near the regenerated catalyst outlet.
    Type: Grant
    Filed: November 30, 1993
    Date of Patent: April 25, 1995
    Assignee: Mobil Oil Corporation
    Inventor: Michael F. Raterman
  • Synthesis of adamantane-2,4-dione
    Patent number: 5410092
    Abstract: The invention provides a method for converting a lactone of a diamondoid compound to the hydroxyketone of the diamondoid compound wherein the hydroxyl group and the carbonyl group are separated by at least one bridgehead carbon comprising reacting an anhydride containing from about 2 to about 20 carbon atoms with the lactone of the diamondoid compound in the presence of acid.
    Type: Grant
    Filed: December 9, 1993
    Date of Patent: April 25, 1995
    Assignee: Mobil Oil Corporation
    Inventor: Dong-Ming Shen
  • Multifunctional fuel additives and compositions thereof
    Patent number: 5409506
    Abstract: Additives which improve the low-temperature properties of distillate fuels are the reaction products of (1) diaminodiols, and (2) the product of pyromellitic dianhydride and aminoalcohols and/or amines with long-chain hydrocarbyl groups attached.
    Type: Grant
    Filed: September 14, 1993
    Date of Patent: April 25, 1995
    Assignee: Mobil Oil Corporation
    Inventors: David J. Baillargeon, Angeline B. Cardis, Dale B. Heck
  • Multifunctional additives
    Patent number: 5407592
    Abstract: A lubricant of fuel composition contains a multifunctional antioxidant/metal deactivating and thermal stabilizing amount of a tolyltriazole-derived Mannich base made from a tolyltriazole, an aliphatic amine, such as diisobutylamine or bis(2-ethylhexyl)amine, a cyclic amine, such as 1,4-diaminocyclohexane or ether amines exemplified by C.sub.6 to C.sub.13 alkoxypropylamines and polyether primary amines such as those derived from nonylphenol ethyoxylates and formaldehyde. The reaction products are, optionally, treated with epoxide.
    Type: Grant
    Filed: September 21, 1992
    Date of Patent: April 18, 1995
    Assignee: Mobil Oil Corporation
    Inventors: Vic M. Cheng, Liehpao O. Farng, Andrew G. Horodysky, Ronald J. Poole
  • Gasoline upgrading process
    Patent number: 5407559
    Abstract: A process is provided for producing low sulfur gasoline of relatively high octane number from a catalytically cracked, sulfur-containing naphtha by hydrodesulfurization followed by treatment over an acidic catalyst comprising crystals having the structure of ZSM-12. The treatment over the acidic catalyst comprising ZSM-12 in the second step restores the octane loss which takes place as a result of the hydrogenative treatment and results in a low sulfur gasoline product with an octane number comparable to that of the feed naphtha. In favorable cases, using feeds of extended end point such as heavy naphthas with 95 percent points above about 380.degree. F. (about 193.degree. C.), improvements in both product octane and yield relative to the feed may be obtained.
    Type: Grant
    Filed: June 1, 1992
    Date of Patent: April 18, 1995
    Assignee: Mobil Oil Corporation
    Inventors: Thomas F. Degnan, Stuart S. Shih
  • Food container
    Patent number: D358091
    Type: Grant
    Filed: July 8, 1993
    Date of Patent: May 9, 1995
    Assignee: Mobil Oil Corporation
    Inventor: Richard T. Warburton