| Patent | Date |
|---|
Process for predicting behavior of a subterranean formation
Grant 6,052,520 - Watts, III April 18, 2 | 2000-04-18 |
Process for liquefaction of natural gas
Grant 6,023,942 - Thomas , et al. February 15, 2 | 2000-02-15 |
Method for reconstructing seismic wavefields
Grant 6,021,379 - Duren , et al. February 1, 2 | 2000-02-01 |
Cascade refrigeration process for liquefaction of natural gas
Grant 6,016,665 - Cole , et al. January 25, 2 | 2000-01-25 |
Measuring apparatus
Grant 6,011,490 - Tonnesen , et al. January 4, 2 | 2000-01-04 |
Seismic migration using offset checkshot data
Grant 6,002,642 - Krebs December 14, 1 | 1999-12-14 |
Method of offshore platform construction using a tension-moored barge
Grant H1,815 - Campbell , et al. November 2, 1 | 1999-11-02 |
Process for liquefying a natural gas stream containing at least one freezable component
Grant 5,956,971 - Cole , et al. September 28, 1 | 1999-09-28 |
Method for separation of solids from drilling fluids by magnetic separation and centrifugation
Grant 5,944,195 - Huang , et al. August 31, 1 | 1999-08-31 |
Method for inhibiting hydrate formation using maleimide copolymers
Grant 5,936,040 - Costello , et al. August 10, 1 | 1999-08-10 |
Single well system for mapping sources of acoustic energy
Grant 5,917,160 - Bailey June 29, 1 | 1999-06-29 |
Solids-stabilized emulsion
Grant 5,910,467 - Bragg June 8, 1 | 1999-06-08 |
Well collision avoidance
Grant 5,901,795 - Tsao , et al. May 11, 1 | 1999-05-11 |
Method for predetermining a polymer for inhibiting hydrate formation
Grant 5,900,516 - Talley , et al. May 4, 1 | 1999-05-04 |
Method for stimulation of lenticular natural gas formations
Grant 5,890,536 - Nierode , et al. April 6, 1 | 1999-04-06 |
Method for measuring lateral continuity at a specified subsurface location from seismic data
Grant 5,884,229 - Matteucci March 16, 1 | 1999-03-16 |
Geophysical prospecting
Grant 5,877,995 - Thompson , et al. March 2, 1 | 1999-03-02 |
Method for inhibiting hydrate formation
Grant 5,874,660 - Colle , et al. February 23, 1 | 1999-02-23 |
Oil recovery method using an emulsion
Grant 5,855,243 - Bragg January 5, 1 | 1999-01-05 |
Method for characterizing subsurface petrophysical properties using linear shape attributes
Grant 5,848,379 - Bishop December 8, 1 | 1998-12-08 |
Surface active agents as gas hydrate inhibitors
Grant 5,841,010 - Rabeony , et al. November 24, 1 | 1998-11-24 |
Method of generating 3-D geologic models incorporating geologic and geophysical constraints
Grant 5,838,634 - Jones , et al. November 17, 1 | 1998-11-17 |
Seismic attribute analysis using inflection point intervals
Grant 5,808,966 - Calvert , et al. September 15, 1 | 1998-09-15 |
Method for inhibiting hydrate formation
Grant H1,749 - Colle , et al. September 1, 1 | 1998-09-01 |
Method for attenuating surface wavetrains in seismic data
Grant 5,781,503 - Kim July 14, 1 | 1998-07-14 |
Single well system for mapping sources of acoustic energy
Grant 5,747,750 - Bailey , et al. May 5, 1 | 1998-05-05 |
Maleimide copolymers and method for inhibiting hydrate formation
Grant 5,744,665 - Costello , et al. April 28, 1 | 1998-04-28 |
Method for recovering a hydrocarbon liquid from a subterranean formation
Grant 5,711,373 - Lange January 27, 1 | 1998-01-27 |
Reconstruction of geologic thermal histories
Grant 5,704,713 - Kim , et al. January 6, 1 | 1998-01-06 |
Method for determining formation properties from seismic attributes
Grant 5,691,958 - Calvert , et al. November 25, 1 | 1997-11-25 |
Method for removing non-geologic amplitude variations from seismic data
Grant H1,693 - Thornton , et al. November 4, 1 | 1997-11-04 |
Process for displaying N dimensional data in an N-1 dimensional format
Grant 5,671,344 - Stark September 23, 1 | 1997-09-23 |
Migration velocity analysis using limited-aperture and monte carlo migration
Grant 5,640,368 - Krebs June 17, 1 | 1997-06-17 |
Water-based high temperature well servicing composition and method of using same
Grant 5,620,947 - Elward-Berry April 15, 1 | 1997-04-15 |
Method for inhibiting hydrate formation
Grant 5,600,044 - Colle , et al. February 4, 1 | 1997-02-04 |
Seismic imaging using wave equation extrapolation
Grant 5,596,548 - Krebs January 21, 1 | 1997-01-21 |
3D wave equation migration of a 2D grid of seismic data
Grant 5,587,942 - Krebs December 24, 1 | 1996-12-24 |
Method for inhibiting hydrate formation
Grant 5,583,273 - Colle , et al. December 10, 1 | 1996-12-10 |
Method for deriving reservoir lithology and fluid content from pre-stack inversion of seismic data
Grant 5,583,825 - Carrazzone , et al. December 10, 1 | 1996-12-10 |
Downhole mixer
Grant 5,582,251 - Bailey , et al. December 10, 1 | 1996-12-10 |
Method and apparatus for detection of seismic and electromagnetic waves
Grant H1,561 - Thompson July 2, 1 | 1996-07-02 |
Method of processing seismic data having multiple reflection noise
Grant 5,521,881 - Lau , et al. May 28, 1 | 1996-05-28 |
Method of determining optimal seismic multistreamer spacing
Grant 5,517,463 - Hornbostel , et al. May 14, 1 | 1996-05-14 |
Method for wave equation velocity replacement of the low-velocity-layer in seismic data processing
Grant H1,529 - Schneider, Jr. , et al. May 7, 1 | 1996-05-07 |
Method for using electromagnetic grounded antennas as directional geophones
Grant H1,524 - Thompson , et al. April 2, 1 | 1996-04-02 |
Method of processing seismic data for migration
Grant 5,500,832 - Berryhill March 19, 1 | 1996-03-19 |
Method for inhibiting hydrate formation
Grant 5,491,269 - Colle , et al. February 13, 1 | 1996-02-13 |
Low-density ball sealer for use as a diverting agent in hostile environment wells
Grant 5,485,882 - Bailey , et al. January 23, 1 | 1996-01-23 |
Method for determining subsurface electrical resistance using electroseismic measurements
Grant 5,486,764 - Thompson , et al. January 23, 1 | 1996-01-23 |
Solid-liquid separation process using at least one polymer and cavitation energy
Grant 5,472,620 - Huang December 5, 1 | 1995-12-05 |
Apparatus and method for installing open-ended tubular members axially into the earth
Grant 5,456,326 - Raines October 10, 1 | 1995-10-10 |
Marine geophysical prospecting system
Grant H1,490 - Thompson , et al. September 5, 1 | 1995-09-05 |
End-cap-to-piston coupling for triaxial test apparatus
Grant 5,435,187 - Ewy , et al. July 25, 1 | 1995-07-25 |
Synchronized acoustic source
Grant 5,418,335 - Winbow * May 23, 1 | 1995-05-23 |
Tubing connection with eight rounded threads
Grant 5,411,301 - Moyer , et al. May 2, 1 | 1995-05-02 |
Method for cascading sweeps for a seismic vibrator
Grant 5,410,517 - Andersen April 25, 1 | 1995-04-25 |
Seismic vibrator signature deconvolution
Grant 5,400,299 - Trantham March 21, 1 | 1995-03-21 |
Detection and mapping of hydrocarbon reservoirs with radar waves
Grant 5,400,030 - Duren , et al. March 21, 1 | 1995-03-21 |
Robust, efficient three-dimensional finite-difference traveltime calculations
Grant 5,394,325 - Schneider, Jr. February 28, 1 | 1995-02-28 |
Filter for removal of coherent noise from seismic data
Grant 5,392,213 - Houston , et al. February 21, 1 | 1995-02-21 |
Method for correcting a seismic source pulse waveform
Grant 5,384,752 - Duren , et al. January 24, 1 | 1995-01-24 |
Offshore platform well system
Grant 5,379,844 - Glasscock , et al. January 10, 1 | 1995-01-10 |
Synchronized acoustic source
Grant 5,371,330 - Winbow December 6, 1 | 1994-12-06 |
Method of controlling cuttings accumulation in high-angle wells
Grant 5,327,984 - Rasi , et al. July 12, 1 | 1994-07-12 |
Drill collar connections
Grant H1,329 - Bailey , et al. July 5, 1 | 1994-07-05 |
Well treatment using ball sealers
Grant 5,309,995 - Gonzalez , et al. May 10, 1 | 1994-05-10 |
Method for continuity logging
Grant H1,307 - Krohn May 3, 1 | 1994-05-03 |
Downhole pump of constant differential hydraulic pressure
Grant 5,290,159 - Miller , et al. March 1, 1 | 1994-03-01 |
Methods for measuring physical parameters of a low permeability rock formation in situ
Grant 5,285,692 - Steiger , et al. February 15, 1 | 1994-02-15 |
Controlled phase marine source subarray
Grant 5,281,773 - Duren * January 25, 1 | 1994-01-25 |
Measurement of hydration behavior of geologic materials
Grant 5,275,063 - Steiger , et al. January 4, 1 | 1994-01-04 |
Broadband resonant wave downhole seismic source
Grant 5,268,537 - Winbow , et al. December 7, 1 | 1993-12-07 |
Refrigerant recovery scheme
Grant 5,265,427 - Stone , et al. November 30, 1 | 1993-11-30 |
Apparatuses and methods for measuring ultrasonic velocities in materials
Grant 5,265,461 - Steiger , et al. November 30, 1 | 1993-11-30 |
Bubble cap tray for melting solids and method for using same
Grant 5,265,428 - Valencia , et al. November 30, 1 | 1993-11-30 |
Process for welding thermally and/or mechanically treated metal conduits
Grant 5,258,600 - Arthur November 2, 1 | 1993-11-02 |
Buoyant cable tether
Grant H1,246 - Huffaker , et al. November 2, 1 | 1993-11-02 |
Method for determining residual oil saturation of a watered-out reservoir
Grant 5,256,572 - Tang , et al. October 26, 1 | 1993-10-26 |
Apparatuses and methods for adjusting a material's fluid content and effective stresses
Grant 5,253,518 - Steiger , et al. October 19, 1 | 1993-10-19 |
High count seismic data collection and transmission through analog time multiplexing
Grant 5,253,219 - Houston , et al. October 12, 1 | 1993-10-12 |
Methods and apparatuses for measurement of the strengths, pore pressures, and mechanical properties of low permeability geologic materials
Grant 5,226,310 - Steiger July 13, 1 | 1993-07-13 |
Low-torque centralizer
Grant H1,192 - Keller June 1, 1 | 1993-06-01 |
High gas sealibility makeup for API buttress connections
Grant 5,212,885 - Buonodono , et al. May 25, 1 | 1993-05-25 |
Apparatus and method for detecting seismic waves in a borehole using multiple clamping detector units
Grant 5,212,354 - Miller , et al. May 18, 1 | 1993-05-18 |
Methods for determining in situ shale strengths, elastic properties, pore pressures, formation stresses, and drilling fluid parameters
Grant 5,205,164 - Steiger , et al. April 27, 1 | 1993-04-27 |
Nontoxic, nonchloride, water-base, inhibitive fluid to stabilize water sensitive shale
Grant 5,198,415 - Steiger March 30, 1 | 1993-03-30 |
Method of generating seismic wavelets using seismic range equation
Grant 5,173,880 - Duren , et al. December 22, 1 | 1992-12-22 |
Method and apparatus for tube-wave suppression
Grant 5,170,018 - Potier December 8, 1 | 1992-12-08 |
Microaccumulator for measurement of fluid volume changes under pressure
Grant 5,159,828 - Steiger , et al. November 3, 1 | 1992-11-03 |
Light end enhanced refrigeration loop
Grant 5,157,925 - Denton , et al. October 27, 1 | 1992-10-27 |
Multiphase fluid mass transfer pump
Grant 5,156,537 - Massinon October 20, 1 | 1992-10-20 |
Deflector means for centrifugal pumps
Grant 5,156,522 - Tessier October 20, 1 | 1992-10-20 |
Method for increasing the end-bearing capacity of open-ended piles
Grant 5,145,284 - Hulett , et al. September 8, 1 | 1992-09-08 |
Kerf-cutting apparatus for increased drilling rates
Grant 5,145,017 - Holster , et al. September 8, 1 | 1992-09-08 |
Controlled phase marine source array
Grant 5,142,498 - Duren August 25, 1 | 1992-08-25 |
Seismic device
Grant 5,142,509 - Dolengowski August 25, 1 | 1992-08-25 |
Method for separating a multi-component feed stream using distillation and controlled freezing zone
Grant 5,120,338 - Potts, Jr. , et al. June 9, 1 | 1992-06-09 |
Use of tracers to monitor in situ miscibility of solvent in oil reservoirs during EOR
Grant 5,111,882 - Tang , et al. May 12, 1 | 1992-05-12 |
Method and apparatus for acoustic well logging
Grant RE33,837 - Chung , et al. March 3, 1 | 1992-03-03 |
Collar load support tubing running procedure
Grant 5,083,356 - Gonzalez , et al. January 28, 1 | 1992-01-28 |
Method and apparatus to start-up controlled freezing zone process and purify the product stream
Grant 5,062,270 - Haut , et al. November 5, 1 | 1991-11-05 |
Test-fluid composition and method for detecting leaks in pipelines and associated facilities
Grant 5,049,312 - Quaife , et al. September 17, 1 | 1991-09-17 |
Oil recovery process using arkyl aryl polyalkoxyol sulfonate surfactants as mobility control agents
Grant 5,046,560 - Teletzke , et al. September 10, 1 | 1991-09-10 |
Electrodes incorporating intercalation compounds for mangetotelluric, electroseismic and other electrical survey applications
Grant 5,041,792 - Thompson August 20, 1 | 1991-08-20 |
Method and apparatus for setting a superstructure onto an offshore platform
Grant 5,037,241 - Vaughn , et al. August 6, 1 | 1991-08-06 |
Method and apparatus for generating seismic energy in transition zones
Grant 5,031,718 - Peavey July 16, 1 | 1991-07-16 |
Acoustic quadrupole shear wave logging device
Grant 5,027,331 - Winbow , et al. * June 25, 1 | 1991-06-25 |
Subsea tree cap well choke system
Grant 5,010,956 - Bednar April 30, 1 | 1991-04-30 |
Method for determining the swelling clay content of cement mixtures by dielectric measurements
Grant 5,010,301 - Leung , et al. * April 23, 1 | 1991-04-23 |
Chemical injection valve
Grant 5,004,007 - Johnson , et al. April 2, 1 | 1991-04-02 |
Continuity logging using differenced signal detection
Grant 5,005,159 - Krohn April 2, 1 | 1991-04-02 |
Overburn process for recovery of heavy bitumens
Grant 4,993,490 - Stephens , et al. February 19, 1 | 1991-02-19 |
Marine seismic receiving system employing multiple depth hydrostreamer cable
Grant 4,992,991 - Young , et al. February 12, 1 | 1991-02-12 |
Process for rapidly determining the solids content in drilling fluids
Grant 4,979,393 - Leung , et al. December 25, 1 | 1990-12-25 |
Marine seismic source frame
Grant 4,970,046 - Dolengowski November 13, 1 | 1990-11-13 |
Process for LPG recovery
Grant RE33,408 - Khan , et al. October 30, 1 | 1990-10-30 |
Method for seismic trace interpolation
Grant 4,964,098 - Hornbostel October 16, 1 | 1990-10-16 |
Seismic source firing control system
Grant 4,960,183 - Young, II October 2, 1 | 1990-10-02 |
Process for conditioning a high carbon dioxide content natural gas stream for gas sweetening
Grant H825 - Green October 2, 1 | 1990-10-02 |
Process for manufacturing disulfonate surfactants
Grant 4,959,490 - Parnell , et al. September 25, 1 | 1990-09-25 |
Standing valve
Grant 4,951,752 - Coleman August 28, 1 | 1990-08-28 |
Acoustic quadrupole shear wave logging device
Grant 4,932,003 - Winbow , et al. June 5, 1 | 1990-06-05 |
Offshore platform deck/jacket mating system and method
Grant 4,930,938 - Rawstron , et al. June 5, 1 | 1990-06-05 |
Method and apparatus for cryogenic separation of carbon dioxide and other acid gases from methane
Grant 4,923,493 - Valencia , et al. May 8, 1 | 1990-05-08 |
Method and apparatus for monitoring a flowstream
Grant 4,924,099 - Lim , et al. May 8, 1 | 1990-05-08 |
Floating/tensioned production system with caisson
Grant 4,913,238 - Danazcko , et al. April 3, 1 | 1990-04-03 |
Tether connector for a tension leg platform
Grant 4,907,914 - Gunderson , et al. March 13, 1 | 1990-03-13 |
Electroseismic prospecting by detection of an electromagnetic signal produced by dipolar movement
Grant 4,904,942 - Thompson February 27, 1 | 1990-02-27 |
Multishot downhole explosive device as a seismic source
Grant 4,895,218 - Chen , et al. January 23, 1 | 1990-01-23 |
Fatigue-resistant threaded connector
Grant 4,892,337 - Gunderson , et al. January 9, 1 | 1990-01-09 |
Steerable tail buoy
Grant 4,890,568 - Dolengowski January 2, 1 | 1990-01-02 |
Method for noise suppression in the stacking of seismic traces
Grant 4,882,713 - Hughes November 21, 1 | 1989-11-21 |
Method for rapidly determining the swelling-clay content in shales and shaly sandstone formations by high-frequency dielectric constant measurements
Grant 4,876,512 - Kroeger , et al. October 24, 1 | 1989-10-24 |
Endfire seismic receiver and method of use
Grant 4,872,144 - Young , et al. October 3, 1 | 1989-10-03 |
Method for treating a produced hydrocarbon-containing fluid
Grant 4,869,830 - Konak , et al. September 26, 1 | 1989-09-26 |
Marine shear-wave detection system using single mode reflection boundary conversion technique
Grant 4,870,625 - Young , et al. September 26, 1 | 1989-09-26 |
Analysis of thin section images
Grant 4,868,883 - Chen September 19, 1 | 1989-09-19 |
Heave compensated stabbing and landing tool
Grant 4,858,694 - Johnson , et al. August 22, 1 | 1989-08-22 |
Process for removing contaminants from dialkyl ethers of polyalkylene glycols
Grant 4,859,802 - Thomas , et al. August 22, 1 | 1989-08-22 |
Centrifuge processor and liquid level control system
Grant 4,846,780 - Galloway , et al. July 11, 1 | 1989-07-11 |
Method for establishing a common bandwidth for processing seismic data obtained from different sources, recording equipment and surveys
Grant 4,837,752 - Pepchinski June 6, 1 | 1989-06-06 |
Method and system for measuring azimuthal anisotropy effects using acoustic multipole transducers
Grant 4,832,148 - Becker , et al. May 23, 1 | 1989-05-23 |
Oil recovery process using alkyl hydroxyaromatic dianionic surfactants as mobility control agents
Grant 4,828,032 - Teletzke , et al. May 9, 1 | 1989-05-09 |
Underwater cryogenic pipeline system
Grant 4,826,354 - Adorjan * May 2, 1 | 1989-05-02 |
Jacketed pipeline system with pressurized gas to resist external stress
Grant H594 - Adorjan March 7, 1 | 1989-03-07 |
Method for restoring the background appearance of two-dimensional filtered seismic data
Grant 4,809,238 - Bishop , et al. February 28, 1 | 1989-02-28 |
Pneumatic riser tensioner
Grant 4,808,035 - Stanton , et al. February 28, 1 | 1989-02-28 |
Method and apparatus for gathering seismic data and selectively controlling isolated distributed recorders in an isolated distributed recording system
Grant 4,807,200 - Montes , et al. February 21, 1 | 1989-02-21 |
Method of 3-D seismic imaging for structures with approximate circular symmetry
Grant 4,803,668 - Berryhill , et al. February 7, 1 | 1989-02-07 |
Method and apparatus for dividing a single stream of liquid and vapor into multiple streams having similar vapor to liquid rations
Grant 4,800,921 - Greebe January 31, 1 | 1989-01-31 |
Method and system for seismic exploration employing a dual-dipole hydrophone streamer
Grant 4,789,968 - Rice December 6, 1 | 1988-12-06 |
Drill bit with wear indicating feature
Grant 4,785,895 - Davis, Jr. , et al. November 22, 1 | 1988-11-22 |
Apparatus for detecting drill bit wear
Grant 4,785,894 - Davis, Jr. , et al. November 22, 1 | 1988-11-22 |
Method and apparatus for remotely orienting a flowline for connection to a subsea structure
Grant 4,784,523 - Louis , et al. November 15, 1 | 1988-11-15 |
Method for detecting drilling fluid in the annulus of a cased wellbore
Grant 4,780,266 - Jordan , et al. October 25, 1 | 1988-10-25 |
Shear wave logging using guided waves
Grant 4,774,693 - Winbow , et al. September 27, 1 | 1988-09-27 |
Method for primary cementing a well using a drilling mud composition which may be converted to cement upon irradiation
Grant 4,768,593 - Novak September 6, 1 | 1988-09-06 |
System for mating an integrated deck with an offshore substructure
Grant 4,761,097 - Turner August 2, 1 | 1988-08-02 |
Method for primary cementing a well with a drilling mud which may be converted to cement using chemical initiators with or without additional irradiation
Grant 4,760,882 - Novak August 2, 1 | 1988-08-02 |
Directional acoustic logger apparatus and method
Grant 4,744,416 - Bower May 17, 1 | 1988-05-17 |
Apparatus for detecting substantially longitudinal flaws in the end area of a tubular member using magnetic excitation and a scanning sensor
Grant 4,739,273 - Petersen , et al. * April 19, 1 | 1988-04-19 |
Remotely-controllable paravane
Grant 4,729,333 - Kirby , et al. March 8, 1 | 1988-03-08 |
Compliant offshore structure stabilized by resilient pile assemblies
Grant 4,721,417 - Piazza , et al. January 26, 1 | 1988-01-26 |
Underwater cryogenic pipeline system
Grant 4,718,459 - Adorjan January 12, 1 | 1988-01-12 |
Use of degradable ball sealers to seal casing perforations in well treatment fluid diversion
Grant 4,716,964 - Erbstoesser , et al. January 5, 1 | 1988-01-05 |
Baffle system for conducting well treating operations
Grant 4,715,443 - Gidley December 29, 1 | 1987-12-29 |
Method for filtering and combining seismic data having different spectral characteristics
Grant 4,715,021 - Dittert December 22, 1 | 1987-12-22 |
System for connecting two members together
Grant 4,702,636 - Guile October 27, 1 | 1987-10-27 |
Spray ice structure
Grant 4,699,545 - Chen , et al. October 13, 1 | 1987-10-13 |
Acoustic well logging method for improved amplitude data acquisition
Grant 4,698,791 - Cunningham October 6, 1 | 1987-10-06 |
Compliant offshore platform
Grant 4,696,603 - Danaczko , et al. September 29, 1 | 1987-09-29 |
Pile assembly for an offshore structure
Grant 4,696,604 - Finn , et al. September 29, 1 | 1987-09-29 |
Method for establishing a surface consistent correction for the effects of the low velocity layer in seismic data processing
Grant 4,695,984 - Paal September 22, 1 | 1987-09-22 |
Time-offset-frequency-amplitude panels for seismic identification of hydrocarbons
Grant 4,694,438 - Sengupta September 15, 1 | 1987-09-15 |
Method and apparatus for acoustic well logging
Grant 4,685,091 - Chung , et al. August 4, 1 | 1987-08-04 |
Rod-type multipole source for acoustic well logging
Grant 4,682,308 - Chung July 21, 1 | 1987-07-21 |
Apparatus for quick-release of a storage vessel from a riser
Grant 4,677,930 - Ortloff July 7, 1 | 1987-07-07 |
Method of reducing permeability in subterranean formation by use of alkali metal silicate foam
Grant 4,676,318 - Myers , et al. June 30, 1 | 1987-06-30 |
Linear plane perforator
Grant 4,676,309 - Gonzalez June 30, 1 | 1987-06-30 |
Computerized and motorized electromagnetic flux leakage internal diameter tubular inspection device
Grant 4,675,604 - Moyer , et al. June 23, 1 | 1987-06-23 |
Method for displaying acoustic well logging data by producing travel time stacks
Grant 4,672,588 - Willen June 9, 1 | 1987-06-09 |
Method of cementing a casing in a borehole
Grant 4,671,357 - Binder, Jr. June 9, 1 | 1987-06-09 |
Method for reducing friction in drilling operations
Grant 4,665,996 - Foroulis , et al. May 19, 1 | 1987-05-19 |
Method and apparatus for aligning underwater components
Grant 4,661,017 - Wood , et al. April 28, 1 | 1987-04-28 |
Fluid control line switching methods and apparatus
Grant 4,660,647 - Richart April 28, 1 | 1987-04-28 |
Select fire well perforator system and method of operation
Grant 4,656,944 - Gonzalez April 14, 1 | 1987-04-14 |
Shallow water seismic energy source
Grant 4,658,387 - Dolengowski , et al. April 14, 1 | 1987-04-14 |
Method and apparatus for detecting wear of a rotatable bit
Grant 4,655,300 - Davis, Jr. , et al. April 7, 1 | 1987-04-07 |
Apparatus for aligning a platform deck and jacket
Grant 4,655,641 - Weyler April 7, 1 | 1987-04-07 |
Metal seal tubing plug
Grant 4,651,818 - Johnson , et al. March 24, 1 | 1987-03-24 |
Method for determining physical properties of a porous sample using capillary pressure measurement
Grant 4,648,261 - Thompson , et al. March 10, 1 | 1987-03-10 |
Method and apparatus for multipole acoustic wave borehole logging
Grant 4,649,526 - Winbow , et al. March 10, 1 | 1987-03-10 |
Method and apparatus for erecting offshore platforms
Grant 4,648,751 - Coleman March 10, 1 | 1987-03-10 |
Process for remedial cementing
Grant 4,648,453 - Nagra , et al. March 10, 1 | 1987-03-10 |
Multi-channel fiber optic sensor system
Grant 4,649,529 - Avicola March 10, 1 | 1987-03-10 |
Method and apparatus for through-the-flowline gravel packing
Grant 4,646,839 - Rickey March 3, 1 | 1987-03-03 |
Buoyancy system for submerged structural member
Grant 4,630,970 - Gunderson , et al. December 23, 1 | 1986-12-23 |
Method and means for determining physical properties from measurements of microstructure in porous media
Grant 4,628,468 - Thompson , et al. December 9, 1 | 1986-12-09 |
Method and means for determining rock properties using time-domain dielectric spectroscopy
Grant 4,626,773 - Kroeger , et al. December 2, 1 | 1986-12-02 |
Well sand packing prevention method
Grant 4,623,022 - Chakrabarty , et al. November 18, 1 | 1986-11-18 |
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