Assignee
ANADRILL INC
US·24 granted patents·2,431 citations·filing 1986–1991
Top patents by PatentIndex Score
24 records- 0199US5092687ADiamond thrust bearing and method for manufacturing sameANADRILL INC·Filed 1991·Granted Mar 3, 1992·524 cites·44 claims
- 0298US5253939AHigh performance bearing pad for thrust bearingANADRILL INC·Filed 1991·Granted Oct 19, 1993·110 cites·26 claims
- 0395US5063776AMethod and system for measurement of fluid flow in a drilling rig return lineANADRILL INC·Filed 1989·Granted Nov 12, 1991·83 cites·33 claims
- 0495US4958125AMethod and apparatus for determining characteristics of the movement of a rotating drill string including rotation speed and lateral shocksANADRILL INC·Filed 1989·Granted Sep 18, 1990·123 cites·12 claims
- 0594US4805449AApparatus and method for measuring differential pressure while drillingANADRILL INC·Filed 1987·Granted Feb 21, 1989·110 cites·23 claims
- 0691US5139094ADirectional drilling methods and apparatusANADRILL INC·Filed 1991·Granted Aug 18, 1992·158 cites·34 claims
- 0791US4887464AMeasurement system and method for quantitatively determining the concentrations of a plurality of gases in drilling mudANADRILL INC·Filed 1988·Granted Dec 19, 1989·133 cites·23 claims
- 0890US4847815ASinusoidal pressure pulse generator for measurement while drilling toolANADRILL INC·Filed 1987·Granted Jul 11, 1989·111 cites·19 claims
- 0989US4833914APore pressure formation evaluation while drillingANADRILL INC·Filed 1988·Granted May 30, 1989·85 cites·15 claims
- 1088US4739841AMethods and apparatus for controlled directional drilling of boreholesANADRILL INC·Filed 1986·Granted Apr 26, 1988·87 cites·30 claims
- 1186US4760735AMethod and apparatus for investigating drag and torque loss in the drilling processANADRILL INC·Filed 1986·Granted Aug 2, 1988·84 cites·15 claims
- 1282US5146433AMud pump noise cancellation system and methodANADRILL INC·Filed 1991·Granted Sep 8, 1992·83 cites·20 claims
- 1382US4949575AFormation volumetric evaluation while drillingANADRILL INC·Filed 1989·Granted Aug 21, 1990·61 cites·13 claims
- 1482US4852399AMethod for determining drilling conditions while drillingANADRILL INC·Filed 1988·Granted Aug 1, 1989·75 cites·14 claims
- 1581US5154078AKick detection during drillingANADRILL INC·Filed 1990·Granted Oct 13, 1992·90 cites·30 claims
- 1680US5181576ADownhole adjustable stabilizerANADRILL INC·Filed 1991·Granted Jan 26, 1993·76 cites·40 claims
- 1779US4941951AMethod for improving a drilling process by characterizing the hydraulics of the drilling systemANADRILL INC·Filed 1989·Granted Jul 17, 1990·71 cites·13 claims
- 1878US4876886AMethod for detecting drilling events from measurement while drilling sensorsANADRILL INC·Filed 1988·Granted Oct 31, 1989·69 cites·8 claims
- 1977US5033557AHydraulic drilling jarANADRILL INC·Filed 1990·Granted Jul 23, 1991·71 cites·40 claims
- 2075US4956921AMethod to improve directional survey accuracyANADRILL INC·Filed 1989·Granted Sep 18, 1990·56 cites·18 claims
- 2173US5275040AMethod of and apparatus for detecting an influx into a well while drillingANADRILL INC·Filed 1991·Granted Jan 4, 1994·62 cites·6 claims
- 2268US4976143ASystem and method for monitoring drill bit depthANADRILL INC·Filed 1989·Granted Dec 11, 1990·55 cites·12 claims
- 2363US5267398AMethod for manufacturing a diamond thrust bearingANADRILL INC·Filed 1991·Granted Dec 7, 1993·37 cites·21 claims
- 2445US4981036AMethod of determining the porosity of an underground formation being drilledANADRILL INC·Filed 1989·Granted Jan 1, 1991·17 cites·11 claims
Counts cover granted patents and pending applications in the PatentIndex corpus. How scoring works →