Class 73/152.04 - By drill mud analysis

Subclass of Class 73 - Measuring and testing
Definition: Subject matter wherein mud is continuously circulated into
No. of patents: 51
Last issue date: 11/15/2011

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Number	Title	Issue Date
8056408	Downhole measurement of formation characteristics while drilling A method for determining a property of formations surrounding an earth borehole being drilled with a drill bit at the end of a drill string, using drilling fluid that flows downward through the drill string, exits through the drill bit, and returns toward the earth'...	11/15/2011
8011238	Method for correcting the measured concentrations of gas components in drilling mud A method of characterizing formation fluid present in a subsurface earth formation during drilling using methods for correcting the measured concentrations of gas components in drilling mud. Gas trap values for the gas components of interest, light hydrocarbons, are...	09/06/2011
7937999	Estimating formation temperature near a borehole and using same for estimating a property of the formation Apparatus, methods and computer programs disclosed herein, in one aspect, estimate a temperature of a selected region of an earth formation using a virgin formation temperature of the earth formation, a downhole fluid temperature measured over time, an elapsed time ...	05/10/2011
7752906	Downhole measurement of formation characteristics while drilling A method for determining a property of formations surrounding an earth borehole being drilled with a drill bit at the end of a drill string, using drilling fluid that flows downward through the drill string, exits through the drill bit, and returns toward the earth'...	07/13/2010
7458257	Downhole measurement of formation characteristics while drilling A method for determining a property of formations surrounding an earth borehole being drilled with a drill bit at the end of a drill string, using drilling fluid that flows downward through the drill string, exits through the drill bit, and returns toward the earth'...	12/02/2008
7395691	Method and apparatus for determining gas content of subsurface fluids for oil and gas exploration A process to analyze fluid entrained in well boreholes. The process includes gathering trap gas samples from return of drilling mud at multiple depths. The process also includes the steps of subjecting the samples to mass spectrometry in order to determine mass to c...	07/08/2008
7363829	Drill cutting sampler A device for sampling drill cuttings includes a frame, an inclined perforated member mounted on the frame, a sprayer for washing cuttings down over the perforations, and a removable open-topped cuttings collector mounted under the perforated member, the perforated m...	04/29/2008
7357030	Apparatus and methods for determining at least one characteristic of a proximate environment Methods and an apparatus for determining at least one characteristic of an environment are disclosed. A vibrational energy may be imparted into an environment and a magnitude of damping of the vibrational energy may be measured and at least one characteristic of the...	04/15/2008
7337660	Method and system for reservoir characterization in connection with drilling operations A method for analyzing reservoir fluids in connection with a drilling operation includes determining composition and isotopes of injection fluids injected into a wellbore during a drilling operation and production fluids recovered from the wellbore during the drilli...	03/04/2008
7318343	System for detecting gas in a wellbore during drilling A system is provided for detecting the presence of formation gas in a stream of drilling fluid flowing through a wellbore during drilling of the wellbore. The system has at least one sensor chamber connectable to a drill string for drilling the wellbore, each sensor...	01/15/2008
7210342	Method and apparatus for determining gas content of subsurface fluids for oil and gas exploration A process to analyze fluid entrained in well boreholes. The process includes gathering trap gas samples from return of drilling mud at multiple depths. The process also includes the steps of subjecting the samples to mass spectrometry in order to determine mass to c...	05/01/2007
7168310	Accuracy of shaly sand formation evaluation A novel process and methodology in deterministic formation evaluation is provided. The formation evaluation results can accurately quantify formation attributes, such as clay-volume, clay-bound-water, effective-porosity and water saturation in shaly sands. Total-por...	01/30/2007
7153419	Liquid treating device A liquid treating device without any restrictions for a sludge discharge device set above a liquid tank is provided. A cyclone separator adapted to swirl liquid to subject sludge to centrifugal separation from the liquid and precipitate the sludge is connected to th...	12/26/2006
7124030	Mud gas isotope logging interpretive method in oil and gas drilling operations A method of interpreting mud gas samples in a drilling operation of a target area. The method starts with obtaining a plurality of mud gas samples at a plurality of incremental depths of the target area. The plurality of mud gas samples are analyzed to find various ...	10/17/2006
7103982	Determination of borehole azimuth and the azimuthal dependence of borehole parameters A method for determining a borehole azimuth in a borehole is disclosed. In one exemplary embodiment, the method includes acquiring at least one standoff measurement and a tool azimuth measurement at substantially the same time. Such measurements are then processed, ...	09/12/2006
7044237	Drilling system and method A closed-loop circulating system for drilling wells has control of the flow rates in and out of the wellbore. Kicks and fluid losses are quickly controlled by adjusting the backpressure. Kick tolerance and tripping margins are eliminated by real-time determination o...	05/16/2006
7032444	Module for extracting gas from an underground liquid and installation equipped therewith This invention concerns a module for extracting samples in gas phase of compounds present in an underground working liquid, the extractor module including a receptacle for the liquid, associated with a device for stirring the liquid, a liquid inlet duct, a liquid ev...	04/25/2006
6959773	Method for drilling and completing boreholes with electro-rheological fluids In a method for drilling, completing and fracturing a subterranean formation, an electrical potential is applied to oil or synthetic based drilling fluid to increase the viscosity of the fluid and enable the fluid to entrain drill cuttings and proppant. The same bas...	11/01/2005
6719055	Method for drilling and completing boreholes with electro-rheological fluids A method is described for using an electro-rheological fluid as a drilling and completion fluid or as a well service or fracturing fluid. By adjusting the viscosity of the fluid through application of an electrical potential to the fluid, the fluid has enhanced flex...	04/13/2004
6648083	Method and apparatus for measuring mud and formation properties downhole A method is disclosed for determining a characteristic of a mud mixture surrounding a drilling tool within a borehole in which a drilling tool is received. The method includes turning the tool in the borehole. Energy is applied into the borehole from an e...	11/18/2003
6488085	Method and apparatus for well logging and well control A well logging method and apparatus is described, which enables well logging to be conducted while still allowing passage of fluid mud within the well to maintain well control....	12/03/2002
6477886	Apparatus for measuring the amount of air entrained in a fluid An apparatus (1) for measuring the amount of air entrained in the fluid of a power steering pump. The apparatus includes a fluid conduit (3) having a connector (4) adapted to connect to a power steering pump (2) with the fluid conduit (3) in fluid communi...	11/12/2002
6427530	Apparatus and method for formation testing while drilling using combined absolute and differential pressure measurement The present invention provides a tool and method for obtaining at least one parameter of interest such as pressure of a subterranean formation in-situ. The tool comprises a carrier member for conveying the tool into a borehole, at least one selectively ex...	08/06/2002
6389878	Gas trap for drilling mud A gas trap liberates subterranean gases entrained in drilling muds. The trap introduces a stripping gas into a flow of mud gas for liberating mud gases. The trap comprises a pair of opposing truncated right circular vessels and having a concentric bottom ...	05/21/2002
6386026	Cuttings sample catcher and method of use A sample catcher comprises an inclined sampling screw conveyor which intercepts a continuous stream of drill cuttings from a shaker. A vaned metering rotor accepts a plurality of discrete samples from adjacent the conveyor's discharge. The vaned rotor is ...	05/14/2002
6374668	Gas analyzer A gas analyzer for an oil drilling rig normally flows gas captured from a mud pit source through parallel paths from the gas source to a total gas analyzer. One of the paths is a loop path. Periodically the loop path is switched from the source to the tot...	04/23/2002
6308562	Technique for signal detection using adaptive filtering in mud pulse telemetry A mud pulse telemetry adaptive noise canceler (ANC) employs a primary transducer and a reference transducer downstream from a position of the primary transducer. The primary transducer receives a primary signal based on a combination of a transmitted puls...	10/30/2001
6301953	Quantification of drilling mud cuttings characteristics as a measure of relative permeability A method is provided for establishing semi-quantitative values indicative of porosity and permeability of a formation during drilling. A sample of mud is analyzed and the proportions of each grain constituents are classified into their respective grain si...	10/16/2001
6290000	Quantification of the characteristics of porous formations while drilling A method is provided for establishing the quantity and quality of hydrocarbons in the pores of a formation while drilling. One sensor (TG), applied to gas liberated from drilling mud, outputs a signal proportional to the concentration of hydrocarbons. Add...	09/18/2001
6276190	Differential total-gas determination while drilling Apparatus and process is provided for establishing values of the quality of gaseous hydrocarbons in gas extracted from mud while drilling. Two rare earth sensors, without a coating, are exposed to the extracted gas. The first sensor is pre-calibrated and ...	08/21/2001
5909779	Oil-based drilling fluids suitable for drilling in the presence of acidic gases An alkaline-reserve-free, oil-based drilling fluid is disclosed as comprising an oleaginous liquid, and an amine surfactant having the structure R-NH2, wherein R represents a C12 -C22 alkyl group or alkenyl group. Such flu...	06/08/1999
5571962	Method and apparatus for analyzing drill cuttings A method and apparatus for identifying cuttings from a wellbore is disclosed. The cuttings can be identified by measuring emissions such as alpha, beta, or gamma particles which emanate from the cuttings. A continuous wellbore profile of the alpha or beta...	11/05/1996
5372037	Soil sampling apparatus A sampler gathers a portion of borehole cuttings being discharged during a mining drilling operation. The unconfined cuttings are discharged over the sampler while falling to ground surface surrounding the borehole. The sampler diverts a small portion of ...	12/13/1994
5199509	Controlled gas trap system An improved gas trap for mud logging is vertically mounted such that its lower end is constantly beneath the surface of mud flowing in a tank. The mud is drawn into the housing where it is agitated to release the entrained gases which are drawn off for me...	04/06/1993
5165275	Compensated gamma ray mudlog A method and apparatus for measuring the gamma radiation levels of drilling mud expelled from an oil and gas bore hole to determine the composition of the earth at the bottom of the bore hole and, when used in conjunction with a Measurement While Drilling...	11/24/1992
4904603	Monitoring drilling mud The invention in one aspect provides a method of testing drilling mud in use which comprises periodically sampling the circulating mud and analyzing its aqueous filtrate at the rig site by ion chromatography for selected positive and negative ions; one or...	02/27/1990
4887464	Measurement system and method for quantitatively determining the concentrations of a plurality of gases in drilling mud A system for the quantitative analysis of one or more evolving gases exiting a borehole includes a Venturi ejector for substantially capturing liberated gases in the bell nipple and return line, a rotating disk extractor for substantially extracting gases...	12/19/1989
4878382	Method of monitoring the drilling operations by analyzing the circulating drilling mud Samples of mud are taken periodically at the surface at one or several locations where the mud does not contain cuttings anymore. The mud samples are analyzed on the rig site to determine the successive values, as a function of time or depth, of a paramet...	11/07/1989
4860836	Method and apparatus for indicating sample collection times during well drilling A system for eliminating the need for one or more mud loggers on a drilling rig keeps track of the travel of drilling mud injected into the bottom of the well as it moves to the surface of the well with entrapped drill cuttings and gas so that for mud rea...	08/29/1989
4833915	Method and apparatus for detecting formation hydrocarbons in mud returns, and the like A method and logger apparatus for analyzing mud returns to determine the presence of formation hydrocarbons. The logger takes a gas sample from a gas trap formed in the mud return line, purges it of all non-helium gases either by condensing them or chemic...	05/30/1989

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Class 73/152.04 - By drill mud analysis