Halliburton Energy Services, Inc.

Numar Corporation

Dresser Industries, Inc.

Baroid Technology, Inc.

Chen-Kang David Chen

M Vikram Rao

Daniel David Gleitman

Roger Boulton

Colin Walker

Thomas M Gaynor

Paul F Rodney

Manfred G Prammer

George David Goodman

Marian Morys

James H Dudley

Michael Louis Larronde

Roger P Bartel

Dale Allen Jones

Peter Masak

John E Smaardyk

B Raghava Reddy

Larry Steven Eoff

Jimmie Dean Weaver, Jr

Lance Everett Brothers

Frank Zamora

Anthony V Palmer

John Ransford Hardin, Jr

James B Terry

Beegamudre N Murali

John R Hardin

Denise Berryhill

Anne M Culotta

John Michael Wilson

Glenda Wylie

Russell M Fitsgerald

William H Smith, Jr

Anthony Vann Palmer

Dan Gleitman

Georgios L Varsamis

Laurence T Wisniewski

Paul D Beene

Carey R Murphey

Thomas C Gaynor

Vikram M Rao

An assembly and methods for constructing a MONOWELL include a monodiameter casing disposed in a monodiameter wellbore having diametric efficiency with a monobore production delivery system disposed within the monodiameter casing. An assembly for constructing a monodiameter wellbore includes a bottomhole assembly having a overgauge hole drilling member, a directional steering assembly, a measurement while drilling tool, and a logging while drilling tool; a work string attached to the bottomhole assembly and extending to the surface; drilling fluids flowing through the work string and bottomhole assembly; chemical casing casing the borehole; expandable casing disposed in the wellbore; and a sealing composition disposed between the expandable casing and the wellbore.

Method and apparatus for a monodiameter wellbore, monodiameter casing, monobore, and/or monowell

A bottom hole assemblyfor drilling a deviated borehole includes a positive displacement motor (PDM)or a rotary steerable device (RSD)having a substantially uniform diameter motor housing outer surface without stabilizers extending radially therefrom. In a PDM application, the motor housingmay have a fixed bend therein between an upper power sectionand a lower bearing section. The long gauge bitpowered by the motormay have a bit facewith cuttersthereon and a gauge sectionhaving a uniform diameter cylindrical surface. The gauge sectionpreferably has an axial length at least 75% of the bit diameter. The axial spacing between the bit face and the bend of the motor housing preferably is less than twelve times the bit diameter. According to the method of the present invention, the bit may be rotated at a speed of less than 350 rpm by the PDM and/or rotation of the RSD from the surface.

Steerable drilling system and method

An assembly and methods for constructing a MONOWELL includes a monodiameter casing disposed in a monodiameter wellbore having diametric efficiency with a monobore production delivery system disposed within the monodiameter casing. An assembly for constructing a monodiameter wellbore includes a bottomhole assembly having a overgauge hole drilling member, a directional steering assembly, a measurement while drilling tool, and a logging while drilling tool; a work string attached to the bottomhole assembly and extending to the surface; drilling fluids flowing through the work string and bottomhole assembly; chemical casing casing the borehole; expandable casing disposed in the wellbore; and a sealing composition disposed between the expandable casing and the wellbore.

A borehole may be drilled utilizing the bottom hole assemblywith a downhole motor, which may offset at a selected bend angle. A bend for directional drilling may be provided by a PDM, or by a RSD. A gauge sectionsecured to the pilot bithas a uniform diameter bearing surface along an axial length of at least 60% of the pilot bit diameter. The bit or reamerhas a bit face defining the cutting diameter of the drilled hole. The axial spacing between the bend and the bit face is controlled to less than fifteen times the bit diameter. The downhole motor, pilot bit and bit may be retrieved from the well while leaving the casing string in the well.

Drilling with casing

A borehole may be drilled utilizing the bottom hole assemblywith a downhole motor, which may offset at a selected bend angle. A gauge sectionis secured to the bithas a uniform diameter bearing surface along an axial length of at least 60% of the bit diameter. The axial spacing between the bend and the bit face is controlled to less than fifteen times the bit diameter. After drilling a section of the well with the BHA according to the present invention, a tubular may be inserted in the well by passing the tubular through an upper tubular, then the inserted tubular expanded while downhole to a diameter substantially equal to the expanded tubular.

Expanded liner system and method

A method and apparatus for detecting torsional vibration, or stick-slip, in a drill string while drilling is described. The method comprises sampling a downhole pressure sensor and using embedded filter schemes and algorithms to determine, based on the pressure samples, whether torsional vibration is occurring in the drill string. The method may also include sending a warning signal to the surface of the well. The apparatus comprises a downhole assembly having a downhole receiver and a master controller. The downhole receiver comprises a pressure sensor, filter schemes, and algorithms for detecting torsional vibration. The downhole assembly may also include a downhole transmitter for sending a warning signal to the surface of the well.

Method and apparatus for detecting torsional vibration with a downhole pressure sensor

A borehole may be drilled utilizing the bottom hole assemblywith a downhole motor, which may offset at a selected bend angle. The motor housing is preferably run slick, and a gauge sectionsecured to the pilot bithas a uniform diameter bearing surface along an axial length of at least 60% of the pilot bit diameter. The bit or reamerhas a bit face defining the cutting diameter of the drilled hole. The axial spacing between the bend and the bit face is controlled to less than fifteen times the bit diameter. The downhole motor, pilot bit and bit may be retrieved from the well while leaving the casing string in the well.

A steerable bottom hole assembly may be used for drilling both a curved section and straight section of the borehole, with the bottom hole assembly including a reamer beneath the downhole motor. The bottom hole assembly includes a bithaving a bit face defining a bit diameter, and a gauge sectionhaving a substantially uniform diameter cylindrical surface approximating the bit diameter and having an axially length of at least 75% of the bit diameter. The motor is preferably run slick without stabilizers for engaging the wall of the borehole.

Steerable underreaming bottom hole assembly and method

A method for manufacturing NMR measurement-while-drilling tool having the mechanical strength and measurement sensitivity to perform NMR measurements of an earth formation while drilling a borehole, and a method and apparatus for monitoring the motion of the measuring tool in order to take this motion into account when processing NMR signals from the borehole. The tool has a permanent magnet with a magnetic field direction substantially perpendicular to the axis of the borehole, a steel collar of a non-magnetic material surrounding the magnet, antenna positioned outside the collar, and a soft magnetic material positioned in a predetermined relationship with the collar and the magnet that helps to shape the magnetic field of the tool. Due to the non-magnetic collar, the tool can withstand the extreme conditions in the borehole environment while the borehole is being drilled. Motion management apparatus and method are employed to identify time periods when the NMR measurements can be taken without the accuracy of the measurement being affected by the motion of the tool or its spatial orientation.

Method and apparatus for nuclear magnetic resonance measuring while drilling

A bottom hole assembly for drilling a deviated borehole includes a positive displacement motor (PDM) or a rotary steerable device (RSD) having a substantially uniform diameter motor housing outer surface without stabilizers extending radially therefrom. In a PDM application, the motor housing may have a fixed bend therein between an upper power section and a lower bearing section . The long gauge bit powered by the motor may have a bit face with cutters thereon and a gauge section having a uniform diameter cylindrical surface . The gauge section preferably has an axial length at least 75% of the bit diameter. The axial spacing between the bit face and the bend of the motor housing preferably is less than twelve times the bit diameter. According to the method of the present invention, the bit may be rotated at a speed of less than 350 rpm by the PDM and/or rotation of the RSD from the surface.

A steerable bottom hole assembly may be used for drilling both a curved section and straight section of the borehole, with the bottom hole assembly including a reamer beneath the downhole motor The bottom hole assembly includes a bit having a bit face defining a bit diameter, and a gauge section having a substantially uniform diameter cylindrical surface approximating the bit diameter and having an axially length of at least 75% of the bit diameter. The motor is preferably run slick without stabilizers for engaging the wall of the borehole.

An NMR measurement-while-drilling tool having the mechanical strength and measurement sensitivity to perform NMR measurements of an earth formation while drilling a borehole, and a method and apparatus for monitoring the motion of the measuring tool in order to take this motion into account when processing NMR signals from the borehole. The tool has a permanent magnet with a magnetic field direction substantially perpendicular to the axis of the borehole, a steel collar of a non-magnetic material surrounding the magnet, antenna positioned outside the collar, and a soft magnetic material positioned in a predetermined relationship with the collar and the magnet that helps to shape the magnetic field of the tool. Due to the non-magnetic collar, the tool can withstand the extreme conditions in the borehole environment while the borehole is being drilled. Motion management apparatus and method are employed to identify time periods when the NMR measurements can be taken without the accuracy of the measurement being affected by the motion of the tool or its spatial orientation.

Growing community of inventors

Houston, TX, United States of America

Chen-Kang David Chen