US20030127252A1 - Motor Driven Hybrid Rotary Steerable System - Google Patents

Motor Driven Hybrid Rotary Steerable System Download PDF

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Publication number
US20030127252A1
US20030127252A1 US10248054 US24805402A US2003127252A1 US 20030127252 A1 US20030127252 A1 US 20030127252A1 US 10248054 US10248054 US 10248054 US 24805402 A US24805402 A US 24805402A US 2003127252 A1 US2003127252 A1 US 2003127252A1
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drilling
bottom hole
hole assembly
rotary steerable
section
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Abandoned
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US10248054
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Geoff Downton
Steven Hart
John Rowatt
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Schlumberger WCP Ltd
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Schlumberger WCP Ltd
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    • EFIXED CONSTRUCTIONS
    • E21EARTH DRILLING; MINING
    • E21BEARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B7/00Special methods or apparatus for drilling
    • E21B7/04Directional drilling
    • E21B7/06Deflecting the direction of boreholes
    • E21B7/068Deflecting the direction of boreholes drilled by a down-hole drilling motor
    • EFIXED CONSTRUCTIONS
    • E21EARTH DRILLING; MINING
    • E21BEARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B7/00Special methods or apparatus for drilling
    • E21B7/04Directional drilling
    • E21B7/06Deflecting the direction of boreholes
    • E21B7/067Deflecting the direction of boreholes with means for locking sections of a pipe or of a guide for a shaft in angular relation, e.g. adjustable bent sub

Abstract

Abstract of Disclosure
A bottom hole assembly is rotatably adapted for drilling directional boreholes into an earthen formation. It has an upper stabilizer mounted to a collar, and a rotary steerable system. The rotary steerable system has integral drilling motor, an upper section connected to the collar, a steering section, and a drill bit arranged for drilling the borehole attached to the steering section. The steering section is joined at a swivel with the upper section. The steering section is actively tilted about the swivel. A lower stabilizer is mounted upon one of the upper section or the steering section such that the swivel is intermediate the drill bit and the lower stabilizer.

Description

    Background of Invention
  • 1. Field of the Invention.[0001]
  • This invention relates to a bottom hole assembly comprising a rotary steerable directional drilling tool with an integral drilling-motor, which is useful when drilling boreholes into the earth.[0002]
  • 2. Description of the Related Art.[0003]
  • Rotary steerable drilling systems for drilling deviated boreholes into the earth may be generally classified as either "point-the-bit"systems or "push-the-bit"systems. In the point-the-bit system, the axis of rotation of the drill bit is deviated from the local axis of the bottom hole assembly (BHA) in the general direction of the new hole. The hole is propagated in accordance with the customary three point geometry defined by upper and lower stabilizer touch points and the drill bit. The angle of deviation of the drill bit axis coupled with a finite distance between the drill bit and lower stabilizer results in the non-collinear condition required for a curve to be generated. There are many ways in which this may be achieved including a fixed bend at a point in the BHA close to the lower stabilizer or a flexure of the drill bit drive shaft distributed between the upper and lower stabilizer. In its idealized form, the drill bit is not required to cut sideways because the bit axis is continually rotated in the direction of the curved hole. Examples of point-the-bit type rotary steerable systems, and how they operate are described in U.S. Patent Application Publication Nos. 2002/0011359; 2001/0052428 and U.S. Patent Nos. 6,394,193; 6,364,034; 6,244,361; 6,158,529; 6,092,610; and 5,113,953 all herein incorporated by reference. [0004]
  • In the push-the-bit rotary steerable system there is usually no specially identified mechanism to deviate the bit axis from the local BHA axis; instead, the requisite non-collinear condition is achieved by causing either or both of the upper or lower stabilizers to apply an eccentric force or displacement in a direction that is preferentially orientated with respect to the direction of hole propagation. Again, there are many ways in which this may be achieved, including non-rotating (with respect to the hole) eccentric stabilizers (displacement based approaches) and eccentric actuators that apply force to the drill bit in the desired steering direction. Again, steering is achieved by creating non co-linearity between the drill bit and at least two other touch points. In its idealized form the drill bit is required to cut side ways in order to generate a curved hole. Examples of push-the-bit type rotary steerable systems, and how they operate are described in U.S. Patent Nos. 5,265,682; 5,553,678; 5,803,185; 6,089,332; 5,695,015; 5,685,379; 5,706,905; 5,553,679; 5,673,763; 5,520,255; 5,603,385; 5,582,259; 5,778,992; 5,971,085 all herein incorporated by reference. [0005]
  • Although such distinctions between point-the-bit and push-the-bit are useful to broadly distinguish steering systems, a deeper analysis of their hole propagation properties leads one to recognize that facets of both are present in both types of deviated borehole steering systems. For example, a push-the-bit system will have a BHA that is not perfectly stiff, enabling the bit to be effectively pointed and so a proportion of hole curvature is due to the bit being pointed. Conversely, with point-the-bit systems that use a fixed bend offset, a change in hole curvature requires the bit to cut sideways until the new curvature is established. Changes in hole gauge and stabilizer wear effectively cause the bit to be pointed in a particular direction, which may or may not help the steering response, regardless of steering system type. In the extreme, push-the-bit systems that use drill bits with little or no side cutting ability may still achieve limited steering response by virtue of the aforementioned flexibility of the BHA or stabilizer/hole gauge effects.[0006]
  • An additional problem occurs when extremely small bend radiuses are included in the build. Mechanical fatigue in the drill pipe may occur as it is rotated in bending. When the bend is sharp and the drilling rate is slow, the fatigue life of the drill pipe may be exceeded, leading to either "tripping" the pipe to replace it, or failure of the pipe. Neither alternative is acceptable. One way to limit this problem is to drill with a drilling-motor. Since the drilling-motor supplies the majority of the rotation required for drilling, the drill pipe needs only to be rotated at a relative low RPM, just enough to prevent sticking.[0007]
  • Unfortunately, adding a drilling-motor to the BHA can cause the assembly to be too long to easily pass through the bend section to begin drilling. Adding a motor makes the assembly longer - and what ever is beneath the motor is subject to high cyclic bending forces when going through a tight bend. There are numerous other problems as well particularly when the minimum speed of the drilling-motor approaches the maximum speed of the rotary steerable tool. [0008]
  • It is into this broad classification of deviated borehole steering systems that the invention disclosed herein is launched. The hybrid steering system of the present invention incorporates an integral drilling-motor into the rotary steerable system, and combines the advantages of both the classical point-the-bit and push-the-bit systems by incorporating all into a single integral scheme.[0009]
  • Summary of Invention
  • Disclosed herein is a bottom hole assembly that is rotatably adapted for drilling directional boreholes into an earthen formation. It has an upper stabilizer mounted to a collar, and a rotary steerable system. The rotary steerable system has an upper section connected to the collar, a steering section, and a drill bit attached to the steering section. The rotary steerable system is adapted to transmit a torque from the collar to the drill bit. The upper section contains an integral drilling-motor. The steering section is joined at a swivel with the upper section. The steering section is actively tilted about the swivel and has a lower stabilizer. The lower stabilizer is mounted upon one of the upper section or the steering section such that the swivel is intermediate the drill bit and the lower stabilizer.[0010]
  • In this arrangement, the location of the contact between the drill bit and the formation is defined by the offset angle of the axis of the drill bit from the tool axis and the distance between the drill bit and the swivel. The theoretical build rate of the tool is then defined by the radius of curvature of a circle determined by this contact point and the two contact points between the formation and the upper stabilizer and lower stabilizer. The dogleg is also influenced by the side cutting characteristic of the bitA drilling fluid actuated motor system is used to point the portion of the steering section rigidly attached to the drill bit. Such a system utilizes the "free" hydraulic energy available in the drilling fluid as it is pumped through the tool to displace motors and/or pads to control the orientation of the tool while drilling. This minimizes the amount of electrical power that must be developed downhole for toolface control. Further, control of a motor system may be accomplished by numerous mechanical and electrical means, for example rotary disc valves to port drilling fluid to the requite actuators or similar arrangements utilizing solenoid actuated valves, affording great flexibility in implementation.[0011]
  • Brief Description of Drawings
  • Figure 1 is a perspective view of a bottom hole assembly within a borehole in the earth, as typically used in the practice of the present invention.[0012]
  • Figure 2 is a partial section view of one embodiment of the hybrid rotary steerable tool with an integral drilling-motor of the present invention.[0013]
  • Figure 3 is a partial section view of a second embodiment of the hybrid rotary steerable tool with an integral drilling-motor of the present invention.[0014]
  • Figure 4 is a partial section view of one arrangement of the integral drilling-motor of Figure 3.[0015]
  • Figure 5 is a partial section view of a second arrangement of the integral drilling-motor of Figure 3.[0016]
  • Detailed Description
  • Referring now to Figures 1-5, when drilling directional boreholes 4 into earthen formations 6, it is common practice to use a bottom hole assembly as shown in Figure 1. The bottom hole assembly (BHA), generally indicated as 10, is typically connected to the end of the tubular drill string 12 which is typically rotatably driven by a drilling rig 14 from the surface. In addition to providing at least a portion of the motive force for rotating the drill string 12, the drilling rig 14 also supplies a drilling fluid 8, under pressure, through the tubular drill string 12 to the bottom hole assembly 10. The drilling fluid 8 is typically laden with abrasive material, as it is repeatedly re-circulated through the borehole 4. In order to achieve directional control while drilling, components of the bottom hole assembly 10 may include one or more drill collars 16, one or more drill collar stabilizers 18 and a rotary steerable system 20. The rotary steerable system 20 is the lowest component of the BHA 10 and includes an upper section 22 having an integral drilling-motor 50 and also typically housing the electronics and other devices necessary for control of the rotary steerable system 20, and a steering section 24.[0017]
  • The upper section 22 is connected to the last of the drill collars 16 or to any other suitable downhole component. Other components suited for attachment of the rotary steerable system 20 include drilling motors, drill collars, measuring while drilling tools, tubular segments, data communication and control tools, cross-over subs, etc. For convenience in the present specification, all such suitable components will henceforth be referred to as collars 17. An upper stabilizer 26 is attached to one of the collars 17, preferably the one adjacent to the rotary steerable system 20 or to the upper section 22 of the rotary steerable system 20. The steering section 24 includes a drill bit 28. A lower stabilizer 30A may be attached to the upper section 22 or a lower stabilizer 30B may be attached to the steering section 24 but not to both.[0018]
  • A surface control system (not shown) is utilized to communicate steering commands to the electronics in the upper section 22, either directly or via a measuring while drilling module 29 included among the drill collars 16. The drill bit 28 is tilted about a swivel 31 (typically a universal joint 32) mounted in the steering section 24 (as shown in Figures 2 and 3). The swivel 31 itself may transmit the torque from the drill string 12 to the drill bit 28, or the torque may be separately transmitted via other arrangements. Suitable torque transmitting arrangements include many well-known devices such as splined couplings, gearing arrangements, universal joints, and recirculating ball arrangements. These devices may be either integral with the upper section 22 or the steering section 24, or they may be separately attached for ease of repair and/or replacement. The important function of the swivel 31, however, is to provide a 360 degree pivot point for the steering section 24.[0019]
  • The steering section 24 is intermittently actuated by one or more motors 39 about the swivel 31 with respect to the upper section 22 to actively maintain the bit axis 34 pointing in a particular direction while the drill bit 28 is rotated at drill string plus drilling-motor RPM. The term "actively tilted" is meant to differentiate how the rotary steerable system 20 is dynamically oriented as compared to the known fixed displacement units. "Actively tilted" means that the rotary steerable system 20 has no set fixed angular or offset linear displacement. Rather, both angular and offset displacements vary dynamically as the rotary steerable system 20 is operated.[0020]
  • The use of a universal joint 32 as a swivel 31 is desirable in that it may be fitted in a relatively small space and still allow the drill bit axis 34 to be tilted with respect to the rotary steerable system axis 38 such that the direction of drill bit 28 defines the direction of the wellbore 4. That is, the direction of the drill bit 28 leads the direction of the wellbore 4. This allows for the rotary steerable system 20 to drill with little or no side force once a curve is established and minimizes the amount of active control necessary for steering the wellbore 4. Further, the collar 17 can be used to transfer torque to the drill bit 28. This allows a dynamic point-the-bit rotary steerable system 20 to have a higher torque capacity than a static point-the-bit type tool of the same size that relies on a smaller inner structural member for transferring torque to the bit. Although the preferred way of providing a swivel 31 incorporates a torque transmitting device such as a universal joint 32, other devices such as flex connections, splined couplings, ball and socket joints, gearing arrangements, etc. may also be used as a swivel 31.[0021]
  • A particular advantage of this arrangement is that no external part of the bottom hole assembly 10 need ever be stationary with respect to the hole while drilling is in progress. This is important to avoid hang-up on obstructions, it being significantly easier to rotate over such obstructions while running in or out than a straight linear pull.[0022]
  • Referring now to Figures 2 and 3, are shown two embodiments of the rotary steerable system 20 with an integrated drilling-motor. Both embodiments reflect different placements of the lower stabilizer 30A and 30B. The lower stabilizer 30A may be placed on the upper section 22, or the lower stabilizer 30B may be placed on the periphery of the steering section 24, but only on one or the other. This slight difference in the placement of the lower stabilizer 30A, 30B has significant implications on the drilling mechanics of the tool as well as the range of angular deviation of the borehole 4, also known as dogleg capability. [0023]
  • Pistons 40 are the preferred motors 39 acting on the on the periphery of the steering section 24 apply a force to tilt the drill bit 28 with respect to the tool axis such that the direction of drill bit 28 broadly defines the direction of the well. The pistons 40 may be sequentially actuated as the steering section 24 rotates, so that the tilt of the drill bit is actively maintained in the desired direction with respect to the formation 6 being drilled. Alternately, the pistons 40 may be intermittently actuated in a random manner, or in a directionally-weighted semi-random manner to provide for less aggressive steering, as the steering section 24 rotates. There are also events during drilling when it may be desirable to activate either all or none of the pistons 40 simultaneously.[0024]
  • When the lower stabilizer 30A is located on the upper section 22, the rotary steerable system 20 steers in a manner similar to a classical point-the-bit system after a curve is established in the borehole 4. This arrangement relies primarily upon the end cutting action of the drill bit 28 for steering when drilling with an established curvature.[0025]
  • The mode is different, however, when the borehole curvature is changed or first being established. The force applied by the pistons 40 urges the drill bit so that it gradually tilts as it drills forward. It is the application of a force in this manner that provides the desirable push-the-bit mode when initially establishing, or consequently changing, the curvature of the borehole 4. Although this arrangement is an improvement over a pure point-the-bit system of the prior art, the steering mode during curvature changes is still partially point-the-bit, because both side cutting and end cutting of the bit are required.[0026]
  • Even so, this mode is clearly different than the traditional fixed bent-sub means for changing hole curvature. Therefore, this arrangement has advantages over the prior art because the drill bit is not forced into a set tilting displacement, as is common with similarly configured steerable systems of the prior art.[0027]
  • When the lower stabilizer 30A is located on the upper section 22, the location of the contact 42 between the drill bit 28 and the formation 6 is defined by the offset angle of the axis 44 of the drill bit 28 from the tool axis 38 and the distance between the drill bit 28 and the swivel 31.[0028]
  • When lower stabilizer 30B is placed on the periphery of the steering section 24, it provides a different steering topology. This arrangement defines two points of contact on the periphery of the steering section 24 and the formation 6 (i.e., contact at the drill bit 28 and the lower stabilizer 30B). As such, this arrangement steers like both a push-the-bit and point-the-bit system. Specifically, the periphery of the steering section 24 acts as a short rigid member with a drill bit 28 at its lower end and a nearly full gauge stabilizer 30B at its upper end. This geometry limits how much the periphery of the steering section 24 can tilt with respect to the tool axis 38. The periphery of the steering section 24 will tilt until the lower stabilizer 30B contacts the formation 6 at which point the motors 39 then act to push-the-bit through the formation 6, relying primarily on the side cutting action of the drill bit 28. As the formation 6 is removed by the side cutting action of the drill bit 28, the periphery of the steering section 24 is allowed to tilt further with respect to the tool axis 38 (i.e., the geometric constraint imposed by the formation 6 is removed) and the tool then begins to steer as a point-the-bit system, relying primarily on the end cutting action of the bit.[0029]
  • Analysis shows that by combining aspects of both push-the-bit and point-the-bit systems, this arrangement of the hybrid design affords a means of achieving higher build rates than a point-the-bit system with the same angular deflection of the steering section 24. The theoretical build rate of the tool is then defined by the radius of curvature of a circle determined by this contact point 42 and the two contact points 46, 48 between the formation and the upper stabilizer 26 and lower stabilizer 30B.[0030]
  • The dogleg response for the hybrid rotary steerable system 20 where the lower stabilizer 30B is mounted on the steering section 24 due to changes in actuator displacement (ecc) using consistent units is: [0031] Dogleg ( deg / 30 m ) = ecc * ( d - a ) ( b - a ) ( 1 + K * c ) - u * ( 1 + K * d ) + w * ( 1 + K * c ) - c 2 * ( 1 + K * d ) + d 2 * ( 1 + K * c )
    Figure US20030127252A1-20030710-M00001
  • Where (displacement in meters):ecc= displacement of motors 39 contributing to deflection of the swivel 31.[0032]
  • u= the extent of under gauge at the touch point 48 at the lower stabilizer 30B on the steering section 24 of the rotary steerable system 20.[0033]
  • w = the extent of under gauge at the touch point 46 at upper stabilizer 26.[0034]
  • a= distance from bit to the swivel 31.[0035]
  • b= distance from bit to motor 39.[0036]
  • c= distance from bit 28 to lower stabilizer 30B on the rotary steerable system 20.[0037]
  • d= distance from bit 28 to upper stabilizer 26.[0038]
  • K = a factor depending on the bits ability to cut sideways, in units of per meter. (K=0 for a bit with no side cutting ability, K= infinity for a highly aggressive bit).[0039]
  • To this dogleg capability is added the effects of any BHA flexure, which according to sense may increase or reduce the effective response.[0040]
  • Both arrangements for the lower stabilizer 30A, 30B utilize an integrated drilling-motor 50 to provide rotary energy to effect drilling by the drill bit 28.[0041]
  • As shown in Figures 2-5, a drilling-motor 50 is integrated into the upper section. The drilling-motor 50 has a drive-shaft 52 which, as shown in figure 2, may be adapted to drive the lower stabilizer 30A, 30B whether mounted on either the upper section 22 or the steering section 24, in addition to the drill bit 28. In the embodiments shown in figures 3-5 the drive-shaft 52 may be extended to the steering section to drive just the steering section 24 and/or the drill bit 28. The drilling-motor 50 provides rotational energy in addition to that supplied by the drill rig 14 to the rotary steering system 20, as will be described.[0042]
  • The portion of the motive force for rotating the drill string 12 provided by the drilling rig 14 has a rate which is indicated by R1 in Figures 2 and 3. The addition of the integral drilling-motor 50 provides additional motive force for rotating the rotary steerable system 20, which is additive to that supplied by the drilling rig 14. The sum of the rate of this additional motive force and R1 is indicated by R2. For example, if the drilling rig 14 rotated the drill string 12 at say, 50 RPM, R1 would equal 50 RPM. If the drilling motor were simultaneously operated at say, 150 RPM, R2 would equal 200 RPM.[0043]
  • Because higher RPM"s tend to lead to faster wear and/or fatigue of the downhole components, it is desirable to rotate these wearable/fatigue-able components as slowly as possible. However, some rotation is often (although not necessarily always) supplied to the entire drill string 12 to help avoid sticking and other problems. [0044]
  • The different drive-shaft 52 arrangements of the drilling-motor 50 allow designers to trade-off differing levels of design complexity for differing arrangements of wear and fatigue prone components, to achieve varying degrees of improvement.[0045]
  • As illustrated in Figure 3, the drive-shaft 52 of the drilling-motor 50 may be arranged to drive the portion of the upper section 22 where the lower stabilizer 30A may be mounted. This would allow the drill string 14 to the collars 17 to be rotated at R1 and the working components of the rotary steerable system 20 to rotate at R2. This rather straightforward arrangement spares the majority of the BHA from the higher rates of wear and fatigue encountered if the entire drill string 12 were rotated fast enough for effective drilling. However, all the wearable/fatigue-able components of the rotary steerable system 20 are exposed to the higher rate R2.[0046]
  • In a second arrangement, shown in Figures 3 and 4, the drive-shaft 52 extends well beyond the drilling-motor 50 to a location on the upper section 22 beyond where the lower stabilizer 30A may be mounted. This allows the drill string 14 to the lower stabilizer 30A to be rotated at R1 and the other working components of the rotary steerable system 20 to rotate at R2. This more complex arrangement reduces wear of the lower stabilizer 30A. Bearings 54 are suitably located to allow the various sections of the upper section 22 to rotate with respect to each other. These bearings 54 may be arranged to accommodate axial push and pull loads as well as radial loads.[0047]
  • In a third arrangement, shown in Figure 5, the drive-shaft 52 extends all the way from the drilling-motor 50 to the center of the swivel 31. This allows the entire drill string 14 up to the drill bit 28 to be rotated at R1, and only the drill bit 28 to be rotated at R2. This arrangement requires a complex swivel 31 configuration with an inner swivel portion 56 to carry the power supplied by the drilling motor to be transmitted directly to the drill bit 28, and an outer swivel portion 58 to transmit the torque and tilt of the steering section 24 to the upper section 22. As previously described, flexible collars, joints, and other means may be used in the swivel arrangement and to transfer torque.[0048]
  • This is the most complex arrangement, but it also provides the greatest benefit for reduction of wear and fatigue, and also provides maximum operating flexibility.[0049]
  • The bottom hole assembly 10 of the preferred embodiment is therefore rotatably adapted for drilling directional boreholes 4 into an earthen formation 6. It has an upper stabilizer 26 mounted to a collar 17, and a rotary steerable system 20. The rotary steerable system 20 has an upper section 22 connected to the collar 17, a steering section 24, and a drill bit 28 arranged for drilling the borehole 4 attached to the steering section 24. The upper section 22 has an integral drilling-motor. The rotary steerable system 20 is adapted to transmit a torque from the collar 17 to the drill bit 28. The steering section 24 is joined at a swivel 31 with the upper section 22. The steering section 24 is actively tilted about the swivel 31. A lower stabilizer 30A, 30B is mounted upon one of the upper section 22 or the steering section 24 such that the swivel 31 is intermediate the drill bit 28 and the lower stabilizer 30B.[0050]
  • In the preferred embodiments, a drilling fluid 8 actuated piston 40 is the motor 39 system used to point the portion of the steering section 24 rigidly attached to the drill bit 28. Such a system utilizes the "free"hydraulic energy available in the drilling fluid as it is pumped through the tool to displace motors 39 and/or pads to control the orientation of the tool while drilling. This minimizes the amount of electrical power that must be developed downhole for toolface control. Further, control of a motor 39 system may be accomplished by numerous mechanical and electrical means, for example rotary disc valves to port drilling fluid 8 to the requite actuators or similar arrangements utilizing electrically or mechanically actuated valves, affording great flexibility in implementation.[0051]
  • There are numerous advantages to control with electrically controlled valve actuators. For example, rotary steerable systems are often rotated while the drill bit 28 is pulled back from the formation 6, and therefore not drilling. This may be necessary for hole cleaning, etc. During these times, the control system still causes the motors 39 to actuate, causing unnecessary wear. An actuator may be used to shut off the drilling fluid 8 flow to the rotary disc valve when the system is required to be in neutral. This arrangement would lower the wear experienced by the moving parts when the system is rotating.[0052]
  • In order to create a pressure drop to provide the "free" power, rotary steerable systems 20 typically use a choke which is intended to drop the pressure of the drilling fluid 8 supplied to the rotary valve in the case of operating conditions involving high drill bit pressures drops. By incorporating an actuator in the passage to shut off the supply of drilling fluid 8 to the rotary valve, the motors 39 may be shut down independently of the rotary valve.[0053]
  • Another condition where rotation is needed without actuation of the motors 39 is when a zero percentage dogleg condition is being demanded. Again, under these circumstances, the control system would activate the valve to shut off the drilling fluid 8 supply to the rotary valve. This effectively holds a neutral steering condition, minimizing wear of the moving parts and proportionality increase service life. As most of the drilling conditions involve low percentage steering conditions the life of the critical wear items would be considerably enhanced.[0054]
  • Suitable electrically controlled actuators for these various applications include solenoids, stepping motors, pilot controlled devices, mechanical or electrical direct activated bi-stable devices, and variants such as electro-magnetic ratcheting devices, thermally activated bi-stable devices, etc.[0055]
  • In a preferred embodiment, the swivel 31 is a universal joint 32. This may be a two-degree of freedom universal joint 32 that allows for rotation of the periphery of the steering section 24 around its axis 34, a variable offset angle, and also torque transfer. The maximum offset angle of the periphery of the steering section 24 is limited as will be described. The universal joint 32 transfers torque from the collar 17 to the periphery of the steering section 24.[0056]
  • Weight is transferred from the collar 17 to the periphery of the steering section 24. The universal joint 32 and other internal parts preferably operate in oil compensated to annulus drilling fluid 8 pressure. The offset of the periphery of the steering section 24 and the contact points 42, 46, and 48 between the well bore 4 and the drill bit 28, the lower stabilizer 30B and the upper stabilizer 26 define the geometry for three point bending and dictate the dog leg capability of the tool.[0057]
  • A set of internal drilling fluid 8 actuated motors 39, preferably pistons 40, is located within the periphery of the steering section 24. The drilling fluid 8 may act directly on the pistons 40, or it may act indirectly through a power transmitting device from the drilling fluid 8 to an isolated working fluid such as an oil. The pistons 40 are equally spaced and extended in the radial direction. The pistons 40 are housed within the steering section 24 and operate on differential pressure developed by the pressure drop across the drill bit 28. When actuated (synchronous with drill string rotation), these pistons 40 extend and exert forces on the periphery of the steering section 24 so as to actively maintain it in a geostationary orientation and thus a fixed toolface.[0058]
  • The control system governing the timing of the drilling fluid 8 actuator activation is typically housed in the upper section 22 and utilizes feedback data from onboard sensors and or an MWD system to determine tool face and tool face error.[0059]
  • Whereas the present invention has been described in particular relation to the drawings attached hereto, it should be understood that other and further modifications apart from those shown or suggested herein, may be made within the scope and spirit of the present invention.[0060]

Claims (12)

    Claims
  1. 1. What is claimed is:
    1. A bottom hole assembly rotatably adapted for drilling directional boreholes into an earthen formation comprising an upper stabilizer mounted to a collar, and a rotary steerable system, the rotary steerable system comprising an upper section connected to the collar, a steering section, and a drill bit attached to the steering section, the rotary steerable system adapted to transmit a torque from the collar to the drill bit, the upper section comprising an integral drilling-motor, the steering section joined at a swivel with the upper section, the steering section actively tilted about the swivel and comprising a lower stabilizer, wherein the lower stabilizer is mounted upon one of the upper section or the steering section such that the swivel is intermediate the drill bit and the lower stabilizer.
  2. 2. The bottom hole assembly of claim 1 wherein the steering section is actively tilted by a plurality of activated motors to maintain a desired drilling direction as the bottom hole assembly rotates
    3. The bottom hole assembly of claim 1 wherein no portion of the rotary steerable system exposed to the earthen formation is stationary with respect to the earthen formation while drilling.
  3. 3. 4. The bottom hole assembly of claim 1 wherein the rotary steerable system acts as a point-the-bit system after a curve is established in the borehole and as a push-the-bit system while establishing the curve.
  4. 4. 5. The bottom hole assembly of claim 2 wherein control of at least one of the motors is accomplished by porting a drilling fluid with a rotary disc valve or with an electrically actuated valve.
  5. 5. 6. The bottom hole assembly of claim 5 wherein the electrically actuated valve is selected from a group consisting of solenoids, stepping motors, direct activated bi-stable devices, electro-magnetic ratcheting devices, and thermally activated bi-stable devices.
  6. 6. 7. The bottom hole assembly of claim 2 wherein control of at least one of the motors is accomplished by porting a drilling fluid with a rotary disc valve and an electrically actuated valve.
  7. 7. 8. The bottom hole assembly of claim 7 wherein the electrically actuated valve is arranged in a passage to shut off the supply of the drilling fluid to the motor independently of the rotary valve.
  8. 8. 9. The bottom hole assembly of claim 8 wherein the supply of drilling fluid is shut off in response to a condition where rotation is needed without actuation of the motor.
  9. 9. 10. The bottom hole assembly of claim 9 wherein the rotary steerable system is effectively held in a neutral steering condition while drilling continues, minimizing wear of moving parts.
  10. 10. 11. The bottom hole assembly of claim 8 wherein the electrically actuated valve is selected from a group consisting of solenoids, stepping motors, direct activated bi-stable devices, electro-magnetic ratcheting devices, and thermally activated bi-stable devices.
  11. 11. 12. The bottom hole assembly of claim 1 wherein the swivel is a two-degree of freedom universal joint.
  12. 12. 13. The bottom hole assembly of claim 2 wherein at least one of the motors is a drilling fluid powered piston.
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Cited By (30)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20030121702A1 (en) * 2001-12-19 2003-07-03 Geoff Downton Hybrid Rotary Steerable System
US20040262044A1 (en) * 2003-04-25 2004-12-30 Stuart Schaaf Systems and methods for directionally drilling a borehole using a continuously variable transmission
US20060254819A1 (en) * 2005-05-12 2006-11-16 Moriarty Keith A Apparatus and method for measuring while drilling
US20070205020A1 (en) * 2004-10-28 2007-09-06 Williams Danny T Formation dip geo-steering method
US20070251726A1 (en) * 2006-04-28 2007-11-01 Schlumberger Technology Corporation Rotary Steerable Drilling System
US20070261887A1 (en) * 2006-05-11 2007-11-15 Satish Pai Steering Systems for Coiled Tubing Drilling
US20080149394A1 (en) * 2006-12-21 2008-06-26 Schlumberger Technology Corporation Steering system
US20090151939A1 (en) * 2007-12-13 2009-06-18 Schlumberger Technology Corporation Surface tagging system with wired tubulars
US20100193184A1 (en) * 2007-12-13 2010-08-05 Lee Dolman System and method of monitoring flow in a wellbore
US20110042144A1 (en) * 2007-12-21 2011-02-24 Downton Geoffrey C Steerable drilling system
US20110100716A1 (en) * 2007-12-19 2011-05-05 Michael Shepherd Steerable system
US20110139512A1 (en) * 2009-12-11 2011-06-16 Kjell Haugvaldstad Actuators, actuatable joints, and methods of directional drilling
US20110266063A1 (en) * 2003-11-26 2011-11-03 Geoff Downton Steerable drilling system
WO2011160027A2 (en) * 2010-06-18 2011-12-22 7Schlumberger Canada Limited Oil operated rotary steerable system
WO2011158111A2 (en) * 2010-06-18 2011-12-22 Schlumberger Canada Limited Rotary steerable tool actuator tool face control
US20120145458A1 (en) * 2007-06-26 2012-06-14 Fleming And Company, Pharmaceutical Rotary steerable drilling system
US8602104B2 (en) * 2010-11-29 2013-12-10 Schlumberger Technology Corporation Bi-stable valve
WO2014047599A1 (en) * 2012-09-24 2014-03-27 Schlumberger Canada Limited Positive displacement motor (pdm) rotary steerable system (rss) and apparatus
US8875806B2 (en) 2004-10-28 2014-11-04 Danny T. Williams Formation dip geo-steering method
US8960326B2 (en) 2004-10-28 2015-02-24 Danny T. Williams Formation dip geo-steering method
US9057223B2 (en) 2012-06-21 2015-06-16 Schlumberger Technology Corporation Directional drilling system
US9187956B2 (en) 2011-09-27 2015-11-17 Richard Hutton Point the bit rotary steerable system
CN105637164A (en) * 2013-10-25 2016-06-01 普拉德研究及开发股份有限公司 Multi-angle rotary steerable drilling
WO2016154373A1 (en) * 2015-03-24 2016-09-29 Baker Hughes Incorporated Self-adjusting directional drilling apparatus and methods for drilling directional wells
US9464482B1 (en) 2016-01-06 2016-10-11 Isodrill, Llc Rotary steerable drilling tool
US9556679B2 (en) 2011-08-19 2017-01-31 Precision Energy Services, Inc. Rotary steerable assembly inhibiting counterclockwise whirl during directional drilling
US9624727B1 (en) 2016-02-18 2017-04-18 D-Tech (Uk) Ltd. Rotary bit pushing system
US9657561B1 (en) 2016-01-06 2017-05-23 Isodrill, Inc. Downhole power conversion and management using a dynamically variable displacement pump
WO2018057698A1 (en) * 2016-09-23 2018-03-29 Baker Hughes, A Ge Company, Llc Drilling apparatus using a self-adjusting deflection device and directional sensors for drilling directional wells
US9982486B2 (en) * 2013-06-14 2018-05-29 Lkab Wassara Ab Arrangement and down-the-hole drilling equipment for angular setting of a drill string

Families Citing this family (46)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7228918B2 (en) * 2003-05-05 2007-06-12 Baker Hughes Incorporated System and method for forming an underground bore
EP1967888A3 (en) * 2003-10-08 2009-01-14 E-Ink Corporation Electro-wetting displays
GB2408757B (en) * 2003-12-06 2006-11-15 Schlumberger Holdings Actuator Valve and Bias Unit
GB0413901D0 (en) * 2004-06-22 2004-07-21 Smart Stabilizer Systems Ltd Steerable drill bit arrangement
US20090229888A1 (en) * 2005-08-08 2009-09-17 Shilin Chen Methods and systems for designing and/or selecting drilling equipment using predictions of rotary drill bit walk
US7860693B2 (en) * 2005-08-08 2010-12-28 Halliburton Energy Services, Inc. Methods and systems for designing and/or selecting drilling equipment using predictions of rotary drill bit walk
FR2898935B1 (en) * 2006-03-27 2008-07-04 Francois Guy Jacques Re Millet Apparatus drilling tool orientation
US8967296B2 (en) * 2006-05-31 2015-03-03 Schlumberger Technology Corporation Rotary steerable drilling apparatus and method
WO2008013458A1 (en) * 2006-07-24 2008-01-31 Sira-Kvina Kraftselskap Da A method and a device for directional control of a rock drilling machine
GB0615883D0 (en) * 2006-08-10 2006-09-20 Meciria Ltd Steerable rotary directional drilling tool for drilling boreholes
US7669669B2 (en) * 2007-07-30 2010-03-02 Schlumberger Technology Corporation Tool face sensor method
US8757294B2 (en) 2007-08-15 2014-06-24 Schlumberger Technology Corporation System and method for controlling a drilling system for drilling a borehole in an earth formation
US20100038141A1 (en) 2007-08-15 2010-02-18 Schlumberger Technology Corporation Compliantly coupled gauge pad system with movable gauge pads
US8720604B2 (en) 2007-08-15 2014-05-13 Schlumberger Technology Corporation Method and system for steering a directional drilling system
US8727036B2 (en) 2007-08-15 2014-05-20 Schlumberger Technology Corporation System and method for drilling
US8534380B2 (en) 2007-08-15 2013-09-17 Schlumberger Technology Corporation System and method for directional drilling a borehole with a rotary drilling system
US8066085B2 (en) 2007-08-15 2011-11-29 Schlumberger Technology Corporation Stochastic bit noise control
CA2694868A1 (en) * 2007-08-15 2009-02-19 Schlumberger Canada Limited Method and system for steering a directional drilling system
US8763726B2 (en) 2007-08-15 2014-07-01 Schlumberger Technology Corporation Drill bit gauge pad control
CA2706343C (en) * 2007-12-14 2016-08-23 Halliburton Energy Services, Inc. Methods and systems to predict rotary drill bit walk and to design rotary drill bits and other downhole tools
JP5662804B2 (en) 2007-12-18 2015-02-04 シュルンベルジェ ホールディングス リミテッドSchlnmberger Holdings Limited System and method for improving the surface electromagnetic survey
US8960329B2 (en) * 2008-07-11 2015-02-24 Schlumberger Technology Corporation Steerable piloted drill bit, drill system, and method of drilling curved boreholes
US7878267B2 (en) 2008-11-10 2011-02-01 Southard Drilling Technologies, L.P. Rotary directional drilling apparatus and method of use
US8157024B2 (en) 2008-12-04 2012-04-17 Schlumberger Technology Corporation Ball piston steering devices and methods of use
US20100243575A1 (en) * 2009-03-26 2010-09-30 Charles Jerold Nowling Portable sludge filtration system
CA2736398A1 (en) 2009-08-17 2011-02-24 Magnum Drilling Services, Inc. Inclination measurement devices and methods of use
US8235145B2 (en) * 2009-12-11 2012-08-07 Schlumberger Technology Corporation Gauge pads, cutters, rotary components, and methods for directional drilling
US8403332B2 (en) * 2009-12-28 2013-03-26 Nissan Kogyo Co., Ltd Seal member
US8614273B2 (en) * 2009-12-28 2013-12-24 Nissin Kogyo Co., Ltd. Seal member
US20110156357A1 (en) * 2009-12-28 2011-06-30 Nissin Kogyo Co., Ltd. Dynamic seal member
WO2011126760A3 (en) 2010-03-30 2013-03-14 Gyrodata, Incorporated Bending of a shaft of a steerable borehole drilling tool
US9803426B2 (en) 2010-06-18 2017-10-31 Schlumberger Technology Corporation Flex joint for downhole drilling applications
FR2963945B1 (en) 2010-08-20 2013-05-10 Breakthrough Design ring device for radial displacements of subsequently assembled bodies between them
US8602094B2 (en) 2011-09-07 2013-12-10 Schlumberger Technology Corporation Method for downhole electrical transmission by forming an electrical connection with components capable of relative rotational movement
FR2980814B1 (en) 2011-10-04 2015-12-25 Breakthrough Design Means and method for stabilization and energy storage of a drilling system directs
US9303457B2 (en) 2012-08-15 2016-04-05 Schlumberger Technology Corporation Directional drilling using magnetic biasing
US9970235B2 (en) * 2012-10-15 2018-05-15 Bertrand Lacour Rotary steerable drilling system for drilling a borehole in an earth formation
US9371696B2 (en) * 2012-12-28 2016-06-21 Baker Hughes Incorporated Apparatus and method for drilling deviated wellbores that utilizes an internally tilted drive shaft in a drilling assembly
US9617791B2 (en) 2013-03-14 2017-04-11 Smith International, Inc. Sidetracking system and related methods
JP2015098576A (en) 2013-10-17 2015-05-28 日信工業株式会社 Manufacturing method of rubber composition and rubber composition
CA2928467C (en) 2013-11-25 2018-04-24 Halliburton Energy Services, Inc. Rotary steerable drilling system
GB201605231D0 (en) * 2013-12-05 2016-05-11 Halliburton Energy Services Inc Directional casing-while-drilling
US10006249B2 (en) 2014-07-24 2018-06-26 Schlumberger Technology Corporation Inverted wellbore drilling motor
US9109402B1 (en) 2014-10-09 2015-08-18 Tercel Ip Ltd. Steering assembly for directional drilling of a wellbore
US20160108679A1 (en) * 2014-10-15 2016-04-21 Schlumberger Technology Corporation Pad in Bit Articulated Rotary Steerable System
CN105484668B (en) * 2015-11-20 2017-08-29 西南石油大学 Precise positioning of the guide head deflection of a new A tool

Citations (96)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2319236A (en) * 1940-08-22 1943-05-18 Sperry Sun Well Surveying Co Deflecting tool
US2345766A (en) * 1940-12-02 1944-04-04 Eastman Oil Well Survey Co Deflecting tool
US2585207A (en) * 1950-10-11 1952-02-12 John A Zublin Apparatus for drilling lateral bores deviating from vertical well bores
US2712434A (en) * 1953-11-23 1955-07-05 Melvin L Giles Directional drilling tool
US2876992A (en) * 1954-11-04 1959-03-10 Eastman Oil Well Survey Co Deflecting tools
US3092188A (en) * 1961-07-31 1963-06-04 Whipstock Inc Directional drilling tool
US3098534A (en) * 1960-06-14 1963-07-23 Carr Warren Farrell Directional drill with hydraulically extended shoe
US3123162A (en) * 1964-03-03 Xsill string stabilizer
US3129776A (en) * 1960-03-16 1964-04-21 William L Mann Full bore deflection drilling apparatus
US3305771A (en) * 1963-08-30 1967-02-21 Arps Corp Inductive resistivity guard logging apparatus including toroidal coils mounted on a conductive stem
US3309656A (en) * 1964-06-10 1967-03-14 Mobil Oil Corp Logging-while-drilling system
US3370657A (en) * 1965-10-24 1968-02-27 Trudril Inc Stabilizer and deflecting tool
US3457999A (en) * 1967-08-31 1969-07-29 Intern Systems & Controls Corp Fluid actuated directional drilling sub
US3512592A (en) * 1968-03-14 1970-05-19 Exxon Production Research Co Offshore drilling method and apparatus
US3561549A (en) * 1968-06-07 1971-02-09 Smith Ind International Inc Slant drilling tools for oil wells
US3575247A (en) * 1969-03-06 1971-04-20 Shell Oil Co Diamond bit unit
US3637032A (en) * 1970-01-22 1972-01-25 John D Jeter Directional drilling apparatus
US3667556A (en) * 1970-01-05 1972-06-06 John Keller Henderson Directional drilling apparatus
US3743034A (en) * 1971-05-03 1973-07-03 Shell Oil Co Steerable drill string
US3799279A (en) * 1972-09-25 1974-03-26 R Farris Optionally stabilized drilling tool
US3878903A (en) * 1973-12-04 1975-04-22 Martin Dee Cherrington Apparatus and process for drilling underground arcuate paths
US3888319A (en) * 1973-11-26 1975-06-10 Continental Oil Co Control system for a drilling apparatus
US4022287A (en) * 1976-04-20 1977-05-10 Sandvik Aktiebolag Percussion drill bit
US4027301A (en) * 1975-04-21 1977-05-31 Sun Oil Company Of Pennsylvania System for serially transmitting parallel digital data
US4076084A (en) * 1973-07-16 1978-02-28 Amoco Production Company Oriented drilling tool
US4080115A (en) * 1976-09-27 1978-03-21 A-Z International Tool Company Progressive cavity drive train
US4152545A (en) * 1965-04-05 1979-05-01 Martin Marietta Corporation Pulse position modulation secret communication system
US4184553A (en) * 1978-10-25 1980-01-22 Conoco, Inc. Method for controlling direction of horizontal borehole
US4185704A (en) * 1978-05-03 1980-01-29 Maurer Engineering Inc. Directional drilling apparatus
US4190123A (en) * 1977-07-20 1980-02-26 John Roddy Rock drill bit loading device
US4211292A (en) * 1978-07-27 1980-07-08 Evans Robert F Borehole angle control by gage corner removal effects
US4270619A (en) * 1979-10-03 1981-06-02 Base Jimmy D Downhole stabilizing tool with actuator assembly and method for using same
US4388974A (en) * 1981-04-13 1983-06-21 Conoco Inc. Variable diameter drill rod stabilizer
US4394881A (en) * 1980-06-12 1983-07-26 Shirley Kirk R Drill steering apparatus
US4428441A (en) * 1979-04-04 1984-01-31 Mobil Oil Corporation Method and apparatus for reducing the differential pressure sticking tendency of a drill string
US4449595A (en) * 1982-05-17 1984-05-22 Holbert Don R Method and apparatus for drilling a curved bore
US4456080A (en) * 1980-09-19 1984-06-26 Holbert Don R Stabilizer method and apparatus for earth-boring operations
US4461359A (en) * 1982-04-23 1984-07-24 Conoco Inc. Rotary drill indexing system
US4491187A (en) * 1982-06-01 1985-01-01 Russell Larry R Surface controlled auxiliary blade stabilizer
US4492276A (en) * 1982-11-17 1985-01-08 Shell Oil Company Down-hole drilling motor and method for directional drilling of boreholes
US4515225A (en) * 1982-01-29 1985-05-07 Smith International, Inc. Mud energized electrical generating method and means
US4523652A (en) * 1983-07-01 1985-06-18 Atlantic Richfield Company Drainhole drilling assembly and method
US4572305A (en) * 1983-01-27 1986-02-25 George Swietlik Drilling apparatus
US4577701A (en) * 1984-08-08 1986-03-25 Mobil Oil Corporation System of drilling deviated wellbores
US4635736A (en) * 1985-11-22 1987-01-13 Shirley Kirk R Drill steering apparatus
US4637479A (en) * 1985-05-31 1987-01-20 Schlumberger Technology Corporation Methods and apparatus for controlled directional drilling of boreholes
US4638873A (en) * 1984-05-23 1987-01-27 Welborn Austin E Direction and angle maintenance tool and method for adjusting and maintaining the angle of deviation of a directionally drilled borehole
US4655289A (en) * 1985-10-04 1987-04-07 Petro-Design, Inc. Remote control selector valve
US4662458A (en) * 1985-10-23 1987-05-05 Nl Industries, Inc. Method and apparatus for bottom hole measurement
US4667751A (en) * 1985-10-11 1987-05-26 Smith International, Inc. System and method for controlled directional drilling
US4732223A (en) * 1984-06-12 1988-03-22 Universal Downhole Controls, Ltd. Controllable downhole directional drilling tool
US4739843A (en) * 1986-05-12 1988-04-26 Sidewinder Tool Joint Venture Apparatus for lateral drilling in oil and gas wells
US4807708A (en) * 1985-12-02 1989-02-28 Drilex Uk Limited And Eastman Christensen Company Directional drilling of a drill string
US4811798A (en) * 1986-10-30 1989-03-14 Team Construction And Fabrication, Inc. Drilling motor deviation tool
US4821815A (en) * 1986-05-22 1989-04-18 Flowmole Corporation Technique for providing an underground tunnel utilizing a powered boring device
US4821817A (en) * 1985-01-07 1989-04-18 Smf International Actuator for an appliance associated with a ducted body, especially a drill rod
US4836301A (en) * 1986-05-16 1989-06-06 Shell Oil Company Method and apparatus for directional drilling
US4842083A (en) * 1986-01-22 1989-06-27 Raney Richard C Drill bit stabilizer
US4844178A (en) * 1987-03-27 1989-07-04 Smf International Drilling device having a controlled path
US4848488A (en) * 1987-03-27 1989-07-18 Smf International Method and device for adjusting the path of a drilling tool fixed to the end of a set of rods
US4848490A (en) * 1986-07-03 1989-07-18 Anderson Charles A Downhole stabilizers
US4895214A (en) * 1988-11-18 1990-01-23 Schoeffler William N Directional drilling tool
US4901804A (en) * 1988-08-15 1990-02-20 Eastman Christensen Company Articulated downhole surveying instrument assembly
US4905774A (en) * 1986-05-27 1990-03-06 Institut Francais Du Petrole Process and device for guiding a drilling tool through geological formations
US4908804A (en) * 1983-03-21 1990-03-13 Develco, Inc. Combinatorial coded telemetry in MWD
US4995465A (en) * 1989-11-27 1991-02-26 Conoco Inc. Rotary drillstring guidance by feedrate oscillation
US5000272A (en) * 1988-01-19 1991-03-19 Martin Wiebe Self-controlling drill rod
US5099934A (en) * 1989-11-25 1992-03-31 Barr John D Rotary drill bits
US5103919A (en) * 1990-10-04 1992-04-14 Amoco Corporation Method of determining the rotational orientation of a downhole tool
US5109935A (en) * 1989-11-25 1992-05-05 Reed Tool Company Limited Rotary drill bits
US5113953A (en) * 1988-11-03 1992-05-19 Noble James B Directional drilling apparatus and method
US5117927A (en) * 1991-02-01 1992-06-02 Anadrill Downhole adjustable bent assemblies
US5181576A (en) * 1991-02-01 1993-01-26 Anadrill, Inc. Downhole adjustable stabilizer
US5186264A (en) * 1989-06-26 1993-02-16 Institut Francais Du Petrole Device for guiding a drilling tool into a well and for exerting thereon a hydraulic force
US5213168A (en) * 1991-11-01 1993-05-25 Amoco Corporation Apparatus for drilling a curved subterranean borehole
US5220963A (en) * 1989-12-22 1993-06-22 Patton Consulting, Inc. System for controlled drilling of boreholes along planned profile
US5305838A (en) * 1990-12-28 1994-04-26 Andre Pauc Device comprising two articulated elements in a plane, applied to a drilling equipment
US5305830A (en) * 1991-08-02 1994-04-26 Institut Francais Du Petrole Method and device for carrying out measurings and/or servicings in a wellbore or a well in the process of being drilled
US5311952A (en) * 1992-05-22 1994-05-17 Schlumberger Technology Corporation Apparatus and method for directional drilling with downhole motor on coiled tubing
US5311953A (en) * 1992-08-07 1994-05-17 Baroid Technology, Inc. Drill bit steering
US5316093A (en) * 1988-12-30 1994-05-31 Institut Francais Du Petrole Fitting for controlled trajectory drilling, comprising a variable geometry stabilizer and use of this fitting
US5390748A (en) * 1993-11-10 1995-02-21 Goldman; William A. Method and apparatus for drilling optimum subterranean well boreholes
US5410303A (en) * 1991-05-15 1995-04-25 Baroid Technology, Inc. System for drilling deivated boreholes
US5421420A (en) * 1994-06-07 1995-06-06 Schlumberger Technology Corporation Downhole weight-on-bit control for directional drilling
US5484029A (en) * 1994-08-05 1996-01-16 Schlumberger Technology Corporation Steerable drilling tool and system
US5507353A (en) * 1993-12-08 1996-04-16 Institut Francais Du Petrole Method and system for controlling the rotary speed stability of a drill bit
US5520255A (en) * 1994-06-04 1996-05-28 Camco Drilling Group Limited Modulated bias unit for rotary drilling
US5520256A (en) * 1994-11-01 1996-05-28 Schlumberger Technology Corporation Articulated directional drilling motor assembly
US5594343A (en) * 1994-12-02 1997-01-14 Schlumberger Technology Corporation Well logging apparatus and method with borehole compensation including multiple transmitting antennas asymmetrically disposed about a pair of receiving antennas
US5617926A (en) * 1994-08-05 1997-04-08 Schlumberger Technology Corporation Steerable drilling tool and system
US5706905A (en) * 1995-02-25 1998-01-13 Camco Drilling Group Limited, Of Hycalog Steerable rotary drilling systems
US5738178A (en) * 1995-11-17 1998-04-14 Baker Hughes Incorporated Method and apparatus for navigational drilling with a downhole motor employing independent drill string and bottomhole assembly rotary orientation and rotation
US5875859A (en) * 1995-03-28 1999-03-02 Japan National Oil Corporation Device for controlling the drilling direction of drill bit
US6047784A (en) * 1996-02-07 2000-04-11 Schlumberger Technology Corporation Apparatus and method for directional drilling using coiled tubing
US6216802B1 (en) * 1999-10-18 2001-04-17 Donald M. Sawyer Gravity oriented directional drilling apparatus and method
US6513606B1 (en) * 1998-11-10 2003-02-04 Baker Hughes Incorporated Self-controlled directional drilling systems and methods

Family Cites Families (55)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3104726A (en) * 1963-09-24 Rotary blt stabilizing structure
US712887A (en) * 1900-05-09 1902-11-04 Josef Wyczynski Centering and guiding device for deep-boring apparatus with eccentric boring-tool.
US1971480A (en) * 1931-06-25 1934-08-28 J S Abercrombie Company Means and method of straightening well bores
US2687282A (en) * 1952-01-21 1954-08-24 Eastman Oil Well Survey Co Reaming bit structure for earth bores
US2694549A (en) * 1952-01-21 1954-11-16 Eastman Oil Well Survey Co Joint structure between flexible shafting and drill bit structure for drilling lateral bores
US2857141A (en) * 1957-04-25 1958-10-21 Frank H Carpenter Well tool
US3068946A (en) * 1958-12-15 1962-12-18 Eastman Oil Well Survey Co Knuckle joint
US3062303A (en) * 1960-03-21 1962-11-06 Shell Oil Co Method and apparatus for controlling hole direction and inclination
US3051255A (en) * 1960-05-18 1962-08-28 Carroll L Deely Reamer
US3225843A (en) * 1961-09-14 1965-12-28 Exxon Production Research Co Bit loading apparatus
US3903974A (en) * 1974-03-12 1975-09-09 Roy H Cullen Drilling assembly, deviation sub therewith, and method of using same
US4040494A (en) * 1975-06-09 1977-08-09 Smith International, Inc. Drill director
US3997008A (en) * 1974-09-13 1976-12-14 Smith International, Inc. Drill director
US3974886A (en) * 1975-02-27 1976-08-17 Blake Jr Jack L Directional drilling tool
US4040495A (en) * 1975-12-22 1977-08-09 Smith International, Inc. Drilling apparatus
US4351037A (en) * 1977-12-05 1982-09-21 Scherbatskoy Serge Alexander Systems, apparatus and methods for measuring while drilling
US4291773A (en) * 1978-07-27 1981-09-29 Evans Robert F Strictive material deflectable collar for use in borehole angle control
US4220213A (en) * 1978-12-07 1980-09-02 Hamilton Jack E Method and apparatus for self orienting a drill string while drilling a well bore
US4357634A (en) * 1979-10-01 1982-11-02 Chung David H Encoding and decoding digital information utilizing time intervals between pulses
US4241796A (en) * 1979-11-15 1980-12-30 Terra Tek, Inc. Active drill stabilizer assembly
US4305474A (en) * 1980-02-04 1981-12-15 Conoco Inc. Thrust actuated drill guidance device
US4416339A (en) * 1982-01-21 1983-11-22 Baker Royce E Bit guidance device and method
DE3360898D1 (en) * 1982-02-02 1985-11-07 Shell Int Research Method and means for controlling the course of a bore hole
US4407377A (en) * 1982-04-16 1983-10-04 Russell Larry R Surface controlled blade stabilizer
US4787093A (en) * 1983-03-21 1988-11-22 Develco, Inc. Combinatorial coded telemetry
US4560013A (en) * 1984-02-16 1985-12-24 Baker Oil Tools, Inc. Apparatus for directional drilling and the like of subterranean wells
US4683956A (en) * 1984-10-15 1987-08-04 Russell Larry R Method and apparatus for operating multiple tools in a well
FR2581698B1 (en) 1985-05-07 1987-07-24 Inst Francais Du Petrole Assembly for performing oriented boreholes
US4690229A (en) * 1986-01-22 1987-09-01 Raney Richard C Radially stabilized drill bit
US4763258A (en) * 1986-02-26 1988-08-09 Eastman Christensen Company Method and apparatus for trelemetry while drilling by changing drill string rotation angle or speed
US4699224A (en) * 1986-05-12 1987-10-13 Sidewinder Joint Venture Method and apparatus for lateral drilling in oil and gas wells
US4714118A (en) * 1986-05-22 1987-12-22 Flowmole Corporation Technique for steering and monitoring the orientation of a powered underground boring device
US4697651A (en) * 1986-12-22 1987-10-06 Mobil Oil Corporation Method of drilling deviated wellbores
DE3711909C1 (en) 1987-04-08 1988-09-29 Eastman Christensen Co Stabilizer for deep drilling tools
US4880067A (en) 1988-02-17 1989-11-14 Baroid Technology, Inc. Apparatus for drilling a curved borehole
US4867255A (en) 1988-05-20 1989-09-19 Flowmole Corporation Technique for steering a downhole hammer
US4886130A (en) 1988-07-26 1989-12-12 Evans Robert F Nutational technique for limiting well bore deviation
US4854397A (en) 1988-09-15 1989-08-08 Amoco Corporation System for directional drilling and related method of use
US5553678A (en) 1991-08-30 1996-09-10 Camco International Inc. Modulated bias units for steerable rotary drilling systems
US5265682A (en) 1991-06-25 1993-11-30 Camco Drilling Group Limited Steerable rotary drilling systems
US5467834A (en) * 1994-08-08 1995-11-21 Maverick Tool Company Method and apparatus for short radius drilling of curved boreholes
GB9503829D0 (en) 1995-02-25 1995-04-19 Camco Drilling Group Ltd "Improvememnts in or relating to steerable rotary drilling systems"
GB9503827D0 (en) 1995-02-25 1995-04-19 Camco Drilling Group Ltd "Improvements in or relating to steerable rotary drilling systems
GB9503828D0 (en) 1995-02-25 1995-04-19 Camco Drilling Group Ltd "Improvements in or relating to steerable rotary drilling systems"
US6607044B1 (en) * 1997-10-27 2003-08-19 Halliburton Energy Services, Inc. Three dimensional steerable system and method for steering bit to drill borehole
US6092610A (en) * 1998-02-05 2000-07-25 Schlumberger Technology Corporation Actively controlled rotary steerable system and method for drilling wells
US6158529A (en) * 1998-12-11 2000-12-12 Schlumberger Technology Corporation Rotary steerable well drilling system utilizing sliding sleeve
US6109372A (en) * 1999-03-15 2000-08-29 Schlumberger Technology Corporation Rotary steerable well drilling system utilizing hydraulic servo-loop
CA2474228C (en) 1999-07-12 2008-03-11 Halliburton Energy Services, Inc. Directional drilling method for a steerable rotary drilling device
US6364034B1 (en) 2000-02-08 2002-04-02 William N Schoeffler Directional drilling apparatus
US20010052428A1 (en) 2000-06-15 2001-12-20 Larronde Michael L. Steerable drilling tool
US6394193B1 (en) 2000-07-19 2002-05-28 Shlumberger Technology Corporation Downhole adjustable bent housing for directional drilling
WO2002010547A1 (en) 2000-07-28 2002-02-07 Webb Charles T Directional drilling apparatus with shifting cam
US6837315B2 (en) * 2001-05-09 2005-01-04 Schlumberger Technology Corporation Rotary steerable drilling tool
US7188685B2 (en) * 2001-12-19 2007-03-13 Schlumberge Technology Corporation Hybrid rotary steerable system

Patent Citations (100)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3123162A (en) * 1964-03-03 Xsill string stabilizer
US2319236A (en) * 1940-08-22 1943-05-18 Sperry Sun Well Surveying Co Deflecting tool
US2345766A (en) * 1940-12-02 1944-04-04 Eastman Oil Well Survey Co Deflecting tool
US2585207A (en) * 1950-10-11 1952-02-12 John A Zublin Apparatus for drilling lateral bores deviating from vertical well bores
US2712434A (en) * 1953-11-23 1955-07-05 Melvin L Giles Directional drilling tool
US2876992A (en) * 1954-11-04 1959-03-10 Eastman Oil Well Survey Co Deflecting tools
US3129776A (en) * 1960-03-16 1964-04-21 William L Mann Full bore deflection drilling apparatus
US3098534A (en) * 1960-06-14 1963-07-23 Carr Warren Farrell Directional drill with hydraulically extended shoe
US3092188A (en) * 1961-07-31 1963-06-04 Whipstock Inc Directional drilling tool
US3305771A (en) * 1963-08-30 1967-02-21 Arps Corp Inductive resistivity guard logging apparatus including toroidal coils mounted on a conductive stem
US3309656A (en) * 1964-06-10 1967-03-14 Mobil Oil Corp Logging-while-drilling system
US4152545A (en) * 1965-04-05 1979-05-01 Martin Marietta Corporation Pulse position modulation secret communication system
US3370657A (en) * 1965-10-24 1968-02-27 Trudril Inc Stabilizer and deflecting tool
US3457999A (en) * 1967-08-31 1969-07-29 Intern Systems & Controls Corp Fluid actuated directional drilling sub
US3512592A (en) * 1968-03-14 1970-05-19 Exxon Production Research Co Offshore drilling method and apparatus
US3561549A (en) * 1968-06-07 1971-02-09 Smith Ind International Inc Slant drilling tools for oil wells
US3575247A (en) * 1969-03-06 1971-04-20 Shell Oil Co Diamond bit unit
US3667556A (en) * 1970-01-05 1972-06-06 John Keller Henderson Directional drilling apparatus
US3637032A (en) * 1970-01-22 1972-01-25 John D Jeter Directional drilling apparatus
US3743034A (en) * 1971-05-03 1973-07-03 Shell Oil Co Steerable drill string
US3799279A (en) * 1972-09-25 1974-03-26 R Farris Optionally stabilized drilling tool
US4076084A (en) * 1973-07-16 1978-02-28 Amoco Production Company Oriented drilling tool
US3888319A (en) * 1973-11-26 1975-06-10 Continental Oil Co Control system for a drilling apparatus
US3878903A (en) * 1973-12-04 1975-04-22 Martin Dee Cherrington Apparatus and process for drilling underground arcuate paths
US4027301A (en) * 1975-04-21 1977-05-31 Sun Oil Company Of Pennsylvania System for serially transmitting parallel digital data
US4022287A (en) * 1976-04-20 1977-05-10 Sandvik Aktiebolag Percussion drill bit
US4080115A (en) * 1976-09-27 1978-03-21 A-Z International Tool Company Progressive cavity drive train
US4190123A (en) * 1977-07-20 1980-02-26 John Roddy Rock drill bit loading device
US4185704A (en) * 1978-05-03 1980-01-29 Maurer Engineering Inc. Directional drilling apparatus
US4211292A (en) * 1978-07-27 1980-07-08 Evans Robert F Borehole angle control by gage corner removal effects
US4184553A (en) * 1978-10-25 1980-01-22 Conoco, Inc. Method for controlling direction of horizontal borehole
US4428441A (en) * 1979-04-04 1984-01-31 Mobil Oil Corporation Method and apparatus for reducing the differential pressure sticking tendency of a drill string
US4270619A (en) * 1979-10-03 1981-06-02 Base Jimmy D Downhole stabilizing tool with actuator assembly and method for using same
US4394881A (en) * 1980-06-12 1983-07-26 Shirley Kirk R Drill steering apparatus
US4456080A (en) * 1980-09-19 1984-06-26 Holbert Don R Stabilizer method and apparatus for earth-boring operations
US4388974A (en) * 1981-04-13 1983-06-21 Conoco Inc. Variable diameter drill rod stabilizer
US4515225A (en) * 1982-01-29 1985-05-07 Smith International, Inc. Mud energized electrical generating method and means
US4461359A (en) * 1982-04-23 1984-07-24 Conoco Inc. Rotary drill indexing system
US4449595A (en) * 1982-05-17 1984-05-22 Holbert Don R Method and apparatus for drilling a curved bore
US4491187A (en) * 1982-06-01 1985-01-01 Russell Larry R Surface controlled auxiliary blade stabilizer
US4492276B1 (en) * 1982-11-17 1991-07-30 Shell Oil Co
US4492276A (en) * 1982-11-17 1985-01-08 Shell Oil Company Down-hole drilling motor and method for directional drilling of boreholes
US4572305A (en) * 1983-01-27 1986-02-25 George Swietlik Drilling apparatus
US4908804A (en) * 1983-03-21 1990-03-13 Develco, Inc. Combinatorial coded telemetry in MWD
US4523652A (en) * 1983-07-01 1985-06-18 Atlantic Richfield Company Drainhole drilling assembly and method
US4638873A (en) * 1984-05-23 1987-01-27 Welborn Austin E Direction and angle maintenance tool and method for adjusting and maintaining the angle of deviation of a directionally drilled borehole
US4732223A (en) * 1984-06-12 1988-03-22 Universal Downhole Controls, Ltd. Controllable downhole directional drilling tool
US4577701A (en) * 1984-08-08 1986-03-25 Mobil Oil Corporation System of drilling deviated wellbores
US4821817A (en) * 1985-01-07 1989-04-18 Smf International Actuator for an appliance associated with a ducted body, especially a drill rod
US4637479A (en) * 1985-05-31 1987-01-20 Schlumberger Technology Corporation Methods and apparatus for controlled directional drilling of boreholes
US4655289A (en) * 1985-10-04 1987-04-07 Petro-Design, Inc. Remote control selector valve
US4667751A (en) * 1985-10-11 1987-05-26 Smith International, Inc. System and method for controlled directional drilling
US4662458A (en) * 1985-10-23 1987-05-05 Nl Industries, Inc. Method and apparatus for bottom hole measurement
US4635736A (en) * 1985-11-22 1987-01-13 Shirley Kirk R Drill steering apparatus
US4807708A (en) * 1985-12-02 1989-02-28 Drilex Uk Limited And Eastman Christensen Company Directional drilling of a drill string
US4842083A (en) * 1986-01-22 1989-06-27 Raney Richard C Drill bit stabilizer
US4739843A (en) * 1986-05-12 1988-04-26 Sidewinder Tool Joint Venture Apparatus for lateral drilling in oil and gas wells
US4836301A (en) * 1986-05-16 1989-06-06 Shell Oil Company Method and apparatus for directional drilling
US4821815A (en) * 1986-05-22 1989-04-18 Flowmole Corporation Technique for providing an underground tunnel utilizing a powered boring device
US4905774A (en) * 1986-05-27 1990-03-06 Institut Francais Du Petrole Process and device for guiding a drilling tool through geological formations
US4848490A (en) * 1986-07-03 1989-07-18 Anderson Charles A Downhole stabilizers
US4811798A (en) * 1986-10-30 1989-03-14 Team Construction And Fabrication, Inc. Drilling motor deviation tool
US4848488A (en) * 1987-03-27 1989-07-18 Smf International Method and device for adjusting the path of a drilling tool fixed to the end of a set of rods
US4844178A (en) * 1987-03-27 1989-07-04 Smf International Drilling device having a controlled path
US5000272A (en) * 1988-01-19 1991-03-19 Martin Wiebe Self-controlling drill rod
US4901804A (en) * 1988-08-15 1990-02-20 Eastman Christensen Company Articulated downhole surveying instrument assembly
US5113953A (en) * 1988-11-03 1992-05-19 Noble James B Directional drilling apparatus and method
US4895214A (en) * 1988-11-18 1990-01-23 Schoeffler William N Directional drilling tool
US5316093A (en) * 1988-12-30 1994-05-31 Institut Francais Du Petrole Fitting for controlled trajectory drilling, comprising a variable geometry stabilizer and use of this fitting
US5186264A (en) * 1989-06-26 1993-02-16 Institut Francais Du Petrole Device for guiding a drilling tool into a well and for exerting thereon a hydraulic force
US5099934A (en) * 1989-11-25 1992-03-31 Barr John D Rotary drill bits
US5109935A (en) * 1989-11-25 1992-05-05 Reed Tool Company Limited Rotary drill bits
US4995465A (en) * 1989-11-27 1991-02-26 Conoco Inc. Rotary drillstring guidance by feedrate oscillation
US5220963A (en) * 1989-12-22 1993-06-22 Patton Consulting, Inc. System for controlled drilling of boreholes along planned profile
US5103919A (en) * 1990-10-04 1992-04-14 Amoco Corporation Method of determining the rotational orientation of a downhole tool
US5305838A (en) * 1990-12-28 1994-04-26 Andre Pauc Device comprising two articulated elements in a plane, applied to a drilling equipment
US5117927A (en) * 1991-02-01 1992-06-02 Anadrill Downhole adjustable bent assemblies
US5181576A (en) * 1991-02-01 1993-01-26 Anadrill, Inc. Downhole adjustable stabilizer
US5602541A (en) * 1991-05-15 1997-02-11 Baroid Technology, Inc. System for drilling deviated boreholes
US5410303A (en) * 1991-05-15 1995-04-25 Baroid Technology, Inc. System for drilling deivated boreholes
US5305830A (en) * 1991-08-02 1994-04-26 Institut Francais Du Petrole Method and device for carrying out measurings and/or servicings in a wellbore or a well in the process of being drilled
US5213168A (en) * 1991-11-01 1993-05-25 Amoco Corporation Apparatus for drilling a curved subterranean borehole
US5311952A (en) * 1992-05-22 1994-05-17 Schlumberger Technology Corporation Apparatus and method for directional drilling with downhole motor on coiled tubing
US5311953A (en) * 1992-08-07 1994-05-17 Baroid Technology, Inc. Drill bit steering
US5390748A (en) * 1993-11-10 1995-02-21 Goldman; William A. Method and apparatus for drilling optimum subterranean well boreholes
US5507353A (en) * 1993-12-08 1996-04-16 Institut Francais Du Petrole Method and system for controlling the rotary speed stability of a drill bit
US5603385A (en) * 1994-06-04 1997-02-18 Camco Drilling Group Limited Rotatable pressure seal
US5520255A (en) * 1994-06-04 1996-05-28 Camco Drilling Group Limited Modulated bias unit for rotary drilling
US5421420A (en) * 1994-06-07 1995-06-06 Schlumberger Technology Corporation Downhole weight-on-bit control for directional drilling
US5617926A (en) * 1994-08-05 1997-04-08 Schlumberger Technology Corporation Steerable drilling tool and system
US5484029A (en) * 1994-08-05 1996-01-16 Schlumberger Technology Corporation Steerable drilling tool and system
US5529133A (en) * 1994-08-05 1996-06-25 Schlumberger Technology Corporation Steerable drilling tool and system
US5520256A (en) * 1994-11-01 1996-05-28 Schlumberger Technology Corporation Articulated directional drilling motor assembly
US5594343A (en) * 1994-12-02 1997-01-14 Schlumberger Technology Corporation Well logging apparatus and method with borehole compensation including multiple transmitting antennas asymmetrically disposed about a pair of receiving antennas
US5706905A (en) * 1995-02-25 1998-01-13 Camco Drilling Group Limited, Of Hycalog Steerable rotary drilling systems
US5875859A (en) * 1995-03-28 1999-03-02 Japan National Oil Corporation Device for controlling the drilling direction of drill bit
US5738178A (en) * 1995-11-17 1998-04-14 Baker Hughes Incorporated Method and apparatus for navigational drilling with a downhole motor employing independent drill string and bottomhole assembly rotary orientation and rotation
US6047784A (en) * 1996-02-07 2000-04-11 Schlumberger Technology Corporation Apparatus and method for directional drilling using coiled tubing
US6513606B1 (en) * 1998-11-10 2003-02-04 Baker Hughes Incorporated Self-controlled directional drilling systems and methods
US6216802B1 (en) * 1999-10-18 2001-04-17 Donald M. Sawyer Gravity oriented directional drilling apparatus and method

Cited By (62)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20030121702A1 (en) * 2001-12-19 2003-07-03 Geoff Downton Hybrid Rotary Steerable System
US7188685B2 (en) * 2001-12-19 2007-03-13 Schlumberge Technology Corporation Hybrid rotary steerable system
US7234543B2 (en) 2003-04-25 2007-06-26 Intersyn Ip Holdings, Llc Systems and methods for directionally drilling a borehole using a continuously variable transmission
US20040262043A1 (en) * 2003-04-25 2004-12-30 Stuart Schuaf Systems and methods for the drilling and completion of boreholes using a continuously variable transmission to control one or more system components
US20050000733A1 (en) * 2003-04-25 2005-01-06 Stuart Schaaf Systems and methods for performing mud pulse telemetry using a continuously variable transmission
US7481281B2 (en) 2003-04-25 2009-01-27 Intersyn Ip Holdings, Llc Systems and methods for the drilling and completion of boreholes using a continuously variable transmission to control one or more system components
US20040262044A1 (en) * 2003-04-25 2004-12-30 Stuart Schaaf Systems and methods for directionally drilling a borehole using a continuously variable transmission
US8893824B2 (en) * 2003-11-26 2014-11-25 Schlumberger Technology Corporation Steerable drilling system
US20110266063A1 (en) * 2003-11-26 2011-11-03 Geoff Downton Steerable drilling system
US20110031019A1 (en) * 2004-10-28 2011-02-10 Williams Danny T Formation Dip Geo-Steering Method
US8960326B2 (en) 2004-10-28 2015-02-24 Danny T. Williams Formation dip geo-steering method
US7546209B2 (en) * 2004-10-28 2009-06-09 Williams Danny T Formation dip geo-steering method
US8875806B2 (en) 2004-10-28 2014-11-04 Danny T. Williams Formation dip geo-steering method
US20090260881A1 (en) * 2004-10-28 2009-10-22 Williams Danny T Formation Dip Geo-Steering Method
US9534446B2 (en) 2004-10-28 2017-01-03 Danny T. Williams Formation dip geo-steering method
US20070205020A1 (en) * 2004-10-28 2007-09-06 Williams Danny T Formation dip geo-steering method
US8827006B2 (en) * 2005-05-12 2014-09-09 Schlumberger Technology Corporation Apparatus and method for measuring while drilling
US20060254819A1 (en) * 2005-05-12 2006-11-16 Moriarty Keith A Apparatus and method for measuring while drilling
US8590636B2 (en) * 2006-04-28 2013-11-26 Schlumberger Technology Corporation Rotary steerable drilling system
US20070251726A1 (en) * 2006-04-28 2007-11-01 Schlumberger Technology Corporation Rotary Steerable Drilling System
GB2450846B (en) * 2006-05-11 2012-05-09 Schlumberger Holdings Steering systems for coiled tubing drilling
US8408333B2 (en) * 2006-05-11 2013-04-02 Schlumberger Technology Corporation Steer systems for coiled tubing drilling and method of use
US20070261887A1 (en) * 2006-05-11 2007-11-15 Satish Pai Steering Systems for Coiled Tubing Drilling
US8302705B2 (en) * 2006-12-21 2012-11-06 Schlumberger Technology Corporation Steering system
US20080149394A1 (en) * 2006-12-21 2008-06-26 Schlumberger Technology Corporation Steering system
US8763725B2 (en) * 2007-06-26 2014-07-01 Schlumberger Technology Corporation Rotary steerable drilling system
US20120145458A1 (en) * 2007-06-26 2012-06-14 Fleming And Company, Pharmaceutical Rotary steerable drilling system
US20090151939A1 (en) * 2007-12-13 2009-06-18 Schlumberger Technology Corporation Surface tagging system with wired tubulars
US20100193184A1 (en) * 2007-12-13 2010-08-05 Lee Dolman System and method of monitoring flow in a wellbore
US8172007B2 (en) 2007-12-13 2012-05-08 Intelliserv, LLC. System and method of monitoring flow in a wellbore
US8800687B2 (en) 2007-12-19 2014-08-12 Schlumberger Technology Corporation Steerable system
US20110100716A1 (en) * 2007-12-19 2011-05-05 Michael Shepherd Steerable system
US8464811B2 (en) * 2007-12-19 2013-06-18 Schlumberger Technology Corporation Steerable system
US8517121B2 (en) * 2007-12-21 2013-08-27 Schlumberger Technology Corporation Steerable drilling system
US20110042144A1 (en) * 2007-12-21 2011-02-24 Downton Geoffrey C Steerable drilling system
US20110139512A1 (en) * 2009-12-11 2011-06-16 Kjell Haugvaldstad Actuators, actuatable joints, and methods of directional drilling
US8235146B2 (en) * 2009-12-11 2012-08-07 Schlumberger Technology Corporation Actuators, actuatable joints, and methods of directional drilling
GB2503527A (en) * 2010-06-18 2014-01-01 Schlumberger Holdings Rotary steerable tool actuator tool face control
WO2011160027A2 (en) * 2010-06-18 2011-12-22 7Schlumberger Canada Limited Oil operated rotary steerable system
US9394745B2 (en) 2010-06-18 2016-07-19 Schlumberger Technology Corporation Rotary steerable tool actuator tool face control
WO2011158111A3 (en) * 2010-06-18 2012-02-16 Prad Research And Development Limited Rotary steerable tool actuator tool face control
WO2011158111A2 (en) * 2010-06-18 2011-12-22 Schlumberger Canada Limited Rotary steerable tool actuator tool face control
WO2011160027A3 (en) * 2010-06-18 2012-02-23 7Schlumberger Canada Limited Oil operated rotary steerable system
US9309722B2 (en) 2010-06-18 2016-04-12 Schlumberger Technology Corporation Oil operated rotary steerable system
GB2503527B (en) * 2010-06-18 2017-12-13 Schlumberger Holdings Rotary steerable tool actuator tool face control
CN103124828A (en) * 2010-06-18 2013-05-29 普拉德研究及开发股份有限公司 Rotary steerable tool actuator tool face control
US9435157B2 (en) * 2010-11-29 2016-09-06 Schlumberger Technology Corporation Bottom hole assembly including bi-stable valves
US8602104B2 (en) * 2010-11-29 2013-12-10 Schlumberger Technology Corporation Bi-stable valve
US20140076637A1 (en) * 2010-11-29 2014-03-20 Schlumberger Technology Corporation Bi-Stable Valve
US9556679B2 (en) 2011-08-19 2017-01-31 Precision Energy Services, Inc. Rotary steerable assembly inhibiting counterclockwise whirl during directional drilling
US9187956B2 (en) 2011-09-27 2015-11-17 Richard Hutton Point the bit rotary steerable system
US9057223B2 (en) 2012-06-21 2015-06-16 Schlumberger Technology Corporation Directional drilling system
WO2014047599A1 (en) * 2012-09-24 2014-03-27 Schlumberger Canada Limited Positive displacement motor (pdm) rotary steerable system (rss) and apparatus
US9206644B2 (en) 2012-09-24 2015-12-08 Schlumberger Technology Corporation Positive displacement motor (PDM) rotary steerable system (RSS) and apparatus
US9982486B2 (en) * 2013-06-14 2018-05-29 Lkab Wassara Ab Arrangement and down-the-hole drilling equipment for angular setting of a drill string
US9828804B2 (en) 2013-10-25 2017-11-28 Schlumberger Technology Corporation Multi-angle rotary steerable drilling
CN105637164A (en) * 2013-10-25 2016-06-01 普拉德研究及开发股份有限公司 Multi-angle rotary steerable drilling
WO2016154373A1 (en) * 2015-03-24 2016-09-29 Baker Hughes Incorporated Self-adjusting directional drilling apparatus and methods for drilling directional wells
US9657561B1 (en) 2016-01-06 2017-05-23 Isodrill, Inc. Downhole power conversion and management using a dynamically variable displacement pump
US9464482B1 (en) 2016-01-06 2016-10-11 Isodrill, Llc Rotary steerable drilling tool
US9624727B1 (en) 2016-02-18 2017-04-18 D-Tech (Uk) Ltd. Rotary bit pushing system
WO2018057698A1 (en) * 2016-09-23 2018-03-29 Baker Hughes, A Ge Company, Llc Drilling apparatus using a self-adjusting deflection device and directional sensors for drilling directional wells

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US7188685B2 (en) 2007-03-13 grant
US20030121702A1 (en) 2003-07-03 application

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