AU2002245623A1 - Steerable underreaming bottom hole assembly and method - Google Patents

Steerable underreaming bottom hole assembly and method

Info

Publication number
AU2002245623A1
AU2002245623A1 AU2002245623A AU2002245623A AU2002245623A1 AU 2002245623 A1 AU2002245623 A1 AU 2002245623A1 AU 2002245623 A AU2002245623 A AU 2002245623A AU 2002245623 A AU2002245623 A AU 2002245623A AU 2002245623 A1 AU2002245623 A1 AU 2002245623A1
Authority
AU
Australia
Prior art keywords
bit
bottom hole
hole assembly
diameter
bend
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
AU2002245623A
Other versions
AU2002245623B2 (en
Inventor
Chen-Kang Chen
William H. Smith Jr
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Halliburton Energy Services Inc
Original Assignee
Halliburton Energy Services Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from US09/956,174 external-priority patent/US6470977B1/en
Application filed by Halliburton Energy Services Inc filed Critical Halliburton Energy Services Inc
Publication of AU2002245623A1 publication Critical patent/AU2002245623A1/en
Application granted granted Critical
Publication of AU2002245623B2 publication Critical patent/AU2002245623B2/en
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Description

STEERABLE UNDERREAMING BOTTOM HOLE ASSEMBLY AND METHOD
Field of the Invention
The present invention relates to steerable bottom hole assemblies when
used for underrearning or enlarging a section of a wellbore.
Background of the Invention
Steerable bottom hole assemblies include a positive displacement motor
(PDM) or "mud motor" which has a bend angle that allows a drilling operator to build
at a desired rate when "sliding" the non-rotating motor housing. The bend angle of
the bent sub or bent motor housing, in combination with the contact points of the
bottom hole assembly (BHA) with the well bore wall, thus largely determines the
build rate for drilling the curved borehole section. When the drill string and the
motor housing are rotated, the drilling operator drills a straight or tangent section of the borehole. The rate of penetration (ROP) of the bit drilling through the formation
is frequently significantly less when "sliding" to build rather than rotating the bottom
hole assembly from the surface to drill the straight borehole sections. Since ROP
translates to time and money, drilling operators prefer to maximize the time when
the BHA is rotated for drilling straight, and minimize the time of building. For various
reasons, high build rates are generally preferred, but the bend angle is preferably
low to minimize problems when the BHA is rotated. A steerable bottom hole
assembly is disclosed in U.S. Patent 6,269,892. This patent discloses the benefits of a steerable bottom hole assembly with a long gauge bit, i.e., a bit having a gauge
section with an axial length of at least 75% of the bit diameter.
Underreaming tools within the bottom hole assembly are used to enlarge a
section of the well bore below a restriction. Advantages of underreaming are
disclosed in an article "Simultaneous Drilling and Reaming Saves Rig Time", 0/7 &
Gas Journal, November 27, 1989. Conventional underreaming tools use three or
more cutting arms that are moved outward in response to fluid pressure within the
tool. A reamer designed for hole opening while drilling is the NBR reamer offered
by Security DBS, a Halliburton Company.
When reamers are used in a conventional steerable bottom hole assembly
immediately above the bit and below the motor housing, the bottom hole assembly
has very poor steerability. More particularly, it is difficult to accurately predict the
build rate when sliding, regardless of the positioning of stabilizers above the reamer.
Because of high vibration, the azimuth of the curved borehole formed while sliding
may be inaccurate. Moreover, borehole quality is geherally poor due to high
vibration, which prohibits the motor housing from "holding steady" in the well.
Because of the disadvantages of a steerable bottom hole assembly and
reamer combination discussed above, operators have used bi-center bits rather
than reamers for performing the underreaming operation. Bi-center bits are
discussed in "Application of Bi-Center Bits in Well-Deepening Operations,
IADC/SPE 19921 , page 131. While bi-center bits may be a better solution than a
reamer in some applications, significant problems remain when using a bi-center bit. Vibration due to the bi-center bit is significant, and the bottom hole assembly is also
difficult to steer. Vibrations are particularly high when drilling relatively hard
formations. High vibration not only increases the likelihood of failure in the bottom
hole assembly, but is generally indicative of poor borehole quality. High vibration
typically results in excessive bit wear. Drilling operators are constantly seeking
techniques which will result in better hole quality when drilling with a steerable
downhole motor. The bottom hole assembly also should have good steerability and
preferably be able to drill at a relatively high ROP.
The disadvantages of the prior art are overcome by the present invention,
and an improved steerable bottom hole assembly and method are hereafter
disclosed for underreaming a section of borehole with relatively low vibration and
high borehole quality.
Summary of the Invention
A steerable bottom hole assembly according to the present invention is used
for drilling both a curved section and a straight section of the borehole. The bottom
hole assembly includes a downhole positive displacement motor having a motor
housing and a bend angle. The motor housing encloses a shaft or rotor offset at a
selected bend angle from a central axis of an upper housing, which encloses the
power section of the motor. The motor is powered by fluid to rotate the bit when
sliding to drill the curved section of the borehole, and the bottom hole assembly including the motor is rotated from the surface to drill the straight section of the
borehole.
A gauge section is provided directly above the bit and has a substantially
uniform diameter cylindrical surface with an axial length of at least 75 % of the bit
diameter. A reamer is positioned directly above the bit and has a reamer diameter
significantly greater than the bit diameter for drilling an enlarged section of the
borehole compared to the restricted diameter through which the bottom hole
assembly has passed.
It is an object of the present invention to provide a steerable bottom hole
assembly which is useful for underreaming operations and results in relatively high
borehole quality compared to prior art techniques.
It is a feature of the present invention that the bend-to-bit distance is less than 15 times the bit diameter, preferably less than the 12 times the bit diameter,
thereby obtaining a relatively high build rate for a low angle bend in the motor. To
provide this low bend-to-bit distance, the lower end of the motor includes a pin
connection at the end of the shaft or motor for mating engagement with a box
connection at the upper end of the reamer.
It is a feature of the present invention that the positive displacement motor
is preferably run slick, i.e., with no stabilizers for engaging the wall of the well bore. It is another feature of the present invention to provide a bottom hole
assembly with a second reamer repositioned above the bend in the downhole
motor. ln a preferred embodiment, the bend in the bottom hole assembly has a bend
angle of less than 3°, and the gauge section has an axial length of at least 90% of
the bit diameter.
A related feature of the present invention is to provide a method of forming
a subterranean borehole utilizing a steerable bottom hole assembly as discussed
above, including a reamer below the downhole motor for enlarging the borehole
diameter substantially beyond the bit diameter. A gauge section is provided
between the bit and the reamer to add stability to the BHA. The motor is powered
with fluid to rotate the bit while the motor housing is slid to drill a curved section of
the borehole, and the bottom hole assembly is rotated from the surface to build a
straight section of the borehole.
A significant advantage of the present invention is that the bottom hole
assembly does not require specially made components. Instead, each of the
components of the bottom hole assembly may be selected by the operator as
desired to achieve the objectives of the invention. '
These and further objects, features, and advantages of the present
invention will become apparent from the following detailed description, wherein
reference is made to the figures in the accompanying drawings. Brief Description of the Drawings
Figure 1 is a simplified view of the bottom hole assembly according to the present invention for performing underreaming operations.
Figure 2 is a cross-sectional view illustrating the mechanical
interconnection between the lower end of the motor rotor and the box connection on the reamer.
Detailed Description of Preferred Embodiments
Steerable drilling systems conventionally utilize a downhole motor (mud
motor) powered by drilling fluid (mud) pumped from the surface to rotate the bit.
The motor rotates the bit using a drive section, with the rotor output from the drive
section extending through a bent sub or bent housing to rotate the bit. The bent sub
may actually comprise more than one bend to obtain a net effect which is referred
to as the "bend angle" of the bottom hole assembly. The downhole motor which
utilizes a lobed rotor is referred to as a positive displacernent motor (PDM).
Figure 1 depicts a steerable bottom hole assembly (BHA) for drilling both a
curved section and a straight section of the borehole. The BHA includes a PDM 12
which is conventionally suspended in the well from a tubular string 14, which is
conventionally threaded drill pipe. PDM 12 includes a motor housing 16 with a
substantially cylindrical outer surface and a conventional lobed rotor 18 within the
power section of the motor for rotating the bit. The lower housing 22 includes a
bearing package assembly 24 which conventionally comprises both thrust and radial bearings. The upper housing 26 has a central axis 27 which is offset at a selected
angle from the central axis of the lower housing 28, thereby forming the bend 13.
A reamer 30 is positioned below the motor 12, and is discussed further below. The bottom hole assembly includes a rotary bit 30 having a bit end face 31
which defines a bit diameter. The bit includes a long gauge section 32 with a
cylindrical outer surface. The gauge section is fixed to and may be integral with the
bit. The axial length of the gauge section is at least 75 % of the bit diameter, and
preferably the axial length of the gauge section is at least 90 % of the bit diameter.
In many applications, the gauge section axial length may be from 1 to 1 V∑ times the
bit diameter. The diameter of the gauge section may be slightly undergauged, e.g.,
1/32 of an inch less than the bit diameter.
The gauge length is from the top of the gauge section to the bottom of the
gauge section, and at least 50 % of this gauge length has a substantially uniform
diameter cylindrical surface. One or more short gaps or undergauge portions may
thus be provided between the top of the gauge section and the bottom of the gauge
section. The spacing from the top to the bottom of the gauge section will be the
total gauge length, and thatthe portion which has the substantially uniform diameter
cylindrical surface is at least 50 % of the total gauge length.
It is a feature of the present invention to maintain a relatively short distance
between the bit face and the bend 13. According to the present invention, the bend-
to-bit face spacing may be less than 15 times the bit diameter, and preferably is less
than 12 times the bit diameter. In order to reduce the distance between the bend and the bit face, the PDM motor is preferably is provided with a pin connection 34,
as shown in Figure 2, at the lowermost end of the shaft 36, while the reamer 38 is
provided with a box connection 40 at its uppermost end. The combination of the pin
down motor and the box up reamer allows for shortening the bend to bit face
distance.
According to the BHA of the present invention, the first point of contact
between the BHA and the well bore is the bit face 31. The second point of contact
between the BHA and the well bore is along the gauge section 32. The third point
of contact between the BHA and the well bore is along the reamer 38. The motor
housing including the bend in the BHA as shown in Figure 1 does not contact the
well bore, so that the fourth point of contact between the BHA and the well bore is
spaced above the bend, and as shown in Figure 1 is the reamer 42. Drill string
stabilizers or other reamers may be provided above the reamer 42. The bottom
hole assembly may also include an MWD system 44 positioned above the motor 12
for transmitting signals to the surface of the well in realtinie. The reamer 38 is used
to enlarge the borehole to a diameter greater than the diameter of the bit, which
approximates or is greater than the diameter of the casing string above the bottom
hole assembly.
The PDM is preferably run "slick", i.e., with no stabilizers on the motor for
engagement with the wall of the borehole. The PDM motor may include a slide or
wear pad. The BHA as disclosed herein has surprisingly low vibration, which results
in good borehole quality. The benefits of improved borehole quality include reduced hole cleaning, improved logging operations and log quality, easier casing runs, and
more reliable cementing operations.
U.S. Patent 6,269,892 discloses a steerable mud motor which has low
vibration and results in high borehole quality when a long gauge section is provided
immediately above the bit, and when the next contact point between the bottom
hole assembly and the borehole is above the bend, and is typically spaced
considerably above the bend in the motor. The use of a reamer between the PDM
motor and the bit inherently adds to the bit-to-bend distance. By providing another
tool for contact with the formation below the bend, which is also a formation cutting
tool, the assumption would be that vibration would significantly increase, that the
build rate would significantly suffer, that the predictability of the build rate would be
reduced, and that borehole quality would deteriorate. This result has not occurred,
which is surprising.
Table 1 provides predicted build/drop rates for different gauge outer
diameters on the reamer 42 above the bend. The BHA Has a bent angle of 1.15°,
a bit inclination of 14°, and a weight on bit of 17,000 pounds. The reamer 38 below
the bend has a diameter of 14 inches, and the bit diameter has 12.25 inches. The
build/drop rates when sliding with the tool face on the high side, the low side, and
neutral are provided for different diameters of the stabilizer or upper reamer 42.
Most importantly, Table 1 indicates that the build rate when in the rotary mode is in
the acceptable range when the upper reamer is 1/4 inch or less uήdergauged from a lower reamer. According to the present invention, the diameter of the upper
reamer above the bend in the BHA should be less than about 1/2 inch from the
diameter of the lower reamer.
Table 1
Initial tests have indicated that the bottom hole assembly of the present
invention with a reamer above the gauge section and below the mud motor has very
good build rates and predictable steerability. Although the build rates are lower
than a BHA without a reamer, build rates were substantially better than prior art
bottom hole assemblies used for underreaming a section of a borehole, including
systems which use bi-centered bits with stabilizers on the motor housing. Most
importantly, vibration is significantly reduced so that borehole quality is much better
than that typically obtained when using a BHA with either a bi-centered bit, or a
conventional bit and a reamer. Due to better bit stability, the sliding ROP for the
bottom hole assembly is surprisingly high, and was even better than the rotating
ROP of conventional BHA's used for underreaming operations. The build rate when sliding was only about 20 to 30 % less than the build rate when sliding using a
steerable BHA without a reamer. Accordingly, the BHA may be operated in the oriented or steerable mode for relatively long periods of time to counteract the
slightly lower build rate. High vibration associated with downhole motors with a high
bend angle may thus be further reduced.
For the embodiment as shown in Figure 1 , a second reamer 42 is provided
substantially above the bend. The addition of this second reamer improves
directional tendency and stability while drilling, particularly in hard formations, such
as salt formations. When drilling in the rotary mode, this additional second reamer
acts a stabilizer to reduce vibration. The build rate may be reduced by adding this
additional reamer, since the elimination of this contact point with the borehole wall
increases the side force build tendency and reactive forces on the components
below the motor. Additional drill collar stabilizers and/or additional reamers may be
provided above the reamer 42.
While preferred embodiments of the present invention have been
illustrated in detail, it is apparent that modifications and adaptations of the
preferred embodiments will occur to those skilled in the art. However, it is to be
expressly understood that such modifications and adaptations are within the
spirit and scope of the present invention as set forth in the following claims.

Claims (20)

What is claimed is:
1. A steerable bottom hole assembly for drilling a borehole comprising: a downhole motor having a motor housing and a bend angle, a motor housing enclosing an output rotor offset at a selected bend angle from a central axis
of an upper housing, the motor rotor powering a bit when sliding to drill a curved
section of the borehole and the bottom hole assembly being rotated from the
surface to build a straight section of the borehole;
the bit having a bit face defining a bit diameter;
a gauge section having a substantially uniform diameter cylindrical surface
approximating the bit diameter, the gauge section having an axial length at least
75% of the bit diameter; and
a reamer positioned between the down hole motor and the gauge section,
the reamer including cutters for enlarging the borehole diameter substantially
beyond the bit diameter.
2. The steerable bottom hole assembly as defined in Claim 1 , wherein
the downhole motor is slick with no stabilizers for engaging the wall of the wellbore.
3. The steerable bottom hole assembly as defined in Claim 1 , further
comprising:
a second reamer positioned on the bottom hole assembly above the bend
in the downhole motor.
4. The steerable bottom hole assembly as defined in Claim 1 , further
comprising: the output rotor having a pin connection at its lowermost end; and
the reamer having a box connection at its upper end for mating
interconnection with the pin connection.
5. The bottom hole assembly as defined in Claim 1 , wherein an axial
spacing between the bend and the bit face is less than 15 times the bit diamter.
6. The bottom hole assembly as defined in Claim 1 , wherein an axial
spacing between the bend and the bit face is less than 12 times the bit diameter.
7. A bottom hole assembly as defined in Claim 1, wherein the gauge
section has an axial length of at least 90 % of the bit diafneter.
8. The bottom hole assembly as defined in Claim 1 , wherein the bend has a bend angle of less than 3°.
9. A steerable bottom hole assembly for drilling a borehole comprising:
a downhole motor having a motor housing and a bend angle, a motor
housing enclosing an output rotor offset at a selected bend angle from a central axis of an upper housing, the motor rotor powering a bit when sliding to drill a curved
section of the borehole and the bottom hole assembly being rotated from the
surface to build a straight section of the borehole;
the bit having a bit face defining a bit diameter;
an axial spacing between the bend and the bit face being less than 15 times
the bit diameter;
a gauge section having a substantially uniform diameter cylindrical surface
approximating the bit diameter, the gauge section having an axial length at least
75% of the bit diameter; and
a reamer positioned between the down hole motor and the gauge section,
the reamer including cutters for enlarging the borehole diameter substantially
beyond the bit diameter.
10. The steerable bottom hole assembly as defined in Claim 9, wherein
the downhole motor is slick with no stabilizers for engaging the wall of the wellbore.
11. The steerable bottom hole assembly as defined in Claim 9, further
comprising:
a second reamer positioned on the bottom hole assembly above the bend
in the downhole motor.
12. The steerable bottom hole assembly as defined in Claim 9, further
comprising:
the output rotor having a pin connection at its lowermost end; and
the reamer having box connection at its upper end formating interconnection
with the pin connection.
13. The bottom hole assembly as defined in Claim 9, wherein axial
spacing between the bend and the bit face is less than 12 times the bit diameter.
14. A method of forming a subterranean borehole utilizing a steerable
bottom hole assembly including a downhole motor having a motor housing and a
bend angle, the motor housing enclosing an output rotor offset at a selected bend
angle from a central axis of an upper housing, the method comprising:
providing a bit having a bit face defining a bit diameter;
providing a gauge section above the bit having1 a substantially uniform
diameter cylindrical surface approximating the bit diameter, the gauge section
having an axial length at least 75% of the bit diameter;
providing a reamer between the downhole motor and the gauge section, the
reamer including cutting cutters for enlarging the borehole diameter substantially
beyond the bit diameter;
powering the motor with fluid to rotate the bit while the motor housing is slid
to drill a curved section of the borehole; and rotating the bottom hole assembly from the surface to build a straight section
of the borehole.
15. The method as defined in Claim 14, further comprising:
providing a pin connection at a lowermost end of the output shaft from the
downhole motor; and
providing a box connection at the upper end of the reamer for interconnection
with the pin connection.
16. The method as defined in Claim 14, wherein axial spacing between
the bend and the bit face is less than 15 times the bit diameter.
17. The method as defined in Claim 14, wherein axial spacing between
the bend and the bit face is less than 12 times the bit diameter.
18. The method as defined in Claim 14, further comprising:
providing a second reamer above the bend in the downhole motor.
19. The method as defined in Claim 14, wherein the gauge section has
an axial length of at least 90% of the bit diameter.
20. The method as defined in Claim 14, wherein the bend has bend angle
of less than 3°.
AU2002245623A 2001-09-18 2002-03-08 Steerable underreaming bottom hole assembly and method Ceased AU2002245623B2 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US09/956,174 US6470977B1 (en) 2001-09-18 2001-09-18 Steerable underreaming bottom hole assembly and method
US09/956,174 2001-09-18
PCT/US2002/007002 WO2003025328A1 (en) 2001-09-18 2002-03-08 Steerable underreaming bottom hole assembly and method

Publications (2)

Publication Number Publication Date
AU2002245623A1 true AU2002245623A1 (en) 2003-06-05
AU2002245623B2 AU2002245623B2 (en) 2007-01-18

Family

ID=25497856

Family Applications (1)

Application Number Title Priority Date Filing Date
AU2002245623A Ceased AU2002245623B2 (en) 2001-09-18 2002-03-08 Steerable underreaming bottom hole assembly and method

Country Status (7)

Country Link
US (2) US6470977B1 (en)
AU (1) AU2002245623B2 (en)
BR (1) BR0212608A (en)
CA (1) CA2460524C (en)
GB (1) GB2396879B (en)
NO (1) NO20041113L (en)
WO (1) WO2003025328A1 (en)

Families Citing this family (66)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7334652B2 (en) * 1998-08-31 2008-02-26 Halliburton Energy Services, Inc. Roller cone drill bits with enhanced cutting elements and cutting structures
US6470977B1 (en) * 2001-09-18 2002-10-29 Halliburton Energy Services, Inc. Steerable underreaming bottom hole assembly and method
US7513318B2 (en) * 2002-02-19 2009-04-07 Smith International, Inc. Steerable underreamer/stabilizer assembly and method
US7334649B2 (en) 2002-12-16 2008-02-26 Halliburton Energy Services, Inc. Drilling with casing
US6877570B2 (en) * 2002-12-16 2005-04-12 Halliburton Energy Services, Inc. Drilling with casing
US7213643B2 (en) * 2003-04-23 2007-05-08 Halliburton Energy Services, Inc. Expanded liner system and method
US7096979B2 (en) * 2003-05-10 2006-08-29 Noble Drilling Services Inc. Continuous on-bottom directional drilling method and system
US7066271B2 (en) * 2003-11-24 2006-06-27 Halliburton Energy Services, Inc. Expanded downhole screen systems and method
US20050126826A1 (en) * 2003-12-12 2005-06-16 Moriarty Keith A. Directional casing and liner drilling with mud motor
US7207215B2 (en) * 2003-12-22 2007-04-24 Halliburton Energy Services, Inc. System, method and apparatus for petrophysical and geophysical measurements at the drilling bit
US7434632B2 (en) 2004-03-02 2008-10-14 Halliburton Energy Services, Inc. Roller cone drill bits with enhanced drilling stability and extended life of associated bearings and seals
GB2420433B (en) * 2004-03-02 2012-02-22 Halliburton Energy Serv Inc Computer-implemented method to design a roller cone drill bit
GB2417966A (en) * 2004-08-16 2006-03-15 Halliburton Energy Serv Inc Roller cone drill bits with optimized bearing structure
US7860696B2 (en) * 2005-08-08 2010-12-28 Halliburton Energy Services, Inc. Methods and systems to predict rotary drill bit walk and to design rotary drill bits and other downhole tools
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
EP1929117A1 (en) * 2005-08-08 2008-06-11 Halliburton Energy Services, Inc. Methods and systems for designing and/or selecting drilling equipment with desired drill bit steerability
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
US7861802B2 (en) * 2006-01-18 2011-01-04 Smith International, Inc. Flexible directional drilling apparatus and method
US7506703B2 (en) * 2006-01-18 2009-03-24 Smith International, Inc. Drilling and hole enlargement device
WO2007103245A2 (en) 2006-03-02 2007-09-13 Baker Hughes Incorporated Automated steerable hole enlargement drilling device and methods
US8875810B2 (en) 2006-03-02 2014-11-04 Baker Hughes Incorporated Hole enlargement drilling device and methods for using same
US7810568B2 (en) * 2006-10-19 2010-10-12 Baker Hughes Incorporated Method of making a window in a tubular using an expandable watermelon mill
US7950453B2 (en) * 2007-04-20 2011-05-31 Shell Oil Company Downhole burner systems and methods for heating subsurface formations
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
US8720604B2 (en) * 2007-08-15 2014-05-13 Schlumberger Technology Corporation Method and system for steering a directional drilling system
US8534380B2 (en) * 2007-08-15 2013-09-17 Schlumberger Technology Corporation System and method for directional drilling a borehole with a rotary drilling system
US8763726B2 (en) * 2007-08-15 2014-07-01 Schlumberger Technology Corporation Drill bit gauge pad control
US8066085B2 (en) 2007-08-15 2011-11-29 Schlumberger Technology Corporation Stochastic bit noise control
RU2496067C2 (en) 2007-10-19 2013-10-20 Шелл Интернэшнл Рисерч Маатсхаппий Б.В. Cryogenic treatment of gas
US8172335B2 (en) 2008-04-18 2012-05-08 Shell Oil Company Electrical current flow between tunnels for use in heating subsurface hydrocarbon containing formations
US8746368B2 (en) * 2008-08-13 2014-06-10 Schlumberger Technology Corporation Compliantly coupled gauge pad system
CA2739039C (en) 2008-10-13 2018-01-02 Shell Internationale Research Maatschappij B.V. Systems and methods for treating a subsurface formation with electrical conductors
US8286731B2 (en) * 2008-10-22 2012-10-16 Ressi Di Cervia Arturo L Method and apparatus for constructing deep vertical boreholes and underground cut-off walls
GB0904791D0 (en) * 2009-03-20 2009-05-06 Turbopower Drilling Sal Downhole drilling assembly
EP3333355B1 (en) 2010-01-28 2019-10-09 Halliburton Energy Services, Inc. Bearing assembly
CN103221626B (en) 2010-09-09 2015-07-15 国民油井华高有限公司 Downhole rotary drilling apparatus with formation-interfacing members and control system
US8869916B2 (en) 2010-09-09 2014-10-28 National Oilwell Varco, L.P. Rotary steerable push-the-bit drilling apparatus with self-cleaning fluid filter
US9580965B2 (en) 2011-02-08 2017-02-28 Halliburton Energy Services, Inc. Multiple motor/pump array
US8973679B2 (en) * 2011-02-23 2015-03-10 Smith International, Inc. Integrated reaming and measurement system and related methods of use
US8210283B1 (en) 2011-12-22 2012-07-03 Hunt Energy Enterprises, L.L.C. System and method for surface steerable drilling
US11085283B2 (en) 2011-12-22 2021-08-10 Motive Drilling Technologies, Inc. System and method for surface steerable drilling using tactical tracking
US8596385B2 (en) 2011-12-22 2013-12-03 Hunt Advanced Drilling Technologies, L.L.C. System and method for determining incremental progression between survey points while drilling
US9297205B2 (en) 2011-12-22 2016-03-29 Hunt Advanced Drilling Technologies, LLC System and method for controlling a drilling path based on drift estimates
EP2692982A3 (en) * 2012-08-01 2017-07-26 Halliburton Energy Services, Inc. Near-bit borehole opener tool and method of reaming
WO2014116934A1 (en) 2013-01-25 2014-07-31 Halliburton Energy Services, Inc. Hydraulic activation of mechanically operated bottom hole assembly tool
US9631434B2 (en) 2013-03-14 2017-04-25 Smith International, Inc. Underreamer for increasing a wellbore diameter
US9759014B2 (en) 2013-05-13 2017-09-12 Baker Hughes Incorporated Earth-boring tools including movable formation-engaging structures and related methods
US9399892B2 (en) 2013-05-13 2016-07-26 Baker Hughes Incorporated Earth-boring tools including movable cutting elements and related methods
US9670737B2 (en) 2013-07-06 2017-06-06 First Choice Drilling Mud motor with integrated reamer
CN105723044B (en) 2013-10-12 2018-10-16 M·梅 For rotating/intelligent the reamer of slidably drilling system and method
US11970930B2 (en) 2013-10-12 2024-04-30 Mark May Intelligent circulating sub for rotary/sliding drilling system and method
US9587437B2 (en) 2014-06-23 2017-03-07 National Oilwell Varco, L.P. Powered reaming device
US9428961B2 (en) 2014-06-25 2016-08-30 Motive Drilling Technologies, Inc. Surface steerable drilling system for use with rotary steerable system
US11106185B2 (en) 2014-06-25 2021-08-31 Motive Drilling Technologies, Inc. System and method for surface steerable drilling to provide formation mechanical analysis
US11933158B2 (en) 2016-09-02 2024-03-19 Motive Drilling Technologies, Inc. System and method for mag ranging drilling control
US10830033B2 (en) 2017-08-10 2020-11-10 Motive Drilling Technologies, Inc. Apparatus and methods for uninterrupted drilling
US10584574B2 (en) 2017-08-10 2020-03-10 Motive Drilling Technologies, Inc. Apparatus and methods for automated slide drilling
US11274499B2 (en) * 2017-08-31 2022-03-15 Halliburton Energy Services, Inc. Point-the-bit bottom hole assembly with reamer
CA3082294C (en) 2017-12-14 2023-08-15 Halliburton Energy Services, Inc. Azimuth estimation for directional drilling
WO2019144040A2 (en) 2018-01-19 2019-07-25 Motive Drilling Technologies, Inc. System and method for analysis and control of drilling mud and additives
CN110374494B (en) * 2018-04-13 2021-09-10 中国石油化工股份有限公司 Screw drilling tool
CN108533250B (en) * 2018-06-13 2023-06-20 西安奥瑞普瑞电子科技有限公司 Low-side measuring device and method for well deviation measurement
CN109630016A (en) * 2018-11-27 2019-04-16 太原理工大学 A kind of mining horizontal km directional drilling machine trace tracking method
US11466556B2 (en) 2019-05-17 2022-10-11 Helmerich & Payne, Inc. Stall detection and recovery for mud motors
US11885212B2 (en) 2021-07-16 2024-01-30 Helmerich & Payne Technologies, Llc Apparatus and methods for controlling drilling
CN115283379A (en) * 2022-10-08 2022-11-04 胜利油田金达石油技术有限公司 Spiral drill bit and pipeline cleaning machine using same

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH573787A5 (en) * 1972-12-11 1976-03-31 Mapal Fab Praezision
US4616719A (en) * 1983-09-26 1986-10-14 Dismukes Newton B Casing lateral wells
US4612987A (en) * 1985-08-20 1986-09-23 Cheek Alton E Directional drilling azimuth control system
US5060736A (en) * 1990-08-20 1991-10-29 Smith International, Inc. Steerable tool underreaming system
US6059051A (en) * 1996-11-04 2000-05-09 Baker Hughes Incorporated Integrated directional under-reamer and stabilizer
US6213226B1 (en) * 1997-12-04 2001-04-10 Halliburton Energy Services, Inc. Directional drilling assembly and method
US6269892B1 (en) 1998-12-21 2001-08-07 Dresser Industries, Inc. Steerable drilling system and method
BE1012545A3 (en) * 1999-03-09 2000-12-05 Security Dbs Widener borehole.
US6419033B1 (en) * 1999-12-10 2002-07-16 Baker Hughes Incorporated Apparatus and method for simultaneous drilling and casing wellbores
US6470977B1 (en) * 2001-09-18 2002-10-29 Halliburton Energy Services, Inc. Steerable underreaming bottom hole assembly and method

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