USRE33150E - Borehole drill pipe continuous side entry or exit apparatus and method - Google Patents

Borehole drill pipe continuous side entry or exit apparatus and method Download PDF

Info

Publication number
USRE33150E
USRE33150E US07381027 US38102789A USRE33150E US RE33150 E USRE33150 E US RE33150E US 07381027 US07381027 US 07381027 US 38102789 A US38102789 A US 38102789A US RE33150 E USRE33150 E US RE33150E
Authority
US
Grant status
Grant
Patent type
Prior art keywords
passage
pipe
main body
side entry
body section
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.)
Expired - Lifetime
Application number
US07381027
Inventor
Harper Boyd
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.)
Boyd s Bit Service Inc
Original Assignee
Boyd s Bit Service 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
Grant date

Links

Images

Classifications

    • 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
    • E21B17/00Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods ; Cables; Casings; Tubings
    • E21B17/02Couplings; joints
    • E21B17/023Arrangements for connecting cables or wirelines to downhole devices
    • E21B17/025Side entry subs
    • 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
    • E21B33/00Sealing or packing boreholes or wells
    • E21B33/02Surface sealing or packing
    • E21B33/03Well heads; Setting-up thereof
    • E21B33/068Well heads; Setting-up thereof having provision for introducing objects or fluids into, or removing objects from, wells
    • E21B33/072Well heads; Setting-up thereof having provision for introducing objects or fluids into, or removing objects from, wells for cable-operated tools

Abstract

A side entry sub for use in a drill pipe string which permits continuous injection and/or removal of a wireline equipped with analitical instruments within the hollow of the pipe without interrupting the connection or resulting communication between the wireline and tool apparatus. The operation is performed with the top power device connected to the drill pipe string and may be used during pressure application of drilling mud. Such a device permits location of a stuck pipe without disassembly of the top power drive.

Description

This invention relates to a side entry apparatus for use in an oil well drilling string which permits a continuous insertion or removal of a wireline equipped with desirous apparatus for uninterrupted communicating from above the surface with the inside of the drill pipe string.

Heretofore various types of side entry apparatus have been used with a drill pipe string in which a wireline has been passed through a side entry and fixed within the side entry against movement within the side entry. Such side entry subs are usually assembled within the pipe string near the drill motor with additional pipe added above the side entry sub as the well bore is drilled. Such devices have been set forth in U.S. Pat. Nos. 4,062,551; 4,200,297; 4,388,969 and 4,506,729. U.S. Pat. No. 4,399,877 sets forth a side entry sub which is assembled in the drill pipe string above the ground surfaces for continuously surveying a borehole drilled substantially horizontally throughout its length. The pipe is provided with cable and cable holders so that as each section of pipe is added the side entry sub may be used to connect an exterior cable with the interior cable.

It is common practice in borehole drilling to use a VARCO type top drive drilling motor which is mounted on guide rails in a drilling rig device. This allows a suspension block assembly to be raised and lowered thus moving the drill string in the borehole which permits adding pipe as needed. When this type of drilling assembly is utilized and the drill pipe becomes stuck in the borehole and cannot be moved, then the top drive drilling motor must be diassembled and removed from above the stuck drill pipe. Such a procedure requires about eight (8) hours disassembly time. After removal of the top drive drilling motor, a surface concentrically oriented pack-off assembly is secured to the top of the drill pipe and utilized for entry into the drill string with an electrical wireline to determine at which depth the sticking problem has occurred. The longer the time of determining the problem, analyzing the requirements and taking corrective action, the less chance there will be of freeing the stuck drill string. A secondary consideration is the economics involved with the operation of this type drilling rig. The offshore drilling rigs often cost approximately $50,000 per day or about $2,000 per hour. The time to remove a top mounted drive assembly would cost approximately $16,000. An approximate equal amount of time to reassemble the unit would result in a total expense of some $32,000 not counting the time required to solve the problem. It is hereby shown that time is important and it is therefore desireable to remove the problem and to start drilling as fast as possible.

It is therefore an object of this invention to provide a side entry sub which may be placed into the drill pipe string without disassembly of the top mounted drive assembly.

Another object is to provide a side entry sub which permits a continuous injection and removal of a wireline equipped with various tool apparatus into the drill pipe string from above the surface during movement of the pipe.

Still another object is to provide a side entry sub which may be placed in betwen two sections of drill pipe above the surface which permits insertion of analitical instruments into the drill pipe string for manipulation of the instrument under pressure as well manipulation of the drill pipe in a procedure to free the stuck drill pipe.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is a side view of a side entry sub made in accordance to this invention;

FIG. 2 is a cross sectional view of FIG. 1; and

FIG. 3 illustrates the side entry sub assembled in a drill pipe string for its intended use. The drill pipe has been cut to shorten the assembly.

DETAILED DESCRIPTION

As shown in the drawings, the side entry sub 10 includes a cylindrical main section having an inside diameter passage 12 which is drilled off-center of the main section and which is the same as the inside diameter of a 41/2 inch outside diameter pipe 14 used in a drill pipe string with the passage through the main section in axial alignment with the pipe sections on either end of the side entry sub. A side entry section 16 is drilled with a two (2) inch inside diameter passage 18 with the axis of the passage at a 61/2 degree angle relative to the passage 12 through the main section. The side entry sub may be made from one cylindrical piece of steel or any other suitable material having an outside diameter of approximately 101/2 inches. The upper and lower ends 20 and 22 of the side entry sub are milled to have the same outside diameter as the drill pipe and are threaded on their inside to receive threaded end pipe sections. The central section 23 which includes the side entry section 16 is tapered along the passage 18 from the top to within five inches from the bottom to have a six (6) inch outside diameter at 25, five (5) inches up from the bottom. The bottom then tapers at 27 over 11/8 inches to the normal outside diameter of the end 22. A 195/8 inch, short section 24 having male and female threaded ends is added at the top and a 17 6/8 inch, short section 26 having male threaded ends is added to the bottom end. The bottom short section 24 may be changed end-for-end for longer wear because the greatest amount of wear is at the upper end where the wireline drags the most.

A prior art hydraulic pressure pack-off assembly 30 made by Belt Rubber Company, Kennedale, Tex., which in normal use is secured to the top of the drill pipe string for determining the stuck position of the drill pipe line, is modified to be used with the side entry sub. The upper end of the hydraulic pressure pack-off assembly is modified at the upper end to include a wireline guide 32 to prevent wear on the upper end of the assembly 30 and an appropriate fitting 34 is connected between the pack-off assembly and the side entry.

In normal well drilling, a VARCO top power drive 34 is guided on guide rails (not shown) during drilling and as the hole is drilled the power drive is lowered along the rails. After ninety feet has been drilled the VARCO top power drive is raised and a new section of ninety foot pipe is added to the drill pipe string. If the pipe becomes stuck, then means must be provided for determining the location of the stuck pipe. Since there is insufficient room between the drill pipe elevators and the VARCO drive unit to pass a wireline through a hydraulic pressure pack-off added to the upper end of the pipe, usually the VARCO drive unit must be disassembled. As set forth earlier this takes considerable time which may result in a permanently stuck pipe. To avoid disassembly of the power drive unit the side entry sub 10 of this invention is used.

In use, the first thirty foot section of the drill pipe string is unthreaded from the second thirty foot section and the side entry sub is assembled between the first section of thirty foot pipe and the second section of thirty foot pipe, as shown in FIG. 3. Once the side entry sub has been assembled between the end of the first drill pipe section and the second drill pipe section, the elecrical wireline unit including electric conductor line 36 is installed in the derrick in the usual manner for end-pipe operation. After the wireline unit is installed in the derrick, a wireline rope socket and analitical instruments such as a DIA-LOG free point indicator manufactured by the Dia-Log Company is property attached to the electrical wireline and inserted through the hydraulic pressure pack-off unit 30 into the drill pipe through the side entry sub 10. Since the VARCO drive unit 34 is secured to the upper end of the first section of pipe and the wireline and analitical instruments are inserted into the pipe through the side entry sub, the wireline tools and VARCO drive unit can be manipulated under pressure using the drilling mud in a procedure to free the stuck drill pipe.

By use of the side entry sub, the VARCO power drive can be used to manipulate the pipe string during the time used to free the pipe. Once the pipe has become free, the wireline and instruments are removed from the side entry sub. The side entry sub is then removed and the drill pipe string is reconnected in the usual manner for drilling. The only down time is the time required to insert the side entry sub wireline, free the pipe and then remove the wireline, etc., and side entry sub. In practice, it takes about 1/2 hour to insert the side entry sub, and about the same time to remove the side entry sub. Once the side entry sub has been removed, the drill pipe can be pulled from the borehole without having had to disassemble the VARCO drive motor assembly.

The side entry sub permits a wireline operation to be performed with the drill pipe under pressure and also reduces the down time since the power drive motor assembly does not have to be disassembled and reassembled.

Additionally FIG. 3 illustrates the usual assembly including the known elements, as shown. It will be obvious to one skilled in the art that in order to protect the threads on the ends of the short end pipe section of the side entry sub when not in use that caps may be threaded onto the ends. Such caps may be provided with a U-shaped catch such as a semicircular rod-loop secured to the cap wich may be used in conjunction with a hook for lifting the device into place.

The foregoing relates to a preferred exemplary embodiments of the invention, it being understood that other variants and embodiments thereof are possible within the spirit and scope of the invention, the latter being defined by the appended claims.

Claims (2)

What is claimed and desired to be secured by Letters Patent of the United States is:
1. A side entry sub for use in combination with a hydraulic pressure pack-off assembly for freeing a stuck drill pipe of a drill pipe string without disassembly of a top drive drilling motor assembly which comprises:
a main body section;
a main passage through said main body section off-center with respect to the center line of said main body section and of the same diameter as the inside diameter of said drill pipe; said main passage having upper and lower ends, said upper and lower ends provided with internal female pipe threads,
a side entry passage in said main body section which intercepts said main passage and extends in the same direction as said main passage at an angle of about 61/2 degrees relative to said main passage and of a smaller diameter than said main passage, said side entry passage having an outer end with internal female pipe threads,
a short pipe section having a length of from about 17 inches to about 20 inches secured to each pipe threaded end of said main passage in said main body section in which said short pipe section includes pipe threads on the outer surface of each end to assume a greater amount of wear during use than said main body section and which is replaceable when worn, and
an adapter having male pipe threads on its outer end surfaces secured to said side entry passage and to which said hydraulic pressure pack-off assembly is secured. .Iadd.
2. A side entry sub for use in combination with a hydraulic pressure pack-off assembly for freeing a stuck drill pipe of a drill pipe string without disassembly of a top drive drilling motor assembly which comprises:
(a) a main body section;
(b) a main passage through said main body section off-center with respect to the center line of said main body section and of the same diameter as the inside diameter of said drill pipe; said main passage having upper and lower threaded ends, at least said lower end provided with internal female pipe threads;
(c) a side entry passage in said main body section which intercepts said main passage and extends in the same direction as said main passage at an angle of about 61/2 degrees relative to said main passage and of a smaller diameter than said main passage, said side passage having an outer end with internal femal pipe threads;
(d) a short pipe section secured to the lower threaded end of said main passage in said main body section in which said short pipe section includes pipe threads on the outer surface of its upper end to assume a greater amount of wear on the threaded end of the short pipe section as the wireline is moved between the side entry passage and the main passage, the short pipe section replaceable when worn. .Iaddend. .Iadd.3. A side entry sub for use in combination with a hydraulic pressure pack-off assembly for freeing a stuck drill pipe of a drill pipe string without disassembly of a top drive drilling motor assembly which comprises:
(a) a main body section;
(b) a main passage through said main body section off-center with respect to the center line of said main body section and of the same diameter as the inside diameter of said drill pipe; said main passage having upper and lower ends, said upper and lower ends provided with internal female pipe threads;
(c) a side entry passage in said main body section which intercepts said main passage and extends in the same direction as said main passage at an angle of about 61/2 degrees relative to said main passage and of a smaller diameter than said main passage, said side passage having an outer end with internal female pipe threads; and
(d) a short pipe section secured to at least the lower threaded end of said main passage in said main body section in which said short pipe section includes the pipe threads on the outer surface on each end to assume a greater amount of wear during use in the main body section when the wireline is pulled between the side entry passage and the main passage and which is replaceable and reversible when worn. .Iaddend. .Iadd.4. The apparatus in claim 3, further including an adapter having a male pipe threads on its outer end surfaces secured to the side entry passage into which said hydraulic pressure pack-off assembly is secured. .Iaddend. .Iadd.5. The apparatus in claim 3, wherein the main body section may further include a portion extending above the entry of the side entry passageway in the main body section so as to allow a portion to be grasped with tongs when the side entry sub is secured to a drill string. .Iaddend. .Iadd.6. The apparatus in claim 3, wherein the short pipe section has a length from about 17 inches to about 20 inches. .Iaddend. .Iadd.7. The apparatus in claim 3, wherein the short pipe section would include pipe threads on the outer surface of each end so as to allow the short pipe section to be reversed when one of the ends is worn by the movement of the wireline therethrough. .Iaddend.
US07381027 1986-02-19 1989-07-17 Borehole drill pipe continuous side entry or exit apparatus and method Expired - Lifetime USRE33150E (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
US06830824 US4681162A (en) 1986-02-19 1986-02-19 Borehole drill pipe continuous side entry or exit apparatus and method
US07381027 USRE33150E (en) 1986-02-19 1989-07-17 Borehole drill pipe continuous side entry or exit apparatus and method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US07381027 USRE33150E (en) 1986-02-19 1989-07-17 Borehole drill pipe continuous side entry or exit apparatus and method

Related Parent Applications (1)

Application Number Title Priority Date Filing Date
US06830824 Reissue US4681162A (en) 1986-02-19 1986-02-19 Borehole drill pipe continuous side entry or exit apparatus and method

Publications (1)

Publication Number Publication Date
USRE33150E true USRE33150E (en) 1990-01-23

Family

ID=27009204

Family Applications (1)

Application Number Title Priority Date Filing Date
US07381027 Expired - Lifetime USRE33150E (en) 1986-02-19 1989-07-17 Borehole drill pipe continuous side entry or exit apparatus and method

Country Status (1)

Country Link
US (1) USRE33150E (en)

Cited By (24)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5735351A (en) * 1995-03-27 1998-04-07 Helms; Charles M. Top entry apparatus and method for a drilling assembly
US6244345B1 (en) 1996-12-31 2001-06-12 Specialty Rental Tool & Supply Co., Inc. Lockable swivel apparatus and method
US6269879B1 (en) * 2000-03-20 2001-08-07 Harper Boyd Sleeve liner for wireline entry sub assembly
US6553825B1 (en) * 2000-02-18 2003-04-29 Anthony R. Boyd Torque swivel and method of using same
US20040144567A1 (en) * 2003-01-28 2004-07-29 Boyd's Bit Service, Inc. Locking swivel apparatus with replaceable internal gear members
US20040177973A1 (en) * 2001-02-16 2004-09-16 Helms Charles M. High tensile loading top entry sub and method
US6915865B2 (en) 2003-01-28 2005-07-12 Boyd's Bit Service, Inc. Locking swivel apparatus with a supplemental internal locking mechanism
US20050211443A1 (en) * 2004-03-23 2005-09-29 Helms Charles M Articulated drillstring entry apparatus and method
US20050256589A1 (en) * 2004-04-23 2005-11-17 Slemker Tracy C Lanyard suspension system for a prosthetic limb
US20050279512A1 (en) * 2004-06-22 2005-12-22 Boyd Anthony R Side entry apparatus and method
US20070068679A1 (en) * 2005-07-29 2007-03-29 Robichaux Kip M Ball dropping tool method and apparatus
US20070137867A1 (en) * 2005-12-16 2007-06-21 Boyd Anthony R Side entry apparatus and method
US20070137864A1 (en) * 2005-12-16 2007-06-21 Boyd Anthony R Side entry apparatus and method
US20070158078A1 (en) * 2006-01-09 2007-07-12 Boyd's Bit Service, Inc. Dual entry apparatus for a subterranean borehole
US20070199718A1 (en) * 2004-06-22 2007-08-30 Boyd Anthony R Entry swivel apparatus and method
US7281582B2 (en) 2002-09-09 2007-10-16 Mako Rentals, Inc. Double swivel apparatus and method
US20070272403A1 (en) * 2006-05-24 2007-11-29 Robichaux Kip M Seal configuration for top drive swivel apparatus and method
US20080271884A1 (en) * 2006-05-02 2008-11-06 Mako Rentals, Inc. Dropping sub method and apparatus
US20100084145A1 (en) * 2008-10-07 2010-04-08 Greg Giem Multiple Activation-Device Launcher For A Cementing Head
US20100236786A1 (en) * 2007-03-26 2010-09-23 Andrea Sbordone System and method for performing intervention operations with a subsea y-tool
US20110174503A1 (en) * 2008-07-31 2011-07-21 Services Petroliers Schlumberger Method and apparatus for installing a wireline for logging or other operations in an under-balanced well
US8196650B1 (en) 2008-12-15 2012-06-12 Mako Rentals, Inc. Combination swivel and ball dropper
US8726994B2 (en) 2002-09-09 2014-05-20 Mako Rentals, Inc. Double swivel apparatus and method
US9163470B2 (en) 2008-10-07 2015-10-20 Schlumberger Technology Corporation Multiple activation-device launcher for a cementing head

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4062551A (en) * 1975-12-05 1977-12-13 Jim Base Cable seal unit for earth-boring drill strings
US4200297A (en) * 1976-09-13 1980-04-29 Sperry-Sun, Inc. Side entry clamp and packoff
US4388969A (en) * 1980-12-01 1983-06-21 Nl Industries, Inc. Borehole pipe side entry method and apparatus
US4399877A (en) * 1981-04-17 1983-08-23 Nl Sperry Sun, Inc. Continuous borehole telemetry system and method
US4506729A (en) * 1983-02-22 1985-03-26 Exxon Production Research Co. Drill string sub with self closing cable port valve
US4524834A (en) * 1982-06-22 1985-06-25 Smith International, Inc. Cablehead side entry sub

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4062551A (en) * 1975-12-05 1977-12-13 Jim Base Cable seal unit for earth-boring drill strings
US4200297A (en) * 1976-09-13 1980-04-29 Sperry-Sun, Inc. Side entry clamp and packoff
US4388969A (en) * 1980-12-01 1983-06-21 Nl Industries, Inc. Borehole pipe side entry method and apparatus
US4399877A (en) * 1981-04-17 1983-08-23 Nl Sperry Sun, Inc. Continuous borehole telemetry system and method
US4524834A (en) * 1982-06-22 1985-06-25 Smith International, Inc. Cablehead side entry sub
US4506729A (en) * 1983-02-22 1985-03-26 Exxon Production Research Co. Drill string sub with self closing cable port valve

Cited By (64)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5735351A (en) * 1995-03-27 1998-04-07 Helms; Charles M. Top entry apparatus and method for a drilling assembly
USRE41759E1 (en) * 1996-12-31 2010-09-28 Helms Charles M Lockable swivel apparatus and method
US6244345B1 (en) 1996-12-31 2001-06-12 Specialty Rental Tool & Supply Co., Inc. Lockable swivel apparatus and method
US6553825B1 (en) * 2000-02-18 2003-04-29 Anthony R. Boyd Torque swivel and method of using same
US6796191B1 (en) * 2000-02-18 2004-09-28 Anthony R. Boyd Torque swivel and method of using same
US6732805B1 (en) 2000-03-20 2004-05-11 Boyd's Bit Service, Inc. Sleeve liner for wireline entry sub assembly and method of use
US6269879B1 (en) * 2000-03-20 2001-08-07 Harper Boyd Sleeve liner for wireline entry sub assembly
US7100699B2 (en) 2001-02-16 2006-09-05 Specialty Rental Tools & Supply, Lp High tensile loading top entry sub and method
US20040177973A1 (en) * 2001-02-16 2004-09-16 Helms Charles M. High tensile loading top entry sub and method
US9567810B2 (en) 2002-09-09 2017-02-14 Mako Rentals, Inc. Double swivel apparatus and method
US8726994B2 (en) 2002-09-09 2014-05-20 Mako Rentals, Inc. Double swivel apparatus and method
US8201627B2 (en) 2002-09-09 2012-06-19 Mako Rentals, Inc. Double swivel apparatus and method
US8408302B2 (en) 2002-09-09 2013-04-02 Mako Rentals, Inc. Double swivel apparatus and method
US8047290B1 (en) 2002-09-09 2011-11-01 Mako Rentals, Inc. Double swivel apparatus and method
US7281582B2 (en) 2002-09-09 2007-10-16 Mako Rentals, Inc. Double swivel apparatus and method
US7510007B2 (en) 2002-09-09 2009-03-31 Mako Rentals, Inc. Double swivel apparatus and method
US6994628B2 (en) 2003-01-28 2006-02-07 Boyd's Bit Service, Inc. Locking swivel apparatus with replaceable internal gear members
US20040144567A1 (en) * 2003-01-28 2004-07-29 Boyd's Bit Service, Inc. Locking swivel apparatus with replaceable internal gear members
US6915865B2 (en) 2003-01-28 2005-07-12 Boyd's Bit Service, Inc. Locking swivel apparatus with a supplemental internal locking mechanism
US20050211443A1 (en) * 2004-03-23 2005-09-29 Helms Charles M Articulated drillstring entry apparatus and method
US7131497B2 (en) 2004-03-23 2006-11-07 Specialty Rental Tools & Supply, Lp Articulated drillstring entry apparatus and method
US20050256589A1 (en) * 2004-04-23 2005-11-17 Slemker Tracy C Lanyard suspension system for a prosthetic limb
US7168498B2 (en) 2004-06-22 2007-01-30 Boyd Anthony R Side entry apparatus and method
US20070199718A1 (en) * 2004-06-22 2007-08-30 Boyd Anthony R Entry swivel apparatus and method
US20050279512A1 (en) * 2004-06-22 2005-12-22 Boyd Anthony R Side entry apparatus and method
US20070095544A1 (en) * 2004-06-22 2007-05-03 Boyd Anthony R Side entry apparatus and method
US7793731B2 (en) 2004-06-22 2010-09-14 Boyd Anthony R Entry swivel apparatus and method
US7316276B2 (en) 2004-06-22 2008-01-08 Boyd Anthony R Side entry apparatus and method
US7537052B2 (en) 2005-07-29 2009-05-26 Mako Rentals, Inc. Ball dropping tool method and apparatus
US20070068679A1 (en) * 2005-07-29 2007-03-29 Robichaux Kip M Ball dropping tool method and apparatus
US20080087414A1 (en) * 2005-07-29 2008-04-17 Mako Rentals, Inc. Ball dropping tool method and apparatus
US7281589B2 (en) * 2005-07-29 2007-10-16 Mako Rentals, Inc. Ball dropping tool method and apparatus
US20070137867A1 (en) * 2005-12-16 2007-06-21 Boyd Anthony R Side entry apparatus and method
US20070137864A1 (en) * 2005-12-16 2007-06-21 Boyd Anthony R Side entry apparatus and method
US7377316B2 (en) 2005-12-16 2008-05-27 Boyd Anthony R Side entry apparatus and method
US7392850B2 (en) 2005-12-16 2008-07-01 Boyd Anthony R Side entry apparatus and method
US7533732B2 (en) 2006-01-09 2009-05-19 Smith International, Inc. Dual entry apparatus for a subterranean borehole
US20070158078A1 (en) * 2006-01-09 2007-07-12 Boyd's Bit Service, Inc. Dual entry apparatus for a subterranean borehole
US20080271884A1 (en) * 2006-05-02 2008-11-06 Mako Rentals, Inc. Dropping sub method and apparatus
US7699100B2 (en) 2006-05-02 2010-04-20 Mako Rentals, Inc. Dropping sub method and apparatus
US7798209B1 (en) 2006-05-24 2010-09-21 Mako Rentals, Inc. Seal configuration for top drive swivel apparatus and method
US20070272403A1 (en) * 2006-05-24 2007-11-29 Robichaux Kip M Seal configuration for top drive swivel apparatus and method
US20100218936A1 (en) * 2006-05-24 2010-09-02 Mako Rentals, Inc. Seal configuration for top drive swivel apparatus and method
US20100288484A1 (en) * 2006-05-24 2010-11-18 Mako Rentals, Inc. Seal configuration for top drive swivel apparatus and method
US7913760B2 (en) 2006-05-24 2011-03-29 Mako Rentals, Inc. Seal configuration for top drive swivel apparatus and method
US8776875B2 (en) 2006-05-24 2014-07-15 Mako Rentals, Inc. Seal configuration for top drive swivel apparatus and method
US7681646B2 (en) 2006-05-24 2010-03-23 Mako Rentals, Inc. Seal configuration for top drive swivel apparatus and method
US8528631B2 (en) 2006-05-24 2013-09-10 Mako Rentals, Inc. Seal configuration for top drive swivel apparatus and method
US8146663B2 (en) 2006-05-24 2012-04-03 Mako Rentals, Inc. Seal configuration for top drive swivel apparatus and method
US20080041578A1 (en) * 2006-05-24 2008-02-21 Robichaux Kip M Seal configuration for top drive swivel apparatus and method
US7533720B2 (en) 2006-05-24 2009-05-19 Mako Rentals, Inc. Seal configuration for top drive swivel apparatus and method
US8297348B2 (en) 2006-05-24 2012-10-30 Mako Rentals, Inc. Seal configuration for top drive swivel apparatus and method
US20100236786A1 (en) * 2007-03-26 2010-09-23 Andrea Sbordone System and method for performing intervention operations with a subsea y-tool
US20110174503A1 (en) * 2008-07-31 2011-07-21 Services Petroliers Schlumberger Method and apparatus for installing a wireline for logging or other operations in an under-balanced well
US8899338B2 (en) * 2008-07-31 2014-12-02 Schlumberger Technology Corporation Method and apparatus for installing a wireline for logging or other operations in an under-balanced well
US8770293B2 (en) 2008-10-07 2014-07-08 Schlumberger Technology Corporation Multiple activation-device launcher for a cementing head
US20100084145A1 (en) * 2008-10-07 2010-04-08 Greg Giem Multiple Activation-Device Launcher For A Cementing Head
US8069922B2 (en) * 2008-10-07 2011-12-06 Schlumberger Technology Corporation Multiple activation-device launcher for a cementing head
US9163470B2 (en) 2008-10-07 2015-10-20 Schlumberger Technology Corporation Multiple activation-device launcher for a cementing head
US8555972B2 (en) 2008-10-07 2013-10-15 Schlumberger Technology Corporation Multiple activation-device launcher for a cementing head
US8356661B1 (en) 2008-12-15 2013-01-22 Mako Rentals, Inc. Combination swivel and ball dropper
US8196650B1 (en) 2008-12-15 2012-06-12 Mako Rentals, Inc. Combination swivel and ball dropper
US8893773B2 (en) 2008-12-15 2014-11-25 Mako Rentals, Inc. Combination swivel and ball dropper
US8590611B2 (en) 2008-12-15 2013-11-26 Mako Rentals, Inc. Combination swivel and ball dropper

Similar Documents

Publication Publication Date Title
US6626238B2 (en) Remote sensor for determining proper placement of elevator slips
US5141051A (en) Electrical wet connect and check valve for a drill string
US5018580A (en) Section milling tool
US6923273B2 (en) Well system
US4660910A (en) Apparatus for electrically interconnecting multi-sectional well tools
US5095981A (en) Casing centralizer
US4422508A (en) Methods for pulling sucker rod strings
US5415238A (en) Borehole sidetrack locator
US5638904A (en) Safeguarded method and apparatus for fluid communiction using coiled tubing, with application to drill stem testing
US4523878A (en) Remotely replaceable guidepost method and apparatus
US4126848A (en) Drill string telemeter system
US4682657A (en) Method and apparatus for the running and pulling of wire-line tools and the like in an oil or gas well
US6173787B1 (en) Method and system intended for measurements in a horizontal pipe
US6209632B1 (en) Subsurface signal transmitting apparatus
US4291762A (en) Apparatus for rapidly attaching an inside blowout preventer sub to a drill pipe
US4368786A (en) Downhole drilling apparatus
US7708078B2 (en) Apparatus and method for delivering a conductor downhole
US7201222B2 (en) Method and apparatus for aligning rotor in stator of a rod driven well pump
US5435395A (en) Method for running downhole tools and devices with coiled tubing
US4681158A (en) Casing alignment tool
US5163522A (en) Angled sidewall coring assembly and method of operation
US4697638A (en) Downhole logging and servicing system with manipulatable logging and servicing tools
US5803191A (en) Well entry tool
US5272925A (en) Motorized rotary swivel equipped with a dynamometric measuring unit
US5255751A (en) Oilfield make-up and breakout tool for top drive drilling systems

Legal Events

Date Code Title Description
REMI Maintenance fee reminder mailed
SULP Surcharge for late payment
FPAY Fee payment

Year of fee payment: 4

FPAY Fee payment

Year of fee payment: 8

REMI Maintenance fee reminder mailed
FPAY Fee payment

Year of fee payment: 12

AS Assignment

Owner name: WELLS FARGO BANK, NATIONAL ASSOCIATION, TEXAS

Free format text: SECURITY AGREEMENT;ASSIGNOR:BOYD S BITS SERVICE, INC.;REEL/FRAME:015980/0981

Effective date: 20040630

AS Assignment

Owner name: BOYD S BIT SERVICE, INC., LOUISIANA

Free format text: RELEASE BY SECURED PARTY;ASSIGNOR:WELLS FARGO BANK, NATIONAL ASSOCIATION (AS ADMINISTRATIVE AGENT);REEL/FRAME:022460/0314

Effective date: 20080822