US3802503A - Well tubing mandrel with combination guard and guide - Google Patents

Well tubing mandrel with combination guard and guide Download PDF

Info

Publication number
US3802503A
US3802503A US00230567A US23056772A US3802503A US 3802503 A US3802503 A US 3802503A US 00230567 A US00230567 A US 00230567A US 23056772 A US23056772 A US 23056772A US 3802503 A US3802503 A US 3802503A
Authority
US
United States
Prior art keywords
mandrel
guard
guide
sides
bore
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
US00230567A
Inventor
Ginn F Mc
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.)
Individual
Original Assignee
Individual
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
Application filed by Individual filed Critical Individual
Priority to US00230567A priority Critical patent/US3802503A/en
Application granted granted Critical
Publication of US3802503A publication Critical patent/US3802503A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B23/00—Apparatus for displacing, setting, locking, releasing or removing tools, packers or the like in boreholes or wells
    • E21B23/03—Apparatus for displacing, setting, locking, releasing or removing tools, packers or the like in boreholes or wells for setting the tools into, or removing the tools from, laterally offset landing nipples or pockets

Definitions

  • a mandrel for use in a well tubing has a body with a bore extending therethrough for alignment with the well tubing, 21 valve pocket is offset from the mandrel bore for receiving a valve or other tool therein, and guard means of a particular configuration are formed at the upper end of said pocket to restrict access thereto.
  • the present invention relates to retrievable mandrels and particularly to retrievable mandrels for receiving valves therein, which mandrels are provided for use in well tubing at spaced intervals therealong.
  • the mandrels have a full opening bore extending therethrough for alignment with the well tubing to permit wireline tools to be run therethrough, or to permit tubing tools to be pumped therethrough.
  • the mandrel also includes a pocket offset from the mandrel bore to receive a retrievable valve or other flow control element.
  • a combination guard and guide of relatively simple configuration is provided at the upper end of the pocket and is constructed and arranged to permit devices of a desired or predetermined diameter to enter the side pocket.
  • Other equipment either pumped or run on a wireline in the tubing will be restricted from access to the pocket by such guard, and the guard is constructed and arranged so that safety valves, fishing tools, and other similar equipment will not enter or hang up on the valve pocket or on the guard, but will be guided back into the main bore of the mandrel for movement through the tubing.
  • the guard is constructed in a manner so that while accomplishing its function, it inhibits the collection of debris such as wax, paraffin, or other substances that may tend to settle from fluids in a tubing flow string from interfering with the normal operation of the guard.
  • the present invention is directed to a guard adapted to be employed with a side pocket mandrel to selectively restrict access to the side pocket.
  • the present invention also is directed to a guard construction which does not employ surfaces that might tend to collect debris such as wax, paraffin, or other substances entrained in liquid flow in a tubing, which collection of substances might otherwise interfere with the normal operation of the guard.
  • Still another object of the present invention is to provide a guard at the upper end of a side pocket in a side pocket mandrel which does not present any sharp surfaces or ledges in the flow path'in the tubing, but which includes guide surfaces to guide tubing tools which might otherwise tend to enter the valve pocket back into the main of the mandrel for movement through the tubing and thus selectively restrict access to the valve pocket.
  • Still another object of the present invention is to provide a plurality of side pockets in a well tubing stream having a combination guard and guide thereon of a predetermined diameter, with the guard in each valve pocket being substantially the same size.
  • FIG. 1 is a sectional view of a mandrel showing the main bore, offset valve pocket, and combination guard and guide at the upper end of the valve pocket;
  • FIG. 2 is a sectional view on the line 2-2 of FIG. 1;
  • FIG. 3 is a perspective view of the combination guard and guide.
  • FIG. 1 of the drawings wherein a mandrel represented generally at 20 is shown as including a body 21 having a bore 22 extending therethrough with threads 23 and 24 formed at each end of the body for connecting the mandrel into a tubing string.
  • the bore 22 is aligned with the bore of the tubing string for receiving various tubing equipment therethrough such as safety valves, fishing tools, and the like, as well as gas lift valves and control valves to be seated within the mandrel 20.
  • the mandrel 20 includes a side pocket referred to generally at 25 which forms a receptacle for receiving a flow control valve or gas lift valve therein.
  • the tubing bore equipment inserted in the tubing string may be in some instances pumped down, or lowered on a wireline, and it is desirable that such equipment not enter the side pocket 25. It can be appreciated that where deviated holes are encountered, or due to other circumstances, such tubing equipment may move to the lateral offset portion of the mandrel away from the main bore 22 therethrough and tend to enter the valve pocket 25.
  • a combination guard and guide 26 is arranged at the upper end of the valve pocket 25 as shown in FIG. I to restrict access thereto so that only tools of a predetermined diameter will pass into the guard 26 and then be guided into the valve pocket 25 for seating therein.
  • the guard 26 with each mandrel be of substantially the same diameter throughout the tubing string.
  • valve pocket 25 is illustrated as being welded into the mandrel 22, but the mandrel 20 may be formed in any suitablemanner well known in the art.
  • the guide pocket 26 is also illustrated as being welded adjacent the upper end of the valve pocket 25, and in FIG. 3, the configuration of the guard 26 is more clearly illustrated.
  • the body of the guard is of a generally semicircular shape, the portion 28 of which forms a wall of the mandrel 20 as illustrated in FIG. I.
  • the upper end of the guard is provided with a particular interior surface configuration including a pair of surfaces, one of which is referred to at 30, and the other at 30a.
  • the surfaces 30 and 30a are formed by sloping the sides of the semicircular body member from the upper end of the body member as illustrated at 31 and 32, such sloping configuration extending downwardly and inwardly towards the center of wall portion 28 as represented by the lines 33 and 34.
  • the sides of the semicircular body extend toward the opening body bore as shown in the drawings to define the front of the combination guard and guide.
  • the outer edges 35 and 36 of the semicircular member 28 extend at right angles to the longitudinal axis of the body for a portion of the wall thickness of member 28 and then slope inwardly from their respective inner edges the remainder of the wall thickness of member 28 as illustrated at 35a and 36a in FIG. 3 of the drawings.
  • the sloping surfaces 35a and 36a intersect the sloping surfaces 30 and 30a, respectively, at the upper or forward end of the body and then extend continuously throughout the body as shown.
  • the intersection of the surface 35a and 30 is represented by the line 30b and the intersection of surfaces 30a and 36a is represented by the line 30c. Since surfaces 35a and 30 both are sloping, the line 30b is at an angle relative to the longitudinal axis of the body, as is line 30c.
  • the sloping surfaces 30 and 30a are again illustrated in end view, as are surfaces 35a and 36a.
  • the intersection of surfaces 35a and 30 is again represented at 30b, and the intersection of surfaces 36a and 30a at 30c.
  • FIG. 2 shows that surfaces 30 and 30a extend inwardly toward and blend into wall 28 adjacent the center of wall portion 28 at the forward or upper end of guide 26.
  • the arrangement and configuration of the surfaces 30, 30a, 35a, and 36a is such that no sharp ledges or edges are provided in the guard which form a suitable collecting surface for paraffin, wax, or other debris flowing through the tubing and the bore 22 of the mandrel.
  • the arrangement of the surfaces 30 and 30a is such that a device of only a predetermined diameter will be permitted to enter the valve pocket 25 immediately beneath the guard 26.
  • the diameter of the guard 26 is such that when it is desired to insert a tool in the pocket 25, such may be accomplished without any problem since the guard 26 will permit such predetermined, sized device to be received within the pocket 25.
  • the surfaces 30 and 30a will deflect tools and equipment of undesired size from the valve pocket 25 and urge them onto surfaces 35a and 36a to enable such tools to move back towards bore 22 and into the tubing string.
  • a valve or other device of predetermined diameter for insertion in valve pocket 25 engages the combination guide and guard 26, it will guide such device into the pocket 25.
  • a mandrel for use in a well tubing including:
  • a body having an open bore extending therethrough for alignment with the well tubing
  • valve receptacle formed in said mandrel body and offset from the open bore of said body
  • combination guard and guide means formed at the upper end of said valve receptacle and offset from the open bore of said body, said combination guard and guide including:
  • a body of generally semicircular shape having a portion which forms part of the mandrel body that is offset from the open bore of said mandrel body and is adajcent and above said valve receptacle;
  • said semi-circular body including sides extending toward the open body bore to define the front of said combination guard and guide;
  • each of said sides having upper ends, and each of said sides at their upper ends having an interior surface that is formed by sloping each side downwardly from its upper end and towards the center of the one portion which forms part of the mandrel body;
  • said sloping interior side surfaces intersecting the sloping portions of said outer edges to define an opening in said guard and guide of a desired configuration to restrict access to said valve receptacle immediately therebelow.

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Geology (AREA)
  • Mining & Mineral Resources (AREA)
  • Physics & Mathematics (AREA)
  • Environmental & Geological Engineering (AREA)
  • Fluid Mechanics (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Containers And Packaging Bodies Having A Special Means To Remove Contents (AREA)

Abstract

A mandrel for use in a well tubing has a body with a bore extending therethrough for alignment with the well tubing, a valve pocket is offset from the mandrel bore for receiving a valve or other tool therein, and guard means of a particular configuration are formed at the upper end of said pocket to restrict access thereto.

Description

United States Patent 1191 M inn 1451 Apr. 9, 1974 1 WELL TUBING MANDREL WITH 2,679,904 6 1954 Howard et a1. 166/1175 x COMBINATION GUARD AND GUIDE 2,664,162 12/1953 Howard et al. 166/] 17.5 X
4/1958 Bryan 166/1175 x Primary Examiner-Werner H. Schroeder 5 7] ABSTRACT A mandrel for use in a well tubing has a body with a bore extending therethrough for alignment with the well tubing, 21 valve pocket is offset from the mandrel bore for receiving a valve or other tool therein, and guard means of a particular configuration are formed at the upper end of said pocket to restrict access thereto.
1 Claim, 3 Drawing Figures WELL TUBING MANDREL WITH COMBINATION GUARD AND GUIDE CROSS REFERENCE TO RELATED APPLICATION The present invention discloses and claims a combination guard and guide for use in conjunction with my invention WELL TUBING MANDREL WITH GUARD AND ORIENTING SLEEVE" in my copending application bearing Ser. No. 230,781 and filed Mar. 1, I972, now abandoned.
BACKGROUND OF THE INVENTION The present invention relates to retrievable mandrels and particularly to retrievable mandrels for receiving valves therein, which mandrels are provided for use in well tubing at spaced intervals therealong. The mandrels have a full opening bore extending therethrough for alignment with the well tubing to permit wireline tools to be run therethrough, or to permit tubing tools to be pumped therethrough.
The mandrel also includes a pocket offset from the mandrel bore to receive a retrievable valve or other flow control element.
A combination guard and guide of relatively simple configuration is provided at the upper end of the pocket and is constructed and arranged to permit devices of a desired or predetermined diameter to enter the side pocket. Other equipment either pumped or run on a wireline in the tubing will be restricted from access to the pocket by such guard, and the guard is constructed and arranged so that safety valves, fishing tools, and other similar equipment will not enter or hang up on the valve pocket or on the guard, but will be guided back into the main bore of the mandrel for movement through the tubing.
Also, the guard is constructed in a manner so that while accomplishing its function, it inhibits the collection of debris such as wax, paraffin, or other substances that may tend to settle from fluids in a tubing flow string from interfering with the normal operation of the guard.
The present invention is directed to a guard adapted to be employed with a side pocket mandrel to selectively restrict access to the side pocket.
The present invention also is directed to a guard construction which does not employ surfaces that might tend to collect debris such as wax, paraffin, or other substances entrained in liquid flow in a tubing, which collection of substances might otherwise interfere with the normal operation of the guard.
Still another object of the present invention is to provide a guard at the upper end of a side pocket in a side pocket mandrel which does not present any sharp surfaces or ledges in the flow path'in the tubing, but which includes guide surfaces to guide tubing tools which might otherwise tend to enter the valve pocket back into the main of the mandrel for movement through the tubing and thus selectively restrict access to the valve pocket.
Still another object of the present invention is to provide a plurality of side pockets in a well tubing stream having a combination guard and guide thereon of a predetermined diameter, with the guard in each valve pocket being substantially the same size.
Other objects and advantages of the present invention will become apparent from a consideration of the following description and drawings.
BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a sectional view of a mandrel showing the main bore, offset valve pocket, and combination guard and guide at the upper end of the valve pocket;
FIG. 2 is a sectional view on the line 2-2 of FIG. 1; and
FIG. 3 is a perspective view of the combination guard and guide.
DESCRIPTION OF THE PREFERRED EMBODIMENT Attention is first directed to FIG. 1 of the drawings wherein a mandrel represented generally at 20 is shown as including a body 21 having a bore 22 extending therethrough with threads 23 and 24 formed at each end of the body for connecting the mandrel into a tubing string. When the body 21 is connected in the tubing string (not shown), the bore 22 is aligned with the bore of the tubing string for receiving various tubing equipment therethrough such as safety valves, fishing tools, and the like, as well as gas lift valves and control valves to be seated within the mandrel 20.
The mandrel 20 includes a side pocket referred to generally at 25 which forms a receptacle for receiving a flow control valve or gas lift valve therein.
The tubing bore equipment inserted in the tubing string may be in some instances pumped down, or lowered on a wireline, and it is desirable that such equipment not enter the side pocket 25. It can be appreciated that where deviated holes are encountered, or due to other circumstances, such tubing equipment may move to the lateral offset portion of the mandrel away from the main bore 22 therethrough and tend to enter the valve pocket 25.
To overcome this, a combination guard and guide 26 is arranged at the upper end of the valve pocket 25 as shown in FIG. I to restrict access thereto so that only tools of a predetermined diameter will pass into the guard 26 and then be guided into the valve pocket 25 for seating therein. Where a plurality of mandrels are at spaced intervals in the tubing string, it is generally desirable that the guard 26 with each mandrel be of substantially the same diameter throughout the tubing string.
It will be noted that the valve pocket 25 is illustrated as being welded into the mandrel 22, but the mandrel 20 may be formed in any suitablemanner well known in the art. The guide pocket 26 is also illustrated as being welded adjacent the upper end of the valve pocket 25, and in FIG. 3, the configuration of the guard 26 is more clearly illustrated.
It can be seen that the body of the guard is of a generally semicircular shape, the portion 28 of which forms a wall of the mandrel 20 as illustrated in FIG. I. The upper end of the guard is provided with a particular interior surface configuration including a pair of surfaces, one of which is referred to at 30, and the other at 30a. The surfaces 30 and 30a are formed by sloping the sides of the semicircular body member from the upper end of the body member as illustrated at 31 and 32, such sloping configuration extending downwardly and inwardly towards the center of wall portion 28 as represented by the lines 33 and 34. The sides of the semicircular body extend toward the opening body bore as shown in the drawings to define the front of the combination guard and guide. It will be noted that the outer edges 35 and 36 of the semicircular member 28 extend at right angles to the longitudinal axis of the body for a portion of the wall thickness of member 28 and then slope inwardly from their respective inner edges the remainder of the wall thickness of member 28 as illustrated at 35a and 36a in FIG. 3 of the drawings. The sloping surfaces 35a and 36a intersect the sloping surfaces 30 and 30a, respectively, at the upper or forward end of the body and then extend continuously throughout the body as shown. The intersection of the surface 35a and 30 is represented by the line 30b and the intersection of surfaces 30a and 36a is represented by the line 30c. Since surfaces 35a and 30 both are sloping, the line 30b is at an angle relative to the longitudinal axis of the body, as is line 30c.
In FIG. 2, the sloping surfaces 30 and 30a are again illustrated in end view, as are surfaces 35a and 36a. The intersection of surfaces 35a and 30 is again represented at 30b, and the intersection of surfaces 36a and 30a at 30c.
FIG. 2 shows that surfaces 30 and 30a extend inwardly toward and blend into wall 28 adjacent the center of wall portion 28 at the forward or upper end of guide 26.
It can be appreciated that the arrangement and configuration of the surfaces 30, 30a, 35a, and 36a is such that no sharp ledges or edges are provided in the guard which form a suitable collecting surface for paraffin, wax, or other debris flowing through the tubing and the bore 22 of the mandrel. On the other hand, the arrangement of the surfaces 30 and 30a is such that a device of only a predetermined diameter will be permitted to enter the valve pocket 25 immediately beneath the guard 26.
Thus, when tubing equipment is either pumped or lowered into the tubing string on a wireline, it will be deflected from entering the valve pocket 25 should it move laterally of the bore 22 extending through the mandrel 20. However, the diameter of the guard 26 is such that when it is desired to insert a tool in the pocket 25, such may be accomplished without any problem since the guard 26 will permit such predetermined, sized device to be received within the pocket 25.
From the foregoing description, it can be appreciated that an arrangement is provided which restricts access to the pocket 25 on the one hand, but which does not provide any surfaces that might tend to collect debris so as to interfere with the proper functioning of such guard surface.
The surfaces 30 and 30a will deflect tools and equipment of undesired size from the valve pocket 25 and urge them onto surfaces 35a and 36a to enable such tools to move back towards bore 22 and into the tubing string. However, when a valve or other device of predetermined diameter for insertion in valve pocket 25 engages the combination guide and guard 26, it will guide such device into the pocket 25.
The foregoing disclosure and description of the invention are illustrative and explanatory thereof, and various changes in the size, shape, and materials as well as in the details of the illustrated construction may be made without departing from the spirit of the invention.
What is claimed is:
1. In a mandrel for use in a well tubing including:
a. a body having an open bore extending therethrough for alignment with the well tubing;
b. a valve receptacle formed in said mandrel body and offset from the open bore of said body;
0. combination guard and guide means formed at the upper end of said valve receptacle and offset from the open bore of said body, said combination guard and guide including:
1. a body of generally semicircular shape having a portion which forms part of the mandrel body that is offset from the open bore of said mandrel body and is adajcent and above said valve receptacle;
2. said semi-circular body including sides extending toward the open body bore to define the front of said combination guard and guide;
3- said sides having upper ends, and each of said sides at their upper ends having an interior surface that is formed by sloping each side downwardly from its upper end and towards the center of the one portion which forms part of the mandrel body;
4. said sides having outer edges with each edge including a portion that slopes inwardly toward the center of the one portion that forms part of the mandrel body; and
5. said sloping interior side surfaces intersecting the sloping portions of said outer edges to define an opening in said guard and guide of a desired configuration to restrict access to said valve receptacle immediately therebelow.

Claims (5)

1. In a mandrel for use in a well tubing including: a. a body having an open bore extending therethrough for alignment with the well tubing; b. a valve receptacle formed in said mandrel body and offset from the open bore of said body; c. combination guard and guide means formed at the upper end of said valve receptacle and offset from the open bore of said body, said combination guard and guide including: 1. a body of generally semicircular shape having a portion which forms part of the mandrel body that is offset from the open bore of said mandrel body and is adajcent and above said valve receptacle; 2. said semi-circular body including sides extending toward the open body bore to define the front of said combination guard and guide; 3. said sides having upper ends, and each of said sides at their upper ends having an interior surface that is formed by sloping each side downwardly from its upper end and towards the center of the one portion which forms part of the mandrel body; 4. said sides having outer edges with each edge including a portion that slopes inwardly toward the center of the one portion that forms part of the mandrel body; and 5. said sloping interior side surfaces intersecting the sloping portions of said outer edges to define an opening in said guard and guide of a desired configuration to restrict access to said valve receptacle immediately therebelow.
2. said semi-circular body including sides extending toward the open body bore to define the front of said combination guard and guide;
3. said sides having upper ends, and each of said sides at their upper ends having an interior surface that is formed by sloping each side downwardly from its upper end and towards the center of the one portion which forms part of the mandrel body;
4. said sides having outer edges with each edge including a portion that slopes inwardly toward the center of the one portion that forms part of the mandrel body; and
5. said sloping interior side surfaces intersecting the sloping portions of said outer edges to define an opening in said guard and guide of a desired configuration to restrict access to said valve receptacle immediately therebelow.
US00230567A 1972-03-01 1972-03-01 Well tubing mandrel with combination guard and guide Expired - Lifetime US3802503A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US00230567A US3802503A (en) 1972-03-01 1972-03-01 Well tubing mandrel with combination guard and guide

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US00230567A US3802503A (en) 1972-03-01 1972-03-01 Well tubing mandrel with combination guard and guide

Publications (1)

Publication Number Publication Date
US3802503A true US3802503A (en) 1974-04-09

Family

ID=22865699

Family Applications (1)

Application Number Title Priority Date Filing Date
US00230567A Expired - Lifetime US3802503A (en) 1972-03-01 1972-03-01 Well tubing mandrel with combination guard and guide

Country Status (1)

Country Link
US (1) US3802503A (en)

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3874445A (en) * 1973-12-12 1975-04-01 Camco Inc Multiple valve pocket mandrel and apparatus for installing and removing flow control devices therefrom
US4066128A (en) * 1975-07-14 1978-01-03 Otis Engineering Corporation Well flow control apparatus and method
US4106563A (en) * 1977-11-03 1978-08-15 Camco, Incorporated Sidepocket mandrel
US4201265A (en) * 1979-01-11 1980-05-06 Camco, Incorporated Sidepocket mandrel and method of making
DE3305740A1 (en) * 1982-02-19 1983-09-01 Otis Engineering Corp., 75234 Dallas, Tex. SIDE POCKET SPINDLE
WO1986003544A2 (en) * 1984-12-07 1986-06-19 Crawford Douglass W Apparatus for placing and removing well flow control devices
US4603736A (en) * 1982-09-11 1986-08-05 Norman Moore Method of producing side-pocket mandrels free of welds
US4673036A (en) * 1986-02-13 1987-06-16 Otis Engineering Corporation Side pocket mandrel
US4765403A (en) * 1984-12-07 1988-08-23 Crawford Douglas W Apparatus for placing and removing well flow control devices
US4770244A (en) * 1986-06-24 1988-09-13 Chevron Research Company Downhole fixed choke for steam injection
US5096503A (en) * 1991-02-19 1992-03-17 Wellman Sidney E Body waste bag washer
US5137085A (en) * 1990-06-15 1992-08-11 Ot's Engineering Corporation Side pocket mandrel

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2664162A (en) * 1948-06-24 1953-12-29 Sid W Richardson Inc Means for installing and removing flow valves
US2679904A (en) * 1949-11-23 1954-06-01 Sid W Richardson Inc Means of installing and removing flow valves or the like
US2828698A (en) * 1957-04-09 1958-04-01 Otis Eng Co Gas lift valve assembly

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2664162A (en) * 1948-06-24 1953-12-29 Sid W Richardson Inc Means for installing and removing flow valves
US2679904A (en) * 1949-11-23 1954-06-01 Sid W Richardson Inc Means of installing and removing flow valves or the like
US2828698A (en) * 1957-04-09 1958-04-01 Otis Eng Co Gas lift valve assembly

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3874445A (en) * 1973-12-12 1975-04-01 Camco Inc Multiple valve pocket mandrel and apparatus for installing and removing flow control devices therefrom
US4066128A (en) * 1975-07-14 1978-01-03 Otis Engineering Corporation Well flow control apparatus and method
US4106563A (en) * 1977-11-03 1978-08-15 Camco, Incorporated Sidepocket mandrel
US4201265A (en) * 1979-01-11 1980-05-06 Camco, Incorporated Sidepocket mandrel and method of making
DE3305740A1 (en) * 1982-02-19 1983-09-01 Otis Engineering Corp., 75234 Dallas, Tex. SIDE POCKET SPINDLE
US4603736A (en) * 1982-09-11 1986-08-05 Norman Moore Method of producing side-pocket mandrels free of welds
WO1986003544A3 (en) * 1984-12-07 1986-07-31 Douglass W Crawford Apparatus for placing and removing well flow control devices
WO1986003544A2 (en) * 1984-12-07 1986-06-19 Crawford Douglass W Apparatus for placing and removing well flow control devices
US4765403A (en) * 1984-12-07 1988-08-23 Crawford Douglas W Apparatus for placing and removing well flow control devices
EP0351884A1 (en) * 1984-12-07 1990-01-24 CRAWFORD, Douglass W. Flow control device and packing sub
US4673036A (en) * 1986-02-13 1987-06-16 Otis Engineering Corporation Side pocket mandrel
US4770244A (en) * 1986-06-24 1988-09-13 Chevron Research Company Downhole fixed choke for steam injection
US5137085A (en) * 1990-06-15 1992-08-11 Ot's Engineering Corporation Side pocket mandrel
US5096503A (en) * 1991-02-19 1992-03-17 Wellman Sidney E Body waste bag washer

Similar Documents

Publication Publication Date Title
US3802503A (en) Well tubing mandrel with combination guard and guide
DE69721531T2 (en) CUTTING TOOL FOR USE IN THE HOLE
DE69623302T2 (en) SECTION MILLING OF HOLES
DE69519723T2 (en) FILLING VALVE
US3741299A (en) Sidepocket mandrel
DE68913392T2 (en) Device for taking core samples.
DE69924674T2 (en) distribution apparatus
DE2123294A1 (en) Device for suspending measuring devices inside a drill string
US3844363A (en) Drill tool
DE19535139C2 (en) Plug-in part for underwater hydraulic coupling
US2257080A (en) Drill pipe cleaner
US3302722A (en) Wire line retrievable wash pipe bottom hole assembly
CA2399132A1 (en) Combined logging and drilling system
DE1918201A1 (en) Cementing device for deep boreholes
US4030543A (en) Well tubing mandrel with combination guard, guide and latch arrangement
DE60012540T2 (en) DEVICE FOR DRILLING AND FINISHING SEVERAL SIDE HOLES
US4034806A (en) Tubing side pocket mandrel
DE2642014C2 (en) Connection piece for installation between a tubular drill string for deep drilling and a drill bit
US3886638A (en) Multi-way valve porting block
US4541482A (en) Offset open bore sidepocket mandrel
DE2011475B2 (en) Method for flushing a borehole using a foam flushing agent
DE2228115A1 (en) SOCKET WITH A WIRE CORE AND SPRING SNAP FINGERS
BR102013027758A2 (en) spiral pipe gas injection chuck, and method for performing gas lift in a production well
AU681661B2 (en) Drill tube element
US1615037A (en) Guide for side trackers